长春市伊通河北北段水环境治理与生态修复工程设计

Water Environment Control & Ecological Restoration Engineering Design of the North Section of Yitong River (North) in Changchun

概述北方寒冷地区河流水环境治理与生态修复工程的重难点问题,提出“工程目标-现状差距-原因分析-对症下药-模型验证-工程目标”的闭路循环设计思路。通过污染物溯源解析和水动力-水质模型计算,建立工程措施与目标之间的因果关系,结合项目所在地的环境、气候、水文等实际情况,有针对性地选择污水处理厂提标改造、合流制管道溢流(CSO)调蓄处理、点源污水纳管、多功能复合人工湿地建设、清淤及底泥处理处置、水生动植物群落重构等技术措施,构建智慧水务系统增强运行管理水平,确保监测断面全年度达到水质目标,河道生态系统恢复到健康状态。

This paper summarizes the key & difficult problems of river water environment control & ecological restoration projects in cold regions of North China, and puts forward the closed-circuit design idea of project objectivecurrent gap-cause analysis-right remedy for the situation-model validation-project objective. Based on the analysis of pollutant traceability and the calculation of hydrodynamic-water quality model, the causal relationship between engineering measures & targets is established. Combined with the actual conditions of environment, climate and hydrology in the project site, the target selections & technology measures of sewage treatment plant upgrading, CSO storage & treatment, point source sewage pipe, multi-functional composite constructed wetland construction, silt removal & bottom mud treatment, and aquatic & plant community reconstruction are made and adopted, which will build an intelligent water system to enhance operation & management level, to ensure that the monitoring section achieves the water quality target throughout the year, and then, the river ecosystem will restore to a healthy state.