aquakin.operational_cost_index#

aquakin.operational_cost_index(aeration, pumping, sludge_production, mixing=0.0)[source]#

OCI (BSM1 form):

OCI = aeration + pumping + mixing + 5 × sludge_production

The original Copp (2002) index omits the mixing term (mixing=0); the updated open-loop benchmark adds the mechanical-mixing energy of the unaerated reactors, so the two conventions differ only by that term. Sludge_production is the time-averaged TSS mass flow leaving via wastage + the change in plant TSS inventory.

Parameters:

  • aeration (float)

  • pumping (float)

  • sludge_production (float)

  • mixing (float)

Return type:

float