Innovative methods of wastewater treatment

Abstract

The experience of usage of sewage treatment plants has shown that if we desist from the usage of primary settlements of domestic wastewater, we solve a problem with thickening, processing, transportation and placement of raw sludge. Of course, the grates for screening the waste and sand traps for removal of mineral pollutions from wastewater is still very important part of the treatment facilities. If we desist from the usage of primary settlements, we should pay great attention to the modernization and intensification of the work of sand traps and grates. Unlike with a raw sludge, waste from grates and sand mixture from sand traps can be easily recovered in an ordinary urban landfill with a solid household waste. The most part of Western countries stop to use primary sedimentation of municipal wastewater; the Russian Federation still employ this method. At the same time, the residual floc can be completely mineralized by active sludge.