GPS-X Technical Reference

35 GPS-X State Variable Libraries
Carbon – Nitrogen – Phosphorus Library (CNPLIB)
Twenty-seven (27) state variables are available in the Carbon – Nitrogen – Phosphorus
library (Table 3-3)
Table 3-3 – Carbon – Nitrogen – Phosphorus (CNPLIB) Library State Variables
State Variables
GPS-X Cryptic
Symbols
Units
1. Soluble inert organics si gCOD/m 3
2. Readily biodegradable (soluble) substrate ss gCOD/m 3
3. Particulate inert organics xi gCOD/m 3
4. Slowly biodegr. (stored, particulate) substrate xs gCOD/m 3
5. Active heterotrophic biomass xbh gCOD/m 3
6. Active autotrophic biomass xba gCOD/m 3
7. Unbiodegradable particulates from cell decay xu gCOD/m 3
8. Dissolved oxygen so gO2/m 3
9. Nitrate and nitrite N sno gN/m 3
10. Free and ionized ammonia snh gN/m 3
11. Soluble biodegradable organic nitrogen (in ss) snd gN/m 3
12. Particulate biodegradable organic nitrogen (in xs) xnd gN/m 3
13. Polyphosphate accumulating biomass xbp gCOD/m 3
14. Poly-hydroxy-alkanoates (PHA) xbt gCOD/m 3
15. Stored polyphosphate xpp gP/m 3
16. Volatile fatty acids slf gCOD/m 3
17. Soluble phosphorus sp gP/m 3
18. Alkalinity salk mole/m 3
19. Dinitrogen snn gN/m 3
20. Soluble unbiodegradable organic nitrogen (in si) sni gN/m 3
21. Fermentable readily biodegradable substrate sf gCOD/m 3
22. Stored glycogen xgly gCOD/m 3
23. Stored polyphosphate (releasable) xppr gP/m 3
24. Metal-hydroxides xmeoh g/m 3
25. Metal-phosphate xmep g/m 3
26. Cell internal storage product xsto gCOD/m 3
27. Inert inorganic suspended solids xii g/m 3
CNP Industrial Pollutant Library (CNPIPLIB)
Fifty-seven (57) state variables are available in the CNP Industrial Pollutant Library
(CNPIPLIB). These include the 27 state variables from CNPLIB, as well as 30
user-definable variables (15 soluble and 15 particulate) as shown in Table 3-4
GPS-X Technical Reference