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http://dx.doi.org/10.9719/EEG.2020.53.3.235

Evaluation of Cu Removal from Mine Water in Passive Treatment Methods : Field Pilot Experiments  

Oh, Youn Soo (Mine Reclamation Corporation)
Park, Hyun Sung (Mine Reclamation Corporation)
Kim, Dong Kwan (Mine Reclamation Corporation)
Lee, Jin Soo (Mine Reclamation Corporation)
Ji, Won Hyun (Mine Reclamation Corporation)
Publication Information
Economic and Environmental Geology / v.53, no.3, 2020 , pp. 235-244 More about this Journal
Abstract
Copper (Cu), one of the main contaminants in the mine drainage from the closed mine area, needs to be removed before exposed to environment because of its toxicity even in the low concentration. In this study, passive treatment based field pilot experiments using limestone and compost media were conducted during 9 months for enhancing Cu removal efficiency of the mine water treatment facility of S mine located in Goseong, Gyeongsangnam-do in South Korea. The pH increase and Cu removal efficiency showed high value at Successive Alkalinity Producing System ( SAPS) > Reducing and Alkalinity Producing System (RAPS) > limestone reactor in a sequence. The compost media using in SAPS and RAPS contributed to raise pH by organic material decomposition with generating alkalinity, thus, Cu removal efficiency increased. Also, experimental results showed that Cu removal efficiency was proportional to pH increase, meaning that pH increase is the main mechanism for Cu removal. Moreover, Sulfate Reduction Bacteria (SRB) was identified to be most activated in SAPS. It is inferred that the sulfate reduction reaction also contributed to Cu removal. This study has the site significance in that the experiments were conducted at the place where the mine water generates. In the future, the results will be useful to select the more effective reactive media used in the treatment facility, which is most appropriate to remediate mine water from the S mine.
Keywords
mine water; field pilot experiment; SAPS; RAPS; Cu removal efficiency;
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Times Cited By KSCI : 2  (Citation Analysis)
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