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通过规范常规活性污泥中的糖原积聚生物和积聚生物之间的竞争和合作,实现快速内生部分脱

Zhihao Peng¹, Qiong Zhang¹, Xiyao Li¹

¹National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.

Bioresource technology

|November 22, 2023

概括

在废水处理中实现稳定的内源部分脱 (EdPD) 通过管理积生物 (PAO) 迅速实现. 这一过程提高了碳节约,并支持anammox的应用,以有效地去除气.

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
生物地质化学循环的过程

背景情况:

内源性脱 (ED) 在无氧/有氧/无氧 (A/O/A) 过程中至关重要.
稳定的内源部分脱 (EdPD) 是碳节约和anammox应用的关键.
传统的活性污泥需要优化,以获得高效的EDPD.

研究的目的:

为了从传统活性污泥中快速实现EDPD.
研究EDPD发育过程中的微生物动态.
在A/O/A系统中平衡和去除效率.

主要方法:

利用无氧/无氧 (A/A) 模式来排出PAO.
实施A/O/A模式来规范PAO和GAO的竞争.
监控的化物转化率 (NTR) 和去除效率 (PRE).
分析了细菌群体的组成,重点是Competibacter和Accumulibacter.

主要成果:

在40天内实现EDPD,NTR从29.4%增加到82.8%.
竞争菌成为占主导地位的细菌,从0.5%增加到28.9%.
一个平衡的A/O/A过程实现了88.6%的PRE和67.7%的NTR,其中竞争菌和Accumulibacter占主导地位.
GAO和PAO平衡有助于通过anammox进行先进的去除.

结论:

在A/A模式下驱逐PAO是快速EdPD的有效策略.
在A/O/A模式下调节PAO和GAO,平衡了营养物质的去除.
开发的EdPD工艺支持通过anammox.有效地去除.

关键词:

传统的活性污泥是一种常规的活性污泥.内生局部部分脱化亚酸盐的转化率是多少公司的PAOs和GAOs.含量限制的含量限制

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