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http://dx.doi.org/10.4491/KSEE.2013.35.10.756

Economical Feasibility of the Treatment Methods of the Dredged Sediments from Contaminated Agricultural Reservoirs  

Oh, Kyoung-Hee (Department of Environmental Engineering, Chungbuk National University)
Cho, Young-Cheol (Department of Environmental Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.35, no.10, 2013 , pp. 756-762 More about this Journal
Abstract
The economical feasibility was conducted to find the adequate method to treat the dredged sediments from agricultural reservoirs in a pilot project that had been operated to improve the quality of water and benthic environments by dredging of contaminated sediments. For benefit/cost (B/C) analysis, the net expenses were considered as the costs of project, and the benefits were calculated from the saving of waste-treatment cost through reuse of dredged sediment, the saving of construction cost of settling pond, and the values of retained water by dredging. Although the economic feasibility depended on the sites of operation, the average B/C value of the pilot project was estimated as 1.32, indicating this project is economically feasible. Depending on the treatment methods, the B/C values were in the order of the methods of coagulating sedimentation, machinery dewatering, stabilization through exothermic reaction, and soil improvement and stabilization. The machinery dewatering method is estimated as the most adequate one to treat the dredged sediments because of the minimum riskiness of secondary pollution, the recyclability, and its economic feasibility.
Keywords
Agricultural Reservoirs; Dredged Sediment; Sediment Treatment; Economic Feasibility; Benefit-Cost Analysis; Machinery Dewatering;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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