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KMID : 1156220080340060452
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Journal of Environmental Health Sciences
2008 Volume.34 No. 6 p.452 ~ p.458
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Anaerobic/Aerobic Biological Reaction Characteristics of the Marine Products Industry Wastewater
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Choi Yong-Bum
Kim Gau-You
Kwon Jae-Hyouk
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Abstract
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This study was undertaken to establish lhe biological reaction characteristics of the marine products industry wastewater which contains high concentrations of organic matter and saline. As the S/I is varied from 0.3 to 1.2, the results were follows: the observed ultimate anaerobic biodegradability varied from 72.0 to 88.0%, the first order reaction rate varied from 0.1735 to 0.3420 day-1 and the second order reaction rate varied from 0.0132 to 0.0295 day-1. When S/I was 0.9, the IIrst order reaction rate had a maximum value, but the varialions of the second order reaction rate were less than 1st-order reaction rate. When the operation time exceeded 2 days the gas produclion rapidly increased. The source of this rapid increase was due to that the activity of the granular sludge used in this study being faster than that of conventional sludge. Under aerobic condition, the characteristics of organic matter were as follows: the marine industry wastewater used in this study contained aboul 81 % of biodegradable matter, and it was divided into readily biodegradable COD(Ss), slowly biodegradable COD(Xs), soluble COD(Si) and inert suspended COD (Xi). The percentages of each COD were 87.3%. 23.9%. 6.4% and 12.4% respectively.
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KEYWORD
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ultimate anaerobic/aerobic biodegradability, saline wastewater
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