Faculty of Engineering and Information Technology, University of Technology, Sydney, Broadway NSW, Australia.
Water Sci Technol. 2010;61(2):513-9. doi: 10.2166/wst.2010.843.
In this study, short-term experiments were conducted with different configurations of membrane hybrid systems to treat biological treated sewage effluent containing refractory organic pollutants: (i) submerged hollow fiber microfiltration (SMF) alone; (ii) spiral flocculator (SF)-SMF without settling; (iii) SF-PAC-SMF without settling and (iv) SMF with magnetic ion exchange resin MIEX pretreatment. The results indicated that the pre-flocculation of SF could improve the mitigation of membrane fouling significantly even when the system was operated at a high membrane filtration rate. The transmembrane pressure (TMP) of SF-PAC-SMF only increased marginally (0.8 kPa over 8 hours). SF-SMF without the addition of powdered activated carbon (PAC) also took a relatively long duration for the TMP to increase. The TMP only increased by 2.5 kPa over 8 hours. The SF-PAC-MF system resulted in a high dissolved organic carbon (DOC) removal of more than 96%. When used as pre-treatment to submerged membranes, the fluidized bed MIEX contactor could remove a significant amount of organic matter in wastewater. This pre-treatment helped to reduce the membrane fouling and kept the TMP low during the membrane operation.
在这项研究中，采用不同膜混合系统配置进行了短期实验，以处理含有难处理有机污染物的生物处理污水：（i）单独浸没式中空纤维微滤（SMF）；（ii）无沉淀螺旋絮凝聚（SF）-SMF；（iii）无沉淀 SF-PAC-SMF 和（iv）MIEX 预处理 SMF。结果表明，即使在高膜过滤速率下运行，SF 的预絮凝也可以显著减轻膜污染。SF-PAC-SMF 的跨膜压力（TMP）仅略有增加（8 小时内增加 0.8 kPa）。未添加粉末活性炭（PAC）的 SF-SMF 也需要相对较长的时间才能增加 TMP。8 小时内仅增加了 2.5 kPa。SF-PAC-MF 系统实现了超过 96%的高溶解有机碳（DOC）去除率。当用作浸没式膜的预处理时，流化床 MIEX 接触器可以去除废水中大量的有机物。这种预处理有助于减少膜污染，并在膜运行过程中保持低 TMP。
