Drinking Water Disinfection Resources
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On-Site Sodium Hypochlorite Generation Maintains Consistent Chloramine Disinfectant Residual At A Remote Tank
5/7/2019
Purissima Hills Water District (PHWD), a county water district, provides chloraminated water service to two-thirds of the town of Los Altos Hills, adjacent to the city of Palo Alto in Northern California. With remote tank locations, low population density (6,800 people) and low water demand (1.61MGD), PHWD is constantly challenged to maintain consistent disinfectant residual levels while simultaneously balancing the safe delivery of chemicals to its tank site at an affordable cost.
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Treatment of Groundwater Contaminated With 1,4-Dioxane - Tucson, Arizona
5/1/2019
The TrojanUVPhox installation at Tucson's Advanced Oxidation Process Water Treatment Facility treats 1,4-dioxane and produces water that is blended and then treated at the neighboring Tucson Airport Remediation Project facility.
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Automated Disinfectant Generation And Control Systems Produce Consistent Residual Levels In Aqua Pennsylvania’s Distribution System
4/16/2019
Aqua Pennsylvania (Aqua PA), an Aqua America subsidiary, serves more than 1.4 million people in 32 counties across Pennsylvania. Aqua PA has significant experience using chloramine chemistry to mitigate trihalomethane (THM) disinfection byproduct formation in its many distribution systems.
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City Of San Diego Water Plant Switches From Chlorine Gas To On-Site Hypochlorite Generation To Reduce Risks, Improve Safety And Decrease Costs
4/16/2019
With virtually no local water sources available for use, the City of San Diego relies on water from the Metropolitan Water District, which imports its water from the Colorado River and the California State Water Project. The two massive water projects bring water from other watersheds and regions hundreds of miles to the north and east.
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A New Way To Kill Legionella
1/10/2019
Advanced oxidation provides an all-in-one solution that supports the complete eradication of Legionella in a water system, while also preventing its regrowth.
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Akron’s Path Toward An Intelligent Water Network Reduces Chemical Dosing While Improving Water Quality
11/8/2018
When water demand declines, water quality and utility budgets can suffer. When the situation arose in Akron, OH, a smart solution emerged.
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A Multi Process Approach With One Single Solution
10/22/2018
A joint effort between the city of Hollister, the San Benito County Water District and the Sunny slope County Water District, the group proposed the West Hills Water Treatment Plant (WHWTP) project to improve drinking water quality, water supply reliability, and to balance regional water resources in the Hollister Urban Area (HUA). Historically, HUA relied primarily on local groundwater basins for meeting their drinking water demands. While groundwater met all drinking water regulations, it is high in minerals and hardness that often resulted in scaling and the need for further conditioning.
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California Dreamin’? Pilot Study Makes Treating Arsenic, Manganese And Iron A Reality (Loprest)
10/12/2018
A pilot study was conducted for arsenic, manganese, and iron treatment system at a well site. The onsite pilot test demonstrated the performance of the Loprest Water Treatment Company treatment process.
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Pilot Test For Manganese Removal Using Manganese Greensand (Loprest)
10/11/2018
Loprest has been designing and fabricating manganese removal systems using manganese greensand for over forty years. Drawing on that experience; filtration rates, run times, backwash procedures, chemical dosage rates, etc. are all established by theoretical calculations and history. Therefore, Loprest’s goal in this pilot study was to conduct uninterrupted operation per bid testing procedures and document the results.
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Is Coagulation Followed By Filtration Viable To Remove Arsenic When Raw Water Arsenic Levels Are High? (Loprest)
10/9/2018
A pilot study hoped to demonstrate "proof of concept" if coagulation followed by filtration was a viable technology to remove arsenic when raw water arsenic levels are high.