Impact of flow regime on pressure drop increase and biomass accumulation and morphology in membrane systems

Vrouwenvelder, Johannes S.; Buiter, J.; Rivière, M.; Meer, W.G.J. van der; Loosdrecht, M.C.M. van; Kruithof, Joop C.

doi:10.1016/j.watres.2009.09.054

Cited by 88 publications

(53 citation statements)

References 41 publications

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“…Considering that the biofouling in this piloting study was developed at 10 m 3 /h feed flow rate for an individual pressure vessel, the linear cross flow velocity within the feed channel of the first RO element was about 0.13 m/s. The results correspond well with Vrouwenvelder, J. S. et al's work [19] on the impact of flushing on biofouling morphology, which was developed at lower flow velocity (0.06 m/s). Fig.…”

Section: Periodic Flushingsupporting

confidence: 90%

“…The latest innovation in fouling resistant RO designs [18] uses adhesion resistant membrane chemistry and low dP module designs to more effectively manage the fouling while not sacrificing the flux and rejection performance of the RO membrane. Periodic flushing has been shown in lab studies to strip portions of weakly adhered biofilm from the feed spacer fiber [19] and has also be modeled using fluid dynamics [20]. Understanding the synergy of using both low-dP RO elements and periodic flushing operating discipline has yet to be explored.…”

Section: David Publishingmentioning

confidence: 99%

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Piloting Study on Biofouling Control of Reverse Osmosis System in Steel Mill Wastewater Reuse

Yang¹,

Arrowood²,

Johnson³

2017

JESE-A

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Abstract:The biofouling of RO (Reverse Osmosis) system is one of the most common problems in highly contaminated demineralization and wastewater reuse system. The biological fouling occurs due to the bacteria growth and proliferation under nutritive environment, resulting in a dramatic increase of dP (differential pressure) in the RO system, which requires frequent system shutdown for cleaning. This paper discusses the effectiveness of low-dP RO element and periodic flushing on the biofouling scheme of industrial steel mill wastewater reuse system. The low-dP RO element is able to provide low RO system dP, which is expressed to be lower biofouling starting point during the industrial system operation. However, the periodic flushing utilizes fresh water to remove the biofilm deposit along with feed channel. The long term operation performance demonstrated strong caustic is effective in removing the biofilm and recovering RO system performance. It is experimentally validated that, in the case of a high biofouling environment, low-dP RO element and periodic flushing is able to extend the cleaning cycles by 36.6% and 11.4%, respectively. Meanwhile, a joint application of both methods is proven to improve the biofouling control and extend the cleaning cycle by 62.5%, as compared to standard RO technology.

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Section: Periodic Flushingsupporting

confidence: 90%

Section: David Publishingmentioning

confidence: 99%

Piloting Study on Biofouling Control of Reverse Osmosis System in Steel Mill Wastewater Reuse

Yang¹,

Arrowood²,

Johnson³

2017

JESE-A

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“…Understanding biofilm growth in porous media environment is relevant to several environmental and industrial processes such as biological wastewater treatment 10 , maintaining well-bore integrity in situations such as CO 2 capture 11 and plugging of pores in soil 12 .…”

Section: Introductionmentioning

confidence: 99%

Protocol for Biofilm Streamer Formation in a Microfluidic Device with Micro-pillars

Hassanpourfard

Sun

Valiei

et al. 2014

JoVE

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Several bacterial species possess the ability to attach to surfaces and colonize them in the form of thin films called biofilms. Biofilms that grow in porous media are relevant to several industrial and environmental processes such as wastewater treatment and CO 2 sequestration. We used Pseudomonas fluorescens, a Gram-negative aerobic bacterium, to investigate biofilm formation in a microfluidic device that mimics porous media. The microfluidic device consists of an array of micro-posts, which were fabricated using soft-lithography. Subsequently, biofilm formation in these devices with flow was investigated and we demonstrate the formation of filamentous biofilms known as streamers in our device. The detailed protocols for fabrication and assembly of microfluidic device are provided here along with the bacterial culture protocols. Detailed procedures for experimentation with the microfluidic device are also presented along with representative results. Video LinkThe video component of this article can be found at

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“…This may be linked to the short duration (10 weeks) of the test. Biofouling of nanofiltration membranes has been associated with a LPD-increase (Characklis and Marshall 1990, Vrouwenvelder et al, 2000, 2008 and/or a permeability decrease (Speth et al, 2000, Marconnet et al 2009Vrouwenvelder et al, 1998Vrouwenvelder et al, , 2009). Water permeability is a physical parameter which is related mainly to the material structure, to the porosity of the deposit, to its wettability, and to a lesser extent to its global quantity (Herzberg and Elimelech 2007).…”

Section: Discussionmentioning

confidence: 99%

Assessment of UV Pre-Treatment to Reduce Fouling of NF Membranes

Patrick¹,

Houari²,

Heim³

et al. 2011

Expanding Issues in Desalination

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Impact of flow regime on pressure drop increase and biomass accumulation and morphology in membrane systems

Cited by 88 publications

References 41 publications

Piloting Study on Biofouling Control of Reverse Osmosis System in Steel Mill Wastewater Reuse

Piloting Study on Biofouling Control of Reverse Osmosis System in Steel Mill Wastewater Reuse

Protocol for Biofilm Streamer Formation in a Microfluidic Device with Micro-pillars

Assessment of UV Pre-Treatment to Reduce Fouling of NF Membranes

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