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零液体排放回收系统,最大限度地利用尾矿水的再利用
A Schwarz1, L Salas1, I Nancucheo2
1Civil Engineering Department, Universidad de Concepción, P.O. Box 160-C, Concepción, 4070386, Chile.
Journal of environmental management
|September 13, 2025
概括
本研究介绍了一种创新的零液体排放 (ZLD) 水回收系统,用于铜行业. 该ZLD系统最大限度地从尾矿中回收水,为传统方法提供了一种环保且具有成本效益的替代方案.
科学领域:
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
- 可持续的采矿 可持续的采矿
背景情况:
- 铜矿面临越来越多的水需求和尾矿的产生,由于矿石的品质下降和对能源转型技术的需求增加.
- 目前的策略,比如使用淡化海水,是能源密集型和昂贵的.
- 有效的水资源管理对于铜业的可持续性至关重要.
研究的目的:
- 为铜业制定和评估一项创新的水资源管理战略.
- 为了最大限度地利用零液体排放 (ZLD) 系统从尾矿中回收水.
- 与传统方法相比,评估拟议的ZLD回收系统的技术和经济可行性.
主要方法:
- 开发了一种集成的ZLD回收系统,将双极膜电透析 (BMED) 与反透 (RO),化学沉 (CP),离子交换 (IX),碳酸烧结和膜接触器 (MC) 结合起来.
- 评估了三个大型铜矿业务的系统性能.
- 建模了关键阶段 (CP,IX,RO),并通过实验验证了BMED阶段.
主要成果:
- 该ZLD回收系统回收化学品,生产淡水,产生酸/,并以自给自足的过程捕获二氧化碳.
- 通过建模和实验验证证明技术可行性.
- 经济可行性表明,实施成本在2.08美元至2.15美元/立方米之间,能源消耗8.68千瓦时/立方米,与淡化海水相竞争.
结论:
- 拟议的ZLD回收系统是铜矿用水管理的技术可行和经济可行的替代方案.
- 该系统提供了显著的环境效益,包括减少碳足迹,并将湿尾矿处置的风险降到最低.
- 它最大限度地利用水和化学物质回收,支持铜行业更可持续和循环经济.
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