AWWA JAW39284

The Information Collection Rule (ICR) will require that some utilities perform disinfection byproduct (DBP) precursor removal studies. The rapid small-scale column test (RSSCT), a bench-scale granular activated carbon (GAC) test designed to reduce time and costs associated with field-scale studies, has been proposed as an alternative to evaluate GAC performance for the ICR. RSSCT scaling equations maintain similitude with full-scale GAC systems, and therefore the RSSCT directly assesses the concentration breakthrough in a full-scale GAC column. A review of past studies shows that the RSSCT has successfully predicted field-scale performance for the control of natural organic matter and DBP precursors. The results of a current study emphasize the importance of obtaining a representative batch water sample for the RSSCT. A cost analysis based on using GAC to satisfy stage 1 and stage 2 requirements of the Disinfectants/Disinfection By-Products Rule suggests that minimizing empty bed contact time will reduce capital costs associated with GAC contactors. Includes 29 references, tables, figures.

Product Details

Edition:

Vol. 87 - No. 5

Published:

08/01/1995

Number of Pages:

12

File Size:

1 file , 980 KB