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Abstract Based on the fuzzy comprehensive evaluation and cluster analysis method, the wastewater quality of a certain industrial park in Hebei province was evaluated. The water was sampled from five factories and one sewage treatment plant of centralization in the industrial park, the chemical oxygen demand (COD), ammonia nitrogen, pH, volatile phenol and total phosphorus (TP) of the water sample were tested as the evaluation data, the comprehensive membership degree of each monitoring index was determined and the water quality level were judged. The results show that the pollution of chemical industry park was serious, the half of the sample was under the pollutant control standard grade 3. The water quality of Z1、Z3 etc. was the same as inlet water in sewage treatment plant, all the six samples show that the industrial park wastewater was classified into two kinds.
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