Study On Calculation And Treatment Of Typical Rural Sewage Of Three Gorges Reservoir Region

After the impoundment of Three Gorges Reservoir, the pollutants in the natural degradation capacity of the reservoir in the lower, leading to the reservoir area of the reservoir along the sewage water pollution in rural areas the threat of larger; also results in over-water flow cross-section area increases, the flow slows, reduced self-purification capacity of water, reservoir water bloom of the increased risk.In this paper, investigation, analysis Three Gorges reservoir characteristics of a typical rural water and discharge characteristics, based on the research use of idle land in rural areas, according to the natural reservoir of the terrain, to pure natural, low consumption of water purification methods, for Chongqing Zhong County town of New Deal Shibao Village, the existing topography of a rural settlement, according to the local economy and the characteristics of the rural scattered, design and construction of wetlands and stabilization ponds in series of water purification systems, rural production and living in the area generated during wastewater treatment. After nine months of investigation and experimental research, the following results and conclusions:(1) Nowadays,of the reservoir area of rural water supply and drainage infrastructure below normal, water penetration is low, drainage is not perfect. Survey of rural household per capita water consumption is only 65.8L/d, is the "outdoor water supply design specification" (GBS0013-2006) in the relevant provisions of the values of 0.47 to 0.66 times. Maximum daily water consumption of rural residents in the reservoir area and the ratio of the minimum daily water demand of about 1.90, variation coefficient of water, wastewater treatment facilities designed to increase the uncertainty.(2) According to the survey water quality, water conditions and neighborhood population,calculate the New Deal settlement in a rural village of pollution load. Use of the steep terrain characteristics of settlements, according to the surrounding land use, construction of drainage ditches, the sewage in the gravity natural convergence to HRT as the main parameters, design technology is mature, easy management, low energy consumption, and the surrounding coordination environment of wetlands, ponds combined process of purification of sewage.(3) wetlands, stabilization pond residents of the village combined process of sewage purification effect of the New Deal Statistical analysis showed that: the entire system CODcr, NH4+-N, TN, TP removal rates were 84%, 74%, 64%, 83 %. In the wetlands, pond systems up and running stage, the water indicators are up, "sewage discharge standard" (GB18918 - 2002) in an A standard.Deal of the test based on the existing village watershed topography, with scattered, according to the local economy and rural characteristics, and explore a complete program to improve rural environmental pollution, combined with the status quo analysis of the reservoir area, wetland, pond system has good promotional value, The trial for the mitigation of reservoir facing increasingly serious environmental problems of great significance.