基于层次分析法的水源地上游农村生活污水处理技术综合性能评价

通过分析影响农村生活污水处理技术综合性能的相关因素,应用层次分析法(AHP)建立了包含1个目标层、3个准则层和12项指标的水源地上游农村生活污水处理技术综合性能评价指标体系,并确定了各指标权重。对水源地上游8类农村生活污水处理技术性能进行综合评价的结果表明,采用组合工艺的处理技术综合性能优于采用单项工艺的技术;小型一体化污水处理装置、土地处理系统、小型人工湿地的综合性能优于生物接触氧化池、净化沼气池和稳定塘。生物+生态组合工艺处理技术比较适合于水源地上游农村生活污水处理应用。针对特定地区,可参考基于层次分析法的技术综合性能评价结果,并综合考虑当地自然、经济和社会条件等因素,因地制宜选择先进适用的农村生活污水处理技术。

Comprehensive Performance Evaluation of Rural Domestic Sewage Treatment Techniques Applied in the Upstream of Water Source Area Based on AHP

In order to analyze the factors controlling the comprehensive performance of the rural domestic sewage treatment techniques applied in the upstream of the water source area,a comprehensive evaluation index system composed of one objective hierarchy,three criterion hierarchy,and twelve indexes was established based on the Analytic Hierarchy Process(AHP) and the weights of each index were determined.The results of the comprehensive evaluation of eight rural domestic sewage treatment techniques applied in the upstream of the water source area showed that the group of combined-process techniques outperformed the group of single-process techniques.Among several single-process techniques,the small-sized integrated sewage treatment instrument,land treatment technique,and small constructed wetlands outperformed the bio-contact oxidation process,purified biogas digesters,and stabilization pond process.The combined techniques of bio-ecological process were suitable for the treatment of rural domestic sewage in the upstream of the water source area.As for the specific area,the results of the comprehensive performance evaluation of various treatment techniques and the synthetic analysis of natural,social,and economic conditions in the area were used to provide the technical option and decision making of the rural domestic sewage treatment.