Contaminants removal in the coagulation process using aluminum sulfate and coagulant aids were studied in the combined sewage in Shanghai,considering its large quality and relative low content of contaminants.

Contaminants removal in the coagulation-flocculation process using ferric sulfate and its aids, applied to a combined sewage in Shanghai, has been studied.

To implement the primary treatment and over of the combined sewage before discharged into rivers is an effective method to reduce the pollutants.

This paper summarized recent development on sediment flux modeling and the SOD of Suzhou Creek contributed by combined sewer overflows(CSOs) was studied using the sediment flux modeling.

Its construction faces more troubles because of a combined sewerage pipe with 5 700 mm×3 000 mm, and the pure distance is 4.

The overflow sewer treatment facility is the main method in controlling the combined sewer overflows(CSOs),and flow-field distribution in the sedimentation tank is the key factor of successful operations.