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DOI : , Vol.22, No.4, 91 ~ 101, 2014
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| Title |
| Evaluation on the Effect of Microbial Kinetic Changes in Activated Sludge Proces |
| 김연권 Youn Kwon Kim , 박선욱 Sun Uk Park , 김홍석 Hong Suck Kim , 김지연 Ji Yeon Kim |
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| Abstract |
| As a microbial growth and limitation point of view, F/M ratio and C/N ratio are one of the most important parameters for process optimization in biological wastewater treatment process. Municipal sewage in Korea is characterized by extremely low content of carbon source and relatively higher portion of N source. Accordingly, it is necessary to dose external carbon source in order to obtain higher degree of carbon source within the process. Filtered-wastewater from thermal hydrolysis process(THP) will lead to maximize F/M ratio and to exchange microbial kinetic within the process. In this study, the effects of filtered-wastewater from THP as an alternative plan for increasing carbon source on the cell disintegration and COD solubility of waste activated sludge were conducted under well defined experimental conditions. During 5 hours, the values of specific nitrification rate(SNR) and specific de-nitrification rate(SDNR) were 0.24∼0.51mg/g/hr and 0.08∼0.25mg/g/hr, respectively. Specific phosphate release rate(SPRR) and Specific phosphate uptake rate(SPUR) values were 0.29∼2.47mg/g/hr and 0.22∼2.93mg/g/hr, respectively. The value of Specific substrate uptake rate(SSUR) for filtered-wastewater from THP is approximately 2.8 times higher than the value of SSUR for reference sample. |
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| Key Words |
| Biological Wastewater Treatment, Thermal Hydrolysis Process, Microbial Kinetic Change |
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