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Degradation of whey in an anaerobic fixed bed (AnFB) reactor

Handajani, Marisa

Abstract:
An Anaerobic Fixed Bed (AnFB) reactor was run as an upflow anaerobic reactor with an arrangement of supporting material for growth of a biofilm. The supporting material was made from Liapor-clay-polyethylene sinter lamellas (Herding Co., Amberg).
The AnFB reactor was used for treating high concentrations of whey-containing wastewater. Optimal operating conditions for whey treatment at a concentration of COD in the influent of around 50 g whey·l-1 were found for a hydraulic retention time (HRT) in the range of 4-8 days or an organic loading rate (OLR) less than 10 kg COD·m-3·d-1. This is a higher load than normally applied in praxis reactors.
Accumulation of volatile fatty acids (VFAs) happened when the AnFB was supplied with surplus whey solution at a high OLR or when it was oxygenated. VFAs were accumulated faster when the HRT was changed from 12 days to 6 days compared to a change of HRT from 6 days to 4 days. However, at a HRT of 6 days, the accumulated VFAs were completely degraded after an adaptation period of about 5 days, whereas the accumulated VFAs at a HRT of 4 days remained constant upon time and could not be degraded d ... mehr

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Volltext §
DOI: 10.5445/KSP/1592004
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Coverbild
Zugehörige Institution(en) am KIT Institut für Ingenieurbiologie und Biotechnologie des Abwassers (IBA)
Publikationstyp Hochschulschrift
Jahr 2004
Sprache Englisch
Identifikator ISBN: 3-937300-12-0
ISSN: 0172-8709
urn:nbn:de:0072-AAA15920040
KITopen-ID: 1592004
Verlag Universitätsverlag Karlsruhe, Karlsruhe
Umfang XIII, 135 S.
Serie Karlsruher Berichte zur Ingenieurbiologie ; 41
Abschlussart Dissertation
Fakultät Fakultät für Bauingenieur- und Geowissenschaften (Fak. für Bauing.)
Institut Institut für Ingenieurbiologie und Biotechnologie des Abwassers (IBA)
Prüfungsdaten 23.07.2004
Schlagworte methanogenesis , acetogenesis , degradation , whey , anaerobic fixed bed reactor , AnFB reactor
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