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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.3
- 수록면
- 83 - 89 (7page)
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초록· 키워드
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The effects of initial solid concentration and microwave irradiation (MWI) time on the hydrolysis of waste activated sludge (WAS)were investigated. MWI time strongly influenced WAS hydrolysis for all initial solid concentrations of 8.20, 31.51, and 52.88 g VSS/L. For all WAS, the volatile suspended solids (VSS) solubilization degree ranged from 35.6% to 38.4% during a total MWI time of 10 min. Solublechemical oxygen demand (SCOD) concentration increased at a rate proportional to the decrease of VSS during the MWI. However, the clearly different VSS solubilization patterns that were observed during the MWI were explained by the 2-step hydrolysis of WAS, consisting of the initial disintegration of the easily degradable part of the sludge, followed by the subsequent disintegration of the hardlydegradable part of the sludge. WAS hydrolysis rates for 3 to 6 min of MWI were significantly lower than those for less than 3 min, or more than 6 min. From these results, 3 min MWI time and WAS of 31.51 g VSS/L (centrifugal thickener WAS) showed the most efficienthydrolysis of WAS at 36.0%. The profiles of total nitrogen (T-N) concentrations corresponded well to the SCOD increases in terms of the empirical formula of bacterial cell mass (C5H7O₂N). The negligible T-N increase and pH decrease during WAS hydrolysis by MWI will allowthe application of this process to subsequent biological processes, such as anaerobic digestion.
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참고문헌 (37)
참고문헌 신청
1. [단행본] - Korea Ministry of Environment / 2013 / White paper of environment 2012 / Ministry of Environment
2. [학술지(정기간행물)] - Neyens E / 2003 / A review of thermal sludge pre-treatment processes to improve dewaterability / J. Hazard. Mater 98 : 51 ~ 67
3. [학술지(정기간행물)] - Appels L / 2008 / Principles and potential of anaerobic digestion of waste-activated sludge / Prog. Energy Combust. Sci 34 : 755 ~ 781
4. [학술지(정기간행물)] - Flemming HC / 2001 / Relevance of microbial extracellular polymeric substances (EPSs): Part I. Structural and ecological aspects / Water Sci. Technol 43 : 1 ~ 8
5. [학술지(정기간행물)] - Vavilin VA / 1996 / Modeling of volatile fatty acids degradation kinetics and evaluation of microorganism activity / Bioresour. Technol 57 : 69 ~ 80
2. [학술지(정기간행물)] - Neyens E / 2003 / A review of thermal sludge pre-treatment processes to improve dewaterability / J. Hazard. Mater 98 : 51 ~ 67
3. [학술지(정기간행물)] - Appels L / 2008 / Principles and potential of anaerobic digestion of waste-activated sludge / Prog. Energy Combust. Sci 34 : 755 ~ 781
4. [학술지(정기간행물)] - Flemming HC / 2001 / Relevance of microbial extracellular polymeric substances (EPSs): Part I. Structural and ecological aspects / Water Sci. Technol 43 : 1 ~ 8
5. [학술지(정기간행물)] - Vavilin VA / 1996 / Modeling of volatile fatty acids degradation kinetics and evaluation of microorganism activity / Bioresour. Technol 57 : 69 ~ 80
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UCI(KEPA) : I410-ECN-0101-2017-539-001538980