不同植物栽种方式对生物滞留系统污染物去除的影响  

Effects of different plant cultivation methods on pollutant removal in bioretention systems

作　　者：蒲麟鑫 罗玲利 暴来安 李果 王书敏 潘伟亮[1] PU Lin-xin;LUO Ling-li;BAO Lai-an;LI Guo;WANG Shu-min;PAN Wei-liang(Engineering Laboratory of Environmental Hydraulic Engineering of Chongqing Municipal Development and Reform Commission,College of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Shandong Aoxin Pipeline Technology Co.,Ltd.,Qingdao262500,China;Chongqing Gelin Environmental Protection Technology Co.,Ltd.,Chongqing 400045,China)

机构地区：[1]重庆交通大学河海学院环境水利工程重庆市工程实验室,重庆400074 [2]山东奥新管道工程有限公司,山东青岛262500 [3]重庆阁林环保科技有限公司,重庆400045

出　　处：《应用化工》2023年第11期3090-3094,共5页Applied Chemical Industry

基　　金：住房和城乡建设部科学技术计划项目(2016-K6-025);重庆市科技局项目(CSTB2022NSCQ-MSX1438,cstc2017shmsA20011)。

摘　　要：为了解植物种类及栽种方式对生物滞留系统污染物去除效率的影响,选取了4种重庆市本土植物,通过单独栽种及两两混合栽种方式,构建雨水生物滞留系统,评估所有生物滞留系统对常见污染物的去除效果。结果表明,栽种植物后系统可有效去除氮素和COD,系统对TN、NH_(4)^(+)-N平均去除率存在差异,范围为61.4%~73.9%,81.5%~85.8%,COD平均去除率差异不明显,范围为66.8%~69.3%。由于基质并未饱和,植物的存在对TP去除效果并无明显提升。与去除率最高的栽种单种植物的系统对比,混合栽种植物的系统在COD和氮的去除上更容易出现超产现象。由于混合栽种增强了COD和氮的去除效果,建议将植物多样性纳入生物滞留系统设计中。In order to better understand the impact of plant species and diversity on the removal efficiency of pollutants in bioretention systems,four species of native plants were selected for the experiment in Chongqing,and constructed a rainwater bioretention system by planting them individually or in pairs.The removal effectiveness of bioretention systems for common contaminants was detected.The results showed that the planting system could effectively remove nitrogen and COD,and there were differences in the average removal rates of TN and NH+4-N,ranging from 61.4%to 73.9%,81.5%to 85.8%,and the difference in the average removal rate of COD was not obvious,ranging from 66.8%to 69.3%;the presence of plants did not significantly improve TP removal,because the substrate was not saturated.Compared with the single plant system with the highest removal rate,the mixed plant system was more prone to overproduction in nitrogen and COD removal.Since mixed planting enhances removal of organic matter and nitrogen,it is recommended to incorporate plant diversity into the design of bioretention systems.

关 键 词：生物滞留系统 雨水径流污染物 植物多样性 

分 类 号：TQ016[化学工程] TU992[建筑科学—市政工程] X703[环境科学与工程—环境工程]