Some of the technical and mechanical specifications of these Sewage treatment Plants are: Are available in packaged STP. Have rotating biological contractor. The STP that is present in these plants belongs to Electrolysis STP category. The configuration of the STP is as per various Turnkey projects. Tricking filter/ Activated Sludge Process/ Oxidation Pond. Microbial decomposition of the organic matters is taken place and this enables the organic matters to be settled down in presence of oxygen. These plants have membrane Bio-Reactor.