Drinking Water Treatment Case Studies and White Papers

  1. Town Of Kittery, Maine Relies On Lime Feeders For pH Control For More Than 25 years
    6/26/2017

    The Francis L. Hatch water filtration plant is in the coastal town in York county Maine and has an average capacity of 2.6 MGD. This is a surface water plant that utilizes hydrated or “slaked” lime (calcium hydroxide) to maintain the pH level around 7.0. For over 25 years, the district has used two of the UGSI Chemical Feed model 32‐055 Feeders to mix dry hydrated lime with water to create a lime slurry solution that can then be added to the finished water treatment.

  2. South Australia’s $403 Million North South Interconnection System Project (NSISP) Uses A “Super” Valve To Perform In A Variety Of Extreme Conditions
    10/3/2014

    NSISP is one of South Australian Water Corporation’s (SA Water) biggest infrastructure projects undertaken in Adelaide metropolitan to connect the north and south drinking water distribution systems and to increase access to their desalination plant. The project included the construction of 32 km of pipeline through metropolitan main roads and suburban inner streets. This is no small feat and getting it done right meant fitting together a lot of different moving pieces.

  3. ORP Sensors – Are They Really The Best Thing “Since Sliced Bread”?
    12/12/2016

    There have been many publications lately that claim universal appeal of the ORP sensors and their applicability across the board. This concerns me, because the authors sometimes forget to mention some well-known practical limitations of the method, let alone the realities of water treatment applications potentially influencing the sensor performance.

  4. Point Versus Continuous Level Measuring Technologies
    11/7/2017

    While point level measuring approaches are regarded as simple and user friendly, they lack the capabilities of more sophisticated continuous measuring instruments.

  5. Known For “Healing Waters,” Pagosa Springs Restores Its Potable Water System With Help From SolarBee® Mixers
    10/8/2014

    Located in the high desert plateau of southwestern Colorado, Pagosa Springs is famous for its geothermal hot springs, which draw visitors worldwide to soak in the mineral-rich water. The Utes called the sulfur springs “Pah-gosah,” meaning “healing waters.” You might say the town’s potable water system is healed now as well.

  6. NE Alabama Water District Case Study
    12/22/2011
    Northeast Alabama Water District (NEAW) services 15,200 connections within 2,052 square miles, resulting in a very large distribution area.
  7. WaterGEMS® Prioritizes Manila Water Facilities For Disaster Resiliency And Contingency Plan
    2/1/2018

    Located on the Pacific Ring of Fire, the Philippines experience frequent earthquakes, volcanic eruptions, and typhoons that cause catastrophic losses. Manila Water Company, Inc., prepared a Natural Calamity Risk Resiliency and Mitigation Masterplan to ensure that there is a reliable water supply in the event of a natural disaster for the service area covering the East Zone of Metro Manila (the National Capital Region) and Rizal Province. 

  8. How To Filter Iron & Manganese From Well Water With Manganese Dioxide Filter Media
    1/4/2019

    There are various treatment processes that are used to remove iron and manganese from ground water for potable water supplies. Iron and manganese are typically found in groundwater in a dissolved state and the water may appear clear. While there are various less common treatment methods used (such as ion exchange), most treatment systems for iron and manganese oxidize the ferrous state (clear iron) to a ferric state so the solid particles can then be filtered out. 

  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. How To Best Reduce DBPs: A Comparison Of Centralized And Decentralized Treatment
    9/4/2013

    Air stripping and granulated activated carbon were applied at different points in the distribution system to evaluate effective removal of disinfection byproducts (DBPs). By Chandra Mysore, Ph.D., James Fletcher, Bill Roberts, and Mark Xerxis, GHD Inc.