Drinking Water Disinfection [Case Studies White Paper]

  1. Monitoring Chlorine Residuals For RO Membranes - ORP Versus Chlorine Analyzers
    7/14/2015

    In processes where disinfection is required chlorine is the most common and economic disinfectant followed by sodium hypochlorite (liquid bleach). It is important to disinfect the RO feedwater to avoid fouling of the membranes which results in poor performance and frequent cleaning.

  2. Disinfection Performance Testing Of High-Efficiency Ultraviolet Water Treatment Chamber
    4/16/2014

    This is the second in a series of three white papers describing the design and performance of the NeoTech Aqua ReFlex™ treatment chamber. The first describes in detail the theoretical basis for the very high efficiency demonstrated by the chamber. The third paper describes how this chamber design leads to some highly desirable operational advantages beyond just energy ad cost reduction. By J. R. Cooper, Ph. D. and Gwynne Cavender, NeoTech Aqua Solutions, Inc.

  3. ORP Based Measurement Of Oxidizing Disinfectants In Aqueous Solutions
    9/22/2011

    Oxidizing antimicrobials, such as chlorine, are common disinfectants used to treat water. Test strips, DPD kits, and colorimeters are currently the most popular methods for determining the relative disinfecting power of oxidizing antimicrobial agents in these applications. By Myron L Company

  4. 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.

  5. Change To 3-Precursor Vacuum Generator-Feeder For ClO2 In WTP, From Batch Generator Pumping, Cuts Chemical Costs, Gains Plant Management Of Equipment
    1/22/2018

    The water treatment plants (WTP’s) manager for the city of Midlothian, TX reports significant reduction in chemical costs, gaining new management control for their generation and feed equipment, and ending a pesky maintenance burden, by switching to three-precursor vacuum generator-feed, from batch-generator-pumping, for introducing chlorine dioxide (ClO2) into their 8 MGD plant #2. As a result, he plans to make the same change at their 12 MGD plant #1.

  6. Australian City Installs Microclor On‐Site Sodium Hypochlorite Generation System
    7/24/2018

    Bathurst is the home of the Bathurst 1000 Race, the largest NASCAR-style “touring car” race in Australia. On race day, tens of thousands of additional visitors tax the capacity of the Bathurst 5 million-gallon-per- day wastewater treatment plant. The diligence and capability of the treatment staff allows the plant to meet the challenge every year. 

  7. Philippines Potable Water System Improvement Project Uses Filter Underdrain Blocks To Improve Backwash Efficiency
    10/9/2018

    Founded in 1997, the Manila Water Company (MWC) serves the potable water needs of more than five million residents of the Philippines capital and cities to the east. The company serves as the private partner in a public-private partnership with the Philippines government in operating the Metropolitan Waterworks and Sewerage System for Metro Manila’s East Zone.

  8. Using Ozone To Remove Micropollutants From Wastewater
    12/1/2014

    Micropollutants in our wastewater are a growing problem and so is the concern for the long-term hazard to the ecosystem.

  9. 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. 

  10. California Mountain Town Cuts Salt Use, Doubles Disinfection
    1/24/2011

    The wastewater treatment facility of the remote mountain resort community of Pinecrest Lake bears the brunt of spring runoff and increased summer demands in the area's beautiful surroundings.