Remediation of Contaminated Surface Water by Permeable Reactive Barriers (PRBs): Lab-Scale Experiments with Four Industrial Wastes as Reactive Media

Li Cui; Rui Gao; Fang Qin Cheng; Jian Feng Li; Xu Ming Wang

doi:10.4028/www.scientific.net/AMM.295-298.1850

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 295-298Remediation of Contaminated Surface Water by...

Remediation of Contaminated Surface Water by Permeable Reactive Barriers (PRBs): Lab-Scale Experiments with Four Industrial Wastes as Reactive Media

Abstract:

Four industrial wastes: iron scraps, ceramsite, fly ash and steel slag were studied as reactive media for COD removal from the Fenhe River. Leaching tests demonstrated that iron scraps and ceramsite were relatively stable compared to steel slag and fly ash. Ca²⁺ was the main leaching ion. Batch experiment results showed that iron scraps and steel slag had better COD removal efficiency than ceramsite and fly ash. It was also found that the initial pH was important for COD removal and the COD removal efficiency of iron scraps was linearly correlated with the initial pH (R²=0.982). Compared to batch experiments, COD removal was much higher in column tests, which were about 70%, 54%, 46% for iron scraps, steel slag and ceramsite respectively.

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Applied Mechanics and Materials (Volumes 295-298)

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1850-1854

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.295-298.1850

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Online since:

February 2013

Authors:

Li Cui, Rui Gao, Fang Qin Cheng, Jian Feng Li, Xu Ming Wang

Keywords:

Ceramsite, COD Removal, Fly Ash (FA), Iron Scraps, Steel Slag

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