Process Optimization And Design Of Sewage Treatment Plant Of Fuxintown

The Ministry of housing and urban development about "pointed out that the 12th Five Year Plan" national town drainage management planning, from 2010 to 2040, about 30 years, China's 90% villages to gradually establish a relatively perfect drainage collection and sewage treatment facilities. To 2020, Key protection area of village sewage pollution problems will be effectively controlled, and about 30% of the rural population can get public drainage services relatively perfect. At the same time, the county and incorporated into the pollution source census category of the towns sewage treatment plant construction in the "Twelfth Five Year Plan" period, the public infrastructure construction of small towns in China to promote the all-round. Therefore, to explore suitable for selection and optimization of process plant for treatment of small town sewage treatment has become the necessary premise of factory building sewage treatment in small towns.Subject to the governance project of sewage Fuxin town based on the research, the main research contents include Fuxin town sewage treatment plant water quality analysis and determination, selection of process scheme analysis and optimization of the design parameters.According to the development planning of Fuxin town demand, forecasts of the region to the water, respectively, using population comprehensive water consumption index and classification water indexes of two kinds of methods. After analysis and comparison, the final determination of Fu town sewage treatment plant design capacity of 15000 m3/d. A simple prediction of the sewage treatment plant influent water quality, and combining the already built similar scale town sewage treatment plant influent quality, ultimately determine Fu town sewage treatment plant influent quality as BOD5=180mg/L, CODCr=500mg/L, SS=200mg/L, NH3-N=35mg/L, TP=5mg/L. According to the Fuxin town sewage treatment plant effluent Zhao Daba river, Zhao Daba River in Daling River and the Liaohe River Basin, considering the comprehensive management of water environment regions within a river basin, and water can be used as water for production of industrial enterprises, eventually determine Fuxin town sewage treatment plant effluent water quality should meet the "urban sewage treatment plant pollutant discharge standard" (GB18918-2002) a A emission standards, namely:BOD5?10mg/L, CODcr ?50mg/L, SS?10mg/L, NH3-N?5mg/L, TP?0.5mg/L.According to the actual situation and the sewage treatment plant design requirements Fuxin town local, according to Fuxin town sewage treatment plant sewage treatment process level analysis and comparison analysis to the technology of sludge treatment, the final "A/O+ diatomite strengthening process"+UV disinfection system+mechanical dewatering of sludge into the town of Fuxin sewage treatment plant the main process scheme. And based on this method, the calculation of optimization of the design parameters and design of each monomer structure. To strengthen the core A/O+diatomite sewage treatment, ultraviolet disinfection system for disinfection of water, can make Fuxin town sewage treatment plant effluent quality to achieve "urban sewage treatment plant pollutant discharge standard" (GB18918-2002) level of A emission standard, which meets the requirement of design of the plant. At the same time, provides the reference for the other similar small town sewage treatment plant design.sis to the technology of sludge treatment, the final "A/O+ diatomite strengthening process"+UV disinfection system+ mechanical dewatering of sludge into the town of Fuxin sewage treatment plant the main process scheme. And based on this method, the calculation of optimization of the design parameters and design of each monomer structure. To strengthen the core A/O+diatomite sewage treatment, ultraviolet disinfection system for disinfection of water, can make Fuxin town sewage treatment plant effluent quality to achieve "urban sewage treatment plant pollutant discharge standard" (GB18918-2002) level of A emission standard, which meets the requirement of design of the plant. At the same time, provides the reference for the other similar small town sewage treatment plant design.