一种新的磁吸附和电容脱离离技术,用于工业盐水废水回收
Shuo Wang1, Hongjie Wang2, Xinyuan Huang1
1Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China.
Water research
|April 2, 2025
概括
一个新的磁吸附脱离离和电容脱离离联系统 (MDI-CDI) 有效地从工业废水中去除盐和COD. 这种具有成本效益的技术提供了高效率和在线再生,没有二次污染.
科学领域:
- 环境科学与工程环境科学与工程
- 材料科学 材料科学 材料科学
- 水处理技术水处理技术
背景情况:
- 对于工业盐水废水,海水和水,迫切需要具有成本效益的海水淡化技术.
- 传统脱离离子技术的局限性包括吸附能力低,易受污染,再生困难和二次污染.
研究的目的:
- 开发和研究一种新的磁吸附脱离和电容脱离合系统 (MDI-CDI).
- 使用KCl溶液优化磁性去离子化 (MDI) 系统.
- 评估MDI-CDI系统对实际工业废水的性能.
主要方法:
- 制备磁缩石墨烯氧化物 (mrGO) 作为磁媒介.
- 使用叠加磁场构建一个合的MDI-CDI系统.
- 使用KCl溶液的优化研究,以确定盐类型,度和脱离离子效率之间的关系.
- 使用石化循环废水和催化裂变废水进行性能评估.
主要成果:
- 对于石化循环废水,MDI-CDI系统实现了96.9%的平均海水淡化率和84.8%的COD去除率.
- 一个三阶段的双重MDI系统显示了高的去离子效率,触媒裂解废水为79.3%,石化废水为84.0%.
- 叠加的磁场增强了去离子化机制,包括物理吸附,磁吸引,静电吸引和表面复杂化/沉积.
结论:
- 该MDI-CDI系统有效地减轻了膜污染,并允许在没有二次污染的情况下在线再生.
- 合系统以低能耗,高效率和稳定的性能运行.
- 这项技术为盐水废水的再生和利用提供了一种新的方法.
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