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    Anaerobic digestion enhancement : impact on the volatile solids reduction and biogas production within municipal anaerobic digestion systems via routine bioaugmentation with a biocatalytic microbial and enzyme consortium

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    Lee_royalroads_1313O_10719.pdf (4.710Mb)
    Date
    2020-12-02
    Author
    Lee, Jonathan Raymond
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    Subject
    Anaerobic digestion; Bioaugmentation; Biogas; Biosolids; Sustainability; Wastewater
    Abstract
    Wastewater Treatment Plants (WWTPs) frequently use anaerobic digestion (AD) to break down organics to reduce the total volume of biosolids produced. As population increases, cost of biosolids disposal increases while regulatory limits tighten. Bioaugmentation is an innovative process that enhances the biological activity within AD systems to improve performance through the addition of biocatalytic compounds (BC). Currently there is a knowledge gap regarding how the routine use of BCs, containing a consortium of bacteria and enzymes, applied directly within the AD system can affect the system’s performance and its by-products (biogas and biosolids). This study reviews the impact of routine bioaugmentation applications using a commercial grade BC on an AD system. An analysis of two full-scale AD systems inoculated with said BC has been completed to determine impacts on biosolids, and biogas production. This study provides significant information substantiating the claim that bioaugmentation enhances AD performance and long-term economic viability.
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    https://viurrspace.ca/handle/10613/23440
    http://dx.doi.org/10.25316/IR-15336
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