在零价铁基磁流通式水处理系统中增强和维持去除
Yuchen Wu1, Yuyan Wang1, Delai Zhong2
1Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
Water research
|August 11, 2024
概括
一个使用零价铁 (ZVI) 线的新型磁反应堆可以从地下水中提取更好的. 这种具有磁性封闭功能的柱状反应器具有周期性超声波脱 (MCCR-PUD),可提供可持续和高效的处理,性能优于传统过器.
科学领域:
- 环境工程 环境工程
- 材料科学 材料科学 材料科学
- 水处理 处理水的方法
背景情况:
- 家庭处理污染的地下水通常使用零价铁 (ZVI) /沙过器.
- 由于表面被动化和堵塞,ZVI过器面临限制,降低了去除效率.
- 在受影响地区,菌病仍然是一个重大的公共卫生问题.
研究的目的:
- 开发和评估一个带有磁束的柱式反应堆,并配合定期超声波脱 (MCCR-PUD),以有效和可持续地去除.
- 研究去除机制和处理水的稳定性.
- 为了比较MCCR-PUD与传统ZVI/沙器的性能.
主要方法:
- 利用磁场将ZVI微粒自组装成稳定,多孔的电线在柱子反应堆内.
- 实施周期性超声波脱 (PUD),以使ZVI表面恢复青春.
- 评估去除能力,突破体积和阻塞性,使用加的合成地下水.
- 使用Mössbauer光谱,X射线吸收光谱和顺序提取来阐明的纳入机制.
主要成果:
- 与ZVI/沙过器相比,MCCR-PUD在10μg/L的突破率下显示了9.4倍的水处理能力 (7340 EBV).
- 反应堆的高度多孔结构 (87%的多孔度) 和ZVI电线形成防止了堵塞问题.
- 主要是结构性地纳入铁 (oxyhydr) 氧化物中,显示出显著减少的移动化 (<1%在28天内).
- 在复杂的合成地下水中,MCCR-PUD保持了强大的性能,处理了大约3700个EBV.
结论:
- MCCR-PUD提供了一种高效,可持续和耐堵塞的方法,用于从地下水中去除.
- 的结构性纳入铁 (oxyhydr) 氧化物增强了长期的稳定性,并减少了重新动员.
- 这项技术显示出作为受影响社区的分散处理平台的巨大潜力.
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