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密集消毒对WWTP中和的去除的影响

Yixing Zhang¹, Xueran Lin², Tang Xia²

¹School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.

The Science of the total environment

|January 27, 2024

概括

废水中的含量增加会对和的去除产生负面影响. 高度显著降低了清除效率,并抑制了关键的微生物基因,影响了废水处理厂 (WWTP) 的运行.

科学领域:

环境微生物学环境微生物学
水处理技术水处理技术.
废水管理废水管理

背景情况:

随着COVID-19大流行,消毒的使用增加,导致市政废水中的有效度更高.
较高的含量对废水处理厂 (WWTP) 的生物营养去除过程的影响需要进行系统的调查.

研究的目的:

系统地分析活性对WWTP中和去除的影响.
确定影响微生物群落和对营养物质去除负责的代谢活动的度值.

主要方法:

来自五个全尺寸的WWTP的活性污泥被用来评估在不同活性度下移除营养的效率.
逆转录定量聚合酶链反应 (RT-qPCR) 用于分析参与循环的关键基因的表达.

主要成果:

在活性度为5.0 mg/g-SS及以上时,去除和的效率显著下降.
化,脱化和吸收活动被抑制,在25.0 mg/g-SS时完全失去活动.
高水平 (≥5.0 mg/g-SS) 增加了细胞死亡比例,并抑制了关键代谢基因 (nxrB,nirS,nirK,narG) 的转录.

结论:

活性的度超过5.0 mg/g-SS显然会损害WWTP中的生物和的去除.
微生物群落对的明显敏感性凸显出需要仔细管理消毒剂水平的必要性.
调查结果为WWTP决策提供了关键数据,以减轻影响度增加的影响.

关键词:

有活性的活性.脱化过程中的脱.功能性基因是指功能性的基因.在化过程中,化清除的方法是去除.废水处理厂 (WWTPs) 是一个废水处理厂.

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