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KMID : 0380020030180040272
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Korean Journal of Biotechnology and Bioengineering
2003 Volume.18 No. 4 p.272 ~ p.276
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Treatment of Food Processing Wastewater bearing Furfural by Candida utilis
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Park Ki-Young
Jung Jin-Young
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Abstract
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A yeast treatment process was applied to treat food processing organic wastewater containing inhibitory material to anaerobic bacteria. The wastewater contained high concentration of the furfural as a by-product from the food processing. Aerobic yeast (Candida utilis) was selected to remove organics in wastewater. The batch test showed that the wastewater had an inhibition to anaerobic bacteria. The optimum level of temperature for yeast treatment was ranged from 25 to 45. The pH range from 4 to 8 was favorable to yeast growth. The continuous flow reactor was operated at various SRTs. The results were satisfactory with the reduction of COD up to 90％ at SRT of more than 1 day. Through the kinetic study of the yeast, the remained COD concentration was mainly caused by the formation of soluble microbial product (SMP).
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KEYWORD
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Food processing wastewater, aerobic yeast, pH, temperature, soluble microbial product, SMP
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