DISSOLVED AIR FLOTATION SYSTEMS

DAF SIGMA

The more versatile clarification water system that allows to solve many needs

The SIGMA DAF flotation systems has become the most versatile clarification system and makes the solution for a wide range of problems.

 

The more versatile clarification water system that allows to solve many needs The SIGMA DAF flotation systems has become the most versatile clarification system and makes the solution for a wide range of problems. Waste water pre-treatment (TSS and FOG removal) Physico-chemical treatments Activated sludges clarification (Biodaf) Sludge thickeners Tap water pre-treatment (TSS and algae removal) RO Seawater pre-treatment (algae removal) Process water treatment (oil recovery) Pulp and paper

Flotation consists of attaching air bubbles to suspended material, causing a net reduction of specific weight. The micron size bubbles are produced by dissolving air into the wastewater at elevated pressures followed by its subsequent release to atmospheric pressure. When the pressure is reduced to atmospheric conditions, the dissolved air, present in excess of saturation, is released as extremely fine bubbles attaching themselves to the suspended solids.

The solids, fats and flocs float to the top of the dissolved air flotation cell and are removed by a skimming or scraping device. To effect flotation, a recycle pressurization system is used. Part of the treated effluent is drawn-off, into which air is dissolved at an elevated pressure and mixed downstream of the pressure release device

SIGMA has developed technology adapted to the many different applications of its flotation equipment DAF offering …

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