Study On Water Pollution Conrtol Countermeasures Of Guanting Reservoir

Guanting reservoir is located in the Yongding River to northwest of Beijing, which is the first large-scale reservoir after liberation of China. It is not only one of important water sources for water supply in Beijing but also plays a big role in flood control and power generation. Because of water pollution, there is no Guanting reservoir for water supply in Beijing since 1997. Water quality of Guanting reservoir can't reach the standard of drinking water, though water quality improved with the increasing of further efforts to manage environmental in recent years. Beijing is a water shortage city, with the rapidveconomic development and social progress; the contradictions of water supply for cities are becoming increasingly evident.There are three rivers merge into Guanting reservoir, Yang Rive and Sanggan River and Guishui River. Yang River and Sanggan River flows through 11 districts in Zhangjiakou, and then they merge into Guanting reservoir, the incoming water quality of which is the key to preservation of water quality for Guanting reservoir.By the investigation of river basin water quality and present situation of pollution sources,The paper analyse the water contamination causes, Work out the general plans and implementing schemes for water pollution control, puts forward the technical measure and management measures for water pollution control. The achievements in paper can provide important basis for improve water quality, resume the function of drinking water source and keep meeting national standards of drinking water function and achieving Class II water quality.Main research results were as follows:(1) According to the analysis of the present situation investigation results, the paper put forward major cause that there was not a fundamental turn for water quality. It includes: unreasonable industrial structure, sewage treatment's construction standards was to be enhanced, non-point pollution control measures were backward, the environmental management measures was not perfected and pollution control plan wasn't implemented(2) Scientific and reasonable industrial pollution controls were formulated in the paper, urban sewage pollution control and rural non-point pollution control planning program. It provided a basis for solving the problem of Guanting reservoir upstream region water pollution control as a whole.(3) In view of the present environmental management problems, forward control measures were putted forward. According to the differences characteristic of industrial pollution control, urban sewage emission control and rural non-point pollution control, the paper putted forward financially feasible solution, which could provide the technical support for controlling pollution.(4) The predicted results indicated that COD will be cut 44.7%and NH3-N will be cut 51.2% after planning control projects implemented, which will make the basin pollutant discharge be effectively controlled, and which will play an important role to improve Guanting reservoir incoming water quality.