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Table 5

Comparison of Rochester (MN) WWTP A-stage system simulation results with measured data

InfluentEffluent data (average of 10 d data)Effluent modelModel error
TSS [mg/L] 66 94 94  
Filtered COD [mg COD/L] 229.1 67.2 61.3 −9% 
Flocculated filtered COD [mg COD/L] 175 38.1 30.5 −20% 
Colloids [mg COD/L] 54.1 29.7 31.9 6% 
Total Kjeldahl nitrogen, TKN [mg N/L] 42 33.5 35.6 6% 
Ammonia [mg N/L] 30 23.7 27 14% 
Total phosphorus [mg P/L] 2.4 2.9 21% 
Ortho-phosphates [mg P/L] 1.5 0.7 0.8 14% 
InfluentEffluent data (average of 10 d data)Effluent modelModel error
TSS [mg/L] 66 94 94  
Filtered COD [mg COD/L] 229.1 67.2 61.3 −9% 
Flocculated filtered COD [mg COD/L] 175 38.1 30.5 −20% 
Colloids [mg COD/L] 54.1 29.7 31.9 6% 
Total Kjeldahl nitrogen, TKN [mg N/L] 42 33.5 35.6 6% 
Ammonia [mg N/L] 30 23.7 27 14% 
Total phosphorus [mg P/L] 2.4 2.9 21% 
Ortho-phosphates [mg P/L] 1.5 0.7 0.8 14% 
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