2012—2014年蛮河中上游水体污染时空变化研究

Study on the Spatial and Temporal Changes of Water Pollution in the Upper and Middle Reaches of the Manhe River during 2012-2014

通过2012—2014年蛮河朱市断面和孔湾断面水质监测结果的聚类分析,探讨了蛮河流域河流污染时空变化的原因和特点。结果表明,蛮河水质总体呈好转趋势,但污染仍比较严重,主要污染指标为总磷、CODCr、BOD5及阴离子表面活性剂等。2个监测断面的总磷污染都最为严重,达到V类以上,各污染指标均表现出明显的季节波动。上游朱市断面水质状况要好于中游孔湾断面,主要是由两地的工农业结构和规模上的差异导致。

Based on the clustering analysis of the water quality monitoring results of the Manhe river at the Zhushi section and Kongwan section during 2012-2014,the causes and characteristics of the temporal and spatial changes of Manhe River pollution in the river basin were discussed.The results showed that the water quality of Manhe River was improved,but the pollution was still serious. The main pollution indicators for the total phosphorus,CODCr,BOD5 and anionic surfactants. The total phosphorus pollution of the two monitoring sections was the most serious,reaching more than V class. The diagrams of pollution indicators have shown a significant seasonal fluctuations. The water quality of Zhushi section in the upper reach was better than that of the Kongwan section in the middle reach,mainly due to the differences in the structure and scale of the industrial and agricultural industries.