Extended Aeration System
Extended aeration system is one of the most widely used biological treatments for sewage treatment. It is a process that uses suspended growth microorganisms to breakdown wastes. For this, the system consists of aeration/mixing settling, return of activated sludge and removal of biomass. A good understanding on the process control of an extended aeration system is paramount to ensure the treatment of sewage is properly carried out to comply with the legislation requirement of effluent discharge quality.