Selection Of Rural Domestic Sewage Treatment Mode And Technology In Jining

The problem of rural sewage has not been paid enough attention for a long time and has become an urgent problem to be solved in the field of ecological environment.Rural domestic sewage treatment is an important link in the construction of new countryside,a prerequisite guarantee to improve the quality of farmers’ lives,and an important measure to implement the strategy of rural revitalization.Through the investigation of the current situation of rural domestic sewage treatment,as well as the study on the selection of Jining rural domestic sewage treatment modes and treatment technologies,this paper draws the following conclusions:(1)The main treatment modes of rural domestic sewage in Jining are as follows:municipal management treatment mode,local utilization mode of decentralized treatment,centralized treatment mode of village sewage treatment station,centralized treatment mode of decentralized collection and transportation.Taking Rencheng District as an example,it is concluded that the rural domestic sewage treatment in Rencheng District is suitable for the centralized treatment mode of village level sewage treatment station and municipal pipe treatment mode,while some villages with scattered distribution and small population are suitable for the decentralized treatment and local utilization mode.(2)lining’s rural domestic sewage treatment technologies mainly include:AAO method,SBR method,biological contact oxidation method,biological turntable,MBR technology,etc.Based on the analysis of the characteristics and application of the main treatment technology of rural domestic sewage in Jining City,combined with the comprehensive evaluation of analytic hierarchy method and expert scoring method,the final conclusion is that the total score of AAO technology is 0.791091 is significantly higher than that of other technologies,and the comprehensive advantages of AAO technology in all aspects are obvious,which is the most suitable domestic sewage treatment technology for Jining City.The overall scores of MBR technology,biological contact oxidation technology and SBR technology are:0.57176,0.573155 and 0.512084,and the comprehensive performance of the three technologies is not much different.The total score of biological turntable technology is 0.366779,which is not suitable for domestic sewage treatment technology in rural areas of Jining City.According to the score of the overall score,the selection priority order of Jining rural domestic sewage treatment technology is:AAO method>biological basic oxidation technology>MBR>SBR method>biological turntable.(3)Jining rural domestic sewage work is a long-term and arduous task,so after the determination of the treatment technology of rural domestic sewage,it is also necessary to ensure the long-term and stable operation of sewage treatment facilities by strengthening organizational leadership,ensuring project financing,standardizing project construction,strengthening technical support,innovative policy support,and advocating active rural participation,so as to achieve the long-term treatment of rural domestic sewage in Jining City.