静脉河道负荷削减工程及其效果分析

Load Curtailment Projects and Effects Analysis of Venous Channel

在分析太湖流域入湖河流水环境现状的基础上,通过负荷削减工程的实施,使河网水质达到功能区要求,削减入湖河流的污染物排放总量,从而降低太湖污染负荷。以武进港流域的建华河、跃进河、红旗河等8条河为研究对象,开展了静脉河道负荷削减技术研究,对8个负荷削减工程的运行效果进行比较,研究出适用于流域河网地区的负荷削减技术,包括垂向移动式生态床技术、生物接触氧化技术、生态浮岛技术等。负荷削减效果表明,该技术可有效去除静脉河道低中度污染水中的N、P等污染物质,并具有良好的生态景观效果。通过进一步优化,可形成适合于太湖流域河网地区水环境质量改善和生态修复的关键技术。太湖流域的污染负荷主要来自入湖河流,开展入湖河流水环境综合治理对太湖流域水环境和湖体富营养化改善具有重要的意义。

Based on analyzing the water environment status of the rivers inflow into Taihu Lake,the implementation of the load curtailment engineering enabled the water quality of river network reach the standard of function zones,reduced total discharge of pollutants of inflowing rivers and decreased pollution load of Taihu Lake.In this paper,With Jianhua River,Yuejin River,Hongqi River,etc.,eight rivers of Wujin River as study objects,the study on load curtailment technology of venous channel was carried out,the treatment effect of these eight demonstration projects were compared,and load curtailment technology for Wujin River had developed,which included vertical movement-type eco-bed technology,bio-contact oxidation technology and ecological floating island technology,etc.The effect of load curtailment showed that this technology could effectively remove nitrogen,phosphorus and other pollutants of venous channel low and medium polluted water,it also had a good effect of ecological landscape.By further optimized,the key technologies of the water quality improvement and ecological restoration that suitable for Taihu Lake basin river network were formed.Pollution loads of Taihu Lake basin were mainly from the inflowing rivers.Therefore,overall treatment of the inflowing rivers of Taihu Lake was of great importance to the improvement of water environment and the eutrophication status.