侧流无氧膜生物反应器系统用于能量正的污水处理
Chao Rong1, Weifu Yan2, Ying Song2
1Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong Special Administrative Region, China; School of Energy and Environment, City University of Hong Kong, Hong Kong Special Administrative Region, China.
Water research
|August 2, 2025
概括
这项研究引入了一种新的侧流无氧膜生物反应器 (AnMBR) 系统,该系统集成化学增强初级处理 (CEPT). 这种方法显著减少了甲的损失,并提高了废水处理的能源效率,即使在寒冷的气候中也是如此.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 废水处理 废水处理
背景情况:
- 无氧膜生物反应器 (AnMBR) 提供了能源中立的废水处理的潜力,但在主流应用中与甲损失和低温性能作斗争.
- 在AnMBR中直接处理污水会带来诸如溶解甲逃逸和降低在寒冷环境中的效率等挑战.
研究的目的:
- 开发和验证与化学增强初级处理 (CEPT) 集成的侧向AnMBR系统,以克服主流AnMBR的局限性.
- 改善能源回收,减少废水处理的运营挑战,特别是在低温条件下.
主要方法:
- 一个实验室规模的美索菲尔AnMBR被用CEPT缩的污泥从一个大规模的工厂养.
- 该系统以侧流模式运行,处理集中污泥而不是原始污水.
- 基于COD去除,甲转化,甲产量,溶解甲损失,膜面积和能量平衡来评估性能.
主要成果:
- CEPT-AnMBR系统从污水中消除了约65.7%的COD,并将51.4%转化为甲,产量为0.26 L-CH4/g-COD.
- 在侧流模式下运行大大减少了溶解甲的损失,使得产生的甲不到1%.
- 该系统显著减少了膜需求 (0.56 m2/m3污水/天),并实现了能量阳性 (0.61 kWh/m3污水).
结论:
- 集成的CEPT-AnMBR系统为节能废水处理提供了一个成功的"捕获+消化"战略.
- 这种方法提高了AnMBR技术用于主流污水处理的可行性,特别是在环境温度低的地区.
- 侧流配置有效地解决了溶解的甲损失,并提高了整体系统效率和能量回收.
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