AWWA WQTC69481
Bang for the Buck: Optimizing Coagulation and GAC for TOC Removal
Conference Proceeding by American Water Works Association , 11/01/2008
Seidel, Chad; Talabi, Binga; Acquafredda, Stephen; Tang, George; Jensen, Jeanne; Ramarui, Abel
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About This Item
Full Description
This powerpoint presentation
evaluates the economic impacts of
enhanced coagulation and pH
depression on granular activated carbon (GAC) service life. Central Arizona Project (CAP) water quality assessment and
operational assessment are presented, along with the
coagulation and GAC adsorption model and
bench-scale experiments for model validation,
validated model applications and sensitivity
analysis involving
TOC and pH, and
coagulant dose. Study recommendations include the following:
implement pH depression and/or
enhanced coagulation to provide
optimization opportunity,
particularly during high raw water TOC
conditions;
utilize the integrated coagulation/GAC
model to develop operational
strategies for cost optimization -
effect of water quality
30, and
effects of GAC media and other chemical
costs. Includes tables, figures.
