Computer simulation of fuzzy comprehensive evaluation and its application in water quality evaluation

The water quality assessment is an important basis for implementing water pollution control planning. In this paper, we use fuzzy comprehensive evaluation method to build a mathematical model of the Yangtze River Water Quality Assessment. Finally we find the method to solve the water pollution situation of the Yangtze River by comprehensive evaluation. We seek the model solving by computer simulation.The key problems are focused on the following two issues: (1) Making a comprehensive quantitative evaluation of Yangtze River water quality in the past two years and analyzing the water pollution situation in various regions. (2) Researching, analysing the permanganate index of major pollutants over the Yangtze River for nearly a year and ammonia nitrogen source is mainly in what areas.