Simultaneous biohydrogen production and starch wastewater treatment in an acidogenic expanded granular sludge bed reactor by mixed culture for long-term operation

2008 ◽  
Vol 33 (24) ◽  
pp. 7397-7404 ◽  
Author(s):  
W GUO ◽  
N REN ◽  
Z CHEN ◽  
B LIU ◽  
X WANG ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Mixed Culture ◽  
Granular Sludge ◽  
Biohydrogen Production ◽  
Term Operation ◽  
Starch Wastewater

Lessons Learned on Long-Term Operation of MBBR for Refinery Wastewater Treatment

2009 ◽  
Vol 2009 (15) ◽  
pp. 2479-2494
Author(s):  
Christian Cabral ◽  
Eoin Syron ◽  
Ray C. Asencio ◽  
Chandler Johnson
Keyword(s):  
Wastewater Treatment ◽  
Lessons Learned ◽  
Refinery Wastewater ◽  
Term Operation

scholarly journals Reactor performance and membrane fouling of a novel submerged aerobic granular sludge membrane bioreactor during long-term operation

2017 ◽  
Vol 9 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Jianfeng Li ◽  
Yanjun Liu ◽  
Xiaoning Li ◽  
Fangqin Cheng
Keyword(s):  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Sewage Treatment ◽  
Granular Sludge ◽  
Synthetic Wastewater ◽  
Aerobic Granular Sludge ◽  
Municipal Sewage ◽  
Reactor Performance ◽  
Term Operation

Abstract The aerobic granular sludge membrane bioreactor (AGS-MBR) has the potential for simultaneous carbon/nitrogen removal and membrane fouling mitigation. Most studies have focused on comparison of granular sludge MBR and flocculent sludge MBR in short-term tests using synthetic wastewater. In this study, two identical AGS-MBRs were developed, and the reactor performance and membrane fouling were examined systemically over 120 days for synthetic wastewater and municipal sewage treatment, respectively. Results showed that regular granules with good settling ability were developed and maintained throughout the experimental period. Regardless of the substrate type, AGS-MBR demonstrated a stable removal of carbon (85–95%) and nitrogen (50–55%) in long-term operation. In addition, the membrane fouling propensity is apparently lower in AGS-MBRs with no membrane cleaning for 4 months at a flux of 20 L m−2h−1. The filtration resistance analysis indicates that the main membrane resistance was caused by irreversible fouling in both of the reactors. Membrane foulant analysis indicates that proteins in extracellular polymeric substances are more prone to be attached by the membrane of AGS-MBRs because of their hydrophobic nature. This study shows that AGS-MBR is effective and stable for municipal sewage treatment and reuse during long-term operation.

METHODS: Long-term effect of nutrient supplementation of cassava wastewater on biohydrogen production by mixed culture

2011 ◽  
Vol 7 (2) ◽  
pp. 143-150 ◽  
Author(s):  
Valeria Reginatto ◽  
Franciele do Carmo Lamaison ◽  
Edna Regina Amante ◽  
Regina Vasconcellos Antônio
Keyword(s):  
Mixed Culture ◽  
Term Effect ◽  
Biohydrogen Production ◽  
Nutrient Supplementation ◽  
Long Term Effect ◽  
Cassava Wastewater

Long-term operation of microbial electrosynthesis cell reducing CO2 to multi-carbon chemicals with a mixed culture avoiding methanogenesis

2017 ◽  
Vol 113 ◽  
pp. 26-34 ◽  
Author(s):  
Suman Bajracharya ◽  
Rustiana Yuliasni ◽  
Karolien Vanbroekhoven ◽  
Cees J.N. Buisman ◽  
David P.B.T.B. Strik ◽  
...  
Keyword(s):  
Mixed Culture ◽  
Microbial Electrosynthesis ◽  
Term Operation

Baffled membrane bioreactor (BMBR) for advanced wastewater treatment: easy modification of existing MBRs for efficient nutrient removal

2005 ◽  
Vol 52 (10-11) ◽  
pp. 427-434 ◽  
Author(s):  
K. Kimura ◽  
Y. Watanabe
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Reaction Chamber ◽  
Municipal Wastewater Treatment ◽  
Term Operation ◽  
Constant Interval ◽  
Single Reaction

In this study, a novel membrane bioreactor (MBR) in which nitrification and denitrification simultaneously proceed in a single reaction chamber is proposed for advanced municipal wastewater treatment. Anoxic/aerobic environments are alternatively created in the proposed MBR by inserting baffles inside the membrane chamber. The performance of the proposed baffled membrane bioreactor (BMBR) was examined at an existing municipal wastewater treatment facility based on long-term operation. Although the procedure was simple, insertion of the baffles actually created the alternative anoxic/aerobic environments in the chamber at a constant interval and showed a great improvement in the nutrient removal. The insertion did not cause any adverse effect on membrane permeability. In this study, almost complete elimination of NH4+-N was observed while around 8mg/L of NO3−-N was detected in the treated water. The modification proposed in this study can immediately be applied to most existing MBRs and is highly recommended for more efficient wastewater treatment.

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