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Table 3

Wastewater characteristics for the case study plants

ParameterSymbolPlant 1
Plant 2
RawSettledRawSettled
Organics/COD fractions 
 BO (SB)/Total (St) FSbi 0.81 0.84 0.79 0.82 
 BPO (Sbp)/Total (St) FSbpi 0.60 0.49 0.53 0.44 
 BSO (Sbs)/Total (St) FSbsi 0.21 0.35 0.26 0.38 
 VFA (Sa/Total (St) FSai 0.03 0.07 0.03 0.07 
 USO (Sus)/Total (St) FSusi 0.06 0.08 0.08 0.11 
 UPO (Sup)/Total (St) FSupi 0.13 0.08 0.13 0.07 
Nitrogen fractions 
 FSA/TKN Fnai 0.67 0.77 0.65 0.01 
Phosphorus fractions 
 Ortho P/Total P  0.49 0.66 0.57 0.60 
Other fractions 
 TKN/COD  0.09 0.12 0.09 0.71 
 Total P/COD  0.011 0.12 0.12 0.12 
 VSS/TSS  0.93 0.94 0.10  
ParameterSymbolPlant 1
Plant 2
RawSettledRawSettled
Organics/COD fractions 
 BO (SB)/Total (St) FSbi 0.81 0.84 0.79 0.82 
 BPO (Sbp)/Total (St) FSbpi 0.60 0.49 0.53 0.44 
 BSO (Sbs)/Total (St) FSbsi 0.21 0.35 0.26 0.38 
 VFA (Sa/Total (St) FSai 0.03 0.07 0.03 0.07 
 USO (Sus)/Total (St) FSusi 0.06 0.08 0.08 0.11 
 UPO (Sup)/Total (St) FSupi 0.13 0.08 0.13 0.07 
Nitrogen fractions 
 FSA/TKN Fnai 0.67 0.77 0.65 0.01 
Phosphorus fractions 
 Ortho P/Total P  0.49 0.66 0.57 0.60 
Other fractions 
 TKN/COD  0.09 0.12 0.09 0.71 
 Total P/COD  0.011 0.12 0.12 0.12 
 VSS/TSS  0.93 0.94 0.10  
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