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AWWA ACE69116
- Overcoming Operational and Implementation Challenges of the Stage 2 Disinfection Byproduct (DBP) Rule: Retrofitting WTPs for GAC
- Conference Proceeding by American Water Works Association, 11/01/2008
- Publisher: AWWA
$12.00$24.00
This powerpoint presentation begins by providing a brief overview of challenges to the Stage 2 Disinfection Byproduct Rule (DBPR) Compliance inPhoenix, and the City of Phoenix Treatment Philosophy. Background information is provided on the Union Hills Water Treatment Plant (WTP) case study, along with considerations for filter adsorbers atUnion Hills WTP, using declining rate filters for adsorption, challenges of constant rate filtrationconversion, granular activated carbon (GAC) replacement frequency, disinfection practice modifications, benefits of post-filter contactors overfilter adsorbers, the challenge of post-filter contactors, and separate processes facilitate optimization. Key findings include the following:regulatory requirements continue to challenge Phoenix areamunicipalities;City of Phoenix Master Plans do a good job at setting system-widestrategies;changes in conditions require modifications; site-specific tweaking necessary; and, therecommended solution often involves balance andcompromise between capital and O&M. Includes tables, figures.
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