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Description: The micro-brewery industry has expanded rapidly in recent years, creating challenges in wastewater management due to high variability in both organic and hydraulic loading. A field study was conducted at a Craft brewery in Eastern Ontario, Canada, to optimize a full-scale wastewater treatment system. The system consists source separation of high-strength organics for off-site co-digestion with dairy manure and onsite aerobic treatment of wastewater utilizing Moving Bed Biofilm Reactor (MBBR) technology. Biomethane potential (BMP) tests were conducted on the high-strength slurry to optimize methane production. The wastewater system was optimized for carbon removal with respect to residence time, biofilm development and effluent recycle. Operational issues of foaming and filamentous sludge bulking arose due to variable food/microorganism ratios and hydraulic residency times. Adding effluent recycle decreased internal residence times and resulted in an increase in biofilm density and effective control of foaming and bulking issues.

Keywords: micro-brewery wastewater, filamentous bulking, aerobic treatment, MBBR, biomethane potential
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Waste Management 4 - Agri-food Residues and Growth Media

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Language 1: en
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Rights: Canadian Society for Bioengineering
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