raubioxon plus and raubioflex aerator systems · raubioxon plus and raubioflex aerator systems...
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RAUBIOXON PLUS ANd RAUBIOfLeX AeRAtOR SyStemSteCHNICAL INfORmAtION
www.rehau.com
Subject to technical modifications
Valid from October 2011
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RAUBIOXON PLUS ANd RAUBIOfLeX AeRAtOR SyStemStABLe Of CONteNtS
Areas of application - RAUBIOXON Plus .....................................................................................................................................................
RAUBIOXON PLUS PIPe ANd dISC AeRAtORSmaterials of RAUBIOXON Plus pipe and disc aerator components ..............................................................................................................Pipe aerator components ............................................................................................................................................................................Support pipe ..............................................................................................................................................................................................Silicone membrane ....................................................................................................................................................................................Fastener ....................................................................................................................................................................................................Disc aerator components ............................................................................................................................................................................Base plate .................................................................................................................................................................................................Disc membrane .........................................................................................................................................................................................Retainer ring ..............................................................................................................................................................................................Disc saddle ................................................................................................................................................................................................Fastener ....................................................................................................................................................................................................Grommet ...................................................................................................................................................................................................
Product Range - RAUBIOXON Plus dUO pipe aerator / standard pipe aerator / pipe aerator with 1 1/4” internal thread ..............................RAUBIOXON Plus DUO pipe aerator for round air distribution pipe .................................................................................................................RAUBIOXON Plus STD pipe aerator for square air distribution pipe ................................................................................................................RAUBIOXON Plus STD Pipe aerator with 1 1/4” thread ....................................................................................................................................
Product Range - RAUBIOXON Plus disc aerator ..........................................................................................................................................RAUBIOXON Plus disc aerator .....................................................................................................................................................................
Areas of Application - RAUBIOfLeX ...........................................................................................................................................................
RAUBIOfLeX PIPe ANd dISC AeRAtORSmaterials of RAUBIOfLeX pipe and disc aerator components .....................................................................................................................Pipe aerator components ............................................................................................................................................................................Support pipe ..............................................................................................................................................................................................EPDM membrane .......................................................................................................................................................................................Fastener ....................................................................................................................................................................................................Disc aerator components ............................................................................................................................................................................Base plate .................................................................................................................................................................................................Disc membrane .........................................................................................................................................................................................Retainer ring ..............................................................................................................................................................................................Disc saddle ................................................................................................................................................................................................Fastener ....................................................................................................................................................................................................Grommet ...................................................................................................................................................................................................
Product Range - RAUBIOfLeX dUO pipe aerator / standard pipe aerator / pipe aerator with 1 1/4” internal thread ......................................RAUBIOFLEX DUO pipe aerator for round air distribution pipe ........................................................................................................................RAUBIOFLEX STD pipe aerator for square air distribution pipe .......................................................................................................................RAUBIOFLEX STD pipe aertor with 1 1/4” thread ............................................................................................................................................
Product Range - RAUBIOfLeX disc aerator ................................................................................................................................................RAUBIOFLEX disc aerator ...........................................................................................................................................................................
1............................
2............................2.1.........................2.1.1......................2.1.2......................2.1.3......................2.2.........................2.2.1......................2.2.2......................2.2.3......................2.2.4......................2.2.5......................2.2.6......................
3............................3.1.........................3.2.........................3.3.........................
4............................4.1.........................
5............................
6............................6.1.........................6.1.1......................6.1.2......................6.1.3......................6.2.........................6.2.1......................6.2.2......................6.2.3......................6.2.4......................6.2.5......................6.2.6......................
7............................7.1.........................7.2.........................7.3.........................
8. ...........................8.1.........................
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Advantages of RAUBIOXON Plus pipe and disc aerators ............................................................................................................................
A global leader in polymer processing technologiesFounded in 1948, REHAU today enjoys an impeccable reputation for developing innovative solutions in providing a wide range of products and services for the Construction (including environmental protection), Automotive and Industry sectors.
With more than 15,000 employees around the globe in over 170 locations on six continents, REHAU offers incomparable expertise in materials development, systems design and surface technology, and an unwavering commitment to building long-lasting partnerships and alliances with our customers.
Continuing research and development enables us to consistently deliver cost-effective and environment-friendly products. Stringent quality control and safety guidelines ensure that all our products comply with the highest international standards. REHAU’s products and systems for the aeration, furniture, electric and electronic appliance, window and door, heating and plumbing, fire protection and pipe markets complement each other in integrated high-performance solutions, representing the perfect blend of quality and innovation to inspire better living.
ReHAURedefINING QUALIty IN POLymeRS WORLdWIde
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Aerator consumables and accessories ......................................................................................................................................................Pipe aerator consumables ..........................................................................................................................................................................Membranes for pipe aerator .......................................................................................................................................................................One-ear clamp for pipe aerator ...................................................................................................................................................................Fastener for DUO .......................................................................................................................................................................................
Flat seal / O-ring for pipe aerator ................................................................................................................................................................Pipe aerator accessories ............................................................................................................................................................................Adaptor for square air distribution pipes ......................................................................................................................................................Adaptor for round air distribution pipes ........................................................................................................................................................Stainless steel rod ......................................................................................................................................................................................End cap .....................................................................................................................................................................................................Tools for pipe aerator .................................................................................................................................................................................Installation adaptor for standard pipe aerator ...............................................................................................................................................Hand pliers for one-ear clamp installation and removal .................................................................................................................................Disc aerator consumbles ............................................................................................................................................................................Membrane for disc aerator .........................................................................................................................................................................Retainer ring ..............................................................................................................................................................................................Fastener for disc saddle .............................................................................................................................................................................O-ring for disc saddle .................................................................................................................................................................................Disc aerator accessories.............................................................................................................................................................................Disc saddle for round pipe ..........................................................................................................................................................................Grommet for round pipe .............................................................................................................................................................................Tools for disc aerator ..................................................................................................................................................................................Assembly tool for disc aerator .....................................................................................................................................................................Retainer ring removal tool ...........................................................................................................................................................................Air distribution pipe and pipe clamps ...........................................................................................................................................................Air distribution pipe ( lateral pipe) ................................................................................................................................................................Square air distribution pipe .........................................................................................................................................................................Round air distribution pipe ..........................................................................................................................................................................Stainless steel pipe clamp ..........................................................................................................................................................................
design of Aerator System ..........................................................................................................................................................................Design of aerator system ............................................................................................................................................................................General .....................................................................................................................................................................................................Arrangement of pipe aerator .......................................................................................................................................................................Impact of mixers and recirculation pumps on pipe aerator arrangement ........................................................................................................Pressure loss and SOTE .............................................................................................................................................................................RAUBIOXON Plus pipe aerator ....................................................................................................................................................................RAUBIOFLEX pipe aerator ...........................................................................................................................................................................Arrangement of disc aerator .......................................................................................................................................................................Impact of mixers and recirculation pumps on disc aerator arrangement .........................................................................................................Pressure loss and SOTE .............................................................................................................................................................................RAUBIOXON Plus disc aerator .....................................................................................................................................................................RAUBIOFLEX disc aerator ...........................................................................................................................................................................Measurement of oxygen cpacity ..................................................................................................................................................................
Project Questionnaire ................................................................................................................................................................................
9. ...........................9.1.........................9.1.1......................9.1.2......................9.1.3......................9.1.4......................9.2.........................9.2.1......................9.2.2......................9.2.3......................9.2.4......................9.3.........................9.3.1......................9.3.2......................9.4.........................9.4.1......................9.4.2......................9.4.3......................9.4.4......................9.5.........................9.5.1......................9.5.2......................9.6.........................9.6.1......................9.6.2......................9.7.........................9.7.1......................9.7.1.1...................9.7.1.2...................9.7.2......................
10. .........................10.1.......................10.1.1....................10.1.2....................10.1.2.1.................10.1.3....................10.1.3.1.................10.1.3.2.................10.1.4....................10.1.4.1.................10.1.5....................10.1.5.1.................10.1.5.2.................10.2.......................
11. .........................
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High energy saving- No membrane shrinkage
- Low susceptibility to biofouling
- High oxygen utilisation
- Optimum bubble size
- Small increase in pressure loss
- Sludge deposit can be removed
AdVANtAGeS Of RAUBIOXON PLUS PIPe ANd dISC AeRAtORS
Long service life- High tear strength
- High temperature resistance
- High elasticity
- No leaching of plasticizer
- Resistant to oil
- Resistant to ozone and ageing
- Self sealing when air supply is stopped
- No membrane hardening
Up to 200% longer service life
Saves up to 25%*
* Based on test data from West Hornsby STP
RAUB
IOXO
N PL
US
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AReAS Of APPLICAtION RAUBIOXON PLUS
The RAUBIOXON Plus pipe and disc aerator system was specially
developed for fine bubble aeration of municipal and industrial wastewater
in biological treatment processes.
RAUSIK silicone membranes have shown to produce excellent results in
the following industrial applications:
- Food industry such as production of milk, chocolate, starch and meat
- Beverage industry
- Leather processing
- Paper production
- Textile cleaning
- Mineral oil processing
For application in wastewater containing organic solvents, strong acids
or strong alkalis, please check with REHAU competence centre on its
suitability.
Refurbishment with RAUBIOXON Plus pipe aerators at Wittenberg STP (Germany), 1998
Refurbishment with RAUBIOXON Plus pipe aerators at Nestle Ltd (Spain), 1998
Magdeburg STP (Germany), 420,000 PE, 2001
1. mAteRIALS Of RAUBIOXON PLUS PIPe ANd dISC AeRAtOR COmPONeNtS
2.1 Pipe aerator components2.1.1 Support pipeD = 63 mmD = 90 mmMaterial: PolypropyleneColour: White
2.1.3 FastenerMaterial: Polyoxymethylene (POM)Colour: Blue
2.1.2 Silicone membraned = 64 mm; s = 1.6 mmd = 91.5 mm; s = 1.65 mmMaterial: RAU-SIK silicone Plasticiser-free, high tear strength Colour: Blue transparent
Note: Other sizes available on request
2.
Density 1.19 ± 0.02 [g/cm3] DIN 53479
Shore hardness 60 ± 5 [Shore A] DIN 53505
Tensile strength ≥ 9 [N/mm2] DIN 53504 SII
Elongation at break ≥ 600 [%] DIN 53504 SII
Tear strength 45 ± 5 [N/mm] ASTM D624 B
Density 1.41 ± 0.02 [g/cm3] ISO 1183-1
Tensile strength at yield > 60 [MPa] ISO 527
Elongation at yield > 10 [%] ISO 527
Modulus of elasticity > 2150 [N/mm2] ISO 527
Density 0.91 ± 0.02 [g/cm3] ISO 1183
Tensile strength at yield ≥ 23 [MPa] ISO 527
Elongation at yield ≥ 300 [%] ISO 527
Modulus of elasticity > 1000 [N/mm2] ISO 175
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2.2 Disc aerator components2.2.1 Base PlateD = DN200 D = DN225D = DN300Connection: 3/4” NPTMaterial: PolypropyleneColour: White
2.2.2 Disc membrane
d = 203 mm, s = 2.0 mm
d = 236 mm, s = 2.0 mm
d = 315 mm, s = 2.0 mm
Material: RAU-SIK silicone
Plasticiser-free, high tensile strength
Colour: Blue transparent
2.2.3 Retainer ring
D = DN200
D = DN225
D = DN300
Material: Polypropylene
Colour: Blue
Density 0.9 [g/cm3] DIN EN ISO 1183
Tensile strength 24.5 [N/mm2] DIN EN ISO 527
Elongation at break 180 [%] DIN EN ISO 527
Tensile modulus 1000 [MPa] MA 17074
Density 0.9 [g/cm3] DIN 53479
Hardness 60 [Shore A] DIN 53505
Tensile strength 9.5 [N/mm2] DIN 53504 SII
Elongation at break 800 [%] DIN 53504 SII
Tear strength ≥ 40 [MPa] ASTM D624 B
Density 0.9 [g/cm3] DIN EN ISO 1183-A
Tensile strength 24 [N/mm2] DIN EN ISO 527
Elongation at break 520 [%] DIN EN ISO 527
Tensile modulus 880 [MPa] GB 9341
2.2.4 Disc saddle
Material: Polypropylene
Colour: Natural or White
2.2.5 Fastener
Material: Polyoxymethylene (POM)
Colour: Blue
Density 0.91 [g/cm3] DIN 53479
Tensile strength 30 [N/mm2] DIN 53455
Elongation at break ≥ 300 [%] DIN 53455
Tear modulus 1200 [N/mm2] DIN 53457
2.2.6 Grommet
Material: EPDM
Colour: Black
Density 0.96 [g/cm3] ASTM D782
Hardness 80 [Shore A] DIN 53505
Max. application temperature 85 [°C] -
Density 1.41 ± 0.02 [g/cm3] ISO 1183-1
Tensile strength at yield > 60 [MPa] ISO 527
Elongation at yield > 10 [%] ISO 527
Modulus of elasticity > 2150 [N/mm2] ISO 527
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3.
3.1 RAUBIOXON Plus DUO pipe aerator for round air distribution pipe
Membrane A = 64/91.5 mmConnection hole D = 32 mmO-ring EPDM (Standard) / Silicone (Only for H feature)
PROdUCt RANGeRAUBIOXON PLUS dUO PIPe AeRAtOR/ StANdARd PIPe AeRAtOR/ PIPe AeRAtOR WItH 11/4" INteRNAL tHReAd
B
C
E
AD
Note: NG-non-groove (for continuous operation), H-high temperature resistant, R-corrosion resistant up to 5g/L Chloride, R1-corrosion resistant up to 1g/L Chloride, S-pipe aerator on one side, V - non-return or check valve Note: NG-non-groove (for continuous operation), H-high temperature resistant, R-corrosion resistant up to 5g/L Chloride, R1-corrosion resistant up to 1g/L Chloride, S-pipe aerator on one side, V - non-return or check valve
Article no.
Membrane dia. A (mm)
Special feature(s) (See note)
Air distribution pipe dia. B (mm)
Overall length E
(mm)
Effective length C
(mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight
(kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton
(kg)
414165 64 - 88.9 +0.4/-0.2 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
414175 64 - 88.9 +0.4/-0.2 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
414185 64 - 88.9 +0.4/-0.2 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
414195 64 V 88.9 +0.4/-0.2 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
414205 64 V 88.9 +0.4/-0.2 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
414215 64 V 88.9 +0.4/-0.2 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
415085 64 S 88.9 +0.4/-0.2 670 1x500 0.075 1 to 6 0.97 30 575x765x705/0.311 31.6
415095 64 S 88.9 +0.4/-0.2 920 1x750 0.113 1.5 to 9 1.32 30 575x765x955/0.421 43.0
415105 64 S 88.9 +0.4/-0.2 1170 1x1000 0.150 2 to 12 1.59 30 575x765x1205/0.531 51.7
413442 64 - 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
413452 64 - 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
413462 64 - 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
413472 64 V 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
413482 64 V 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
413492 64 V 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
410234 64 R 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
410244 64 R 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
400252 64 R 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
417782 64 S 90 +0.3/-0 670 1x500 0.075 1 to 6 0.97 30 575x765x705/0.311 31.6
417792 64 S 90 +0.3/-0 920 1x750 0.113 1.5 to 9 1.32 30 575x765x955/0.421 43.0
417802 64 S 90 +0.3/-0 1170 1x1000 0.150 2 to 12 1.59 30 575x765x1205/0.531 51.7
413502 64 - 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
413512 64 - 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
413522 64 - 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
413532 64 V 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
413542 64 V 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
413552 64 V 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
410254 64 R 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
410264 64 R 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
400262 64 R 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
417812 64 S 110 +0.4/-0 680 1x500 0.075 1 to 6 0.99 28 575x765x705/0.311 30.3
Article no.
Membrane dia. A (mm)
Special feature(s) (See note)
Air distribution pipe dia. B (mm)
Overall length E
(mm)
Effective length C
(mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight
(kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton
(kg)
417822 64 S 110 +0.4/-0 930 1x750 0.113 1.5 to 9 1.34 28 575x765x955/0.421 41.0
417832 64 S 110 +0.4/-0 1180 1x1000 0.150 2 to 12 1.62 28 575x765x1205/0.531 49.4
414225 64 - 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
414235 64 - 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
414245 64 - 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
414255 64 V 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
414265 64 V 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
414275 64 V 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
415345 64 H 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
415355 64 H 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
410225 64 H 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
415365 64 HV 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
415375 64 HV 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
410235 64 HV 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
410245 64 HR 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
410255 64 HR 114.3 +0.2/-0.7 1720 2x750 0.230 3 to 18 2.50 14 575x765x880/0.388 38.4
410265 64 HR 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
415115 64 S 114.3 +0.2/-0.7 680 1x500 0.075 1 to 6 0.99 28 575x765x705/0.311 30.3
415125 64 S 114.3 +0.2/-0.7 930 1x750 0.113 1.5 to 9 1.34 28 575x765x955/0.421 41.0
415135 64 S 114.3 +0.2/-0.7 1180 1x1000 0.150 2 to 12 1.62 28 575x765x1205/0.531 49.4
413598 91.5 - 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.55 14 575x765x630/0.278 38.2
413608 91.5 - 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.48 14 575x765x880/0.388 52.2
413618 91.5 - 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.52 14 575x765x1130/0.498 67.3
413628 91.5 V 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.55 14 575x765x630/0.278 38.2
413638 91.5 V 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.48 14 575x765x880/0.388 52.2
413648 91.5 V 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.52 14 575x765x1130/0.498 67.3
400534 91.5 R 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.55 14 575x765x630/0.278 38.2
400544 91.5 R 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.48 14 575x765x880/0.388 52.2
400554 91.5 R 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.52 14 575x765x1130/0.498 67.3
410274 91.5 R1 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.55 14 575x765x630/0.278 38.2
400524 91.5 R1 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.48 14 575x765x880/0.388 52.2
410268 91.5 R1 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.52 14 575x765x1130/0.498 67.3
414918 91.5 S 110 +0.4/-0 680 1x500 0.119 1.5 to 9.5 1.37 28 575x765x630/0.278 40.8
414928 91.5 S 110 +0.4/-0 930 1x750 0.179 2.25 to 14.25 1.83 28 575x765x880/0.388 54.7
414938 91.5 S 110 +0.4/-0 1180 1x1000 0.238 3 to 19 2.35 28 575x765x1130/0.498 69.8
851409 64NG - 88.9 +0.4/-0.2 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
851419 64NG - 88.9 +0.4/-0.2 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
851429 64NG - 88.9 +0.4/-0.2 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
851439 64NG V 88.9 +0.4/-0.2 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
851449 64NG V 88.9 +0.4/-0.2 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
851459 64NG V 88.9 +0.4/-0.2 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
850429 64NG S 88.9 +0.4/-0.2 670 1x500 0.075 1 to 6 0.97 30 575x765x705/0.311 31.6
12 13
Article no.
Membrane dia. A (mm)
Special feature(s) (See note)
Air distribution pipe dia. B (mm)
Overall length E
(mm)
Effective length C
(mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight
(kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton
(kg)
850439 64NG S 88.9 +0.4/-0.2 920 1x750 0.113 1.5 to 9 1.32 30 575x765x955/0.421 43.0
850449 64NG S 88.9 +0.4/-0.2 1170 1x1000 0.150 2 to 12 1.59 30 575x765x1205/0.531 51.7
851469 64NG - 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
851479 64NG - 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
851489 64NG - 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
851499 64NG V 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
851509 64NG V 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
851519 64NG V 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
850459 64NG R 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
850469 64NG R 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
851739 64NG R 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
851709 64NG S 90 +0.3/-0 670 1x500 0.075 1 to 6 0.97 30 575x765x705/0.311 31.6
851719 64NG S 90 +0.3/-0 920 1x750 0.113 1.5 to 9 1.32 30 575x765x955/0.421 43.0
851729 64NG S 90 +0.3/-0 1170 1x1000 0.150 2 to 12 1.59 30 575x765x1205/0.531 51.7
851529 64NG - 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
851539 64NG - 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
851549 64NG - 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
851559 64NG V 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
851569 64NG V 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
851579 64NG V 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
850489 64NG R 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
800049 64NG R 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
851779 64NG R 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
851749 64NG S 110 +0.4/-0 680 1x500 0.075 1 to 6 0.99 28 575x765x705/0.311 30.3
851759 64NG S 110 +0.4/-0 930 1x750 0.113 1.5 to 9 1.34 28 575x765x955/0.421 41.0
851769 64NG S 110 +0.4/-0 1180 1x1000 0.150 2 to 12 1.62 28 575x765x1205/0.531 49.4
851589 64NG - 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
851599 64NG - 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
851609 64NG - 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
851619 64NG V 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
851629 64NG V 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
851639 64NG V 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
850499 64NG H 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
850509 64NG H 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
850519 64NG H 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
850589 64NG HV 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
850599 64NG HV 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
850609 64NG HV 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
850619 64NG HR 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
850629 64NG HR 114.3 +0.2/-0.7 1720 2x750 0.230 3 to 18 2.50 14 575x765x880/0.388 38.4
850639 64NG HR 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
851789 64NG S 114.3 +0.2/-0.7 680 1x500 0.075 1 to 6 0.99 28 575x765x705/0.311 30.3
Article no.
Membrane dia. A (mm)
Special feature(s) (See note)
Air distribution pipe dia. B (mm)
Overall length E
(mm)
Effective length C
(mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight
(kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton
(kg)
851799 64NG S 114.3 +0.2/-0.7 930 1x750 0.113 1.5 to 9 1.34 28 575x765x955/0.421 41.0
851809 64NG S 114.3 +0.2/-0.7 1180 1x1000 0.150 2 to 12 1.62 28 575x765x1205/0.531 49.4
851649 91.5NG - 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.55 14 575x765x630/0.278 38.2
851659 91.5NG - 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.48 14 575x765x880/0.388 52.2
851669 91.5NG - 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.52 14 575x765x1130/0.498 67.3
851679 91.5NG V 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.55 14 575x765x630/0.278 38.2
851689 91.5NG V 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.48 14 575x765x880/0.388 52.2
851699 91.5NG V 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.52 14 575x765x1130/0.498 67.3
850559 91.5NG R 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.55 14 575x765x630/0.278 38.2
850569 91.5NG R 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.48 14 575x765x880/0.388 52.2
850579 91.5NG R 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.52 14 575x765x1130/0.498 67.3
850529 91.5NG R1 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.55 14 575x765x630/0.278 38.2
850539 91.5NG R1 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.48 14 575x765x880/0.388 52.2
850549 91.5NG R1 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.52 14 575x765x1130/0.498 67.3
851819 91.5NG S 110 +0.4/-0 680 1x500 0.119 1.5 to 9.5 1.37 28 575x765x630/0.278 40.8
851829 91.5NG S 110 +0.4/-0 930 1x750 0.179 2.25 to 14.25 1.83 28 575x765x880/0.388 54.7
851839 91.5NG S 110 +0.4/-0 1180 1x1000 0.238 3 to 19 2.35 28 575x765x1130/0.498 69.8
Note: NG-non-groove (for continuous operation), H-high temperature resistant, R-corrosion resistant up to 5g/L Chloride, R1-corrosion resistant up to 1g/L Chloride, S-pipe aerator on one side, V - non-return or check valve
Note: NG-non-groove (for continuous operation), H-high temperature resistant, R-corrosion resistant up to 5g/L Chloride, R1-corrosion resistant up to 1g/L Chloride, S-pipe aerator on one side, V - non-return or check valve
14 15
PROdUCt RANGeRAUBIOXON PLUS dISC AeRAtOR
4.1 RAUBIOXON Plus disc aerator
4.
dp
Membrane A = 64 mm
Connection hole D = 45 mm
Flat seal Silicone
3.2 RAUBIOXON Plus STD pipe aerator for square air distribution pipe
3.3 RAUBIOXON Plus STD pipe aerator with 1 1/4” thread
Membrane A = 64 mm
Connection 1 1/4” internal thread ( ISO 7-1)
Eair supply holes
flat joint air distributor
membrane 64 x 1.5in RAU-SIK
support pipe in RAU-PP
C
A
B
D
threaded rod in steelair supply holes threaded rod in stainless steel
air distribution pipeflat sealsupport pipe in RAU-PP
membrane 64 x 1.6 in RAU-SIK
B
A
C
D
E
Article no.
Membrane dia. A (mm)
Special feature(s) (See note)
Overall length B (mm)
Effective length C (mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight (kg)
Make-up per carton (pc)
Carton size /volume (mm/m³)
Gross weight per carton (kg)
296374 64 - 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
296384 64 - 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
296394 64 - 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
296569 64 V 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
296579 64 V 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
296589 64 V 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
851269 64NG - 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
851279 64NG - 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
851289 64NG - 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
851298 64NG V 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
851329 64NG V 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
851339 64NG V 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
Article
no.
Membrane
dia. A (mm)
Special feature(s)
(See note)
Overall length B
(mm)
Effective
length C (mm)
Perforated
area (m²)
Airflow range
(Nm³/hr)
Unit weight
(kg)
Make-up
per carton (pc)
Carton size
/volume (mm/m³)
Gross weight
per carton (kg)
296404 64 T 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
296414 64 T 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
411039 64 T 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
851349 64NG T 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
851359 64NG T 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
851369 64NG T 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
Article no.
Type Special feature(s) (See note)
Outer diameter D
(mm)
Inner diameter p
(mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight (kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton
(kg)
411335 200 - 220 192 0.025 0.5 to 5 0.38 36 705x705x265/0.132 15.6
*415215 225 - 254 225 0.037 1 to 7 0.46 48 705x705x265/1.32 24
411345 300 - 340 300 0.063 1.5 to 11 0.90 16 705x705x265/0.132 16.4
411355 200 V 220 192 0.025 0.5 to 5 0.38 36 705x705x265/0.132 15.6
*415235 225 V 254 225 0.037 1 to 7 0.46 48 705x705x265/1.32 24
411365 300 V 340 300 0.063 1.5 to 11 0.90 16 705x705x265/0.132 16.4
Note: NG-non-groove (for continuous operation), V - non-return or check valve Note: V - non-return valve or check valve
Note: NG-non-grove (for continuous operation), T - 1 1/4” internal thread ( ISO 7-1 )
* To be available soon
17
5.AReAS Of APPLICAtONRAUBIOfLeX
The RAUBIOFLEX pipe and disc aerator system is developed for fine bub-
ble aeration of municipal wastewater in biological treatment processes.
Both types of aerators are suitable for continuous and intermittent opera-
tion.
RAUB
IOFL
EX
18 19
mAteRIALS Of RAUBIOfLeXPIPe ANd dISC AeRAtOR COmPONeNtS
6.1 Pipe aerator components 6.1.1 Support pipe D = 63 mmD = 90 mmMaterial: Polypropylene Colour: White
6.1.3 FastenerMaterial: Polyoxymethylene (POM)Colour: Blue
6.1.2 EPDM membraneD = 64.5 mm; s = 1.7 mmD = 92 mm; s = 1.8 mmMaterial: EPDMColour: Black
Note: Other sizes available on request
6.
Density 0.91 ± 0.02 [g/cm3] ISO 1183
Tensile strength ≥ 23 [N/mm2] ISO 527
Elongation at break ≥ 300 [%] ISO 527
Modulus of elasticity > 1000 [N/mm2] ISO 175
Density 1.11 ± 0.02 [g/cm3] DIN 53479
Shore hardness 50 ± 5 [Shore A] DIN 53505
Tensile strength ≥ 11 [N/mm2] DIN 53504 SII
Elongation at break ≥ 700 [%] DIN 53504 SII
Tear strength 18 ± 2 [N/mm] DIN 53507 A
Density 1.41 ± 0.02 [g/cm3] ISO 1183-1
Tensile strength at yield > 60 [N/mm2] ISO 527
Elongation at yield > 10 [%] ISO 527
Modulus of elasticity > 2150 [N/mm2] ISO 527
6.2 Disc aerator components
6.2.1 Base Plate
D = DN200
D = DN225
D = DN300
Connection: 3/4” NPT
Material: Polypropylene
Colour: White
6.2.2 Disc membrane
d = 203 mm, s = 2.0 mm
d = 236 mm, s = 2.0 mm
d = 315 mm, s = 2.0 mm
Material: EPDM
Colour: Black
6.2.3 Retainer ring
D = DN200
D = DN225
D = DN300
Material: Polypropylene
Colour: Blue
Density 0.9 [g/cm3] DIN EN ISO 1183
Tensile strength 24.5 [N/mm2] DIN EN ISO 527
Elongation at break 180 [%] DIN EN ISO 527
Tensile modulus 1000 [MPa] MA 17074
Density 1.07 [g/cm3] ISO 2781
Hardness 60 ± 5 [Shore A] DIN 53505
Tensile strength ≥ 11 [N/mm2] ISO 37
Elongation at break ≥ 500 [%] ISO 37
Tear strength 12 ± 2 [N/mm2] ISO 34
Density 0.9 [g/cm3] DIN EN ISO 1183-A
Tensile strength 24 [N/mm2] DIN EN ISO 527
Elongation at break 520 [%] DIN EN ISO 527
Tensile modulus 880 [MPa] GB 9341
20 21
6.2.6 Grommet
Material: EPDM
Colour: Black
6.2.4 Disc saddle
Material: Polypropylene
Colour: Natural or White
Density 0.91 [g/cm3] DIN 53479
Tensile strength 30 [N/mm2] DIN 53455
Elongation at break ≥ 300 [%] DIN 53455
Tear modulus 1200 [N/mm2] DIN 53457
Density 0.96 [g/cm3] ASTM D782
Hardness 80 [Shore A] DIN 53505
Max. application temperature 85 [°C] -
6.2.5 FastenerMaterial: Polyoxymethylene (POM)Colour: Blue
Density 1.41 ± 0.02 [g/cm3] ISO 1183-1
Tensile strength at yield > 60 [MPa] ISO 527
Elongation at yield > 10 [%] ISO 527
Modulus of elasticity > 2150 [N/mm2] ISO 527
7.
7.1 RAUBIOFLEX DUO pipe aerator for round air distribution pipe
Membrane A = 64.5/92 mmConnection hole D = 32 mmO-ring EPDM
PROdUCt RANGeRAUBIOfLeX dUO PIPe AeRAtOR/ StANdARd PIPe AeRAtOR/ PIPe AeRAtOR WItH 11/4" INteRNAL tHReAd
B
C
E
AD
Note: R-corrosion resistant up to 5g/L Chloride, R1-corrosion resistant up to 1g/L Chloride, S-pipe aerator on one side, V - non-return or check valve
Article no.
Membrane dia. A (mm)
Special feature(s) (See note)
Air distribution pipe dia. B (mm)
Overall length E
(mm)
Effective length C
(mm)
Perforated area (m²)
Airflow range(Nm³/hr)
Unit weight
(kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton (kg)
414285 64 - 88.9 +0.4/-0.2 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
414295 64 - 88.9 +0.4/-0.2 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
414305 64 - 88.9 +0.4/-0.2 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
414315 64 V 88.9 +0.4/-0.2 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
414325 64 V 88.9 +0.4/-0.2 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
414335 64 V 88.9 +0.4/-0.2 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
415145 64 S 88.9 +0.4/-0.2 670 1x500 0.075 1 to 6 0.97 30 575x765x705/0.311 31.5
415155 64 S 88.9 +0.4/-0.2 920 1x750 0.113 1.5 to 9 1.32 30 575x765x955/0.421 42.9
415165 64 S 88.9 +0.4/-0.2 1170 1x1000 0.150 2 to 12 1.59 30 575x765x1205/0.531 51.7
413562 64 - 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
413572 64 - 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
413582 64 - 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
413592 64 V 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
413602 64 V 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
413612 64 V 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
410342 64 R 90 +0.3/-0 1200 2x500 0.150 2 to 12 1.75 15 575x765x630/0.278 28.8
410352 64 R 90 +0.3/-0 1700 2x750 0.225 3 to 18 2.45 15 575x765x880/0.388 40.2
410362 64 R 90 +0.3/-0 2200 2x1000 0.300 4 to 24 3.00 15 575x765x1130/0.498 49.0
417842 64 S 90 +0.3/-0 670 1x500 0.075 1 to 6 0.97 30 575x765x705/0.311 31.5
417852 64 S 90 +0.3/-0 920 1x750 0.113 1.5 to 9 1.32 30 575x765x955/0.421 42.9
417862 64 S 90 +0.3/-0 1170 1x1000 0.150 2 to 12 1.59 30 575x765x1205/0.531 51.7
413622 64 - 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
413632 64 - 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
413642 64 - 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
413652 64 V 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
22 23
Note: R-corrosion resistant up to 5g/L Chloride, R1-corrosion resistant up to 1g/L Chloride, S-pipe aerator on one side, V - non-return or check valve
Article no.
Membrane dia. A (mm)
Special feature(s) (See note)
Air distribution pipe dia. B (mm)
Overall length E
(mm)
Effective length C
(mm)
Perforated area (m²)
Airflow range(Nm³/hr)
Unit weight
(kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton (kg)
413662 64 V 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
413672 64 V 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
410372 64 R 110 +0.4/-0 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
410382 64 R 110 +0.4/-0 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
410392 64 R 110 +0.4/-0 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
417872 64 S 110 +0.4/-0 680 1x500 0.075 1 to 6 0.99 28 575x765x705/0.311 30.3
417882 64 S 110 +0.4/-0 930 1x750 0.113 1.5 to 9 1.34 28 575x765x955/0.421 41.0
417892 64 S 110 +0.4/-0 1180 1x1000 0.150 2 to 12 1.62 28 575x765x1205/0.531 49.3
414345 64 - 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
414355 64 - 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
414365 64 - 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
414375 64 V 114.3 +0.2/-0.7 1220 2x500 0.150 2 to 12 1.80 14 575x765x630/0.278 27.7
414385 64 V 114.3 +0.2/-0.7 1720 2x750 0.225 3 to 18 2.50 14 575x765x880/0.388 38.4
414395 64 V 114.3 +0.2/-0.7 2220 2x1000 0.300 4 to 24 3.05 14 575x765x1130/0.498 46.7
415175 64 S 114.3 +0.2/-0.7 680 1x500 0.075 1 to 6 0.99 28 575x765x705/0.311 30.3
415185 64 S 114.3 +0.2/-0.7 930 1x750 0.113 1.5 to 9 1.34 28 575x765x955/0.421 41.0
415195 64 S 114.3 +0.2/-0.7 1180 1x1000 0.150 2 to 12 1.62 28 575x765x1205/0.531 49.3
413587 92 - 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.67 14 575x765x630/0.278 39.9
413597 92 - 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.62 14 575x765x880/0.388 54.1
413607 92 - 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.72 14 575x765x1130/0.498 70.1
413617 92 V 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.67 14 575x765x630/0.278 39.9
413627 92 V 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.62 14 575x765x880/0.388 54.1
413637 92 V 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.72 14 575x765x1130/0.498 70.1
410432 92 R 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.67 14 575x765x630/0.278 39.9
410442 92 R 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.62 14 575x765x880/0.388 54.1
410452 92 R 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.72 14 575x765x1130/0.498 70.1
410402 92 R1 110 +0.4/-0 1220 2x500 0.238 3 to 19 2.67 14 575x765x630/0.278 39.9
410412 92 R1 110 +0.4/-0 1720 2x750 0.357 4.5 to 28.5 3.62 14 575x765x880/0.388 54.1
410422 92 R1 110 +0.4/-0 2220 2x1000 0.476 6 to 38 4.72 14 575x765x1130/0.498 70.1
414407 92 S 110 +0.4/-0 680 1x500 0.119 1.5 to 9.5 1.43 28 575x765x630/0.278 42.4
414417 92 S 110 +0.4/-0 930 1x750 0.179 2.25 to 14.25 1.90 28 575x765x880/0.388 56.6
414427 92 S 110 +0.4/-0 1180 1x1000 0.238 3 to 19 2.45 28 575x765x1130/0.498 72.6
7.3 RAUBIOFLEX STD pipe aerator with 1 1/4” thread
Membrane A = 64.5 mm
Connection 1 1/4” ( ISO 7-1)
Membrane A = 64.5 mm
Connection hole D = 45 mm
Flat seal EPDM
7.2 RAUBIOFLEX STD pipe aerator for square air distribution pipe
Eair supply holes
flat joint air distributor
membrane 64.5 x 1.7in EPDM
support pipe in RAU-PP
C
A
B
D
threaded rod in steelair supply holes threaded rod in stainless steel
air distribution pipeflat sealsupport pipe in RAU-PP
membrane 64.5 x 1.7in EPDM
B
A
C
D
E
Article no.
Membrane diameter A
(mm)
Special feature(s) (See note)
Overall length B
(mm)
Effective length C
(mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight (kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton (kg)
412005 64 - 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
412015 64 - 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
412025 64 - 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
412035 64 V 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
412045 64 V 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
412055 64 V 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
Article no.
Membrane diameter A
(mm)
Special feature(s) (See note)
Overall length B (mm)
Effective length C
(mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight (kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton (kg)
412065 64 T 550 500 0.075 1 to 6 0.90 25 380x380x560/0.081 23.8
412075 64 T 800 750 0.113 1.5 to 9 1.20 25 380x380x810/0.117 31.8
412085 64 T 1050 1000 0.150 2 to 12 1.50 25 380x380x1060/0.154 39.5
Note: V - non-return or check valve
Note: T-1 1/4” internal thread (ISO 7-1)
25 24
PROdUCt RANGeRAUBIOfLeX dISC AeRAtOR
8.
8.1 RAUBIOFLEX disc aerator dp
Article no.
Type Special feature(s) (See
note)
Outer diameter D (mm)
Inner diameter p (mm)
Perforated area (m²)
Airflow range (Nm³/hr)
Unit weight (kg)
Make-up per carton
(pc)
Carton size /volume (mm/m³)
Gross weight per carton (kg)
851608 200 - 220 192 0.025 0.5 to 5 0.38 36 705x705x265/0.132 15.6
851688 225 - 254 225 0.037 1 to 7 0.46 48 705x705x265/0.132 24.0
851618 300 - 340 300 0.063 1.5 to 11 0.90 16 705x705x265/0.132 16.4
851628 200 V 220 192 0.025 0.5 to 5 0.38 36 705x705x265/0.132 15.6
851708 225 V 254 225 0.037 1 to 7 0.46 48 705x705x265/0.132 24.0
851638 300 V 340 300 0.063 1.5 to 11 0.90 16 705x705x265/0.132 16.4
Note: V - non-return or check valve
9.AeRAtOR CONSUmABLeS ANd ACeSSORIeS
9.1 Pipe aerator consumables9.1.1 Membranes for pipe aerator
Pipe membrane
Article no. Membrane for Aerator Membrane diameter (mm)
Overall length (mm)
Effective length (mm)
Perforated area (m²)
Unit weight (kg)
Make-up per carton (pc)
Carton size /volume (mm/m³)
Gross weight per carton (kg)
851068 RAUBIOXON PLUS STD 64 560 500 0.075 0.22 50 350x575x113/0.023 11.6
851078 RAUBIOXON PLUS STD 64 810 750 0.113 0.33 50 350x825x113/0.033 17.3
851113 RAUBIOXON PLUS STD 64 1060 1000 0.150 0.44 50 350x1075x113/0.043 23.0
851245 RAUBIOXON PLUS STD 64NG 560 500 0.075 0.22 50 350x575x113/0.023 11.6
851255 RAUBIOXON PLUS STD 64NG 810 750 0.113 0.33 50 350x825x113/0.033 17.3
851105 RAUBIOXON PLUS STD 64NG 1060 1000 0.150 0.44 50 350x1075x113/0.043 23.0
851178 RAUBIOXON PLUS DUO 64 545 500 0.075 0.22 50 350x575x113/0.023 11.6
851188 RAUBIOXON PLUS DUO 64 795 750 0.113 0.33 50 350x825x113/0.033 17.3
851198 RAUBIOXON PLUS DUO 64 1045 1000 0.150 0.44 50 350x1075x113/0.043 23.0
851265 RAUBIOXON PLUS DUO 64NG 545 500 0.075 0.22 50 350x575x113/0.023 11.6
851275 RAUBIOXON PLUS DUO 64NG 795 750 0.113 0.33 50 350x825x113/0.033 17.3
851285 RAUBIOXON PLUS DUO 64NG 1045 1000 0.150 0.44 50 350x1075x113/0.043 23.0
851388 RAUBIOXON PLUS DUO 91.5 545 500 0.119 0.29 50 180x575x350/0.037 15.2
851398 RAUBIOXON PLUS DUO 91.5 795 750 0.179 0.44 50 180x825x350/0.052 23.0
851408 RAUBIOXON PLUS DUO 91.5 1045 1000 0.238 0.57 50 180x1075x350/0.068 29.8
851295 RAUBIOXON PLUS DUO 91.5NG 545 500 0.119 0.29 50 180x575x350/0.037 15.2
851305 RAUBIOXON PLUS DUO 91.5NG 795 750 0.179 0.44 50 180x825x350/0.052 23.0
851315 RAUBIOXON PLUS DUO 91.5NG 1045 1000 0.238 0.57 50 180x1075x350/0.068 29.8
851118 RAUBIOFLEX STD 64.5 560 500 0.075 0.23 25 200x575x105/0.013 6.4
851128 RAUBIOFLEX STD 64.5 810 750 0.113 0.33 25 200x825x105/0.018 9.1
851138 RAUBIOFLEX STD 64.5 1060 1000 0.150 0.44 25 200x1075x105/0.023 12.0
851208 RAUBIOFLEX DUO 64.5 545 500 0.075 0.23 25 200x575x105/0.013 6.4
851218 RAUBIOFLEX DUO 64.5 795 750 0.113 0.33 25 200x825x105/0.018 9.1
851228 RAUBIOFLEX DUO 64.5 1045 1000 0.150 0.44 25 200x1075x105/0.023 12.0
851215 RAUBIOFLEX DUO 92 545 500 0.119 0.35 25 180x575x350/0.037 9.5
851225 RAUBIOFLEX DUO 92 795 750 0.179 0.51 25 180x825x350/0.052 13.7
851235 RAUBIOFLEX DUO 92 1045 1000 0.238 0.67 25 180x1075x350/0.068 18.0
STD - Standard Pipe Aerator
AERA
TOR
CONS
UMAB
LES
AND
ACCE
SSOR
IES
26 27
9.1.3 Fastener for DUOFastener, article no. 351726, is used to secure the DUO saddle onto the round pipe.
9.1.4 Flat seal/O-ring for pipe aeratorRubber flat seals and O-rings are to be replaced when reinstalling pipe aerators to the pipework during maintenance. A pair of new O-rings are needed for each DUO pipe aerator, and one flat seal is needed for each STD pipe aerator.
Article no.
240452
233675
353266
414849
Material
SS 304
SS 316
SS 304
SS 316
Pipe aerator type
64 mm
64 mm
92 mm
92 mm
One-ear clam
Fastener
9.1.2 One-ear clamp for pipe aeratorOne-ear clamp is used to hold the tube membrane onto the pipe aerator’s support pipe. For every membrane sleeve, two one-ear clamp are required.
Article no.
351728
351727
353179
400507
224704
235869
Description
EPDM O-ring 60x4
EPDM O-ring 62x4
EPDM O-ring 90x4
*Silicone O-ring 61x4
Silicone flat seal
EPDM flat seal
Type / Pipe aerator size
DUO/64mm
DUO/64mm
DUO/92mm
DUO/64mm
STD/64mm
STD/64mm
With DUO saddle size
110, 114.3
88.9, 90
110
88.9, 90, 110, 114.3
N.A
N.A
9.2.2 Adaptor for round air distribution pipesTo connect the standard pipe aerator to round air distribution pipe, a poly-propylene (PP) adaptor with EPDM seal is required. The round air distribu-tion pipe has to be rated PN16 or equivalent to resist the stresses induced by the installed pair of pipe aerators.
Article no.
233511
233521
235936
235946
Pipe outer diameter (OD)
88.9/90
110/114.3
140/141.3
160/168.3
PP adaptor for round pipes
9.2 Pipe aerator accesories9.2.1 Adaptor for square air distribution pipes
If the diameter of the opening in the square air distribution pipes is not 45 mm, an adaptor ring with EPDM seal is to be added onto the pipe aerator to ensure that the connection to the air distribution pipe is tight. Depending on the size of the opening, the following adaptors are used:
Article no.
284550
224377
284559
284560
Material
PVC
PP
PVC
PVC
Size of opening (mm)
35
40
50
55
Flat EPDM seal, art. 284449, is to be used. With the addition of such adap-tor on each side of the air distribution pipe, the length of the threaded rod has to be increased by about 20 mm.
Adaptor ring
* To be used only with pipe aerator having the high temperature resistant (H) feature
Flat seal and O-ring
28 29
9.3 Tools for pipe aerator9.3.1 Installation adaptor for standard pipe aerator
For the installation of standard (STD) pipe aerator using threaded rod
connection, an installation adaptor made of stainless steel, art. 248287
is required.
Hand pliers
Installation adaptor
9.3.2 Hand pliers for one-ear clamp installation and removal
For installing and removing pipe aerator’s one-ear clamp, hand pliers, ar-
ticle no. 248217, is required.
Retainer ring
9.4.2 Retainer ring
Retainer ring is used to secure the disc membrane onto the disc aerator’s
base plate.
Disc membrane
9.4 Disc aerator consumables9.4.1 Membranes for disc aerator
Article no. Membrane for Aerator Type Outer diameter (mm)
Perforated area (m²)
Unit weight (kg)
Make-up per carton (pc)
Carton size /volume (mm/m³)
Gross weight per carton (kg)
850228 RAUBIOXON PLUS DISC 200 203 0.025 0.100 50 550x550x260/0.079 5.8
*850368 RAUBIOXON PLUS DISC 225 236 0.037 0.127 50 550x560x260/0.81 7.3
850238 RAUBIOXON PLUS DISC 300 315 0.063 0.250 50 600x400x260/0.063 13.5
851648 RAUBIOFLEX DISC 200 203 0.025 0.100 50 550x550x260/0.079 5.8
851728 RAUBIOFLEX DISC 225 236 0.037 0.127 50 550x560x260/0.081 7.3
851658 RAUBIOFLEX DISC 300 315 0.063 0.250 50 600x400x260/0.063 13.5
9.2.4 End Cap
Should there be a need to install pipe aerator on one side of the air
distribution pipe only, end cap made of PP, art. 291858 can be used to seal
off the other end.
End cap
Article no.
302493
302503
302513
279908
350162
on request
on request
Threaded rod length (mm)
205
225
245
250
270
300
320
For air distribution pipes
80 x 80 x 2
100 x 100 x 3
120 x 120 x 3
DN80 (OD90)
DN100 (OD110)
DN125 (OD140)
DN150 (OD160)
9.2.3 Stainless steel rodStandard pipe aerator can be installed easily in pairs. One end of the pipe aerator has a threaded insert. Two pipe aerators can be connected using a M10 threaded stainless steel rod. Depending on the size of the air distribu-tion pipe, the following rods are used:
Stainless steel rod
* To be available soon
30 31
Disc aerator assembly tool
Article no. PVC outer pipe diameter (mm) Required wall thickness (mm) Weight (kg)
351628 Ø88.9/Ø90 3.9-4.4 0.02
351629 Ø88.9/Ø90 6.4-6.9 0.02
351087 Ø110/Ø114.3 4.2-4.7 0.02
351086 Ø110/Ø114.3 6.5-7.0 0.02
9.6 Tools for disc aerator
9.6.1 Assembly tool for disc aerator
To secure disc membrane onto base plate using retainer ring, a disc
aerator assembly tool, article no. 400535, is required.
9.5.2 Grommet for round pipe
For connection onto round pipe, grommet can be used as the connector.
Avoid using grommet when steel air distribution pipes are used.
Grommet
Article no. Air distribution pipe diameter (mm) Weight (kg)
417081 88.9 + 0.4 - 0.2
0.18
417003 90 + 0.3 - 0
0.18
417005 110 + 0.4 - 0
0.21
417111 114.3 + 0.2 - 0.7
0.21Retainer ring removal tool
9.6.2 Retainer ring removal tool
To remove disc membrane from the base plate, the retainer ring has to be
removed using a retainer ring removal tool.
Article no.
400515
400525
Description
Retainer ring 200/225 removal tool
Retainer ring 300 removal tool
9.5 Disc aerator accesories9.5.1 Disc saddle for round pipe
For connection onto round pipe, disc saddle can be used as the connector.
Disc saddle
9.4.3 Fastener for disc saddleFastener, article no. 351726, is used to secure the disc saddle onto the round pipe.
9.4.4 O-ring for disc saddleTwo O-rings are used to seal each disc saddle onto the round pipe
Fastener
O-ring
Article no.
351728
351727
Description
EPDM O-ring 60x4
EPDM O-ring 62x4
For disc saddle size
110, 114.3
88.9, 90
Article no. Type Outer diameter (mm) Height (mm) Weight (kg)
351139 200 220 28 0.08
354839 225 225 30 0.10
351141 300 340 35 0.20
33 32
9.7.2 Stainless steel pipe clamp
When uPVC pipes are used as air distribution pipe, they have to be
secured to the tank base using stainless steel clamps made from SS 304
or higher grade.
Article no.
236704
236714
DN / pipe outer diameter
80/90
100/110
Stainless steel pipe clamp
32
deSIGN Of AeRAtOR SyStem
10.1 Design of aerator system
10.1.1 General
It is the purpose of each design to supply the required amount of oxygen into
the wastewater under a given set of conditions in the most economical way,
taking into consideration the investment and operating cost.
The design is based on characteristic values for the aeration of clean
water under standard conditions (101.3mbar or 101.3kPa, 20 °C). The
characteristic values are adjusted on the basis of calculated and empirically
determined factors to reflect the actual conditions. Factors that need to be
considered include the wastewater temperature and the air pressure (which
affect the oxygen saturation concentration), increased concentrations of
dissolved salts or surface active substances (surfactants), currents, and the
positions and extents of non-aerated zones.
The graphs for standard oxygen transfer efficiency (SOTE) are derived from
aerator performance tests which are done in tank with clean water under
standard conditions with uniform aerator layout and a tolerance of ±10%.
SOTE and pressure loss graphs for RAUBIOXON Plus and RAUBIOFLEX
aerators can be found in sections 10.1.3 and 10.1.5.
The airflow range and recommended design airflow of the aerators are as
follows:
Type of aerator
Airflow range
Recommended design
airflow range
* Max airflow
64mm pipe aerator 2 to 12 Nm3/h.m 4 to 10 Nm3/h.m 24 Nm3/h.m
92mm pipe aerator 3 to 19 Nm3/h.m 6 to 16 Nm3/h.m 38 Nm3/h.m
Disc aerator 200 0.5 to 5 Nm3/h 1.5 to 3.5 Nm3/h 10 Nm3/h
Disc aerator 225 1 to 7 Nm3/h 2 to 5 Nm3/h 14 Nm3/h
Disc aerator 300 1.5 to 11 Nm3/h 4 to 8 Nm3/h 22 Nm3/h
When selecting the operating airflow range of the aerator, please check that
the minimum airflow of the aerator is sufficient for mixing purpose in all types
of treatment process.
Please provide our Technical Applications Department with details of your
particular requirements using the form provided in Section 11 of this brochure
which lists the required design parameter inputs for sizing.
10.1.2 Arrangement of pipe aerator
Pipe aerators installed on the same air distribution are commonly spaced
between 250 mm and 1000 mm. Air distribution pipes with pipe aerators
installed are normally spaced between 3000 mm and 4000 mm. The spacing
of pipe aerators and air distribution pipes are dependent on the design organic
load. When arranging the pipe aerators, maintenance access requirement
has to be considered.
10.1.2.1 Impact of mixers and recirculation pumps on pipe aerator
arrangement
If mixers or recirculation pumps are used in aeration tanks, the resultant
water currents may produce adverse pipe aerator oscillation. Pipe aerator
to air distribution pipe connections may loosen over time. To minimise this
effect, it is important to ensure that wastewater does not flow across the
10.
Figure 10-1: Arrangement of pipe aerator with consideration of flow direction.
RecommendedDirection of Flow
45°
45°
longitudinal pipe aerator axis at an angle of more than 45° (Figure 10-1).
In addition, adequate distance must be allowed between mixers or
recirculation pumps and pipe aerators. The wastewater flow velocity should
be 0.3 m/s or less at installation locations (Figures 10-2). Flow velocity of
between 0.3 and 0.9 m/s will require pipe aerator fixation (Figure 10-3).
Pipe aerator should not be installed when flow velocity is above 0.9 m/s.
As a rough guide, clearance distance may be 2.5 times the mixer’s impellar
diameter or more. If adequate clearance is not possible, pipe aerator
fixation may be required. Whenever possible, customer should seek the
respective mixer or pump supplier‘s advice on the possible values of flow
velocity induced by their product.
DESI
GN O
F AE
RATO
R SY
STEM
9.7 Air distribution pipe and pipe clamps9.7.1 Air distribution pipe (lateral pipe)
There are two types of air distribution pipes, namely square stainless steel
pipe, grade 304 or higher and round uPVC, ABS pipes. The air distribution
pipes are usually mounted with its center at a distance of approximately
200mm to 300mm from the tank base.
DUO, standard pipe aerator with polypropylene adaptors, disc aerator with
grommet or disc saddle can be installed onto round pipes. However, if
square air distribution pipe is used, only standard pipe aerator is suitable.
For pipe suitability, please check the details pertaining to the respective
connectors ( ie. DUO saddle, PP adaptors for round air distribution pipe,
disc saddle, and grommet).
9.7.1.1 Square air distribution pipe
Material : SS 304 (standard) or higher grade
9.7.1.2 Round air distribution pipe
Material : uPVC, ABS
RAUBIOXON Plus STD pipe aerators installed on SS square pipe
RAUBIOXON Plus STD pipe aerators installed on uPVC round pipe using PP adaptors
* Max airflow is used only during maintenance with a duration limit of 10 minutes per day.
34 35
Figure 10-2: No requirement for pipe aerator support when velocity is less than 0.3 m/s.
CASE 1No requirement for pipe aerator support
Figure 10-3: Pipe aerator support is required when velocity is between 0.3 m/s and 0.9 m/s.
CASE 2Pipe aerator fixation is required
Velocity between0.3 and 0.9 m/s
Velocity 0.3 m/s
Pipe aerator fixation ( design may vary )
Tank base
View A
A
10.1.3 Pressure loss and SOTE10.1.3.1 RAUBIOXON Plus pipe aerator
Figure 10-4: The relationship between pressure loss of the RAUBIOXON Plus standard and DUO ø64mm pipe aerator without non-return valve and specific air flow rate.
Pressure lossRAUBIOXON Plus 64mm pipe aerator
Pres
sure
loss
(mba
r)
Specific air flow rate (Nm3/h*maerator
)
Figure 10-5: The relationship between additional pressure loss of the RAUBIOXON Plus standard and DUO ø64mm pipe aerator with non-return valve and specific air flow rate.
Pres
sure
loss
(mba
r)
Specific air flow rate (Nm3/h-pipe aerator)
70
60
50
40
30
20
10
00 2 4 6 8 10 12 14
Standard oxygen transfer efficiency(at airflow rate of 8Nm3/h*m aerator)
RAUBIOXON Plus 64mm pipe aerator
SOTE
%
Submergence depth (m)
Figure 10-6: The relationship between SOTE of the RAUBIOXON Plus standard and DUO ø64mm pipe aerator and submergence depth.
10
20
30
40
50
60
70
80
03m 4m 5m 6m 7m 8m 9m 10m 11m 12m
Aerator density 30%
Aerator density 20%
Aerator density 10%
Figure 10-7: The relationship between pressure loss of the RAUBIOXON Plus DUO 92mm pipe aerator without non-returm valve and specific air flow rate.
Pressure lossRAUBIOXON Plus 92mm pipe aerator
Pres
sure
loss
(mba
r)
Specific air flow rate (Nm3/h.maerator
)
Additional pressure losswith non-return valve
Standard oxygen transfer efficiencyRAUBIOXON Plus 92mm pipe aerator
SOTE
%Submergence depth (m)
40
35
30
25
20
10
15
3 4 5 6 7
Figure 10-8: The relationship between SOTE of the RAUBIOXON Plus DUO ø92mm pipe aerator and submergence depth.
Aerator Density 10.2%, Airflow 13 Nm3/h.m aerator
36 37
10.1.3.2 RAUBIOFLEX pipe aerator
Figure 10-9: The relationship between pressure loss of the RAUBIOFLEX standard and DUO ø64mm pipe aerator without non-return valve and specific air flow rate.
Figure 10-10: The relationship between additional pressure loss of the RAUBIOFLEX standard and DUO ø64mm pipe aerator with non-return valve and specific air flow rate.
Figure 10-11: The relationship between SOTE of the RAUBIOFLEX standard and DUO ø64mm pipe aerator and submergence depth.
Figure 10-12: The relationship between pressure loss of the RAUBIOFLEX DUO ø92mm pipe aerator without non-return valve and specific air flow rate.
Figure 10-13: The relationship between SOTE of the RAUBIOFLEX DUO ø92mm pipe aera-tor and submergence depth.
Submergence depth (m)
Standard oxygen transfer efficiencyRAUBIOFLEX 64mm pipe aerator
SOTE
%
Pressure lossRAUBIOFLEX 92mm pipe aerator
Specific air flow rate (Nm3/h.maerator
)
Pres
sure
loss
(mba
r)
70
60
50
40
30
20
102 4 6 8 10 12 14 16 18 20
Standard oxygen transfer efficiencyRAUBIOFLEX 92mm pipe aerator
Submergence depth (m)
SOTE
%
40
35
30
25
20
15
103 4 5 6 7
Pres
sure
loss
(mba
r)
Specific air flow rate (Nm3/h-pipe aerator)
70
60
50
40
30
20
10
00 2 4 6 8 10 12 14
Aerator Density 9.7%, Airflow 8 Nm3/h.m aerator
Aerator Density 10.2%, Airflow 13 Nm3/h.m aerator
Pres
sure
loss
(mba
r)
Pressure lossRAUBIOFLEX 64mm pipe aerator
Specific air flow rate (Nm3/h.maerator
)
2 3 4 5 6 7 8 9 10 11 12
Additional pressure losswith non-return valve
10.1.4 Arrangement of disc aerator
In order to maximise the uniformity of bubble distribution, spacing between
disc aerators should be kept as even as possible. Depending on organic
loading, disc aerator 200, disc aerator 225 and disc aerator 300 are
commonly spaced between 350-500 mm, 500-600 mm and 600-800 mm
respectively.
10.1.5 Pressure loss and SOTE
10.1.4.1 Impact of mixers and recirculation pumps on disc aerator
arrangement
Similar to pipe aerators, disc aerators should be installed at a safe distance
from submerged mixers and recirculation pumps, the flow velocity of waste-
water should be 0.4 m/s or less.
Figure 10-14: Pressure loss for RAUBIOXON Plus disc aerator 200
10.1.5.1 RAUBIOXON Plus disc aerator
Specific air flow rate (Nm3/h*aerator)
Pres
sure
loss
(mba
r)
Pressure lossRAUBIOXON Plus disc aerator 200
70
60
50
40
30
20
10
01 2 3 4 5
Disc aerator 200Disc aerator 200 - V
Figure 10-17: SOTE for RAUBIOXON Plus disc aerator 200
Standard oxygen transfer efficiencyRAUBIOXON Plus disc aerator 200
SOTE
%
Submergence depth (m)
33
31
29
27
25
23
21
19
17
153 4 5 6 7
Aerator density10.5%, Airflow 3 Nm3/h. disc aerator
Pres
sure
loss
(mba
r)
Specific air flow rate (Nm3/h*aerator)
Pressure lossRAUBIOXON Plus disc aerator 300
130
120
110
100
90
80
70
60
50
40
30
20
10
02 4 6 8 11
Disc aerator 300
Disc aerator 300 - V
Figure 10-16: Pressure loss for RAUBIOXON Plus disc aerator 300
* Estimated value
*Figure 10-15: Pressure loss for RAUBIOXON Plus disc aerator 225
Specific air flow rate (Nm3/h*aerator)
Pres
sure
loss
(mba
r)
Pressure loss RAUBIOXON Plus disc aerator 225
50
45
40
35
30
25
20
15
10
2 3 4 5 6 7
Disc aerator 225Disc aerator 225 - V
38 39
37
35
33
31
29
27
25
23
213 4 5 6 7
Figure 10-19: SOTE for RAUBIOXON Plus disc aerator 300
SOTE
%
Standard oxygen transfer efficiencyRAUBIOXON Plus disc aerator 300
Submergence depth (m)
Aerator density 10.8%, Airflow 6 Nm3/h. disc aerator
10.2 Measurement of oxygen capacity
Oxygen capacity frequently needs to be determined by testing. Inalmost all cases the measurements to find the amount of oxygenadded are taken in pure water using the absorption method.The first step is to add chemicals to remove all the oxygen from thewater. Oxygen is then added again using the aeration system.The concentration increases from zero to maximum saturation, andthe resulting concentration curve is used to calculate the oxygenabsorption. This is correlated with the power consumption of theblower in order to calculate the specific energy consumption, which isknown as the oxygen gain. In Germany, oxygen uptake measurementsare carried out in accordance with DIN EN 12255-15. However, it is still necessary for certain parameters such as the permissible tole-rances to be specifically agreed between the supplier and the customer.
Figure 10-25: SOTE for RAUBIOFLEX disc aerator 300
SOTE
%
Standard oxygen transfer efficiencyRAUBIOFLEX disc aerator 300
Submergence depth (m)
37
35
33
31
29
27
25
23
21
19
17
153 4 5 6 7
Aerator density 10.8%, Airflow 6 Nm3/h. disc aerator
*Figure 10-24: SOTE for RAUBIOFLEX disc aerator 225
SOTE
%
Standard oxygen transfer efficiencyRAUBIOFLEX disc aerator 225
Submergence depth (m)
33
31
29
27
25
23
21
19
17
153 4 5 6 7
Aerator density 10%, Airflow 4 Nm3/h. disc aerator
Specific air flow rate (Nm3/h* aerator)
35
30
25
20
153 4 5 6 7
Figure 10-23: SOTE for RAUBIOFLEX disc aerator 200
Standard oxygen transfer efficiencyRAUBIOFLEX disc aerator 200
Submergence depth (m)
SOTE
%
Aerator density 10.5%, Airflow 3 Nm3/h.disc aerator
Figure 10-22: Pressure loss for RAUBIOFLEX disc aerator 300
Pres
sure
loss
(mba
r)
Pressure lossRAUBIOFLEX disc aerator 300
130
120
110
100
90
80
70
60
50
40
30
20
10
02 4 6 8 11
Disc aerator 300Disc aerator 300 - V
* Estimated value* Estimated value
10.1.5.2 RAUBIOFLEX disc aerator
Pressure loss RAUBIOFLEX disc aerator 225
70
60
50
40
30
20
10
0
1 2 3 4 5
Figure 10-20: Pressure loss for RAUBIOFLEX disc aerator 200
Pres
sure
loss
(mba
r)
Specific air flow rate (Nm3/h* aerator)
Pressure lossRAUBIOFLEX disc aerator 200
Disc aerator 200Disc aerator 200 - V
*Figure 10-18: SOTE for RAUBIOXON Plus disc aerator 225
SOTE
%
Standard oxygen transfer efficiencyRAUBIOXON Plus disc aerator 225
Submergence depth (m)
39
37
35
33
31
29
27
25
23
21
19
17
153 4 5 6 7
Aerator density 10%, Airflow 4 Nm3/h. disc aerator
Figure 10-21: Pressure loss for RAUBIOFLEX disc aerator 225
Specific air flow rate (Nm3/h*aerator)
Pres
sure
loss
(mba
r)
50
45
40
35
30
25
20
15
10
2 3 4 5 6 7
Disc aerator 225Disc aerator 225 - V
40 41
PROjeCt QUeStIONNAIRe 11.
Design data for: New plant / refurbishment
Municipal / industrial / combined
Size: Population equivalent or m3/day
Type of wastewater:
Type of industry:
Please specify the % of industrial wastewater within the combined wastewater if the type of wastewater is combined:
Is there any organic solvent in wastewater? i.e. toluene, benzene:
Please specify the type and concentration of organic solvent if there is any in wastewater
R
Tank geometry and quantity
Number of identical aeration tanks nos.
Tank dimensions and wastewater levels
Top wastewater level m
Bottom wastewater level m
Design wastewater level m
Outside diameter (Da): m
Radius (R): m
Inside diameter (Di): m
Width (B): m
Length (L): m
Process design parameters for aeration tank
Type of treatment process
Yes / No
42 43
* Optional
** Volume of air at 00C and 1 atm
Type of aerator
Altitude of WWTP/STP above sea level m
Ambient temperature 0C
Wastewater temperature min: max: 0C
Design wastewater inflow per tank m3/hr-tank
Average wastewater inflow per tank m3/hr-tank
Maximum wastewater inflow per tank m3/hr-tank
Inlet BOD min: max: mg/L
Outlet BOD min: max: mg/L
Inlet COD min: max: mg/L
Outlet COD min: max: mg/L
Influent TKN min: max: mg/L
Effluent NH4-N min: max: mg/L
Operating MLSS min: max: mg/L
DO conc.to be maintained min: max: mg/L
Salinity min: max: mg/L
Total oxygen demand (wastewater) per tank (AOR) min: max: kg/h-tank
Total oxygen demand (clean water) per tank (SOR) min: max: kg/h-tank
Air flow requirement per tank * min: max: **Nm3/hr-tank
Type of aeration grid
Blower and mixer details
Make / type Centrifugal / root / others
Please specify if the blower is others
Operating quantity nos.
Blower unit capacity **Nm3/hr
Blower project capacity **Nm3/hr
Maximum operating pressure mbar
Is mixer used in the aerator tank? Yes / no
Please specify its capacity, location and orientation if mixer is to be used in the aeration tank
Please give the address to which you would like the reply sent. For the fastest possible response, please indicate a fax number or e-mail address.
Remarks:
** Volume of air at 00C and 1 atm
Fixed / removable
Disc / pipe
Effektive Vernetzung REHAU AG + Co
Taipei
Pune
Bangalore
QingdaoChengdu
Shenyang
Xi’an
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