使用无氧膜生物反应器通过高盐度的性发酵从厨房废物泥中生产挥发性脂肪酸:对工艺性能和微生物继承的评估
Xiaolan Xiao1, Hongmei Hu2, Xingyao Meng3
1Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, PR China.
Bioresource technology
|March 13, 2024
概括
这项研究开发了一种厌氧膜生物反应器 (AnMBR),用于从厨房废物中产生挥发性脂肪酸 (VFA). 性发酵实现了高VFA产量,并抑制了不必要的甲产量.
科学领域:
- 环境生物技术 环境生物技术
- 废物管理 废物管理
- 生物化学工程 生物化学工程
背景情况:
- 厨房垃圾代表着一个重要的有机废物流,具有资源回收的潜力.
- 无氧消化过程可以将有机废物转化为有价值的产品,如挥发性脂肪酸 (VFA).
- 甲基生成通常与无氧系统中的VFA生产竞争,从而降低了整体效率.
研究的目的:
- 开发一个试点规模的无氧膜生物反应器 (AnMBR) 来从厨房废物中持续生产VFA.
- 研究性发酵在提高VFA产量和抑制甲基生成方面的有效性.
- 在VFA生产,回收和膜操作方面评估AnMBR系统的性能.
主要方法:
- 使用了一个试点规模的无氧膜生物反应器 (AnMBR).
- 采用性发酵条件来处理厨房废物泥.
- 监测VFA度,微生物群落组成和膜性能参数.
- 评估化学氧气需求 (COD) 恢复和氨- (NH3-N) 比率.
主要成果:
- 实现了高的VFA产量60.3g/L,主要由酸,酸和黄油酸 (>95%) 组成.
- 证明了高的VFA产量 (0.5g/g-COD影响),生产率 (6.0kg/m3/d) 和COD回收效率 (62.8%).
- 观察到COD_VFAs/COD_废水比率超过96.0%和COD_VFAs/NH3-N比率为192.5.5.
- 报告说,通过化学清洁和污泥排放减轻了膜污染,确保了持续的过.
结论:
- 在AnMBR中进行性发酵是从厨房废物中生产高质量的VFA的有效策略.
- AnMBR过程成功地抑制了甲基生成,从而导致有效的VFA恢复.
- 这项研究证实了AnMBR技术在将厨房废物价值化为有价值的VFA方面的潜力.
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