TY - JOUR
T1 - Anaerobic treatment of low-strength wastewater with a high fraction of particulate matter in an unconventional two-phase ASBRs system
AU - Donoso-Bravo, Andres
AU - Ruiz-Filippi, Gonzalo
AU - Chamy, Rolando
N1 - Funding Information:
This work was funded by 1080329 from Fondecyt, Chile.
PY - 2009/3/15
Y1 - 2009/3/15
N2 - 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.
AB - 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.
KW - Acetic acid
KW - Anaerobic processes
KW - Anaerobic sequencing batch reactor
KW - Domestic wastewater
KW - Two-phase system
KW - Wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=58349099235&partnerID=8YFLogxK
U2 - 10.1016/j.bej.2008.10.011
DO - 10.1016/j.bej.2008.10.011
M3 - Article
AN - SCOPUS:58349099235
SN - 1369-703X
VL - 43
SP - 297
EP - 302
JO - Biochemical Engineering Journal
JF - Biochemical Engineering Journal
IS - 3
ER -