Dispersed plug flow model for upflow anaerobic sludge bed reactors with focus on granular sludge dynamicsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:
Kalyuzhnyi S.V.a ,
Fedorovich V.V.a ,
Lens P.b.
Журнал:
Journal of Industrial Microbiology and Biotechnology
Том:
33
Номер:
3
Год издания:
2006
Издательство:
Springer Verlag
Местоположение издательства:
Germany
Первая страница:
221
Последняя страница:
237
DOI:
10.1007/s10295-005-0217-2
Аннотация:
A new approach to model upflow anaerobic sludge bed (UASB)-reactors, referred to as a one-dimensional dispersed plug flow model, was developed. This model focusses on the granular sludge dynamics along the reactor height, based on the balance between dispersion, sedimentation and convection using one-dimensional (with regard to reactor height) equations. A universal description of both the fluid hydrodynamics and granular sludge dynamics was elaborated by applying known physical laws and empirical relations derived from experimental observations. In addition, the developed model includes: (1) multiple-reaction stoichiometry, (2) microbial growth kinetics, (3) equilibrium chemistry in the liquid phase, (4) major solid-liquid-gas interactions, and (5) material balances for dissolved and solid components along the reactor height. The integrated model has been validated with a set of experimental data on the start-up, operation performance, sludge dynamics, and solute intermediate concentration profiles of a UASB reactor treating cheese whey [Yan et al. (1989) Biol Wastes 27:289-305; Yan et al. (1993) Biotechnol Bioeng 41:700-706]. A sensitivity analysis of the model, performed with regard to the seed sludge characteristics and the key model parameters, showed that the output of the dispersed plug flow model was most influenced by the sludge settleability characteristics and the growth properties (especially μm) of both protein-degrading bacteria and acetotrophic methanogens. © Society for Industrial Microbiology 2005.
Добавил в систему:
Калюжный Сергей Владимирович