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.

Measuring system for sewage flow based on ultrasonic wave;

The article uses the different standards to forecast the sewage flow within the planning period of Yinzhou New City Area, and uses the planned water consumption to check.

For the measurement of industrial sewage flow,a measuring system for sewage flow based on ultrasonic wave is introduced.

Yangzhou City sewage interception project is responsible for sewage and part of rainwater collection and transmission in the old town, the southeast, and the northeast parts of the city.

The design of the sewage interception and the!key points during construction were detailed including determination of the overall plan,design of the intercepting well and sewer,choice of pipe,foundation treatment,revetment repair and reinforcement and so on.

Aiming at the three sewage interception facilities(Da Wuchuan,Changqiao and Meilong) of Suzhou River water system sewage interception and treatment project,the detailed design plan and construction were put forward by the author.