degremont water clarification technologies · aquadaf water clarifier tk halli wtp, bangalore -...
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• HEADWORKS• BIOLOGY• SEPARATION• MEMBRANE• DISINFECTION• BIOSOLIDS• REUSE
DegremontWater Clarification Technologies Case Stud y of AQU AD AF Clarifier
DegremontDegremontWater Clarification Technologies Water Clarification Technologies Case Stud y of AQU AD AF ClarifierCase Stud y of AQU AD AF Clarifier
presented by
Mukesh GROVERTech nical Dir ecto r
presented bypresented by
MukeshMukesh GROVERGROVERTech nical Dir ecto rTech nical Dir ecto r
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
Sl ide: 2
Degremont Water Clarification Technologies
q Turbocirculator - solids contactq Densadeg - high rate solids contact with lamella tube q Pulsator - pulsating sludge blanketq Pulsatube - pulsating sludge blanket with lamella tubesq AquaDAF - very high rate dissolved air flotation
Degremont Water Clarification Technologies
q Turbocirculator - solids contactq Densadeg - high rate solids contact with lamella tube q Pulsator - pulsating sludge blanketq Pulsatube - pulsating sludge blanket with lamella tubesq AquaDAF - very high rate dissolved air flotation
•• Recy cle/Reus eRecy cle/Reus e•• Bios ol idsBios ol ids•• DisinfectionDisinfection
•• MembraneMembrane•• SeparationSeparation•• BiologyBiology•• Headwor ksHeadwor ks
Wide range of t reatment solutions Wide range of t reatment solutions
Degremontover 70 years of providing treatment solutionsDegremontover 70 years of providing treatment solutions
Water India 2011 (Delhi )
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Clarification (<50 NTU)
Clarification (>10 NTU)
Clarification, Softening, Storm
water c larification, Filter Washwater
clarification
Clarification, Softening
Ty pi cal A ppl ic ati on
Bangalore25.0 to 40.0AquaDAF
Delhi, Chennai, Bangalore,
Mumbai, Kolkat ta
2.5 to 4 .04.0 to 8 .0
PulsatorPulsatube
Delhi, Bangalore10.0 to 20.0 (upto 30 for softening)
(upto 100 for storm water)
Densadeg
Delhi, Angul(Orissa)
2.0 to 3 .5(upto 5.0 for softening)
Turbocirculator
Maj or I ndi an Ins ta lla ti ons
Ty pi cal Cl ar ifi ca ti on Ra te s (m/hr )
Clar if ic ati on Te chnol ogy
Degremont Clarif ication TechnologiesTypical Clarification Rates and ApplicationDegremont Clarif ication TechnologiesTypical Clarification Rates and Application
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
Sl ide: 4
Turbocirculator Clarif ierHigh rate solids contact type reactor clarifierTurbocirculator Clarif ierHigh rate solids contact type reactor clarifier
Featu res:• Simple & robust process
• Very efficient
• Multiple application
Typical applications:• DW : Clarification, Lime Softening, Presettler• WW : Primary & Tertiary Clarification• IWW/PW : Carbonate removal, Metal Precipitation,
Colour removal
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
Sl ide: 5
Densadeg Clarif ierHigh rate solids contact type Lamella clarifierDensadeg Clarif ierHigh rate solids contact type Lamella clarifier
Featu res:• Compact, Versatile & robust
• Inbuilt Thickener
• Very efficient
• High Quality Water
• Multiple appl ications
Typical applications:• DW : Clarification, Lime Softening • WW : Primary & Tertiary
Clarification• IWW / PW : Carbonate removal,
Metal Precipitation, Colour removal
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
Sl ide: 6
Pulsator Clarif ierPulsating sludge blanket type clarifierPulsator Clarif ierPulsating sludge blanket type clarifier
Featu res:• Modular & robust process
• Rectangular Flat Bottom RCC Tank
• No underwater moving parts
• Even water distribution over entire bottom
• Even sludge withdrawal across the tank
Typical applications :• Raw Water Clarification (River, Dam, Reservoir)• Clarification of Water with Algae
• HEADWORKS• BIOLOGY• SEPARATION• MEMBRANE• DISINFECTION• BIOSOLIDS• REUSE
AquaDAF ClarifierHigh-Rate Dissolv ed Air Flotation Technology by Degremont
AquaDAF ClarifierHigh-Rate Dissolv ed Air Flotation Technology by Degremont
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
Sl ide: 8
AquaDAF Water Clarif ierDissolved Air Flotation processAquaDAF Water Clarif ierDissolved Air Flotation process
Featu res:
• Simple & robust process
• Very small footprint
• Modular
• Polymer not necessary
Typical applications:• Clarification of low turbidity waters• Water with low density solids (i.e. Algae, etc.)• Water with high TOC • Cold waters; Thermal variation• pretreatment before Membrane filtration
Typical applications:• Clarification of low turbidity waters• Water with low density solids (i.e. Algae, etc.)• Water with high TOC • Cold waters; Thermal variation• pretreatment before Membrane filtration
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
Sl ide: 9
AquaDAF Water Clarif ier Internal System (HF Model)AquaDAF Water Clarif ier Internal System (HF Model)
Sludge Channel
Flotation Zone
Mobile WeirHydraulic Flocculation
Air-WaterDispersion Zone
Coagulated Water Inlet(after Flash Mixer)
Flash Mixer
Accumulated Sludge Layer
False Fl oor
Transition Zone
Clarif ied Water
Channel
Compressed Air
Raw water
Clar ified Water
Sludge
Recycled clarified water
Water India 2011 (Delhi )
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AquaDAF Water Clarif ier Operating PrinciplesAquaDAF Water Clarif ier Operating Principles
Recycle St ream:• Recycle flow: 8-10% of throughput • Recycle flow Operating Pressure: 4- 5 bar
• Unpacked Saturator Vessel
• Compressed air injection
Micro-Bubble P roduction:• Bubbles production : special depressurization nozzles
• Bubble diameter: Range 10-100 µm
• Air Blanket: Milky appearance
• Solids adhere to bubbles and float to surface
• Continuous production of air blanket
Water India 2011 (Delhi )
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AquaDAF Water Clarif ier AdvantagesAquaDAF Water Clarif ier Advantages
• Flexible & Robust :• treats water with temperature >3°C• best solution for low turbidity / high algae
raw water• adapts to occasional peaks of TSS or
Turbidity upto 200 NTU.
• Cost effective :• Reduction in the time required for the
response to 5 min • Decrease the size of footprintwhile
retaining its performance.
• Easy to operat e :• Easy to operate and maintain (very few
mechanicals, no lamella modules, no c logging)
• No need to add material to weigh down the flocs.
• Instantaneous Start and Stop.Water India 2011 (Delhi )
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AquaDAF Water Clarif ier Major References worldwideAquaDAF Water Clarif ier Major References worldwide
•• USA USA -- SenecaSeneca 23 MLD23 MLD•• USA USA -- South San South San JoaquimJoaquim 34 MLD34 MLD•• FRANCE FRANCE -- St BrieuxSt Brieux 35 MLD35 MLD•• CANADA CANADA -- GatineauGatineau 44 MLD44 MLD•• CHINA CHINA -- Macao Macao 60 MLD60 MLD•• FRANCE FRANCE -- ApremontApremont 72 MLD72 MLD•• USA USA -- White TanksWhite Tanks 77 MLD77 MLD•• USA USA -- Lake de ForestLake de Forest 80 MLD80 MLD•• CHILE CHILE -- MineraMinera EscondidaEscondida 92 MLD (sea water)92 MLD (sea water)•• CHINA CHINA -- Qin Qin GzhenGzhen 106 MLD106 MLD•• BRAZIL BRAZIL -- ManaosManaos 285 MLD285 MLD•• SPAIN SPAIN -- BarcelonaBarcelona 480 MLD (sea water)480 MLD (sea water)•• BAHRAIN BAHRAIN -- Al Al DurDur 575 MLD (sea water)575 MLD (sea water)•• INDIA INDIA –– BangaloreBangalore 600 MLD (600 MLD (u/cu/c))•• USA USA –– HowarthHowarth, NJ, NJ 770 MLD (770 MLD (u/cu/c))
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
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AquaDAF Water Clarif ier TK Halli WTP, Bangalore - Project Fact Sheet AquaDAF Water Clarif ier TK Halli WTP, Bangalore - Project Fact Sheet
Jan-Feb 2012 • Commission ing
Water Line : Cascade Aerator + Prechlorination + Flash Mixer (with alum) + AquaDAFAquaDAF Clarfier + Aquazur VRapid Gravity Sand Filter + Post chlorinationSludge Line : Sludge Thickener + Mechanical Dewatering
• Treatment Line :River Cauvery, from Shiva Balancing reservoir• Raw water source :
Drinking water production for Bangalore c ity and suburbs• Objective :TK Halli (~85 km from Bangalore c ity)• Location :
Bangalore Water Supply and Sewerage Board• Client :
• Main driv ers in technology selecti on- Highly Rocky Terrain, hence small footprint for fast & opti mum construction cost- Low turb idity water, but with spikes- Light solids , requiring high chemical consumption for c larification by settling- A lgae, incidental increase in algae in raw water affecting the fil ters- Direct Fi ltration mode operation when Turbidity < 5 NTU (to op timise OPEX)
• Main driv ers in technology selecti on- Highly Rocky Terrain, hence small footprint for fast & opti mum construction cost- Low turb idity water, but with spikes- Light solids , requiring high chemical consumption for c larification by settling- A lgae, incidental increase in algae in raw water affecting the fil ters- Direct Fi ltration mode operation when Turbidity < 5 NTU (to op timise OPEX)
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
Sl ide: 14
AquaDAF Water Clarif ier TK Halli WTP, Bangalore - Project Fact Sheet AquaDAF Water Clarif ier TK Halli WTP, Bangalore - Project Fact Sheet
Footprint = 4 ,000 m2 < < < 1 /4th of are a re qd. by Lamel la Clar i fier > >>
Hydraulic Desludging – by Mobile Weir on c larified water s ideFlocculation – Hydraulic
28 m3/m2.hr design clarification rate
10 units x 90 m2 each• AquaDAF HF30
72 hrs (3 days)-Longer Filter runs
< 0.5 NTU< 5 NTU (typically< 2 NTU)Treated water quality (turbidity)
< 2%-Water loss
-20 NTU (90%iles), 100 max.Raw water quality (turbidity)
600 MLD600 MLDPlant treatment capacityOverall PlantAquaDAFDesign Perfo rman ce
Water India 2011 (Delhi )
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AquaDAF Water Clarif ier TK Halli WTP, Bangalore – Project Fact SheetAquaDAF Water Clarif ier TK Halli WTP, Bangalore – Project Fact Sheet
Cascade aerator
AquaDAF(10 un its)
ParshalFlume
Flash Mixer
Aquazur V Rapid Gravity S and Filters (24 units)
Flash Mixer (2 sets)
S ludge Thickener, Dewatering Building
Water India 2011 (Delhi )
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Sl ide: 16
AquaDAF Water Clarif ier Photo GalleryAquaDAF Water Clarif ier Photo Gallery
Battery of AquaDAF
Water India 2011 (Delhi )
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AquaDAF Water Clarif ier– Photo GalleryAquaDAF Water Clarif ier– Photo Gallery
Air-water saturator
False floor
Nozzles fo r microbubl es producti on Water India 2011 (Delhi )
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Uniform Air Blanket: Milky appearance
AquaDAF Water Clarif ier– Photo GalleryAquaDAF Water Clarif ier– Photo Gallery
Water India 2011 (Delhi )
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Sl ide: 19
Floating Sludge Formation
AquaDAF Water Clarif ier– Photo GalleryAquaDAF Water Clarif ier– Photo Gallery
Water India 2011 (Delhi )
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Floa ting Sludg e
Clarified Water under Floating Sludge
AquaDAF Water Clarif ier– Photo GalleryAquaDAF Water Clarif ier– Photo Gallery
Hydraulic Desludging
Water India 2011 (Delhi )
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Sl ide: 21
Thank you...Thank you...
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
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Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
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DAF S yst em High-Rate AquaDAF Clarifi er
Speci al False Floor =+
In AquaDAF, a special false floor is construc ted (Plastic/wo ode n panels) w ith a special hole pattern. It introd uces flow resistance an d promotes unif orm flow dis tr ibuti on.
As loading rate o n a co nvent ional system increases t here is a tende ncy f or short-circuit ing a nd bubb le bla nket ex pansi on. This can lead to s olids c arry over.
Headloss across the floor creates a circular flow pa ttern. T he hi ghly concen trated b ub ble bla nket i s maintained i n th e floa t area at rates of 20 m3/m2//hr and higher.
AquaDAF Water Clarif ier Key to High-Rate OperationAquaDAF Water Clarif ier Key to High-Rate Operation
Water India 2011 (Delhi )
• HEADWORKS• BIOLOGY• SEPARATION• M EM BRANE• DISINFECTION• BIOSOLIDS• REUSE
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AquaDAF Water Clarif ier Key to High Rate OperationAquaDAF Water Clarif ier Key to High Rate Operation
Special False Floor:
• Irregular hole pattern
• Headloss across floor creates acircular flow pattern within basin
• Introducing flow resistance to create uniform flow distribution
• Highly concentrated bubble bedmain tained within f loat area
• Enhanced coalescing of s ludge
• High clarification rates: 25 to 40 m3 /m2/hr
Special False Floor:
• Irregular hole pattern
• Headloss across floor creates acircular flow pattern within basin
• Introducing flow resistance to create uniform flow distribution
• Highly concentrated bubble bedmain tained within f loat area
• Enhanced coalescing of s ludge
• High clarification rates: 25 to 40 m3 /m2/hr
CFD M odel