基于线性规划的大连湾海域环境容量分析  

Marine environmental capacity analysisin Dalian Bay based on linear programming

作　　者：谭馨 项学敏[1] 高范[2] 环久峰 安津诺 TAN Xin;XIANG Xuemin;GAO Fan;HUAN Jiufeng;AN Jinnuo(School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China;National Marine Environmental Monitoring Center,Dalian 116023,China;Dalian Municipal Bureau of Ecological Environment,Dalian 116007,China)

机构地区：[1]大连理工大学环境学院,辽宁大连116024 [2]国家海洋环境监测中心,辽宁大连116023 [3]大连市生态环境局,辽宁大连116007

出　　处：《大连理工大学学报》2023年第3期256-264,共9页Journal of Dalian University of Technology

基　　金：辽宁省生态环境厅政府采购项目(LNZC2018-0189)。

摘　　要：基于非结构化网格的MIKE 21模型,在水动力(HD)模型的基础上叠加对流扩散(Transport)模块,考虑陆源排污口的影响,建立了大连湾海域二维污染物输运模型,对化学需氧量(COD)、溶解无机氮(DIN)、活性磷酸盐(PO_(4)^(3-)-P)环境容量进行了数值模拟.综合海洋功能区划要求和环境现状,采用线性规划的排海通量最优化法计算了各排污口的环境容量,提出了排污治理建议.结果表明大连湾内排污口的COD、DIN、PO_(4)^(3-)-P环境容量分别为17 349.1、1 532.7、148.7 t/a.COD仍有排污空间,多个排污口的DIN和PO_(4)^(3-)-P呈超负荷状态.污水处理厂是主要的超标排放源,需优先进行削减控制.研究为合理有效利用海域环境容量资源、制定环境管理决策提供了参考.Based on non-structural grid MIKE 21 model, a convection diffusion module (Transport) is stacked with the hydro-dynamic (HD) model. Considering the affection of land-based pollution outlet, 2D pollutant transportation model in Dalian Bay sea area is established, and the numerical simulation is done for environmental capacity of chemistry oxygen demand (COD), dissolved inorganic nitrogen (DIN) and labile phosphate (PO_(4)^(3-)-P). Integrating the sea regional function requirements and the current environmental situation, the linear programming sea outlet optimization method is proposed to calculate environmental capacity of each pollutant outlet. Suggestions of pollution treatment are given. The results show that COD, DIN and PO_(4)^(3-)-P environmental capacities in pollutant outlets are 17 349.1, 1 532.7 and 148.7 t/a, respectively. There is still more capacity for COD, but several outlets are overloaded with DIN and PO_(4)^(3-)-P. Pollutant treatment factories are the main sources for overload, which should be controlled first. The research provides reference for effectively using marine environmental capacity and making environmental regulation policies.

关 键 词：大连湾 环境容量 排污治理 最优化法 数值模拟 

分 类 号：X55[环境科学与工程—环境工程]