biofouling control Articles

  • Integrated approach for biofouling control

    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 approaches to solve biofouling. Combinations of ...


    By IWA Publishing

  • Prevent biofouling and reduce fuel costs in sea chests, hulls and cooling basins

    Biofouling growth increases the drag on a hull which results in a ship that uses up to 40% more fuel and correspondingly produces 40% more CO2 emissions. The marine industry globally spends billions of dollars in addressing fouling, using a variety of protection methods such as coatings. LG Sonic, a Dutch algae and biofouling control solutions provider, has introduced an Industrial Line which ...


    By LG Sonic

  • Biofouling Control in Small Cooling Towers

    Why is biofouling control overlooked in small cooling towers? Biofouling control in small to medium cooling towers is overlooked. AMSA, Inc. has developed a simple technology that is easier to dose than more common liquid chemical ...


    By AMSA, Inc.

  • UNIPER Maasvlakte power plants - Case study

    Project FactsThe UNIPER power plant, Maasvlakte (MPP3) is located adjacent to Rotterdam harbour on the North Sea coast and has a capacity of 1100 MW netto. The Power Plant utilises seawater for cooling of the condenser during the energy-generating process. The seawater is extracted from the Europahaven and discharges the warmed seawater into an exhaust basin that flows out through the ...

  • Al Khafji SWRO plant - Case study

    Project FactsAdvanced Water Technology (AWT) build the Al Khafji Seawater Reverse Osmosis SWRO Desalination Plant, which is the world's first large-scale solar-powered desalination plant. It is located in Al Khafji to the north-eastern part of Saudi Arabia near the Kuwait border. The desalination plant was completed by late 2017. It will supply 60,000m³ of desalinated seawater a day to ...

  • Ultrasonic algae control solutions to treat smaller water areas

    Algae has an import function in nature, it provides food and energy for animal life, and much of the earth’s oxygen. However, an excess of algae can be hazardous to both humans and animals. Research has demonstrated that ultrasound can be an effective method of controlling algal blooms. Ultrasonic algae control solutions: the differences There are various ...


    By LG Sonic

  • In vitro study of the effect of cationic biocides on bacterial population dynamics and susceptibility

    Cationic biocides (CBs) are widely used in domestic and public hygiene and to control biofouling and microbial contamination in industry. The increased use of biocides has led to concern regarding possible reductions in biocide effectiveness. Domestic drain microcosms were stabilized for 5 months and then exposed to polyhexamethylene biguanide ...

  • Effects of pipe materials on biofouling under controlled hydrodynamic conditions

    Experiments were carried out to investigate pipe material impacts on biofouling, at high effluent concentration levels and under controlled hydrodynamic conditions. Two velocities (0.4 and 0.8 m s−1) were used to monitor biofilm growth on polyethylene (PE) and polyvinylchloride (PVC) pipe walls, respectively. These conditions were established based on wastewater irrigation practices. A ...


    By IWA Publishing

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

    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 cyclic aeration, using a cycle of 10 seconds on ...

  • Biofouling in cooling basin - Case Study

    Al Futtaim Cooling district plant incorporated the LG Sonic technology into their chemical treatment program to reduce the biocide consumption in the cooling towers and improve the water quality. The Challenge: Prevent Biofouling and Reduce Chemical Dosage Reduce chemical dosage for water treatment and at the same time controlling factors that may cause problems such as ...


    By LG Sonic

  • On-site treatment of used wash-water using biologically activated membrane bioreactors operated at different solids retention times

    Biologically activated membrane bioreactors (BAMBis) were operated at suspended solids retention times (SRT) of 7 and 102 days and at full solids retention. The effect of these different approaches of operation on the substrate and nutrient conversion, and on permeate flux, was investigated. Variations in organic loads and aeration intensities were also studied. Permeate flux stabilized during ...


    By IWA Publishing

  • Influence of permeation on air/water cleaning of spiral wound membrane NF/RO elements

    To improve hydraulic conditions, periodic air/water cleaning (AWC) is applied to a nanofiltration (NF) spiral wound membrane (SWM) element under permeation conditions to control biofouling and particulate fouling. A pilot study was carried out for 212 days with a vertically positioned SWM element fed by tap water enriched with a biodegradable compound (60 μg acetate-C l−1). Operational parameters ...


    By IWA Publishing

  • Opportunistic pathogens and faecal indicators in drinking water associated biofilms in Cluj, Romania

    Biofouling occurs without exception in all water systems, with undesirable effects such as biocorrosion and deterioration of water quality. Drinking water associated biofilms represent a potential risk to human health by harbouring pathogenic or toxin-releasing microorganisms. This is the first study investigating the attached microbiota, with potential threat to human health, in a public water ...


    By IWA Publishing

  • Learning to Live With Biofilm: The Challenge of an Effective Biofilm Control Program

    The organism always wins. This is the challenge of biofilm control. Microbial biofouling and its root cause, biofilm, cannot be totally prevented, at least for a practical length of time in industrial settings. We have many approaches to keep it at bay but it will always be with us. In industrial water treatment, our goal is to keep biofouling  ...


    By AMSA, Inc.

  • Removing biofilm from membranes – a practical approach

    Abstract Within the lifetime of most reverse osmosis (RO) systems some fouling will adversely affect membrane performance.One of the major foulants identified on lead membranes during a decade of membrane autopsy at the Genesys Membrane laboratory is biological fouling (biofouling). All raw water sources contain microorganisms such as algae, bacteria and fungi. They also contain ...

  • Evaluation of a novel anti-biofouling microorganism (Bacillus sp. T5) for control of membrane biofouling and its effect on bacterial community structure in membrane bioreactors

    The effects of a newly isolated quorum quenching (QQ) bacteria (Bacillus sp. T5) on the microbial community has been evaluated via the Illumina sequencing method. Membrane bioreactors (MBRs) operated with this novel QQ bacterium to evaluate the improvement in the performance of MBR. Anti-biofouling effect of T5 was enhanced as 71% compared to the control reactor. Also, QQ bacteria did not ...


    By IWA Publishing

  • Controlling biofouling of reverse osmosis membranes through surface modification via grafting patterned polymer brushes

    Thin film composite (TFC) polyamide membranes are extensively used as selective barriers in reverse osmosis processes. The major challenge faced with TFC membranes is significant fouling on the surface, which restricts the overall purification performance. To address the fouling problem, we developed novel fouling-resistant surface coatings via polyelectrolyte [poly(allylamine ...


    By IWA Publishing

  • Kuriverter IK-110 effect in SWRO plant Extraordinary biofouling reduction - Case Study

    Learn how Kuriverter IK-110 successfully improves biofouling and decreases operation costs in a SWRO plant. ...


    By Kurita

  • LG Sonic advances in lab tests for sea lice control

    The LiceSonic research project, started by a European Consortium coordinated by LG Sonic to develop an environmentally friendly solution to control sea lice in open finfish production, has advanced into lab testing. The first lab tests provided positive results for the further development of an ultrasound solution to control sea lice. ...


    By LG Sonic

  • Map Algal Blooms with Satellite Remote Sensing Technology

    The quality of water bodies is a key determinant in the usability of the resource for the purpose required. It is therefore of great importance to managers of hydrologic resources to be able to confidently tell the status of their water resource. One of the major problems in the quality of surface water bodies is the blooming of algae and blue green algae. Algal blooms can result in ecological, ...


    By LG Sonic

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