挥发性有机物污染地下水吹脱处理的中小试研究

徐峰; 黄海; 杨勇; 王瑜瑜; 牛静; 曹成成; 张文; 屈智慧; 陈美平

doi:10.3969/j.issn.1674-991X.2017.04.062

挥发性有机物污染地下水吹脱处理的中小试研究

doi: 10.3969/j.issn.1674-991X.2017.04.062

徐峰^1,2,
黄海²,
杨勇^1,2,*, ,,
王瑜瑜²,
牛静²,
曹成成²,
张文²,
屈智慧²,
陈美平²

^1. 中科华南(厦门)环保有限公司,福建厦门 361021
^2. 中科鼎实环境工程有限公司,北京 100029

详细信息

作者简介:
徐峰(1987—),男,工程师,硕士,研究方向为场地地下水修复, xufeng@bjdshj.net

通讯作者:
杨勇 E-mail: yangyong@bjdshj.net

中图分类号: X523
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出版历程
- 收稿日期: 2016-11-03
- 刊出日期: 2017-07-20

Lab and pilot study on treatment of volatile organic compounds contaminated underground water with air stripping method

^1. Zhongke Huanan (Xiamen) Environmental Engineering Co., Ltd., Xiamen 361021, China
^2. Zhongke Dingshi Environmental Engineering Co., Ltd., Beijing 100029, China

More Information

Corresponding author: Yong YANG E-mail: yangyong@bjdshj.net

摘要

摘要: 在小试规模下,研究了不同气液比对地下水中3种典型挥发性有机物1,2-二氯乙烷、苯和氯仿吹脱处理效率的影响。结果表明:在20 ℃、气液比为60∶1时,3种有机物的去除率最佳,分别达89%、93%和95%以上。在小试研究结果的基础上,依托自主开发的吹脱中试设备,研究了气液比、水温、有机物初始浓度和类型对吹脱效率的影响。结果表明:气液比和水温对3种有机物的去除率影响最大,当水温为20 ℃、吹脱塔气液比为75∶1时,1,2-二氯乙烷、苯和氯仿的去除率均达到99.7%以上,达到设计要求。中试吹脱后尾气处理采用DBD(dielectric barrier dischange)低温等离子体协同活性炭处理技术。
- 吹脱处理 /
- 1,2 -二氯乙烷 /
- 氯仿 /
- 苯 /
- 中试研究 /
- 影响因素
Abstract: The effects of different gas-water ratios on the removal efficiency of three typical volatile organic compounds (VOCs), 1,2-dichloroethane, benzene and chloroform, in underground water were evaluated with air stripping tower in laboratory. Results showed that the removal efficiencies were above 89%, 93% and 95% for 1,2-dichloroethane, benzene and chloroform, respectively, under the condition of 20 ℃ and gas-water ratio of 60∶1. Base on the laboratory study, an enlarged stripping tower was designed and used for pilot study on the influences of gas-water ratio, water temperature, VOCs concentration and different VOCs compounds on the removal efficiency. The pilot study results indicated that gas-water ratio and water temperature significantly influenced the removal efficiency of the three VOC compounds. Under the condition of 20 ℃ and gas-water ratio of 75∶1, the removal efficiencies of 1,2-dichloroethane, benzene and chloroform were all higher than 99.7%, which reached the design target values. The off-gas from stripping tower was treated by dielectric barrier discharge (DBD) low temperature plasma plus granular activated carbon (GAC).
- air stripping /
- 1,2-dichloroethane /
- chloroform /
- benzene /
- pilot study /
- influencing factors

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