GPS-X Technical Reference

Influent Models 74
Figure 5-11 - CN Library tsscod Model Particulate Inert Calculation
Figure 5-12 - CN Library tsscod Influent Soluble Components Calculation
CHEMICAL DOSAGE INFLUENT OBJECT
The chemical dosage influent object (red arrow) is used to characterize streams which are not
typical wastewater inputs, but rather chemical or water inputs to a wastewater treatment process.
The models found in the chemical dosage influent have been developed specifically for this
purpose, and are set up for easy conversion of typical chemical components into the state
variables used in the biological models. The flow is specified only through the Data option as
described in Figure 5-5.
Acetate
The acetate influent model can be used to simulation the addition of acetate to the
treatment process. The acetate dose (as acetic acid) can be entered as a percentage of
purity, or in a variety of units (mol acetate/L, g (acetate*COD)/m 3 , g(acetate)/L, etc.), by
selecting from the drop-down units menu (Figure 5-13). The COD equivalent of the
acetate dose is automatically converted to slf if asm2d or newgeneral have been chosen
for the local biological model or ss (readily biodegradable substrate) for all other local
biological models.
GPS-X Technical Reference