利用再生水涵养地下水过程中3种典型内分泌干扰物的迁移转化特性  

MIGRATION AND BIOTRANSFORMATION OF THREE TYPICAL ENDOCRINE DISRUPTING CHEMICALS IN THE LEACHING PROCESS FROM RIVER WATER TO GROUND WATER USING RECLAIMED WATER

作　　者：陈宗耀 李艳[2] 李阳瑶 CHEN Zong-yao;LI Yan;LI Yang-yao(Quality Supervision of Water-Related Constrution Quota Bureau of Hainan Province,Haikou 571100,China;College of Civil Engineering,Hainan University,Haikou 570228,China;College of Environment Science and Engineering,Beijing Forestry University,Beijing 100053,China)

机构地区：[1]海南省水务建设质量监督定额局,海口571100 [2]海南大学土木工程学院,海口570228 [3]北京林业大学环境科学与工程学院,北京100083

出　　处：《环境工程》2018年第10期35-42,共8页Environmental Engineering

基　　金：北京市自然科学基金(8132040)

摘　　要：通过土柱模拟试验研究了3种典型的内分泌干扰物——17β-雌二醇(E2)、炔雌醇(EE2)和双酚A (BPA)在再生水涵养地下水过程中的吸附、生物降解和迁移特性。结果表明:3种EDCs的衰减效果为E2>EE2>BPA,3种不同运行方式下的衰减效果为干湿交替回灌(WDAR)>连续回灌(CR)>连续灭菌回灌(CSR)。在连续回灌条件下,E2、EE2和BPA的衰减速率常数分别为0.0783,0.0505,0.0479 m^(-1);总去除率为98%、96%和92%,其去除率受温度影响。土柱微生物的分析结果表明:土柱下层微生物群落结构的多样性明显高于上层。主要微生物群落为变形菌属,包括α、β变形菌,其对EDCs的降解起主要作用。About tens of billions of tons of reclaimed water was leached into groundwater every year in China, which causes endocrine disruptors（EDCs） to enter the soil and aquifers. This poses potential risks to the safety of groundwater supply. The paper investigated the adsorption, biodegradation, and migration characteristics of three typical endocrine disruptors including 17β-estradiol（E2）, ethinyl estradiol（EE2）, and bisphenol A（BPA） during reclaimed water conservation of groundwater by soil column simulation. The results showed that the attenuation effects of the three EDCs were E2EE2BPA. The attenuation effects under three different operating modes were WDARCRCSR. Under continuous recharge conditions, the decay rate constants of E2, EE2 and BPA were 0.0783, 0.0505, 0.0479 m^（-1）, respectively; the total removal rates were 98%, 96% and 92%, and their removal rates were affected by temperature. The analysis results of the soil column microbes showed that the diversity of the microbial community structure in the lower soil column was significantly higher than that in the upper layer. The main microbial community was the genus proteobacteria, including the alpha and beta proteobacteria, which played a major role in the degradation of EDCs.

关 键 词：内分泌干扰物 吸附 生物降解 微生物群落 再生水回灌 

分 类 号：X131.2[环境科学与工程—环境科学]