Gaia EnviroTech AD Technology significantly outperforms design

Dec 6, 2022 | Biodigester

Biogas data collected from the plant (dark green) shows it has exceeded expectations based on the early laboratory testing (orange) to determine the biomethane potential (BMP) for the feedstock. Biogas methane content (yellow) has remained relatively steady throughout the trial period, sitting at approximately 60%. Daily feed rate (light green shaded) largely determined biogas production (dark green), but also indicates the maximum loading rate has yet to be achieved.

The graph above illustrates the enhanced methane production rates exhibited by a pilot-plant Anaerobic Digestion (AD) plant when compared to the initial expectations based on laboratory testing of the feed material. The preliminary laboratory biomethane potential (BMP) testing produced an expected methane rate of 0.45 m3 methane/kg VS, however the full-scale plant averages 0.60 m3 methane/kg VS, and may indicate that the multistage system is providing additional efficiencies not expected from standard single-tank operation.

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Modular in design, the Gaia EnviroTech anaerobic biodigester is both highly configurable and efficient. Download the technology profile to learn more.

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The system in this case study was installed in November 2018 as a 12-month research and development project to establish viability of an anaerobic digestion plant designed to convert dairy effluent to energy and minimise odour. 

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This case study displays to results of an AD trial on both whey and permeate at a semi-commercial level in an Australian setting.

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