Benchmark Simulation Model 2 (BSM2)
The BSM2 layout includes BSM1 for the biological treatment of the wastewater
and the sludge treatment. A primary settler, a thickener for the sludge wasted from the BSM1 clarifier, a digester for
treatment of the solids wasted from the primary clarifier and the
thickened secondary sludge as well as a dewatering unit have been also added. The liquids collected
in the thickening and dewaterign steps are recycled ahead of the primary settler.
An important part of the development of BSM2 has been to implement the ADM1
model for the anaerobic digester. This has implied some slight changes with respect to the original
version of ADM1 as well as the development of calculation procedures in order to have a reasonable calculation time for the whole BSM2 plant.
Further details on that section can be found in the ADM1 section
Schematic layout of BSM2