Process optimisation of anaerobic digestion treating high-strength wastewater in the Australian red meat processing industry

Harris, Peter W. and McCabe, Bernadette K. (2020) Process optimisation of anaerobic digestion treating high-strength wastewater in the Australian red meat processing industry. Applied Sciences, 10 (21):7947. pp. 1-17.

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Abstract

This work represents and reviews a compilation of investigations into improving anaerobic digestion performance of high-strength wastewater in the Australian Red Meat Processing industry. The industry produces significant quantities of organic-rich wastewater which requires treatment prior to release to the environment. Anaerobic lagoons are a cost-effective method of waste treatment where land availability is not an issue; however, the high fat load in the wastewater can negatively impact the anaerobic lagoon system and result in compromised anaerobic digestion performance. This paper will discuss the importance of upstream primary pre-treatment and review a series of investigations focused on optimising digester performance and improving fat biodegradability. These studies include: 1. the effect of temperature and mixing; 2. the influence of feedstock trace element composition and supplementation, and; 3. the potential benefit from pre-treatments such as chemical, thermobaric, thermochemical and bio-surfactant. This paper discusses the implications of these findings for covered anaerobic lagoon operation and provides recommendations to promote optimum digester performance and future opportunities in adopting alternate anaerobic digestion technology options. Finally, the paper provides recent trends toward the use of other waste streams for co-digestion and discusses this in terms of digester optimization and technology options.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with Creative Commons: Attribution 4.0 license.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Agricultural Engineering (1 Aug 2018 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Agricultural Engineering (1 Aug 2018 -)
Date Deposited: 15 Feb 2021 06:02
Last Modified: 16 Feb 2021 04:08
Uncontrolled Keywords: biogas; bioenergy; waste management; slaughterhouse; abattoir; trace elements; agro-industrial; temperature; pre-treatment; co-digestion
Fields of Research (2008): 09 Engineering > 0904 Chemical Engineering > 090409 Wastewater Treatment Processes
09 Engineering > 0907 Environmental Engineering > 090703 Environmental Technologies
Fields of Research (2020): 40 ENGINEERING > 4004 Chemical engineering > 400410 Wastewater treatment processes
40 ENGINEERING > 4014 Manufacturing engineering > 401404 Industrial engineering
Socio-Economic Objectives (2008): B Economic Development > 85 Energy > 8505 Renewable Energy > 850501 Biofuel (Biomass) Energy
B Economic Development > 86 Manufacturing > 8601 Processed Food Products and Beverages (excl. Dairy Products) > 860109 Processed Meat Products
Identification Number or DOI: https://doi.org/10.3390/app10217947
URI: http://eprints.usq.edu.au/id/eprint/40942

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