Submerged anaerobic membrane bioreactor for wastewater treatment and energy generation.

Compared with conventional wastewater treatment processes, membrane bioreactors (MBRs) offer several advantages including high biodegradation efficiency, excellent effluent quality and smaller footprint. However, it has some limitations on account of its energy intensive operation. In recent years, there has been growing interest in use of anaerobic membrane bioreactors (AnMBRs) due to their potential advantages over aerobic systems, which include low sludge production and energy generation in terms of biogas.

Ozone pretreatment for effective biodegradation of monoethylene glycol.

Monoethylene glycol (MEG) undergoes various stages during metabolic degradation pathways from acetaldehydes to acetic acid before converting to carbon dioxide and water in a degradation process. Sequential degradation of MEG through biological route obsesses higher retention time. Ozone is considered as an effective oxidant for MEG degradation but involves higher operating cost.

Biodegradation of monoethylene glycol on continuous bench scale reactor by bacterial consortia.

Wastewater containing monoethylene glycol (MEG) was investigated for biodegradation on a continuous bench scale bioreactor applying an activated sludge process. The bacterial consortia were prepared using three isolated bacterial strains and process conditions, viz. HRT, biomass concentration and air requirements were optimized to achieve efficient biodegradation.