USEPA Arsenic Demonstration Project - Stewart, Minnesota - Arsenic and Iron Treatment System

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Courtesy of Adedge Water Technologies, LLC

AdEdge Technologies Inc. (AdEdge) was selected in 2004 by the U.S. EPA as part of the Round 2 Arsenic Demonstration Program to implement full scale arsenic treatment for the city of Stewart, Minnesota. This public water system serves a community of approximately 600 people with average daily demand of 60,000 gallons per day. AdEdge was selected from the proposed alternatives by the host site and contracted by U.S.EPA to perform a turnkey project including design, fabrication, permitting, installation, and startup of the treatment facility. The site received some supplementary grant money from USDA for additional infrastructure, electrical, chemical upgrades and a new treatment building. The AdEdge team including Bolten & Menk Engineers and KHC Construction prepared the design documents and obtained all regulatory permits from the Minnesota Department of Health (MDH) to install a two-stage treatment system to reduce the high iron, manganese, and arsenic levels to below the new standards from the two wells serving the site. The system utilizes AdEdge’s granular ferric oxide (GFO) adsorption system using Bayoxide E33®. Building and system upgrades were also performed prior to arrival of the equipment. The system was installed and placed into full time operation in January, 2006.

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