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Flotation & DAF Units

Flotation & DAF Units


Dissolved Air Flotation (DAF) Units and the new GEM (Gas Energy Mixing) Flotation technology offer a compact and easy solutions for the treatment of many effluents.

Combined with physio-chemical pre-treatments, such as coagulant, pH adjustment and flocculation the results can be outstanding, offering considerable reductions in effluent disposal costs whilst also opening up the opportunity for water re-use/recycling.

DAF units clean waste water by dissolving air in the water under pressure and then releasing the air at atmospheric pressure in a flotation tank basin, in order to remove suspended matter such as oil or solids.

If onsite space is an issue, then the next generation GEM flotation technology allows for compact treatment systems up to 50% smaller than conventional DAF technologies, as well as allowing for the possibility of plant upgrades to boost capacity by up to 30%.

GEM systems induce air into 100% of the waste stream and separates solids and liquids using CWT’s patented technology. Capacities from 3 to 250 m3/hr are available.

These systems offer effective solutions for the removal of solids from wastewater streams, offering a number of advantages, including:

  • Small plant footprint
  • Higher sludge solids content (typically 4%TS vs. 1%TS) resulting in a much lower sludge volume
  • Ability to handle bulking solids that tend to float
  • Reliable and consistent effluent quality

Our DAF units are very widely used in treating the industrial wastewater effluents from food factories, oil refineries, petrochemical and chemical plants, paper mills, general water treatment and similar industrial facilities.

A DAF unit was implemented as part of the solution at Greenyard Frozen Food’s vegetable processing site. The complete plant was built under CDM regulations and was fully operational within four months of order placement. Read more here.

The expert MSE Systems team will advise whether a GEM flotation or DAF unit is best suited to your specific needs. To discover more, please get in touch.

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