The study of an industrial unit of biotrickling filter for the treatment of the exhaust gases of a flexographic facility was investigated over a 2-year period with the objective to meet the volatile organic compound (VOC) regulatory emission limits. Increasing the water flow rate from 2 to 40 m3 h−1 improved the performance of the process, meeting the VOC regulation when 40 m3 h−1 were used. An empty bed residence time (EBRT) of 36 s was used when the inlet air temperature was 18.7 °C, and an EBRT as low as 26 s was set when the inlet temperature was 26.8 °C. During this long-term operation, the pressure drop over the column of the bioreactor was completely controlled avoiding clogging problems and the system could perfectly handle the non-working periods without VOC emission, demonstrating its robustness and feasibility to treat the emission of the flexographic sector.
Control of VOC emissions from a flexographic printing facility using an industrial biotrickling filter
F. Sempere, V. Martínez-Soria, J. M. Penya-roja, A. Waalkens, C. Gabaldón; Control of VOC emissions from a flexographic printing facility using an industrial biotrickling filter. Water Sci Technol 1 January 2012; 65 (1): 177–182. doi: https://doi.org/10.2166/wst.2011.839
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