Bio-entrapped membrane reactor for organic matter removal and membrane fouling reduction

Ng, Kok-Kwang; Wu, Congyi; You, Li-Yuan; Kuo, Chin-Sheng; Lin, Cheng‐Fang; Hong, Andy; Yang, Peidong

doi:10.1080/19443994.2012.708538

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…In addition, the period between membrane cleanings was prolonged from 60 to 140 days [227]. Ng et al [228] developed the bio-entrapped membrane reactor (BEMR) packed with bio-ball carriers and operated nearly 4 times longer than conventional MBR before reaching critical TMP, thus, contributing to reduced chemical cleaning frequency [229]. Rafiei et al [224] demonstrated that a bio-entrapped MBR with cells entrapped in polyurethane foam provided better results with regard to membrane fouling and removal efficiencies of COD, ammonium and phenol, when compared to biofilm and conventional MBRs.…”

Section: 4mentioning

confidence: 99%

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Krzemiński

Leverette

Malamis

et al. 2017

Journal of Membrane Science

366

156

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Membrane bioreactor (MBR) technology is considered a well-established, mature technology with many full-scale plants around the world treating municipal and industrial wastewater. However, membrane fouling and energy consumption still remain serious obstacles and challenges in the wider spread of the MBR technology. Therefore, considerable research and development efforts are still underway. Recent developments are primarily focused on aspects related to energy reduction, fouling control and novel configurations for enhanced process performance. This review addresses the recent work on the above mentioned aspects and it discusses the overall life cycle of MBRs and the market prospects for MBR technology. Novel MBR configurations and integrations with other technologies are also reviewed. Finally, the challenges that need to be addressed in order to facilitate market penetration of MBR technology are highlighted.

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Section: 4mentioning

confidence: 99%

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Krzemiński

Leverette

Malamis

et al. 2017

Journal of Membrane Science

366

156

View full text Add to dashboard Cite

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“…The NH þ 4 -N concentration profile is very similar to the COD profile as NH þ 4 -N is nitrified in the presence of DO; it follows that nitrifying bacteria are distributed only near the surface of the EMMC ball where DO is available. In the presence of DO and substrates, the EMMC carriers have good contact with them at the outer region, where nitrification process is very active [12]. Our previous experimental results showed that the pH stayed constant around 7.1-7.4 at the influent side and 6.6-6.9 at the effluent side.…”

Section: Resultsmentioning

confidence: 84%

“…Therefore, the mass transfer resistance of solutes is greater at the boundary layer that limits the overall mass transfer. Wang et al [10] and Yu et al [11] studied simultaneous carbon and nitrogen removal from wastewater of different compositions, and Ng et al [12] operated bio-entrapped membrane operation in different modes to treat wastewater of the food and beverage industry. The biochemical processes occurred at the inter macrospores between the carrier balls and the intra microspores within the carrier.…”

Section: Conceptual Modelmentioning

confidence: 99%

Modeling organics biodegradation and ammonia nitrification by entrapped mixed microbial cell carriers

Liu

et al. 2014

Desalination and Water Treatment

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A B S T R A C TEntrapped mixed microbial cell (EMMC) process offers good capability to remove organics and nitrogen compounds from wastewater in a single aerobic chamber. This research modeled quantitatively the hydraulic characteristics and biochemical process of immobilized activated sludge process (ASP) for the removal of COD and NH þ 4 -N, providing insights to mass and oxygen transfer limitation in EMMC spherical carriers. Based on the conceptual kinetic model and previous experimental results, hydraulic and reaction rate constants were determined for both COD degradation and NH þ 4 -N nitrification with the EMMC carrier. The dissolved oxygen (DO) distribution profile along the radius of EMMC carriers was also simulated. The depletion of DO in the EMMC carrier was very rapid resulting from COD removal and ammonia nitrification given the mass transport condition of DO. The anoxic/anaerobic zone developed in the EMMC carrier within 1 cm from its external surface in contact with the bulk water phase. Beyond this anoxic/anaerobic boundary, denitrification of nitrate occurred utilizing the residual COD. The efficiency of organics biodegradation and nitrification was not influenced by the thickness or diameter of the EMMC carriers. EMMC carriers of 1 cm in thickness supported removal of organics by biodegradation and nitrogen compounds via nitrification and denitrification processes. The EMMC carrier enabled combined nitrification and denitrification in the aerobic chamber, which signified the enhancement of a traditional ASP to an anoxic/oxic (AO) or anaerobic/anoxic/oxic reactor system via the EMMC carrier in an aeration tank.

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Bio-entrapped membrane reactor and salt marsh sediment membrane bioreactor for the treatment of pharmaceutical wastewater: Treatment performance and microbial communities

Shi

Yao

et al. 2014

Bioresource Technology

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Bio-entrapped membrane reactor for organic matter removal and membrane fouling reduction

Cited by 8 publications

References 24 publications

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Membrane bioreactors – A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects

Modeling organics biodegradation and ammonia nitrification by entrapped mixed microbial cell carriers

Bio-entrapped membrane reactor and salt marsh sediment membrane bioreactor for the treatment of pharmaceutical wastewater: Treatment performance and microbial communities

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