Sensors for anaerobic digestion: An overview

New and existing technologies for the monitoring of anaerobic digestion processes are presented. Emphasis is given to the way these sensors can provide insight in the ongoing (bio-)processes. Attention is drawn to a number of practical problems associated with the use of sophisticated sensors in the harsh (dirty) conditions of wastewater treatment processes. The use of autocalibration and built-in sensor checks, cleaning systems and the recent implementation of reliable sample preparation units is illustrated.

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