Study On The Improvement Plan Of Urban River Water Pollution

The river is an important natural resource for the city and provides a good foundation for urban development. However, with the continuous expansion of the city, the urban population is increasing and the pollution of the urban rivers is increasing day by day. With the rapid development of China's national economy, the problem of urban river pollution has been paid more and more attention, and the masses of the people have become more and more important to improve the water quality of urban rivers. In order to improve the water quality of urban rivers, many cities adopt different technical means and engineering measures to control polluted rivers, and river water quality improvement planning is an important basis for guiding urban river water quality improvement project. Through the development of scientific and rational planning, Objectives, co-ordinate the implementation of relevant projects,to maximize the effectiveness of the implementation of the project, for urban pollution of river water quality control work has important guiding significance.This paper combs the existing research results at home and abroad, and puts forward the model of river water pollution improvement planning, which is used as a guide to apply it to the concrete work examples of Jianggan District, and the urban water quality pollution improvement plan The practice of exploration, analysis and highlight the importance of water pollution improvement planning, the study of the proposed planning model has a good applicability,can be used as a similar city planning similar reference. The main planning results are as follows:1. The river water quality improvement planning is to guide the city river water quality improvement project important basis, the plan to develop the scientific and the operability, for the city polluted river water quality control work and the related engineering measure has the important guiding significance. In the specific planning,the paper uses the model of "river basic situation analysis - river pollution source analysis - clear governance target - combination of management measures" to prepare the river water pollution improvement plan, has good guidance.2. Through the Jianggan District, different areas of pollution sources analysis,showing the region is more complex pollution situation, in addition to centralized point source pollution, rainfall runoff caused by surface erosion of non-point source pollution can not be ignored. The pollution characteristics of each area can be summarized as three categories: First, the source of pollution-based Pengbu films,Jian bridge; Second, the source of pollution, supplemented by the Southern film,Dingqiao; Third, all types of pollution Accounting for a considerable proportion of different sources of pollution Jiubao tablets.3. For the effective control of various types of pollution sources in Jianggan District, planning measures include: sewage treatment tube management measures to control point source pollution; early rainwater control measures to control the pollution of non-point source; sediment dredging measures to control the river Sediment pollution control; water distribution and drainage control measures as auxiliary measures adopted, that is, the introduction of water, improve water mobility,improve river water quality.4. In order to select the optimal planning scheme, the mathematical model of river hydrodynamic and water quality is constructed. The water level, flow rate and water quality of the mathematical model are verified by the comparison between the measured data and the simulated data. The results show that the mathematical model can be better Reflecting the river water system and water quality situation. Through the analysis and comparison, under the support of the mathematical model, the paper puts forward the planning recommendation scheme of the canal and the canal.5. The canal south of the recommended program is: in the pollution control and urban water quality improvement (IV class) under the premise of the river through the renovation and dredging, Xintanghe diversion pumping station to increase the scale and distribution time, The station will keep the Xintang River drainage pumping station, communicate the end of the new Kaihe River and the end of the Xintang River and other measures to transport the South River water quality can be greatly improved, focusing on improving the river Xinhe River and Xintang River can eliminate bad V and reach Class IV water bodies.6. The canal east of the recommended program: the pollution control, the increase in water diversion and the lower reaches of the city, Yuhang District, the entry of water quality improvement (V water) under the premise of water and water level adjustment and the increase in internal water distribution station , Yun Dong film water quality improved significantly. The area to eliminate the black and smelly goal can be achieved, focusing on improving the port of Hong Kong, Jian Bridge,Jiusha River, Dongfeng Port, large agricultural port, Yokogawa and Mai Miao port and other rivers, can eliminate bad V class, and strive to achieve class IV...