Enhanced Dissolved Air Flotation (E-DAF) System

E-DAF Model E-820

The Ecologix Enhanced DAF is a complete primary (phys/chem) treatment system. It is an incredibly versatile and efficient combined chemical precipitation and physical separation system. The E-DAF combines several proven technologies such as DAF (Dissolved Air Flotation), ACE (Air Charged Entrainment) and DGF (Dissolved Gas Flotation), into a single platform. Our E Series Dissolved Air Flotation (DAF) systems are the industry standard for efficient removal of Fats, Oils and Grease (FOG), Total Suspended Solids (TSS) and Biochemical Oxygen Demand (BOD) from a wide variety of wastewater streams.

What is Dissolved Air Flotation?

Dissolved air flotation (DAF) is a clarification process that utilizes air to remove suspended matter from the surface of treated water. DAF works by dissolving air under pressure and then releasing millions of tiny air bubbles into the water at atmospheric pressure. This process allows the dissolved air bubbles to adhere to a suspended matter within the water, causing it to come to the surface to be skimmed away. The process is also often assisted by the addition of a coagulant or a flocculant to the flow water, which encourages clustering of colloidal particles. Typically, DAF is used to clarify wastewater from food processing plants, oil refineries, oil fracking operation, chemical plants, and paper mills, among others. A strong DAF system is efficient and can clarify high volumes of wastewater in one session..

Key Features and Advantages

  • Reduced footprint – Compared to any comparable system with similar flow rate/loading levels.
  • High efficiency – Utilizes inclined settling tubes for increased surface area and faster separation.
  • Air scouring – for automatic tube cleaning.
  • Whitewater pumps – robust pumps in combination with saturation tanks provide industry leading reliability and low maintenance whitewater (dissolved air).
  • Countercurrent scraping – for the most efficient separation of sludge from the effluent water. This also allows for more free water to decant prior to sludge removal.
  • Sludge grating/thickening – Prevents sludge migration and thickens it.
  • Fewer moving parts – no need for bottom auger and motor.
DAF Model E-820

Why Chose Ecologix for DAF Systems?

The Ecologix Enhanced DAF (E-DAF) System reduces the environmental footprint and impact when compared with other systems with similar flow rates and loading levels. For the environmentally conscious, this system will be the most efficient.

The E-DAF also facilitates high-efficiency water treatment, meaning faster separation and larger quantities that can be treated on a smaller footprint.

Battle sludge the right way. The system utilizes countercurrent scraping, the most efficient way to separate sludge from the effluent water, minimizing the chances of contamination to the effluent water. Sludge grating/thickening properties, also prevent sludge migration.

E Series DAF/ITS System Rear View

Additional Features and Advantages

  • DAF (Dissolved Air Flotation) and ACE (Air Charged Entrainment) combined into one – attached and entrained air for higher separation efficiencies.
  • Upgradable to a full ITS (Integrated Treatment System) – including upgraded control panel, chemical feed pumps, polymer make down system, flocculation tubes, pre-wired and pretested as a complete wastewater treatment system.
  • Easily converted to DGF (Dissolved Gas Flotation) for refineries and offshore platforms.
  • Built from high corrosion resistant material such as 304SS or 316SS (upon request)
  • Integrated walking mezzanine with stairs.
  • Optional post-filtration filters.
  • Optional dewatering system.

E Series DAF Available Models

Model Max Flowrate* L W H Surface Area
US GPM BPD m3/h ft m ft m ft m ft2 m2
E-405C 130 4,457 26.5 8' 2" 2.5 5' 2" 1.6 9' 4" 2.8 202 18.8
E-505C 173 5,931 35.4 9' 8" 2.9 6' 2" 1.9 9' 4" 3.3 270 25.1
E-505 232 7,954 47.2 9' 8" 2.9 6' 2" 1.9 10' 10" 3.3 362 33.6
E-510 462 15,840 94.3 14' 7" 4.4 6' 2" 1.9 10' 10" 3.3 722 67.1
E-515 695 23,829 141.5 20' 1" 6.1 6' 2" 1.9 10' 10" 3.3 1,085 100.8
E-520 925 31,714 188.7 25' 6" 7.8 6' 2" 1.9 10' 10" 3.3 1,445 134.2
E-815 1,155 39,600 235.4 20 1" 6.3 9' 2" 2.8 10' 10" 2.8 1,804 167.6
E-820 1,540 52,800 313.9 26' 7.9 9' 2" 2.8 10' 10" 2.8 2,405 223.4
E-825 1,924 65,966 392.4 31' 6" 9.6 9' 2" 2.8 10' 10" 2.8 3,006 279.3
E-1025 2,313 79,302 471.7 32' 6" 9.9 11' 2" 3.4 10' 10" 3.3 3,614 335.7
E-1030 2,774 95,108 566.0 37' 11" 11.6 11' 2" 3.4 10' 10" 3.3 4,335 402.7
E-1035 3,237 110,982 660.3 43' 5" 13.2 11' 2" 3.4 10' 10" 3.3 5,058 469.9
E-1040 3,700 126,857 754.7 48' 10" 14.9 11' 2" 3.4 10' 11" 3.3 5,780 537

Enhanced Floctube System

Our innovative DAF system has the option to include an enhanced floctube assembly to increase contact time and improve dramatically system performance. Currently available configurations are listed below.

Model Pipe Diameter GPM m3/hr L W H Chemical Feed Pumps (Add-On)
Straights Returns Min Max Min Max ft m ft m ft m
FLT-215 2" 1 1/2" 20 50 5 11 7' 2" 2.2 2' 6" 0.8 3' 4" 1.0 Additional 12" to Height
FLT-320 3" 2" 40 110 9 25 7' 5" 2.3 3' 0" 0.9 3' 11" 1.2 Additional 18" to Height
FLT-430 4" 3" 90 200 20 45 9' 8" 2.9 2' 6" 0.8 5' 3" 1.6 Additional 18" to Width
FLT-640 6" 4" 160 450 36 102 14' 8" 4.5 3' 0" 0.9 6' 10" 2.1 Additional 18" to Width
FLT-860 8" 6" 300 850 68 193 17' 8" 5.4 4' 0" 1.2 8' 2" 2.5 Additional 18" to Width
FLT-1080 10" 8" 600 1300 136 295 20' 8" 6.3 5' 0" 1.5 9' 7" 2.9 Additional 18" to Width
FLT-1210 12" 10" 900 2000 204 454 23' 8" 7.2 6' 0" 1.8 10' 11" 3.3 Additional 18" to Width

DAF System Applications

The following is a sampling of applications that we have successfully deployed DAF systems.

Download E-DAF Brochure

Learn more about our E-DAF models, flowrates, and design specs.