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Environmental Engineering Research 2002;7(2): 59-66. DOI: https://doi.org/10.4491/eer.2002.7.2.059
ASSESSMENT OF LEACHING POTENTIAL OF HAZARDOUS COMPOUNDS FROM DEMOLITION WASTE AND EFFECT OF ON-SITE LANDFILL IN DAM CONSTRUCTION SITE
Kyeong-Ho Lim1, Eung-Ju Hwang2, and Hang-Sik Shin3
1Department of Civil and Environmental Engineering, Kongju National University, Kongju 314-701, Korea
2Environmental Engineering Research Center, Nanyang Technological University, Singapol 2263, Singapol
3Department of Civil Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea
Corresponding Author: Kyeong-Ho Lim ,Tel: +82-41-850-8633, Fax: +82-41-850-9388, Email: khlim@kongju.ac.kr
Received: August 13, 2001;  Accepted: April 12, 2002.
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ABSTRACT
Leaching potential and management strategy of demolition wastes in the dam construction site were investigated. There was no consistency in classification of the waste. Also, there was a difference in basic units for the estimation of generation amount. By converting collected data into tonnage base, unit generation of demolition waste was found as ranged from 3,400 to 3,700 ton/km2. And the unit generation of logged tree waste ranged from 12,000 to 31,400 ton/km". Treatment or disposal of dam construction wastes was being done by consignment between project manager and consignor, and the major treatment methods were remote landfilling, incineration, recycling, and on site landfilling. Leaching potential of some hazardous compounds from demolition wastes were very low in all the test conducted here. Demolition wastes itself had substantial amount of heavy metal, but the leaching speed was slow enough to be negligible. Concentration of heavy metal in the water of a dam where the demolition wastes buried on-site, could be calculated as 0.016, 0.004, and 0.02 ppb for Cu, Cd, and Cr, respectively, which were fairly lower than those of drinking water standard.
Keywords: dam | demolition waste | leaching potential | long-term leaching test | on-site landfill
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