Research on sustainable development strategy and evaluation model of the of urban wastewater treatment system in China

In this paper, based on the literature review and research to the large numbers of available data, the status in quo about the urban wastewater treatment technology in china was summarized and analyzed from the points of view of sustainable development for environment, technique and economy. According to the principles of the screening of sustainable development, an sustainable development system model of urban wastewater treatment was presented in this paper, some sustainable treatment strategies was discussed in four stages- source control, wastewater transportation system, wastewater treatment and reclaimed wastewater reused. Finally, an index system for the assessment of sustainability for urban drainage system is built up and a fuzzy synthetical assessment model was built as the assessment method.