[1]韦延梅,陈余道,吴圣华,等.乙醇对过硫酸盐氧化地下水中苯系物的影响[J].水文地质工程地质,2019,46(06):142-148.[doi:10.16030/j.cnki.issn.1000-3665.2019.06.19]
 WEI Yanmei,CHEN Yudao,WU Shenghua,et al.Effect of ethanol on persulfate oxidation of BTEX in groundwater[J].Hydrogeology & Engineering Geology,2019,46(06):142-148.[doi:10.16030/j.cnki.issn.1000-3665.2019.06.19]
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乙醇对过硫酸盐氧化地下水中苯系物的影响()
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《水文地质工程地质》[ISSN:1000-3665/CN:11-2202/P]

卷:
46卷
期数:
2019年06期
页码:
142-148
栏目:
环 境 地 质
出版日期:
2019-11-15

文章信息/Info

Title:
Effect of ethanol on persulfate oxidation of BTEX in groundwater
文章编号:
1000-3665(2019)06-0142-07
作者:
韦延梅陈余道吴圣华孟伟
桂林理工大学环境科学与工程学院,广西 桂林541006
Author(s):
WEI Yanmei CHEN Yudao WU Shenghua MENG Wei
College of Environmental Science and Engineering, Guilin University of Technology, Guilin, Guangxi541006, China
关键词:
苯系物乙醇过硫酸盐原位化学氧化地下水
Keywords:
BTEX ethanol persulfate in situ chemical oxidation (ISCO) groundwater
分类号:
P641.3
DOI:
10.16030/j.cnki.issn.1000-3665.2019.06.19
文献标志码:
A
摘要:
过硫酸盐已经被广泛用于土壤和地下水有机污染物的原位化学氧化修复。随着乙醇汽油的推广,乙醇汽油引起的地下水污染问题越来越严重,因此有必要去除该类污染物。前人研究乙醇汽油污染修复多数停留在自然修复技术,为了进一步探究去除地下水中乙醇汽油更为有效的技术手段,深入了解乙醇对降解苯系物(BTEX)存在的潜在风险,需要研究使用新的修复方法。文章通过批实验探索了过硫酸盐氧化法对乙醇汽油污染地下水的修复效果,以及Fe2+活化和过硫酸盐添加方式变化对乙醇汽油中苯系物(BTEX)和乙醇的去除影响。结果表明:活化后的过硫酸盐能够有效去除地下水中的BTEX,但会抑制BTEX的生物降解作用;当有乙醇存在时,过硫酸盐能够优先氧化BTEX,其去除速率明显高于乙醇,这与单纯生物降解作用相反。在过硫酸盐投注总量一定时,分批添加更有利于BTEX的去除,但对乙醇去除没有明显促进作用。该研究为过硫酸盐原位化学氧化技术在地下水乙醇汽油污染修复中的应用提供了重要参考。
Abstract:
Persulfate has been widely used for in situ chemical oxidation remediation of organic pollutants in soil and groundwater. With the promotion of ethanol gasoline, the problem of groundwater pollution caused by ethanol gasoline has become more and more serious. Therefore, it is necessary to remove such pollutants. Previous studies on ethanol gasoline mostly focused on natural restoration technology. In order to further explore the more effective technical means to remove ethanol gasoline from groundwater and gain insight into the potential risks of ethanol degradation of BTEX, it is needed to study the use of new repair methods. In this paper, a batch experiment is conducted to explore the remediation effect of persulfate oxidation on ethanol-contaminated groundwater and the influences of Fe2+ activation and persulfate addition method on the removal of aromatics (BTEX) and ethanol. The results indicate that persulfate activated by Fe2+ effectively removes BTEX from groundwater, but inhibits biodegradation of BTEX. When ethanol is present, the persulfate preferentially oxidizes BTEX, and its removal rate is significantly higher than that of ethanol, which is exactly the opposite of pure biodegradation. If the total amount of persulfate addition is constant, batch addition is more conducive to the removal of BTEX, but has no obvious promotion effect on ethanol removal. This study provides an important reference for the application of persulfate ISCO in the remediation of the contaminated groundwater by ethanol gasoline.

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相似文献/References:

[1]张敏,王森杰,陈素云,等.地下水苯系物微生物降解及其碳同位素标记[J].水文地质工程地质,2017,44(2):129.
 ZHANG Min,WANG Senjie,CHEN Suyun,et al.Biodegradation of BTEX in groundwater and its carbon isotope identification[J].Hydrogeology & Engineering Geology,2017,44(06):129.

备注/Memo

备注/Memo:
收稿日期: 2019-07-04; 修订日期: 2019-09-08
基金项目: 国家自然科学基金项目(41172229;41362012)
第一作者: 韦延梅(1989-),女,硕士研究生,主要从事地下水污染修复研究。E-mail:820673889@qq.com
通讯作者: 陈余道(1965-),男,博士,教授,主要从事地下水科学与工程教学与科研工作。E-mail: cyd0056@vip.sina.com
更新日期/Last Update: 2019-11-15