Study on the Treatment of Nitrogen Oxides by Compound Bio-Filter

Zhi Fei Liu; De Hong Pang

doi:10.4028/www.scientific.net/AMR.610-613.1824

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 610-613Study on the Treatment of Nitrogen Oxides by...

Study on the Treatment of Nitrogen Oxides by Compound Bio-Filter

Abstract:

Activated carbon and wood chips were applied respectively as packing material of bio-trickling filter and bio-filter which composed the compound bio-filter and the effect of different operating parameters on NO_x removal efficiency were studied. The results show that the best operating conditions of the compound bio-filter are: NO inlet concentration 604.5 mg/m³, spray volume 1.2 L/h, gas flow 0.6 m³/h(empty bed residence time 103.7 s).In such cases,NO_x removal efficiency is over 96% and NO_x removal load of the packing material is 29.66 g/(m³•h) . The remove of NO_x is mainly completed by the packing layer of 0~50 cm height both in the bio-trickling filter and in the bio-filter, that is to say ,when the total packing layer height of the compound bio-filter is 100 cm, the purification effect is ideal and economical; The system can return to normal in about 7 hr when the dynamic load changes largely and suddenly, showing that it has strong anti shock load capacity.

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Periodical:

Advanced Materials Research (Volumes 610-613)

Pages:

1824-1828

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.610-613.1824

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Online since:

December 2012

Authors:

Zhi Fei Liu, De Hong Pang

Keywords:

Activated Carbon, Compound Bio-Filter, Nitrogen Oxides, Wood Chips

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