微米级的零价值铁增强的矿驱动脱化生物过器的作用机制,用于和的去除
Xin Liu1, Xin Xin2, Wenyu Yang1
1School of Resources and Environment, Chengdu University of Information Technology, Chengdu, 610225, China.
Bioprocess and biosystems engineering
|November 13, 2023
概括
将微米级的零价值铁 (mZVI) 添加到矿生物过器中,可显著提高从二次废水中去除和的效果. 这种生物增量可以提高营养去除效率和微生物活动,从而有效地处理废水.
科学领域:
- 环境工程 环境工程
- 水处理技术 水处理技术
- 生物修复是一种生物修复.
背景情况:
- 二级废水处理通常需要先进的和去除方法.
- (FeS2) 驱动的脱生物过器 (DNBF) 显示出潜力,但可以进一步优化.
- 微微尺度的零价值铁 (mZVI) 在水处理中被探索其反应性质.
研究的目的:
- 研究mZVI在FeS2驱动的DNBF中改善和的去除机制.
- 为了评估与对照生物过器相比,用mZVI增强的DNBF的性能.
- 分析mZVI对微生物群落和生物过器内的生物地化学过程的影响.
主要方法:
- 开发两种DNBF:一种是FeS2 (DNBF-A),另一种是mZVI和FeS2 (DNBF-B) 的混合物.
- 基于酸盐- (NO3--N),总 (TN) 和酸盐- (PO43--P) 除去效率的性能评估.
- 动力分析,电子传输系统活动 (ETSA) 测量和高通量测序用于微生物社区分析.
主要成果:
- 与DNBF-A.P相比,DNBF-B实现了显著更高的去除效率:NO3--N的91.64%,TN的67.44%,PO43--P的80.26%.
- 动力分析显示,在DNBF-B.中,PO43--P和NO3--N的速率常数 (K) 增加.
- 添加mZVI增强了ETSA,促进了Fe (II) /Fe (III) 反氧循环,并丰富了Thiobacillus和Mesotoga等关键功能细菌.
结论:
- 微米级的零价值铁添加是一种非常有前途的策略,用于提高FeS2驱动的DNBF中的和的去除.
- mZVI通过促进微生物活动,氧化还原循环和特定的营养去除细菌的丰富性来提高生物过器的性能.
- 这种方法为二次废水处理提供了有效的解决方案,解决了关键的营养污染挑战.
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