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从废水中开始用糖驱动的去化除法:微空气环境的影响

Guanglin Zhang¹, Weiguang Li¹, Donghui Li²

¹State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; School of Environment, Harbin Institute of Technology, Harbin 150090, China.

Journal of environmental management

|July 20, 2024

概括

这项研究引入了一种使用甘油去除废水中的的新方法. 短暂的微空气阶段增强了糖的转化,提高了处理厂中脱化去除 (DPR) 的效率.

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
生物技术是生物技术.

背景情况:

作为生物柴油副产品的甘油是污水处理的潜在碳来源.
低C/N比率的废水对营养物质的去除构成了挑战.
脱除 (DPR) 是营养管理的一个重要过程.

研究的目的:

开发和验证一种新的现场方法,用于用糖驱动的非化去除 (DPR).
调查短期微型有氧环境在启动糖驱动的DPR中的作用.
评估这种方法在试点级反应堆中的可行性和稳定性.

主要方法:

在有氧区内实施短期微型有氧阶段,以促进糖转化.
使用非化蓄积生物 (DPAO) 来去除.
在连续流量试点级反应堆中的验证,监测释放,去除效率和微生物群落.

主要成果:

无氧释放量增加,从每小时1.0毫克/升升到每小时2.5毫克/升升升.
发酵细菌和相关的功能基因的显著增加.
在稳定阶段实现了92.8%的去除效率和55.5%的DPR百分比.
微空气条件增强了发酵细菌,这对DPR稳定性至关重要.

结论:

甘油可以通过现场转化有效地驱动非化去除 (DPR).
一个短暂的微空气环境是启动和稳定糖驱动DPR的关键.
发酵细菌和PAO之间的协同相互作用对于过程稳定至关重要.
这种方法为现有废水处理厂的营养去除提供了可持续的解决方案.

关键词:

脱化除除的方法发酵细菌是一种发酵细菌.葡萄糖醇 (Glycerol) 是一种糖醇.低C/N比率的废水是废水.酸盐积累的生物体

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