Drinking Water Disinfection [Case Studies White Paper]

  1. Generating Disinfectants From Water: Could In Situ Electrolytic Production Be The Future?
    3/31/2014

    Chemical disinfection using strong oxidants involves the transportation, storage, and handling of unstable and/or aggressive and hazardous chemicals. The production of oxidants at the location where they are to be used has therefore been a preferred option, especially in small-scale or remote installations. On-site electrolysis of NaCl for the local production of chlorine or hypochlorite, or the production of ozone-enriched oxygen by silent discharge has been standard for years.  However, it is possible to take the idea of producing chemical disinfectants locally a step further and look at in situ techniques, i.e. at devices, which produce oxidants in and from the water to be treated. By Dr. Samuel Stucki, Scientific Consultant to Innovatec Gerätetechnik GmbH,Germany

  2. Water Utility Turns To State-Of-The-Art UV Technology To Help Address Drought
    11/24/2014

    The 2013 year was the driest in recorded history with many areas of the San Joaquin Valley reporting groundwater levels more than 100 feet below previous historical lows. 

  3. Tank Shark® Active Tank Mixing Proven To Be Superior To Dedicated Tank Inlet/Outlet Design
    7/10/2018

    San Jose Water Company (SJWC) provides drinking water for over a million people in the greater San Jose Metropolitan region and is a recognized leader in drinking water treatment and distribution system water quality management. With over 90 water storage facilities in service, planned maintenance and rehabilitation of capital assets is a key component of SJWC’s CIP program.

  4. 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.

  5. WEDECO UV Disinfection Produces Highly Purified Water In Silicon Valley
    5/7/2015

    With diminished rainfall, a depleted aquifer basin, near-empty recharge ponds, and an earthquake-vulnerable aqueduct system, the Santa Clara Valley Water District (SCVWD) in San Jose, CA, required additional water supplies to maintain regional economic vitality for its growing community.

  6. Encore® 700 Chemical Metering Pumps Provide SNWA With A Decade Of Flawless Service At River Mountains
    8/15/2016

    Built in 2002, Southern Nevada Water Authority’s (SNWA) River Mountains Water Treatment Facility is a state-of-the art  water treatment facility that delivers 300 million gallons per day and was designed to be expanded to deliver up to 600 million gallons per day of treated water in the future.

  7. 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.

  8. Systems Work In Series To Increase Filter Run Times, Reduce Water Use, And Improve Finished Water Quality
    3/25/2015

    The city of Florence, Colorado Water Treatment Plant (WTP), located 75 miles south of Denver, uses blended surface water taken from the city’s southernmost water reservoir.

  9. 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.

  10. 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.