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Table 1 COD and phenol removal efficiency. COD and total phenol loading rates with which the reactors were fed along with removal efficiency (%) of COD and total phenol biodegradation occurred both in the sole reactors and in the whole integrated anaerobic-aerobic system in steady state conditions.

From: Performances and microbial features of an aerobic packed-bed biofilm reactor developed to post-treat an olive mill effluent from an anaerobic GAC reactor

  Experiment duration Influent COD Influent Total phenol concentration D COD Loading rate Total phenol Loading rate Effluent COD Effluent Total phenol concentration COD Removal efficiency (%) Total phenol Removal efficiency (%)
  (day) (gl-1) (gl-1) (day-1) (gl-1day-1) (gl-1day-1) (gl-1) (gl-1)   
GAC-digestor 55 15.28 ± 1.45 0.82 ± 0.13 2.077 31.74 ± 3.01 1.70 ± 0.28 8.35 ± 0.75 0.33 ± 0.04 45 60
SB-aerobic reactor 55 8.17 ± 0.77 0.33 ± 0.04 6.171 50.42 ± 4.78 2.04 ± 0.27 6.24 ± 0.69 0.20 ± 0.03 24 39
Integrated System 55 15.28 ± 1.45 0.82 ± 0.13     6.24 ± 0.69 0.20 ± 0.03 59 76