Department of Architecture and Civil Engineering, West Anhui University, Lu'an, Anhui 237012, China.
Department of Architecture and Civil Engineering, West Anhui University, Lu'an, Anhui 237012, China; School of Civil Engineering, Hefei University of Technology, Hefei, Anhui 230009, China E-mail:
Water Sci Technol. 2021 Mar;83(6):1459-1469. doi: 10.2166/wst.2021.064.
Several water treatment techniques have been combined using the sequencing batch reactor with the membrane bioreactor for addressing water pollution. However, cleaning of the membrane is dependent on the approach involved as well as the operating conditions. In the present study, the sequencing-batch membrane bioreactor was used to treat real mixed municipal wastewater. The pollutant removal and membrane filtration performances were examined. The results show that the average removal rates of chemical oxygen demand (COD), total nitrogen, NH-N, total phosphorus, and turbidity were 90.75, 63.52, 92.85, 87.58, and 99.48%, respectively, when the system was in continuous operation for 95 days. The membrane had a significant effect on COD and turbidity removal and provided stable performances for nitrogen and phosphorus removal. By observing the appearance of the membrane modules before and after the cleaning operation, it was concluded that the deposited sludge and granular sediment on the membrane surface can be effectively removed by hydraulic cleaning. In addition, recovery of membrane filtration performance to 60% of that of a new membrane can be achieved. Furthermore, we found that different sequences and duration of cleaning have different effects on the recovery of membrane filtration performance.
已经结合使用序批式反应器和膜生物反应器的几种水疗技术来解决水污染问题。然而，膜的清洗取决于所涉及的方法和操作条件。在本研究中，使用序批式膜生物反应器处理实际混合城市废水。考察了污染物去除和膜过滤性能。结果表明，当系统连续运行 95 天时，化学需氧量（COD）、总氮、NH-N、总磷和浊度的平均去除率分别为 90.75%、63.52%、92.85%、87.58%和 99.48%。膜对 COD 和浊度去除有显著影响，对氮磷去除提供稳定性能。通过观察清洗操作前后膜组件的外观，得出结论，水力清洗可以有效去除膜表面的沉积污泥和颗粒沉淀物。此外，可以将膜过滤性能恢复到新膜的 60%。此外，我们发现不同的清洗顺序和持续时间对膜过滤性能的恢复有不同的影响。
