Performance and Bacterial Communities for Bio-drying with Thermophili Bacteria of Sewage Sludge
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This study was conducted to evaluate the effect of the sewage sludge treatment method using bio-drying with Ultra-Thermophilic Aerobic Microorganisms (UTAMs). Twelve specific odorous compounds and various sources of bacteria were tested using the sewage sludge treatment method. Sewage sludge was mixed with a seed material and was composted for 47 days. During composting, the temperature was maintained at 80-90oC. The concentrations of the 12 specific odorous compounds after composting did not exceed the allowable exhaust standard for odor. In terms of the bacterial community number after composting, the thermophile bacterial number was 60% of the total bacterial number. The thermophile bacterial ratio after composting increased by 23% compared to the initial composting. The 16S rRNA gene demonstrated that the change in the bacterial community structure was coupled with shifts in the bio-drying process. Therefore, both stable composting operation and economic benefit can be expected when an ultra-thermophilic composting process is applied to sewage sludge.
Keywordsbio-drying sewage sludge thermophile bacteria ultra-thermophilic aerobic microorganisms 16S rRNA
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- APHA (American Public Health Association) (2005). Standard methods for the examination of water and wastewater, 21st ed; APHA, Washington D.C., USA.Google Scholar
- Fogarty, A. M. and Tuovinen, O. H. (1991). “Microbiological degradation of pesticides in yard waste composting.” Microbiol. Rev., Vol. 55, No. 2, pp. 225–233.Google Scholar
- Kuok, F., Mimoto, H., and Nakasaki, K. (2012). “Effects of turning on the microbial consortia and the in situ temperature preferences of microorganisms in a laboratory-scale swine manure composting.” Bioresour. Technol., Vol. 116, No. 4, pp. 421–427, DOI: 10.1016/j.biortech.2012.03.106.CrossRefGoogle Scholar
- Ministry of Environment in Korean (2015). Environmental Statistics Yearbook, https://doi.org/library.me.go.kr/search/DetailView.ax?sid=1&cid=155027.
- Shen, Y. J., Chen, T. B., Gao, D., Zheng, G. D., Liu, H. T., and Yang, Q. W. (2012). “Online monitoring of volatile organic compound production and emission during sewage sludge composting.” Bioresour. Technol., Vol. 123, No. 4, pp. 463–470, DOI: 10.1016/j.biortech.2012.05.006.CrossRefGoogle Scholar
- Storey, S., Chualain, D. N., Doyle, O., Clipson, N., and Doyle, E. (2015). “Comparison of bacterial succession in green waste composts amended with inorganic fertilizer and wastewater treatment plant sludge.” Bioresour. Technol., Vol. 179, pp. 71–77, DOI: 10.1016/j.biortech.2014.11.107.CrossRefGoogle Scholar
- Takahiro, Y., Toshiyuki, M., and Tairo, O. (2013). “Bacterial and biochemical properties of newly invented aerobic, High-Temperature compost.” In book: Thermophilic Microbes in Environmental and Industrial Biotechnology, Springer, Dordrecht, Netherland, pp. 119–135, DOI: 10.1007/978-94-007-5899-5_4.Google Scholar
- Tchobanoglous, G., Burton, F. L., and Stenser, H. D. (2004). Wastewater engineering: Treatment and reuse, McGrow-Hill Publishing, New York, USA.Google Scholar
- Zhao, L., Wang, X. Y., Gu, W. M., Shao, L. M., and He, P. J. (2011). “Distribution of C and N in soluble fractionations for characterizing the respective biodegradation of sludge and bulking agents.” Bioresour. Technol., Vol. 102, No. 22, pp. 10745–10749, DOI: 10.1016/j.biortech.2011.08.111.CrossRefGoogle Scholar