全面研究农业食品废水的高速低温无氧消化:工艺性能和微生物群落
Lara M Paulo1, Yu-Chen Liu2, Juan Castilla-Archilla1
1Microbial Ecology Laboratory, School of Biological and Chemical Sciences and Ryan Institute, University of Galway, Galway, H91 TK33, Ireland; Dairy Processing Technology Centre, University of Limerick, Analog Devices Building, Limerick V94 T9PX, Ireland.
概括
高速低温无氧消化 (LtAD) 有效地处理工业废水,即使在寒冷的条件下. 这种强大的工艺实现了超过80%的化学氧气需求消除和高质量的沼气生产.
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:
- 工业食品生产产生大量的废水,通常在低温 (<20°C) 下排放.
- 传统的高速无氧反应堆通常在介质性温度 (>30°C) 上运行,这给低温废水处理带来了挑战.
研究的目的:
- 为了证明工业废水的全面高速低温无氧消化 (LtAD) 的可行性.
- 分析LtAD生物反应器中的微生物社区结构,处理肉类加工和乳制品废水.
主要方法:
- 部署和运行两个全尺寸高速LtAD生物反应堆.
- 监测化学氧气需求 (COD) 清除效率和生物气产量 (CH4含量).
- 微生物社区分析,以评估潜在的生物机制.
主要成果:
- 两台LtAD生物反应器都实现了快速启动和高COD去除效率 (>80%).
- 始终生产高质量的生物气,含有>75%的CH4.
- 在长期运行 (6-12个月),包括冬季 (<12°C) 期间,观察到持续高性能 (>80%的COD去除).
- 一个有弹性的微生物群体,包括乙类甲体和水解/发酵细菌,支持稳定的运行.
结论:
- 高速LtAD是一种可行的,强大的技术,用于在低温下处理工业废水.
- LtAD为食品加工行业的零排放废水处理挑战提供了一个有希望的解决方案.
- 稳定的表现归功于一个有弹性和适应的微生物群体.
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