| Source |
Emission
Factors |
|
Parameters |
|
|
| Stage I/II
- Inlet Pumping Stations |
Unmitigated |
1.3830E+00 |
Odour Emission
Rate (OU/s) |
E = DF x A x (V/3600)
x Cf |
|
| (IN201) |
OU/s/m2 |
|
|
|
|
| |
|
|
Dilution factor, DF (OU/m3) |
1915 |
calculated, DF = 1.6 x (T/10)4.9 x (ORP + 200)-0.59 |
| |
|
|
Temperature of sewage, T (F) |
86 |
assumed |
| |
|
|
Oxidation-reduction potential of
sewage, ORP (mV) |
150 |
assumed |
| |
|
|
Air volume of the emission
source, A (m3) |
16 |
assumed (1*Surface Area) |
| |
|
|
Surface Area (m2) |
16 |
estimated base exposed area of
facilities |
| |
|
|
Ventilation rate, V (air changes
per hour) |
5 |
assumed 5 air changes per hour
for opened area |
| |
|
|
Correction
factor, Cf |
0.52 |
for 5 air changes per hour |
| |
|
|
|
|
|
| Deodourizing unit 1 |
Mitigated |
2.2129E-01 |
Surface Area (m2) |
16 |
Exposed surface Area of Inlet
Works |
| (Stage I/II - Inlet
Pumping Stations) |
OU/s |
|
Total Air flow rate of the
emission source (m3/s) |
0.16 |
from DSD |
| (IN2) |
|
|
Emission Height, (m) |
3.0 |
above ground |
| |
|
|
Diameter of the stack, (m) |
0.3 |
|
| |
|
|
Stack velocity, (m/s) |
2.20 |
calculated |
| |
|
|
Mitigation % |
99 |
|
| |
|
|
|
|
|
| Stage I/II - Grit Removal
and |
Unmitigated |
1.3830E+00 |
Odour Emission Rate (OU/s) |
E = DF x A x (V/3600)
x Cf |
|
| Flume Channel |
OU/s/m2 |
|
|
|
|
| (GR201-GR202) |
|
|
Dilution factor, DF (OU/m3) |
1915 |
calculated, DF = 1.6 x (T/10)4.9 x (ORP + 200)-0.59 |
| |
|
|
Temperature of sewage, T (F) |
86 |
assumed |
| (2 nos. operated) |
Mitigated |
0.0000E+00 |
Oxidation-reduction potential of
sewage, ORP (mV) |
150 |
assumed |
| |
OU/s/m2 |
(covered) |
Air volume of the emission
source, A (m3) |
99 |
assumed (1*Surface Area) |
| |
|
|
Surface Area of Grit Removal (m2) |
84 |
estimated base exposed area of
faculties |
| |
|
|
Surface Area of Flume Channel
(m2) |
15 |
estimated base exposed area of
faculties |
| |
|
|
Ventilation rate, V (air changes
per hour) |
5 |
assumed 5 air changes per hour
for opened area |
| |
|
|
Correction
factor, Cf |
0.52 |
for 5 air changes per hour |
| |
|
|
|
|
|
| Stage I/II - Primary |
|
|
Odour Emission Rate (OU/s/m2) |
Eton = 4 x 10-3(0.0103Vwind1.42 + 2.93 Vliquid) x OP |
|
| Sedimentation |
|
|
Odour potential, OP (OU/m3) |
3305 |
from Yang & Hobson |
| Tanks (at Weir) |
|
|
Velocity of liquid, Vliquid (m/s) |
2.5715E-04 |
from DSD |
| (PRI201-PRI203,
PRI205-PRI207) |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 0.5m |
|
|
| (6 nos. operated+2
standby in all phase) |
Equiescent
zone- class A |
9.9697E-03 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| "Quiescent" Zone |
Equiescent
zone- class B |
9.9813E-03 |
Wind Speed at emission source, Vwind-A (m/s) |
1.1389E-03 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
9.9883E-03 |
Wind Speed at emission source, Vwind-B (m/s) |
2.0415E-03 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
9.9974E-03 |
Wind Speed at emission source, Vwind-C (m/s) |
2.5078E-03 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
9.9775E-03 |
Wind Speed at emission source, Vwind-D (m/s) |
3.0666E-03 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
9.9651E-03 |
Wind Speed at emission source, Vwind-E (m/s) |
1.7687E-03 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
6.8809E-04 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
2.5620E-01 |
calculated, (for stability class
A) |
| |
|
|
Friction velocity, UB* (m/s) |
4.3426E-01 |
calculated, (for stability class
B) |
| |
|
|
Friction velocity, UC* (m/s) |
5.1711E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
6.2928E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
3.6076E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.3468E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.7093E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.0799E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-4.0845E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
4.0845E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.0799E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
0.501 |
|
| |
|
|
Z0, (m) |
0.5 |
|
| "Quiescent" Zone |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 1.0m |
|
|
| |
Equiescent
zone- class A |
1.0079E-02 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
1.0235E-02 |
Wind Speed at emission source, Vwind-A (m/s) |
6.9802E-03 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
1.0330E-02 |
Wind Speed at emission source, Vwind-B (m/s) |
1.2640E-02 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
1.0454E-02 |
Wind Speed at emission source, Vwind-C (m/s) |
1.5583E-02 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
1.0188E-02 |
Wind Speed at emission source, Vwind-D (m/s) |
1.9107E-02 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
1.0021E-02 |
Wind Speed at emission source, Vwind-E (m/s) |
1.1072E-02 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
4.3420E-03 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
3.3313E-01 |
calculated, (for stability class
A) |
| |
|
|
Friction velocity, UB* (m/s) |
5.5312E-01 |
calculated, (for stability class
B) |
| |
|
|
Friction velocity, UC* (m/s) |
6.4713E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
7.8732E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
4.5180E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.6472E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.8357E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.7207E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-5.0458E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
5.0458E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.7207E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
1.01 |
|
| |
|
|
Z0, (m) |
1 |
|
| |
|
|
|
|
|
| Weir Zone |
Eweir |
1.6258E+00 |
Odour Emission Rate at weir
(OU/s/m) |
E = 7.16 x 10-4 x OP x Fweir x h x KpH |
|
| (PRI209-PRI211) |
Unmitigated |
|
Weir loading rate, Fweir (m3/m/h) |
4.74 |
from DSD |
| |
OU/s/m2 |
|
Height of drops of liquid flow at
weirs, h (m) |
0.083 |
estimated base on physical
dimension of faculties |
| |
|
|
pH correction coefficient, KpH |
1.17 |
pH=7, from DSD |
| |
|
|
Surface Area of weir per each
tank(m2) |
43.2 |
estimated base on physical
dimension of facilities, (px (21.8/2)2- 330 )m2 |
| (PRI209-PRI215) |
Mitigated |
0.0000E+00 |
Surface Area of
"quiescent" zone per each tank(m2) |
330 |
estimated base on physical
dimension of facilities, px (21.8/2-0.65)2 m2 |
| |
OU/s/m2 |
(covered) |
Weir width per each tank(m) |
0.65 |
estimated base on physical
dimension of facilities |
| |
|
|
Weir length per each tank(m) |
64 |
diameter of inner zone = 20.5 |
| |
|
|
Dry Weather Flow (m3/d) |
44000 |
from DSD |
| |
|
|
No. of Tanks |
6 |
|
| |
|
|
|
|
|
| Stage I/II - Bioreactor |
|
|
Odour Emission Rate (OU/s/m2) |
Eton = 4 x 10-3(0.0103Vwind1.42 + 2.93 Vliquid) x OP |
|
| (AER201-AER202) |
|
|
Odour potential, OP (OU/m3) |
710 |
from Yang & Hobson |
| |
|
|
Velocity of liquid, Vliquid (m/s) |
4.0417E-03 |
from DSD |
| (5 nos. operated+1
standby in all phase) |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 0.5m |
|
|
| |
Equiescent
zone- class A |
3.3634E-02 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
3.3637E-02 |
Wind Speed at emission source, Vwind-A (m/s) |
1.1389E-03 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
3.3638E-02 |
Wind Speed at emission source, Vwind-B (m/s) |
2.0415E-03 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
3.3640E-02 |
Wind Speed at emission source, Vwind-C (m/s) |
2.5078E-03 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
3.3636E-02 |
Wind Speed at emission source, Vwind-D (m/s) |
3.0666E-03 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
3.3633E-02 |
Wind Speed at emission source, Vwind-E (m/s) |
1.7687E-03 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
6.8809E-04 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
2.5620E-01 |
calculated, (for stability class
A) |
| |
|
|
Friction velocity, UB* (m/s) |
4.3426E-01 |
calculated, (for stability class
B) |
| |
|
|
Friction velocity, UC* (m/s) |
5.1711E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
6.2928E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
3.6076E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.3468E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.7093E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.0799E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-4.0845E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
4.0845E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.0799E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
0.501 |
|
| |
|
|
Z0, (m) |
0.5 |
|
| |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 1.0m |
|
|
| |
Equiescent
zone- class A |
3.3658E-02 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
3.3691E-02 |
Wind Speed at emission source, Vwind-A (m/s) |
6.9802E-03 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
3.3712E-02 |
Wind Speed at emission source, Vwind-B (m/s) |
1.2640E-02 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
3.3738E-02 |
Wind Speed at emission source, Vwind-C (m/s) |
1.5583E-02 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
3.3681E-02 |
Wind Speed at emission source, Vwind-D (m/s) |
1.9107E-02 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
3.3645E-02 |
Wind Speed at emission source, Vwind-E (m/s) |
1.1072E-02 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
4.3420E-03 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
3.3313E-01 |
calculated, (for stability class
A) |
| |
|
|
Friction velocity, UB* (m/s) |
5.5312E-01 |
calculated, (for stability class
B) |
| |
|
|
Friction velocity, UC* (m/s) |
6.4713E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
7.8732E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
4.5180E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.6472E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.8357E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.7207E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-5.0458E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
5.0458E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.7207E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
1.01 |
|
| |
|
|
Z0, (m) |
1 |
|
| |
|
|
|
|
|
| Final |
Unmitigated |
|
Odour Emission Rate (OU/s/m2) |
Eton = 4 x 10-3(0.0103Vwind1.42 + 2.93 Vliquid) x OP |
|
| Sedimentation Tanks |
OU/s/m2 |
|
Odour potential, OP (OU/m3) |
710 |
from Yang & Hobson |
| (Stage I/II -
FST201-FST204) |
|
|
Velocity of liquid, Vliquid (m/s) |
1.3644E-04 |
from DSD |
| (Stage V - FST205-FST206) |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 0.5m |
|
|
| (10 nos. operated in all
phase) |
Equiescent
zone- class A |
1.1373E-03 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
1.1398E-03 |
Wind Speed at emission source, Vwind-A (m/s) |
1.1389E-03 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
1.1413E-03 |
Wind Speed at emission source, Vwind-B (m/s) |
2.0415E-03 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
1.1432E-03 |
Wind Speed at emission source, Vwind-C (m/s) |
2.5078E-03 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
1.1389E-03 |
Wind Speed at emission source, Vwind-D (m/s) |
3.0666E-03 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
1.1363E-03 |
Wind Speed at emission source, Vwind-E (m/s) |
1.7687E-03 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
6.8809E-04 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
2.5620E-01 |
calculated, (for stability class
A) |
| |
|
|
Friction velocity, UB* (m/s) |
4.3426E-01 |
calculated, (for stability class
B) |
| |
|
|
Friction velocity, UC* (m/s) |
5.1711E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
6.2928E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
3.6076E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.3468E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.7093E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.0799E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-4.0845E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
4.0845E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.0799E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
0.501 |
|
| |
|
|
Z0, (m) |
0.5 |
|
| |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 1.0m |
|
|
| |
Equiescent
zone- class A |
1.1607E-03 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
1.1943E-03 |
Wind Speed at emission source, Vwind-A (m/s) |
6.9802E-03 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
1.2147E-03 |
Wind Speed at emission source, Vwind-B (m/s) |
1.2640E-02 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
1.2414E-03 |
Wind Speed at emission source, Vwind-C (m/s) |
1.5583E-02 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
1.1842E-03 |
Wind Speed at emission source, Vwind-D (m/s) |
1.9107E-02 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
1.1483E-03 |
Wind Speed at emission source, Vwind-E (m/s) |
1.1072E-02 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
4.3420E-03 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
3.3313E-01 |
calculated, (for stability class
A) |
| |
|
|
Friction velocity, UB* (m/s) |
5.5312E-01 |
calculated, (for stability class
B) |
| |
|
|
Friction velocity, UC* (m/s) |
6.4713E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
7.8732E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
4.5180E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.6472E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.8357E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.7207E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-5.0458E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
5.0458E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.7207E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
1.01 |
|
| |
|
|
Z0, (m) |
1 |
|
| |
|
|
|
|
|
| Stage I/II - Return |
|
|
Odour Emission Rate (OU/s/m2) |
Eton = 4 x 10-3(0.0103Vwind1.42 + 2.93 Vliquid) x OP |
|
| Activated Sludge Pumping |
|
|
Odour potential, OP (OU/m3) |
710 |
from Yang & Hobson |
| Station |
|
|
Velocity of liquid, Vliquid (m/s) |
0.139 |
from DSD |
| (RAS2) |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 0.5m |
|
|
| |
Equiescent
zone- class A |
1.1826E+00 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
1.2196E+00 |
Wind Speed at emission source, Vwind-A (m/s) |
9.1877E-01 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
1.2456E+00 |
Wind Speed at emission source, Vwind-B (m/s) |
1.7148E+00 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
1.2764E+00 |
Wind Speed at emission source, Vwind-C (m/s) |
2.1888E+00 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
1.2123E+00 |
Wind Speed at emission source, Vwind-D (m/s) |
2.6980E+00 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
1.1726E+00 |
Wind Speed at emission source, Vwind-E (m/s) |
1.5722E+00 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
6.5319E-01 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
2.5620E-01 |
calculated, (for stability class
A) |
| |
Mitigated |
0.0000E+00 |
Friction velocity, UB* (m/s) |
4.3426E-01 |
calculated, (for stability class
B) |
| |
OU/s/m2 |
(Covered) |
Friction velocity, UC* (m/s) |
5.1711E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
6.2928E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
3.6076E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.3468E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.7093E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.0799E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-4.0845E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
4.0845E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.0799E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
2.9 |
|
| |
|
|
Z0, (m) |
0.5 |
|
| |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 1.0m |
|
|
| |
Equiescent
zone- class A |
1.1743E+00 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
1.1994E+00 |
Wind Speed at emission source, Vwind-A (m/s) |
7.0191E-01 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
1.2166E+00 |
Wind Speed at emission source, Vwind-B (m/s) |
1.3062E+00 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
1.2374E+00 |
Wind Speed at emission source, Vwind-C (m/s) |
1.6578E+00 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
1.1943E+00 |
Wind Speed at emission source, Vwind-D (m/s) |
2.0445E+00 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
1.1674E+00 |
Wind Speed at emission source, Vwind-E (m/s) |
1.1937E+00 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
4.9288E-01 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
3.3313E-01 |
calculated, (for stability class
A) |
| |
Mitigated |
0.0000E+00 |
Friction velocity, UB* (m/s) |
5.5312E-01 |
calculated, (for stability class
B) |
| |
OU/s/m2 |
(Covered) |
Friction velocity, UC* (m/s) |
6.4713E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
7.8732E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
4.5180E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.6472E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.8357E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.7207E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-5.0458E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
5.0458E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.7207E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
2.9 |
|
| |
|
|
Z0, (m) |
1 |
|
| |
|
|
|
|
|
| Stage I/II - Sequence
Batch Reactor |
|
|
Odour Emission Rate (OU/s/m2) |
Eton = 4 x 10-3(0.0103Vwind1.42 + 2.93 Vliquid) x OP |
|
| (SBR2) |
|
|
Odour potential, OP (OU/m3) |
710 |
from Yang & Hobson |
| |
|
|
Velocity of liquid, Vliquid (m/s) |
0.0000E+00 |
from
DSD (The sewage flow is not continuous, a few batches per day |
| |
Unmitigated |
|
|
|
from dewatering house) |
| |
OU/s/m2 |
|
For surface roughness Zo = 0.5m |
|
|
| |
Equiescent
zone- class A |
1.9336E-06 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
4.4287E-06 |
Wind Speed at emission source, Vwind-A (m/s) |
1.1389E-03 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
5.9314E-06 |
Wind Speed at emission source, Vwind-B (m/s) |
2.0415E-03 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
7.8924E-06 |
Wind Speed at emission source, Vwind-C (m/s) |
2.5078E-03 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
3.6125E-06 |
Wind Speed at emission source, Vwind-D (m/s) |
3.0666E-03 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
9.4539E-07 |
Wind Speed at emission source, Vwind-E (m/s) |
1.7687E-03 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
6.8809E-04 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
2.5620E-01 |
calculated, (for stability class
A) |
| |
|
|
Friction velocity, UB* (m/s) |
4.3426E-01 |
calculated, (for stability class
B) |
| |
|
|
Friction velocity, UC* (m/s) |
5.1711E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
6.2928E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
3.6076E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.3468E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.7093E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.0799E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-4.0845E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
4.0845E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.0799E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
0.501 |
|
| |
|
|
Z0, (m) |
0.5 |
|
| |
Unmitigated |
|
|
|
|
| |
OU/s/m2 |
|
For surface roughness Zo = 1.0m |
|
|
| |
Equiescent
zone- class A |
2.5378E-05 |
Wind Speed at emission source, Vwind (m/s) |
Uz = (U* / k) x [ln(Z1 / Zo)-yM(Z1/L)+(yM(Z0/L)] from Komari et
al., |
|
| |
Equiescent
zone- class B |
5.8973E-05 |
Wind Speed at emission source, Vwind-A (m/s) |
6.9802E-03 |
calculated (for stability class
A) |
| |
Equiescent
zone- class C |
7.9382E-05 |
Wind Speed at emission source, Vwind-B (m/s) |
1.2640E-02 |
calculated (for stability class
B) |
| |
Equiescent
zone- class D |
1.0604E-04 |
Wind Speed at emission source, Vwind-C (m/s) |
1.5583E-02 |
calculated (for stability class
C) |
| |
Equiescent
zone- class E |
4.8863E-05 |
Wind Speed at emission source, Vwind-D (m/s) |
1.9107E-02 |
calculated (for stability class
D) |
| |
Equiescent
zone- class F |
1.2932E-05 |
Wind Speed at emission source, Vwind-E (m/s) |
1.1072E-02 |
calculated (for stability class
E) |
| |
|
|
Wind Speed at emission source, Vwind-F (m/s) |
4.3420E-03 |
calculated (for stability class
F) |
| |
|
|
Friction velocity, UA* (m/s) |
3.3313E-01 |
calculated, (for stability class
A) |
| |
|
|
Friction velocity, UB* (m/s) |
5.5312E-01 |
calculated, (for stability class
B) |
| |
|
|
Friction velocity, UC* (m/s) |
6.4713E-01 |
calculated, (for stability class
C) |
| |
|
|
Friction velocity, UD* (m/s) |
7.8732E-01 |
calculated, (for stability class
D) |
| |
|
|
Friction velocity, UE* (m/s) |
4.5180E-01 |
calculated, (for stability class
E) |
| |
|
|
Friction velocity, UF* (m/s) |
1.6472E-01 |
calculated, (for stability class
F) |
| |
|
|
Mean Obukov length, LA (m) |
-1.8357E+01 |
calculated, (for stability class
A) |
| |
|
|
Mean Obukov length, LB (m) |
-5.7207E+01 |
calculated, (for stability class
B) |
| |
|
|
Mean Obukov length, LC (m) |
-5.0458E+02 |
calculated, (for stability class
C) |
| |
|
|
Mean Obukov length, LD (m) |
1.0000E+08 |
calculated, (for stability class
D) |
| |
|
|
Mean Obukov length, LE (m) |
5.0458E+02 |
calculated, (for stability class
E) |
| |
|
|
Mean Obukov length, LF (m) |
5.7207E+01 |
calculated, (for stability class
F) |
| |
|
|
Karman constant, k |
0.41 |
|
| |
|
|
Z1 , (m) |
1.01 |
|
| |
|
|
Z0, (m) |
1 |
|
| |
|
|
|
|
|
| Stage I/II - Sludge |
Unmitigated |
1.6867E+00 |
Odour Emission Rate (OU/s) |
E = DF x A x (V/3600)
x Cf |
|
| Digestion Tank Outlet
Chamber |
OU/s/m2 |
|
|
|
|
| (DI201) |
|
|
Dilution factor, DF (OU/m3) |
2335 |
calculated, DF = 1.6 x (T/10)4.9 x (ORP + 200)-0.59 |
| |
|
|
Temperature of sewage, T (F) |
86 |
assumed |
| |
|
|
Oxidation-reduction potential of
sewage, ORP (mV) |
50 |
assumed |
| |
|
|
Air volume of the emission
source, A (m3) |
5 |
assumed (1*Surface Area) |
| |
|
|
Surface Area (m2) |
5 |
estimated base exposed area of
facilities |
| |
|
|
Ventilation rate, V (air changes
per hour) |
5 |
assumed 5 air changes per hour
for opened area |
| |
|
|
Correction
factor, Cf |
0.52 |
for 5 air changes per hour |
| |
|
|
|
|
|
| Deodourizing unit 2 |
Mitigated |
8.6024E-02 |
Surface Area (m2) |
5 |
Surface Area of Sludge Digestor Tank Chamber |
| (Stage I/II - Sludge |
OU/s |
|
Total Air flow rate of the
emission source (m3/s) |
0.04 |
from DSD |
| Digestion Tank Outlet
Chamber) |
|
|
Emission Height, (m) |
7.0 |
above ground |
| (DI2) |
|
|
Diameter of the stack, (m) |
0.3 |
|
| |
|
|
Stack velocity, (m/s) |
0.50 |
calculated |
| |
|
|
Mitigation % |
99 |
|
| |
|
|
|
|
|
| Stage I/II - Sludge
Gravity |
Unmitigated |
1.6867E+00 |
Odour Emission Rate (OU/s) |
E = DF x A x (V/3600)
x Cf |
|
| Thickeners
|
OU/s/m2 |
|
|
|
|
| (TH201) |
|
|
Dilution factor, DF (OU/m3) |
2335 |
calculated, DF = 1.6 x (T/10)4.9 x (ORP + 200)-0.59 |
| |
|
|
Temperature of sewage, T (F) |
86 |
assumed |
| (4 nos. operated) |
|
|
Oxidation-reduction potential of
sewage, ORP (mV) |
50 |
assumed |
| |
|
|
Air volume of the emission
source, A (m3) |
380 |
assumed (1*Surface Area) |
| |
|
|
Surface Area (m2) |
380 |
estimated base exposed area of
facilities (4 tanks) |
| |
|
|
Ventilation rate, V (air changes
per hour) |
5 |
assumed 5 air changes per hour
for opened area |
| |
|
|
Correction
factor, Cf |
0.52 |
for 5 air changes per hour |
| |
|
|
|
|
|
| Deodourizing unit 3 |
Mitigated |
6.4119E+00 |
Surface Area (m2) |
380 |
Surface Area of Sludge Gravity
Thickeners(4 Tanks) |
| (Stage I/II - Sludge
Gravity |
OU/s |
|
Total Air flow rate of the
emission source (m3/s) |
0.21 |
from DSD |
| Thickeners) |
|
|
Emission Height, (m) |
3.0 |
above ground |
| (TH2) |
|
|
Diameter of the stack, (m) |
0.3 |
|
| |
|
|
Stack velocity, (m/s) |
2.99 |
calculated |
| |
|
|
Mitigation % |
99 |
|
| |
|
|
|
|
|
| Stage I/II - Sludge |
Unmitigated |
1.6867E+00 |
Odour Emission Rate (OU/s) |
E = DF x A x (V/3600)
x Cf |
|
| Consolidation Tanks) |
OU/s/m2 |
|
|
|
|
| (SOL201-SOL202) |
|
|
Dilution factor, DF (OU/m3) |
2335 |
calculated, DF = 1.6 x (T/10)4.9 x (ORP + 200)-0.59 |
| |
|
|
Temperature of sewage, T (F) |
86 |
assumed |
| (2 nos. operated) |
|
|
Oxidation-reduction potential of
sewage, ORP (mV) |
50 |
assumed |
| |
|
|
Air volume of the emission
source, A (m3) |
628 |
assumed (1*Surface Area) |
| |
|
|
Surface Area (m2) |
628 |
estimated base exposed area of
facilities (2 tanks) |
| |
|
|
Ventilation rate, V (air changes
per hour) |
5 |
assumed 5 air changes per hour
for opened area |
| |
|
|
Correction
factor, Cf |
0.52 |
for 5 air changes per hour |
| |
|
|
|
|
|
| Deodourizing unit 4 |
Mitigated |
1.0598E+01 |
Surface Area (m2) |
628 |
Surface Area of Sludge
Consolidation Tanks (2 tanks) |
| (Stage I/II - Sludge
Consolidation |
OU/s |
|
Total Air flow rate of the
emission source (m3/s) |
0.17 |
from DSD |
| Tanks) |
|
|
Emission Height, (m) |
3.0 |
above ground |
| (SOL2) |
|
|
Diameter of the stack, (m) |
0.3 |
|
| |
|
|
Stack velocity, (m/s) |
2.47 |
calculated |
| |
|
|
Mitigation % |
99 |
|
| |
|
|
|
|
|
| Stage I/II - Screening Unit |
Unmitigated |
1.6867E+00 |
Odour Emission Rate (OU/s) |
E = DF x A x (V/3600)
x Cf |
|
| (next to Dewatering
House) |
OU/s/m2 |
|
|
|
|
| (DEW202) |
|
|
Dilution factor, DF (OU/m3) |
2335 |
calculated, DF = 1.6 x (T/10)4.9 x (ORP + 200)-0.59 |
| |
|
|
Temperature of sewage, T (F) |
86 |
assumed |
| |
Mitigated |
0.0000E+00 |
Oxidation-reduction potential of
sewage, ORP (mV) |
50 |
assumed |
| |
OU/s/m2 |
(Covered) |
Air volume of the emission
source, A (m3) |
9 |
assumed (1*Surface Area) |
| |
|
|
Surface Area (m2) |
9 |
estimated base exposed area of
facilities |
| |
|
|
Ventilation rate, V (air changes
per hour) |
5 |
assumed 5 air changes per hour
for opened area |
| |
|
|
Correction
factor, Cf |
0.52 |
for 5 air changes per hour |
| |
|
|
|
|
|
| Stage V - Extension of |
Unmitigated |
1.6867E+00 |
Odour Emission Rate (OU/s) |
E = DF x A x (V/3600)
x Cf |
|
| Sludge Dewatering House |
OU/s/m2 |
|
|
|
|
| (DEW203) |
|
|
Dilution factor, DF (OU/m3) |
2335 |
calculated, DF =
1.6 x (T/10)4.9 x (ORP + 200)-0.59 |
| |
|
|
Temperature of sewage, T (F) |
86 |
assumed |
| |
Mitigated |
0.0000E+00 |
Oxidation-reduction potential of
sewage, ORP (mV) |
50 |
assumed |
| |
OU/s/m2 |
|
Air volume of the emission
source, A (m3) |
27 |
assumed (1*Surface Area) |
| |
|
|
Surface Area (m2) |
27 |
estimated base on physical
dimension of facilities |
| |
|
|
Ventilation rate, V (air changes
per hour) |
5 |
assumed 5 air changes per hour
for opened area |
| |
|
|
Correction
factor, Cf |
0.52 |
for 5 air changes per hour |
| |
|
|
|
|
|
| Stage I/II - Sludge
Pumping |
Unmitigated |
1.6867E+00 |
Odour Emission Rate (OU/s) |
E = DF x A x (V/3600)
x Cf |
|
| Station (Wet Well) |
OU/s/m2 |
|
|
|
|
| (PUMP2) |
|
|
Dilution factor, DF (OU/m3) |
2335 |
calculated, DF = 1.6 x (T/10)4.9 x (ORP + 200)-0.59 |
| |
|
|
Temperature of sewage, T (F) |
86 |
assumed |
| |
Mitigated |
0.0000E+00 |
Oxidation-reduction potential of
sewage, ORP (mV) |
50 |
assumed |
| |
OU/s/m2 |
(Covered) |
Air volume of the emission
source, A (m3) |
14 |
assumed (1*Surface Area) |
| |
|
|
Surface Area (m2) |
14 |
estimated base exposed area of
facilities |
| |
|
|
Ventilation rate, V (air changes
per hour) |
5 |
assumed 5 air changes per hour
for opened area |
| |
|
|
Correction
factor, Cf |
0.52 |
for 5 air changes per hour |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|