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http://dx.doi.org/10.7782/JKSR.2017.20.3.365

A Study for Remediation of Railroad Ballast Gravel Using Dry Washing Method  

Bae, Jiyong (OIKOS. Co., Ltd.)
Jeong, Taeyang (OIKOS. Co., Ltd.)
Kim, Jae Hun (OIKOS. Co., Ltd.)
Lee, Sang Tak (OIKOS. Co., Ltd.)
Joo, Hyung Soo (OIKOS. Co., Ltd.)
Oh, Seung-Taek (OIKOS. Co., Ltd.)
Cho, Youngmin (Korea Railroad Research Institute)
Park, Duckshin (Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Railway / v.20, no.3, 2017 , pp. 365-373 More about this Journal
Abstract
This study proposes a newly developed dry washing method for removing pollutants such as total petroleum hydrocarbon (TPH) and oxidized iron from the surface of ballast gravel. A batch-type dry washing method showed a good performance in a previous study. In this study, a continuous-type dry washing system, instead of a batch-type system, was prepared to improve the efficiency of the system. A drier and a separator were also applied to this system as pre-treatment process, and the performance of this system was evaluated. In this experiment, blasting media was blasted on the polluted gravels through 12 nozzles by a pressure of $5-6kg/cm^2$ for 20-30 mins to remove TPH and oxidized iron. It was found to be possible to remove 80-90% of TPH and oxidized iron by using this system. Several ways to improve the performance were suggested in this study.
Keywords
Soil pollution; Soil remediation; Railroad ballast gravel; Dry washing; TPH;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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