Anaerobic treatment of low-strength wastewater with a high fraction of particulate matter in an unconventional two-phase ASBRs system

Donoso-Bravo, A; Ruiz-Filippi, G; Chamy, R

Abstract

The results of a two-phase anaerobic system using anaerobic sequencing batch reactors (ASBRs), treating low-strength wastewater (COD ~ 500 mg/L) with a high fraction of particulate organic matter (70%, COD basis), are presented. Two reactors in series were used; the first one was hydrolytic-acidogenic, while the second one was methanogenic. This configuration was proposed to promote high efficiency solids removal. During the experiment, 69% and 50% efficiencies of total COD removal were obtained for OLRs of 0.63 and 1.22 kgCOD/(m3 d), respectively. Values of the solubilized organic fraction (SOF) achieved in the hydrolytic-acidogenic reactor were within the range of 0.3-0.6 gCODsolubilized/gpCODremoved, and the average acidified organic fraction (AOF) was 0.6 gCODVFA-produced/gsCODfed. The methanogenic reactor had a VFA removal fraction (VFARF) between 0.4 and 0.6 gCODVFA-removed/gCODVFA-fed for the OLR of 0.63 and 1.22. The two-phase ASBR system is suitable, and can be implemented, for the anaerobic treatment of this kind of wastewater. © 2008 Elsevier B.V. All rights reserved.

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Título según WOS: Anaerobic treatment of low-strength wastewater with a high fraction of particulate matter in an unconventional two-phase ASBRs system
Título según SCOPUS: Anaerobic treatment of low-strength wastewater with a high fraction of particulate matter in an unconventional two-phase ASBRs system
Título de la Revista: BIOCHEMICAL ENGINEERING JOURNAL
Volumen: 43
Número: 3
Editorial: ELSEVIER SCIENCE BV
Fecha de publicación: 2009
Página de inicio: 297
Página final: 302
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S1369703X08003471
DOI:

10.1016/j.bej.2008.10.011

Notas: ISI, SCOPUS