A novel osmosis membrane bioreactor-membrane distillation hybrid system for wastewater treatment and reuse

作者：Nguyen Cong Nguyen; Hau Thi Nguyen; Chen Shiao Shing^*; Huu Hao Ngo; Guo Wenshan; Chan Wen Hao; Ray Saikat Sinha; Li Chi Wang; Hsu Hung Te

来源：Bioresource Technology, 2016, 209: 8-15.

DOI：10.1016/j.biortech.2016.02.102

• Osmosis membrane bioreactor (osmbr)
• Attached growth biofilm (AGB)
• Draw solution
• High charge
• Membrane distillation (MD)

A novel approach was designed to simultaneously enhance nutrient removal and reduce membrane fouling for wastewater treatment using an attached growth biofilm (AGB) integrated with an osmosis membrane bioreactor (OsMBR) system for the first time. In this study, a highly charged organic compound (HEDTA(3)) was employed as a novel draw solution in the AGB-OsMBR system to obtain a low reverse salt flux, maintain a healthy environment for the microorganisms. The AGB-OsMBR system achieved a stable water flux of 3.62 L/m(2) h, high nutrient removal of 99% and less fouling during a 60-day operation. Furthermore, the high salinity of diluted draw solution could be effectively recovered by membrane distillation (MD) process with salt rejection of 99.7%. The diluted draw solution was re-concentrated to its initial status (56.1 mS/cm) at recovery of 9.8% after 6 h. The work demonstrated that novel multi-barrier systems could produce high quality potable water from impaired streams.

• 出版日期2016-6