在被动和空气化建筑湿地中,C-N-S循环的交织
Niha Mohan Kulshreshtha1,2, Karishma Chauhan3, Abhyudaya Singh1
1Department of Civil Engineering, Malaviya National Institute of Technology, JLN Marg, Jaipur, 302017, India.
World journal of microbiology & biotechnology
|August 13, 2024
概括
硫驱动的自脱 (SDAD) 显著促进了建筑湿地的去除. 这种涉及特定细菌的途径解释了气损失,并提供了可持续的废水处理好处.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理工程 废水处理工程
- 生物地质化学循环的过程
背景情况:
- 建筑湿地 (CWs) 中的微生物过程是复杂的,导致无法解释的损失.
- 硫循环在CW中的参与越来越多地被认为是去除的因素.
- 之前的研究突出了Anammox的贡献,促使进一步调查其他微生物途径.
研究的目的:
- 在各种建筑湿地类型中探索硫驱动的自无化 (SDAD) 途径.
- 在浅,深,被动和空气化CW中分析与SDAD相关的元基因组细菌群体.
- 量化SDAD对气化湿地中去除的贡献.
主要方法:
- 在不同的CW设计 (浅,深,被动,空气化) 中对细菌群体的元基因组学分析.
- 鉴定和量化参与硫氧化和脱的细菌.
- 在一个案例研究中,对SDAD途径的去除百分比的计算.
主要成果:
- 在深深的被动CW中,SDAD细菌 (例如Paracoccus,Arcobacter) 的数量比浅层CW更为丰富.
- 气化CW显示SDAD属的多样性更高,包括Thiobacillus和Beggiatoa.
- 参与硫化合物的暗氧化过程中的细菌在深层和空气化CW中得到丰富.
- 在空气湿地中,SDAD途径占去除的15-20%.
结论:
- SDAD路径在建造湿地内的去除中发挥着重要作用.
- 透气的CW有着多样化的微生物群落,有利于SDAD,提高了去除效率.
- SDAD通过减少污泥产生和堵塞,提供可持续的废水处理方法.
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