GPS-X Technical Reference

229 Attached-Growth Models
This conceptualization is shown in Figure 7-9. The concentration of each particulate
state variable is converted to volume based on the dry material content of biofilm and its
density, both input by the user. When the volume of each biofilm layer is filled (based on
maximum biofilm thickness and number of biofilm layers) the next layer begins to fill.
When the biofilm thickness starts to approach the specified maximum, increasing
detachment of biofilm will occur.
Mathematical Model
Figure 7-9 – Conceptual Diagram of the RBC Model
The mathematical equations used within each layer of the biofilm are provided in the
corresponding Model matrix (For example, see Appendix A for the mantis model). The
equation used for the diffusion of the state variables from the bulk liquid into the biofilm
is provided in the trickling filter section.
Model Parameters
The mathematical equations used within each layer of the biofilm are provided in the
corresponding Model matrix (For example, see Appendix A for the mantis model). The
equation used for the diffusion of the state variables from the bulk liquid into the biofilm
is provided in the trickling filter section.
GPS-X Technical Reference