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化物诱导的压力形成了部分脱颗粒,以维持微生物代谢

Shenbin Cao¹, Jinxin Fang², Konrad Koch³

¹College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, PR China; National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, PR China; Chongqing Research Institute of Beijing University of Technology, Chongqing 401121, PR China.

|February 5, 2025

概括

部分脱 (PD) 工艺可以承受高达1.5g/L的化物冲击,但更高的度会损害活性. 微生物适应增强了PD颗粒对工业废水处理中的化物应激的弹性.

科学领域:

环境生物技术环境生物技术
污水处理污水处理污水处理
微生物生态学微生物生态学

背景情况:

来自光伏和半导体工业的富含的废水含有离子 (F).
化物对生物处理构成挑战,特别是对Anammox.的部分脱 (PD).
PD为无氧氧化 (Anammox) 提供了必需的酸盐.

研究的目的:

系统地研究化物应激对基于颗粒的PD工艺的影响.
了解在化物暴露下PD的弹性和适应性机制.
为优化化物污染环境中的生物废水处理提供见解.

主要方法:

使用批量测试和长期运行来评估PD性能.
分析包括酸盐与酸盐的转化率 (NTR),微生物群落结构和细胞外聚合物质 (EPS).
对基因表达 (nirBDS) 和代谢活性进行了监测.

主要成果:

PD活动对化物冲击高达1.5g/L的耐药性,但在2.0-3.0g/L时受损.
长期暴露于0.5g/L化物最初将NTR降低到50%,但它恢复到70%.
化物压力诱导了微生物的继承,有利于中等颗粒,并增加了EPS分泌,增强了颗粒的强度和活性.

结论:

PD颗粒通过微生物社区转移和EPS调制,表现出显著的化物应激弹性和适应能力.
增强的电子代谢和抗氧化反应减轻了化物诱导的氧化应激.
结果为使用PD过程管理化物影响的工业废水提供了关键的见解.

关键词:

化物应激压力是什么意思有颗粒的污泥污泥.大基因组机制的转基因组机制亚酸盐的积累亚酸盐的积累部分脱化部分脱化

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