The Fuzzy Evaluation of Surface Water Quality in LiuJiazhuang of QingZhang River

Basing on the monitoring data of water quality of LiuJiazhuang section and the analysis results of 4 years, applying fuzzy comprehensive evaluation model, according to LtEnvironmental quality standard for surface waterGt to establish the relevant subjection functions, the quality evaluation of surface water in LiuJiazhuang section is made in this paper. The result shows that the change about the water quality in LiuJiazhuang is not obvious, which belongs to the II grade and III grade water standard, and the conditions of water quality are better. At the same time we should take effective monitoring measures of water quality and methods, set up and improve the water quality monitoring networks for the regular routine monitoring and emergency monitoring, adopt a good way in the rational utilization of water resources, protect the health of people, seek the sustainable development of society, economy, and environment, and make use of water resources and water environment forever.