sediment filter Articles

  • The Importance of Dewatering

    With spring comes two things: the onset of construction season for most of our country and rain- lots and lots of rain. The unpredictability of storms and the amount of rainfall is all a guessing game.  Jobsites flood, work stalls and projects get delayed. Rain makes it hard to keep dry and on-schedule. What’s the solution? Dewatering is a technique used to control ...


    By Pac-Van, Inc.

  • A solution to fracturing water supply and disposal issues

    “Water, water, everywhere, Nor any drop to drink.” –The Rime of the Ancient Mariner, Samuel Taylor Coleridge Many topics of conversation among oil and gas industry professionals are predictable – oil price trends, the “great shift change” imperiling the available workforce, and production quotas and caps from OPEC. Yet one pressing topic among those developing ...


    By Fairmount Santrol

  • 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 ...

  • Minergy GFT Supplemental Sediment

    The purpose of the Study is to evaluate the economic and technical feasibility of melting PCB contaminated river sediments in a glass furnace. The Glass Furnace Technology (GFT) was developed by Minergy. Minergy originally developed vitrification technologies to process wastewater sludge into glass aggregate that could be sold as a commercial product. The technology was evaluated during a U.S. ...


    By Minergy Corporation Limited

  • De Pere & Manitowic, WI - Dewatering / Filtering Drilling Sediments - Case Study

    TenCate develops and produces materials that function to increase performance, reduce costs and deliver measurable results by working with our customers to provide advanced solutions. THE CHALLENGE Lunda Construction was subcontracted by Michels Corporation to provide 35' diameter down-shafts to facilitate the installation of a pipeline between the Manitowoc River and the Fox ...

  • Natural colloids are the dominant factor in the sedimentation of nanoparticles

    Estimating the environmental exposure to manufactured nanomaterials is part of risk assessment. Because nanoparticles aggregate with each other (homoaggregation) and with other particles (heteroaggregation), the main route of the removal of most nanoparticles from water is aggregation, followed by sedimentation. The authors used water samples from two rivers in Europe, the Rhine and the Meuse. To ...


    By John Wiley & Sons, Ltd.

  • 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 ...

  • Passive Filter – Sustainable BMP For Permanent Stormwater Treatment Of Heavy Metals, Nutrients, Hydrocarbons And Sediment

    Passive filtration provides a sustainable alternative to classical drainage concepts for source control of hydrocarbons, heavy metals and nutrients that endanger our water bodies. In urban areas with high building density, traditional drainage concepts like wetlands are not available and the concept of decentralized treatment facilities that can be housed in catch basin structures are a viable ...


  • Soil Filters

    Soil filters (in german: Retentionsbodenfilter) are facilities for the removal of nutrients and/or pollutants; typically on the level of an industrial site, a quarter or a drainage system (sub-)catchment. Usually they are located at the discharge points to surface waterbodies to ensure water quality standards. Soil filters consist of two parts: The first part is a retention pond or basin for ...


    By IWA Publishing

  • Dewatering of moist sediments and soils for application to RaPID Prep AND RaPID assays procedures

    BACKGROUND INFORMATION: High moisture content (>30% by weight) can significantly lower concentrations of analytes detected in the RaPID Prep soil methods. In these methods, water associated with a sample will increase the volume of the extraction solution (liquid phase) and decrease the amount of soil (solid phase) in a weighed sample. In some cases, water may also decrease the ...


  • PCDD/F release during benthic trawler‐induced sediment resuspension

    Benthic trawling can cause the resuspension of large amounts of sediments. Such regular practice in the Grenland fjord system in the south of Norway has the potential to affect the fate, movement, and bioavailability of sediment‐associated polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/Fs). A novel mode of exposing passive sampling devices consisting of towing semipermeable membrane ...


    By John Wiley & Sons, Ltd.

  • Problematic algae in the sedimentation and filtration process of water treatment plants

    Problematic algae, species that do not settle or are not easily removed by water treatment processes, are common in many water treatment plants (WTPs). We recorded algae in the water that overflowed from sedimentation basins (SBs) to filtration basins of WTPs in South Korea. Diatoms were common and other algae were not discernible in the flocs. Our field observation indicated that long and ...


    By IWA Publishing

  • The influence of temperature and salt on metal and sediment removal in stormwater biofilters

    Stormwater biofilters are used to treat stormwater runoff. In countries with cold winter climates, biofilters are subject to low temperatures which, in some cases, are combined with potentially high salt concentrations from road de-icing, potentially affecting the biofilter's performance. Since stormwater biofilters have been developed without consideration of their critical winter use, a ...


    By IWA Publishing

  • Erosion and Sediment Control: Navigating NPDES Regulations, the SWPPP, and Techniques for Compliance

    Erosion and Sedimentation: Why Are They a Problem? The US Environmental Protection Agency lists sediment as the single most common pollutant in rivers, streams, lakes, and reservoirs. With all the potentially harmful chemicals and substances in the world, it seems odd to many people that sediment—dirt, essentially—is singled out as the major culprit. Yet these particles of ...


    By FINN Corporation

  • Filtering and retention structures

    Filtering and retention structures serve the purification and intermediate storage of rainwater discharge from tilled areas. The untreated rainwater from a seperate sewer system can have a major share in water body pollution. Thereby, especially the concentration of filtratable material is problematic. Additionally, rainwater floats intermittently into the water body. Measures for purification ...


    By IWA Publishing

  • Assessing the suitability of sediment-type bioelectrochemical systems for organic matter removal from municipal wastewater: a column study

    This study examines the use of bioelectrochemical systems (BES) as an alternative to rock filters for polishing wastewater stabilisation ponds (WSPs) effluent, which often contains soluble chemical oxygen demand (SCOD) and suspended solids mainly as algal biomass. A filter type sediment BES configuration with graphite granules (as the surrogate for rocks in a rock filter) was examined. Three ...


    By IWA Publishing

  • Total and methylmercury partitioning between colloids and true solution: From case studies in sediment overlying and pore waters to a generalized model

    Tangential flow ultrafiltration was used to determine the partitioning of total mercury (THg) and monomethyl‐mercury (MMHg) between colloids and true solution in sediment overlying (OW) and pore waters (PW) collected in Lake Geneva (Switzerland/France), Venice lagoon (Italy), and Baihua reservoir (China). Overlying water and PW spanned different ranges of THg and MMHg concentrations, redox ...


    By John Wiley & Sons, Ltd.

  • Comparison of the water purification efficiency of two different flocculation-sediment-filtration (FSF) processes in Chaohu Lake in China

    A novel biofilter (BF) with the potential to improve pollutant removal when used as a substitute for sand filters in water purification processes is presented. To investigate BF's pollutant removal performance, a flocculation-sediment-biofiltration (FSBF) process was compared with a flocculation-sediment-sand filtration (FSSF) process on a lab scale, with water collected from Chaohu Lake. The ...


    By IWA Publishing

  • Geotube Dewatering Technology contains and dewaters river sediments at large Water Treatment Plant in New Jersey - Case Study

    River sediments and filter backwash sludge are annually dredged and dewatered in Geotube containers for beneficial reuse. TenCate develops and produces materials that function to increase performance, reduce cost, and deliver measurable results by working with our customers to provide advanced solutions. And a unique high volume, low cost dewatering system from TenCate Geotube can ...

  • Filter backwash water treatment options

    Filtration acts as the final step in the removal of suspended matter and protozoa. The accumulated residue is removed during the backwash process and any subsequent recycling of filter backwash water could potentially re-introduce these contaminants into the main treatment process. By separating the filter backwash water from the main treatment process, factors that could interfere with the ...


    By IWA Publishing

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