摘要
重庆本地紫土作为生物滞留带填料存在易板结、易堵塞、磷去除效果较低等问题,分别用沸石、蛭石、火山石与本地紫土以10%、20%、35%、50%的体积比混合,考察不同改良材料及级配对磷素(以总磷计)的去除效果及填料渗透系数的变化。结果表明,沸石改良本地紫土对磷素去除提升效果最优,35%沸石+65%本地紫土对磷素去除效果最佳。综合磷去除效果和渗透性能,沸石、火山石可作为改良本地紫土的优先选择材料。
As a filler in the biological retention zone,Chongqing's local purple clay has problems such as easy compaction,easy clogging,and low phosphorus removal efficiency.Zeolite,vermiculite,volcanic stone and local purple clay are used at 10%,20%,35%,and 50%respectively.Mix by volume ratio to investigate the removal effect of different modified materials and gradations of phosphorus(based on total phosphorus)and the change of filler permeability coefficient.The results showed that the zeolite-improved local purple soil had the best phosphorus removal effect,35%zeolite+65%local purple soil has the best phosphorus removal effect.Comprehensive phosphorus removal effect and permeability,zeolite and volcanic stone can be used as preferred materials for improving local purple clay.
作者
雷晓玲
黄星
牛佳伟
杨程
魏泽军
Lei Xiaoling;Huang Xing;Niu Jiawei;Yang Cheng;Wei Zejun(Hehai College, Chongqing Jiaotong University, Chongqing 400074, China;Chongqing Institute of Science and Technology, Chongqing 400074, China)
出处
《环境科学与管理》
CAS
2021年第2期88-91,共4页
Environmental Science and Management
基金
重庆市技术创新与应用示范专项产业类重点研发项目(cstc2018jszx-cyzdX0037)
重庆市社会民生科技创新专项(cstc2016shmszx30024)。
关键词
生物滞留带
填料级配
总磷
渗透性
bioretention zone
packing gradation
TP
permeability
