The look-up table WWTP_TYPE is not explicitly used used by the Pre-Processing modules. However, it helps to understand the coding in table FACILITIES.
| CODE | DESCRIPTION | COMMENTS |
|---|---|---|
| 1 | pond | |
| 2 | activated sludge | |
| 3 | extended aeration | |
| 4 | aerated ponds | |
| 5 | Imhoff tanks | |
| 6 | trickling filters | |
| - | others or n/a | |
| 0 | Not WWTP |