Formation Mechanism of Acid Water and Treatment Method in Pyrite Mine: Example from Wuliba Pyrite Mine in Xixiang, Southern Shaanxi

HE Jun; ZHAO Qiang; YANG Jianqiang; LI Jinqian; LI Lin

doi:10.12401/j.nwg.2023171

Northwestern Geology > 2025 > 58(1): 219-230. > DOI: 10.12401/j.nwg.2023171

HE Jun，ZHAO Qiang，YANG Jianqiang，et al. Formation Mechanism of Acid Water and Treatment Method in Pyrite Mine: Example from Wuliba Pyrite Mine in Xixiang, Southern Shaanxi[J]. Northwestern Geology，2025，58（1）：219−230. doi: 10.12401/j.nwg.2023171

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Formation Mechanism of Acid Water and Treatment Method in Pyrite Mine: Example from Wuliba Pyrite Mine in Xixiang, Southern Shaanxi

1.
Shaanxi Mining Industry and Trade Co. Ltd, Xi’an 710054, Shaanxi, China
2.
China Coal Technology & Engineering Group Ecological Environment Technology Co. Ltd, Beijing 100013, China
3.
Shaanxi Geology and Mining Group Co., Ltd, Xi’an 710054, Shaanxi, China

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Received Date: October 09, 2022
Revised Date: August 25, 2023
Available Online: August 28, 2023

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Abstract

Abstract

Sulphate acid water is often produced in the mining process of pyrite mines, which not only corrodes pipelines and equipment, endangers workers’ health, but also seriously pollutes water system, affects industry, agriculture and fishery production. Therefore, it is one of the urgent tasks to solve the environmental problems of pyrite mines. Systematic analysis of mine environmental problems, in-depth understanding of the formation mechanism of acid water, and proposed one or more methods of ecological restoration and treatment programs according to local conditions are effective ways for ecological restoration of acid water in pyrite mines. Taking Wuliba Pyrite Mine in Xixiang County of South Shaanxi Province as an example, based on the analysis of the environmental status and ecological environment problems of mine cave, waste residue, surface water and ground subsidence, the paper analyzes the root of acid water, puts forward the comprehensive treatment technology of "surface water treatment + groundwater treatment + geological disaster treatment + ecological restoration + end treatment + environmental monitoring", and finally explores three treatment modes of mine cave modification filling, waste residue resource utilization and grouting reinforcement in subsidence area. It provides a scientific reference for the ecological restoration of mines in similar areas.
- acid mine drainage,
- formation mechanism,
- comprehensive treatment,
- Wuliba Pyrite Mine

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Formation Mechanism of Acid Water and Treatment Method in Pyrite Mine: Example from Wuliba Pyrite Mine in Xixiang, Southern Shaanxi

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Formation Mechanism of Acid Water and Treatment Method in Pyrite Mine: Example from Wuliba Pyrite Mine in Xixiang, Southern Shaanxi

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