Research on Acidic Environment Regulation Technology in Copper Sulfide Mine
The formation of acid mine drainage(AMD)and the mechanism of soil acidification during cop-per sulfide mining were analyzed.The hazards of acidic environment in copper sulfide mine were introduced.The methods of treating AMD by acid alkali neutralization,sulfide precipitation,surface passivation,microorgan-isms and simulated artificial wetlands,and treating acidic soil by neutralization,biochar,phytore-mediation and microorganisms were summarized.On this basis,a variety of comprehensive measures to treat the acidic environment of copper sulfide mine were proposed to improve the treatment effect,such as domestica-ting sulfate reducing bacteria with stronger adaptability to the environment,preparing alkalized biochar to effi-ciently regulate acidic soil,using copper sulfide acidic wastewater to prepare a protective layer of jarosite that could react on acidic environment,and the combination of jarosite protection layer,domesticated sulfate re-ducing bacteria,alkalized biochar and phytoremediation.
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