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    REMOVAL OF BOD AND METAL IONS FROM DAIRY PROCESSING WASTEWATER

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    azu_etd_mr_2016_0244_sip1_m.pdf
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    Author
    Wu, Ben Heng
    Garcia, Ismael
    Pyrek, Austin
    Tolson, Tate
    Issue Date
    2016
    Advisor
    Ogden, Kimberly
    
    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
    An anaerobic membrane bioreactor (MBR) unit was to design to remove 98% of BOD, COD, and TSS from a dairy wastewater processing stream at an influent flow rate of 500,000 gal/day. The hydraulic retention time of the MBR unit was determined to be 4 hours and the sludge retention time of the MBR unit was determined to be 60 days. Methane produced by the anaerobic process will be recaptured at 67% efficiency and will reused as a heat source in the plant. Metal ions will be removed from the wastewater through electrodialysis and the effluent concentration reaches EPA standards. An evaporation pond to deal with the brine stream from the electrodialysis has been designed with a volume of 4250 m3, a fill time of 41 days and an evaporation time of 37 days. The capital costs associated with the plant design is $11,000,000 with the evaporation pond and $9,000,000 without the evaporation pond. Assuming the filtered water is sold, the breakeven point for the design without the evaporation pond is 50 years. Although target concentrations can be reached with MBR technology, we do not recommend utilizing this design until pilot scale tests can be done.
    Type
    text
    Electronic Thesis
    Degree Name
    B.S.
    Degree Level
    Bachelors
    Degree Program
    Honors College
    Chemical Engineering
    Degree Grantor
    University of Arizona
    Collections
    Honors Theses

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