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A Study on the On-line Measurement of Biochemical Oxygen Demand of livestock Wastewater  

Kim, Hyoung-Mo (Department of Chemical and Biochemical Engineering, The University of Suwon)
Kim, Jin-Kyong (Department of Chemical and Biochemical Engineering, The University of Suwon)
Shin, Kwan-Suk (Department of Chemical and Biochemical Engineering, The University of Suwon)
Kim, Jun-Hyung (Department of Chemical and Biochemical Engineering, The University of Suwon)
Jung, Jae-Chil (Department of Chemical and Biochemical Engineering, The University of Suwon)
Kim, Tai-Jin (Department of Chemical and Biochemical Engineering, The University of Suwon)
Publication Information
KSBB Journal / v.23, no.4, 2008 , pp. 317-322 More about this Journal
Abstract
The Biochemical Oxygen Demand(BOD) is one of important parameters for the most widely used method of organic pollution in wastewater and wastewater treatment effluent. As the conventional BOD test needs 5-day long incubation period, it is thus incompatible with real time control of wastewater treatment plant. To resolve this problem, in the present study an on-line Dissolved Oxygen(DO) monitoring system was used to observe the transient change of dissolved oxygen concentration in livestock wastewater. The system was composed of BOD sensor, amplifier and computer. It was observed that the concentration of the microorganism in the livestock wastewater was relatively constant during the growth period of initial one hour, which allowed the assumption of the constant Oxygen Uptake Rate(OUR) within one hour of measurement. It was thus concluded that the present scheme provided a protocol for automatic measurement of BOD in livestock wastewater, which can be applicable to optimal control of livestock wastewater treatment plant.
Keywords
Biochemical Oxygen Demand; Oxygen Uptake Rate; Automatic Measurement; Dissolved Oxygen Sensor; Livestock Wastewater;
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