biofouling Articles

133 Results found
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Bio-fouling control on marine vessels with ozone

by Primozone Production AB  (May 10, 2012)

A recent pilot study on how to control accumulation of marine organisms on heat exchangers of marine vessels show that applying ozone is both effective and sustainable. Large economic impact Marine bio-fouling, or accumulation of marine organisms on heat-exchangers for cooling systems, is a challenge in the maritime sector and has both an economic ...

Effect of sludge retention time on membrane bio-fouling using different type and pore size of membranes in a submerged membrane bioreactor

by IWA Publishing  (Dec. 3, 2012)

The objective of this study was to investigate the influence of sludge retention time (SRT) on membrane bio-fouling. An activated sludge reactor was operated at three different SRTs (10, 30, and 50 days). Submerged membrane experiments were performed when the mixed liquor suspended solids (MLSS) concentration reached the steady state conditions. ...

Controlling Scale Deposition and Industrial Fouling

by Scalewatcher North America Inc  (Nov. 28, 2012)

It costs US industry billions of dollars a year to control and remove the limescale that builds up in industrial equipment such a heat exchangers, evaporative coolers, boilers, chillers and other water fed equipment. Oil wells, for example, face significant scaling problems from the highly mineralized water that are extracted with the ...

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 ...

Industrial cooling water fouling by Dreissenidae

by Aquator B.V.  (Feb. 28, 2012)

Together with the cooling water, a wide range of living organisms is entrained into cooling water systems, which can readily colonise the available surfaces in the system. Growth conditions in the cooling water system often are ideal for sessile organisms: the steady water flow assures abundance of nutrients and oxygen, while access for predators ...

Physico-chemical characterisation versus in situ micro-structural characterisation of membrane fouling in membrane bioreactors

by IWA Publishing  (Jan. 1, 2011)

Fouling characteristics of aerobic submerged membrane bioreactors were analysed under two different membrane materials. Polyethersulfone (PES) membranes were found to foul faster at sub-critical flux than polyolefin (PO) membranes. Physico-chemical characterisation, by means of comparison of extracellular polymeric substances (EPS) and soluble ...

RNLI Poole - Scarecrow Bio-Acoustic System installed at the RNLI in Poole

by Scarecrow Bio-Acoustic Systems Limited  (May 4, 2012)

Formed in 1824 by 'pulling together' the disparate sea rescue organisations based around the coast of Britain, the Royal National Lifeboat Institution is now one of the most efficient and highly respected bodies of its kind anywhere in the world. Such is its professionalism and profile that it is a complete surprise to many that it remains a ...


by Scalewatcher North America Inc  (Nov. 29, 2013)

Increasing pressure loss in the pipeline is often caused by scale corrosion or product fouling of the internal surfaces. This condition slows transmission and distribution capacity, and can require more than just routine maintenance if it remains unaddressed. Interior corrosion, fouling and leakage in pipeline systems will adversely impact ...

Removal of inorganic anions from drinking water supplies by membrane bio/processes

by Springer  (May 1, 2005)

This paper is designed to provide an overview of the main membrane-assisted processes that can be used for the removal of toxic inorganic anions from drinking water supplies. The emphasis has been placed on integrated process solutions, including the emerging issue of membrane bioreactors. An attempt is made to compare critically recently reported ...

Sustainable groundwater management using reclaimed water: the Torreele/St-André case in Flanders, Belgium

by IWA Publishing  (Feb. 6, 2013)

The Torreele facility produces infiltration water for indirect potable re-use through artificial recharge of the dune aquifer of St-André. The secondary wastewater effluent is treated by ultrafiltration (UF), using the submerged ZeeWeed system, prior to reverse osmosis (RO), using brackish water low energy membranes. The Torreele ...

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