Page 454 - Industrial Wastewater Treatment, Recycling and Reuse

Application of Anaerobic Membrane Bioreactor 425

100
% COD removal
98

96
% COD removal 94

92
90

88

86
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
Days of operation
Figure 10.15 COD removal efficiency as a function of time.

200
Feed TOC
180
Permeate TOC
160

140
TOC (mg/L) 100
120

80

60
40
20
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
Days of operation
Figure 10.16 Evolution of concentrations of TOC in the feed and permeate during the
performance evaluation of the AnMBR.

stable after stabilization of the biological process. The average biogas yield
3
was 0.44 m /kg COD removed.
The generated biogas was analyzed for methane composition on a
periodic basis and found to vary from 69% to 82% with an average