河泥与海泥陶粒填料生物滞留设施径流控制试验  

Experiment on runoff control of bioretention facilities using river mud and sea mud ceramsite as fillers

作　　者：李俊奇[1,2] 张兴宇 林聪 吴允红 LI Junqi;ZHANG Xingyu;LIN Cong;WU Yunhong(Key Laboratory of Urban Stormwater System and Water Environment(Beijing University of Civil Engineering and Architecture),Ministry of Education,Beijing 100044,China;Collaborative Innovation Center for Energy Conservation&Emission Reduction and Sustainable Urban-Rural Development in Beijing,Beijing 100044,China;Beijing Yuren Raineco Technology Co.,Ltd.,Beijing 100080,China)

机构地区：[1]北京建筑大学城市雨水系统与水环境教育部重点实验室,北京100044 [2]北京节能减排与城乡可持续发展省部共建协同创新中心,北京100044 [3]北京雨人润科生态技术有限责任公司,北京100080

出　　处：《水资源保护》2023年第3期229-236,共8页Water Resources Protection

基　　金：北京市自然科学基金重点项目(8191001)。

摘　　要：为探讨河道疏浚泥(河泥)和海洋疏浚泥(海泥)资源化用于生物滞留填料的可行性,分别以河泥和海泥为主要原料制备陶粒,并以两种陶粒为填料搭建了生物滞留试验柱,通过径流雨水渗滤模拟试验,研究了两种试验柱在不同降雨重现期、不同降雨历时和不同污染物质量浓度条件下的运行效果。结果表明:河泥与海泥陶粒作为填料时,生物滞留柱中COD、TP、TN和NH_(3)-N的淋失量较低,污染物淋失风险较小;在降雨重现期为0.5 a时,河泥与海泥陶粒填料生物滞留柱出流时间分别为49 min和48 min,平均水量削减率分别为34.36%和44.87%,比传统砂土填料生物滞留柱分别提高了34.75%和75.96%;河泥与海泥陶粒填料生物滞留柱对污染物的削减效果明显,对COD、TP、TN、NH_(3)-N平均负荷削减率分别为50.27%、99.08%、50.72%、79.15%与54.20%、99.58%、55.43%、80.86%,均高于传统砂土填料生物滞留柱。In order to explore the feasibility of recycling river dredged mud(river mud)and sea dredged mud(sea mud)to bioretention fillers,we prepared two kinds of ceramsite with river mud and sea mud,respectively.Bioretention experiment columns were built using the two kinds of ceramsite as fillers.The efficiency of the two columns under different rainfall return periods,rainfall durations and pollutant mass concentrations were studied by simulation experiments of runoff rainwater infiltration.The results showed that the leaching amount of COD,TP,TN and NH_(3)-N in bioretention columns were low when river mud and sea mud ceramsite were used as fillers,which means that there was little risk of pollutant leaching.When the return period of rainfall was 0.5 a,the outflow duration of bioretention columns with river mud and sea mud ceramsite fillers were 49 min and 48 min,and the average water reduction rates were 34.36%and 44.87%,respectively,which are 34.75%and 75.96%higher than traditional bioretention columns with sandy soil filler.Bioretention columns with river mud and sea mud ceramsite fillers show significant effect on pollutants reduction,with average load reduction rates of COD,TP,TN,NH_(3)-N being 50.27%,99.08%,50.72%,79.15%and 54.20%,99.58%,55.43%,80.86%,respectively,which were better than traditional bioretention columns with sandy soil filler.

关 键 词：河道疏浚泥 海洋疏浚泥 陶粒 生物滞留设施 径流污染控制 城市雨水管理 

分 类 号：X52[环境科学与工程—环境工程]