sediment filter cartridge Articles

  • Advances in String-Wound Sediment Filter Cartridges

    In the mid-1930s, the first string-wound depth filter cartridge entered the U.S. market. It was made from a woven wire mesh core surrounded by a cotton yarn, which was wound to form the depth filtration medium. The yarn itself was a tightly twisted medium and the major filtration essentially took place at the points of crossings of the yarns- which formed a diamond-shaped pat-tern-rather than ...

  • New polypropylene media for string-wound filter cartridges

    String-wound cartridges are among the most commonly used filtration media for reducing sediments and other suspended impurities in liquids and water. Traditionally these cartridges are made from 'roving' or 'friction-spun' yarn and factors such as media migration and chemical leaching were among the major drawbacks. With a new innovative development in the polypropylene filter media for making ...

  • New developments in filter cartridges for reverse osmosis pre-filtration

    Reverse osmosis (RO) pretreatment systems are designed to reduce suspended solids to a level that will provide the most suitable conditions for the performance of the membrane system. Depending upon the quality of the feed water, pretreatment may include settlement, clarification, multi-media filtration, and chemical treatment. However, sediment pre-filtration is always required to ensure that ...

  • POE sediment filtration — your first line of defense

    Around the country, our aging water delivery infrastructure is coated with sediment and scale from a century or more of buildup. Those same tuberculated pipes are constantly challenged by daily tie-ins, repairs, flow tests and fire hydrant use in most cities and towns. The result is that drinking water that left the municipal treatment plant at top quality arrives in users’ glasses — or in their ...

  • Petersburg airport improvements

    Semi-Passive Treatment with ChitoVan Chitosan Lactate Cartridges Dungeness Environmental was called upon to assist with passive treatment using ChitoVan Chitosan Lactate Cartridges at an Airport Safety Improvement project in Petersburg, Ak in March of 2009. The project consisted of expanding the runway to meet FAA and RSA design standards. In the process multiple culverts were replaced which ...


    By Dungeness Environmental

  • A Layman`s Guide to Inorganic and Organic Contaminant Removal by Standard Filtration Methods

    Plant operators, maintenance engineers and mechanics, specifying engineers, installation technicians, and others involved in inorganic and organic contaminant removal are oftentimes called upon to choose and apply filtration solutions. To best make these decisions, it is helpful to review information and updated insight on basic filtration technologies, along with their advantages and ...


    By Shelco Filters

  • Uptown shopping center

    ChitoVan Chitosan Lactate Cartridge Pretreatment and Sand Filtration Urban development and redevelopment present a host of challenges - not the least of which is managing site stormwater runoff. In a northern suburb of Vancouver Island’s beautiful city of Victoria, BC the stormwater challenge was met and bested through the application of both passive and active chitosan stormwater ...


    By Dungeness Environmental

  • Seven Maintenance Considerations for Stormwater Filtration Systems

    All stormwater BMP’s will require maintenance at some time or time interval. Long-term maintenance costs and maintainability are very important considerations. Here are some other things you should consider when discussing maintenance of your stormwater filtration system. 1. Evaluate availability of maintenance contracting. It is the nature of filters to occlude with ...

  • Are we still protecting the environment?

    Growing public awareness and concern for controlling water pollution led to enactment of the Federal Water Pollution Control Act Amendments of 1972. As amended in 1977, this law became commonly known as the Clean Water Act. Since its inception we have seen the evolution of Stormwater Best Management Practices to meet the demands of treatment and pretreatment of stormwater runoff from the roof ...


    By Environment 21, LLC

  • Methods of Purification

    Water Innovations Water Systems Carbon Filtration is used for several reasons. Its primary purpose is the reduction of chlorine to less than 0.1 ppm. Chorine can damage softener resins, reverse osmosis membranes, and mixed bed deionization resins. Activated carbon will also help control tastes and odors, provide organic and hazardous organic chemical ...


    By Water Innovations, Inc

  • A new look at Bromine - a potential sleeping giant?

    The daunting challenge By now, most in the international drinking water industry are very familiar with the UN Millennium Development Goal to reduce by half the number of people lacking daily access to safe drinking water by 2015 and that the majority of the world’s 1.1 billion in greatest need are living in developing and under-developed countries. In some of the developing ...


    By DelAgua Group

  • Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures

    Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water ...


    By Solinst Canada Ltd.

  • Sustainable wastewater separation treatment systems coupled with nutrient and water reducing greywater reuse technologies

    Nationally and internationally, pressure is increasing to introduce nutrient reducing, water conserving and recycling measures for sustainable residential and small community water/wastewater systems. Reports of inadequate water quality and quantity are being reported daily. Over the past thirty years the federal government and State of Alaska have invested over 4 billion dollars installing piped ...


    By Equaris Corporation

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