Engineering Technology for Controlling Non-point Source Pollution in Beijing Urban Rivers and Lakes

Non-point source pollution is an important pollution source which should not be ignored for urban waters,and it is more and more serious with the decrease of clean water supply and the lack of water flow.The engineering technology for controlling non-point source pollution of the rivers and lakes in Beijing was introduced,including technical principle,construction content and operation performance.The results indicated that adjusting measures to local conditions,adopting the engineering technology which fit for the urban rivers and lakes' hydraulic and structure characters had good effect on controlling the non-point source pollution of Beijing urban rivers and lakes,especially for suspended solids,organic substance and total phosphorus,the removal rate was more than 60%,the water quality of effluent was improved.