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Table 2 COD to N ratios in influent and effluent of SMBR (phenol as carbon source)

From: Wastewaters treatment containing phenol and ammonium using aerobic submerged membrane bioreactor

Influent Consumed
COD:N ratio COD (mg L−1) Phenol (mg L−1) NH4 (mg L−1) NH4 (mg L−1) COD/NH4 ratio
20 250 100 15 12 20.8
20 450 200 22.5 19.5 23.1
20 700 300 35 28 25
20 950 400 47 37 25.7
20 1190 500 59 43 27.7
20 2380 1000 118 46 51.7
50 2380 1000 48 45 52.9