北京市陶然亭公园湖水水质评价与分析

Evaluation and Analysis of Lake Water Quality in Taoranting Park, Beijing

陶然亭公园湖区水生态景观治理是北京市西城区水生态治理的重要组成部分,研究其水生态环境及水质提升技术具有重要意义。通过持续监测湖水及底泥中关键指标总结水质变化趋势及底泥营养盐特征,对比了现有水处理措施净水效果,综合分析了陶然亭湖水生态环境现状。结果表明:陶然亭东、西、南三大湖区的水质状态较不稳定,依靠人工干预可达到地表水质IV类标准;主要原因在于陶然亭湖区水体封闭,自净能力弱,水生态系统不完善,水循环动力不足,以及底泥有机质含量逐年累积。针对陶然亭湖区水生态环境现状问题,提出了水体生态构建、水力流态优化、水处理循环装置的增设、原位强化污染物控制、智慧监测预警等多维度的处理技术,以期实现公园水生态环境的长效治理目标。

The treatment of water ecological landscape in Taoranting Park Lake area is an important part of Beijing Xicheng district lake area management.It is of great significance to study its water ecological environment and water quality improvement technology.Through continuous monitoring of the key indicators in the water and sediment of Taoranting Lake,this study summarized the dynamic trend of water quality and nutrient characteristics of sediment,compared the water purification effect of existing water treatment measures,and comprehensively analyzed the current water ecological environment of Taoranting Lake.The results showed that the water quality of the three lakes in the east,west and south of Taoranting was unstable,and it can reach the class IV of surface water quality standard only by manual intervention.The main reasons were that the water in Taoranting Lake Area was closed;the self-purification ability was weak;the water ecosystem was imperfect;the water cycle power was insufficient,and the organic matter content of the sediment accumulated year by year.In view of the current situation of water ecological environment in Taoranting Lake area,this paper proposed multi-dimensional treatment technologies,such as water ecological construction,optimization of hydraulic flow patterns,addition of water treatment and circulation devices,in-situ strengthening of pollutant control,intelligent monitoring and early warning,in order to achieve the long-term management goal of water ecological environment in Taoranting Lake.