Construction Planning For The Town-level Sewerage Treatment Projects In Xiaoqing River Basin

In order to control the pollution in Xiaoqing River Basin and ensure the water quality of Shandong Provincial Jiaodong Water Transmission Trunk Line Project, with the guidance of the theory for water pollution control planning, in accordance with the strategies for control, utilization, and protection of the water basin, this thesis focuses on the pollution control in the socio-economic development, adopts a method of comprehensive prevention and control for water pollution areas, and puts forward the engineering scenarios and implementation suggestions on the town-level water pollution control in Xiaoqing River Basin.This thesis investigates and analyzes the relevant data of the towns in Xiaoqing River Basin, including natural environment, socio-economy, sewerage discharge, and pollution control status. At present, the water body of Xiaoqing River Basin has been seriously polluted. The pollutants mainly come from the urban industrial production and livings of residents. Therefore, the key to water pollution control is the urban sewerage control.In accordance with the natural increase rate of population and the trend for Shandong provincial urbanization development in the next several decades, this thesis forecasts the population with water supply in the various towns; in accordance with the present status of water supply and sewerage discharge, it confirms the standard for per capita sewerage generation; in accordance with the operation status of the existing sewerage treatment plants in Shandong province and the experience of the similar towns in China, it formulates the COD concentration of inlet sewerage and forecasts the served population of water supply, volumes of water supply and sewerage generation, and the total discharge of water pollutants at the various planning years for the towns in the basin; in accordance with the theory of gross control, it defines the reduction level of the water pollutants at the various planning years; in accordance with the socio-economic development level of the towns in the basin and the provincial construction practice of the sewerage treatment plants, and the principles for combination of advanced techniques and high-efficient economy, it puts forward the construction plan and feasible technological process for sewerage treatment plants in the various cities, counties, and major towns.Finally, it concludes by 2005 that the total sewerage treatment capacity of the cities and counties in Xiaoqing River Basin should be newly increased with 770,000m3/d, with an investment of RMB 1.19 billion Yuan; the total sewerage treatment capacity of the major towns should be increased with 80,000m3/d, with an investment of RMB 144 million Yuan; the reuse of recycled water should be increased with 50,000 m3/d, with an investment of RMB 30 million Yuan. After the completion, the capacity for COD reduction will rise at 223,200 Ton/year. In theory, it will just meet the actual demand for COD reduction. By 2010, the total sewerage treatment capacity of the cities and counties should be increased with 230,000m3/d, with an investment of RMB 414 million Yuan; the total sewerage treatment capacity of the major towns should be increased with 180,000m3/d, with an investment of RMB 324 million Yuan; the reuse of recycled water should be increased with 340,000 m3/d, with an investment of RMB 204 million Yuan. After the completion, the capacity for COD reduction will rise at 279,200 Ton/year. By 2015, the total sewerage treatment capacity of the cities and counties should be increased with 550,000m3/d, with an investment of RMB 990 million Yuan; the total sewerage treatment capacity of the major towns should be increased with 240,000m3/d, with an investment of RMB 432 million Yuan; the reuse of recycled water should be increased with 330,000 m3/d, with an investment of RMB 198 million Yuan. After the completion, the capacity for COD reduction will rise at 380,600 Ton/year.