Sludge Treatment and Disposal Technologies of Urban Sewage Treatment Plant

Sludge is the secondary pollutants that come from wastewater treatment.It has become solid waste pollution problem needed to be solved urgently.Combining with sludge reduction,stabilization and change for harmlessness and usefulness,this paper summarized the main theory and techniques of sludge treatment and disposal in municipal wastewater treatment plant at present.Moreover,the advance of research on sludge treatment technology was introduced briefly,the existing problem was analyzed,and the advice for sludge industrial development policy was put forward.