摘要
根据2016年南京市污水处理厂进出水量、水质资料和自来水用水量情况,分析出鼓楼区现状污染物入河量。通过构建一维稳态水环境数学模型,构建了污染源——水质的响应关系,对现状污染物入河量进行了验证,在基于外秦淮河三汊河口断面和金川河宝塔桥断面水质达标的情况下,计算得到鼓楼区水环境容量COD为21 798t/a,氨氮为733.24 t/a,总磷为61.30 t/a。结合鼓楼区实际情况,从排水达标区建设、黑臭河道整治、污水处理厂提标改造、引补水等方面提出两个断面达标的可行性措施,为环保部门进一步改善鼓楼区水环境提供了理论支撑。
According to the inflow and outflow,water quality data of Nanjing Sewage Treatment Plant and tap water consumption in 2016,the current situation of pollutants into the Yangtze river in Gulou District was analyzed. By constructing a one-dimensional steady-state water environment mathematical model,the relationship between pollution source and water quality was established,and the amount of pollutants into the river was verified. Under the condition that the water quality of the section of Sanchahekou at the Qinhuai River and the section of Pagoda Bridge at Jinchuan River has reached the standard,the water environmental capacity in the Gulou district is calculated. The results show that the water environmental capacity of COD is 21,798 t/a,NH3—N is 733. 24 t/a and TP is 61. 30 t/a. Combined with the actual situation in Gulou District,this paper puts forward two feasible measures to meet the requirements of two sections in terms of construction of drainage standard areas,treatment of black-odor river courses,upgrading of sewage treatment plants,and introduction of supplemental water,so as to provide a theory for environmental protection departments to further improve the water environment in Gulou District.
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