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Table 2 Physicochemical characteristics of sewage waste water before and after treatment with purified bioflocculant

From: Flocculating performance of a bioflocculant produced by Arthrobacter humicola in sewage waste water treatment

Parameter BT AT
pH 7.73 ± 0.24 7.88 ± 0.56
Turbidity (NTU) 128 ± 1.12 24.0 ± 0.84
SS (mgL-1) 201 ± 1.40 89.0 ± 1.23
Nitrate (mgL-1) 8.40 ± 0.27 2.40 ± 0.72
COD (mgL-1) 1360 ± 1.74 467 ± 1.32
BOD (mgL-1) 49.20 ± 0.18 17.92 ± 0.64
  1. Values are expressed as means ± standard deviation of triplicate determinations
  2. NTU Nephelometric turbidity units
  3. COD Chemical oxygen demand
  4. BOD Biological oxygen demand
  5. SS Suspended solids
  6. BT Before treatment
  7. AT After treatment