九江市甘棠湖等五个湖泊水质现状及治理对策

The Present Situation of Water Quality of Five Lakes(e.g. Gantang Lake) in Jiujiang and Countermeasure of Pollution Control

为掌握九江市湖泊水质现状,以甘棠湖、八里湖等5个湖泊为研究对象,对其水体中CODMn、NH3-N、TN和TP四项参数进行了监测。结果表明,九江市五个湖泊TN和TP达标率明显偏低,分别为30%和25%,说明TN和TP是影响辖区湖泊水质的关键因子。从地域上看,西部湖泊(赛城湖)的水质要好于东部湖泊(八里湖、甘棠湖、南门湖和白水湖)。针对九江市湖泊目前存在的水系不同、水产养殖污染、截污不到位、管网错接等水环境问题,结合实际情况,提出大力整治农业面源污染、完善城市污水收集及处理系统和积极推进湖泊生态工程修复工程等治理对策。

In order to master the current situation of lake water quality in Jiujiang, the four parameters including CODMn, NH3-N, TN and TP were monitored in water of five lakes such as Gantang lake and Bali Lake. The results show that the compliance rates of TN and TP in five lakes in Jiujiang are obviously low, 30 %and 25 % respectively, indicating that TN and TP are the key factors affecting the water quality. Geographically, the water quality of Western Lakes(Saicheng Lake)is better than that of Eastern Lakes(Bali lake, Gantang lake, Nanmen lake and Baishui Lake). According to the current water environment problems of lakes in Jiujiang, such as different water systems, aquaculture pollution, inadequate sewage interception and wrong connection of pipe networks, combined with the actual situation, some countermeasure of pollution control are taken, such as vigorously regulating agricultural non-point source pollution, improving urban sewage collection and treatment system and actively promoting lake ecological engineering restoration project.