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Table 5

Concentrations and removal efficiencies rate of nutriments (nitrogen and phosphorus)

Activated Sludge Effluent
MBR Permeate
HRT (hour)12 h15 h20 h24 h12 h15 h20 h24 h
NO3 Concentration (mg/L) 50 32 24 14.6 20.3 15.6 13.2 12 
Removal efficiency (%) 59 74 80 88 83 87 89 90 
TKN Concentration (mg/L) 1.3 1.1 0.7 0.7 0.6 0.5 0.4 
Removal efficiency (%) 93 94 95 96 96 97 97 98 
PO3−4 Concentration (mg/L) 6.8 2.3 1.5 1.4 1.2 1.18 0.4 
Removal efficiency (%) 28.8 40 79.5 87.1 87.5 89.3 89.5 97 
Activated Sludge Effluent
MBR Permeate
HRT (hour)12 h15 h20 h24 h12 h15 h20 h24 h
NO3 Concentration (mg/L) 50 32 24 14.6 20.3 15.6 13.2 12 
Removal efficiency (%) 59 74 80 88 83 87 89 90 
TKN Concentration (mg/L) 1.3 1.1 0.7 0.7 0.6 0.5 0.4 
Removal efficiency (%) 93 94 95 96 96 97 97 98 
PO3−4 Concentration (mg/L) 6.8 2.3 1.5 1.4 1.2 1.18 0.4 
Removal efficiency (%) 28.8 40 79.5 87.1 87.5 89.3 89.5 97 
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