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ISSN 2029-7092 online
ISBN 978-609-457-690-4 CD
ISBN 978-609-457-640-9
 Environmental Protection

Aleksandr Mitin, Natalia Nikolaikina, Aleksandr Pushnov

Hydraulic resistance of the packing for biofilters in the viscous flow regime of the gas stream

Conference Information: 9th International Conference on Environmental Engineering, MAY 22-23, 2014 Vilnius, LITHUANIA
Source: ICEE-2014 - International Conference on Environmental Engineering
Book Series: International Conference on Environmental Engineering (ICEE) Selected papers
ISSN: ISSN 2029-7092 online
ISBN: 978-609-457-640-9 / 978-609-457-690-4 CD
Year: 2014
Publisher: Vilnius Gediminas Technical University Press Technika

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In the paper, the hydrodynamics of existing packings for biofilters is considered. The paper discusses the features of the flow regime of the gas stream in the random packings and regular packings at Reynolds numbers (from 15 till 200) that correspond to the viscous flow regime in the processes of biological purification of the gas. Results of research of hydraulic resistance of packings from artificial materials (combinated packing, highly porous packing, polyurethane foam, ceramic raschig rings, recovered carbon, silicagel) and natural materials (lump wood, cone, bark) are given. These packings are widely used in the heat-mass transfer devices. The experiments were carried out on the experimental columns. Diameters of the columns are 100 and 200 mm. Height of the columns is 1000 mm. The results of experiments are generalized using similarity criteria – Reynolds. Obtained regularities enable one to select the most efficient and less energy-consuming modes of operation of the biofilter. The packings of a various geometrical form are compared. In addition, classification the packings for biofilters is given. The most perspective packings for implementation of biological gas purification are offered.

Keywords: biofilter; packing; purification of gas; viscous; inertial flow regime.

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