Starting-up of a full-scale two-phase contact process treating citric acid wastewater

A description is given of an anaerobic phased-recycled floc system (contact process) for the treatment of filtration waste waters from the manufacture of citric acid by fermentation of sugarbeet molasses. The performance of the treatment plant during the first 3 years of operation is summarized in t...

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Bibliographic Details
Published in:Water science and technology 1990, Vol.22 (9), p.175-182
Main Authors: Gonenc, I.E, Kerestecioglu
Format: Article
Language:English
Subjects:
Acidification
Acids
Anaerobic processes
anaerobic treatment
Biochemistry
Biomass
Citric acid
Design
Design for recycling
Design parameters
Effluents
Environmental factors
Freshwater
industry
installations
Microbiology
molasses
Reactors
Recycling
Sedimentation & deposition
sugar beet
Wastewater
Wastewater treatment
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Summary:A description is given of an anaerobic phased-recycled floc system (contact process) for the treatment of filtration waste waters from the manufacture of citric acid by fermentation of sugarbeet molasses. The performance of the treatment plant during the first 3 years of operation is summarized in tables and graphs. Unstable operation and low rate of removal of COD were attributed to the activity of acidogenic bacteria. The importance of the solids /liquid separation equipment for controlling loading and biomass concentration was demonstrated. Stable operation could be achieved only after a stable and sufficiently concentrated suspended floc was developed.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.1990.0080