biofouling Articles

156 Results found
  • Keyword: biofouling ×

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 ...

Biofouling Plant Performance

by MASAR Technologies, Inc.  (Jun. 17, 2015)

The City of Clifton, Colorado, designed and built a 2.4 million gallons per day nanofiltration plant to treat Colorado river water and supply the city and nearby areas with drinking water. The plant was partially started in September 1997 with NF Skid 1. It was shutdown in the Spring of 1998 due to low river TDS. The plant was re-started in August ...

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 ...

Biofouling & Biomonitoring: Mussels help keep Mussels at Bay

by DNV GL Energy  (Jan. 1, 1999)

Untitled Document Dykes, shipwrecks, junk and just about anything else submerged in water is soon colonized by aquatic animals, particularly mussels. Unless something is ...

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 ...

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 ...

Electrochlorination system: a unique method of prevention of biofouling in seawater desalination

by Inderscience Publishers  (Sep. 10, 2008)

Desalination plants require huge volumes of seawater for the generation of fresh water. Seawater contains large amounts of microbiological fluids which, when passed through the piping system, form biofouling in the inner surface of the pipeline, which results in the reduction of the flow rate of water without proper chemical treatment. Chlorine is ...

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 ...

Comparison of Biofouling Control in a Membrane Bioreactor Via Two Coarse Bubble Aeration Cycles

by Water Environment Federation (WEF)  (Oct. 21, 2006)

In the membrane bioreactor (MBR) process, coarse bubble aeration is used to scour the surface of the membranes to help control biofouling. Energy required for coarse bubble aeration represents a significant fraction of the total power demand for these systems. To reduce this demand, MBR systems manufactured by Zenon Environmental Inc. operate with ...

Need help finding the right suppliers?

Let the XPRTs do the work for you