嵌入Fe(0) 电凝在一个生物活性As(III) 氧化过床中
Mrinal Roy1, Erik Kraaijeveld1, Jink C J Gude2
1Water Management Department, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628CN Delft, the Netherlands.
Water research
|February 8, 2024
概括
这项研究提出了一种新方法,通过将铁电凝系统 (FeEC) 嵌入沙过器中,从地下水中去除. 这种综合方法有效地去除了石和酸盐,为污染提供了具有成本效益的解决方案.
科学领域:
- 环境工程环境工程
- 水处理技术水处理技术
- 无机化学 无机化学
背景情况:
- 地下水的污染对健康构成重大风险,包括癌症.
- 传统的去除方法通常需要化学氧化剂和多个处理步骤.
- 在沙子过器中,生物氧化化 (As(III)) 到化 (As(V)) 是有效的,但需要随后去除As(V).
研究的目的:
- 开发和评估一种用于同时生物氧化和电化学去除地下水中的的综合系统.
- 为了评估嵌入式铁电凝系统 (FeEC) 在生物沙过器中去除的性能.
- 将嵌入式FeEC系统的效率和能耗与传统方法进行比较.
主要方法:
- 在沙子过床内嵌入铁电凝系统 (FeEC),用于生物氧化和去除.
- 运行FeEC系统在沙子矩阵和过器上游物中进行比较分析.
- 评估不同操作条件下的去除效率 (As(III) 和As(V)) 和能源消耗.
主要成果:
- 嵌入式FeEC系统实现了81%的As(III去除,超越了超物中的FeEC (67%).
- 当FeEC嵌入沙子过器时,观察到与As (III) 和As (V) 相似的去除效率.
- 沙子矩阵的能量消耗较高 (14Wh/m3),而不是上游水 (7Wh/m3),但随着沉物深层透,效率增加.
结论:
- 将FeEC系统嵌入沙过器中是一种可行且有效的方法,用于去除地下水中的.
- 这种综合系统利用生物氧化和电化学去除在单个单元内,消除了对化学氧化剂的需求.
- 这种新的方法为处理被污染的地下水提供了成本高效和简化的解决方案.
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