Research on comprehensive evaluation model of rural domestic sewage treatment technology based on fuzzy comprehensive evaluation and analytic hierarchy process method

Abstract

In China, rural domestic sewage treatment has become an urgent problem to be solved to improve the rural human settlement environment. However, there is no scientific, objective, and systematic evaluation model for selecting rural domestic sewage treatment technology. Therefore, this paper mainly studies on the establishment of the evaluation system model for China's typical rural domestic sewage treatment technology and the application of technology selection. Based on the analytic hierarchy process and the life cycle method, the experts consulted and analyzed the factors affecting the evaluation of China's rural sewage treatment technology. The comprehensive evaluation index system suitable for China's rural sewage treatment technology was established based on the analysis results. Combined with the fuzzy comprehensive evaluation method, five typical rural domestic sewage treatment technologies were applied and analyzed. The results show that the comprehensive evaluation of the biofilm technology is best at 3.5669, followed by the septic tank treatment technology and land treatment technology, which are 2.8829 and 2.8422, respectively. The case analysis verifies the applicability of the model, which can support the selection of technologies for the rural domestic sewage treatment market in China. Highlights Summarizes the water ecological environment in rural China.; Summarizes the application of rural sewage treatment technology in China.; Propose a model for rural domestic sewage treatment technology.; Select typical technology for empirical analysis.; Based on the analysis results, put forward constructive opinions on the status of rural sewage treatment technology in China.;

Keywords

• analytic hierarchy process
• fuzzy comprehensive evaluation
• life cycle assessment
• rural domestic sewage treatment technology