Department of Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung, 40132, Indonesia.
Chemical Engineering Department, Universitas Jenderal Achmad Yani, Jl. Ters. Jend. Sudirman, Cimahi, Indonesia.
Appl Microbiol Biotechnol. 2023 Jun;107(12):4079-4091. doi: 10.1007/s00253-023-12551-y. Epub 2023 May 13.
In this work, an embedded ends-free membrane bioreactor (EEF-MBR) has been developed to overcome the fouling problem. The EEF-MBR unit has a novel configuration where a bed of granular activated carbon is placed in the bioreactor tank and fluidized by the aeration system. The performance of pilot-scale EEF-MBR was assessed based on flux and selectivity over 140 h. The permeate flux fluctuated between 2 and 10 L.m.h under operating pressure of 0.07-0.2 bar when EEF-MBR was used to treat wastewater containing high organic matter. The COD removal efficiency was more than 99% after 1 h of operating time. Results from the pilot-scale performance were then used to design a large-scale EEF-MBR with 1200 m.day capacity. Economic analysis showed that this new MBR configuration was cost-effective when the permeate flux was set at 10 L.m.h. The estimated additional cost for the large-scale wastewater treatment was about 0.25 US$.m with a payback period of 3 years. KEY POINTS: • Performance of new MBR configuration, EEF-MBR, was assessed in long term operation. • EEF-MBR shows high COD removal and relatively stable flux. • Cost estimation of large scale shows the cost effective EEF-MBR application.
在这项工作中，开发了一种嵌入式无端膜生物反应器（EEF-MBR）以克服污染问题。EEF-MBR 单元具有新颖的配置，其中在生物反应器罐中放置了颗粒状活性炭床，并通过曝气系统使其流化。在 140 小时以上的时间内，根据通量和选择性评估了中试规模 EEF-MBR 的性能。当 EEF-MBR 用于处理含有高有机物的废水时，在操作压力为 0.07-0.2 巴的情况下，透过通量在 2 到 10 L.m.h 之间波动。COD 去除效率在运行 1 小时后超过 99％。然后，将中试规模的性能结果用于设计具有 1200 m.day 处理能力的大型 EEF-MBR。经济分析表明，当设定透过通量为 10 L.m.h 时，这种新型 MBR 配置具有成本效益。大型废水处理的估计额外成本约为 0.25 美元。m，投资回收期为 3 年。 关键点： • 评估了新型 MBR 配置 EEF-MBR 的长期运行性能。 • EEF-MBR 表现出高 COD 去除率和相对稳定的通量。 • 大规模的成本估算表明 EEF-MBR 的应用具有成本效益。
