Study On Reconstruction Of Combined Drainage System In Beijing Center Area

The pollutionof urban water environmentis serious because of urbanization and industrialization.Urban drainage system is discharged the natural precipitation,industrial wastewater,domestic sewage and other emissions,in order to protect the development of normal and orderly urban.This paper describes the status of Beijing central city combined sewer system.There are 4 rain water basins in Beijing central city.The total length of Beijing rainwater drainage system is 500 kilometers,the total area is 1332 square kilometers.The center of Beijing city is divided into six sewage pipe network,respectively,the sewage pipe network of northeast moat,southeast moat,west moat,QianSanMen and Liangguang street.The combined drainage system exists for a long time in the center of Beijing,which causes the pollution of the overflow and flooding.Water pollution incidents occur frequently,the lake eutrophication is serious.The reconstruction of the drainage pipe network system of Beijing center city is a serious problem to be solved.TWide road should be used actively the shunt system transformation,or interception drainage system.Using a variety of rainwater utilization measures to minimize stormwater runoff,improve city rainfall flood absorption capacity and storage capacity,thus improving the hydrological conditions.The methods of building sewage treatment plant and operating drainage pipe network integration to transform the Beijing drainage system,and meet the needs of urban development.