Department of Environmental Engineering and Science, Chia Nan University of Pharmacy and Science, Tainan 717, Taiwan.
Bioresour Technol. 2011 May;102(9):5325-30. doi: 10.1016/j.biortech.2010.11.116. Epub 2010 Dec 3.
This study investigated the feasibility and the treatment efficiency of a cyclic anoxic/aerobic two-stage MBR for treating polymeric industrial wastewater. The anoxic/aerobic hybrid MBR was operated without sludge withdrawal except sampling during the study. The results showed that the highest COD organic loading rate of 8.7 kg COD/m(3) day from bioreactor was obtained at phase 3. The system achieved 97% BOD(5) and 89% COD removal. It also revealed that 93% of COD removal was contributed by bioreactor at phase 3 and the similar results happened to phases 1 and 2. The highest TN and TKN removals for each phase were 60, 74, 80% and 61, 74, 81%, respectively and limited by nitritation step. SEM images of nascent and fouled membranes were offered to evaluate the cleaning method. The system was operated for 174 days, resulting in high degradation rate, flexibility towards influent fluctuations and limited sludge production.
本研究调查了循环缺氧/好氧两段式 MBR 处理聚合工业废水的可行性和处理效率。在研究过程中，除了取样外，缺氧/好氧混合 MBR 无需排泥。结果表明，在第 3 阶段，生物反应器的最高 COD 有机负荷率达到 8.7 kg COD/m3·d。该系统实现了 97%的 BOD5 和 89%的 COD 去除率。结果还表明，第 3 阶段生物反应器的 COD 去除率为 93%，第 1 阶段和第 2 阶段也出现了类似的结果。各阶段的最高 TN 和 TKN 去除率分别为 60%、74%、80%和 61%、74%、81%，分别受到硝化步骤的限制。提供了初生和污染膜的 SEM 图像，以评估清洗方法。该系统运行了 174 天，具有较高的降解率、对进水波动的灵活性和有限的污泥产量。
