Technological Design of Sewage Disposal in Small Town of China using SBR Method

Abstract

The study is related to the drainage engineering design of a small town in Shenyang City, the People’s Republic of China. The purpose of this study is to resolve the problem of pollution to the local river that adversely affects the local residents’ living and constrains economic development.

This sewage disposal plant is located in the northeast of the small town and at the east side of the river. The sewage is mainly from the local urban wastewater and a little from the industrial wastewater. The total quantity of sewage is 56689m3/d. The BOD, SS, and COD of the sewage seriously run out of the limit. According to the feature of the sewage, economic effect, disposal efficiency, and technical factors, the SBR technology (i.e. Sequencing Batch Reactor Activated Sludge Process) that has a high purification efficiency and automation, less cost, and steady disposal effect is adopted.

The paper involves in a detailed design and calculation for the structure of the grille, grit tank, SBR reactor tank, and disinfection contact tank.