Integral of absolute error (IAE) = 4.6606 (mg N/l)*d Integral of square error (ISE) = 6.5212 (mg N/l)^2*d
Maximum absolute deviation from nitrate setpoint = 2.8716 mg N/l Standard deviation of error = 0.84132 mg N/l
Variance of error = 0.70782 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(Qa) = 56779.8357 m^3/d Standard deviation of manipulated variable (Qa) = 4274.9344 m^3/d
Variance of manipulated variable (Qa) = 18275064.4614 (m^3/d)^2
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Effluent average flow rate = 23902.0892 m3/d
Effluent average SI conc = 22.8584 mg COD/l Effluent average SS conc = 0.94089 mg COD/l Effluent average XI conc = 5.7446 mg COD/l Effluent average XS conc = 0.30467 mg COD/l Effluent average XBH conc = 14.3662 mg COD/l Effluent average XBA conc = 0.66875 mg COD/l Effluent average XP conc = 2.8371 mg COD/l Effluent average SO conc = 3.8841 mg (-COD)/l Effluent average SNO conc = 6.2558 mg N/l
Effluent average SNH conc = 1.8199 mg N/l (limit = 4 mg N/l) Effluent average SND conc = 0.7406 mg N/l
Effluent average XND conc = 0.021486 mg N/l Effluent average SALK conc = 4.9654 mol HCO3/m3
Effluent average TSS conc = 17.9409 mg/l (limit = 30 mg COD/l) Effluent average Kjeldahl N conc = 4.2996 mg N/l
Effluent average total N conc = 10.5554 mg N/l (limit = 18 mg COD/l) Effluent average total COD conc = 47.7205 mg COD/l (limit = 100 mg COD/l) Effluent average BOD5 conc = 3.7694 mg/l (limit = 10 mg/l)
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Effluent average SI load = 546.3626 kg COD/day Effluent average SS load = 22.4892 kg COD/day Effluent average XI load = 137.307 kg COD/day Effluent average XS load = 7.2823 kg COD/day Effluent average XBH load = 343.3811 kg COD/day Effluent average XBA load = 15.9844 kg COD/day Effluent average XP load = 67.812 kg COD/day Effluent average SO load = 92.8378 kg (-COD)/day Effluent average SNO load = 149.526 kg N/day Effluent average SNH load = 43.4985 kg N/day Effluent average SND load = 17.702 kg N/day Effluent average XND load = 0.51357 kg N/day
Effluent average SALK load = 118.6833 kmol HCO3/day Effluent average TSS load = 428.8252 kg/day
Effluent average Kjeldahl N load = 102.7704 kg N/d Effluent average total N load = 252.2965 kg N/d Effluent average total COD load = 1140.6186 kg COD/d Effluent average BOD5 load = 90.0969 kg/d
8 10 12 14 9
10 11 12 13 14 15 16 17 18
time (days)
(mg N/l)
Effluent total nitrogen and limit value
8 10 12 14
40 50 60 70 80 90 100
time (days)
(mg COD/l)
Effluent total COD and limit value
8 10 12 14
1 2 3 4 5 6 7
time (days)
(mg N/l)
Effluent total ammonia and limit value
8 10 12 14
14 16 18 20 22 24 26 28 30
time (days)
(mg/l)
Effluent suspended solids and limit value
8 10 12 14
3 4 5 6 7 8 9 10
time (days)
(mg/l)
Effluent BOD5 and limit value
8 10 12
2400 2500 2600 2700 2800 2900
time (days)
(kg/d)
Instantaneous sludge wastage rate
8 10 12
2000 4000 6000 8000 10000 12000 14000 16000 18000
time (days)
(g/d)
Instantaneous Effluent Quality index
8 10 12
1500 2000 2500 3000 3500 4000
time (days)
(kWh/d)
Instantaneous pumping energy
8 10 12
0.5 1 1.5 2
x 104
time (days)
(kWh/d)
Instantaneous aeration energy
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Effluent concentrations and corresponding effluent constraints, sludge wastage rate, effluent quality index and energy consumption during the second week when the influent file raininfluent is simulated.2WKHUHIIOXHQWTXDOLW\YDULDEOHV
Effluent Quality (E.Q.) index = 7224.3921 g/d
To compare: Influent Quality (I.Q.) index = 37649.0558 g/d, BOD5factor=0.25 To compare: Influent Quality (I.Q.) index = 42042.8148 g/d, BOD5factor=0.65 Sludge production for disposal = 17561.9897 kg
Average sludge production for disposal per day = 2508.8557 kg/d Sludge production released into effluent = 3001.7762 kg
Average sludge production released into effluent per day = 428.8252 kg/d Total sludge production = 20563.766 kg
Total average sludge production per day = 2937.6809 kg/d
Aeration energy = 13115.224 kWh/d
Average pumping energy (for Qintr, Qr and Qw) = 3589.6786 kWh/d The maximum effluent ammonia nitrogen level (4 mg N/l) was violated during 0.60417 days, i.e. 8.631% of the operating time.
The limit was violated at 4 different occasions.
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Integral of absolute error (IAE) = 1.797 (mg N/l)*d Integral of square error (ISE) = 0.75853 (mg N/l)^2*d
Maximum absolute deviation from nitrate setpoint = 0.94032 mg N/l Standard deviation of error = 0.3291 mg N/l
Variance of error = 0.1083 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(Ext. carbon) = 2400000 gCOD/d Standard deviation of manipulated variable (Ext. carbon) = 111928.0123 gCOD/d
Variance of manipulated variable (Ext. carbon) = 12527879929.9677 (gCOD/d)^2
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Integral of absolute error (IAE) = 0.64947 (mg (-COD)/l)*d Integral of square error (ISE) = 0.12611 (mg (-COD)/l)^2*d
Maximum absolute deviation from oxygen setpoint = 0.56332 mg (-COD)/l Standard deviation of error = 0.1342 mg (-COD)/l
Variance of error = 0.018009 (mg (-COD)/l)^2
Maximum absolute variation of manipulated variable (max-min)(KLa) = 415.3703 1/d Standard deviation of manipulated variable (KLa) = 9.1487 1/d
Variance of manipulated variable (KLa) = 83.6989 (1/d)^2
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Integral of absolute error (IAE) = 7.6972 (mg N/l)*d Integral of square error (ISE) = 21.7559 (mg N/l)^2*d
Maximum absolute deviation from oxygen setpoint = 7.0238 mg N/l Standard deviation of error = 1.7239 mg N/l
Variance of error = 2.9719 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(SOref) = 4.0968 mg (-COD)/l Standard deviation of manipulated variable (SOref) = 0.063382 mg (-COD)/l
Variance of manipulated variable (SOref) = 0.0040173 (mg (-COD)/l)^2
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Integral of absolute error (IAE) = 3.6353 (mg N/l)*d Integral of square error (ISE) = 4.3344 (mg N/l)^2*d
Maximum absolute deviation from nitrate setpoint = 2.764 mg N/l Standard deviation of error = 0.72916 mg N/l
Variance of error = 0.53168 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(Qa) = 80034.886 m^3/d Standard deviation of manipulated variable (Qa) = 4667.696 m^3/d
Variance of manipulated variable (Qa) = 21787386.3098 (m^3/d)^2
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Effluent average flow rate = 20741.3358 m3/d
Effluent average SI conc = 26.3258 mg COD/l Effluent average SS conc = 0.93683 mg COD/l Effluent average XI conc = 5.9091 mg COD/l Effluent average XS conc = 0.30408 mg COD/l Effluent average XBH conc = 13.9734 mg COD/l Effluent average XBA conc = 0.63544 mg COD/l Effluent average XP conc = 2.7497 mg COD/l Effluent average SO conc = 3.6589 mg (-COD)/l Effluent average SNO conc = 6.3985 mg N/l
Effluent average SNH conc = 1.5374 mg N/l (limit = 4 mg N/l) Effluent average SND conc = 0.74118 mg N/l
Effluent average XND conc = 0.021827 mg N/l Effluent average SALK conc = 4.6749 mol HCO3/m3
Effluent average TSS conc = 17.6788 mg/l (limit = 30 mg COD/l) Effluent average Kjeldahl N conc = 3.9886 mg N/l
Effluent average total N conc = 10.3871 mg N/l (limit = 18 mg COD/l) Effluent average total COD conc = 50.8343 mg COD/l (limit = 100 mg COD/l) Effluent average BOD5 conc = 3.6703 mg/l (limit = 10 mg/l)
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Effluent average SI load = 546.0317 kg COD/day Effluent average SS load = 19.4311 kg COD/day Effluent average XI load = 122.5628 kg COD/day Effluent average XS load = 6.307 kg COD/day Effluent average XBH load = 289.8267 kg COD/day Effluent average XBA load = 13.1798 kg COD/day Effluent average XP load = 57.0326 kg COD/day Effluent average SO load = 75.8908 kg (-COD)/day Effluent average SNO load = 132.7133 kg N/day Effluent average SNH load = 31.8869 kg N/day Effluent average SND load = 15.373 kg N/day Effluent average XND load = 0.45273 kg N/day
Effluent average SALK load = 96.9642 kmol HCO3/day Effluent average TSS load = 366.6818 kg/day
Effluent average Kjeldahl N load = 82.7289 kg N/d Effluent average total N load = 215.4423 kg N/d Effluent average total COD load = 1054.3718 kg COD/d Effluent average BOD5 load = 76.126 kg/d
8 10 12 14 9
10 11 12 13 14 15 16 17 18
time (days)
(mg N/l)
Effluent total nitrogen and limit value
8 10 12 14
40 50 60 70 80 90 100
time (days)
(mg COD/l)
Effluent total COD and limit value
8 10 12 14
1 2 3 4 5 6
time (days)
(mg N/l)
Effluent total ammonia and limit value
8 10 12 14
15 20 25 30 35
time (days)
(mg/l)
Effluent suspended solids and limit value
8 10 12 14
3 4 5 6 7 8 9 10
time (days)
(mg/l)
Effluent BOD5 and limit value
8 10 12
2400 2500 2600 2700 2800 2900 3000
time (days)
(kg/d)
Instantaneous sludge wastage rate
8 10 12
0.5 1 1.5 2 2.5
x 104
time (days)
(g/d)
Instantaneous Effluent Quality index
8 10 12
1000 1500 2000 2500 3000 3500 4000
time (days)
(kWh/d)
Instantaneous pumping energy
8 10 12
0.5 1 1.5 2
x 104
time (days)
(kWh/d)
Instantaneous aeration energy
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Effluent concentrations and corresponding effluent constraints, sludge wastage rate, effluent quality index and energy consumption during the second week when the influent file storminfluent is simulated.2WKHUHIIOXHQWTXDOLW\YDULDEOHV
Effluent Quality (E.Q.) index = 6248.8329 g/d
To compare: Influent Quality (I.Q.) index = 39201.2759 g/d, BOD5factor=0.25 To compare: Influent Quality (I.Q.) index = 43758.1148 g/d, BOD5factor=0.65 Sludge production for disposal = 19751.4413 kg
Average sludge production for disposal per day = 2821.6345 kg/d Sludge production released into effluent = 2566.7723 kg
Average sludge production released into effluent per day = 366.6818 kg/d Total sludge production = 22318.2136 kg
Total average sludge production per day = 3188.3162 kg/d
Aeration energy = 13210.8008 kWh/d
Average pumping energy (for Qintr, Qr and Qw) = 3676.2424 kWh/d The maximum effluent ammonia nitrogen level (4 mg N/l) was violated during 0.69792 days, i.e. 9.9702% of the operating time.
The limit was violated at 6 different occasions.
The maximum effluent total suspended solids level (30 mg/l) was violated during 0.22917 days, i.e. 3.2738% of the operating time.
The limit was violated at 2 different occasions.
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Integral of absolute error (IAE) = 1.9321 (mg N/l)*d Integral of square error (ISE) = 0.91191 (mg N/l)^2*d
Maximum absolute deviation from nitrate setpoint = 1.1064 mg N/l Standard deviation of error = 0.36083 mg N/l
Variance of error = 0.1302 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(Ext. carbon) = 2400000 gCOD/d Standard deviation of manipulated variable (Ext. carbon) = 129403.1625 gCOD/d
Variance of manipulated variable (Ext. carbon) = 16745178471.8128 (gCOD/d)^2
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Integral of absolute error (IAE) = 0.73796 (mg (-COD)/l)*d Integral of square error (ISE) = 0.15525 (mg (-COD)/l)^2*d
Maximum absolute deviation from oxygen setpoint = 0.60071 mg (-COD)/l Standard deviation of error = 0.14879 mg (-COD)/l
Variance of error = 0.022138 (mg (-COD)/l)^2
Maximum absolute variation of manipulated variable (max-min)(KLa) = 415.4094 1/d Standard deviation of manipulated variable (KLa) = 9.9133 1/d
Variance of manipulated variable (KLa) = 98.2741 (1/d)^2
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Integral of absolute error (IAE) = 7.2054 (mg N/l)*d Integral of square error (ISE) = 19.1566 (mg N/l)^2*d
Maximum absolute deviation from oxygen setpoint = 6.9148 mg N/l Standard deviation of error = 1.6346 mg N/l
Variance of error = 2.6721 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(SOref) = 4.0968 mg (-COD)/l Standard deviation of manipulated variable (SOref) = 0.063576 mg (-COD)/l
Variance of manipulated variable (SOref) = 0.0040419 (mg (-COD)/l)^2
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Integral of absolute error (IAE) = 4.9185 (mg N/l)*d Integral of square error (ISE) = 6.769 (mg N/l)^2*d
Maximum absolute deviation from nitrate setpoint = 2.764 mg N/l Standard deviation of error = 0.87219 mg N/l
Variance of error = 0.76072 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(Qa) = 92230 m^3/d Standard deviation of manipulated variable (Qa) = 4503.5407 m^3/d
Variance of manipulated variable (Qa) = 20281878.6859 (m^3/d)^2
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Plant and controller performance during the second week for all three weather files, when the external carbon controller, the supervisory DO controller, the internal recycling controller and the excess sludge controller are implemented. At the end of the section plots from simulations with a constant sludge wastage rate are found. Plots with total suspended solids concentration from the three weather files can also be found at the end of this section.
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Effluent average flow rate = 18218.7601 m3/d Effluent average SI conc = 30 mg COD/l Effluent average SS conc = 0.87011 mg COD/l Effluent average XI conc = 4.5751 mg COD/l Effluent average XS conc = 0.23055 mg COD/l Effluent average XBH conc = 12.0703 mg COD/l Effluent average XBA conc = 0.54408 mg COD/l Effluent average XP conc = 2.2925 mg COD/l Effluent average SO conc = 3.7113 mg (-COD)/l Effluent average SNO conc = 6.3081 mg N/l
Effluent average SNH conc = 1.4279 mg N/l (limit = 4 mg N/l) Effluent average SND conc = 0.69613 mg N/l
Effluent average XND conc = 0.016586 mg N/l Effluent average SALK conc = 4.3978 mol HCO3/m3
Effluent average TSS conc = 14.7845 mg/l (limit = 30 mg COD/l) Effluent average Kjeldahl N conc = 3.5618 mg N/l
Effluent average total N conc = 9.8699 mg N/l (limit = 18 mg COD/l)
Effluent average total COD conc = 50.5828 mg COD/l (limit = 100 mg COD/l) Effluent average BOD5 conc = 3.1765 mg/l (limit = 10 mg/l)
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Effluent average SI load = 546.5628 kg COD/day Effluent average SS load = 15.8524 kg COD/day Effluent average XI load = 83.3533 kg COD/day Effluent average XS load = 4.2004 kg COD/day Effluent average XBH load = 219.9067 kg COD/day Effluent average XBA load = 9.9124 kg COD/day Effluent average XP load = 41.7672 kg COD/day Effluent average SO load = 67.6145 kg (-COD)/day Effluent average SNO load = 114.926 kg N/day Effluent average SNH load = 26.0138 kg N/day Effluent average SND load = 12.6826 kg N/day Effluent average XND load = 0.30218 kg N/day
Effluent average SALK load = 80.1227 kmol HCO3/day Effluent average TSS load = 269.355 kg/day
Effluent average Kjeldahl N load = 64.8913 kg N/d Effluent average total N load = 179.8173 kg N/d Effluent average total COD load = 921.5552 kg COD/d Effluent average BOD5 load = 57.8716 kg/d
8 10 12 14 9
10 11 12 13 14 15 16 17 18
time (days)
(mg N/l)
Effluent total nitrogen and limit value
8 10 12 14
50 60 70 80 90 100
time (days)
(mg COD/l)
Effluent total COD and limit value
8 10 12 14
1 2 3 4 5
time (days)
(mg N/l)
Effluent total ammonia and limit value
8 10 12 14
12 14 16 18 20 22 24 26 28 30
time (days)
(mg/l)
Effluent suspended solids and limit value
8 10 12 14
3 4 5 6 7 8 9 10
time (days)
(mg/l)
Effluent BOD5 and limit value
8 10 12
1000 1500 2000 2500 3000 3500 4000 4500
time (days)
(kg/d)
Instantaneous sludge wastage rate
8 10 12
2000 3000 4000 5000 6000 7000 8000 9000 10000
time (days)
(g/d)
Instantaneous Effluent Quality index
8 10 12
2500 3000 3500 4000
time (days)
(kWh/d)
Instantaneous pumping energy
8 10 12
0.7 0.8 0.9 1 1.1 1.2 1.3
x 104
time (days)
(kWh/d)
Instantaneous aeration energy
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Effluent concentrations and corresponding effluent constraints, sludge wastage rate, effluent quality index and energy consumption during the second week when the influent file dryinfluent is simulated.2WKHUHIIOXHQWTXDOLW\YDULDEOHV
Effluent Quality (E.Q.) index = 5172.355 g/d
To compare: Influent Quality (I.Q.) index = 37649.0558 g/d, BOD5factor=0.25 To compare: Influent Quality (I.Q.) index = 42042.8148 g/d, BOD5factor=0.65 Sludge production for disposal = 19510.7821 kg
Average sludge production for disposal per day = 2787.2546 kg/d Sludge production released into effluent = 1885.485 kg
Average sludge production released into effluent per day = 269.355 kg/d Total sludge production = 21396.2671 kg
Total average sludge production per day = 3056.6096 kg/d Aeration energy = 13570.2578 kWh/d
Average pumping energy (for Qintr, Qr and Qw) = 3971.0281 kWh/d The maximum effluent ammonia nitrogen level (4 mg N/l) was violated during 0.5625 days, i.e. 8.0357% of the operating time.
The limit was violated at 5 different occasions.
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Integral of absolute error (IAE) = 1.4191 (mg N/l)*d Integral of square error (ISE) = 0.4741 (mg N/l)^2*d
Maximum absolute deviation from nitrate setpoint = 0.97952 mg N/l Standard deviation of error = 0.25975 mg N/l
Variance of error = 0.067472 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(Ext. carbon) = 2400000 gCOD/d Standard deviation of manipulated variable (Ext. carbon) = 117083.2063 gCOD/d
Variance of manipulated variable (Ext. carbon) = 13708477202.17 (gCOD/d)^2
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Integral of absolute error (IAE) = 0.73571 (mg (-COD)/l)*d Integral of square error (ISE) = 0.15306 (mg (-COD)/l)^2*d
Maximum absolute deviation from oxygen setpoint = 0.58412 mg (-COD)/l Standard deviation of error = 0.14769 mg (-COD)/l
Variance of error = 0.021813 (mg (-COD)/l)^2
Maximum absolute variation of manipulated variable (max-min)(KLa) = 408.1879 1/d Standard deviation of manipulated variable (KLa) = 9.5715 1/d
Variance of manipulated variable (KLa) = 91.6131 (1/d)^2
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Integral of absolute error (IAE) = 6.5904 (mg N/l)*d Integral of square error (ISE) = 16.7078 (mg N/l)^2*d
Maximum absolute deviation from ammonia setpoint = 6.9622 mg N/l Standard deviation of error = 1.5374 mg N/l
Variance of error = 2.3636 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(SOref) = 3.5371 mg (-COD)/l Standard deviation of manipulated variable (SOref) = 0.065276 mg (-COD)/l
Variance of manipulated variable (SOref) = 0.0042609 (mg (-COD)/l)^2
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Integral of absolute error (IAE) = 5.0617 (mg N/l)*d Integral of square error (ISE) = 6.1326 (mg N/l)^2*d
Maximum absolute deviation from nitrate setpoint = 2.3525 mg N/l Standard deviation of error = 0.92347 mg N/l
Variance of error = 0.85279 (mg N/l)^2
Maximum absolute variation of manipulated variable (max-min)(Qa) = 55891.3752 m^3/d Standard deviation of manipulated variable (Qa) = 3528.1304 m^3/d
Variance of manipulated variable (Qa) = 12447703.9518 (m^3/d)^2