Evaluation of Water Environmental Quality in a Shallow Urban Lake
Evaluation of Water Environmental Quality in a Shallow Urban Lake
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发表时间：
2014
影响因子：
11.4
通讯作者：
L. Simi
中科院分区：
文献类型：
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作者：
L. Simi
以邯郸市南湖为例，采用单因子评价法、综合污染指数法和营养盐指数法，对平均水深仅1.3m的典型浅水城市湖泊水质状况进行了评价。根据2013年4 ~ 10月对太湖全境11个采样点的水质监测及水质分析数据，按照国家标准《地表水环境质量标准》（GB 3838 -2002）进行评价。结果表明，南湖水体中氮、磷是主要的污染因子，各监测点的监测数据均显示，南湖水体中总氮和总磷的浓度均超过了GB 3838 -2002中的Ⅴ类限值。根据现场调查，生活污水、工业废水排放和垃圾向湖岸倾倒是造成水体污染的主要来源，污染指数分别为3.0和2.2。综合营养盐指数评价结果表明，太湖总体上仍处于轻度富营养化水平，而在靠近污染源的地方，富营养化程度加重，达到中度富营养化水平。
South Lake in Handan City,typical of shallow urban lake with only 1.3m water depth on the average,was studied in this paper for evaluating the status of water quality by methods of single-factor appraisal,comprehensive pollution index and nutrient index. With the water quality monitoring involving 11 sampling sites all over the Lake which began from April to October 2013,and the analytic data of water quality,the evaluation was carried out in accordance with the related national standard Environmental Quality Standard for Surface Water(GB3838-2002). Results showed that nitrogen and phosphorus were the main pollution factors to be controlled in South Lake as all the data from the monitoring sites indicated concentrations of both TN and TP exceeded the limits of ClassⅤ in GB3838-2002. According to the field survey,emissions of domestic sewage and industrial wastewater and the dumping of garbage on the lake-shore were the main sources causing water pollution, with the pollution indexes being 3.0 and 2.2 respectively. The appraisal based on comprehensive nutrient indexes showed that the Lake,as a whole,still remained at the slight eutrophication level,while in the places close to pollution sources the situation was aggravated to median level.