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Table 2 Performance of up-flow anaerobic fixed film fixed bed reactor (UAnFFFBR) in removing DEP

From: A comparative study of anaerobic fixed film baffled reactor and up-flow anaerobic fixed film fixed bed reactor for biological removal of diethyl phthalate from wastewater: a performance, kinetic, biogas, and metabolic pathway study

Study step A B
Study phase 1 2 3 4 5 1 2 3 4
Influent DEP concentration (mg L−1) 300 300 300 300 300 400 500 600 700
HRT (h) 12 18 24 30 36 36 36 36 36
L org (g COD m−2 day−1) 4.162 2.775 2.081 1.665 1.387 1.85 2.312 2.775 3.237
Attached mass [TS (mg) of biofilm] 5840 4370 4110 3880 3720 4340 5440 6080 6840
Attached mass [VS (mg) of biofilm] 4080 2940 2700 2460 2280 2880 3660 4320 4980
VS/TS ratio 0.698 0.672 0.657 0.634 0.613 0.663 0.672 0.71 0.728
Effluent total suspended solids (mg day−1) 326.8 227.3 169.3 129.6 112.2 144.5 181.4 220 270
Effluent volatile suspended solids (mg day−1) 164.4 102.4 74.4 55.7 48 76.8 96 117.6 151.8
DEP concentration in TSSe (mg g−1) 9.7 9.3 8.6 8.1 5.2 7.4 7.5 8.4 9.1
SRT (day) 17.87 19.22 24.27 29.94 33.15 30.03 29.98 27.63 25.33
Methane production (L/g CODrem) 0.22 (0.2) 0.24 (0.22) 0.28 (0.26) 0.34 (0.31) 0.42 (0.38) 0.34 (0.31) 0.32 (0.29) 0.30 (0.27) 0.27 (0.24)
Methane percentage (%) 41.1 42.3 52.8 56.1 61.5 61.0 59.5 59.6 57.3
DEP removal (%) 67.9 72.5 76.46 80.96 87.86 88.15 88.3 88.36 88.72
COD removal (%) 57.91 60.86 71.85 78.79 83.55 84.25 86.02 86.27 86.91
TOC removal (%) 45.32 53.97 62.58 70.05 78.33 78.34 78.25 78.79 79.65
  1. L org organic loading rate, TSS e total solids, VS volatile solids, TSS e effluent concentration of total suspended solids