Organic matter and total nitrogen removal from wastewater using a pilot-scale membrane-aerated biofilm reactor

Siriweera, Withanage B.; Yun-Je, Lee; Kobayashi, Minoru; Visvanathan, Chettiyappan

doi:10.1016/j.biteb.2021.100817

Cited by 9 publications

(2 citation statements)

References 21 publications

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“…Moreover, packing to mitigate membrane contamination due to the'transfer' of clogging to the carrier aligns with findings from prior studies. 29,38 Therefore, the results of the contrast experiment showed that the anticlogging ability of R2 with braided carriers was better than that of R1.…”

Section: Biofilm and Membrane Fouling Analysismentioning

confidence: 96%

Membrane Surface Woven Nylon Fillers Enhance Carbon and Nitrogen Removal of Membrane-Aerated Biofilm Reactor

Li,

Zheng,

Yan

et al. 2024

ACS EST Water

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The membrane-aerated biofilm reactor (MABR) is emerging as a promising solution for future wastewater treatment owing to its remarkable proficiency in achieving concurrent nitrogen and carbon removal. The research addressed a new type of MABR (R2) equipped with a polytetrafluoroethylene membrane-wrapped hollow nylon rope module that was constructed to improve the carbon and nitrogen removal of conventional MABR (R1). Uninterrupted operation lasting 120 days was conducted to compare the performance of R1 and R2 in treating simulated municipal wastewater with varying chemical oxygen demand (COD)/nitrogen (C/N) ratios. The results showed that R2 outperformed R1, exhibiting over 15.9% and 27.9% higher COD and TIN removal rates, respectively. The nylon fillers promoted biofilm formation, mitigated membrane pore clogging by the extracellular polymeric substances, and maintained a stable transmembrane pressure. R2 consistently maintained stable ammonia removal efficiency across different C/N ratios, while R1 exhibited a notable decrease at a high influent C/N ratio. Utilizing nylon carriers on membranes offered a cost-efficient and convenient method for modifying and preparing membranes for treating wastewater with broader C/N ratios and scaling up MABR applications.

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Section: Biofilm and Membrane Fouling Analysismentioning

confidence: 96%

Membrane Surface Woven Nylon Fillers Enhance Carbon and Nitrogen Removal of Membrane-Aerated Biofilm Reactor

Li,

Zheng,

Yan

et al. 2024

ACS EST Water

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show abstract

“…The authors affirm the technology's prospects for industrial use for the simultaneous removal of TN and NA. In addition to the biofilm on the membrane surface, one could also incorporate biocarriers for higher biomass yield, as in the study by Siriweera et al [27], who demonstrated the treatment of domestic wastewater by MABR with polyvinyl alcohol biocarriers to immobilize denitrifying bacteria. In the existence of PVA gel, all the performance parameters increase with an increasing HRT.…”

Section: Membranementioning

confidence: 99%

Advances in Nitrogen-Rich Wastewater Treatment: A Comprehensive Review of Modern Technologies

Omar,

Almomani,

Qiblawey

et al. 2024

Sustainability

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Nitrogen-rich wastewater is a major environmental issue that requires proper treatment before disposal. This comprehensive overview covers biological, physical, and chemical nitrogen removal methods. Simultaneous nitrification–denitrification (SND) is most effective in saline water when utilizing both aerobic and anoxic conditions with diverse microbial populations for nitrogen removal. Coupling anammox with denitrification could increase removal rates and reduce energy demand. Suspended growth bioreactors effectively treated diverse COD/N ratios and demonstrated resilience to low C/N ratios. Moving biofilm bioreactors exhibit reduced mortality rates, enhanced sludge–liquid separation, increased treatment efficiency, and stronger biological structures. SND studies show ≥90% total nitrogen removal efficiency (%RETN) in diverse setups, with Defluviicoccus, Nitrosomonas, and Nitrospira as the main microbial communities, while anammox–denitrification achieved a %RETN of 77%. Systems using polyvinyl alcohol/sodium alginate as a growth medium showed a %RETN ≥ 75%. Air-lift reflux configurations exhibited high %RETN and %RENH4, reducing costs and minimizing sludge formation. Microwave pretreatment and high-frequency electric fields could be used to improve the %RENH4. Adsorption/ion exchange, membrane distillation, ultrafiltration, and nanofiltration exhibit promise in industrial wastewater treatment. AOPs and sulfate-based oxidants effectively eliminate nitrogen compounds from industrial wastewater. Tailoring proposed treatments for cost-effective nitrogen removal, optimizing microbial interactions, and analyzing the techno-economics of emerging technologies are crucial.

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The membrane aerated biofilm reactor for nitrogen removal of wastewater treatment: Principles, performances, and nitrous oxide emissions

Feng

Zheng

et al. 2023

Chemical Engineering Journal

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Organic matter and total nitrogen removal from wastewater using a pilot-scale membrane-aerated biofilm reactor

Cited by 9 publications

References 21 publications

Membrane Surface Woven Nylon Fillers Enhance Carbon and Nitrogen Removal of Membrane-Aerated Biofilm Reactor

Membrane Surface Woven Nylon Fillers Enhance Carbon and Nitrogen Removal of Membrane-Aerated Biofilm Reactor

Advances in Nitrogen-Rich Wastewater Treatment: A Comprehensive Review of Modern Technologies

The membrane aerated biofilm reactor for nitrogen removal of wastewater treatment: Principles, performances, and nitrous oxide emissions

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