非点源水生态污染下湖泊自清洁功能研究  

Study on Self-cleaning Function of Lakes under Ecological Pollution of Non-point Source Water

作　　者：冯亚耐[1] 李志华[1] Feng Yanai;Li Zhihua(China Water Resources Beifang Investigation, Design and Research Co.Ltd, Tianjin 300222, China)

机构地区：[1]中水北方勘测设计研究有限责任公司

出　　处：《环境科学与管理》2019年第8期171-175,共5页Environmental Science and Management

摘　　要：建立非点源生态污染下湖泊自清洁修复模型,探讨了湖泊流入污染物浓度、湖泊自身浓度以及湖泊流出污染物浓度之间的关系,确定湖泊自我清洁功能实现条件:当非点源污染物流入湖水的浓度小于湖泊污染物自身的浓度时,湖泊可以进行自行修复,否则难以进行自我修复。分别分析了沉水植物、挺水植物以及浮叶植物对于湖泊的净化能力,通过实验探讨了水生植物对于COD、TP、TN、NH3-N、SRP以及pH含量的修复能力。结果表明,当湖泊具备自我清洁功能实现条件时,水体植物可以有效降低湖泊中的COD、TP、TN、NH3-N、SRP含量,改善水体pH值,降低水体富营养化,增加水生植物的多样性。A model of lake self-cleaning remediation under non-point source ecological pollution was established, and the relationship between the concentration of pollutants inflow into the lake, the concentration of pollutants in the lake itself and the concentration of pollutants outflow from the lake was discussed. The realization conditions of lake self-cleaning function were determined. When the concentration of non-point source pollutants inflow into the lake was less than the concentration of pollutants in the lake itself, the lake could be self-repaired It is difficult to repair oneself. The purification ability of submerged plants, emergent plants and phytoplankton to lakes was analyzed, and the restoration ability of aquatic plants to COD, TP, TN, NH 3-N, SRP and pH content was discussed through experiments. The results show that when lakes have self- cleaning conditions, water plants can effectively reduce the contents of COD, TP, TN, NH 3-N and SRP, improve the pH value, reduce eutrophication and increase the diversity of aquatic plants.

关 键 词：非点源污染 生态污染 湖泊清洁 自清洁功能 湖泊治理 

分 类 号：X824[环境科学与工程—环境工程]