人民长江2024，Vol.55Issue(6)：45-52,8.DOI:10.16232/j.cnki.1001-4179.2024.06.007
武汉市东湖底泥污染风险评估及精细化清淤研究
Study on sediment pollution risk assessment and fine desilting in East Lake,Wuhan City
摘要
Abstract
Nutrient exchange at the sediment-water interface is intense and frequent in urban shallow lakes,and the release of sediment pollution has a significant impact on the overlying water,which is one of the main sources of pollution in shallow lakes.Taking East Lake in Wuhan City as an example,two methods including the nitrogen and phosphorus comprehensive pollution index method and static release test were used to assess the sediment pollution risk.Then,the sediment desilting range and thickness were accurately determined taking into account factors such as the desilting process and distribution of aquatic plants.The results show that there is a high synergism between the distribution of total nitrogen and organic matter in the sediment of East Lake,while the correlation between total phosphorus and organic matter is weak;the comprehensive pollution indexes of nitrogen and phosphorus in the upper,middle and lower sediment layers of East Lake are 0.85～11.39,0.52～7.40 and 0.49～6.33,respec-tively,and most of the areas are in the range of light pollution to heavy pollution;the dredging depth of 29.04～110 cm is recom-mended in East Lake.The research results can provide a theoretical basis and technical support for the comprehensive treatment of the water environment in East Lake and other similar urban shallow lakes.关键词
浅水湖泊/内源污染/底泥污染物/释放速率/清淤/综合污染指数法/静态释放试验/东湖/武汉市Key words
shallow lake/internal source pollution/sediment pollutant/release rate/desilting/comprehensive pollution index method/static release test/East Lake分类
资源环境引用本文复制引用
张枫,桂梓玲..武汉市东湖底泥污染风险评估及精细化清淤研究[J].人民长江,2024,55(6):45-52,8.基金项目
湖北省重点研发计划项目"湖北典型城市湖泊水生态保护修复关键技术研究及示范"(2020BCA073) （2020BCA073）
中国工程院战略研究与咨询项目(2023-DFZD-44) （2023-DFZD-44）
湖北省科技创新人才计划科技人才服务企业项目(2023DJC137) （2023DJC137）
