摘要
福州市左海-西湖存在湖水水质指标中TP、TN超标,同时湖中淤泥沉积较多等问题,不能满足V类水体功能和构建生态城市的要求。分析认为造成左海-西湖水体问题的主要原因是湖体上游来水沿线污染、来水中悬浮物沉积和湖体水动力差三个方面。为此,针对性地提出水质净化+补水循环+常态清淤组合技术方案,并采用MIKE21模型对方案进行了水力和水质模拟,模拟结果表明,技术方案能充分改善湖体水动力和提升湖体水质。
The total nitrogen and total phosphorus exceeds the standard in the Zuohai-Xihu Lake of Fuzhou City because of some problems such as the sediment deposition,which couldn,t meet the function of Class V water and the requirement of ecological city construction.The analysis results show that the main causes of water quality problems are the pollution along upstream inflow,sedimentation from suspended solids in the incoming water and the hydrodynamic difference of lake body.Therefore,the combined technology of water purification+replenishment cycle+normal dredging is proposed.In addition,the MIKE21 model is used for simulating the hydraulic and water quality,and it shows that the technical scheme can fully improve the hydrodynamic and water quality of the lake.
作者
陈宏景
CHEN Hongjing(Fuzhou City Construction Design&Research Institute Co.,Ltd.,Fuzhou 350001,China)
出处
《净水技术》
CAS
2019年第11期18-21,共4页
Water Purification Technology
关键词
湖体
水动力
净化
循环
模拟
lake water body
hydrodynamics
purification
recycling
modelling
