Wetlands Module Parameters I
Parameters for the Constructed Wetland CW2D and CWM1 Modules are entered in the Constructed Wetland Model Parameters I and Constructed Wetland Parameters II dialog windows. Detailed description of input parameters for both modules is given below.
1. Parameters for the CW2D module are given in the following window:
Kinetic parameters in the CW2D biokinetic model [Langergraber and Šimůnek, 2005].
Description [unit] |
Value |
|
Hydrolysis |
for 20°C (10°C) |
|
Kh |
hydrolysis rate constant [1/d] |
3 (2) |
KX |
saturation/inhibition coefficient for hydrolysis [g CODCS/g CODBM] |
0.1 (0.22) |
Heterotrophic bacteria (aerobic growth) |
||
μH |
maximum aerobic growth rate on CR [1/d] |
6 (3) |
bH |
rate constant for lysis [1/d] |
0.4 (0.2) |
Khet,O2 |
saturation/inhibition coefficient for SO [mg O2/L] |
0.2 |
Khet,CR |
saturation/inhibition coefficient for substrate [mg CODCR/L] |
2 |
Khet,NH4N |
saturation/inhibition coefficient for NH4 (nutrient) [mg N/L] |
0.05 |
Khet,IP |
saturation/inhibition coefficient for P [mg N/L] |
0.01 |
Heterotrophic bacteria (denitrification) |
||
μDN |
maximum aerobic growth rate on CR [1/d] |
4.8 (2.4) |
Khet,O2 |
saturation/inhibition coefficient for SO [mg O2/L] |
0.2 |
Khet,NO3N |
saturation/inhibition coefficient for NO3 [mg N/L] |
0.5 |
Khet,NO2N |
saturation/inhibition coefficient for NO2 [mg N/L] |
0.5 |
Khet,CR |
saturation/inhibition coefficient for substrate [mg CODCR/L] |
4 |
Khet,NH4N |
saturation/inhibition coefficient for NH4 (nutrient) [mg N/L] |
0.05 |
Khet,IP |
saturation/inhibition coefficient for P [mg N/L] |
0.01 |
Ammonia oxidising bacteria (Nitrosomonas spp.) |
||
μANs |
maximum aerobic growth rate on SNH [1/d] |
0.9 (0.3) |
bANs |
rate constant for lysis [1/d] |
0.15 (0.05) |
KANs,O2 |
saturation/inhibition coefficient for SO [mg O2/L] |
1 |
KANs,NH4N |
saturation/inhibition coefficient for NH4 [mg N/L] |
0.5 |
KANs,IP |
saturation/inhibition coefficient for P [mg N/L] |
0.01 |
Nitrite oxidising bacteria (Nitrobacter spp.) |
||
μANb |
maximum aerobic growth rate on SNH [1/d] |
1 (0.35) |
bANb |
rate constant for lysis [1/d] |
0.15 (0.05) |
KANb,O2 |
saturation/inhibition coefficient for SO [mg O2/L] |
0.1 |
KANb,NO2N |
saturation/inhibition coefficient for NO2 [mg N/L] |
0.1 |
KANb,NH4N |
saturation/inhibition coefficient for NH4 (nutrient) [mg N/L] |
0.05 |
KANb,IP |
saturation/inhibition coefficient for P [mg N/L] |
0.01 |
2. Parameters for the CWM1 module are given in the following window:
Kinetic parameters in the CWM1 biokinetic model [Langergraber et al., 2009].
Parameter |
Description [unit] |
Value |
|
Hydrolysis |
for 20°C (10°C) |
||
Kh |
hydrolysis rate constant [1/d] |
3 (2) |
|
KX |
saturation/inhibition coefficient for hydrolysis [g CODSF/g CODBM] |
0.1 (0.22) |
|
ηH |
correction factor for hydrolysis by fermenting bacteria [-] |
0.1 |
|
Heterotrophic bacteria (aerobic growth and denitrification) |
|||
μH |
maximum aerobic growth rate on SF and SA [1/d] |
6 (3) |
|
ηg |
correction factor for denitrification by XH [-] |
0.8 |
|
bH |
rate constant for lysis [1/d] |
0.4 (0.2) |
|
KOH |
saturation/inhibition coefficient for SO [mg O2/L] |
0.2 |
|
KSF |
saturation/inhibition coefficient for SF [mg CODSF/L] |
2 |
|
KSA |
saturation/inhibition coefficient for SA [mg CODSA/L] |
4 |
|
KNOH |
saturation/inhibition coefficient for SNO [mg N/L] |
0.5 |
|
KNHH |
saturation/inhibition coefficient for SNH (nutrient) [mg N/L] |
0.05 |
|
KH2SH |
saturation/inhibition coefficient for SH2S [mg S/L] |
140 |
|
Autotrophic bacteria |
|||
μA |
maximum aerobic growth rate on SNH [1/d] |
1 (0.35) |
|
bA |
rate constant for lysis [1/d] |
0.15 (0.05) |
|
KOA |
saturation/inhibition coefficient for SO [mg O2/L] |
1 |
|
KNHA |
saturation/inhibition coefficient for SNH [mg N/L] |
0.5 (5) |
|
KH2SA |
saturation/inhibition coefficient for SH2S [mg S/L] |
140 |
|
Fermenting bacteria |
|||
μFB |
maximum aerobic growth rate for XFB [1/d] |
3 (1.5) |
|
bFB |
rate constant for lysis [1/d] |
0.02 |
|
KOFB |
saturation/inhibition coefficient for SO [mg O2/L] |
0.2 |
|
KSFB |
saturation/inhibition coefficient for SF [mg CODSF/L] |
28 |
|
KNOFB |
saturation/inhibition coefficient for SNO [mg N/L] |
0.5 |
|
KNHFB |
saturation/inhibition coefficient for SNH (nutrient) [mg N/L] |
0.01 |
|
KH2SFB |
saturation/inhibition coefficient for SH2S [mg S/L] |
140 |
|
Acetotrophic methanogenic bacteria |
|||
μAMB |
maximum aerobic growth rate on for XAMB [1/d] |
0.085 |
|
bAMB |
rate constant for lysis [1/d] |
0.008 |
|
KOAMB |
saturation/inhibition coefficient for SO [mg O2/L] |
0.0002 |
|
KSAMB |
saturation/inhibition coefficient for SA [mg CODSA/L] |
56 |
|
KNOAMB |
saturation/inhibition coefficient for SNO [mg N/L] |
0.0005 |
|
KNHAMB |
saturation/inhibition coefficient for SNH (nutrient) [mg N/L] |
0.01 |
|
KH2SAMB |
saturation/inhibition coefficient for SH2S [mg S/L] |
140 |
|
Acetotrophic sulphate reducing bacteria |
|||
μASRB |
maximum aerobic growth rate for XASRB [1/d] |
0.18 |
|
bASRB |
rate constant for lysis [1/d] |
0.012 |
|
KOASRB |
saturation/inhibition coefficient for SO [mg O2/L] |
0.0002 |
|
KSASRB |
saturation/inhibition coefficient for SA [mg CODSA/L] |
24 |
|
KNOASRB |
saturation/inhibition coefficient for SNO [mg N/L] |
0.0005 |
|
KNHASRB |
saturation/inhibition coefficient for SNH (nutrient) [mg N/L] |
0.01 |
|
KSOASRB |
saturation/inhibition coefficient for SSO4 [mg S/L] |
19 |
|
KH2SASRB |
saturation/inhibition coefficient for SH2S [mg S/L] |
140 |
|
Sulphide oxidising bacteria |
|||
μSOB |
maximum aerobic growth rate for XSOB [1/d] |
5.28 |
|
ηSOB |
correction factor for anoxic growth of XSOB [-] |
0.8 |
|
bSOB |
rate constant for lysis [1/d] |
0.15 |
|
KOSOB |
saturation/inhibition coefficient for SO [mg O2/L] |
0.2 |
|
KNOSOB |
saturation/inhibition coefficient for SNO [mg N/L] |
0.5 |
|
KNHSOB |
saturation/inhibition coefficient for SNH (nutrient) [mg N/L] |
0.05 |
|
KSSOB |
saturation/inhibition coefficient for SH2S [mg S/L] |
0.24 |
|