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首页> 外文期刊>Environmental Science and Pollution Research >Water pollution characteristics and analysis of Chaohu Lake basin by using different assessment methods
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Water pollution characteristics and analysis of Chaohu Lake basin by using different assessment methods

机译：采用不同评估方法潮湖盆地水污染特征及分析

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In the context of the water environmental protection and local economic sustainable growth, it is of great importance to conduct a comprehensive water quality assessment in Chaohu Lake basin. In this study, dissolved oxygen (DO), permanganate index (COD_(Mn)), 5-day biochemical oxygen demand (BOD_5), ammonia nitrogen (NH_3-N), total nitrogen (TN), and total phosphorus (TP) were investigated monthly at 24 sampling sites in Chaohu Lake basin during 2015 to 2017. Five methods were used to evaluate water quality and identify dominant pollutants. Results showed that the dominant pollutants in Chaohu Lake were TN (4.17-11.61 mg L~(-1)) and TP (0.27-0.75 mg L~(-1)). The upstream of Chaohu Lake was influenced by Nanfei River, Shiwuli River, and Paihe River, and water quality of the upstream (eutrophic) was worse than that of the downstream (mesotrophic) part of Chaohu Lake. Comprehensive Water Quality Identification Index Method (CWQII) can better assess the water quality compared with the other methods by providing qualitative and quantitative analysis. The index values assessed by CWQII method for Nanfei River, Shiwuli River, and Paihe River were 5.819, 5.986, and 5.141, respectively, and water quality were all assessed as grade V. Overall, water quality of Chaohu Lake has been slightly improved during 2015-2017, but water quality of western inflowing rivers was still heavily polluted. These findings provide valuable information and guidance for water pollution control and water resource management in Chaohu Lake basin. Several feasible measures are proposed.
机译：在水环境保护和地方经济可持续增长的背景下，在巢湖盆地进行全面的水质评估，这是非常重视。在该研究中，溶解氧（DO），高锰酸盐指数（COD_（MN）），5天生物化学需氧量（BOD_5），氨氮（NH_3-N），总氮（TN）和总磷（TP）是在2015年至2017年期间在巢湖盆地的24个采样网站上调查了每月调查。使用五种方法来评估水质并确定主要污染物。结果表明，巢湖中的主导污染物是TN（4.17-11.61mg L〜（-1））和TP（0.27-0.75mg L〜（-1））。巢湖上游受南飞河，九鲁河和蔡河的影响，上游水质（富营养）的水质比巢湖湖的下游（脑养育）部分差。通过提供定性和定量分析，综合水质识别指数法（CWQII）可以更好地评估水质与其他方法相比。 CWQII法为南飞河，九鲁河和蔡河评估的指标值分别为5.819，5.986和5.141，水质全部评估为V级。总体而言，巢湖湖的水质在2015年略有改善-2017，但西部流量河流的水质仍然严重污染。这些调查结果为巢湖盆地的水污染控制和水资源管理提供了有价值的信息和指导。提出了几项可行措施。

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