铬污染地下水的PRB反应介质筛选及修复试验

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Experiment on Selection of PRB Media and Remediation of Chromium Contaminated Groundwater

YANG Wei^11,2, XU Li¹, YANG Jun-feng¹

1.School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168,China;2. Shenyang Water Supply Engineering Prospecting Design & Research Institute, Shenyang 110005,China

Received:2007-10-25 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
Contact: YANG Wei

Abstract

Abstract: The selection of the economical and feasible reactive media was studied on in-situ remediation of Cr(Ⅵ) contaminated groundwater in Permeable Reactive Barrier technology through experiment. Four kinds of matrials, viz. the modified bentonite (MB), Fe⁰, the fly ash and the activated carbon were selected for PRB media testing. The effective and economical modified bentonite was carried on the dynamic experiment as the PRB media. The experimental results indicate that the Cr(Ⅵ) concentration decreases from 0.50 mg/L to 0.05 mg/L which is less than the national groundwater quality Ⅲ standard. Simultaneously, the MB shows the large adsorption quantity, easier liquid-solid separation，no desorption and secondary pollution. It is feasible that the modified bentonite as the PRB media is to remedy the Cr(Ⅵ) contaminated groundwater.

Key words: selection, permeable reactive barrier, modified bentonite, remediation

CLC Number:

P641.1

YANG Wei, WANG Li-dong, XU Li, YANG Jun-feng. Experiment on Selection of PRB Media and Remediation of Chromium Contaminated Groundwater[J].J4, 2008, 38(5): 854-0858.

References

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