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http://dx.doi.org/10.9720/kseg.2021.4.523

Case Study on the Treatment of Acid Rock Drainage from an Embankment with Pyrite Rocks  

Gong, Jeong-Sik (Technical Review Office, Korea Express Cooperation)
Kim, Tae-Hyung (Department of Civil Engineering, Korea Maritime and Ocean University)
Song, Young-Suk (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
The Journal of Engineering Geology / v.31, no.4, 2021 , pp. 523-532 More about this Journal
Abstract
The treatment of acid rock drainage was reviewed and evaluated for the case of pyrite rocks distributed in a highway embankment. During the highway's construction, neutralization using alkaline water repellent was applied to the embankment section to prevent acid rock drainage. However, it still occurred long after the construction was completed owing to rain infiltration, and the acid rock drainage polluted the surrounding soils and streams. To solve this problem, treatment facilities such as SAPS (Successive Alkalinity Producing Systems) or ecological wetlands and sand filtration were installed. After the installation of the treatment facilities, the effluent and soils contaminated by acid rock drainage nearby the outlet of the facilities were analyzed and evaluated for a period of years. Measurements of the pH of the effluent and analysis of the heavy metal contamination of the soils confirmed that the neutralization treatment for acid rock drainage is being performed properly and that contamination of heavy metals in the acid rock drainage is also being stably controlled by the treatment facilities.
Keywords
pyrite rocks; acid rock drainage; highway construction; embankment materials; treatment facilities;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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4 Ministry of Environment, 2009, Soil environment conservation act.
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