珠江三角洲重点整治河涌污染特征研究

The Pearl River Delta Key Regulation Chung River Pollution Characteristics Research

以省政府重点整治河涌—西南涌水质情况做调查,布设3个监测断面。监测分析COD、DO、氨氮、氟化物等10个污染指标,采用单因子指数法和污染倍数法评价西南涌的污染程度。结果表明,西南涌主要污染物TP、TN和CODMn浓度均值超过《地表水环境质量标准》的V类标准,属于劣V类水体。支涌工、农业和生活污染物的排入,是造成西南涌水体污染的主要原因。因此,要解决西南涌的污染问题,首要解决的是支涌污染物排入西南涌的问题。

It was arranged three monitoring sections to monitor water quality of the Southwest River which is focused on the flow regulation by the provincial government. Ten pollution indexes were monitored, such as chemical oxygen demand （COD）, dissolved oxygen （DO）, ammonia nitrogen, and fluoride. Single factor pollution index method and pollution factor method were used to evaluate the pollution levels of the Southwest River. The results show that the main pollutant concentration including TP, TN and CODMn of the Southwest River exceeded the V class standard of the Environmental Quality Standard for Surface Water, which belongs to the bad V kind of water. Pollutants of industry, agriculture and life discharged by branch is the main factor which cause water pollution of the Southwest River .If want to solve the pollution problem of the Southwest River, we should solve the problem of pollutants discharged by branch at first.