HSAF

Submerged aerated filter systems for use in treatment of liquids including water, industrial waste water and sewage, and parts thereof and fittings therefor, namely spargers, buoyant media, hydraulic distribution and collection systems, sludge collection systems, control systems and air supply systems

Construction, repair and refurbishment of installations and apparatus for the purifying of water, waste water and sewage

Treatment of water, waste water and sewage