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AWWA WQTC69345
- Treatment Plant Modifications to Improve Drinking Water Quality
- Conference Proceeding by American Water Works Association, 11/01/2008
- Publisher: AWWA
$12.00$24.00
The City of Arlington began experiencing atypical water quality problems in1999 with the introduction of ozonation and biofiltration to the conventionaltreatment processes. These problems included high chloramine residual decay rates, andsystem nitrification and manganese in the finished water that were linked to waterproduced at the Pierce-Burch South Water Treatment facility. After reviewing existing data and literature, and pilot plant and "bottle" testing, it was determined thatimprovements could be made to the water quality through treatment plant modifications in both design and process that included the following:modifications to the chemical feed points;process changes to how plant biofilters are operated; and,changing the biofilter backwash to non-chloraminated water. Includes table, figures.
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