Drinking Water Disinfection [Case Studies White Paper]

  1. Multi-Point Chlorination Process To Treat Raw Water Yields To A Multi-Barrier Chain Of Treatment Technologies
    4/11/2017

    For decades, a Winnipeg utility used a multiple point-chlorination process to treat raw water drawn from remote Shoal Lake. Concerns eventually arose about the potential presence of chlorine-resistant pathogens–Crytosporidium and Giardia–and residual disinfection byproducts, which coincided with encroaching development near the lake. The Clari-DAF system was selected and now removes 70 percent of the organics at the Winnipeg plant, which also improves filtration and extends the intervals between filter backwashes.

  2. 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.

  3. Monitoring Water Quality With UVC LEDs
    11/2/2015

    Rapid detection of changes in water quality is critical in water delivery systems, wastewater treatment, and industrial plants for process optimization, environmental regulatory requirements, and consumer health.

  4. Improving The Quality Of Tertiary Effluent For Indirect Potable Reuse With Geographic Constraints
    9/5/2018

    The Mazzei Sidestream Venturi Injection – Pipeline Flash Reactor System provides a feasible alternative for dissolution of ozone at the Clark County Water Reclamation District (CCWRD) in Las Vegas, because it allowed for flexibility in basin design to meet geographic site constraints.

  5. Filtration Avoidance in Surface Water - North Tahoe, California (Case Study)
    11/30/2011

    With its mountain beauty and deep, clear waters, Lake Tahoe is one of the most popular vacation spots in the California/Nevada area.

  6. Small UV Plant Is Designed To Address Cultural And Safe Drinking Water Needs Cost-Effectively
    10/28/2014

    BI Pure Water worked with University of British Columbia researchers and Lytton First Nation to develop a water disinfection system that addresses the needs of native communities, both cultural values as well as the basic necessity of clean drinking water.

  7. City Of Springfield, MO, Upgrades Disinfection System From Gas Chlorine To On‐Site Sodium Hypochlorite Generation
    7/24/2018

    In April 2013, City Utilities started up three Microclor Model MC‐1500 skid systems, each rated at 1,500 pounds per day of free available chlorine.

  8. Upgrading From Gas Chlorine To On-Site Hypochlorite Generation To Improve Safety And System Resilience
    9/20/2018

    By replacing gas chlorine with on-site hypochlorite generation, Nashville was able to improve the safety and longevity of its water plants to accommodate the growth of the “Heart of Country Music” far into the future. At a recent water conference, Glen Doss, Treatment Plant Manager stated, “In 2016, the last gas chlorine railcar left to large applause.” 

  9. Pilot Test For Arsenic, Color And Iron Shows Great Results
    10/1/2018

    The City of Riverdale was running into issues with arsenic, color and iron treatment system at their Well 4 site, so they conducted a pilot test with the help of Loprest.

  10. EPA Researchers Partner With WaterStep To Deliver Clean Water During Emergencies
    9/11/2018

    Following a disaster like the back-to-back hurricanes that hit Texas, Florida, and Puerto Rico in 2017, water systems can become flooded and unable to provide safe drinking water to communities. EPA researchers recognized the need for portable water treatment systems that can quickly and cost-effectively provide safe drinking water to affected communities following a disaster.