biofouling monitoring Articles

  • Biofouling Plant Performance

    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 1998. Shortly after, Skid 1 was cleaned after ...


    By MASAR Technologies, Inc.

  • Does your cooling tower have a biofouling problem?

    What’s growing in your tower? It’s important to be able to identify microbial biofouling in the industrial cooling systems that you treat. We know that biofouling is a bad thing … reducing the heat transfer performance of a cooling system, as well as causing microbially induced corrosion, harboring pathogens, and accumulating scale deposits. All these problems can ...


    By AMSA, Inc.

  • 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

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

    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 and tailpipes in rapid gravity filter beds (RGFs). ...


    By IWA Publishing

  • Monitor Hull Corrosion with Thickness Gauge

    After our recent article about inspecting your hull paint to reduce bio-fouling and acting as an anti-corrosion method, we wanted to delve deeper into one of the biggest problems shipowners and operators face: corrosion. ...


    By Deep Trekker Inc.

  • New approaches for monitoring the marine environment: the case of antifouling paints

    Protection of ships hulls against biofouling has been a problem since man began sailing the seas. The most common protections are specially produced antifouling paints. These paints could be broadly classified in three main groups, or generations, depending on the technology applied: first generation copper-based, second generation organotin-based, and the new, third generation, organotin-free ...


    By Inderscience Publishers

  • Monitoring of CaSO4 deposition behaviors on biofilm during nanofiltration via ultrasonic time-domain reflectometry (UTDR)

    The ultrasonic time-domain reflectometry (UTDR) as a non-destructive real-time method was employed to monitor the CaSO4 deposition behaviors on biofilm during nanofiltration (NF). Two parallel experiments were performed to compare the different behaviors of CaSO4 deposition with and without biofilm on the membrane. Results showed that the flux decline during combined fouling was slower than that ...


    By IWA Publishing

  • Long-Term Water Quality Monitoring Deployments with the Sea-Bird Hydrocat-Ep - Case Study

    The new Sea-Bird Scientific HydroCAT-EP incorporates a suite of physical and biogeochemical sensors into a single, robust instrument designed to maximize water quality parameters and give sustained accuracy. The instrument uses the same high quality Sea-Bird and WET Labs sensors found on their industry    leading    CTDs    and    ocean ...

  • Performance monitoring & troubleshooting with a new individual condenser tube circulating water flow and fouling (ClA/FF) meter - case study

    Introduction Midwest Generation Joliet Station in Illinois has two coal-fired units, Unit 7 and Unit 8. Roth 550 MW units are located on the Des Plaines River and have been in operation since 1963-1964. The circulating water system is a once-through system comprised of a bar rack, traveling screens, circulating water pumps and reversible condensers. The original condenser tubes on Unit ...


    By Intek, Inc.

  • Antifouling System Reduces Algal and Biological Growth on the In-Situ TROLL 9500 Water Quality Instrument

    Abstract New regulations regarding clean water have increased the need for long-term environmental monitoring. As water quality sensor technology improves and becomes more stable, the limiting factor in these projects becomes biological and non-biological fouling of instrumentation. Biofouling of environmental equipment increases site visits and maintenance, which elevate monitoring costs. ...


    By In-Situ, Inc.

  • 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.

  • Antifouling System Extends Instrument Deployment by Up to Six Weeks

    ABSTRACT Cost reduction has become a primary focus for nearly every public and private research institution. The environmental monitoring industry has not been immune to the cost-cutting efforts and seeks innovative waysto help field monitoring professionals gain efficiency. This has led to the development of newtechnologiesthat extend deployment duration and minimize costly maintenance ...


    By In-Situ, Inc.

  • Organic matter removal in bio-filters to achieve biologically stable water downstream of the process

    Organic removal contaminants reclamation has increased over the past years as it has many advantages over other treatments. Product water from water treatment plants can be chemically complex resulting in physical and biological changes during transportation in the distribution systems. The general aim of this study was to evaluate the effectiveness of biofilters for reducing the concentration ...


    By IWA Publishing

  • Performance Comparison of RO and NF Systems

    The nanofiltration train (NF-A) and reverse osmosis train (RO-A) at Port Hueneme Brackish Reclamation Demonstration Facility in Southern California have both suffered from biofouling since startup in November 1998 until the plant implemented a raw water chloramination scheme in June 2000 (around 13,500 hours of operation). Moreover, the nanofiltration membrane elements also suffered from a ...


    By MASAR Technologies, Inc.

  • 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

  • Silent Alarm software optimizes membrane plants

    Overview Since the advent of membrane technology applications in commercial and industrial water desalination and purification plants utilizing RO, NF, UF & MF processes, membrane manufacturers, system suppliers and end-users alike have been facing two major problems: how to adequately and reliably monitor membrane system performance and how to detect membrane fouling and scaling ...


    By MASAR Technologies, Inc.

  • 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

  • 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

  • Explosion-proof chlorine analyzers facilitate chlorination and discharge compliance of LNG terminal - Case Study

    The Dunkirk LNG terminal in France is owned and operated by the EDF subsidiary Dunkerque LNG. The terminal has facilities such as a berthing station with the hosting capacity of around 80 LNG tankers a year, unloading system and storage facilities. The LNG is transported to storage tanks by methane tankers equipped with reinforced hulls and double-walled tanks.The berth installed at the terminal ...


    By AppliTek NV

  • Dissolved Oxygen – the discussion moves on

    Do Dissolved Oxygen Sensors need Cleaning? The re-emergence of Optical Dissolved Oxygen Sensors around 6-7 years ago generated a lively and interesting discussion which revolved around the relative merits of Optical and Galvanic Dissolved Oxygen sensors. We understand that opinions will differ, so in order to accommodate our customers preferences we are pleased to offer our OxyTechw² ...


    By Partech (Electronics) Ltd.

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you