DISSOLVED AIR FLOTATION

Dissolved air flotation (DAF) is an increasingly applied technology for particle removal in water and wastewater treatment. In DAF tiny air bubbles attach to the particles, which float to the surface, forming flocs which can be periodically removed to a sludge channel. 

The process is used to clarify wastewaters (or other waters) by the removal of suspended matter such as oil or solids. The removal is achieved by dissolving air in the water or wastewater under pressure and then releasing the air at atmospheric pressure in a flotation tank or basin. The released air forms tiny bubbles which adhere to the suspended matter causing the suspended matter to float to the surface of the water where it may then be removed by a skimming device

The technique originated in the early 1900s, but has steadily widened its application across municipal and industrial water and wastewater treatment, earning a reputation for reliability, controllability and effectiveness. This method of treatment is mainly used on effluents containing free or emulsified oils, fats and grease and fine particles in suspension. Such wastes can block pipelines and sewers and are undesirable to the Water Services as they can cause problems in the biological treatment systems.

Many types of food production effluents are difficult to treat without first removing the oils, fats and grease concentrations.
Some examples of which are; ABATTOIRS, WHITE & RED MEAT PROCESSING PLANTS, FISH, READY MEALS, MAYONNAISE, BATTERED FOODSTUFFS, SAUCES, OIL BASED DRESSINGS, SCOTCH EGGS, and CHEESE.

Our experience over the years has led us to select components that are well made and will give years of trouble-free reliability.

All our fabrications and ancillary working parts are made from either stainless steel or mild steel, whilst pipework, valves and flanges are often from durable plastic materials.