WasteWater.ASM2d

Information

This library contains components to build models of biological municipal
wastewater treatment plants based on the Activated Sludge Model No.2d (ASM2d) by the
International Association on Water Quality (IAWQ) [1].


The library currently is structured in following sub-libraries.

  Interfaces 

 - partial ASM2d models and connectors

  PreClar 

 - primary clarifier models

  SecClar 

 - several secondary settling tank models

  Examples 

 - wastewater treatment plant models

Main Author:
 
          Gerald Reichl
          Technische Universitaet Ilmenau
          Faculty of Informatics and Automation
          Department Dynamics and Simulation of ecological Systems
          P.O. Box 10 05 65
          98684 Ilmenau
          Germany
          email: gerald.reichl@tu-ilmenau.de


References:

[1] M. Henze and W.Gujer and T. Mino and. M.v. Loosdrecht: Activated Sludge
      Models ASM1, ASM2, ASM2d, and ASM3. IWA Task Group on Mathematical Modelling
      for Design and Operation of Biological Wastewater Treatment, 2000.


Copyright (C) 2002 - 2003, Gerald Reichl

The Modelica package is free software; it can be redistributed and/or modified under the terms of the Modelica license, see the license conditions and the accompanying disclaimer in the documentation of package Modelica in file "Modelica/package.mo".

WasteWater.ASM2d.deni

Information

This component models the ASM2d processes and reactions taking place in an unaerated (denitrification) tank
of a wastewater treatment plant.

The InPort signal gives the tank temperature to the model.

Parameters

All conversion factors and soichiometric and kinetic parameters of the activated sludge model No.2d (ASM2d).

Name	Default	Description
i_N_Si	0.01	N content of inert soluble COD Si [gN/gCOD]
i_N_Sf	0.03	N content of fermentable substrates Sf [gN/gCOD]
i_N_Xi	0.02	N content of inert particulate COD Xi [gN/gCOD]
i_N_Xs	0.04	N content of slowly biodegradable substrate Xs [gN/gCOD]
i_N_BM	0.07	N content of biomass, Xh, Xpao, Xa [gN/gCOD]
i_P_Si	0.0	P content of inert soluble COD Si [gP/gCOD]
i_P_Sf	0.01	P content of fermentable substrates Sf [gP/gCOD]
i_P_Xi	0.01	P content of inert particulate COD Xi [gP/gCOD]
i_P_Xs	0.01	P content of slowly biodegradable substrate Xs [gP/gCOD]
i_P_BM	0.02	P content of biomass, Xh, Xpao, Xa [gP/gCOD]
i_TSS_Xi	0.75	TSS to COD ratio for Xi [gTSS/gCOD]
i_TSS_Xs	0.75	TSS to COD ratio for Xs [gTSS/gCOD]
i_TSS_BM	0.9	TSS to COD ratio for biomass, Xh, Xpao, Xa [gTSS/gCOD]
f_Si	0.0	Production of Si in hydrolysis [gCOD/gCOD]
Y_H	0.625	Yield coefficient [gCOD/gCOD]
f_Xih	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
Y_PAO	0.625	Yield coefficient (biomass/PHA) [gCOD/gCOD]
Y_PO	0.4	PP requirement (PO4 release) per PHA stored [gP/gCOD]
Y_PHA	0.2	PHA requirement for PP storage [gCOD/gP]
f_Xip	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
Y_A	0.24	Yield of autotrophic biomass per NO3-N [gCOD/gN]
f_Xia	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
v_1_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_2_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_3_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_4_NH	i_N_Sf/Y_H - i_N_BM
v_5_NH	-i_N_BM
v_6_NH	i_N_Sf/Y_H - i_N_BM
v_7_NH	-i_N_BM
v_8_NH	i_N_Sf
v_9_NH	i_N_BM - f_Xih*i_N_Xi - (1 - f_Xih)*i_N_Xs
v_13_NH	-i_N_BM
v_14_NH	-i_N_BM
v_15_NH	i_N_BM - f_Xip*i_N_Xi - (1 - f_Xip)*i_N_Xs
v_18_NH	-1/Y_A - i_N_BM
v_19_NH	i_N_BM - f_Xia*i_N_Xi - (1 - f_Xia)*i_N_Xs
v_1_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_2_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_3_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_4_PO	i_P_Sf/Y_H - i_P_BM
v_5_PO	-i_P_BM
v_6_PO	i_P_Sf/Y_H - i_P_BM
v_7_PO	-i_P_BM
v_8_PO	i_P_Sf
v_9_PO	i_P_BM - f_Xih*i_P_Xi - (1 - f_Xih)*i_P_Xs
v_15_PO	i_P_BM - f_Xip*i_P_Xi - (1 - f_Xip)*i_P_Xs
v_19_PO	i_P_BM - f_Xia*i_P_Xi - (1 - f_Xia)*i_P_Xs
v_12_NO	-Y_PHA/2.86
v_14_NO	-(1 - Y_PAO)/(2.86*Y_PAO)
v_12_N2	-v_12_NO
v_14_N2	-v_14_NO
v_1_ALK	v_1_NH/14 + v_1_PO*(-1.5/31)
v_2_ALK	v_2_NH/14 + v_2_PO*(-1.5/31)
v_3_ALK	v_3_NH/14 + v_3_PO*(-1.5/31)
v_4_ALK	v_4_NH/14 + v_4_PO*(-1.5/31)
v_5_ALK	1/(Y_H*64) + v_5_NH/14 + v_5_PO*(-1.5/31)
v_6_ALK	v_6_NH/14 + (1 - Y_H)/(2.86*Y_H*14) + v_6_PO*(-1.5/31)
v_7_ALK	1/(Y_H*64) + v_7_NH/14 + (1 - Y_H)/(2.86*Y_H*14) + v_7_PO*(-1.5/31)
v_8_ALK	v_8_NH/14 + v_8_PO*(-1.5/31) - 1/64
v_9_ALK	v_9_NH/14 + v_9_PO*(-1.5/31)
v_10_ALK	1/64 + Y_PO*(-1.5/31) - Y_PO*(-1/31)
v_11_ALK	(1.5 - 1)/31
v_12_ALK	v_12_NO*(-1/14) + (1.5 - 1)/31
v_13_ALK	v_13_NH/14 - i_P_BM*(-1.5/31)
v_14_ALK	v_14_NH/14 - v_14_NO/14 - i_P_BM*(-1.5/31)
v_15_ALK	v_15_NH/14 + v_15_PO*(-1.5/31)
v_16_ALK	(1 - 1.5)/31
v_17_ALK	-1/64
v_18_ALK	v_18_NH/14 - 1/(Y_A*14) - i_P_BM*(-1.5/31)
v_19_ALK	v_19_NH/14 + v_19_PO*(-1.5/31)
v_20_ALK	1.5/31
v_21_ALK	-1.5/31
v_1_TSS	-i_TSS_Xs
v_2_TSS	-i_TSS_Xs
v_3_TSS	-i_TSS_Xs
v_4_TSS	i_TSS_BM
v_5_TSS	i_TSS_BM
v_6_TSS	i_TSS_BM
v_7_TSS	i_TSS_BM
v_9_TSS	f_Xih*i_TSS_Xi + (1 - f_Xih)*i_TSS_Xs - i_TSS_BM
v_10_TSS	-Y_PO*3.23 + 0.6
v_11_TSS	3.23 - Y_PHA*0.6
v_12_TSS	3.23 - Y_PHA*0.6
v_13_TSS	i_TSS_BM - 0.6/Y_PAO
v_14_TSS	i_TSS_BM - 0.6/Y_PAO
v_15_TSS	f_Xip*i_TSS_Xi + (1 - f_Xip)*i_TSS_Xs - i_TSS_BM
v_16_TSS	-3.23
v_17_TSS	-0.6
v_18_TSS	i_TSS_BM
v_19_TSS	f_Xia*i_TSS_Xi + (1 - f_Xia)*i_TSS_Xs - i_TSS_BM
v_13_O	-(1 - Y_PAO)/Y_PAO
K_h_T	3.0	Hydrolysis rate at T=20 deg C [d^-1]
eta_NO_Xs	0.6	Anoxic hydrolysis reduction factor [-]
eta_fe	0.4	Anaerobic hydrolysis reduction factor [-]
K_O_Xs	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_NO_Xs	0.5	Saturation/inhibition coefficient for nitrate [g N/m3]
K_X	0.1	Saturation coefficient for particulate COD [g Xs/(g Xh)]
mu_H_T	6.0	Maximum growth rate on substrate at T=20 deg C [g Xs/(g Xh)/d]
rho_fe_T	3.0	Maximum rate for fermentation at T=20 deg C [g Sf/(g Xh)/d]
eta_NO_Xh	0.8	Reduction factor for denitrification [-]
b_H_T	0.4	Rate for lysis and decay at T=20 deg C [d^-1]
K_O_Xh	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_F	4.0	Saturation coefficient for growth on Sf [g COD/m3]
K_fe	4.0	Saturation coefficient for fermentation of Sf [g COD/m3]
K_A_Xh	4.0	Saturation coefficient for growth on acetate Sa [g COD/m3]
K_NO_Xh	0.5	Saturation/inhibition coefficient for nitrate [g N/m3]
K_NH_Xh	0.05	Saturation coefficient for ammonium (nutrient) [g N/m3]
K_P_Xh	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
K_ALK_Xh	0.1	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
rho_PHA_T	3.0	Rate for storage of Xpha (base Xpp) at T=20 deg C [g Xpha/(g Xpao)/d]
rho_PP_T	1.5	Rate for storage of Xpp at T=20 deg C [g Xpp/(g Xpao)/d]
mu_PAO_T	1.0	Maximum growth rate of PAO at T=20 deg C [d^-1]
eta_NO_Xpao	0.6	Reduction factor for anoxic activity [-]
b_PAO_T	0.2	Rate for lysis of Xpao at T=20 deg C [d^-1]
b_PP_T	0.2	Rate for lysis of Xpp at T=20 dedg C [d^-1]
b_PHA_T	0.2	Rate for lysis of Xpha at T=20 deg C [d^-1]
K_O_Xpao	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_NO_Xpao	0.5	Saturation coefficient for nitrate, Sno3 [g N/m3]
K_A_Xpao	4.0	Saturation coefficient for acetate, Sa [g COD/m3]
K_NH_Xpao	0.05	Saturation coefficient for ammonium (nutrient) [g N/m3]
K_PS	0.2	Saturation coefficient for phosphorus in storage of PP [g P/m3]
K_P_Xpao	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
K_ALK_Xpao	0.1	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
K_PP	0.01	Saturation coefficient for poly-phosphate [g Xpp/(g Xpao)]
K_MAX	0.34	Maximum ratio of Xpp/Xpao [g Xpp/(g Xpao)]
K_IPP	0.02	Inhibition coefficient for PP storage [g Xpp/(g Xpao)]
K_PHA	0.01	Saturation coefficient for PHA [g Xpha/(g Xpao)]
mu_AUT_T	1.0	Maximum growth rate of Xa at T=20 deg C [d^-1]
b_AUT_T	0.15	Decay rate of Xa at T=20 deg C [d^-1]
K_O_Xa	0.5	Saturation coefficient for oxygen [g O2/m3]
K_NH_Xa	1.0	Saturation coefficient for ammonium (substrate) [g N/m3]
K_ALK_Xa	0.5	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
K_P_Xa	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
k_PRE	1.0	Rate constant for P precipitation [m3/(g Fe(OH3))/d]
k_RED	0.6	Rate constant for redissolution [d^-1]
K_ALK_Pre	0.5	Saturation coefficient for alkalinity [mole HCO3/m3]
V	1000	Volume of denitrification tank [m3]

Modelica definition

model deni "ASM2d denitrification tank" 
  //denitrifikation tank based on the ASM2d model

  extends WasteWater.Icons.deni;
  extends Interfaces.ASM2dbase;
  
  // tank specific parameters
  parameter Modelica.SIunits.Volume V=1000 "Volume of denitrification tank";
  
  // following 4 connectors are already in ASM2dbase and are inherited,
  // but listed hear again to avoid an icon related problem
  // with the sequence of extends-clauses
    Interfaces.WWFlowAsm2din In;
  Interfaces.WWFlowAsm2dout Out;
  Interfaces.WWFlowAsm2dout MeasurePort;
  Modelica.Blocks.Interfaces.InPort T(final n=1);
equation 
  
  aeration = 0;
  // no aeration in this tank //
  
  // volume dependent dilution term of each concentration
  
  inputSo = (In.So - So)*In.Q/V;
  inputSf = (In.Sf - Sf)*In.Q/V;
  inputSa = (In.Sa - Sa)*In.Q/V;
  inputSnh = (In.Snh - Snh)*In.Q/V;
  inputSno = (In.Sno - Sno)*In.Q/V;
  inputSpo = (In.Spo - Spo)*In.Q/V;
  inputSi = (In.Si - Si)*In.Q/V;
  inputSalk = (In.Salk - Salk)*In.Q/V;
  inputSn2 = (In.Sn2 - Sn2)*In.Q/V;
  inputXi = (In.Xi - Xi)*In.Q/V;
  inputXs = (In.Xs - Xs)*In.Q/V;
  inputXh = (In.Xh - Xh)*In.Q/V;
  inputXpao = (In.Xpao - Xpao)*In.Q/V;
  inputXpp = (In.Xpp - Xpp)*In.Q/V;
  inputXpha = (In.Xpha - Xpha)*In.Q/V;
  inputXa = (In.Xa - Xa)*In.Q/V;
  inputXtss = (In.Xtss - Xtss)*In.Q/V;
  inputXmeoh = (In.Xmeoh - Xmeoh)*In.Q/V;
  inputXmep = (In.Xmep - Xmep)*In.Q/V;
  
end deni;

WasteWater.ASM2d.nitri

Information

This component models the ASM2d processes and reactions taking place in an 
aerated (nitrification) tank of a wastewater treatment plant.

The InPort signal gives the tank temperature to the model.

Parameters

All conversion factors and soichiometric and kinetic parameters of the activated sludge model No.2d (ASM2d)

Name	Default	Description
i_N_Si	0.01	N content of inert soluble COD Si [gN/gCOD]
i_N_Sf	0.03	N content of fermentable substrates Sf [gN/gCOD]
i_N_Xi	0.02	N content of inert particulate COD Xi [gN/gCOD]
i_N_Xs	0.04	N content of slowly biodegradable substrate Xs [gN/gCOD]
i_N_BM	0.07	N content of biomass, Xh, Xpao, Xa [gN/gCOD]
i_P_Si	0.0	P content of inert soluble COD Si [gP/gCOD]
i_P_Sf	0.01	P content of fermentable substrates Sf [gP/gCOD]
i_P_Xi	0.01	P content of inert particulate COD Xi [gP/gCOD]
i_P_Xs	0.01	P content of slowly biodegradable substrate Xs [gP/gCOD]
i_P_BM	0.02	P content of biomass, Xh, Xpao, Xa [gP/gCOD]
i_TSS_Xi	0.75	TSS to COD ratio for Xi [gTSS/gCOD]
i_TSS_Xs	0.75	TSS to COD ratio for Xs [gTSS/gCOD]
i_TSS_BM	0.9	TSS to COD ratio for biomass, Xh, Xpao, Xa [gTSS/gCOD]
f_Si	0.0	Production of Si in hydrolysis [gCOD/gCOD]
Y_H	0.625	Yield coefficient [gCOD/gCOD]
f_Xih	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
Y_PAO	0.625	Yield coefficient (biomass/PHA) [gCOD/gCOD]
Y_PO	0.4	PP requirement (PO4 release) per PHA stored [gP/gCOD]
Y_PHA	0.2	PHA requirement for PP storage [gCOD/gP]
f_Xip	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
Y_A	0.24	Yield of autotrophic biomass per NO3-N [gCOD/gN]
f_Xia	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
v_1_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_2_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_3_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_4_NH	i_N_Sf/Y_H - i_N_BM
v_5_NH	-i_N_BM
v_6_NH	i_N_Sf/Y_H - i_N_BM
v_7_NH	-i_N_BM
v_8_NH	i_N_Sf
v_9_NH	i_N_BM - f_Xih*i_N_Xi - (1 - f_Xih)*i_N_Xs
v_13_NH	-i_N_BM
v_14_NH	-i_N_BM
v_15_NH	i_N_BM - f_Xip*i_N_Xi - (1 - f_Xip)*i_N_Xs
v_18_NH	-1/Y_A - i_N_BM
v_19_NH	i_N_BM - f_Xia*i_N_Xi - (1 - f_Xia)*i_N_Xs
v_1_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_2_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_3_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_4_PO	i_P_Sf/Y_H - i_P_BM
v_5_PO	-i_P_BM
v_6_PO	i_P_Sf/Y_H - i_P_BM
v_7_PO	-i_P_BM
v_8_PO	i_P_Sf
v_9_PO	i_P_BM - f_Xih*i_P_Xi - (1 - f_Xih)*i_P_Xs
v_15_PO	i_P_BM - f_Xip*i_P_Xi - (1 - f_Xip)*i_P_Xs
v_19_PO	i_P_BM - f_Xia*i_P_Xi - (1 - f_Xia)*i_P_Xs
v_12_NO	-Y_PHA/2.86
v_14_NO	-(1 - Y_PAO)/(2.86*Y_PAO)
v_12_N2	-v_12_NO
v_14_N2	-v_14_NO
v_1_ALK	v_1_NH/14 + v_1_PO*(-1.5/31)
v_2_ALK	v_2_NH/14 + v_2_PO*(-1.5/31)
v_3_ALK	v_3_NH/14 + v_3_PO*(-1.5/31)
v_4_ALK	v_4_NH/14 + v_4_PO*(-1.5/31)
v_5_ALK	1/(Y_H*64) + v_5_NH/14 + v_5_PO*(-1.5/31)
v_6_ALK	v_6_NH/14 + (1 - Y_H)/(2.86*Y_H*14) + v_6_PO*(-1.5/31)
v_7_ALK	1/(Y_H*64) + v_7_NH/14 + (1 - Y_H)/(2.86*Y_H*14) + v_7_PO*(-1.5/31)
v_8_ALK	v_8_NH/14 + v_8_PO*(-1.5/31) - 1/64
v_9_ALK	v_9_NH/14 + v_9_PO*(-1.5/31)
v_10_ALK	1/64 + Y_PO*(-1.5/31) - Y_PO*(-1/31)
v_11_ALK	(1.5 - 1)/31
v_12_ALK	v_12_NO*(-1/14) + (1.5 - 1)/31
v_13_ALK	v_13_NH/14 - i_P_BM*(-1.5/31)
v_14_ALK	v_14_NH/14 - v_14_NO/14 - i_P_BM*(-1.5/31)
v_15_ALK	v_15_NH/14 + v_15_PO*(-1.5/31)
v_16_ALK	(1 - 1.5)/31
v_17_ALK	-1/64
v_18_ALK	v_18_NH/14 - 1/(Y_A*14) - i_P_BM*(-1.5/31)
v_19_ALK	v_19_NH/14 + v_19_PO*(-1.5/31)
v_20_ALK	1.5/31
v_21_ALK	-1.5/31
v_1_TSS	-i_TSS_Xs
v_2_TSS	-i_TSS_Xs
v_3_TSS	-i_TSS_Xs
v_4_TSS	i_TSS_BM
v_5_TSS	i_TSS_BM
v_6_TSS	i_TSS_BM
v_7_TSS	i_TSS_BM
v_9_TSS	f_Xih*i_TSS_Xi + (1 - f_Xih)*i_TSS_Xs - i_TSS_BM
v_10_TSS	-Y_PO*3.23 + 0.6
v_11_TSS	3.23 - Y_PHA*0.6
v_12_TSS	3.23 - Y_PHA*0.6
v_13_TSS	i_TSS_BM - 0.6/Y_PAO
v_14_TSS	i_TSS_BM - 0.6/Y_PAO
v_15_TSS	f_Xip*i_TSS_Xi + (1 - f_Xip)*i_TSS_Xs - i_TSS_BM
v_16_TSS	-3.23
v_17_TSS	-0.6
v_18_TSS	i_TSS_BM
v_19_TSS	f_Xia*i_TSS_Xi + (1 - f_Xia)*i_TSS_Xs - i_TSS_BM
v_13_O	-(1 - Y_PAO)/Y_PAO
K_h_T	3.0	Hydrolysis rate at T=20 deg C [d^-1]
eta_NO_Xs	0.6	Anoxic hydrolysis reduction factor [-]
eta_fe	0.4	Anaerobic hydrolysis reduction factor [-]
K_O_Xs	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_NO_Xs	0.5	Saturation/inhibition coefficient for nitrate [g N/m3]
K_X	0.1	Saturation coefficient for particulate COD [g Xs/(g Xh)]
mu_H_T	6.0	Maximum growth rate on substrate at T=20 deg C [g Xs/(g Xh)/d]
rho_fe_T	3.0	Maximum rate for fermentation at T=20 deg C [g Sf/(g Xh)/d]
eta_NO_Xh	0.8	Reduction factor for denitrification [-]
b_H_T	0.4	Rate for lysis and decay at T=20 deg C [d^-1]
K_O_Xh	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_F	4.0	Saturation coefficient for growth on Sf [g COD/m3]
K_fe	4.0	Saturation coefficient for fermentation of Sf [g COD/m3]
K_A_Xh	4.0	Saturation coefficient for growth on acetate Sa [g COD/m3]
K_NO_Xh	0.5	Saturation/inhibition coefficient for nitrate [g N/m3]
K_NH_Xh	0.05	Saturation coefficient for ammonium (nutrient) [g N/m3]
K_P_Xh	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
K_ALK_Xh	0.1	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
rho_PHA_T	3.0	Rate for storage of Xpha (base Xpp) at T=20 deg C [g Xpha/(g Xpao)/d]
rho_PP_T	1.5	Rate for storage of Xpp at T=20 deg C [g Xpp/(g Xpao)/d]
mu_PAO_T	1.0	Maximum growth rate of PAO at T=20 deg C [d^-1]
eta_NO_Xpao	0.6	Reduction factor for anoxic activity [-]
b_PAO_T	0.2	Rate for lysis of Xpao at T=20 deg C [d^-1]
b_PP_T	0.2	Rate for lysis of Xpp at T=20 dedg C [d^-1]
b_PHA_T	0.2	Rate for lysis of Xpha at T=20 deg C [d^-1]
K_O_Xpao	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_NO_Xpao	0.5	Saturation coefficient for nitrate, Sno3 [g N/m3]
K_A_Xpao	4.0	Saturation coefficient for acetate, Sa [g COD/m3]
K_NH_Xpao	0.05	Saturation coefficient for ammonium (nutrient) [g N/m3]
K_PS	0.2	Saturation coefficient for phosphorus in storage of PP [g P/m3]
K_P_Xpao	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
K_ALK_Xpao	0.1	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
K_PP	0.01	Saturation coefficient for poly-phosphate [g Xpp/(g Xpao)]
K_MAX	0.34	Maximum ratio of Xpp/Xpao [g Xpp/(g Xpao)]
K_IPP	0.02	Inhibition coefficient for PP storage [g Xpp/(g Xpao)]
K_PHA	0.01	Saturation coefficient for PHA [g Xpha/(g Xpao)]
mu_AUT_T	1.0	Maximum growth rate of Xa at T=20 deg C [d^-1]
b_AUT_T	0.15	Decay rate of Xa at T=20 deg C [d^-1]
K_O_Xa	0.5	Saturation coefficient for oxygen [g O2/m3]
K_NH_Xa	1.0	Saturation coefficient for ammonium (substrate) [g N/m3]
K_ALK_Xa	0.5	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
K_P_Xa	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
k_PRE	1.0	Rate constant for P precipitation [m3/(g Fe(OH3))/d]
k_RED	0.6	Rate constant for redissolution [d^-1]
K_ALK_Pre	0.5	Saturation coefficient for alkalinity [mole HCO3/m3]
V	1000	Volume of nitrification tank [m3]
alpha	0.7	Oxygen transfer factor
de	4.5	depth of aeration [m]
R_air	23.5	specific oxygen feed factor [gO2/(m^3*m)]

Modelica definition

model nitri "ASM2d nitrification tank" 
  // nitrification (aerated) tank, based on the ASM2d model
  
  extends WasteWater.Icons.nitri;
  extends Interfaces.ASM2dbase;
  
  // aeration system dependend parameters
  parameter Modelica.SIunits.Volume V=1000 "Volume of nitrification tank";
  parameter Real alpha=0.7 "Oxygen transfer factor";
  parameter Modelica.SIunits.Length de=4.5 "depth of aeration";
  parameter Real R_air=23.5 "specific oxygen feed factor [gO2/(m^3*m)]";
  WWU.MassConcentration So_sat "Dissolved oxygen saturation";
  
  // following 4 connectors are already in ASM2dbase and are inherited,
  // but listed hear again to avoid an icon related problem
  // with the sequence of extends-clauses
    Interfaces.WWFlowAsm2din In;
  Interfaces.WWFlowAsm2dout Out;
  Interfaces.WWFlowAsm2dout MeasurePort;
  Modelica.Blocks.Interfaces.InPort T(final n=1);

  Interfaces.AirFlow AirIn;
equation 
  
  // Temperature dependend oxygen saturation by Simba
  So_sat = 13.89 + (-0.3825 + (0.007311 - 0.00006588*T.signal[1])*T.signal[1])*
    T.signal[1];
  
  // extends the Oxygen differential equation by an aeration term
  // aeration [mgO2/l]; AirIn.Q_air needs to be in 
  // Simulationtimeunit [m3/day^-1]
  aeration = (alpha*(So_sat - So)/So_sat*AirIn.Q_air*R_air*de)/V;
  // aeration = Kla * (So_sat -So);
  
  // volume dependent dilution term of each concentration  
  inputSo = (In.So - So)*In.Q/V;
  inputSf = (In.Sf - Sf)*In.Q/V;
  inputSa = (In.Sa - Sa)*In.Q/V;
  inputSnh = (In.Snh - Snh)*In.Q/V;
  inputSno = (In.Sno - Sno)*In.Q/V;
  inputSpo = (In.Spo - Spo)*In.Q/V;
  inputSi = (In.Si - Si)*In.Q/V;
  inputSalk = (In.Salk - Salk)*In.Q/V;
  inputSn2 = (In.Sn2 - Sn2)*In.Q/V;
  inputXi = (In.Xi - Xi)*In.Q/V;
  inputXs = (In.Xs - Xs)*In.Q/V;
  inputXh = (In.Xh - Xh)*In.Q/V;
  inputXpao = (In.Xpao - Xpao)*In.Q/V;
  inputXpp = (In.Xpp - Xpp)*In.Q/V;
  inputXpha = (In.Xpha - Xpha)*In.Q/V;
  inputXa = (In.Xa - Xa)*In.Q/V;
  inputXtss = (In.Xtss - Xtss)*In.Q/V;
  inputXmeoh = (In.Xmeoh - Xmeoh)*In.Q/V;
  inputXmep = (In.Xmep - Xmep)*In.Q/V;
  
end nitri;

WasteWater.ASM2d.precipitation

Information

This ASM2d component is used to model the chemical Phosphorus precipitation
with FeCl3 as precipitant.

Parameters

All ASM2d conversion factors and stoichiometric and kinetic parameters.

Name	Default	Description
i_N_Si	0.01	N content of inert soluble COD Si [gN/gCOD]
i_N_Sf	0.03	N content of fermentable substrates Sf [gN/gCOD]
i_N_Xi	0.02	N content of inert particulate COD Xi [gN/gCOD]
i_N_Xs	0.04	N content of slowly biodegradable substrate Xs [gN/gCOD]
i_N_BM	0.07	N content of biomass, Xh, Xpao, Xa [gN/gCOD]
i_P_Si	0.0	P content of inert soluble COD Si [gP/gCOD]
i_P_Sf	0.01	P content of fermentable substrates Sf [gP/gCOD]
i_P_Xi	0.01	P content of inert particulate COD Xi [gP/gCOD]
i_P_Xs	0.01	P content of slowly biodegradable substrate Xs [gP/gCOD]
i_P_BM	0.02	P content of biomass, Xh, Xpao, Xa [gP/gCOD]
i_TSS_Xi	0.75	TSS to COD ratio for Xi [gTSS/gCOD]
i_TSS_Xs	0.75	TSS to COD ratio for Xs [gTSS/gCOD]
i_TSS_BM	0.9	TSS to COD ratio for biomass, Xh, Xpao, Xa [gTSS/gCOD]
f_Si	0.0	Production of Si in hydrolysis [gCOD/gCOD]
Y_H	0.625	Yield coefficient [gCOD/gCOD]
f_Xih	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
Y_PAO	0.625	Yield coefficient (biomass/PHA) [gCOD/gCOD]
Y_PO	0.4	PP requirement (PO4 release) per PHA stored [gP/gCOD]
Y_PHA	0.2	PHA requirement for PP storage [gCOD/gP]
f_Xip	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
Y_A	0.24	Yield of autotrophic biomass per NO3-N [gCOD/gN]
f_Xia	0.1	Fraction of inert COD generated in biomass lysis [gCOD/gCOD]
v_1_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_2_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_3_NH	i_N_Xs - (1 - f_Si)*i_N_Sf - f_Si*i_N_Si
v_4_NH	i_N_Sf/Y_H - i_N_BM
v_5_NH	-i_N_BM
v_6_NH	i_N_Sf/Y_H - i_N_BM
v_7_NH	-i_N_BM
v_8_NH	i_N_Sf
v_9_NH	i_N_BM - f_Xih*i_N_Xi - (1 - f_Xih)*i_N_Xs
v_13_NH	-i_N_BM
v_14_NH	-i_N_BM
v_15_NH	i_N_BM - f_Xip*i_N_Xi - (1 - f_Xip)*i_N_Xs
v_18_NH	-1/Y_A - i_N_BM
v_19_NH	i_N_BM - f_Xia*i_N_Xi - (1 - f_Xia)*i_N_Xs
v_1_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_2_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_3_PO	i_P_Xs - (1 - f_Si)*i_P_Sf - f_Si*i_P_Si
v_4_PO	i_P_Sf/Y_H - i_P_BM
v_5_PO	-i_P_BM
v_6_PO	i_P_Sf/Y_H - i_P_BM
v_7_PO	-i_P_BM
v_8_PO	i_P_Sf
v_9_PO	i_P_BM - f_Xih*i_P_Xi - (1 - f_Xih)*i_P_Xs
v_15_PO	i_P_BM - f_Xip*i_P_Xi - (1 - f_Xip)*i_P_Xs
v_19_PO	i_P_BM - f_Xia*i_P_Xi - (1 - f_Xia)*i_P_Xs
v_12_NO	-Y_PHA/2.86
v_14_NO	-(1 - Y_PAO)/(2.86*Y_PAO)
v_12_N2	-v_12_NO
v_14_N2	-v_14_NO
v_1_ALK	v_1_NH/14 + v_1_PO*(-1.5/31)
v_2_ALK	v_2_NH/14 + v_2_PO*(-1.5/31)
v_3_ALK	v_3_NH/14 + v_3_PO*(-1.5/31)
v_4_ALK	v_4_NH/14 + v_4_PO*(-1.5/31)
v_5_ALK	1/(Y_H*64) + v_5_NH/14 + v_5_PO*(-1.5/31)
v_6_ALK	v_6_NH/14 + (1 - Y_H)/(2.86*Y_H*14) + v_6_PO*(-1.5/31)
v_7_ALK	1/(Y_H*64) + v_7_NH/14 + (1 - Y_H)/(2.86*Y_H*14) + v_7_PO*(-1.5/31)
v_8_ALK	v_8_NH/14 + v_8_PO*(-1.5/31) - 1/64
v_9_ALK	v_9_NH/14 + v_9_PO*(-1.5/31)
v_10_ALK	1/64 + Y_PO*(-1.5/31) - Y_PO*(-1/31)
v_11_ALK	(1.5 - 1)/31
v_12_ALK	v_12_NO*(-1/14) + (1.5 - 1)/31
v_13_ALK	v_13_NH/14 - i_P_BM*(-1.5/31)
v_14_ALK	v_14_NH/14 - v_14_NO/14 - i_P_BM*(-1.5/31)
v_15_ALK	v_15_NH/14 + v_15_PO*(-1.5/31)
v_16_ALK	(1 - 1.5)/31
v_17_ALK	-1/64
v_18_ALK	v_18_NH/14 - 1/(Y_A*14) - i_P_BM*(-1.5/31)
v_19_ALK	v_19_NH/14 + v_19_PO*(-1.5/31)
v_20_ALK	1.5/31
v_21_ALK	-1.5/31
v_1_TSS	-i_TSS_Xs
v_2_TSS	-i_TSS_Xs
v_3_TSS	-i_TSS_Xs
v_4_TSS	i_TSS_BM
v_5_TSS	i_TSS_BM
v_6_TSS	i_TSS_BM
v_7_TSS	i_TSS_BM
v_9_TSS	f_Xih*i_TSS_Xi + (1 - f_Xih)*i_TSS_Xs - i_TSS_BM
v_10_TSS	-Y_PO*3.23 + 0.6
v_11_TSS	3.23 - Y_PHA*0.6
v_12_TSS	3.23 - Y_PHA*0.6
v_13_TSS	i_TSS_BM - 0.6/Y_PAO
v_14_TSS	i_TSS_BM - 0.6/Y_PAO
v_15_TSS	f_Xip*i_TSS_Xi + (1 - f_Xip)*i_TSS_Xs - i_TSS_BM
v_16_TSS	-3.23
v_17_TSS	-0.6
v_18_TSS	i_TSS_BM
v_19_TSS	f_Xia*i_TSS_Xi + (1 - f_Xia)*i_TSS_Xs - i_TSS_BM
v_13_O	-(1 - Y_PAO)/Y_PAO
K_h_T	3.0	Hydrolysis rate at T=20 deg C [d^-1]
eta_NO_Xs	0.6	Anoxic hydrolysis reduction factor [-]
eta_fe	0.4	Anaerobic hydrolysis reduction factor [-]
K_O_Xs	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_NO_Xs	0.5	Saturation/inhibition coefficient for nitrate [g N/m3]
K_X	0.1	Saturation coefficient for particulate COD [g Xs/(g Xh)]
mu_H_T	6.0	Maximum growth rate on substrate at T=20 deg C [g Xs/(g Xh)/d]
rho_fe_T	3.0	Maximum rate for fermentation at T=20 deg C [g Sf/(g Xh)/d]
eta_NO_Xh	0.8	Reduction factor for denitrification [-]
b_H_T	0.4	Rate for lysis and decay at T=20 deg C [d^-1]
K_O_Xh	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_F	4.0	Saturation coefficient for growth on Sf [g COD/m3]
K_fe	4.0	Saturation coefficient for fermentation of Sf [g COD/m3]
K_A_Xh	4.0	Saturation coefficient for growth on acetate Sa [g COD/m3]
K_NO_Xh	0.5	Saturation/inhibition coefficient for nitrate [g N/m3]
K_NH_Xh	0.05	Saturation coefficient for ammonium (nutrient) [g N/m3]
K_P_Xh	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
K_ALK_Xh	0.1	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
rho_PHA_T	3.0	Rate for storage of Xpha (base Xpp) at T=20 deg C [g Xpha/(g Xpao)/d]
rho_PP_T	1.5	Rate for storage of Xpp at T=20 deg C [g Xpp/(g Xpao)/d]
mu_PAO_T	1.0	Maximum growth rate of PAO at T=20 deg C [d^-1]
eta_NO_Xpao	0.6	Reduction factor for anoxic activity [-]
b_PAO_T	0.2	Rate for lysis of Xpao at T=20 deg C [d^-1]
b_PP_T	0.2	Rate for lysis of Xpp at T=20 dedg C [d^-1]
b_PHA_T	0.2	Rate for lysis of Xpha at T=20 deg C [d^-1]
K_O_Xpao	0.2	Saturation/inhibition coefficient for oxygen [g O2/m3]
K_NO_Xpao	0.5	Saturation coefficient for nitrate, Sno3 [g N/m3]
K_A_Xpao	4.0	Saturation coefficient for acetate, Sa [g COD/m3]
K_NH_Xpao	0.05	Saturation coefficient for ammonium (nutrient) [g N/m3]
K_PS	0.2	Saturation coefficient for phosphorus in storage of PP [g P/m3]
K_P_Xpao	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
K_ALK_Xpao	0.1	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
K_PP	0.01	Saturation coefficient for poly-phosphate [g Xpp/(g Xpao)]
K_MAX	0.34	Maximum ratio of Xpp/Xpao [g Xpp/(g Xpao)]
K_IPP	0.02	Inhibition coefficient for PP storage [g Xpp/(g Xpao)]
K_PHA	0.01	Saturation coefficient for PHA [g Xpha/(g Xpao)]
mu_AUT_T	1.0	Maximum growth rate of Xa at T=20 deg C [d^-1]
b_AUT_T	0.15	Decay rate of Xa at T=20 deg C [d^-1]
K_O_Xa	0.5	Saturation coefficient for oxygen [g O2/m3]
K_NH_Xa	1.0	Saturation coefficient for ammonium (substrate) [g N/m3]
K_ALK_Xa	0.5	Saturation coefficient for alkalinity (HCO3) [mole HCO3/m3]
K_P_Xa	0.01	Saturation coefficient for phosphate (nutrient) [g P/m3]
k_PRE	1.0	Rate constant for P precipitation [m3/(g Fe(OH3))/d]
k_RED	0.6	Rate constant for redissolution [d^-1]
K_ALK_Pre	0.5	Saturation coefficient for alkalinity [mole HCO3/m3]
V	50	Volume of precipitation tank [m3]
Wsub	2.5	effective substance in precipitant [mol/kg]
D	1.4	density of precipitant [kg/l]
beta	5.0	precipitant surplus
Qmin	5.0	Minimum flow of precipitant [l/h]
MP	30.97	Molar Mass of Phosphorus [g/mol]
Mpre	55.85	Molar Mass of precipitant [g/mol]

Modelica definition

model precipitation "Phosphorus precipitation tank" 
  
  extends WasteWater.Icons.precipitation;
  extends Interfaces.ASM2dbase;
  
  parameter Modelica.SIunits.Volume V=50 "Volume of precipitation tank";
  parameter Real Wsub=2.5 "effective substance in precipitant [mol/kg]";
  parameter Real D=1.4 "density of precipitant [kg/l]";
  parameter Real beta=5.0 "precipitant surplus";
  parameter Real Qmin=5.0 "Minimum flow of precipitant [l/h]";
  parameter Real MP=30.97 "Molar Mass of Phosphorus [g/mol]";
  parameter Real Mpre=55.85 "Molar Mass of precipitant [g/mol]";
  WWU.VolumeFlowRate Qpreci "Dosage flow of precipitant used";
  Real Preci "Concentration of effective substance in precipitant flow
  [g/m³]";
  Real H;

  // following 4 connectors are already in ASM2dbase and are inherited,
  // but listed hear again to avoid an icon related problem
  // with the sequence of extends-clauses
    Interfaces.WWFlowAsm2din In;
  Interfaces.WWFlowAsm2dout Out;
  Interfaces.WWFlowAsm2dout MeasurePort;
  Modelica.Blocks.Interfaces.InPort T(final n=1);
equation 
  
  aeration = 0;
  //no aerotation in this tank
  
  H = (1/Wsub)*(1/(D*1000))*(1/Mpre)*Mpre/MP*beta*In.Spo*In.Q;
  Qpreci = if H < (Qmin*24/1000) then Qmin*24/1000 else H;
  // the factor 1.91 is a stoichiometric coefficient between Fe3+ and Xmeoh
  Preci = 1.91*Wsub*D*Mpre*1000;
  
  // volume dependent dilution term of each concentration  
  inputSo = (In.So - So)*In.Q/V;
  inputSf = (In.Sf - Sf)*In.Q/V;
  inputSa = (In.Sa - Sa)*In.Q/V;
  inputSnh = (In.Snh - Snh)*In.Q/V;
  inputSno = (In.Sno - Sno)*In.Q/V;
  inputSpo = (In.Spo - Spo)*In.Q/V;
  inputSi = (In.Si - Si)*In.Q/V;
  inputSalk = (In.Salk - Salk)*In.Q/V;
  inputSn2 = (In.Sn2 - Sn2)*In.Q/V;
  inputXi = (In.Xi - Xi)*In.Q/V;
  inputXs = (In.Xs - Xs)*In.Q/V;
  inputXh = (In.Xh - Xh)*In.Q/V;
  inputXpao = (In.Xpao - Xpao)*In.Q/V;
  inputXpp = (In.Xpp - Xpp)*In.Q/V;
  inputXpha = (In.Xpha - Xpha)*In.Q/V;
  inputXa = (In.Xa - Xa)*In.Q/V;
  inputXtss = (In.Xtss - Xtss)*In.Q/V;
  inputXmeoh = (In.Xmeoh - Xmeoh)*In.Q/V + Qpreci*Preci/V;
  inputXmep = (In.Xmep - Xmep)*In.Q/V;
  
end precipitation;

WasteWater.ASM2d.SecClarModTakacs

Information

This component models an ASM2d 10 - layer secondary clarifier model with 4 layers 
above the  feed_layer (including top_layer) and 5 layers below the feed_layer 
(including bottom_layer) based on Takacs` theory.

Parameters

Name	Default	Description
hsc	4.0	height of secondary clarifier [m]
n	10	number of layers of SC model
zm	hsc/(1.0*n)	height of m-th secondary clarifier layer [m]
Asc	1500.0	area of secondary clarifier [m2]
Xt	3000.0	threshold for X [mg/l]

Modelica definition

model SecClarModTakacs 
  "ASM2d Secondary Clarifier Model based on Takacs" 
  
  extends WasteWater.Icons.SecClar;
  extends ASM2d.SecClar.Takacs.Interfaces.ratios;
  package SCP = ASM2d.SecClar.Takacs;
  package SI = Modelica.SIunits;
  package WI = ASM2d.Interfaces;
  package WWU = WasteWater.WasteWaterUnits;
  
  parameter SI.Length hsc=4.0 "height of secondary clarifier";
  parameter Integer n=10 "number of layers of SC model";
  parameter SI.Length zm=hsc/(1.0*n) "height of m-th secondary clarifier layer";
  parameter SI.Area Asc=1500.0 "area of secondary clarifier";
  parameter WWU.MassConcentration Xt=3000.0 "threshold for X";
  
  // total sludge concentration in clarifier feed
  WWU.MassConcentration Xf;
  WI.WWFlowAsm2din Feed;
  WI.WWFlowAsm2dout Effluent;
  WI.WWFlowAsm2dout Return;
  WI.WWFlowAsm2dout Waste;
  
  // layers 1 to 10
  SCP.bottom_layer S1(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf, 
    rXi=rXi, 
    rXs=rXs, 
    rXh=rXh, 
    rXpao=rXpao, 
    rXpp=rXpp, 
    rXpha=rXpha, 
    rXa=rXa, 
    rXmeoh=rXmeoh, 
    rXmep=rXmep);
  SCP.lower_layer S2(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf);
  SCP.lower_layer S3(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf);
  SCP.lower_layer S4(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf);
  SCP.lower_layer S5(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf);
  SCP.feed_layer S6(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf);
  SCP.upper_layer S7(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf, 
    Xt=Xt);
  SCP.upper_layer S8(
    zm=zm, 
    Asc=Asc, 
    Xt=Xt, 
    Xf=Xf);
  SCP.upper_layer S9(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf, 
    Xt=Xt);
  SCP.top_layer S10(
    zm=zm, 
    Asc=Asc, 
    Xf=Xf, 
    Xt=Xt, 
    rXi=rXi, 
    rXs=rXs, 
    rXh=rXh, 
    rXpao=rXpao, 
    rXpp=rXpp, 
    rXpha=rXpha, 
    rXa=rXa, 
    rXmeoh=rXmeoh, 
    rXmep=rXmep);
equation 
  
  connect(S1.Up, S2.Dn);
  connect(S2.Up, S3.Dn);
  connect(S3.Up, S4.Dn);
  connect(S5.Up, S6.Dn);
  connect(S6.Up, S7.Dn);
  connect(S7.Up, S8.Dn);
  connect(S9.Up, S10.Dn);
  connect(S4.Up, S5.Dn);
  connect(S8.Up, S9.Dn);
  connect(Feed, S6.In);
  connect(S1.PQw, Waste);
  connect(S10.Out, Effluent);
  connect(S1.PQr, Return);
  
  // total sludge concentration in clarifier feed
  Xf = Feed.Xtss;
  
  // ratios of solid components
  rXi = Feed.Xi/Xf;
  rXs = Feed.Xs/Xf;
  rXh = Feed.Xh/Xf;
  rXpao = Feed.Xpao/Xf;
  rXpp = Feed.Xpp/Xf;
  rXpha = Feed.Xpha/Xf;
  rXa = Feed.Xa/Xf;
  rXmeoh = Feed.Xmeoh/Xf;
  rXmep = Feed.Xmep/Xf;
  
end SecClarModTakacs;

WasteWater.ASM2d.blower

Information

This component models a blower of a wastewater treatment plant which generates
an airflow that is needed for the nitrification.

The blower is connected to the nitrification tank.

The airflow is controlled by a signal u (-1 <= u <= 1).

Parameters

Name	Default	Description
Q_max	20000	maximum blower capacity [m3 Air/d], this is produced when the control signal u is 1 or greater
Q_min	0.0	minimum blower capacity [m3 Air/d], this is produced when the control signal u is -1 or below

Modelica definition

model blower "Blower for the aeration of the nitrification tanks" 
  
  package WWU = WasteWater.WasteWaterUnits;
  extends WasteWater.Icons.blower;
  
  parameter WWU.VolumeFlowRate Q_max=20000 "maximum blower capacity";
  parameter WWU.VolumeFlowRate Q_min=0.0 "minimum blower capacity";
  Real H; // this is just a help variable to reduce expressions
  
  Interfaces.AirFlow AirOut;
  Modelica.Blocks.Interfaces.InPort u(final n=1);
equation 
  
  H = 0.5*(-Q_min + Q_max) + u.signal[1]*0.5*(-Q_min + Q_max) + Q_min;
  AirOut.Q_air = -(if H > Q_max then Q_max else if H < Q_min then Q_min else H);
  
end blower;

WasteWater.ASM2d.pump

Information

This component models an ASM2d wastewater pump. It generates a wastewater flow
that is controlled by the signal u (-1 <= u <=1).

Parameters

Name	Default	Description
Q_min	0.0	minimum pump capacity [m3/d], this is produced when the control signal u is -1 or below
Q_max	20000	maximum pump capacity [m3/d], this is produced when the control signal u is 1 or greater

Modelica definition

model pump "ASM2d wastewater pump" 
  
  package WWU = WasteWater.WasteWaterUnits;
  extends WasteWater.Icons.pump;
  
  parameter WWU.VolumeFlowRate Q_min=0.0 "minimum pump capacity";
  parameter WWU.VolumeFlowRate Q_max=20000 "maximum pump capacity";
  
  Real H;
  //help variable to reduce expressions
  
  Interfaces.WWFlowAsm2din In;
  Interfaces.WWFlowAsm2dout Out;
  Modelica.Blocks.Interfaces.InPort u(final n=1);
equation 
  
  H = 0.5*(-Q_min + Q_max) + u.signal[1]*0.5*(-Q_min + Q_max) + Q_min;
  
  Out.Q = -(if H > Q_max then Q_max else if H < Q_min then Q_min else H);
  Out.Q + In.Q = 0;
  
  Out.So = In.So;
  Out.Sf = In.Sf;
  Out.Sa = In.Sa;
  Out.Snh = In.Snh;
  Out.Sno = In.Sno;
  Out.Spo = In.Spo;
  Out.Si = In.Si;
  Out.Salk = In.Salk;
  Out.Sn2 = In.Sn2;
  Out.Xi = In.Xi;
  Out.Xs = In.Xs;
  Out.Xh = In.Xh;
  Out.Xpao = In.Xpao;
  Out.Xpp = In.Xpp;
  Out.Xpha = In.Xpha;
  Out.Xa = In.Xa;
  Out.Xtss = In.Xtss;
  Out.Xmeoh = In.Xmeoh;
  Out.Xmep = In.Xmep;
  
end pump;

WasteWater.ASM2d.FlowSource

Information

This component is used to feed an ASM2d wwtp model with flow data from measurement
when e.g. concentration is measured after the primary clarifier.

The dimension of InPort is 1:

   1  volumeflowrate Q of incoming wastewater [m3/d]

Modelica definition

model FlowSource "Flowsource" 
  
  extends WasteWater.Icons.FlowSource;
  Interfaces.WWFlowAsm2dout Out;
  Modelica.Blocks.Interfaces.InPort data(final n=1);
equation 
  
  Out.Q = -data.signal[1];
  
end FlowSource;

WasteWater.ASM2d.WWSource

Information

This component provides all ASM2d data at the influent of a wastewater treatment plant.

The dimension of InPort is 19:

  1  volumeflowrate Q of incoming wastewater [m3/d]
  2  So   [g O2/m3]
  3  Sf   [g COD/m3]
  4  Sa   [g COD/m3]
  5  Snh  [g N/m3]
  6  Sno  [g N/m3]
  7  Spo  [g P/m3]
  8  Si   [g COD/m3]
  9  Salk [mmol/l]
 10 Sn2  [g N/m3]
 11 Xi   [g COD/m3]
 12 Xs   [g COD/m3]
 13 Xh   [g COD/m3]
 14 Xpao [g COD/m3]
 15 Xpp  [g P/m3]
 16 Xpha [g COD/m3]
 17 Xa   [g COD/m3]
 18 Xmeoh [g TSS/m3]
 19 Xmep [g TSS/m3]

Parameters

Name	Default	Description
i_N_Si	0.01	N content of inert soluble COD Si [gN/gCOD]
i_N_Sf	0.03	N content of fermentable substrates Sf [gN/gCOD]
i_N_Xi	0.02	N content of inert particulate COD Xi [gN/gCOD]
i_N_Xs	0.04	N content of slowly biodegradable substrate Xs [gN/gCOD]
i_N_BM	0.07	N content of biomass, Xh, Xpao, Xa [gN/gCOD]
i_P_Si	0.0	P content of inert soluble COD Si [gP/gCOD]
i_P_Sf	0.01	P content of fermentable substrates Sf [gP/gCOD]
i_P_Xi	0.01	P content of inert particulate COD Xi [gP/gCOD]
i_P_Xs	0.01	P content of slowly biodegradable substrate Xs [gP/gCOD]
i_P_BM	0.02	P content of biomass, Xh, Xpao, Xa [gP/gCOD]
i_TSS_Xi	0.75	TSS to COD ratio for Xi [gTSS/gCOD]
i_TSS_Xs	0.75	TSS to COD ratio for Xs [gTSS/gCOD]
i_TSS_BM	0.9	TSS to COD ratio for biomass, Xh, Xpao, Xa [gTSS/gCOD]

Modelica definition

model WWSource "Wastewater source" 
  
  extends WasteWater.Icons.WWSource;
  extends ASM2d.Interfaces.conversion_factors;
  
  Interfaces.WWFlowAsm2dout Out;
  Modelica.Blocks.Interfaces.InPort data(final n=19);
equation 
  
  Out.Q = -data.signal[1];
  Out.So = data.signal[2];
  Out.Sf = data.signal[3];
  Out.Sa = data.signal[4];
  Out.Snh = data.signal[5];
  Out.Sno = data.signal[6];
  Out.Spo = data.signal[7];
  Out.Si = data.signal[8];
  Out.Salk = data.signal[9];
  Out.Sn2 = data.signal[10];
  Out.Xi = data.signal[11];
  Out.Xs = data.signal[12];
  Out.Xh = data.signal[13];
  Out.Xpao = data.signal[14];
  Out.Xpp = data.signal[15];
  Out.Xpha = data.signal[16];
  Out.Xa = data.signal[17];
  Out.Xtss = i_TSS_Xi*Out.Xi + i_TSS_Xs*Out.Xs + i_TSS_BM*(Out.Xh + Out.Xpao + 
    Out.Xa) + 3.23*Out.Xpp + 0.6*Out.Xpha + Out.Xmeoh + Out.Xmep;
  Out.Xmeoh = data.signal[18];
  Out.Xmep = data.signal[19];
  
end WWSource;

WasteWater.ASM2d.EffluentSink

Information

This component terminates an ASM2d wastewater treatment plant model 
e.g. the wastewater flow to the receiving water.

Modelica definition

model EffluentSink "Receiving water (river)" 
  // only for graphical termination in diagram layer, no equations needed
  
  extends WasteWater.Icons.EffluentSink;
  Interfaces.WWFlowAsm2din In;
equation 
  
end EffluentSink;

WasteWater.ASM2d.SludgeSink

Information

This component terminates the waste sludge stream of an ASM2d wastewater 
treatment plant model. Storage or further sludge treatment is not jet considered.

Modelica definition

model SludgeSink "Wastesludge sink" 
  // only for graphical termination in diagram layer, no equations needed
  
  extends WasteWater.Icons.SludgeSink;
  Interfaces.WWFlowAsm2din In;
equation 
  
end SludgeSink;

WasteWater.ASM2d.ControlledDivider2

Information

This component divides one wastewater flow (ASM2d) into two flows which are controlled 
by the signal u (0...1). Is u.signal=1, the flow goes to output 1 (Out1) and is u.signal=0,
 the flow goes to output 2 (Out2).

The concentrations of the outport-flows are equal to the concentration at inport.

Modelica definition

model ControlledDivider2 "Controlled flow divider" 
  // divides one flow of wastewater into 2 Flows controlled by the  
  // input signal u; u=1 means Out1.Q=In.Q and u=0 means Out2.Q=In.Q

   extends WasteWater.Icons.ControlledDivider2;
  
  Interfaces.WWFlowAsm2din In;
  Interfaces.WWFlowAsm2dout Out1;
  Interfaces.WWFlowAsm2dout Out2;
  Modelica.Blocks.Interfaces.InPort u(final n=1);
equation 
  
  Out1.Q = -In.Q*u.signal[1];
  Out2.Q = -In.Q*(1 - u.signal[1]);
  
  Out1.So = In.So;
  Out1.Sf = In.Sf;
  Out1.Sa = In.Sa;
  Out1.Snh = In.Snh;
  Out1.Sno = In.Sno;
  Out1.Spo = In.Spo;
  Out1.Si = In.Si;
  Out1.Salk = In.Salk;
  Out1.Sn2 = In.Sn2;
  Out1.Xi = In.Xi;
  Out1.Xs = In.Xs;
  Out1.Xh = In.Xh;
  Out1.Xpao = In.Xpao;
  Out1.Xpp = In.Xpp;
  Out1.Xpha = In.Xpha;
  Out1.Xa = In.Xa;
  Out1.Xtss = In.Xtss;
  Out1.Xmeoh = In.Xmeoh;
  Out1.Xmep = In.Xmep;
  
  Out2.So = In.So;
  Out2.Sf = In.Sf;
  Out2.Sa = In.Sa;
  Out2.Snh = In.Snh;
  Out2.Sno = In.Sno;
  Out2.Spo = In.Spo;
  Out2.Si = In.Si;
  Out2.Salk = In.Salk;
  Out2.Sn2 = In.Sn2;
  Out2.Xi = In.Xi;
  Out2.Xs = In.Xs;
  Out2.Xh = In.Xh;
  Out2.Xpao = In.Xpao;
  Out2.Xpp = In.Xpp;
  Out2.Xpha = In.Xpha;
  Out2.Xa = In.Xa;
  Out2.Xtss = In.Xtss;
  Out2.Xmeoh = In.Xmeoh;
  Out2.Xmep = In.Xmep;
  
end ControlledDivider2;

WasteWater.ASM2d.divider2

Information

This component divides one ASM2d wastewater flow into two ASM2d wastewater flows.

Modelica definition

model divider2 "Flowdivider"   
  // divides one flow of wastewater into 2 Flows; one amout needs to be specified
  
  extends WasteWater.Icons.divider2;
  Interfaces.WWFlowAsm2din In;
  Interfaces.WWFlowAsm2dout Out1;
  Interfaces.WWFlowAsm2dout Out2;
equation 
  
  In.Q + Out1.Q + Out2.Q = 0;
  
  Out1.So = In.So;
  Out1.Sf = In.Sf;
  Out1.Sa = In.Sa;
  Out1.Snh = In.Snh;
  Out1.Sno = In.Sno;
  Out1.Spo = In.Spo;
  Out1.Si = In.Si;
  Out1.Salk = In.Salk;
  Out1.Sn2 = In.Sn2;
  Out1.Xi = In.Xi;
  Out1.Xs = In.Xs;
  Out1.Xh = In.Xh;
  Out1.Xpao = In.Xpao;
  Out1.Xpp = In.Xpp;
  Out1.Xpha = In.Xpha;
  Out1.Xa = In.Xa;
  Out1.Xtss = In.Xtss;
  Out1.Xmeoh = In.Xmeoh;
  Out1.Xmep = In.Xmep;
  
  Out2.So = In.So;
  Out2.Sf = In.Sf;
  Out2.Sa = In.Sa;
  Out2.Snh = In.Snh;
  Out2.Sno = In.Sno;
  Out2.Spo = In.Spo;
  Out2.Si = In.Si;
  Out2.Salk = In.Salk;
  Out2.Sn2 = In.Sn2;
  Out2.Xi = In.Xi;
  Out2.Xs = In.Xs;
  Out2.Xh = In.Xh;
  Out2.Xpao = In.Xpao;
  Out2.Xpp = In.Xpp;
  Out2.Xpha = In.Xpha;
  Out2.Xa = In.Xa;
  Out2.Xtss = In.Xtss;
  Out2.Xmeoh = In.Xmeoh;
  Out2.Xmep = In.Xmep;
  
end divider2;

WasteWater.ASM2d.mixer2

Information

This component mixes two flows of wastewater (ASM2d) of different concentration and different amount.

Modelica definition

model mixer2 "Mixer of two ASM2d characterised flows" 
  
  extends WasteWater.Icons.mixer2;
  Interfaces.WWFlowAsm2din In1;
  Interfaces.WWFlowAsm2din In2;
  Interfaces.WWFlowAsm2dout Out;
equation 
  
  In1.Q + In2.Q + Out.Q = 0;
  
  Out.So = (In1.So*In1.Q + In2.So*In2.Q)/(In1.Q + In2.Q);
  Out.Sf = (In1.Sf*In1.Q + In2.Sf*In2.Q)/(In1.Q + In2.Q);
  Out.Sa = (In1.Sa*In1.Q + In2.Sa*In2.Q)/(In1.Q + In2.Q);
  Out.Snh = (In1.Snh*In1.Q + In2.Snh*In2.Q)/(In1.Q + In2.Q);
  Out.Sno = (In1.Sno*In1.Q + In2.Sno*In2.Q)/(In1.Q + In2.Q);
  Out.Spo = (In1.Spo*In1.Q + In2.Spo*In2.Q)/(In1.Q + In2.Q);
  Out.Si = (In1.Si*In1.Q + In2.Si*In2.Q)/(In1.Q + In2.Q);
  Out.Salk = (In1.Salk*In1.Q + In2.Salk*In2.Q)/(In1.Q + In2.Q);
  Out.Sn2 = (In1.Sn2*In1.Q + In2.Sn2*In2.Q)/(In1.Q + In2.Q);
  Out.Xi = (In1.Xi*In1.Q + In2.Xi*In2.Q)/(In1.Q + In2.Q);
  Out.Xs = (In1.Xs*In1.Q + In2.Xs*In2.Q)/(In1.Q + In2.Q);
  Out.Xh = (In1.Xh*In1.Q + In2.Xh*In2.Q)/(In1.Q + In2.Q);
  Out.Xpao = (In1.Xpao*In1.Q + In2.Xpao*In2.Q)/(In1.Q + In2.Q);
  Out.Xpp = (In1.Xpp*In1.Q + In2.Xpp*In2.Q)/(In1.Q + In2.Q);
  Out.Xpha = (In1.Xpha*In1.Q + In2.Xpha*In2.Q)/(In1.Q + In2.Q);
  Out.Xa = (In1.Xa*In1.Q + In2.Xa*In2.Q)/(In1.Q + In2.Q);
  Out.Xtss = (In1.Xtss*In1.Q + In2.Xtss*In2.Q)/(In1.Q + In2.Q);
  Out.Xmeoh = (In1.Xmeoh*In1.Q + In2.Xmeoh*In2.Q)/(In1.Q + In2.Q);
  Out.Xmep = (In1.Xmep*In1.Q + In2.Xmep*In2.Q)/(In1.Q + In2.Q);
  
end mixer2;

WasteWater.ASM2d.mixer3

Information

This component mixes 3 flows of wastewater (ASM2d) of different concentration and different amount.

Modelica definition

model mixer3 "Mixer of 3 ASM2d characterised flows" 
  
  extends WasteWater.Icons.mixer3;
  Interfaces.WWFlowAsm2din In1;
  Interfaces.WWFlowAsm2din In2;
  Interfaces.WWFlowAsm2din In3;
  Interfaces.WWFlowAsm2dout Out;
equation 
  
  In1.Q + In2.Q + In3.Q + Out.Q = 0;
  Out.So = (In1.So*In1.Q + In2.So*In2.Q + In3.So*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Sf = (In1.Sf*In1.Q + In2.Sf*In2.Q + In3.Sf*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Sa = (In1.Sa*In1.Q + In2.Sa*In2.Q + In3.Sa*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Snh = (In1.Snh*In1.Q + In2.Snh*In2.Q + In3.Snh*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Sno = (In1.Sno*In1.Q + In2.Sno*In2.Q + In3.Sno*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Spo = (In1.Spo*In1.Q + In2.Spo*In2.Q + In3.Spo*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Si = (In1.Si*In1.Q + In2.Si*In2.Q + In3.Si*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Salk = (In1.Salk*In1.Q + In2.Salk*In2.Q + In3.Salk*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Sn2 = (In1.Sn2*In1.Q + In2.Sn2*In2.Q + In3.Sn2*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xi = (In1.Xi*In1.Q + In2.Xi*In2.Q + In3.Xi*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xs = (In1.Xs*In1.Q + In2.Xs*In2.Q + In3.Xs*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xh = (In1.Xh*In1.Q + In2.Xh*In2.Q + In3.Xh*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xpao = (In1.Xpao*In1.Q + In2.Xpao*In2.Q + In3.Xpao*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xpp = (In1.Xpp*In1.Q + In2.Xpp*In2.Q + In3.Xpp*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xpha = (In1.Xpha*In1.Q + In2.Xpha*In2.Q + In3.Xpha*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xa = (In1.Xa*In1.Q + In2.Xa*In2.Q + In3.Xa*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xtss = (In1.Xtss*In1.Q + In2.Xtss*In2.Q + In3.Xtss*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xmeoh = (In1.Xmeoh*In1.Q + In2.Xmeoh*In2.Q + In3.Xmeoh*In3.Q)/(In1.Q + In2.Q + In3.Q);
  Out.Xmep = (In1.Xmep*In1.Q + In2.Xmep*In2.Q + In3.Xmep*In3.Q)/(In1.Q + In2.Q + In3.Q);
  
end mixer3;

WasteWater.ASM2d.sensor_COD

Information

This component measures the chemical oxygen demand (COD) concentration [g/m3]
of ASM2d wastewater and provides the result as output signal (to be further 
processed with blocks of the Modelica.Blocks library).

Modelica definition

model sensor_COD 
  "Ideal sensor to measure chemical oxygen demand (COD)" 
  
  extends WasteWater.Icons.sensor_COD;
  
  Interfaces.WWFlowAsm2din In;
  Modelica.Blocks.Interfaces.OutPort COD(final n=1);
equation 
  
  In.Q = 0.0;
  COD.signal[1] = In.Sf + In.Sa + In.Si + In.Xi + In.Xs + In.Xh + In.Xpao + In.
    Xpha + In.Xa;
  
end sensor_COD;

WasteWater.ASM2d.sensor_NH

Information

This component measures the ammonium nitrogen concentration [g/m3]
of ASM2d wastewater and provides the result as output signal (to be
further processed with blocks of the Modelica.Blocks library).

Modelica definition

model sensor_NH "Ideal sensor to measure ammonium nitrogen" 
  
  extends WasteWater.Icons.sensor_NH;
  
  Interfaces.WWFlowAsm2din In;
  Modelica.Blocks.Interfaces.OutPort Snh(final n=1);
equation 
  
  In.Q = 0;
  Snh.signal[1] = In.Snh;
  
end sensor_NH;

WasteWater.ASM2d.sensor_NO

Information

This component measures the nitrate nitrogen concentration [g/m3]
of ASM2d wastewater and provides the result as output signal (to be
further processed with blocks of the Modelica.Blocks library).

Modelica definition

model sensor_NO "Ideal sensor to measure nitrate nitrogen" 
  
  extends WasteWater.Icons.sensor_NO;
  
  Interfaces.WWFlowAsm2din In;
  Modelica.Blocks.Interfaces.OutPort Sno(final n=1);
equation 
  
  In.Q = 0;
  Sno.signal[1] = In.Sno;
  
end sensor_NO;

WasteWater.ASM2d.sensor_O2

Information

This component measures the dissolved oxygen concentration [g/m3]
of ASM2d wastewater and provides the result as output signal (to be
further processed with blocks of the Modelica.Blocks library).

Modelica definition

model sensor_O2 
  "Ideal sensor to measure dissolved oxygen concentration" 
  
  extends WasteWater.Icons.sensor_O2;
  
  Interfaces.WWFlowAsm2din In;
  Modelica.Blocks.Interfaces.OutPort So(final n=1);
equation 
  
  In.Q = 0;
  So.signal[1] = In.So;
  
end sensor_O2;

WasteWater.ASM2d.sensor_PO

Information

This component measures the dissolves phosphorus concentration [g/m3]
of ASM2d wastewater and provides the result as output signal (to be
further processed with blocks of the Modelica.Blocks library).

Modelica definition

model sensor_PO "Ideal sensor to measure dissolved phosphorus" 
  
  extends WasteWater.Icons.sensor_PO;
  
  Interfaces.WWFlowAsm2din In;
  Modelica.Blocks.Interfaces.OutPort Spo(final n=1);
equation 
  
  In.Q = 0;
  Spo.signal[1] = In.Spo;
  
end sensor_PO;

WasteWater.ASM2d.sensor_Q

Information

This component measures the flow of an ASM2d wastewater stream and provides
the result as output signal (to be further processed with blocks of
the Modelica.Blocks library).

Modelica definition

model sensor_Q 
  "Ideal sensor to measure the flow rate of an ASM2d wastewater stream"
   
  
  extends WasteWater.Icons.sensor_Q;
  
  Interfaces.WWFlowAsm2din In;
  Interfaces.WWFlowAsm2dout Out;
  Modelica.Blocks.Interfaces.OutPort Q(final n=1);
equation 
  
  In.Q + Out.Q = 0;
  Q.signal[1] = In.Q;
  // eventually abs(In.Q) to be shure to have pos. signal
  In.So = Out.So;
  In.Sf = Out.Sf;
  In.Sa = Out.Sa;
  In.Snh = Out.Snh;
  In.Sno = Out.Sno;
  In.Spo = Out.Spo;
  In.Si = Out.Si;
  In.Salk = Out.Salk;
  In.Sn2 = Out.Sn2;
  In.Xi = Out.Xi;
  In.Xs = Out.Xs;
  In.Xh = Out.Xh;
  In.Xpao = Out.Xpao;
  In.Xpp = Out.Xpp;
  In.Xpha = Out.Xpha;
  In.Xa = Out.Xa;
  In.Xtss = Out.Xtss;
  In.Xmeoh = Out.Xmeoh;
  In.Xmep = Out.Xmep;
  
end sensor_Q;

WasteWater.ASM2d.sensor_TKN

Information

This component measures the Total Kjeldal Nitrogen (TKN) and the total nitrogen (N_total)
concentration [g/m3] of ASM2d wastewater and provides the result as output signal
(to be further processed with blocks of the Modelica.Blocks library).

signal[1] - TKN
signal[2] - N_total

Parameters

Name	Default	Description
i_N_Si	0.01	N content of inert soluble COD Si [gN/gCOD]
i_N_Sf	0.03	N content of fermentable substrates Sf [gN/gCOD]
i_N_Xi	0.02	N content of inert particulate COD Xi [gN/gCOD]
i_N_Xs	0.04	N content of slowly biodegradable substrate Xs [gN/gCOD]
i_N_BM	0.07	N content of biomass, Xh, Xpao, Xa [gN/gCOD]
i_P_Si	0.0	P content of inert soluble COD Si [gP/gCOD]
i_P_Sf	0.01	P content of fermentable substrates Sf [gP/gCOD]
i_P_Xi	0.01	P content of inert particulate COD Xi [gP/gCOD]
i_P_Xs	0.01	P content of slowly biodegradable substrate Xs [gP/gCOD]
i_P_BM	0.02	P content of biomass, Xh, Xpao, Xa [gP/gCOD]
i_TSS_Xi	0.75	TSS to COD ratio for Xi [gTSS/gCOD]
i_TSS_Xs	0.75	TSS to COD ratio for Xs [gTSS/gCOD]
i_TSS_BM	0.9	TSS to COD ratio for biomass, Xh, Xpao, Xa [gTSS/gCOD]

Modelica definition

model sensor_TKN "Ideal TKN and total nitrogen sensor" 
  
  extends WasteWater.Icons.sensor_TKN;
  extends Interfaces.conversion_factors;
  Interfaces.WWFlowAsm2din In;
  Modelica.Blocks.Interfaces.OutPort TKN(final n=2);
equation 
  
  In.Q = 0.0;
  TKN.signal[1] = In.Snh + i_N_Si*In.Si + i_N_Sf*In.Sf + i_N_Xi*In.Xi
                     + i_N_Xs*In.Xs + i_N_BM*(In.Xh + In.Xpao + In.Xa);
  TKN.signal[2] = TKN.signal[1] + In.Sno;
  
end sensor_TKN;

WasteWater.ASM2d.sensor_TP

Information

This component measures the total phosphorus concentration [g/m3]
of ASM2d wastewater and provides the result as output signal (to be
further processed with blocks of the Modelica.Blocks library).

Parameters

Name	Default	Description
i_N_Si	0.01	N content of inert soluble COD Si [gN/gCOD]
i_N_Sf	0.03	N content of fermentable substrates Sf [gN/gCOD]
i_N_Xi	0.02	N content of inert particulate COD Xi [gN/gCOD]
i_N_Xs	0.04	N content of slowly biodegradable substrate Xs [gN/gCOD]
i_N_BM	0.07	N content of biomass, Xh, Xpao, Xa [gN/gCOD]
i_P_Si	0.0	P content of inert soluble COD Si [gP/gCOD]
i_P_Sf	0.01	P content of fermentable substrates Sf [gP/gCOD]
i_P_Xi	0.01	P content of inert particulate COD Xi [gP/gCOD]
i_P_Xs	0.01	P content of slowly biodegradable substrate Xs [gP/gCOD]
i_P_BM	0.02	P content of biomass, Xh, Xpao, Xa [gP/gCOD]
i_TSS_Xi	0.75	TSS to COD ratio for Xi [gTSS/gCOD]
i_TSS_Xs	0.75	TSS to COD ratio for Xs [gTSS/gCOD]
i_TSS_BM	0.9	TSS to COD ratio for biomass, Xh, Xpao, Xa [gTSS/gCOD]

Modelica definition

model sensor_TP 
  "Ideal sensor to measure the total phosphorus concentration in ASM2d wastewater"
   
  
  extends WasteWater.Icons.sensor_TP;
  extends Interfaces.conversion_factors;
  Interfaces.WWFlowAsm2din In;
  Modelica.Blocks.Interfaces.OutPort TP(final n=1);
equation 
  
  In.Q = 0.0;
  TP.signal[1] = In.Spo + In.Xpp + i_P_Sf*In.Sf + i_P_Si*In.Si + i_P_Xi*In.Xi
     + i_P_Xs*In.Xs + i_P_BM*(In.Xh + In.Xa + In.Xpao) + In.Xmep/4.87;
  
end sensor_TP;

WasteWater.ASM2d.sensor_TSS

Information

This component measures the total suspended solids concentration [g/m3]
of ASM2d wastewater and provides the result as output signal (to be
further processed with blocks of the Modelica.Blocks library).

Modelica definition

model sensor_TSS 
  "Ideal sensor to measure total suspended solids concentration (ASM2d)"
   
  
  extends WasteWater.Icons.sensor_TSS;
  Interfaces.WWFlowAsm2din In;
  Modelica.Blocks.Interfaces.OutPort TSS(final n=1);
equation 
  
  In.Q = 0;
  TSS.signal[1] = In.Xtss;
  
end sensor_TSS;