The treatment effect of acidic waste water of the flue gas absorbed, neutralized by crude calcium carbonate, was studied by crystal membrane distillation.

采用天然碳酸钙中和烟气吸收酸性废水，研究中空纤维结晶膜蒸馏技术对中和后废水处理的效果。

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Discharge quantity of acidic sulphide waste water is 30% of traditional technology and final product is high quality.

产品质量达到国内外同类产品的标准，含硫废水(呈酸性)排放量为传统工艺的30%。

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Because of the deficiency of conventional method for dealing with acidic waste water containing Radium and ion of heavy metal, we optimize the conventional method.

针对含镭及重金属离子酸性废水处理常规方法的不足，对处理工艺设备进行优化设计，即采用污渣循环法处理含镭及重金属离子酸性废水。

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Besides the unsightly effects that many mines have on the landscape, they usually churn out vast quantities of toxic waste in the form of acidic drainage-water and tailings the fine particles of rock produced when ore is ground down to release the minerals it contains.

ECONOMIST: Mine pollution

Coal waste mountains exposed to air started churning out acidic water, polluting groundwater and streams.

FORBES: Fracking With Bad Water