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    Fate and transport of organo-chlorine compounds within the vadose zone during artificial recharge of chlorinated effluent

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    Author
    Chahbandour, John, III, 1960-
    Issue Date
    1991
    Keywords
    Hydrology.
    Environmental Sciences.
    Advisor
    Wilson, L. G.
    
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    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
    The effectiveness of soil aquifer treatment (SAT) to renovate both tertiary (Site 1) and secondary (Site 2) wastewater was investigated using two small recharge basins. Suction lysimeters collected soil water samples at various depths within the vadose zone from 0.5 to 20.0 feet. Total organic halide (TOX) and dissolved organic carbon (DOC) were evaluated to determine SAT efficiency in removing TOX and DOC found in the source waters. Approximately 77% of the TOX was removed from the tertiary wastewater during percolation through the vadose zone at Site 1, while the secondary source water underwent a maximum reduction of approximately 55% at Site 2. At Site 1 there was mobilization of in-situ humic materials causing increases in DOC concentrations at depth. These decreased with time and after 83 hours DOC concentrations at 20 feet were 51% of inflow concentration. At Site 2 DOC removal ranged from 44 to 73% at a depth of 15 feet for three flooding events. Discrepancies between the two locations are thought to reflect lithologic differences and dissimilarities in hydraulic loading rates.
    Type
    text
    Thesis-Reproduction (electronic)
    Degree Name
    M.S.
    Degree Level
    masters
    Degree Program
    Graduate College
    Hydrology and Water Resources
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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