aerationcontrolinit_bsm1 ¶

Maximum possible external carbon flow rate to reactor 1 [m³ ⋅ d⁻¹].

Maximum possible external carbon flow rate to reactor 2 [m³ ⋅ d⁻¹].

Maximum possible external carbon flow rate to reactor 3 [m³ ⋅ d⁻¹].

Maximum possible external carbon flow rate to reactor 4 [m³ ⋅ d⁻¹].

Maximum possible external carbon flow rate to reactor 5 [m³ ⋅ d⁻¹].

Maximum pump capacity for internal recirculation rate Q_intr [m³ ⋅ d⁻¹].

Minimum pump capacity for internal recirculation rate Q_intr [m³ ⋅ d⁻¹].

Maximum pump capacity for waste sludge flow rate Q_w [m³ ⋅ d⁻¹].

Maximum pump capacity for return sludge flow rate Q_r [m³ ⋅ d⁻¹].

Maximum pump capacity for outlet flow rate of the storage tank Q_st,out [m³ ⋅ d⁻¹].

Time delay for artificial Q_w actuator (acts as first-order filter) [d].

Response time t_r for nitrate sensor [min].

Lower measuring limit of the nitrate sensor [g(N) ⋅ m⁻³].

Upper measuring limit of the nitrate sensor [g(N) ⋅ m⁻³].

Integral part time constant τ of transfer function for nitrate sensor [d].

Standard deviation for adding measurement noise for nitrate sensor [-].

Amplification constant for Q_intr controller [-].

Integral part time constant τ for Q_intr controller [d].

Integral part time constant τ of 'antiwindup' for Q_intr controller [d].

Differential part time constant τ for Q_intr controller [d].

Initial integration value for nitrate concentration of Q_intr controller [g(N) ⋅ m⁻³].

Initial integration value for 'antiwindup' nitrate concentration of Q_intr controller [g(N) ⋅ m⁻³].

Set point for nitrate concentration controller [g(N) ⋅ m⁻³].

Reasonable offset value for Q_intr controller around S_NO2^ref [m³ ⋅ d⁻¹].

Boolean value to use 'antiwindup' for QINTR controller.

Feedforward gain of QIN to QINTR [-].

Response time t_r for oxygen sensor 3 [min].

Lower measuring limit of the oxygen sensor 3 [g(O₂) ⋅ m⁻³].

"Upper measuring limit of the oxygen sensor 3 [g(O₂) ⋅ m⁻³].

Integral part time constant τ of transfer function for sensor 3 [d].

Standard deviation for adding measurement noise for sensor 3 [-].

Initial value for PI controller 3 [d⁻¹].

Lower limit of the adjustable KLa value for PI controller 3 [d⁻¹].

Upper limit of the adjustable KLa value for PI controller 3 [d⁻¹].

Amplification constant for PI controller 3 [-].

Integral part time constant τ for PI controller 3 [d].

Integral part time constant τ of 'antiwindup' for PI controller 3 [d].

Differential part time constant τ for PI controller 3 [d].

Initial integration value for saturated oxygen concentration of PI controller 3 [g(O₂) ⋅ m⁻³].

Initial integration value for 'antiwindup' saturated oxygen concentration of PI controller 3
[g(O₂) ⋅ m⁻³].

Set point for oxygen concentration controller 3 [g(O₂) ⋅ m⁻³].

Reasonable offset value for PI controller 3 around S_O^ref [d⁻¹].

KLa value after adjusting to upper and lower limit for PI controller 3 [d⁻¹].

KLa value calculated from PI control [d⁻¹].

Boolean value to use 'antiwindup' for PI controller 3.

Response time t_r for KLa actuator 3 [min].

Integral part time constant τ for KLa actuator 3 [d].

Response time t_r for oxygen sensor 4 [min].

Lower measuring limit of the oxygen sensor 4 [g(O₂) ⋅ m⁻³].

"Upper measuring limit of the oxygen sensor 4 [g(O₂) ⋅ m⁻³].

Integral part time constant τ of transfer function for sensor 4 [d].

Standard deviation for adding measurement noise for sensor 4 [-].

Initial value for PI controller 4 [d⁻¹].

Lower limit of the adjustable KLa value for PI controller 4 [d⁻¹].

Upper limit of the adjustable KLa value for PI controller 4 [d⁻¹].

Amplification constant for PI controller 4 [-].

Integral part time constant τ for PI controller 4 [d].

Integral part time constant τ of 'antiwindup' for PI controller 4 [d].

Differential part time constant τ for PI controller 4 [d].

Initial integration value for saturated oxygen concentration of PI controller 4 [g(O₂) ⋅ m⁻³].

Initial integration value for 'antiwindup' saturated oxygen concentration of PI controller 4
[g(O₂) ⋅ m⁻³].

Set point for oxygen concentration controller 4 [g(O₂) ⋅ m⁻³].

Reasonable offset value for PI controller 4 around S_O^ref [d⁻¹].

KLa value after adjusting to upper and lower limit for PI controller 4 [d⁻¹].

KLa value calculated from PI control [d⁻¹].

Boolean value to use 'antiwindup' for PI controller 4.

Response time t_r for KLa actuator 4 [min].

Integral part time constant τ for KLa actuator 4 [d].

Response time t_r for oxygen sensor 5 [min].

Lower measuring limit of the oxygen sensor 5 [g(O₂) ⋅ m⁻³].

"Upper measuring limit of the oxygen sensor 5 [g(O₂) ⋅ m⁻³].

Integral part time constant τ of transfer function for sensor 5 [d].

Standard deviation for adding measurement noise for sensor 5 [-].

Initial value for PI controller 5 [d⁻¹].

Lower limit of the adjustable KLa value for PI controller 5 [d⁻¹].

Upper limit of the adjustable KLa value for PI controller 5 [d⁻¹].

Amplification constant for PI controller 5 [-].

Integral part time constant τ for PI controller 5 [d].

Integral part time constant τ of 'antiwindup' for PI controller 5 [d].

Differential part time constant τ for PI controller 5 [d].

Initial integration value for saturated oxygen concentration of PI controller 5 [g(O₂) ⋅ m⁻³].

Initial integration value for 'antiwindup' saturated oxygen concentration of PI controller 5
[g(O₂) ⋅ m⁻³].

Set point for oxygen concentration controller 5 [g(O₂) ⋅ m⁻³].

Reasonable offset value for PI controller 5 around S_O^ref [d⁻¹].

KLa value after adjusting to upper and lower limit for PI controller 5 [d⁻¹].

KLa value calculated from PI control [d⁻¹].

Boolean value to use 'antiwindup' for PI controller 5.

Response time t_r for KLa actuator 5 [min].

Integral part time constant τ for KLa actuator 5 [d].