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一个基于高矿化能力的合作战略,以快速有效地处理酸性矿井排水和回收资源

Dong Zhang¹, Xin He^2,3, Honghao Wang²

¹Taiyuan Bilan Hydraulic Engineering Design Co., Ltd., Taiyuan, People's Republic of China.

Environmental technology

|July 10, 2025

概括

这项研究引入了一种新的酸性矿井排水 (AMD) 处理方法,使用化学矿化来形成有价值的硫酸铁矿物质 (HSIM) 和层状双氧化物 (LDH). 这种方法有效地去除重金属和硫酸盐,使得资源从AMD污染中恢复.

科学领域:

环境科学环境科学
水处理技术水处理技术
矿物学是什么?矿物学是什么?

背景情况:

酸性矿井排水 (AMD) 是全球水质的一个重大挑战.
现有的AMD整治方法在离子回收和资源利用方面扎.
高度的铁,和硫酸盐离子是AMD的特征.

研究的目的:

开发一种新的AMD治疗方法,以有效的离子回收和资源利用.
研究化学矿化,以形成有价值的硫酸铁矿物质 (HSIM).
评估Ca-Al分层双氧化物 (Ca-Al LDHs) 在处理后中和的有效性.

主要方法:

用过氧化 (H2O2) 和二碳酸 (KHCO3) 进行AMD的化学矿化.
形成硫酸铁矿物质 (HSIMs),特别是施瓦特曼尼特和贾洛.
使用Ca-Al分层双氧化物 (Ca-Al LDHs) 进行后处理中和.

主要成果:

实现了98.5%的铁和29.2%的硫酸盐转化为有价值的HSIM.
HSIM的特定表面积为5.34 m2/g,适合重金属吸附.
实现了金属离子和硫酸盐水平低于250 mg/L (世卫组织指南) 的完全去除.

结论:

形成HSIM和中和Ca-AlLDH的联合方法为AMD治疗提供了一种新的方法.
这一过程提高了铁矿化率和AMD的资源利用率.
开发的方法快速,有效,并促进可持续的AMD管理.

关键词:

酸矿井排水系统酸矿井排水系统甲二氧化与二氧化的双层结构.硫酸氧化铁矿物矿物铁矿物矿物矿物化的矿化.回收资源的回收利用.

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