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基于载体的颗粒与有氧颗粒污泥

Daoqi Wu¹, Xiaodi Hao¹, Yingying Yan¹

¹Sino-Dutch R&D Centre for Future Wastewater Treatment Technologies/Beijing Advanced Innovation Centre of Future Urban Design, Beijing University of Civil Engineering & Architecture, Beijing 100044, PR China.

|July 19, 2025

概括

基于载体的颗粒 (CBG) 为有氧颗粒污泥 (AGS) 提供了一种稳定的单一污泥替代品. 在压力下,CBG表现出优越的污染物去除和结构完整性,尤其是在压力下.

科学领域:

环境工程环境工程
微生物学微生物学
废水处理废水处理

背景情况:

有氧颗粒污泥 (AGS) 是有效的,但可能缺乏稳定性.
基于载体的颗粒 (CBG) 提供了类似的功能,增强了稳定性.
坚果 (NS) 为CBG发展提供了一种新型载体材料.

研究的目的:

开发一种使用坚果作为CBG的载体的单泥生物膜工艺.
评估CBG的形成,性能和稳定性.
将CBG与AGS进行比较,特别是在不利的条件下.

主要方法:

使用轻质有机坚果 (200-300μm) 作为载体.
通过缩短结算时间,采用了选择性浪费策略.
分析了生物膜形成,颗粒特征,污染物去除和微生物群落.

主要成果:

CBG很容易在坚果上形成,呈现出类似AGS的形态.
在CBG中,密度更高 (1028±1.5kg/m3),尺寸更大 (853μm),沉性更好 (SVI30=27mL/g).
实现了高的去除效率:COD (93%),NH4+-N (96%),PO43−-P (95%),具有显著的SND能力.

结论:

在废水处理方面,CBG是AGS的稳定和高效替代品.
增强的稳定性归因于更高的EPS含量和微生物聚合.
该过程非常稳健,特别是在低COD影响条件下,性能优于AGS.

关键词:

有氧颗粒污泥 (AGS) 是一种有氧颗粒污泥.基于载体的颗粒 (CBG)接口热力学接口热力学微生物社区的微生物社区.有机载体有机载体污染物去除污染物去除

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