Researches On Water Environmental Carrying Capacity And Countermeasures Against Pollution Control In Major River Valleys And Regions In Qingdao City

Rapid economic development consequentially leads to increased quantity of industrial enterprises, industrial water consumption and discharge year by year. Urbanization results in increased urban population year after year and urban living pollution becoming the main source of pollution to water body. The effects of country living contamination, urban runoff contamination, livestock and poultry farm runoff and other pollutions on the water environment make the water body suffering hard. Water environmental protection has become the current first-class job of environmental protection. The water environment carrying capacity is needed to be researched to ensure steady economic development and to ensure the water environment function not to be affected. It is necessary for healthy development of valley to across-the-board study major river valleys and regions and to measure for measure propose the plan of treatment and protection."Rounding Protection and Development of Jiaozhou Bay"is the key development strategy of Qingdao in the future. So it is necessary to study the water Environment carrying capacity of main valleys and the measures to control pollutions around the bay.On the basis of the study of the water environmental carrying capacity, the water environmental capacity of major river valleys and regions are calculated. The contribution rates of different contamination are calculated according to the calculation of pollutants inflowing into the rivers. Being compared with pollutants inflowing in the river, valley capacity and using function, the reducing guideline and plan of controlling pollution are presented. Prediction method of various contaminations affecting river valleys and regions is studied by the prediction analysis of"12th Five-Year Plan"economic and social development. And at the same time the amount of contaminations which is needed to be reduced is accounted and the pertinent pollution control programs are presented combined with the adjustment of use function and related regional development orientation. To analyze the evaluation results of water environmental carrying capacity of drainage area, the measures and advices to improve water environment of drainage area and upgrade the water environmental carrying capacity are put forward in the paper. The measures and advices could provide technological basis for the sound development of valleys, the water quality protection of Jiaozhou Bay and the implement of"Rounding Protection and Development of Jiaozhou Bay"strategy.Research results and innovation points are including:1.The water environmental carrying capacity evaluation model, major calculating parameter and evaluation index system of water environment in main valleys are confirmed. Then the water environmental carrying capacity is calculated. The demanding water quality in main valleys and reducing guidelines are presented and suggestions and measures to control water environment pollution and enhance the water environmental carrying capacity are proposed in the paper combined with water environmental carrying capacity of Jiaozhou Bay and the calculated capacity of Dagu River.2.The calculation method about the amount of pollution that inputs into the river from the point sources and non-point sources is studied in a way by combining experiment method with experience method. The calculation model, parameters, pollution source strength coefficients of agricultural runoff and urban runoff are fixed on. The amount of pollution and share-rates from different sources are calculated in order to offer a foundation for the pollution decreasing and effective control on pollution sources. It is also provided technical support for the study of pollution quantity and its influence on water environment.3.The amount of industrial sewage in 2015 is predicted in the way of research combining the industrial added value of thousand yuan sewage coefficient and industrial sewage coefficient with centralized treatment facilities to upgrade the building. By focusing on the predictions of selection and development of villages and towns and population growth in urban and rural areas, the researches on calculation method and account of contaminations from living inflowing into the river are carried on. Through studies of non-point source pollution prediction, the predictions of emission quantity of agricultural runoff and of livestock and poultry pollutants are made. The pollutant reduction targets are established through calculation by analysis of various sources contribution rates combined with water environmental carrying capacity and functional requirements of water use.4.Through the calculation of the carrying capacity of water environment and the orientation of water environment function, the economic carrying capacity of river valleys and regions and population capacity are forecasted, and instructional recommendations on the development of rives valleys and regions are put forward.5.Combined with domestic and international eco-remediation features, ecological remediation recommendations are brought forward according to three aspects mainly including feasibility study on the control of water monitoring section quality, reduction targets of contaminations of main rivers, pollution control measures against river valleys and regions. The environmental constraints that are faced by major river valleys and regions and strategy of sustainable development of river valleys and regions economy and advices about more in-depth research on existent problems are brought forward in the end of the paper.