초음파 결합형 SBR 호기성 소화의 모델과 매개변수의 보정 = Numerical Model for SBR Aerobic Digestion Combined with Ultrasonication and Parameter Calibration

다국어 초록 (Multilingual Abstract)

Based on the activated sludge model(ASM), a mathematical model which represents the aerobic sludge digestion by sequencing batch reactor(SBR) combined with ultrasonic treatment was composed and performed in this study. Aerobic digestion using sequencing batch reactor(SBR) equipped with ultrasound treatment was also experimented for the purpose of parameter calibration. Most of the presented kinetic parameters in ASM or ASM2 could be used for the aerobic digestion of sludge but the parameters related in hydrolysis and decay rate needed modification. Hydrolysis rate constant of organic matter in aerobic condition was estimated at 0.3 day-1 and the maximum growth rate for autotrophs in aerobic condition was 0.618 day-1. Solubilization reactions of particulate organics and nitrogen by ultrasonication was added in this kinetic model. The solubilization rate is considered to be proportional to the specific energy which is defined by specific ultrasound power and sonication time. The solubilization rate constant by ultrasonication was estimated at 0.202(W/L)-1day-1 in this study. Autotrophs as well as heterotrophs also decomposed by ultrasonic treatment and the nitrification reaction was limited by the lack of autotrophs accumulation in the digester.

참고문헌 (Reference)

1 김성홍, "초음파 결합형 SBR 호기성 소화 모델과 영향 예측" 대한상하수도학회 26 (26): 897-905, 2012

2 김성홍, "간헐포기에 의한 슬러지의 호기성 소화 기술" 대한토목학회 22 (22): 245-252, 2002

3 Warner A. P. C., "The activated sludge process-IV. Application of the general kinetic model to anoxic-aerobic digestion of waste activated sludge" 20 (20): 943-958, 1986

4 Gujer W., "The activated sludge model no. 2:biological phosphorus removal" 31 (31): 1-11, 1995

5 Bougrier C., "Solubilisation of waste-activated sludge by ultrasonic treatment" 106 : 163-169, 1995

6 Bhargava D.S., "Progress and kinetics of aerobic digestion of secondary sludges" 22 (22): 37-47, 1988

7 Kim D.H., "Modeling and dynamic simulation for biological nutrient removal in a sequencing batch reactor(I)" 13 (13): 42-55, 1999

8 Wang F., "Mechanisms and kinetics models for ultrasonic waste activated sludge disintegration" 123 : 145-150, 2005

9 Li C., "Kinetics model for combined (alkaline+ultrasonic) sludge disintegration" 101 : 8555-8557, 2010

10 Kim M.H., "Comparison of activated sludge stabilization under aerobic or anoxic condition" 62 (62): 160-168, 1990

11 Wang X., "Characteristics of organic, nitrogen and phosphorus species released from ultrasonic treatment of waste activated sludge" 176 : 35-140, 2010

12 Henze M., "Activated sludge models ASM1, ASM2, ASM2d and ASM3, In IWA task group on mathematical modelling for design and operation of biological wastewater treatment" IWA publishing 2007

13 Gujer W., "Activated sludge modelling and simulation" 23 : 1011-1023, 1991