School of Civil Engineering, Hefei University of Technology, Hefei 230009, China; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China.
School of Civil Engineering, Hefei University of Technology, Hefei 230009, China.
J Hazard Mater. 2021 Mar 15;406:124789. doi: 10.1016/j.jhazmat.2020.124789. Epub 2020 Dec 7.
Aromatic organoarsenicals are widely used in animal feeding operations and cause arsenic contamination on livestock wastewater and manure, thereby raising the risk of surface water pollution. Biological wastewater treatment processes are often used for livestock wastewater treatment. Organoarsenic removal and biotransformation under aerobic and anaerobic conditions, and the associated impacts have received extensive attention due to the potential threat to water security. The removal efficiency and biotransformation of organoarsenicals in biological treatment processes are reviewed. The underlying mechanisms are discussed in terms of functional microorganisms and genes. The impacts associated with organoarsenicals and their degradation products on microbial activity and performance of bioreactors are also documented. Based on the current research advancement, knowledge gaps and potential research in this field are discussed. Overall, this work delivers a comprehensive understanding on organoarsenic behaviors in biological wastewater treatment processes, and provides valuable information on the control of arsenic contamination from the degradation of organoarsenicals in biological wastewater treatment processes.
芳香有机胂广泛应用于动物饲养作业，导致牲畜废水中和粪便中的砷污染，从而增加地表水的污染风险。生物废水处理工艺常用于牲畜废水处理。由于对水安全的潜在威胁，有氧和厌氧条件下的有机胂去除和生物转化及其相关影响受到广泛关注。本文综述了生物处理过程中有机胂的去除效率和生物转化。从功能微生物和基因的角度讨论了其潜在机制。还记录了有机胂及其降解产物对微生物活性和生物反应器性能的影响。根据目前的研究进展，讨论了该领域的知识差距和潜在研究方向。总的来说，本工作全面了解了生物废水处理过程中有机胂的行为，并提供了有价值的信息，可用于控制生物废水处理过程中有机胂降解引起的砷污染。
