Study On Comprehensive Benefit Evaluation Of University Campus Decentralized Sewage Treatment And Reuse Engineering

Decentralized sewage treatment as a useful complement to the urban centralized sewage treatment, can effectively achieve university campus sewage "zero emissions"in urban and rural transition belt. However, some university decision makers only understand the environmental benefits of sewage treatment engineering. Coupled with the investment amount, the university would never initiative to construction sewage treatment engineering in the absence of intervention of the Government and the Environmental Protection Department. How to change the one-sided understanding of university decision makers for decentralized sewage treatment engineering benefits, is a worth studying and discussing important issues to promote the expansion in university campus in the further.Based on this objective, this paper study and evaluate the comprehensive benefit of decentralized sewage treatment and reuse engineering. Firstly, the sustainable development and the circulation economic theory as a university campus construction sewage treatment and reuse engineering theory support in this paper, and conclude that sewage treatment and reuse is one of the important ways to alleviate our country's water crisis. Use the concept of decentralized sewage treatment, scope, advantages and technology as the technical support of university campus construction sewage treatment and reuse engineering. Secondly, it uses the theory of costs benefit and comprehensive benefit evaluation as theory foundation, analyzes the connotation and characteristics of comprehensive benefits came, and conclude that its comprehensive benefit covers economic, and social and environment benefit three aspects. Through quantitative research of economic benefit, it finds that economic benefits comparison considerable can achieve save tap water fee, and save sewage processing fee and get education benefit. Through selected 10 indicators, has study the social and environmental benefits of sewage treatment engineering. Thirdly, based on the analysis of comprehensive benefits, it constructs comprehensive benefit evaluation index system, and chooses analytic hierarchy process and expert consultation table to calculate the weighting of evaluation index. After determination the weight coefficient, this paper establishes the fuzzy comprehensive evaluation model of the university campus distributed sewage treatment and reuse engineering comprehensive benefit.Finally, this paper take a university campus in Xi ' an as the empirical analysis example. Through understanding the general situation of sewage treatment engineering in this university, it uses comprehensive benefits evaluation getting the conclusion that its comprehensive benefit is significant. And this paper puts forward to a series of security measures in order to realize comprehensive benefit policy from the investment and financing, operation and management mode and policy.