Division Description

Implementation of a manual and/or automatic monitoring system to:

• ensure a stable digester operation;

• minimise operational difficulties, such as foaming, which may lead to odour emissions;

• provide sufficient early warning of system failures which may lead to a loss of containment and explosions.

This includes monitoring and/or control of key waste and process parameters, e.g.:

• pH and alkalinity of the digester feed;

• digester operating temperature;

• hydraulic and organic loading rates of the digester feed;

• concentration of volatile fatty acids (VFA) and ammonia within the digester and digestate;

• biogas quantity, composition (e.g. H₂S) and pressure;

• liquid and foam levels in the digester.