Developing wastewater treatment technologies for small agglomerations

At present is a great number of agglomerations which located far centralized sewerage and use own biological treatment facilities. In years the to the quality of have been thus not the available plants can the required of treatment. The of sewage water into water exceed the levels (maximum concentration) in several such as BOD (oxygen demand), of suspended solids, concentrations of nitrogen phosphorus compounds. the treatment of domestic wastewater of a great importance We analyzed the enabling the of the quality of wastewater treatment the problematic The technology is in two aspects are the of biological treatment tertiary treatment of effluents. Actually, is supposed to be the environmentally friendly. its implementation is with additional costs as well as a compliance with an process conditions are rather to achieve at small plants. The treatment of biologically water granular with a coagulant seems to be a more solution. A project of the sewage facilities of a particular (the educational for children in Krai) is offered. authors suggest a stage of tertiary treatment to reduce concentrations of impurities; existing biological unit is not to be The tertiary treatment unit a sand filter as as a chemical section preparing the of aluminium sulphate. proposed method make it possible to the wastewater so it complies with MAC level discharge this into a fishery