ballast water Articles

  • Railroad Ballast Density Measurement

    Because existing methods were unsuitable for measuring the in-situ density of railroad ballast, studies were conducted to develop a new technique. A laboratory investigation was made of the various factors affecting the measurement of density in railroad ballast, which typically is composed of open-graded and coarse-grained aggregates. An approach employing water replacement in a lined hole was ...


    By ASTM International

  • On Site Bioremediation Of Oily Ballast Waters Of Ships and Tankers

    A poster presentation was made at the International Ballast Water symposium held in London, UK Paper discusses application of bioremediation products for ship board remediation of oily ballast water on ships and tankers and presents some case studies on bioremediation of industrial oily waste. Abstract Discharge of oily wasie ballast waier is a perpetual problem for most types of ...


    By Sarva Bio Remed, LLC

  • UV Ballast Water Treatment Close to US Approval

    Shipowners have found it increasingly difficult to comply with ballast water treatment regulations in the US. But there’s good news on the horizon thanks to DESMI’s newest UV-based solution Ultraviolet radiation (UV), which counters microorganisms by rendering them unable to reproduce, is the preferred method for today’s ballast water treatment systems. This robust and reliable ...


    By DESMI A/S

  • The marine environment and ballast water management law

    This article contains a study of international and national measures dealing with the potential threat of pollution and the introduction of alien species that may come from the discharge of improperly treated ballast water. Ballast water management policy, law and coastal biosecurity strategies are considered. There are challenges to achieving the ideals of ballast water laws, as correctly ...


    By IWA Publishing

  • Maersk line - ballast tank cleaning

    Overview The following is an internal document from Maersk highlighting the use of SpillAway's NavalKleen II product for the bioremediation of No.6 heavy fuel oil that had leaked into the ballast tank of SL Atlantic. At the point that SpillAway were asked to help, the contaminated ballast water had been removed and the tank physically cleaned, however, residues left in the tank were still ...


  • Effectiveness and Kinetics of Ferrate as a Disinfectant for Ballast Water

    The objective of the study was to determine whether ferrate could meet the international standards for successful ballast water treatment, including final concentrations of less than 1 CFU/ml of Enterococci, less than 2.5 CFUs/ml of Escherichia coli, and less than 1 CFU/100 mls of Vibrio cholerae. Pure cultures of Escherichia coli, Klebsiella pneumoniae, and V. cholerae, and a mixed culture of ...

  • 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.

  • Railroad track ballast crushing and screening plant

    Track ballast forms the track bed upon which railway sleepers (UK) or railroad ties (US) are laid. It is packed between, below, and around the ties. It is typically made of crushed stone, although ballast has sometimes consisted of other, less suitable materials. The crushed stone comes from the stone crushing and screening plant, and DSMAC supply high efficiency railroad track ballast crushing ...


    By DSMAC Group

  • Lessons Learned from Startup of the Largest Tertiary Ballasted Settling System in the U.S.

     ABSTRACT In February 2005, Onondaga County (County) began operating a 492,000 m3/day (130 mgd) peak flow ballasted settling system at the Metropolitan Syracuse Wastewater Treatment Plant (Metro WWTP) for tertiary phosphorus removal. The system was designed to reduce the total phosphorus concentration in the BAF effluent from 0.75 to 0.12 milligrams per liter (mg/L). This ...

  • Flocculation kinetics mechanism and floc formation prepared by poly aluminum chloride coupled with polyacrylamide for ship ballast water

    The performance of flocculants prepared by poly aluminum chloride (PAC) and polyacrylamide (PAM) on treating ballast water collected at the Dalian new port area, the evaluation depending on the values of reaction parameters, and kinetics mechanism of flocculation were investigated in this study. Accordingly, the flocculants of 0.1 g·L−1, prepared by mixing PAC of 10% with PAM of 2.0‰, enabled ...


    By IWA Publishing

  • Effectiveness and potential environmental impact of a yeast-based deoxygenation process for treating ship ballast waters

    We assessed the effectiveness and potential environmental impact of a yeast-based deoxygenation process considered for treating ship ballast waters to reduce the risk of aquatic species introduction. Laboratory experiments were conducted to test three treatment concentrations (0.33%, 0.67% and 1.0% v v−1) at five temperatures (4, 10, 15, 20 and 25 °C) in both fresh- and saltwater, with ...


    By IWA Publishing

  • 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.

  • Loch Turret water treatment works

    Actiflo® high rate sand ballasted clarification & multiflo lamella sludge thickening plant The Loch Turret upgrade was the largest drinking water project for Scottish Water in the latest investment period. The scheme was taken over in 2010 and is delivers approx 85 million litres of drinking water per day The Client Scottish Water is the UK's fourth largest ...


  • UV, a bright future for the water industry

    The use of Ultra Violet (UV) light has now become standard practice in most municipal waste water treatment processes.  Effluent is now starting to be recognised as a valuable resource, not a problem that needs to be dumped. Many waste water facilities are being renamed as water reclamation facilities, and whether the waste water is being discharged into a river, being used to irrigate ...


    By atg UV Technology

  • WP biological water purifier, decontamination from Germs & Bacteria

    WP water purifier WP has the power to decontaminate Water (sea- or freshwater) from Germs & Bacteria.  1. water from biological river / lakes can use for Drinkwater. we testet the results by a national unindependent laboratory, Report at attachment.  2. WP works also by ballast water in shiptanks from freight- or passenger ships. 4,5 - 6 € Euro ...


    By Oil Dissolver GmbH

  • 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.

  • Evaluation of activated starch as an alternative to polyacrylamide polymers for drinking water flocculation

    Polyacrylamide polymers (PAM) are one of the most common water treatment chemicals used in clarification processes. Concerns have been raised with regards to the aquatic and human toxicity of acrylamide monomer. Greener polymers, produced using potato starch, were investigated at lab-scale as a potential non-toxic alternative to the use of PAM within a ballasted flocculation process ...


    By IWA Publishing

  • 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

  • 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 ...

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