【摘要】 以沛县北部采煤塌陷区为研究对象，分析了丰水期和枯水期的水质指标，采用单因子评价法、综合污染指数法、分级评价法和综合水质标识指数法对水体进行综合评价。结果表明：丰水期和枯水期的水体综合水质标识指数均值分别为4.204和3.477,大部分为Ⅳ、Ⅴ类水质，夏季丰水期水体污染更为严重；受生活污水、工业废水和农业废水等污染源及气候特征的影响，塌陷区水体主要污染物为COD、TN和TP,最高浓度分别为64.71、3.320、0.640 mg/L,劣于Ⅴ类标准。更多还原

【Abstract】 Taking a coal mining subsidence area in northern Peixian County as the research object, the water quality indexes during the wet and dry seasons were analyzed. The water body was comprehensively evaluated by single factor evaluation method, comprehensive pollution index method, graded evaluation method and comprehensive water quality identification index method. The results show that the average values of comprehensive water quality identification indexes during the wet and dry seasons are 4.204 and 3.477,respectively. In most periods, the water body meets the Class IV and V standards. The water pollution is more serious in the summer wet season. Due to climatic characteristics and pollution sources such as domestic sewage, industrial wastewater and agricultural wastewater, the main pollutants in the water body of the subsidence area are COD,TN and TP,with the maximum concentrations of 64.71,3.320 and 0.640 mg/L,respectively, which are inferior to the Class V standard.更多还原