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Full-Text Articles in Social and Behavioral Sciences
Sludge Cycling Between Aerobic, Anoxic And Anaerobic Regimes To Reduce Sludge Production During Wastewater Treatment: Performance, Mechanisms, And Implications, Galilee Semblante, Faisal Ibney Hai, Huu H. Ngo, Wenshan Guo, Sheng-Jie You, William Price, Long Nghiem
Sludge Cycling Between Aerobic, Anoxic And Anaerobic Regimes To Reduce Sludge Production During Wastewater Treatment: Performance, Mechanisms, And Implications, Galilee Semblante, Faisal Ibney Hai, Huu H. Ngo, Wenshan Guo, Sheng-Jie You, William Price, Long Nghiem
Faisal I Hai
Alternate cycling of sludge in aerobic, anoxic, and anaerobic regimes is a promising strategy that can reduce the sludge yield of conventional activated sludge (CAS) by up to 50% with potentially lower capital and operating cost than physical- and/or chemical-based sludge minimisation techniques. The mechanisms responsible for reducing sludge yield include alterations to cellular metabolism and feeding behaviour (metabolic uncoupling, feasting/fasting, and endogenous decay), biological floc destruction, and predation on bacteria by higher organisms. Though discrepancies across various studies are recognisable, it is apparent that sludge retention time, oxygen-reduction potential of the anaerobic tank, temperature, sludge return ratio and loading …
Anaerobic Mbrs, Weijue Gao, Bao-Qiang Liao, Faisal Hai
Anaerobic Mbrs, Weijue Gao, Bao-Qiang Liao, Faisal Hai
Faisal I Hai
Anaerobic MBRs (AnMBRs) have been shown to be one of the most promising technologies for sustainable wastewater treatment. It offers several advantages over the aerobic MBRs, namely, requirement of no energy for aeration, low sludge production and energy resource. Compared to the conventional anaerobic processes, AnMBRs can maintain higher biomass concentrations, have higher treatment capacity, excellent effluent quality, and smaller footprint. Compared with the conventional anaerobic digestion, they are relatively robust to cope with variations in organic loading and inhibitory conditions due to complete retention of biomass by membranes. The AnMBR technology is now gaining acceptance by a wide range …