Biogas Flow Measurement for Anaerobic Digestion Applications

A major sewage treatment facility sought to upgrade its four digesters by implementing a system to monitor biogas production from sewage sludge.

Challenges included fluctuation of biogas volume and pressure due to seasonal changes and variations in sludge input as well as the requirement of withstanding low pressures, moistures, particulate content, and flow rate fluctuations without compromising accuracy or reliability.  

This short application note examines how ABB delivered thermal mass meters to overcome these challenges and deliver 1% accuracy with an impressive turndown rate of 150:1, making them the precise tool to do the job. 

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