A mine drainage treatment system for AMD in remediation of metal sulfide mines

Hou, Shifeng; Cai, Jing-Yi; Tan, Kong Wai; Yang, Hong; Hu, Xin Yu; Wang, Zhe; Yuan, Xin

doi:10.31035/cg2018112

Cited by 3 publications

(3 citation statements)

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“…Other treatment systems have been designed based on biogeochemical technology, such as the study of AMD treatment by [53], which consisted of a five-unit linear treatment for iron removal, sulfate reduction (SRB), sulfur recovery (sulfur oxidizing bacteria, SOB), manganese removal (mineral adsorption with modified attapulgite) and purification. They obtained an effluent with a pH of 8.6 (from the initial 2.70), a 99% removal efficiency for Fe, Cu 2+ , Mn 2+ , and 33% for SO 4 2− .…”

Section: Some Other Recent Technologies Used For Amd Remediation and ...mentioning

confidence: 99%

Metal Pollution and Mining in the Iberian Pyrite Belt: New Remediation Technologies to Improve the Ecosystem Services of the River Basins

Bonnail

Vera²,

Blasco

et al. 2023

Water

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The highly metal-contaminated Odiel-Tinto River basin, located in the Iberian Pyrite Belt (IPB), has been the focus of many environmental studies as a natural lab for biodiversity and environmentally catastrophic scenarios and as a reference site for mining places with similar conditions. This study demonstrates the feasibility and effectiveness of two different technologies to recover ecosystems affected by acid mine drainage (AMD) in the area of IPB. The current study compiles results of two newest technologies for AMD remediation: passive remediation (dispersed alkaline substrate—DAS) and a new disruptive technology (Adiabatic Sonic Evaporation and Crystallization—ASE&C) that purifies the contaminated water, obtaining two by-products (high-quality water and metal conglomerates) that improve the general quality of the ecosystem including biodiversity by eliminating more than 90% of the contaminants from AMD and mining waters. The removal of contaminants, enhancement of AMD treatment efficiency, and offset operating costs were compared and analyzed for the different uses of the decontaminated effluents, including an old tailing pond failure, the Aznalcóllar mining spill. The efficiency of the removal of elements from the contaminated water is significant using both technologies, although the passive DAS does not still reach the international benchmark for some compounds (such as Fe, sulfates, and Mn); whereas ASE&C obtains distilled water fulfilling all the international benchmarks with conductivity values lower than 120 µS cm−1 or metal concentrations lower than µg/L. Both technologies are eco-friendly and cost-effective as a result of the generation of valuable by-products such as fresh water and metal conglomerates as potentially commercial products while remediating aquatic ecosystems impacted by mining activities.

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Section: Some Other Recent Technologies Used For Amd Remediation and ...mentioning

confidence: 99%

Metal Pollution and Mining in the Iberian Pyrite Belt: New Remediation Technologies to Improve the Ecosystem Services of the River Basins

Bonnail

Vera²,

Blasco

et al. 2023

Water

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“…Autores como Hou et al, (2019) definieron un sistema de tratamiento tipo reactor bioquímico (brc) compuesto de las siguientes fases: unidad de remoción de Fe, unidad de remoción de sulfato, unidad de remoción de sulfuros, unidad de remoción de manganeso y unidad de purificación con tanques de floculación y sedimentación intermedias entre las unidades.…”

Section: Reactores Bioquímicos O Bioreactores ( Biochemical Reactors Brc)unclassified

Mitos y realidades de la minería aurífera en Colombia

Avila¹,

Suárez²,

González³

et al. 2020

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Mitos y realidades de la minería aurífera en Colombia ResumenDe la mano de expertos nacionales, este libro analiza nueve de los mitos en torno a este tema en el país, relacionados con temas ambientales, sociales, jurídicos y económicos y, desde ahí, el libro explora la bibliografía existente que se encuentra en revistas científicas indexadas, estudios internacionales, documentos oficiales, normatividad y jurisprudencia, y lo complementa con la revisión de estudios de impacto ambiental, entrevistas a funcionarios y visitas de campo a proyectos mineros. Se espera que este aporte de la academia sea una oportunidad para generar una discusión respetuosa, imparcial y crítica sobre los argumentos a favor y en contra de la minería de oro en el país, que sin duda será un referente fundamental para todos aquellos interesados en conocer más sobre este sector.

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“…Coal mining and tunnel excavation can disrupt the natural karst hydrological processes and alter runoff patterns, leading to groundwater drainage, underground river cut-off, and changes in the natural hydrogeological flow system. This also affects groundwaterdependent vegetation, soil, as well as hydrology of surface water systems (Fu, 2019;Li et al 2021;Liu et al 2019;Hou et al 2019;Gong et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of coal mining and tunnel excavation on groundwater flow system in karst areas by modeling: A case study in Zhongliang Mountain, Chongqing, Southwest China

Li,

Kang,

et al. 2023

Journal of Groundwater Science and Engineering

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A karst groundwater system ranks among the most sensitive and vulnerable types of groundwater systems. Coal mining and tunnel excavation can greatly change the natural hydrogeological flow system, groundwater-dependent vegetation, soil, as well as hydrology of surface water systems. Abandoned coal mine caves and proposed highway tunnels may have significant influences on groundwater systems. This study employs MODFLOW, a 3D finite-difference groundwater model software, to simulate the groundwater system's response to coal mining and tunnel excavation impact in Zhongliang Mountain, Chongqing, from 1948 to 2035. The results show a regional decline in groundwater levels within the study area following mining and tunnel construction. The groundwater flow system in the study area evolves from the Jialing River groundwater flow system to encompass the Jialing River, Moxinpo highway tunnel, Moxinpo, and the Liujiagou coal mine cave groundwater flow systems between 1948 and 2025. With the completion of tunnel construction, the groundwater level at the top of the tunnel is gradually restored to the water level in the natural state. The model also predicts groundwater level variations between 2025 and 2035. The groundwater level will rise further initially, however, it may take about 10 years for the system to stabilize and reach a new equilibrium. In light of these findings, it is advised that changes in groundwater flow systems caused by tunnel construction should be modeled prior to the practical construction. This approach is crucial for evaluating potential engineering and environmental implications.

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A mine drainage treatment system for AMD in remediation of metal sulfide mines

Cited by 3 publications

References 0 publications

Metal Pollution and Mining in the Iberian Pyrite Belt: New Remediation Technologies to Improve the Ecosystem Services of the River Basins

Metal Pollution and Mining in the Iberian Pyrite Belt: New Remediation Technologies to Improve the Ecosystem Services of the River Basins

Mitos y realidades de la minería aurífera en Colombia

Effects of coal mining and tunnel excavation on groundwater flow system in karst areas by modeling: A case study in Zhongliang Mountain, Chongqing, Southwest China

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