EGU2020-6457, updated on 29 Dec 2022
https://doi.org/10.5194/egusphere-egu2020-6457
EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Effect of air stripping on acidity of mine drainage and the amount of neutralizing agent usage

YoungWook Cheong1, Dong-Wan Cho1, Won hyun Ji2, and Sanghyun Cho2
YoungWook Cheong et al.
  • 1Korea Institute of Geoscience and Mineral Resources, Daejeon, South Korea (ywc@kigam.re.kr)
  • 2MIRECO, Wonju, South Korea (solpami@mireco.or.kr)

Air striping on an acid mine drainage was conducted to measure dissolved CO2 concentration and acidity. The raw water and the disturbed water were neutralized to pH 7.5 and to compare the amount of lime added and sludge volume generated between two waters. The concentration of dissolved CO2 in the raw water was 49 mg/L and the total acidity was 1,018 CaCO3 mg/L. For disturbed water, the CO2 concentration was below 1 mg/L and the total acidity was 882 - 909 CaCO3 mg/L. This was the result of the release of dissolved CO2 into the air. As a result of the removal of CO2, 11% less lime was used and 85% less sludge generation occurred.

How to cite: Cheong, Y., Cho, D.-W., Ji, W. H., and Cho, S.: Effect of air stripping on acidity of mine drainage and the amount of neutralizing agent usage, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-6457, https://doi.org/10.5194/egusphere-egu2020-6457, 2020.