Fuzzy synthetic evaluation for water quality assessment in Tang River

Due to the characteristics of uncertainties, randomness and fuzziness in Tang River near ocean environmental system, some traditional methods of assessing, such as uni-factor, comprehensive index and so on, are proved to assess water quality limitedly and untruly. According to the principle of fuzzy mathematics to establish the surface water environmental quality fuzzy synthetic evaluation model, which is not only easy but also fully embodies the calculation of its systematic and synthetic features. The result shows that fuzzy mathematics method applied to assess water quality in Tang River is reasonable and possible. The research offers a reference for environmental management and pollutant control in Tang River.