biofouling Articles

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Membrane biofouling mechanism in an aerobic granular reactor degrading 4-chlorophenol

by IWA Publishing  (Apr. 24, 2014)

The membrane fouling of an aerobic granular reactor coupled with a submerged membrane in a sequencing batch reactor (SBR) was evaluated. The fouling analysis was performed by applying microscopy techniques to determine the morphology and structure of the fouling layer on a polyvinylidene fluoride membrane. It was found that the main cause of ...

Integrated approach for biofouling control

by IWA Publishing  (Dec. 1, 2010)

Despite extensive research efforts, past and present strategies to control biofouling problems in spiral-wound nanofiltration and reverse osmosis membranes have not been successful under all circumstances. Gaining insight in the biofouling process is a first necessity. Based on recent insights, an overview is given of 12 potential complementary ...

Sea water desalination – potable water application case studies

by Genesis Water Technologies, Inc  (Apr. 20, 2015)

Challenge Facing challenges of clean water shortages in Tekoradi, Ghana with the burgeoning oil/gas sector in the area offshore, something had to be done to increase clean water supply to supply the growing needs of both the military base at Tekoradi and the surrounding community. Solution Knowing the water demands were increasing, Genesis Water ...

Drought Forces Push to Recycle, Reuse and Potential in Brackish Water for Oil & Gas Industry: Interview with BioLargo CEO

by Biolargo, Inc.  (May 4, 2015)

UPTICK Interview: BioLargo's AOS Filter Delivers Abundant Clean Water Even In Drought The headlines are full of discussion on water shortages and drought with few options consistently noted beyond the need to conserve and manage the precious resource. To gain perspective on the problem and explore viable solutions UPTICK Newswire interviewed ...

Engineered biofiltration for ultrafiltration fouling mitigation and disinfection by-product precursor control

by IWA Publishing  (Feb. 4, 2015)

A pilot-scale study was conducted to evaluate the impact of several biofiltration enhancement strategies in terms of organic removal to reduce disinfection by-product (DBP) formation potential and mitigate ultrafiltration (UF) fouling. Strategies included nutrient addition (nitrogen and phosphorus) to optimize metabolic degradation of organics, ...

Persistent Drought Challenges Fracking

by Biolargo, Inc.  (May 15, 2015)

 Feature Article CleantechIQ.com - Executive Commentary Freshwater has historically been the base fluid essential for fracking, sweeping, and oil sands recovery because it has been abundant and readily available, and because of its low cost. Unfortunately, all of that is now changing due to a longer than expected global drought, and the ...

Biofouling by bryozoans, Cordylophora and sponges in UK water treatment works

by IWA Publishing  (Jan. 1, 2011)

In recent years biofouling from native (bryozoans, sponges) and non-native (Cordylophora) animals has increased in UK water treatment works (WTW). A survey of six UK water companies and eight WTWs revealed that these taxa were more widespread and abundant than previously recognised. Primary problems related to the occlusion of underfloor nozzles ...

Application of the membrane fouling simulator to determine biofouling potential of antiscalants in membrane filtration

by IWA Publishing  (Mar. 1, 2010)

In treatment of groundwater with reverse osmosis, the applied antiscalant can significantly contribute to the formation of biofouling, especially when legislation enforces the use of biodegradable, phosphorous-free products. As an alternative to extensive piloting, the use of the membrane fouling simulator (MFS) is proposed here to assess the ...

The effect of mixed liquor suspended solids (MLSS) on biofouling in a hybrid membrane bioreactor for the treatment of high concentration organic wastewater

by IWA Publishing  (Jan. 1, 2011)

Biofouling is a crucial factor in membrane bioreactor (MBR) applications, particularly for high organic loading operations. This paper reports a study on biofouling in an MBR to establish a relationship between critical flux, Jc, mixed liquor suspended solids (MLSS) (ranging from 5 to 20 g L−1) and volumetric loading rate (6.3 kg COD m−3 h−1) of ...

Bioregeneration of Spent Ion-Exchange Resin Loaded with Nitrate/Perchlorate and Biofouling Removal

by Water Environment Federation (WEF)  (Oct. 13, 2007)

A new process has been developed that regenerates perchlorate/nitrate-contaminated ionexchange resins (IX) biologically without requiring the use of brine. The process consists of directly contacting perchlorate/nitrate-loaded IX resin with a perchlorate/nitrate-reducing microbial culture under anoxic/anaerobic conditions leading to conversion of ...

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