WRRCSR No.09:24:92 Granular Activated Carbon Treatment of Mililani Well Water: Phase II Study to Extend Effective Life of GAC, Six-Month Progress Report

Date
1992-10
Authors
Dugan, Gordon L.
Fujioka, Roger S.
Lau, L. Stephen
Takei, Gerald H.
Gee, Henry K.
McParland, Terra L.
Journal Title
Journal ISSN
Volume Title
Publisher
Water Resources Research Center, University of Hawaii at Manoa
Abstract
The aerated Mililani well water, which removed about 40% of TCP, and spiked deionized water, intended to reduce the level of natural background organics, both appeared to increase the volume of water passing through the minicolumns before breakthrough by nearly 40%. Likewise the carbon usage rates for the spiked deionized water and aerated Mililani well water decreased in comparison to untreated Mililani well water, except for the March 1992 minicolumn experiment, which was nearly the same. More minicolumn tests will need to be performed to ascertain if the March 1992 minicolumn results were reasonable or, possibly an anomaly. The minimum minicolumn carbon usage values of approximately 0.022 lb/1000 gal did not simulate field operation values which ranged from 0.135 to 0.150 lb/1000 gal; however a close correlation would not be expected. In addition, the aerated Mililani well water samples did not increase the weight of TCP and DBCP that was able to be adsorbed by the pulverized GAC. Thus, it seems apparent that background material (presumably organic or primarily organic material) may be utilizing adsorption sites. No apparent relationship existed for TC or NPOC removal before and after breakthrough. Further minicolumn experiments will be continued to substantiate the minicolumn experimental data collected to date.
Description
Keywords
water treatment, atomic absorption spectrophotometry, gas chromatography, mass spectrometry, granular activated carbon, minicolumn carbon, DBCP, TCP, Mililani Wells, Mililani Water Treatment Plant, Oahu, Hawaii
Citation
Dugan GL, Fujioka RS, Lau LS, Takei GH, Gee HK, McParland TL. 1992. Granular activated carbon treatment of Mililani well water: Phase II study to extend effective life of GAC, six-month progress report. Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC special report, 09:24:92.
Rights
Access Rights
Email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.