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通过基于生物膜的酸性有氧消化过程,快速废物激活泥减少和稳定

Xi Lu¹, Zhiyao Wang¹, Zheng Kong¹

¹Australian Centre for Water and Environmental Biotechnology (ACWEB, formerly AWMC), The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia.

Environmental science & technology

|January 15, 2026

概括

一种新的生物膜工艺通过产生酸,在不到两天的时间内稳定了废水污泥. 这种方法显著减少了病原体和挥发性固体,为小型废水处理厂提供了有效的解决方案.

科学领域:

环境工程环境工程
微生物学微生物学
生物技术是生物技术.

背景情况:

空气消化是小型到中型废水处理厂 (WWTP) 污泥稳定标准.
长时间的保留时间 (15-30天) 限制了过程的强化.
化可以增强消化,但在短的液压保留时间 (HRT) 中,化剂会丢失.

研究的目的:

开发一种基于生物膜的解决方案,用于快速稳定污泥.
利用现场的自由酸 (HNO) 生产来加快废物活性污泥 (WAS) 的稳定.
为了在短HRTs时保留消化器内的化细菌.

主要方法:

经营两台实验室规模的污泥消化机一年多.
在一个消化器中采用基于生物薄膜的方法,在控制中采用悬浮污泥方法.
分析了病原体水平,挥发性固体 (VS) 减少,水解速率,VS可降解性和微生物群落.

主要成果:

在1.75天HRT内达到A类生物固体对病原体减少的标准.
达到了0.87±0.13kg/m3/d的高VS减少率.
比悬浮污泥消化器,生物膜消化器显示出更高的水解率 (0.58d-1vs0.51d-1) 和VS可降解性 (31%vs21%).
生物膜丰富了氨氧化剂和耐酸异构体.

结论:

基于生物膜的过程显著加快了WAS稳定.
这种方法在短HRTs时有效降低病原体水平和挥发性固体.
该过程是小规模的水泥水处理厂的一种有前途的污泥管理策略.

关键词:

耐酸氨氧化剂是一种耐酸氨氧化剂.生物固体是一种生物固体.自由的酸是什么意思移动床生物膜反应堆的移动床生物膜反应堆处理未加厚的污泥.

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