| As the largest reservoir in Xiao River, Songta Reservoir is a large, comprehensive reservoir which is mainly supplied by city life and industrial water, as well as generating electricity. Reservoir control drainage area is1174km, average annual run off is79,466,000m, total capacity is112.1million m3. Songta Reservoir can supply23,070,000m3water for city life and industrial of Yuci, guarantee irrigation water of35.2million acres farmland in Xiao River Irrigation, get generation electric power capacity is up to5,870,000kW/h annually, and to some extent, reduce floods in middle and lower reaches of the river, and play an enormous role in promoting developing local industrial and agricultural and the national economy. Reservoir began filling in2011, due to the reservoir can supply water for city life, so the problems of the water quality, eutrophication and sustainable water supply cause wide public concern from governments and many scholars. Therefore, Jinzhong Songta Water Resources and Hydropower Co., Ltd. established the research which entitled "The Research on Water Resources Sustainable Utilization Integration Technology in Xiao River ", the purpose is to study the scheme of water environmental prediction and pollution prevention and protection, to ensure supply of sustainable water resources, benign circulation of water and sustainable development of social economy.This paper was according to the research project "Xiao River Basin Water Resources Sustainable Utilization of Integrated Technology ", which was commissioned by Jinzhong Songta Water Resources and Hydropower Co., Ltd. The field monitoring was the main method, as well as some laboratory tests. Field trials combined with the theoretical studies. Treatment methods, ideas, technical support and solutions of water pollution in lakes and reservoirs were proposed by the comprehensive research methods which combining specialized technical research and the present technological achievements. The results had provided decision support and technical support for the protection of other lakes as well as water reservoirs and the sustainable use of regional water resources.Based on domestic and foreign water pollution comprehensive management theory and practice of lakes and reservoirs, on the basis of full investigation and study, from analyzed historical data, water environment status as well as future trends of Songta Reservoir, positioning and quantitative contamination sources, type, spatial and temporal distribution, eutrophication dynamic; diagnosed Xiao River existed in water resources development, management, use and control of water bodies, such as the problems of environmental protection; to protect drinking water of Songta Reservoir for the target functional areas, established water quality prediction model; According to the actuality of Songta Reservoir upstream reservoir water pollution control and and treatment measures that might be taken to predict the future, put forward engineering, biotechnology, scheduling technical, administrative and legal regulatory measures for the integration of environmental Songta Reservoir water control and protection integrated technology and integrated solutions.Paper obtained the following findings:(1) In combination with water environment pollution status of Songta Reservoir to analysis, identified the reservoir’s main pollutants are chemical oxygen demand, ammonia, total nitrogen, total phosphorus, and reveals the temporal and spatial variation of water environment of Songta Reservoir. From the time, the maximum concentration of chemical oxygen demand appeared in March of the dry season, the minimum appeared in July of the wet period. The concentration of ammonia nitrogen and total nitrogen were lowest in December, and reached the maximum in April. The change of total phosphorus content showed obvious seasonal, the dry season low, and wet period was significantly higher than other times. From the space, entrance of reservoir (Kuwei) is poor water quality in the reservoir area, after Papaya river section, Lizhuang section to dam section, water quality becomes better, water quality in the dam area is best.(2) Basis to GB3838-2002" Surface Water Quality Standards", referring to eutrophication classification evaluation criteria, evaluated the degree of eutrophication of Songta Reservoir water, flood season, non-flood season and year-round water quality were all showed poor nutritional status. Put forward appropriate water protection measures, including measures such as pollution control, establishment of ecological engineering. Achieved objectives of full protection of Songta Reservoir’water quality.(3) Established a two-dimensional water quality simulation system of Songta reservoir. Achieved analysis and simulation of water quality, provided strong technical and management platform for enhance basin water environmental protection.(4) Based on experiences of water pollution control in domestic and international, according to the general idea and technology route, put forward water environment comprehensive management plan constituted by the pollution control, ecological technologies and management practices.(5) Proposed reform and improve management system of water environment, Strengthened sudden water pollution emergency response mechanism, contribute to sustainable water supply of Songta Reservoir, and transformation of the socio-economic development across the region.Eutrophication of water environment issues have become the focus of research in many fields, variety of methods cross, multi-subject integration will become development direction of the water planning study environmental systems. Inspired by many aspects in the process of research, recommended depth and improve in the following areas:appropriate to increase the frequency of monitoring sites and monitoring within the scope of the reservoir, timely and accurate grasp water quality change; In addition, on the premise of actual conditions permit, other items should be added to the wind, wind direction and so on, to make the simulation results of model more accurate, and to improve the reliability of the model. |
PDF Full Text Request