[Objective] To evaluate and analyze the fluorine pollution degree and its spatial distribution characteristics of river water and sediment in the main and tributary channels of Yongqiangtang River and Zhongheng River that lie in Longwan industrial area in Wenzhou City

Zhejiang Province and to locate the serious water fluoride pollution river channel and pollution source

in order to provide scientific basis for the treatment of river water fluoride pollution.[Methods] On the basis of field sampling

ion selective electrode method

single factor pollution index method and correlation statistics method were used to measure the fluorine content

to evaluate the fluoride pollution degree

and to discuss the fluoride pollution sources.[Results] The exceeding standard rates of water fluorine content of sampling section on the main and tributary channels of Yongqiangtang River and Zhongheng River were 96% and 83.3%. The proportion of sampling sections on the main

east and west tributary channels of middle reaches of Yongqiangtang River

was 60%

85.7% and 80%

where the water fluoride pollution grades were evaluated as moderate and severe. The sampled section ratios that were determined as severe on the main and east tributary channel of Zhongheng River in industrial area were 80% and 75%. The sediment fluoride pollution grades of Yongqiangtang River and Zhongheng River were mild and less than mild. Water fluorine content and the number of stainless steel enterprises were closely correlated and about 71.4% of the sampled section ratios had their correlations over 0.9.[Conclusion] The treatment of fluoride-polluted industrial wastewater should be focused

the river water fluoride pollution remediation on the tributary channels of middle reaches of Yongqiangtang River

the main and east tributary channels of Zhongheng River in the industrial area should be carried out. On that precondition

the water environmental quality might be improved effectively.