Video: PWL Open Tank DAF

Exclusive Open Tank DAF System Video

The PWL Open Tank DAF is ideal for wastewater that is heavily loaded with solids. This DAF is a must when it comes to operations within wastewater plants. Its simple design is easy to operate, resilient to process changes, generates extra-dry sludge and uses standard parts. Dissolved air flotation (DAF) is a proven and effective physical/chemical technology to treat industrial and municipal wastewater streams.

Features Include:

  • Open Floatation Cell
  • Large Free Surface Are
  • Flow-Through Hydraulic Pattern
  • Low-Built Tank
  • All Stainless Steel Construction

The counter current skimmer shortens the sludge skimming distance and eliminates solids carry-over.  Its unique design elements include a dewatering grid, an air dissolving tube and ANSI recycle pumps. Its dewatering grid stabilizes float sludge at the water’s surface, allows sludge to self-dewater, prevents pre-mature migration of sludge and restricts re-entrainment of floating sludge. The air dissolving tube guarantees that the air is dissolved in the tube and not in the recycle pump!  This allows for an increase in pump performance, extended pump life and increased saturation efficiency. The ANSI Pump is a manufacturer agnostic that has a high tolerance with low operating pressure and low cost of ownership!

Specifications of the PWL Open Tank DAF:

  • Free Surface Are up to 520 sqft
  • Flow Rates up to 2,000 gpm
  • Tank Height from 8 to 10.5

A dissolved air flotation system is used to effectively remove suspended solids such as TSS, FOG, BOD, COD and other contaminants from wastewater. Conceptually, the DAF wastewater process is simple – tiny bubbles attach to solid contaminants causing them to float and then sludge is skimmed off the surface of the water!

Watch this DAF in action with the video below, or click the link to view in our video library.

 If you’d like to discuss a wastewater application where you’re thinking about employing a DAF system, contact us – we’re glad to help. Or you can visit our Knowledge Center to learn more about DAFs!