Analysis on the Status of the Characteristics and Distribution of Industrial Water Pollution in China

Based on the discharge standards of different industries, this paper determines the evaluation indexes of the status of water pollution in China. According to the discharge data of industrial water pollution of 31 provinces or regions in China, comparing some kinds of comprehensive evaluation methods used commonly for the status of water pollution, including the advantages and disadvantages, it adopts the improved entropy method to calculate the weighs of industrial water pollution. Then, it sorts the overall status of industrial water pollution, the status of heavy metal indexes and the status of composite indexes, and the status of industrial water pollution is divided into three categories, including high, medium and low. At last, based on classifying 31 provinces or regions, it analyzes the calculation and the sorting results.