摘要
人工湿地技术是海绵城市建设中净化雨水水质和削减雨洪峰值的重要技术。将海绵城市雨水人工湿地滞蓄容积分为前置调蓄池/塘的有效滞蓄容积和湿地床的有效滞蓄容积两部分进行探讨,给出了详细计算公式和合理选择前置调蓄池/塘出水控制方式的要点,并说明了雨水人工湿地随降雨情况而改变的运行方式。以重庆市棕榈泉雨水人工湿地为例,利用有效滞蓄容积计算公式,分析了人工湿地对降雨径流的滞蓄效果,表明人工湿地年雨水滞蓄总量达到了汇水区地表径流总量的72%,其中前置调蓄池作用很大,占滞蓄总量的96. 5%,尤其对规模小的人工湿地更是如此。
Constructed wetland is widely used in rainwater purification and reduction of rain flood peak in the construction of sponge city. The retention volume of stormwater wetland in sponge city was divided into pre-storage pool/pond effective retention volume and wetland bed effective retention volume. The detailed calculation formula and the reasonable choice of effluent control mode of pre-storage pool/ pond were introduced, and the operating modes of stormwater wetland could be changed by variation of rainfall. As a case study, the retention effect of Palm Spring constructed wetland on rainfall runoff in Chongqing was analyzed with the volume calculation formula. The results indicated that the constructed wetland total annual rain retention reached 72% of the total surface runoff in the catchment area. The effect of pre-storage pool was very large, accounting for 96.5 % of the total retention, especially for small scale constructed wetland.
作者
肖海文
代蕾
任莉蓉
翟俊
谭军莲
XIAO Hai-wen;DAI Lei;REN Li-rong;ZHAI Jun;TAN Jun-lian(Key Laboratory of the Three Gorges Reservoir Region＇s Eco-Environment 〈 Ministry of Education 〉,Chongqing University,Chongqing 400045,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第18期53-57,65,共6页
China Water & Wastewater
基金
国家水体污染控制与治理科技重大专项(2009ZX07315-006)
关键词
人工湿地
海绵城市
雨水径流
滞蓄
constructed wetland
sponge city
runott
retention
