Contaminant Removal Case Studies and White Papers

  1. Evaluation Of Ceraflow-50 As A Filtration Media For Hexavalent Chromium Treatment
    6/1/2018

    Pilot testing was conducted to evaluate the relative performance of 4 filter media, including Ceraflow-50, as part of a reduction coagulation filtration (RCF) treatment process for the removal of hexavalent chromium (Cr(VI)) from groundwater. This evaluation was conducted at multiple well sites for a water utility in California.

  2. City Of Austin, Texas Installs A Total of 4,500 Pounds‐Per‐Day Of On‐ Site Hypochlorite Capacity Using the Microclor® OSHG System
    7/24/2018

    With 100 years of service history, Austin Water has seen enormous change in its 540 square miles of service area. Planning for the next 100 years has city and utility planners considering a diversity of sources, system resilience, and sustainability while being mindful of conservation goals. In the city’s newest water treatment plant, WTP4, Austin Water was able to combine those planning elements into a state‐of‐the‐art treatment plant. The plant, which is located on Lake Travis, is capable of treating 50 million gallons a day (MGD) with the ability to expand to 300 MGD.

  3. Clarification And Filtration Upgrades Using ACTIFLO Technology
    1/12/2017

    The City of Somersworth has a historical background dating back to the early 1900s when it became the first community to start using chlorine to disinfect it’s drinking water.

  4. Evaluation Of Filtration Media For High Rate Surface Water Filtration
    6/12/2018

    The existing water filtration facility in Clinton MA is a high rate, direct filtration process that has been on-line since 2006. The water filtration plant draws it raw water from the Wachusett Reservoir. Chemical feed systems are provided for chemically assisted filtration, pre-oxidation (potassium permanganate), coagulation, pH and alkalinity adjustment (sodium bicarbonate and sodium hydroxide), and disinfection (sodium hypochlorite).

  5. Ecomuseum Zoo: High Efficiency Filtration Reduces Turbidity & Maintenance Costs
    9/12/2017

    ​The Ecomuseum Zoo is home to the most impressive ambassadors of Quebec’s wildlife. All residents of the Ecomuseum Zoo are there for a special reason: orphaned, injured or born under professional human care, each of them could not return to the wild. Hence, they have found a forever home at the zoo.

  6. Midlothian, TX, Expands Water Treatment Plant With A Safe, Reliable Disinfection System
    7/24/2018

    When the City of Midlothian, Texas, was ready to expand their water treatment plant to accommodate a growing population, they carefully considered and investigated their water disinfection options.

  7. PFC Contamination: Issues And Answers
    11/10/2017

    PFCs are turning up in source waters and news cycles, drawing both public and regulatory concern. How pervasive is this group of emerging contaminants — namely PFOS and PFOA — and how might the saga unfold for utilities?

  8. Basin Nozzle Manifold Contacting System Installation Remediates Taste And Odor Compounds, Meets Disinfection Goals
    9/1/2018

    A water quality audit revealed that two of the largest drinking water plants in the City of Montreal were out of compliance with Quebec’s latest water quality rules. Both drinking water facilities were located in heavily populated areas; consequently, plant modifications had to be accomplished within their existing infrastructure footprints.

  9. Burnsville Becomes First Metro System With On‐Site Hypochlorite Generation
    7/24/2018

    When Linda Mullen took over as water superintendent in Burnsville in 2007, the city was in the process of adding surface‐water treatment to its existing plant. Burnsville began purchasing water from the nearby Kraemer Mining and Materials quarry, both to supplement its supply and to help the quarry meet discharge permits.

  10. EPA Providing Guidance For Drinking Water After Radiological Emergency
    1/17/2017

    What would happen if there was an emergency in the U.S. that caused radioactive material to contaminate drinking water supplies? What steps could your utilities and government take?