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Aeration as a pretreatment alternative to extend the life of granular activated carbon at the Mililani plant : a laboratory study

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Item Summary

Title: Aeration as a pretreatment alternative to extend the life of granular activated carbon at the Mililani plant : a laboratory study
Authors: McParland, Terra L.
Issue Date: Dec 1992
Publisher: Water Resources Research Center, University of Hawaii at Manoa
Citation: McParland TL. 1992. Aeratoin as a pretreatment alternative to extend the life of granular activated carbon at the Mililani: a laboratory study. Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC unedited report, 1992-02.
Series/Report no.: WRRC Unedited Reports.
1992-02
Abstract: Since actual carbon usage is much greater than predicted at the Granular Activated Carbon (GAC) plant in Mililani, operational costs are higher than estimated. Therefore, diffused aeration and mechanical mixing were examined as possible pretreatment alternatives for removing TCP and DBCP from Mililani groundwater before it enters the GAC plant. Various batch and continuous flow aeration configurations were examined by altering the water heights, air flows, and water flows. The amounts of TCP and DBCP in the Mililani water decreased after aeration pretreatment. Minicolumn experimental results show that the throughput volume before the breakthrough was increased and carbon usage rates were decreased. Therefore, the effective life of the GAC increased. The carbon capacity, i.e. the amount of pesticide adsorbed by the GAC, did not increase after aeration. Therefore, unknown background material not affected by aeration may be utilizing adsorption sites.
Description: Thesis (M. S.)--University of Hawaii at Manoa, 1992.
Includes bibliographical references (leaves 130-133).
University of Hawaii at Manoa: Has both book and microform.
Sponsor: Board of Water Supply, City and County of Honolulu; contract no. C09012
Pages/Duration: xii +133 pages
URI/DOI: http://hdl.handle.net/10125/21913
Rights: All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections:M.S. - Civil Engineering
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