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在盐度应激下,在膜生物反应器中控制生物污染的海洋定量灭联盟

Weilong Song¹, Chengyu Wan¹, Ziang Ding¹

¹Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Ecology, Jiangnan University, Wuxi, 214122, China.

|July 27, 2025

概括

来自海洋的定量灭 (QQ) 细菌和PVA水凝珠有效控制盐膜生物反应器 (MBR) 中的生物污染. 这种新的方法克服了高盐度的挑战,将膜使用寿命延长了五倍.

科学领域:

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

背景情况:

质量灭 (QQ) 是一种有前途的策略,用于控制膜生物反应器 (MBR) 中的生物污染.
传统的QQ方法在盐水环境中失败,原因是抑制了QQ细菌.
高盐度在工业废水和海水中普遍存在,限制了QQ的应用.

研究的目的:

开发一个耐药的QQ联盟,以有效地控制盐水MBR中的生物污染.
为MBR应用创建稳定,耐 QQ 水凝珠.
为了评估新型QQ系统在高盐度压力下的性能.

主要方法:

从海洋环境中培养一种来自海洋的QQ联盟 (MQQ).
使用循环冷解方法制造具有度耐受性的聚乙烯醇 (PVA) 水凝QQ珠.
在MBR中应用MQQ-PVA珠子,处理盐水废水 (∼3.5%NaCl).

主要成果:

在1-5%的NaCl盐度中,MQQ证明了广泛的基同素乳 (AHL) 降解 (>80%).
MQQ表现出一种稳定,耐盐度的细菌群落,主要由海洋QQ物种主导.
MQQ-PVA珠子保持了结构完整性和高达5%的NaCl的QQ活性.
实现了MBF生物污染缓解,延长了膜服务周期的五倍 (17天与3-4天相比).

结论:

该研究建立了第一个具有度耐受性的海洋衍生QQ联盟,用于在盐度压力下控制MBR生物.
新的MQQ-PVA系统在高盐度条件下显著提高了MBR性能.
这种方法促进了QQ在盐废水处理中的应用,以及在海水淡化中的潜在使用.

关键词:

生物污染是一种生物污染.膜生物反应器是一个膜生物反应器.议员数量的灭.盐度压力是一种盐度压力.

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