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Table 5 Results of biological filtration by date kernels

From: Advanced treatment of effluent extended aeration process using biological aerated filter (BAF) with natural media: modification in media, design and backwashing process

Parameter Inlet wastewater to the reactor Average output of the reactor at a height of 25 cm Average output of the reactor at a height of 50 cm Average output of the reactor at a height of 75 cm Average output of the reactor at a height of 100 cm Average output from drain valve reactor Average final removal percentage
PH 8.1 8.1 8.1 8.1 0.5 ± 8.1 1 ± 7
DO (mg/L) 2 0.2 ± 5 0.3 ± 5 0.3 ± 5 0.3 ± 5 0.3 ± 5
\({\text{BOD}}_{5}^{ - }\) (mg/L) 5 ± 100 5 ± 80 5 ± 50 5 ± 20 5 ± 10 0.6 ± 3 98.48
COD (mg/L) 10 ± 198 10 ± 150 7 ± 70 5 ± 30 5 ± 20 3 ± 15 92.42
\({\text{NO}}_{3}^{ - }\) (mg/L) 5 ± 30 2 ± 20 1.5 ± 15 1 ± 8 0.5 ± 3 0.3 ± 0.6 99.4
\({\text{PO}}_{4}^{ - }\) (mg/L) 3 ± 15 2 ± 10 1.5 ± 8 1 ± 4 0.8 ± 2 0.3 ± 1 93.3
Turbidity (NTU) 0.5 ± 10 0.5 ± 9 0.5 ± 8 0.5 ± 7 0.5 ± 6 0.5 95
Color (TCU) 10 ± 105 10 ± 100 10 ± 80 10 ± 75 10 ± 65 10 ± 60 42.8
Sulfate (mg/L) 80 ± 600 80 ± 580 80 ± 480 80 ± 450 60 ± 430 50 ± 420 30
TSS (mg/L) 0.2 ± 90 0.2 ± 40 0.2 ± 22 0.2 ± 15 0.2 ± 9 0.2 ± 1 98.9
ORP (mv)  + 10  + 50  + 85  + 120  + 200  + 214
Amoxicillin (mg/L) 3 ± 10 1 ± 8 20
Azithromycin (mg/L) 0.3 ± 1.5 0.05 ± 1.3 13