环氧树脂改性黄土作为生物滞留池填料净化径流污染物  

Bioretention cells with epoxy resin modified loess to remove runoff pollutants

作　　者：周航 周佳佳 熊家晴[1] 徐艳玮 ZHOU Hang;ZHOU Jia-jia;XIONG Jia-qing;XU Yan-wei(Key Lab of Northwest Water Resource,Environment and Ecology,School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]西安建筑科技大学环境与市政工程学院,西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《中国环境科学》2025年第1期175-184,共10页China Environmental Science

基　　金：国家自然科学基金资助项目(52070152)。

摘　　要：选用环氧树脂改良黄土材料作为生物滞留池主要填料,试验设计了48种不同参数的原料配比,以有效改善湿陷性黄土的低渗透性为基准(大于2mm/min)筛选出满足要求的4种环氧树脂与黄土的配比方案,分别是环氧树脂含量5%(b5)、环氧树脂含量10%(b10)、5%环氧树脂+1%造孔剂(b5d1)和10%环氧树脂+1%造孔剂(b10d1).相比传统填料,4种改良材料均对NH_(4)^(+)-N和磷酸盐展现出了更强的吸附能力.其中b5d1用于生物滞留池填料后对NH_(4)^(+)-N和COD的平均去除效果最好,分别达到了93.97%和77.5%,b5能更有效的去除NO_(3)^(-)-N(76.6%)、TN(62.4%)和TP(98%).通过微生物分析可知b5含较多参与脱氮过程的菌群如Chloroflexi和Steroidobacter.改良黄土填料生物滞留池可以有效去除NH_(4)^(+)-N、NO_(3)^(-)-N、TN、TP和COD.研究表明,环氧树脂改良黄土可以用作生物滞留池填料,能够有效净化径流雨水中的污染物,具有广泛的推广价值.This paper chose epoxy resin modified loess as the primary filler for the biological retention tank.It tested 48 different raw material types with varying parameters to improve the ratio of epoxy resin to loess as the benchmark(greater than 2mm/min).The corresponding epoxy resin content is 5%(b5),10%(b10),5%(b5d1),and 10%(b10d1).The adsorption capability of the four enhanced materials for NH_(4)^(+)-N and phosphate was stronger than that of conventional fillers.After the biological retention tank was filled,b5d1had the best average removal of NH_(4)^(+)-N and COD,reaching 93.97%and 77.5%,respectively.b5also removed NO_(3)^(-)-N(76.6%),TN(62.4%),and TP(98%)more successfully than the other two.Through microbial investigation,b5was found to contain more organisms including Chloroflexi and Steroidobacter that are engaged in the flora process.The NH_(4)^(+)-N,NO_(3)^(-)-N,TN,TP,and COD can all be efficiently removed by an enhanced loess packed biological tank.According to studies,loess enhanced with epoxy resin has a wide range of promotional uses,may be utilized as biological tank packing,and effectively filters contaminants in runoff rainfall.

关 键 词：生物滞留池 黄土 环氧树脂 水质净化 原位建设 

分 类 号：X703.5[环境科学与工程—环境工程]