多峰值降雨下典型源头LID设施对径流污染物的去除特性  

Characteristics of Runoff Pollutants Removal by Typical Source LID Facilities under Multi Peak Rainfall

作　　者：廖晖 刘成林 李洁芬 LIAO Hui;LIU Chenglin;LI Jiefen(Hunan Liuyang Economic Development Zone Water Co.,Ltd.,Changsha 410300,China;Guangzhou Chuangjing Municipal Engineering Design Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]湖南浏阳经开区水务股份有限公司,湖南长沙410300 [2]广州市创景市政工程设计有限公司,广东广州510000

出　　处：《净水技术》2023年第12期142-146,190,共6页Water Purification Technology

摘　　要：以我国西北某市为例,结合大雨量双峰与小雨量多峰雨型的实际降雨,对该市海绵城市建设区内的雨水花园、高位花坛、透水铺装3种典型源头低影响开发(LID)设施进出水污染物浓度进行实测分析。分析得出,在大雨量双峰值降雨事件中,典型源头LID设施出口污染物浓度分布呈单峰型;在小雨量多峰值降雨事件中,典型源头LID设施出口污染物浓度分布呈负斜率直线型。雨水花园和高位花坛在小雨量多峰值降雨事件中的污染物去除率比大雨量双峰值降雨事件的要高,而透水铺装在小雨量多峰值降雨事件中的污染物去除率比大雨量双峰值降雨事件中的低。Taking a city in Northwest China as an example,the concentration of pollutants in inflow and outflow of three typical source LID facilities in rainwater garden,high-level flower beds and pervious paving in sponge city construction area of the city was measured and analyzed in combination with actual rainfall conditions of heavy rainfall,double-peak rainfall and small rainfall,multi-peak rainfall.The analysis showed that in the double-peak rainfall event of heavy rainfall,the concentration distribution of pollutants at the outlet of sponge city facilities was unimodal;in the event of low rainfall and multi-peak rainfall,the concentration of pollutants at the outlet of sponge city facilities was linear with negative slope.The pollutant removal rates of rain gardens and raised flower beds were higher in low rainfall events with multiple peaks than in heavy double peak rainfall events.The pollutant removal rate of permeable pavement in multi-peak rainfall events with low rainfall was lower than that in double-peak rainfall events with heavy rainfall.

关 键 词：雨水花园 高位花坛 透水铺装 多峰值雨量 雨水径流污染 

分 类 号：TU992[建筑科学—市政工程]