基于国考七桥瓮断面水质达标秦淮河流域水环境容量计算

发布时间：2018-06-26 21:36

本文选题：控制单元与控制断面 + 调水期与非调水期　；参考：《中国农村水利水电》2017年10期

【摘要】：综合考虑水文、水质、污染源等因素,对影响秦淮河流域七桥瓮断面水质的污染源区域划分了控制单元。建立研究的影响区域水环境数学模型,并根据最不利水文条件(典型枯水年)和边界水质,建立了考核断面水质与概化排口污染源响应关系,通过响应关系从而计算出控制断面水质达标时各个概化排口所允许的排污量,从而得到本控制单元的水环境容量。结论表明:为了保证国家考核断面七桥瓮控制断面的水质达标,在近期(2017-2019年)七桥瓮污染物控制单元内COD水环境容量为24 536 t/a,氨氮水环境容量为2 132 t/a,总磷水环境容量为173.7 t/a,需要调水30 m~3/s;在远期(2020年以后)七桥瓮污染物控制单元内COD水环境容量为24 536 t/a,氨氮水环境容量为609 t/a,总磷水环境容量为49.6 t/a,无需调水。
[Abstract]:Considering the factors of hydrology, water quality and pollution source, the pollution source area which affects the water quality of Qiqiao urn section in Qinhuai River basin is divided into control units. According to the most unfavorable hydrological conditions (typical dry year) and the boundary water quality, the response relationship between the water quality of the section and the pollution source of the general outlet was established. According to the response relation, the allowable discharge quantity of each general discharge port when the water quality of the control section is up to standard is calculated, and the water environmental capacity of the control unit is obtained. The conclusion shows that in order to ensure that the water quality of the control section of the seven-bridge urn is up to standard, In the near future (2017-2019), the environmental capacity of COD in the pollution control unit of Qiqiao urn is 24 536 t / a, the environmental capacity of ammonia nitrogen water is 2 132 t / a, the environmental capacity of total phosphorus water is 173.7 t / a, and the amount of water needed to be transferred is 30 mt / 3 / s. The environmental capacity of COD, ammonia and phosphorus is 24,536 t / a, 609 t / a and 49.6 t / a respectively.
【作者单位】：河海大学浅水湖泊综合治理与资源开发教育部重点实验室;河海大学环境学院;河海大学水文水资源学院;
【基金】：江苏高校优势学科建设工程资助项目水体污染控制与治理科技重大专项(2014ZX07405-002)联合资助
【分类号】：X26;X52

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