The Solid retension time θc (day) = Minimum Sludge retension time (day) = S/F = S min Hydranlic detension time θ (day ) = Volume of the tank (m3) =
5.0056319 0.9163347 day 5.4626679 OK 2.0408163 S>Smin OK 0.0486438 617.77605
Food to micro-organism ratio in the reactor (F/M) = 0.57561312 OK mg BOD5 / mg MLVSS .d Biomass production per day (Px) (Kg/d) = 461.79183 Waste Flow rate Qw (m3/d) = 3
Effluent Flow rate Qe (m /d) = 3
Recycle Flow Qr (m /d) = Oxygen reqirements =
46.179183 7257.1429 5442.8571 270.08559 kg O2/d
dge System BOD removal
Concentration of Biomass(X) =
3000 mg MLVSS/L
1600 4800
Xr =
10000 mg VSS/L
Q0(m3/d)=
12700
S0 (mg/L)=
84
Qe(m3/d)=
7257.143
Xe neigligable Sed tank
Areation tank
Qr(m3/d)= S (mg/L)=
5442.857 11.1
Qw(m3/d)= S (mg/L)= Xr =
46.17918 11.1 10000
Designed By : Ramy R. Salem
Activated Sludge System
Advisor : Dr. Husam Alnajar INPUT DATA Flow = BOD5 (soluble) =
3 12960 m /d 84 mg/L
(BOD5)total = Suspended Solids(SS)= (BOD5)soluble in effluent =
30 mg/L 30 mg/L 11.1 mg/L
Micro-organism (N) Growth Constant -1 0.25 d -1 0.04 d 0.2 mg VSS/mg NH4-N removed 0.4 mg/L
(µm)n = (Kd)n = (Y)n = (Ks)n=
Micro-organism Growth Constant -1
Kd = Y=
2.5 d -1 0.05 d 0.5
Ks=
100 mg BOD5/L
µm =
Concentration of Biomass(X mg VSS/mg BOD5 removed
The Solid retension time θc (day) = Minimum Sludge retension time (day) =
10 0.0761905 day
S/F =
2.1 OK
S min Hydranlic detension time θ (day ) =
0.0761905 S>Smin OK 0.0486438
Volume of the tank (m3) =
2437.1532
Food to micro-organism ratio in the reactor (F/M) = 0.16543892 OK mg BOD5 / mg MLVSS .d
Biomass production per day (Px) (Kg/d) =
408.42013
Waste Flow rate Qw (m3/d) =
110.37077
Effluent Flow rate Qe (m3/d) =
7765.7506
3
Recycle Flow Qr (m /d) = Oxygen reqirements =
5194.2494 2764.896 kg O2/d
udge System BOD Removal & Nitrification
40 mg/L 1 mg/L
TKN0 = TKN =
Concentration of Biomass(X) =
3000 mg MLVSS/L
1600 4800
Xr =
10000 mg MLVSS/L
Q0(m3/d)=
12960
S0 (mg/L)=
84
TKN0(mg/L) =
40
Qe(m3/d)= Xe neigligable
Areation tank
Sed tank
TKN0(mg/L) =
Qr(m3/d)=
5194.249
Qw(m3/d)=
S (mg/L)=
6.382979
S (mg/L)= Xr =
7765.751 0.509091
110.3708 6.382979 10000
Designed By : Ramy R. Salem
Activated Sludge System
Advisor : Dr. Husam Alnajar INPUT DATA Flow = BOD5 (soluble) =
3 12960 m /d 84 mg/L
(BOD5)total = Suspended Solids(SS)= (BOD5)soluble in effluent =
30 mg/L 30 mg/L 11.1 mg/L
Micro-organism (N) Growth Constant -1 0.25 d -1 0.04 d 0.2 mg VSS/mg NH4-N removed 0.4 mg/L
(µm)n = (Kd)n = (Y)n = (Ks)n=
Micro-organism Growth Constant -1
Kd = Y=
2.5 d -1 0.05 d 0.5
Ks=
100 mg BOD5/L
µm =
Concentration of Biomass(X mg VSS/mg BOD5 removed
BOD Removal The Solid retension time θc (day) =
5.0056319
Minimum Sludge retension time (day) =
0.9163347 day
S/F =
5.4626679 OK
S min
2.0408163 S>Smin OK
Hydranlic detension time θ (day ) =
0.0972876
Volume of the tank (m3) =
1260.8469
Food to micro-organism ratio in the reactor (F/M) =
0.57561312 OK
mg BOD5 / mg MLVSS .d Biomass production per day (Px) (Kg/d) = 470.10523 Waste Flow rate Qw (m3/d) = 3
Effluent Flow rate Qe (m /d) = 3
Recycle Flow Qr (m /d) =
47.010523 10739.981 2287.0588
Oxygen reqirements =
2764.896 kg O2/d
NH3 Removal (Nitrification) The Solid retension time θc (day) = Minimum Sludge retension time (day) = Hydranlic detension time θ (day ) = Volume of the tank (m3) =
54.054054 4.7619048 day 0.0888889 1147.8213
Food to micro-organism ratio in the reactor (F/M) = 0 Biomass production per day (Px) (Kg/d) = 31.852041 Waste Flow rate Qw (m3/d) = 3
Effluent Flow rate Qe (m /d) = 3
Recycle Flow Qr (m /d) =
3.1852041 10634.227 2278.7628
Oxygen reqirements (kg O2/d) = 3
Volume of air to be supplied(m /d) =
2301.4821 104643.27
0.3
mg TKN/mg Vss.d
udge System BOD Removal & Nitrification (Seperated processes)
40 mg/L 1 mg/L
TKN0 = TKN =
Concentration of Biomass(X) =
1500 mg MLVSS/L
1600 4800
Xr =
3
10000 mg MLVSS/L
3
Q0(m /d)=
12960
Qe(m /d)=
S0 (mg/L)=
84
Xe neigligable
TKN0(mg/L) =
40
TKN0(mg/L) =
Areation tank 1260.8
10672.94 40
Sed tank
Qr(m3/d)= S (mg/L)=
mg TKN/mg Vss.d
2287.059 11.1
Qw(m3/d)= S (mg/L)=
Qe(m3/d)= 12912.9895
Qe(m3/d)=
Nitrification 1147.82
Sed tank
TKN0(mg/L) =
12909.8 1
47.01052 11.1
Qw(m3/d)=
3.185204
Designed By : Ramy R. Salem
Activated Sludge System
Advisor : Dr. Husam Alnajar INPUT DATA Flow = BOD5 (soluble) =
3 12960 m /d 84 mg/L
(BOD5)total = Suspended Solids(SS)= (BOD5)soluble in effluent =
30 mg/L 30 mg/L 11.1 mg/L
The denitrifying bacteria (µm)d = (Kd) = (Y)d = Kdn=
-1 0.4 d -1 0.04 d 0.9 mg VSS/mg NO3-N 0.16 mg NO3-N
Micro-organism Growth Constant -1
Kd = Y=
2.5 d -1 0.05 d 0.5
Ks=
100 mg BOD5/L
µm =
Concentration of Biomass(X mg VSS/mg BOD5 removed
NH3 Removal (Denitrification) The Solid retension time θc (day) = Minimum Sludge retension time (day) =
5.271538462 2.51025641 day
Hydranlic detension time θ (day ) =
0.050654608
Volume of the tank (m3) =
652.2055178
Biomass production per day (Px) (Kg/d) =
363.6613402
Waste Flow rate Qw (m3/d) =
36.36613402
3
Effluent Flow rate Qe (m /d) =
12839.17567
3
Recycle Flow Qr (m /d) =
5.518089346
NH3 Removal (Nitrification) The Solid retension time θc (day) = Minimum Sludge retension time (day) = Hydranlic detension time θ (day ) = Volume of the tank (m3) =
4.4827586 2.7777778 day 0.0866667 1119.1258
Food to micro-organism ratio in the reactor (F/M) = Biomass production per day (Px) (Kg/d) =
374.47669
Waste Flow rate Qw (m3/d) =
37.447669
3
Effluent Flow rate Qe (m /d) = 3
Recycle Flow Qr (m /d) =
10634.227 2278.7628
Oxygen reqirements (kg O2/d) = 3
Volume of air to be supplied(m /d) =
2242.4698 101960.1
0.3
mg TKN/mg Vss.d
udge System Denitrification
39 mg/L 1 mg/L 3000 mg MLVSS/L
TKN0 = TKN = X
linked nitrification seperet value form this shee Concentration of Biomass(X) =
1500 mg MLVSS/L
1600 4800
Xr =
3
10000 mg MLVSS/L
Q0(m /d)=
12960
S0 (mg/L)=
84
TKN0(mg/L) =
39
3
Qe(m /d)=
10672.94
Xe neigligable TKN0(mg/L) =
Areation
tank(m3)
1260.8
39
Sed tank
Qr(m3/d)= S (mg/L)=
mg TKN/mg Vss.d
2287.059 11.1
Qw(m3/d)= S (mg/L)=
NOTE linked with the process of BOD removal and nitrification seperetly . You can change the value form this sheet.
Qe(m3/d)= 12912.9895
Nitrification(m3) 1119.13
Sed tank
Qe(m3/d)=
12875.54
TKN0(mg/L) =
1
Denitrificatio
47.01052 11.1
Qr(m3/d)= 2.278763
Qw(m3/d)=
37.448
Qe(m3/d)=
Denitrification (m3) 652.2055
Sed tank
12839.18
Qr(m3/d)= 5.518089
Qw(m3/d)= 36.36613
Designed by : Ramy R. Salem
OXIDATION DICHES
Advisor : Dr. Husam Alnajar INPUT DATA Flow = Influent BOD5 (soluble) =
3 20000 m /d 300 mg/L
(BOD5)total = Suspended Solids(SS)= (BOD5)soluble in effluent =
33.9 mg/L 30 mg/L 15 mg/L
Micro-organism Growth Constant -1 2.5 d -1 0.03 d 0.5
µm = Kd = Y=
mg VSS/mg BOD5 removed
30 mg BOD5/L
Ks=
No Sludge Production Allow Sludge Production
The Solid retension time θc (day) = Hydranlic detension time θ (hours ) =
S min
Volume of the tank (m3) = 20000 Concentration of Biomass(X) = 4750 mg MLVSS/L Food to micro-organism ratio in the reactor (F/M) = 0.063 Biomass production per day (Px) (Kg/d) =
0
Waste Flow rate Qw (m3/d) =
0
3
Effluent Flow rate Qe (m /d) = 3
Recycle Flow Qr (m /d) =
1904.7619 18095.238
Oxygen reqirements =
5700 kg O2/d
ATION DICHES BOD removal,Nitrification & denitrification
