Contaminant Removal Case Studies and White Papers

  1. Granular Activated Carbon Removes PFOA From Drinking Water
    12/7/2016

    In the fall of 2015, a small village on the border of Vermont in New York State, tested positive for Perfluorinated Compounds (PFCs), specifically Perfluorooctanoic Acid (PFOA), in the municipal drinking water. The influent levels of PFOA in the water were above 600 ng/L, and thus considered harmful to village residents. Realizing that PFOA was on the U.S. EPA Contaminant Candidate List, the Village solicited the services of engineering firm CT Male Associates to investigate treatment options and provide a treatment system.

  2. San Diego Plant Cuts THM Levels In Half
    8/3/2017

    The 34 MGD Otay Water Treatment Plant in San Diego, California serves a population of approximately 200,000. It is a conventional treatment plant that uses coagulation, flocculation, sedimentation, filtration and disinfection. The plant receives raw water from two different sources — imported water from the Colorado River and runoff water from three local reservoirs.

  3. Chlorine Gas Replaced By Dry Calcium Hypochlorite System In New York Suburb
    5/19/2016

    Town of Greenburgh Consolidated Water District No. 1, serving Greenburgh in Westchester County, west of New York, serves approximately 39,993 people via 11,500 service connections, pumping seven million gallons per day on average.

  4. 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.

  5. Rural Water Corporation Solves Chloramine Residual Issue
    8/15/2016

    Bluebonnet Rural Water Corporation (BRWC), a subsidiary of Bluebonnet Electric Cooperative, serves approximately 1,094 water meters in northeast Washington County, TX, but had a water storage problem not unfamiliar to even the largest water utilities in Texas.

  6. Hassle-Free Chlorination For Large Municipalities
    1/12/2016

    For Robert Stout, general manager of Mid-Arkansas Utilities (MAU), the primary water provider for a three-county rural area spanning 2,220 square miles, the reason to switch to a dry calcium hypochlorite feeding system was simple, “using chlorine gas was not only dangerous for us, it was a big hassle and time-consuming.”

  7. Bulk Hypochlorite Disinfection System Replaced With On-Site Hypochlorite Generation System Saving About $160,000 Per Year In Materials
    8/15/2016

    Originally built to treat 10 million gallons per day (MGD), the Quail Creek Water Treatment Plant in Washington County, Utah, now has an operational capacity of 60 MGD and a design capacity of 80 MGD.

  8. Water Works Commission Lowers Risk Profile By Converting To A Safer Disinfectant
    8/15/2016

    Chatsworth Water Works Commission provides both water and wastewater services to the 5,000 residents of the cities of Chatsworth and Eton, GA.

  9. 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.

  10. Mitigating Environmental Impact Of Gold Mine’s Wastewater Through Ozone Oxidation And Aquifer Re-injection
    4/27/2017

    Installing and operating an ozone oxidation system for wastewater remediation at a gold mine located in a remote region of Alaska is full of challenges.