Contaminant Removal Case Studies and White Papers

  1. Cryptosporidium Removal From Commercial Swimming Pools
    5/28/2018

    A year long pilot study was performed at an indoor commercial pool in Geauga County Ohio. The testing included an extensive evaluation of common and widely available granular filtration medias and compared the performance results in real time. The intent of the study was firstly to compare the real time turbidity removal capabilities of the various medias and secondly assess the removal ability of cryptosporidium sized particulate (2-5 micron). This assessment also included a polystyrene microsphere challenge on selected well-seasoned medias to compare the ability of the medias to remove crypto sized particles.

  2. 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?

  3. Residual Control Technology Saves Millions Of Gallons Of Water While Maintaining Consistent Chloramine Residual Levels
    7/18/2018

    Like many cities within the Dallas-Fort Worth metroplex, the City of Coppell experienced water quality challenges at different periods throughout the year. In particular, the City had difficulty maintaining adequate chloramine residuals at the 1.5 MG Southwestern elevated storage tank during the warmer summer months when outdoor watering was restricted to conserve water.

  4. 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.

  5. Hendersonville Water Treatment Plant Features Innovative Disinfection System
    7/24/2018

    Hendersonville Utility District (HUD) serves one of the most populous suburbs of Nashville, Tennessee.

  6. Full-Scale Installation Report For Z-92® Uranium Removal – Morongo Del Sur, CA
    8/8/2018

    The Golden State Water Company selected WRT’s Z-92® Uranium Removal treatment system to reduce high concentrations of uranium in a single treatment system for three wells located in the Morongo Valley of California.  Since installation of the Z-92® Uranium Removal treatment system in Morongo del Sur in 2013, the uranium levels are being reduced to levels below the Maximum Contaminant Level (MCL).

  7. Conversion To On-Site Sodium Hypochlorite Generation Improves The Safety And Resilience Of Two Wastewater Reuse Plants With A Three-Year Economic Payback
    7/10/2018

    Aqua Engineers is a local Hawaiian company founded almost 40 years ago which delivers operations, engineering, and construction management to the water and wastewater industry throughout Hawaii. Also, as an owner and operator, Aqua Engineers is keenly focused on the return on investment for process equipment decisions, but also on the safety of its operators and surrounding community. Read the full case study to learn why Aqua Engineers chose the Microclor OSHG system provided by UGSI Solutions for both their sites in 2016.

  8. Building Resilient Drinking Water Treatment Operations For A Sustainable Water Future
    5/14/2018

    It's spring and the algae are in bloom, but harmful algal blooms are far from the only threats to drinking water. Fortunately, there are advanced treatment technologies to handle some of the most persistent contaminants today, including algal toxins, Cryptosporidium, and 1,4-dioxane.

  9. Wastewater Plant In Como, Italy, Upgrades To De Nora Ozone For Significant Savings
    9/13/2018

    The Lariana Depur wastewater treatment plant in Fino Mornasco, Italy, treats wastewater from multiple textile manufacturers in the Como region, known as the heart of the textile industry. Since 1994, ozone has been used effectively as a polisher to remove the dark blue-purple color — the result of the dyes used in the textile dyeing and printing process — from the water.

  10. Three Valleys Water District Chooses Low-Maintenance Enclosed Ammonia Feed System For Chloramination
    11/18/2016

    Three Valleys Municipal Water District (Three Valleys) is one of 26 water agencies that comprise the Metropolitan Water District of Southern California (MWD). Three Valleys is the primary source of supplemental water for the Pomona, Walnut, and East San Gabriel Valleys.