Browse > Article

Organic Matter Degradation and Nitrification Characteristics in Aerobic Digestion of Sewage Sludge  

Hwang, Eung-Ju (Department of Environmental Engineering, Daegu University)
Publication Information
Abstract
Continuous operation of aerobic sludge digestion reactor was attempted for 279 days. Anaerobic digester sludge, the target material of the experiment, was pretreated by sodium hydroxide at $40^{\circ}C$ for 120 minutes, and the pretreated sludge was fed to 5 L CSTR (continuous stirred tank reactor). Reactor performance was affected by properties of input sludge and HRT (hydraulic retention time). 6 days of HRT showed best and stable performance, and under this condition, removal rates of $NH_3$-N, SCOD, TKN, TCOD, SS, and VSS were 97.4%, 81.7%, 68.7%, 61.4%, 50.6%, and 47.0%, respectively. 73.9% of SS in anaerobic digester sludge was reduced by pretreatment and aerobic digestion. Effluent sludge had low soluble COD of 350 mg/L. This implied the sludge was stabilized and suitable for use as liquid fertilizer. Nitrification took place when HRT was higher than 4 days. $NO_3$-N concentration was as high as 658 mg/L while $NH_3$-N was as low as 20 mg/L.
Keywords
Sludge; Aerobic digestion; Liquid fertilizer; Nitrification; Hydraulic retention time;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 환경부, 하수도 통계, http://info.waternow.go.kr
2 Mason, C. A., Hamer, G., Fleischmann, Th., and Lang, C., 'Bioparticulate solubilization and biodegradation in semicontinuous aerobic thermophilic digestion', Water, Air, Soil Pollut., 34(4), 399-407(1987)
3 Genc, N., Yonsel, S., Dagasan, L., and Onar, A. N., 'Investigation of organic nitrogen and carbon removal in the aerobic digestion of various sludges', Environ. Monitoring Assessment, 80, 97-106(2002)   DOI   ScienceOn
4 신총식, '유기성오니 처리 종합대책(안)', 특별 기획 Symposium: 해양투기 금지에 따른 유기성오니(하수오니) 종합대책 및 기술동향, 한국폐기물학회, 대전, pp. 1-17(2006)
5 Viraraghavan, T. and Ionescu, M., 'Land application of phosphorus~laden sludge: a feasibility analysis', J. Environ. Management, 64(2), 171-177(2002)   DOI   ScienceOn
6 Anderson, B. C. and Mavinic, D. S., 'Behaviour and control of nutrients in the enhanced aerobic digestion process: pilot scale studies', Environ. Technol., 14, 301-318(1993)   DOI   ScienceOn
7 Estrada, I. B., Gomez, E., Aller, A., Moran, A., 'Microbial monitoring of the influence of the stabilization degree of sludge when applied to soil', Bioresour. Technol., 97(11), 1308-1315(2006)   DOI   ScienceOn
8 Smith, S. R., Agricultural Recycling of Sewage Sludge and the Environment. CAB International, (1996)
9 Bhargava, D. S. and Datar, M. T., 'Ananalysis of nitrification during the aerobic digestion of secondary sludges', Environ. Pollut., 58(1), 57-72(1989)   DOI   ScienceOn
10 California Compost Quality Council, Compost Maturity Index, pp. 9-11(2001)
11 이영옥, 황진규, 황응주, 슬러지 액비의 비효효과 및 안정성 평가', 대한환경공학회지, 30(3), 314-322(2008)
12 Rittmann, B. E. and McCarty, P. L., Environmental Biotechnology, McGraw-Hill Korea(한역판), 579-590(2002)
13 Munson, A. D. and Bernier, P. Y., 'Comparing natural and planted black spruce seedling II. Nutrient uptake and efficiency of use', J. Forest Res., 23, 2435-2442 (1993)   DOI   ScienceOn
14 Bobbink, R. and Berendse, F., 'A comparative study on nutrient cycling in wet healthland ecosystem II. Litter decomposition and nutrient mineralization', Oecologia, 78, 338-348(1989)   DOI
15 Oviedo, M. D. C., Ramirez, J. A. L., Marquez, D. S., Alonso, J. M. Q., 'Evolution of an activated sludge system under starvation conditions', Chem. Eng. J., 94, 139-146(2003)   DOI   ScienceOn
16 Neyen, E., Baeyens, J., and Creemers, C., 'Alkaline thermal sludge hydrolysis', J. Hazard. Mater., B97, 295-314 (2003)
17 황응주, '알칼리 전처리에 의한 슬러지 호기성 소화 및 액비 특성 변화', 대한환경공학회지, 30(1), 90-96(2008)
18 Singh, R. P. and Agrawal, M., 'Potential benefits and risks of land application of sewage sludge', Waste Management, 28(2), 347-358(2008)   DOI   ScienceOn
19 Aerts, R. and Berendse, F., 'The effect of increased nutrient availability on vegetation dynamics in wet healthlands', Vegetation, 76, 63-69(1988)
20 Matsuda, A., Ide, T., and Fujii, S., 'Behaviour of nitrogen and phosphrous during batch aerobic digestion of waste activated sludge-continuous aeration and intermittent aeration by control of DO', Water Res., 22(12), 1495-1501(1988)   DOI   ScienceOn
21 American Public Health Association/American Water Works Association/Water Environment Federation, Standard Methods for the Examination of water and Wastewater, 20th edn, (1998)
22 Khalili, N. R., Chaib, E., Parulekar, S. J., and Nykiel, D., 'Performance enhancement of batch aerobic digesters vai addition of digested sludge', J. Hazard. Mater., B76, 91-102(2000)