太滆运河流域水环境污染解析

An Analysis of Water Environmental Pollution in the Taige Canal Watershed

采用源解析法对工业污染点源和生活污染、水产养殖污染、种植业污染、畜禽养殖污染、干湿沉降等非点源污染进行分析,统计分析了太滆运河全线常规监测断面丰水期、平水期和枯水期的水质现状、客水水质及主要支浜水质现状。结果表明,生活污染源是太滆运河流域各污染物的主要来源;太滆运河及周围河网以氮磷污染为主;两岸河浜的汇水使太滆运河水质下降;武宜运河与太滆运河交汇后,高锰酸盐指数与总磷污染均有好转,其中总磷由Ⅴ类转为Ⅳ类;锡溧漕河与太滆运河交汇后,使其污染更为严重,总磷由原来的Ⅳ类转为劣Ⅴ类,随后虽稍有好转,但入太湖前一直处于Ⅳ类水质状态。

The point sources of industrial pollution and the non-point sources of domestic pollution, aquaculture pollution, livestock pollution, planting pollution, and dry and wet deposition pollution are analyzed by source apportionment; the water quality of highflow period, mean flow period and low flow period of routine monitoring section of Taige Canal, inflow water, and the main basin is also analyzed by statistics. The result shows that domestic pollution is the main source of all the pollutant of Taige Canal. The nitrogen and phosphorus pollution dominates the Taige Canal and nearby rivers. The basin of the two sides of the Taige Canal coming into it caused the deterioration of water quality; When the Wuyi Canal intersected into Taige Canal, the permanganate index and total phosphorus pollution has improved and the total phosphorus pollution is from class V to class Ⅳ. When the Xilicao River intersects into Taige Canal, the total phosphorus pollution is from class Ⅳ to inferior to class V. Subsequently, the water quality improves slightly, but it keeps on the state of the class Ⅳ before it comes into Taihu Lake.