嫩江齐齐哈尔市江段水环境优化管理方案

OPTIMAL MANAGEMENT SCHEMES OF NENJIANG RIVER WATER ENVIRONMENT IN THE SECTION OF QIQIHAER CITY

对研究区地表水环境质量现状分析及预测的基础上,引入响应系数和最优化理论,以各断面水环境功能标准和各排污口排放标准为约束条件,建立了水环境优化管理模型,最后提出有利于当地经济和水环境可持续发展的优化管理方案:方案一为现状优化管理方案,按此方案各断面均能达到其相应的水环境功能标准,要求红光糖厂、斯达造纸厂和氧化塘COD处理后浓度分别为1500mg/L、900mg/L和200mg/L,其它排污口维持原排放浓度;方案二为"下个五年"优化管理方案,按此方案各排污口均能达到其相应的排放标准,要求红光糖厂及斯达造纸厂的COD和BOD5处理后浓度分别为100mg/L和30mg/L。北市区生活污水COD和BOD5处理后浓度分别为150mg/L和60mg/L,氧化塘COD处理后浓度为150mg/L,其他排污口维持原排放浓度。

Based on the analysis and prediction of Nenjiang river water environmental quality in the study area, the water management model is developed by introducing response coefficient and optimal theory, and subjecting to the standards of water environmental function in different river sections and discharge standards of the wastewater in different discharge points. Finally, the optimal management schemes, favorable to the sustainable developments of the local economics and river water environment, have been worked out: the first scheme is the optimal management one at present, in which the standards of the water environmental functions regulated will be met in different sections, and COD is required to be treated to 1 500 mg/L for Hongguang sugar factory, 900 mg/L for Sida paper factory, 200 mg/L in wastewater lagoon, and original concentrations will remain in the rest of the other discharge points. The second scheme is the optimal management one in next five-year plan, in which the standards of the wastewater discharge will be met in the different discharge points, COD and BOD5 are required to be treated to 100 mg/L and 30 mg/L for Hongguang sugar factory and in Sida paper factory, respectively; 150 mg/L and 60 mg/L for the domestic sewage of northern urban district, respectively; COD of 150 mg/L in the wastewater lagoon, and original concentrations will remain in the rest of the other discharge points.