Investigation of affecting parameters on treating high-strength compost leachate in a hybrid EGSB and fixed-bed reactor followed by electrocoagulation–flotation.

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Investigation of affecting parameters on treating high-strength compost leachate in a hybrid EGSB and fixed-bed reactor followed by electrocoagulation–flotation process  W. Dastyar, T. Amani, Sh. Elyasi  Process Safety and Environmental Protection  Volume 95, Pages 1-11 (May 2015) DOI: 10.1016/j.psep.2015.01.012 Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions

Fig. 1 Schematic representation of the EGSB–FB–ECF set-up: (1) feed reservoir, (2) influent pump, (3) EGSB reactor and sludge, (4) belt heating resistor, (5) temperature probe, (6) temperature controller, (7) EGSB recirculation pump, (8) sample port 1, (9) sample port 2, (10) sample port 3, (11) FB reactor, (12) packed (vesicular basalt), (13) EGSB–FB effluent outlet, (14) gas–solid–liquid separator, (15) biogas collecting vessel, (16) effluent reservoir, (17) ECF reactor, (18) cathode, (19) anode, (20) perforated tube, (21) effluent valve, (22) aeration pump and (23) DC power supply. Process Safety and Environmental Protection 2015 95, 1-11DOI: (10.1016/j.psep.2015.01.012) Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions

Fig. 2 Effects of COD and HRT on (a) COD removal and (b) BPR; COD/N ratio is in the center of its domain (100). Process Safety and Environmental Protection 2015 95, 1-11DOI: (10.1016/j.psep.2015.01.012) Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions

Fig. 3 Linear relationship between OLR/COD and BPR (for 9 runs with COD/N=100). Process Safety and Environmental Protection 2015 95, 1-11DOI: (10.1016/j.psep.2015.01.012) Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions

Fig. 4 Effects of COD and COD/N ratio on (a) COD removal and (b) BPR; HRT is in the center of its domain (58h). Process Safety and Environmental Protection 2015 95, 1-11DOI: (10.1016/j.psep.2015.01.012) Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions

Fig. 5 Effects of HRT and COD/N ratio on (a) COD removal and (b) BPR; COD is in the center of its domain (5575mg/L). Process Safety and Environmental Protection 2015 95, 1-11DOI: (10.1016/j.psep.2015.01.012) Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions

Fig. 6 TSS removal efficiency in regard to COD removal efficiency for some runs. Process Safety and Environmental Protection 2015 95, 1-11DOI: (10.1016/j.psep.2015.01.012) Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions

Fig. 7 Comparison among COD removal efficiency in EGSB–FB and ECF in all runs. Process Safety and Environmental Protection 2015 95, 1-11DOI: (10.1016/j.psep.2015.01.012) Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions

Fig. 8 Comparison among TSS removal efficiency in EGSB–FB and ECF in all runs. Process Safety and Environmental Protection 2015 95, 1-11DOI: (10.1016/j.psep.2015.01.012) Copyright © 2015 The Institution of Chemical Engineers Terms and Conditions