Effect of sludge recirculation pattern on biological nutrient removal by a prototype IT/BF-MBR (inclined tube/biofilm-membrane bioreactor) and microbial population characteristics

2017 ◽  
Vol 124 ◽  
pp. 26-35 ◽  
Author(s):  
Chavalit Ratanatamskul ◽  
Juthamas Katasomboon
Keyword(s):  
Nutrient Removal ◽  
Membrane Bioreactor ◽  
Microbial Population ◽  
Population Characteristics ◽  
Biological Nutrient Removal ◽  
Inclined Tube

Efficient Biological Nutrient Removal in a Membrane Bioreactor Using Denitrifying Phosphorus Removal and Simultaneous Nitrification and Denitrification

2014 ◽  
Vol 507 ◽  
pp. 693-701
Author(s):  
Jiu Yi Li ◽  
Nian Peng Wu ◽  
Jin Li ◽  
Ai Min Wang ◽  
Yong Chen ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Phosphorus Removal ◽  
Membrane Bioreactor ◽  
Phosphorus Release ◽  
Biological Nutrient Removal ◽  
Return Flow ◽  
Denitrifying Phosphorus Removal ◽  
Bioreactor System ◽  
Removal Processes ◽  
The Impact

Biological nutrient removal (BNR) is generally integrated in municipal wastewater treatment plants to alleviate the impact of treated effluent on receiving watersheds. This paper studies the performance of BNR in a membrane bioreactor system consisting of anaerobic, anoxic, micro-aerobic and aerobic compartments treating a synthetic wastewater containing low organic matters. The membrane bioreactor system designed an anti-stream, stepwise return flow scheme to produce ideal conditions for the occurrence of simultaneous nitrification and denitification and denitrifying phosphorus removal processes. The proposed membrane reactor system has established higher biomass concentrations and ideal environments for biological nutrient removal processes, which results in high nutrient removal efficiencies treating low organic wastewaters. Four compartment configurations in the reactor system minimized the impact of oxidized nitrogen species in return flow on phosphorus release in the anaerobic tank and the anti-stream, stepwise return flow scheme encouraged the utilization of nitrate as the electronic acceptor in phosphorus uptake in the micro-aerobic tank. Denitrifying phosphorus removal and simultaneous nitrification and denitrification processes are the main mechanisms responsible for efficient nutrient removal. High phosphorus release activities and high phosphate concentration in the anaerobic tank make it is potentially feasible to recover phosphorus resource from wastewater.

Removal of ibuprofen from wastewater: comparing biodegradation in conventional, membrane bioreactor, and biological nutrient removal treatment systems

2008 ◽  
Vol 57 (1) ◽  
pp. 1-8 ◽  
Author(s):  
T.M. Smook ◽  
H. Zho ◽  
R.G. Zytner
Keyword(s):  
Nutrient Removal ◽  
Rate Constants ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Aerobic Biodegradation ◽  
Biological Nutrient Removal ◽  
Aeration Tank ◽  
Municipal Wastewater Treatment ◽  
Pharmaceutical Removal

Pharmaceuticals are continually being introduced into the influent of municipal wastewater treatment plants (WWTPs). Developing a better understanding of pharmaceutical removal mechanisms within the different treatment processes is vital in preventing downstream contamination of our water resources. In this study, ibuprofen, a popular over-the-counter pain reliever, was monitored by taking wastewater samples throughout the City of Guelph municipal WWTP. Greater than 95% of ibuprofen was found to be removed in the aeration tank, with aerobic biodegradation being the dominant mechanism. For comparison, first-order kinetics were used to quantify ibuprofen biodegradation in a conventional WWTP aeration tank and in a membrane bioreactor (MBR) pilot plant. The rate constants, kbiol, for the conventional tank and the MBR were determined to be (−6.8±3.3) L/g SS*d and (−8.4±4.0) L/g SS*d, respectively. These two rate constants were found to be statistically similar. Preliminary study of a biological nutrient removal pilot system also suggests that ibuprofen can be anaerobically degraded.

Biological nutrient removal using an alternating of anoxic and anaerobic membrane bioreactor (AAAM) process

Desalination ◽  
2008 ◽  
Vol 221 (1-3) ◽  
pp. 566-575 ◽  
Author(s):  
Li-Mei Yuan ◽  
Chuan-Yi Zhang ◽  
Yan-Qiu Zhang ◽  
Yi Ding ◽  
Dan-Li Xi
Keyword(s):  
Nutrient Removal ◽  
Membrane Bioreactor ◽  
Biological Nutrient Removal ◽  
Anaerobic Membrane Bioreactor

Biological Nutrient Removal and Fouling Phenomena in a University of Cape Town Membrane Bioreactor Treating High Nitrogen Loads

2013 ◽  
Vol 139 (6) ◽  
pp. 773-780 ◽  
Author(s):  
Alida Cosenza ◽  
Gaetano Di Bella ◽  
Giorgio Mannina ◽  
Michele Torregrossa ◽  
Gaspare Viviani
Keyword(s):  
Nutrient Removal ◽  
Membrane Bioreactor ◽  
Cape Town ◽  
Biological Nutrient Removal ◽  
High Nitrogen ◽  
Nitrogen Loads ◽  
University Of Cape Town

A novel nearly plug-flow membrane bioreactor for enhanced biological nutrient removal

AIChE Journal ◽  
2012 ◽  
Vol 59 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Fangang Meng ◽  
Zhongbo Zhou ◽  
Lei Li ◽  
Ruiyun Li ◽  
Xiaoshan Jia ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Membrane Bioreactor ◽  
Plug Flow ◽  
Biological Nutrient Removal

Microbial evaluation of activated sludge and filamentous population at eight Czech nutrient removal activated sludge plants during year 2000

2002 ◽  
Vol 46 (1-2) ◽  
pp. 471-478 ◽  
Author(s):  
O. Krhutková ◽  
I. Ruzicková ◽  
J. Wanner
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Microbial Population ◽  
Point Of View ◽  
Biological Nutrient Removal ◽  
Filamentous Microorganisms ◽  
Microthrix Parvicella ◽  
Year 2000 ◽  
The Relationship

The long-term project on the survey of filamentous microorganisms, which started in 1996, was finished in 2000 by the survey of eight Czech activated sludge plants with biological nutrient removal (BNR) systems. At all plants with enhanced biological nutrient removal, specific microbial population (mostly from the point of view of filaments occurrence), operational problems (presence of biological foaming, bulking) and plant operation were observed periodically and longer than 1 year. In our paper the relationship between the composition of activated sludge (especially filaments) consortia and modification of the process with nutrient removal is discussed. At the surveyed plants Type 0092 and Microthrix parvicella were identified as dominant Eikelboom filamentous types.

Comparison of recirculation configurations for biological nutrient removal in a membrane bioreactor

2008 ◽  
Vol 42 (6-7) ◽  
pp. 1651-1663 ◽  
Author(s):  
Cagatayhan Bekir Ersu ◽  
Say Kee Ong ◽  
Ertan Arslankaya ◽  
Patrick Brown
Keyword(s):  
Nutrient Removal ◽  
Membrane Bioreactor ◽  
Biological Nutrient Removal
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