Comprehensive Assesment Of Disposal Method Of Sludge In Wastewater Treatment Plant

This paper, based on analysis of the domestic and international current situation for sewage sludge disposal and the exsisting problem about China's sewage sludge disposal, illuminate the importance of comprehensive evaluation on sewage sludge disposal means.Through the analysis and comparison of comprehensive evaluation of commonly used theories and methods , the AHP-fuzzy comprehensive evaluation method was presented as a comprehensive evaluation method of sewage sludge disposal means, discussing concrete steps in detail "application of level analysis to determine the index weight" and "application of fuzzy comprehensive evaluation of comprehensive evaluation method".From four aspects of economic, technology, environment, resource utilization, analyzing the various factors chosen which impace on sewage sludge disposal means,based on the analysis of the characteristics of sludge resources at home and abroad and related fields of evaluation system and patterns,constucting more comprehensive evaluation index of sewage sludge disposal system, and establishing the AHP-fuzzy comprehensive evaluation model of sewage sludge disposal means. Analyzing the indicator system, and establishing column data for programs of each index.According to the established index system, using AHP-fuzzy comprehensive evaluation model for data integration, and calculating the comprehensive evaluation value of funded programs , based on evaluation of the value of high and low ,listing the order of priority for sewage sludge disposal means: the use of sewage sludge land> the use of material > sanitary landfill>sludge incineration.In this paper, optimization model for the AHP-Fuzzy Comprehensive Evaluation Method of sewage sludge disposal means was established, and have a certain reference effect on the choice of sewage sludge disposal means, and have positive significance on the guidance of the construction of China's sewage sludge disposal means.