ballast water control Articles

  • Effects of temperature on type approval testing of ballast water treatment systems

    In order to limit the risk associated with invasion of habitats by exogenous species, the International Convention for the Control and Management of the Ships' Ballast Water and Sediments was adopted in February 2004 and may soon enter into force. The International Maritime Organization (IMO) has produced guidelines to assess the efficacy and reliability of Ballast Water Treatment Systems ...


    By John Wiley & Sons, Ltd.

  • An evaluation of the residual toxicity and chemistry of a sodium hydroxide‐based ballast water treatment system for freshwater ships

    Non‐native organisms in the ballast water (BW) of freshwater ships must be killed to prevent the spread of invasive species. The ideal BW treatment system (BWTS) would kill 100% of BW organisms with minimal residual toxicity to organisms in receiving waters. The residual toxicity and chemistry of a BWTS was evaluated: sodium hydroxide was added to elevate pH to > 11.5 to kill BW organisms, ...


    By John Wiley & Sons, Ltd.

  • Harmful algal blooms: new methods of control and management

    The general increase in eutrophication of waters and the changes in global climatic conditions have caused over the last 30 years the spread of algal blooms in seas all over the world. The paper describes the different aspects of this problem, the known classes of marine algal toxins and their effects on human activities, and the problem of ballast waters. New strategies of remote sensing ...


    By Inderscience Publishers

  • What’s Hiding in the Water?

    As we grow in understanding the significance different organisms have in the ecology of an environment, it helps tremendously if we knowwhich organismsinhabit that environment – whether they’re supposed to be there or not.  One method that is gaining widespread use, and relies on a simple filtration method, is the analysis of environmental DNA (eDNA) from local waterways. ...


    By Sterlitech Corporation

  • The Power of Reclaimed Water

    Power generation need not be another source of strain on diminishing freshwater resources. Well-established water reclamation technologies are enabling producers to conserve resources and money. Meeting the needs of a planetary population expected to surpass eight billion people by 2025 is requiring more output from fewer resources. In the case of dwindling supplies of ...


    By Veolia Water Technologies

  • Adapter bacteria control oil spill in bulk

    Introduction Microbac was called in to advise on a required treatment for an integrated bulk oil handling facility and sea-land terminal, receiving, storing and shipping a wide variety of liquid fuels, inorganic chemicals and petrochemicals, many of which are toxic to microorganisms. The variable and complex waste streams from tank truck cleaning, ballast and tank cleaning discharges from ...


    By Microbac Ltd

  • A Guide to Oil in Water Monitoring for Environmental Compliance

    Applications for industrial oil in water monitoring can vary greatly. In upstream and midstream oil and gas production applications, monitoring separation efficiencies is key to optimize production rates, preventative maintenance, chemical use, flow, and environmental compliance. Separated water from the oil is called produced water and it must be cleaned of oil before disposal or ...


    By Arjay Engineering Ltd.

  • Emerging Trends In UV Disinfection For Water Treatment

    Introduction The UV disinfection industry has experienced tremendous growth over the last 20 years.  The development of new UV technologies over this period has been a perfect example of an industry investing to meet market demand – in this case demand for an effective, low cost, and environmentally friendly disinfection technology.  The acceptance of UV disinfection at water plants ...

  • Ten top growth markets in air, water and energy

    For suppliers of products and services for the air, water, and energy industries there are some substantial double-digit growth opportunities. Ten of these have been identified as the most promising by the McIlvaine Company These are ranked based on potential market size. #1 Shale Gas There is a very large continuing investment in extraction of gas from shale in the U.S. The ...


    By The McIlvaine Company

  • Boggabri Erosion Control Flumes, New South Wales - Case Study

    Background During the past ten to fifteen years, the resources sector has seen phenomenal growth however in the areas of coal, gas and petroleum the expansion has been unprecedented. In NSW, coal mining in the Hunter Valley near Singleton and Muswellbrook has always been the focus of attention for coal mining and growth, however despite expectations that deposits will be available for some ...


    By Presto Geosystems

  • All For One & One For All: A Water Reuse Partnership with Innovative Treatment and Permitting

    Cooperation between the City of Mankato, MN, Calpine Corporation, and the Minnesota Pollution Control Agency (MPCA) has created benefits for all. In late 2004, an agreement was reached between the City of Mankato, MN and the Calpine Corporation, an independent power production company, to treat and reuse the City's wastewater treatment plant effluent as cooling water for a proposed 640-megawatt ...

  • Negotiating Higher NPDES Permit Limits Strategies for Optimizing Technology and Water Quality-based Effluent Limit Calculations for Petroleum Refining

    Untitled Document Introduction The Clean Water Act is generally considered to be one of the most successful ...


    By Weston Solutions, Inc

  • Linking zebra mussel invasion and waterborne commerce in the USA

    The zebra mussel, a non-indigenous species in North American freshwater ecosystems, has received significant attention over the past two decades as a costly and damaging invader. In the USA, federal-, state-, and local-level policies designed to control and/or prevent the spread of this species remain flawed, in that they do not everywhere account for (or enforce regulations over) all potential ...


    By IWA Publishing

  • Canal sealing with Bentofix case study

    After the first pilot project installation of a geosynthetic clay liner (GCL) in a 1 km long section of the Havel-Oder-Waterway in 1997/98, approved by the local German Water and Ship Authority a second project followed shortly after. In a 500 m long section of the Dortmund-Ems-Canal a newly developed innovative GCL was installed under water. The installed GCL was Bentofix BZ 13-B, a ...


    By NAUE GmbH & Co.KG

  • Evaluating non‐indigenous species management in a Bayesian networks derived relative risk framework for Padilla Bay, WA

    Many coastal regions are encountering issues with the spread of non‐indigenous species (NIS). In this study, we conducted a regional risk assessment using a Bayesian network relative risk model (BN‐RRM) to analyze multiple vectors of NIS introductions to Padilla Bay, Washington, a National Estuarine Research Reserve. We had three objectives in this study. The first objective was to determine ...


    By John Wiley & Sons, Ltd.

  • Quick Sandbagging for Spring Flooding 2014

    According to NOAA’s Spring Outlook for 2014, rivers in half of the continental USA are at minor or moderate risks of flooding this spring. The SandMaster sandbagging attachment may be just what your community needs to provide the protection when a flood event threatens your ...


    By Barrier Systems, LLC

  • Building a filter defense against Zebra and Quagga mussles

    Tiny mussels can create massive problems for intake structures, vaLves, pumps, screens and other water infrastructure around the US. Some filtration systems can provide chemical-free protection against invasive zebra and quagga mussels, but it is vital to understand the problem and develop the right system to avoid being overrun by the alien species. Zebra mussels (Dreissena polymorpha) and their ...

  • Jersey specifies Trojan - again

    Jersey Island, British Isles, is a popular tourist destination for Europeans. It’s the largest of a series of small, independent islands in the English Channel near the coast of Normandy. In 1992, Trojan’s U.K.subsidiary, Sunwater Limited, provided a state-of-the-art water disinfection system to upgrade Jersey’s then thirty-three year old main sewage treatment plant at Bellozanne, near St ...

  • Why BioLargo Is Hot and Why Shares May Get Hotter

    Investors have waited patiently as BioLargo, Inc. (OTCQB: BLGO) spent millions of dollars and many years developing a world-class water treatment technology that promises to impact the world for good. In much of the world, water equates to life, and the need for clean water has never been so critical as now. Supply challenges are exacerbated by drought, pollution from industry and agriculture, ...


    By Biolargo, Inc.

  • A Regulatory Perspective on Maintenance of Disinfection Systems

    ABSTRACTThe Clean Water Act contains requirements to set water quality standards for all contaminants, including bacterial contaminants, in surface waters. Wastewater treatment cannot be expected to remove all of the bacterial contaminants, and as a result, many organisms remain in the waste stream. Therefore, disinfection of treated wastewaters is designed to reduce bacterial numbers to a safe ...

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