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    Chemical coagulation of molecular weight fractions from dissolved organic matter

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    azu_td_1342643_sip1_m.pdf
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    Author
    Bedessem, James Michael, 1966-
    Issue Date
    1990
    Keywords
    Engineering, Sanitary and Municipal.
    Environmental Sciences.
    Advisor
    Amy, Gary L.
    Sierka, Raymond A.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    Chemical coagulation of eighteen groundwater samples from the Santa Ana River Groundwater Basin was evaluated on the bench scale to determine its viability for treating these low quality groundwaters to current USEPA drinking water standards. The color and organic matter in both raw and treated water samples were characterized according to UV absorbance and DOC molecular weight fingerprints. Alum coagulation with 5 mg/L as Al successfully treated raw waters with color of up to 60 pcu and 190 mug/L THMFP to meet the standards of 15 pcu and 100 mug/L for color and THM, respectively. Variations of the coagulation process which showed merit were pH modification, pre-ozonation, and using a cationic polymer, Magnifloc 573C, as a sole coagulant. Coagulation preferentially removed high-molecular-weight material which was responsible for causing the greatest degree of color. These color bodies were not, however, responsible for the majority of the THMFP.
    Type
    text
    Thesis-Reproduction (electronic)
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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