k hn dissolved air fl otation unit introductio n document

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KHN Dissolved Air Flotation Unit introduction document 

KHN water treatment equipment Co., Ltd.              www.khnwatertreatment.com                  2  

The bubbles are generally below 30um. 

3.  The DAF  adopts  a  new  high  efficiency  grid  reaction  structure, which  has  good 

flocculation effect and power saving. 

4.  DAF  with  automatic  control  box,  after  debugging,  normal  operation  without 

special management, can achieve full automation. 

        Ⅱ、Application of DAF 

DAF  can  be widely  used  in  the  treatment  of  industrial wastewater  such  as  paper 

making, printing and dyeing, electroplating, chemical  industry, food, oil refining and 

so on. 

1. The fiber recovery rate of papermaking wastewater can reach about 95%, the COD 

removal rate is above 85%, and the clean water can be reused completely. 

2. The chroma removal rate of dyeing wastewater is about 90%, the removal rate of 

COD is 60‐70%, and the removal rate of BOD5 is about 50%. 

3. The oil  from  the  refinery wastewater can be  reduced  to below 10mg/L, and  the 

wastewater can reach the level of clarification. 

4. The COD  removal rate of  food, slaughterhouse and  tannery wastewater  is about 

70%, and the chroma removal rate is over 94%. 

5. When the content of chromium, zinc, copper, nickel and lead is below 50 ppm, the 

removal rate of electroplating wastewater can reach more than 90%. 

6.  The bath  turbidity of  the big pool  can be  stabilized below 10 degrees,  and  the 

bacteria in water can be removed more. 

7. The turbidity of drinking water and industrial water can be delivered to less than 5 

degrees, and has a good effect on reducing the color oxygen consumption. 

8. The water content of  the activated  sludge can be  reduced  to about 97% by  the 

secondary common pond after the loanable biological treatment. 

 

KHN Dissolved Air Flotation Unit introduction document 

KHN water treatment equipment Co., Ltd.              www.khnwatertreatment.com                  3  

Ⅲ、specification of Dissolved Air Flotation Unit 

Model

Flow Vessel Size Pump Air

compressor Skimming Interface list Shipping weight Operation weight

m3/h GPM L×B×H(m) kW kW kW Influent

(a)

Effluent

(a)

Sludge

(a)

Empty

(a)

Kgs.

( Lbs.)

Kgs.

( Lbs.)

KDAF001 1 5 1.80×1.00×1.40

(6’0”×3’5”×4’6”) 1.1 / 0.2 DN50(2”) DN50(2”) DN50(2”) DN50(2”) 410(900) 1110(2450)

KDAF005 ~5 20 2.60×1.00×1.40

(8’6” ×3’5”×4’6”) 1.1 / 0.2 DN80(3”) DN100(4”) DN50(2”) DN50(2”) 500(1100) 1680(3700)

KDAF10 ~10 44 2.60×1.80×1.40

(8’6” ×5’9”×4’6”) 1.5 / 0.2 DN80(3”) DN100(4”) DN50(2”) DN50(2”) 610(1350) 3110(6850)

KDAF15 ~15 64 2.10×1.30×2.30

(6’11” ×4’3”×7’7”) 1.5 / 0.2 DN80(3”) DN100(4”) DN50(2”) DN50(2”) 1270(2800) 1840(4050)

KDAF 030 ~30 128 3.00×1.30×2.30

(9’9” ×4’3”×7’7”) 2.2 / 0.37 DN80(3”) DN100(4”) DN50(2”) DN50(2”) 1540(3400) 3020(6650)

KDAF 040 ~40 175 3.90×1.30×2.30

(12’8” ×4’3”×7’7”) 2.2 0.75 0.37 DN100(4”) DN150(6”) DN50(2”) DN50(2”) 2060(4550) 5690(12550)

KHN Dissolved Air Flotation Unit introduction document 

KHN water treatment equipment Co., Ltd.              www.khnwatertreatment.com                  4  

KDAF 070 ~70 302 4.20×2.00×3.10

(13’10” ×6’7”×10’0”) 3.5 1.5 0.37 DN150(6”) DN200(8”) DN80(3”) DN80(3”) 3630(8000) 10750(23700)

KDAF 115 ~115 500 5.30×2.00×3.10

(17’5” ×6’7”×10’0”) 5.5 1.5 0.55 DN150(6”) DN200(8”) DN80(3”) DN80(3”) 4650(10250) 16990(37450)

KDAF 175 ~175 758 6.40×2.00×3.10

(21’0” ×6’7”×10’0”) 5.5 1.5 0.55 DN200(8”) DN250(10”) DN80(3”) DN80(3”) 5400(11900) 20140 (44400)

KDAF 250 ~250 1086 6.40×3.40×3.10

(21’0” ×11’0”×10’0”) 7.5 2.2 0.55 DN250(10”) DN300(12”) DN80(3”) DN80(3”) 6440(14200) 71700(32520)

KDAF 320 ~320 1391 7.50×3.40×3.10

(24’7” ×11’0”×10’0”) 7.5 2.2 0.55 DN300(12”) DN350(14”) DN80(3”) DN80(3”) 7760(17100) 37420(82500)

KDAF 450 ~450 1956 9.00×3.40×3.10

(29’6” ×11’0”×10’0”) 11 3.5 0.55 DN350(14”) DN450(18”) DN80(3”) DN80(3”) 9410(20750) 58040(127950)

KDAF1100 ~1100 4783 9.90×3.50×4.80

(32’5” ×11’6”×15’7”) 35 11 1.1 DN600(24”) DN750(30”) DN150(6”) DN80(3”) 19500(43000) 94800(209000)

KDAF2000 ~2000 8696 13.70×3.50×4.90

(45’0” ×11’6”×16’2”) 70 15 2.2 DN750(30”) DN900(36”) DN150(6”) DN80(3”) 28800(63500) 134040(295500)

 

KHN Dissolved Air Flotation Unit introduction document 

KHN water treatment equipment Co., Ltd.              www.khnwatertreatment.com                  5  

 

      Ⅳ  、The project site 

 

KHN Dissolved Air Flotation Unit introduction document 

KHN water treatment equipment Co., Ltd.              www.khnwatertreatment.com                  6  

 

 

 

 

KHN water treatment equipment Co., Ltd.

                                                            www. khnwatertreatment.com

[email protected]