Discussion of sewage sludge treatment on small towns in western China

Nowadays the speed of urbanization is fast in China. And the quantity of sewage discharged from cities and towns is increased year by year. When sewage is treated, a large number of complex components of sludge will be produced inevitably at the same time. If effective treatment is not taken up timely, it would became a direct or potential threat for environmental. In this article, we discuss several effective methods of sludge treatment. According to the current status and characteristics of sludge treatment in western town. We believe that they will be the directions of development of sludge treatment and disposal for some time in the future which sludge will be back to field or be changed into biogas.