无氧消化性能和微生物社区结构在试点规模上游无氧污泥毯 (UASB) 处理蒸厂废水
Yingdi Zhang1,2, Huijuan Sun1, Qi Huang1
1Department of Civil and Environmental Engineering, Faculty of Engineering, University of Alberta, Edmonton, Alberta, Canada.
概括
无氧消化有效地使用试点级反应堆处理蒸厂的废水,实现高清除率和生物气生产. 微生物分析证实,合成菌细菌和甲基生物是高有机负荷下稳定的性能的关键.
科学领域:
- 环境生物技术 环境生物技术
- 废水处理工程 废水处理工程
- 可再生能源生产可再生能源的生产.
背景情况:
- 高强度的工业废水,例如来自蒸厂的废水,带来了处理挑战.
- 无氧消化 (AD) 为废水处理和生物气回收提供了一个可持续的解决方案.
- 优化复杂废水的AD需要了解微生物动态和操作参数.
研究的目的:
- 评估试点规模上游无氧污泥毯 (UASB) 反应堆用于处理原始蒸废水的有效性.
- 评估混合蒸废水流对AD性能和稳定性的影响.
- 研究微生物群落结构及其在高有机负载率 (OLR) 处理中的作用.
主要方法:
- 一个225升试点规模的UASB反应堆在130天内运行.
- 混合蒸废水流的处理 (集中,消耗的有毒,低强度的工艺水).
- 监测化学氧气需求 (COD) 移除,甲产量和微生物群落组成 (包括古生物群落).
主要成果:
- 稳定的反应器性能在10.0公斤COD/m3/day的OLR下实现.
- 86%的高COD去除效率和超过71%的平均甲产量.
- 合成细菌和甲基生物的显著增加,甲基细菌主导着古老的种群 (55.8%).
结论:
- 该UASB反应器在处理蒸厂废水方面表现出高稳定性和高效率.
- 在高OLR条件下,合成细菌的合作关系对于AD在高OLR条件下取得成功至关重要.
- 这些发现支持了在蒸厂废水管理中大规模应用UASB的潜力.
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