Research Article
Semiadaptive Fault Diagnosis via Variational Bayesian Mixture Factor Analysis with Application to Wastewater Treatment
Table 1
Selected sensors for process monitoring.
| Variables | Comments | Symbol |
| 1 | Total nitrogen concentration in effluent (mg N/L) | TN | 2 | Total chemical oxygen demand in the effluent (mg COD/L) | TCOD | 3 | NH4+ + NH3 nitrogen in effluent (mg N/L) | | 4 | Suspended solids concentration in effluent (mg SS/L) | SS | 5 | Biological oxygen demand concentration in effluent [g COD m−3] | BOD | 6 | Suspended solids concentration in influent (mg SS/L) | SS | 7 | NH4+ + NH3 nitrogen in influent (mg N/L) | | 8 | Oxygen in the third reactor g (−COD)⋅m−3; | | 9 | Nitrate and nitrite nitrogen in the third reactor (mg N/L) | | 10 | NH4+ + NH3 nitrogen in the third reactor (mg N/L) | | 11 | Oxygen in the fifth reactor g (COD)/m3; | | 12 | Nitrate and nitrite nitrogen in the fifth reactor (mg N/L) | | 13 | NH4+ + NH3 nitrogen in the fifth reactor (mg N/L) | | 14 | Flowrate in the third reactor m3/d | Flowrate | 15 | Oxygen transfer coefficient in the third reactor | KLa | 16 | Flowrate in the fifth reactor m3/d | Flowrate |
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