生物离子交换用于从饮用水中去除天然有机物质
Karl Zimmermann1, Klaas Schoutteten2, Zhen Liu3
1Chemical and Biological Engineering, University of British Columbia, Vancouver, B.C., Canada.
Water research
|May 20, 2025
概括
离子交换 (IEX) 过器可以通过使用二次硫酸盐基IEX和耗尽后的生物去除,显著延长饮用水处理运行长度. 这种方法增强了自然有机物质的去除,为安全的水提供了低维护的解决方案.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 环境化学环境化学
背景情况:
- 饮用水的传统离子交换 (IEX) 过器在再生之间运行时间有限.
- 自然有机物 (NOM) 的去除是饮用水处理的一个关键方面.
- 了解初级IEX以外的机制对于优化过器性能至关重要.
研究的目的:
- 更新有关离子交换 (IEX) 饮用水过器的知识,重点是延长过器运行长度.
- 阐明自然有机物 (NOM) 移除的机制,包括二次IEX和生物移除.
- 为设计和操作生物IEX (BIEX) 过器提供见解,并预测其性能.
主要方法:
- 关于IEX和BIEX过器的现有文献的审查.
- 分析了来自三大洲34个案例研究的新发现和数据.
- 开发模型来预测DOC去除和估计基于运行条件和流入水质的过器运行长度.
主要成果:
- 基于的初级IEX提供了3,100个床位体积 (BV) 和69%的DOC去除.
- 基于硫酸盐的二级IEX延长了运行长度,增加了24,400个BV,删除了51%的DOC.
- 生物去除有助于5%-10%的DOC去除,其性能与[总阳离子]与[DOC]的比率有关.
结论:
- 运行经过化物耗尽的IEX过器,可以利用二次IEX和生物去除来进行扩展的NOM去除.
- 经验模型可以预测处理性能,并优化过器运行长度和运营费用 (OPEX).
- 对IEX机制的重新理解使各种系统规模的低维护,长期饮用水处理解决方案成为可能.
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