熵权法在煤矿区地表水环境质量评价中的应用.pdf

124 Anhui Agri Sci Bull 2021 27 12
（ ） ）
In order to study the environmental quality of surface water in coal mining affected area, this paper takes
Abstract：
five collapse ponds 1#, 2#, 3#, 4#, 5# in Luling mining area and Tuohe river flowing through the mining area as
（ ）
the research object, selects ammonia nitrogen, total nitrogen, total phosphorus, chemical oxygen demand, fluoride, ni-
trate, sulfate as evaluation indexes, and uses entropy weight method to evaluate the water environmental quality of
surface water in the mining results show that Tuohe River class IV water accounts for 100%; the water
：
quality of collapse pond is the best, which can be used as domestic water; the water quality of No. 2 collapse
pond is the worst, with three water samples exceeding class V standard; and collapse pond is class IV wa-
ter, and collapse pond is class V speaking, the water quality of Tuohe River in flowing state is
better than that of collapse pond in still water environment.
Entropy weight method; surface water; Environmental quality assessment; Luling