景观湖泊黑臭水体生态修复措施和效果——以武汉市金湖生态修复工程为例

Ecological restoration measures and effects of black and odorous water bodies in landscape lakes——Taking Jinhu ecological restoration project in Wuhan city as an example

为修复受到污染呈黑臭状态的金湖水体,建设金银湖国家湿地公园,在分析金湖水质、底质概况及黑臭水体成因的基础上,采取点源污染、面源污染、内源污染同步控制和边治理边修复的方法,在不进行大规模清淤、不扰动水体情况下建设湖滨缓冲带,对湖泊底质进行修复。结果表明:湖泊水质得到了明显改善,各项水质指标均低于《城市黑臭水体整治工作指南》中的轻度黑臭标准限值,修复后水质达到了地表水Ⅲ类标准;在中央环保督察组巡视反馈重点整治湖泊水质变化报告中被评为“好转”等级,实现了黑臭水体治理以及生态修复的目标。该治理修复案例可为城市内陆景观湖泊生态修复提供参考。

In order to restore the polluted Jinhu Lake with black and odorous waterbody,and build the Jinyin Lake National Wetland Park,on the basis of analyzing the water quality,sediment conditions and causes of black and odorous water,the methods of simultaneous control of point source pollution,non-point source pollution,endogenous pollution,and restoration while treatment were used to build a lakeside buffer zone and restore the lake bottom without large-scale dredging and water disturbance.The results showed that the water quality of Jinhu Lake was significantly improved,and all water quality indicators were lower than the mild black and odor standard limit in the“Guidelines for Urban Black and Smelly Water Remediation Work”,and the water quality reached Class III level of surface water quality standard;In the report of the improvement of lake water quality inspected by the central environmental protection inspection team,the water quality of Jinhu Lake was rated as“improved”.The goal of black and odorous water treatment and ecological restoration was achieved.This treatment and restoration case can provide a reference for the ecological restoration of urban inland landscape lakes.