Drinking Water Disinfection [Case Studies White Paper]

  1. On-Site Hypochlorite System Delivers Historic Efficiency Levels
    9/29/2018

    In one of Pennsylvania’s three original counties, water has played an integral – even historic – role in the region’s development.

  2. A Rosemount Chlorine Analyzer Proves Just The Job For Seawater Duty At Dow's Terneuzen Site
    4/19/2010

    The Dow Benelux site in Terneuzen, the Netherlands, uses seawater for process cooling. Environmental regulations require careful control of the concentration of chlorine added to control microbial fouling. The existing chlorine measurement system had become outdated, so after stringent tests Dow decided to replace it with a Rosemount Model TCL analyzer from Emerson Process Management.

  3. 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.

  4. Drinking Water Disinfection - Coquitlam Water Treatment Plant, British Columbia (Case Study)
    11/7/2011

    In 2005, in response to changes to the Canadian Drinking Water Quality guidelines, the Greater Vancouver Water District Board approved a proposal to upgrade the Coquitlam WTP with UV disinfection technology to act as the primary means of disinfection.

  5. 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.

  6. Ohio Water Plant Finds Effective Alternative To Chlorine Gas
    5/14/2013

    For many years, Huber Heights, OH, searched for an effective and affordable way to eliminate gaseous chlorine (Cl2) use at its 4.46 MGD Needmore Road Water Treatment Plant. An innovative dry calcium hypochlorite makeup and delivery system now provides a safer disinfection method for operators and the community.

  7. Clari-DAF Pretreatment System Reduces Chemical Consumption, Doubles Treatment Capacity
    3/25/2015

    Together, two water treatment plants in Boulder, CO, have the capacity to treat 55 million gallons per day (MGD). When severe drought conditions restricted the source water supply of the Betasso WTP, the city decided to expand the capacity of the Boulder Reservoir Water Treatment Plant (WTP).

  8. California Dreamin’? Pilot Study Makes Treating Arsenic, Manganese And Iron A Reality
    10/12/2018

    The City of Paramount conducted a pilot study for arsenic, manganese and iron treatment system at their Well 15 site. The onsite pilot test was designed to demonstrate the performance of the Loprest Water Treatment Company treatment process proposed for the new treatment plant.

  9. 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.

  10. Conversion From Gas To Liquid Disinfection Yields Significant Improved Water Quality And Cost Savings
    8/15/2018

    In 2006, the Greenwood, South Carolina Commissioners of Public Works became only the fourth U.S. water utility ever to receive Phase IV “Excellence in Water Treatment” recognition from the Partnership for Safe Water. Phase IV is the highest possible level of performance that can be achieved in the Partnership program and signifies optimized plant performance.