TY - JOUR
T1 - Pilot-plant study on anaerobic treatment of a lipid- and protein-rich food industrial wastewater by a thermophilic multi-staged UASB reactor.
AU - Tagawa, T.
AU - Takahashi, H.
AU - Sekiguchi, Y.
AU - Ohashi, A.
AU - Harada, H.
N1 - Copyright:
This record is sourced from MEDLINE/PubMed, a database of the U.S. National Library of Medicine
PY - 2002
Y1 - 2002
N2 - An on-site pilot-scale experiment was conducted to investigate the performance of a multi-staged UASB (MS-UASB) reactor by feeding with a food processing wastewater containing high strength of lipid and protein. The reactor was operated at a thermophilic condition (55 degrees C) for a period of 600 days. The reactor finally achieved 50 kgCOD.m(-3) d(-1) with a soluble COD removal of 90% (based on the influent total COD versus the effluent filtered COD), while the overall COD removal (based on the effluent COD-total) as considerably unsatisfactory at around only 60-70%. The presence of high strength of lipid and protein along with high concentration of Mg and Ca ions in the raw wastewater caused a severe scum and/or insolubilized substance formation within the UASB sludge bed, resulting in hindering the contact efficiency between substrate and sludge. The replacement of active microbial granules in the sludge bed with the insolubilized protein and lipid brought about deterioration of sludge methanogenic activity.
AB - An on-site pilot-scale experiment was conducted to investigate the performance of a multi-staged UASB (MS-UASB) reactor by feeding with a food processing wastewater containing high strength of lipid and protein. The reactor was operated at a thermophilic condition (55 degrees C) for a period of 600 days. The reactor finally achieved 50 kgCOD.m(-3) d(-1) with a soluble COD removal of 90% (based on the influent total COD versus the effluent filtered COD), while the overall COD removal (based on the effluent COD-total) as considerably unsatisfactory at around only 60-70%. The presence of high strength of lipid and protein along with high concentration of Mg and Ca ions in the raw wastewater caused a severe scum and/or insolubilized substance formation within the UASB sludge bed, resulting in hindering the contact efficiency between substrate and sludge. The replacement of active microbial granules in the sludge bed with the insolubilized protein and lipid brought about deterioration of sludge methanogenic activity.
UR - http://www.scopus.com/inward/record.url?scp=0036048906&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036048906&partnerID=8YFLogxK
U2 - 10.2166/wst.2002.0337
DO - 10.2166/wst.2002.0337
M3 - Article
C2 - 12188549
AN - SCOPUS:0036048906
VL - 45
SP - 225
EP - 230
JO - Water Science and Technology
JF - Water Science and Technology
SN - 0273-1223
IS - 10
ER -