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KMID : 0380020060210040241
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Korean Journal of Biotechnology and Bioengineering
2006 Volume.21 No. 4 p.241 ~ p.247
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On-Line Measurement of Biochemical Oxygen Demand of Livestock Wastewater by Multi-Biosensor System
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Kim Jin-Kyeung
Kim Tai-Jin
Yang Chang-Bum
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Abstract
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The present study was intended to examine a basic scheme to determine the biochemical oxygen demand (BOD) of livestock wastewater by means of six individual dissolved oxygen (DO) sensors and its multi-measurable meter. Maximal point of the first order time derivative of the DO difference between DO distribution of sterilized livestock wastewater and that of non-sterilized livestock wastewater, was considered as the oxygen uptake rate (OUR) of microorganisms in livestock wastewater, as determined to be 0.00074 mg O2/ℓ·sec. The present study showed that there was a fair linear relationship (97.72%) between maximal OUR and BOD values of livestock wastewater, the latter being determined by classical Winkler azide method. It was thus concluded that the present multi-biosensor system might be applicable to an on-line system for measurement of BOD of livestock wastewater.
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KEYWORD
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Livestock, wastewater, BOD, OUR, monitoring
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