TANWei,SONG Hao-yang,LUOYong,et al.Treatment of Acid Water Inflow in Closed Coal Mine by Unpowered Overlapping Drop-aeration Filter Bed[J].China Water & Wastewater,2023,39(4):86-89.
Treatment of Acid Water Inflow in Closed Coal Mine by Unpowered Overlapping Drop-aeration Filter Bed
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第4期
Page:
86-89
Column:
Date of publication:
2023-02-17
- Keywords:
- closed coal mine; acid water inflow; three-stage unpowered filter bed; overlapping drop-aeration
- Abstract:
- Aiming at the pollution control problem of closed coal mine water inflow, an economical and sustainable treatment technology of unpowered overlapping drop-aeration filter bed is designed and applied to the treatment projects of closed coal mine water inflow in Guangyuan, Sichuan Province, which has good treatment effects and social economic benefits. The design treatment capacity of the project is 11 664 m3/d. The effluent quality could meet the requirements in Emission Standard for Pollutants from Coal Industry (GB 20426-2006). After the mine water is processed, the pH of the treated water maintains at 6-9, and the concetrations of total iron, total manganese and suspended solids is 1.02 mg/L, 0.19 mg/L and 15.86 mg/L respectively. There is no addition of chemicals and no power costs during operation of project. This technology can be used to control the closed coal mine water inflow where the amount of water inflow is large, the site is relatively sufficient, and there is a certain elevation difference.
Last Update:
2023-02-17