Journal of Korea Society of Waste Management (한국폐기물자원순환학회지)

Korea Society of Waste Management (한국폐기물자원순환학회)
권호 표지

Effect of Temperature Control on Biodegradation in Aerobic Stabilization Reactor of MBT System

MBT시스템의 호기성안정화반응기 온도제어가 안정화에 미치는 영향

Ban, Jong-Sub;Kwon, Sang-Hagk;Phae, Chae-Gun;Kim, Joung-Dae
반종섭;권상혁;배재근;김정대

  • Published : 20090000
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Abstract

The effect on biodegradation of filled material by temperature control in aerobic stabilization reactor with relate to MBT was estimated. An insulated stainless steel cylindrical type aerobic stabilization reactor with a volume of 60 l (35 cm in diameter, 85 cm in height) was fabricated to carried out the experiment. The aerobic stabilization reactor was equipped with an agitating motor, a gas outlet, a temperature sensor, an agitator, an air injection inlet. As a result of analyzing the temperature for the 352 hours when it was reacted, the controling temperature was carried out properly at the certain time (control temperature) when the rising temperature by oxidation heat of a microorganism. Also, $CO_2$ concentration of exhaust-gas tended to maintain from 13% to 23%. We were carried out to calculate total generated $CO_2$ to compare with the degradation rate. The comparison of calculated total generated $CO_2$ with the degradation rate showed that no control > at 50oC > at 60oC > at 40oC was in the order. In the result of study considered various factors, it was showed that the best condition was at 40oC in case of density and wet reduction. In case of the reduction of CODcr, TOC, Organism, Weight, Volume and Calorific value, the best condition was at 50${^{\circ}C}$. In conclusion of this study, the requirement of aerobic stabilization reactor in the MBT system was increased of the rate of reduction with degradation stabilization of biodegradable organism in a short time. For satisfaction of the best condition, it was confirmed that the air should be injected more than enough and the temperature should be controled about 50${^{\circ}C}$.

Keywords

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