Activated Sludge (AS) is a process dealing with the treatment of sewage and industrial wastewaters and developed around 1912-1914.

There is a large variety of design, however, in principle all AS consist of three main components: an aeration tank, which serves as bio reactor; a settling tank (“final clarifier”) for separation of AS solids and treated waste water; a return activated sludge (RAS) equipment to transfer settled AS from the clarifier to the influent of the aeration tank.

Aeration Process

Sewage liquor is run into deep tanks with diffuser blocks attached to the floor. These are like the diffuser blocks used in tropical fish tanks but on a much larger scale. Air is pumped through the blocks and the curtain of bubbles formed both oxygenates the liquor and also provide the necessary stirring action.

APG-Neuros has hundreds of Installations in activated sludge wastewater treatment plants across North America and worldwide, APG-Neuros helps these plants of reaching millions of OPEX savings due to high efficiency as well as low maintenance.