In-Situ Co-Removal of Turbidity and Hardness from Coal Mine Water Using an Enhanced Underground Reservoir: A Pilot-Scale Study.

ABSTRACT: Conventional sequential treatment processes for coal mine water with high turbidity and hardness are often associated with high energy consumption, large land footprint, and high chemical costs. To overcome these limitations, this study proposes a novel in situ technology based on an enhanced underground reservoir for synergistic coremoval of pollutants. A pilot-scale system integrating an automated dosing unit with a simulated underground reservoir was constructed and operated continuously for over 530 h using mine water from the Ordos mining area. The system demonstrated excellent treatment efficiency and stability, achieving average removal rates of 94.9% for Ca²⁺, 83.1% for Mg²⁺, and 90% for turbidity. Mechanistic analysis revealed that suspended coal powder parti

SUBMITTER: Li X 

PROVIDER: S-EPMC12750215 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature