Browse > Article
http://dx.doi.org/10.7849/ksnre.2014.10.1.020

Enhancement of Anaerobic Biodegradability and Solubilization by Thermal Pre-treatment of Waste Activated Sludge  

Jeong, Seongyeob (Department of Environmental Energy Engneering, Kyonggi University)
Jung, Sukyoung (Department of Environmental Energy Engneering, Kyonggi University)
Chang, Soonwoong (Department of Environmental Energy Engneering, Kyonggi University)
Publication Information
New & Renewable Energy / v.10, no.1, 2014 , pp. 20-29 More about this Journal
Abstract
The present study investigated the effects of thermal pre-treatment on the enhancement of anaerobic biodegradability of waste activated sludge at varied TS concentration levels. The activated sludges were thermally oxidized for 30 minutes at $80{\sim}200^{\circ}C$ with varied TS concentrations (2%, 4% and 6%). and then, sludge characteristics, solubilization efficiency and methane production yield of thermally pre-treated sludges were analyzed. The higher the temperature in the thermal pre-treatment, the higher the concentration levels of dissolved matters such as $SCOD_{Cr}$, $NH_4{^+}$ and VFAs, which indicates that the thermal pre-treatment facilitates the hydrolysis and acid fermentation. Furthermore, the solubilization efficiency was increased in proportion to the temperature rise at all TS concentrations and was reached at 68.9%, 55.6% and 53.1%, respectively, at $200^{\circ}C$. In the BMP test of the pre-treated sludges, higher methane production yields were observed as 0.313. 0.314 and $0.299m^3\;CH_4/kg\;VS_{add}$ at the condition of TS 2% ($160^{\circ}C$), 4% ($160^{\circ}C$) and 6% ($180^{\circ}C$), respectively, and degradation rate was increased by 84%, 79% and 65% compared with non-pretreated waste activated sludge. These findings suggest the effectiveness of thermal pre-treatment of waste activated sludge for anaerobic biodegradable process.
Keywords
Waste activated sludge; Thermal pre-; Solubilization; Biochemical methane potential; Anaerobic digestion;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Heo, N. H., Lee, S. H. and Kim, B. K., 2008, "Biogas production and utilization technologies from organic waste", Journal of The Korean Society for New and Renewable Energy, Vol. 4, No. 2, pp. 21-30.   과학기술학회마을
2 Korea Energy Management Corporation, 2012, "New & Renewable energy white paper".
3 Nam, Y. W. and Han, K. S., 2011, "A Study on the Present State and Improvement Plan of Domestic Sewage Sludge Treatment", Journal of Korea Society of Waste Management, Vol. 28, No. 1, pp. 103-109.
4 Gyeonggi Research Institute, 2011, "Improvement of Digestion Tank Efficiency and Feasibility Study on Biomass gas use".
5 Lee, C. Y. and Park, S. Y., 2008, "Improvement of Solubilization and Anaerobic Biodegradability for Sewage Sludge Using Ultrasonic Pre-treatment", Journal of Korea Organic Resource Recycling Association, Vol. 16, No. 3, pp. 83-90.
6 Wang, J., Wang, W., Zhang, X. and Zang, G., 2009, "Digestion of thermally hydrolyzed sewage sludge by anaerobic sequencing batch reactor", Journal of Hazardous Materials, Vol. 162, No. 2-3, pp. 799-803.   DOI   ScienceOn
7 Neyens, E. and Baeyens, J., 2003, "A review of thermal sludge pre-treatment processes to improve dewaterability", Journal of Hazardous Materials, Vol. 98, No. 1-3, pp. 51-67.   DOI   ScienceOn
8 Owen, W., Stuckey, D., Healy, J., Young, L. and McCarty, P., 1979, "Bioassay for monitoring biochemical methane potential & anaerobic toxity", Water Research, Vol. 13, No. 6, pp. 485-492.   DOI   ScienceOn
9 Stuckey, D. C. and McCarty, P. L.,1982, "The effect of thermal pretreatment on the anaerobic biodegradability and toxicity of waste activated sludge", Water resource, Vol. 18, No. 11, pp. 1343-1353.
10 Park, Y. J., Tsuno, H., Hidaka, T. and Kim, S. K., 2007, "Effect of Heat Treatment of Sewage Sludge on Solubilization and Thermophilic Acid fermentation efficinecy", Journal of Korea Organic Resource Recycling Association, Vol. 15, No. 2, pp. 89-97.
11 Val del Rio, A., Morales, N., lsanta, E., Mosquera-Corral, A., Campos, J. L., Steyer, J. P. and Carrere, H., 2011, "Thermal pre-treatment of aerobic granular sludge: Impact on anaerobic biodegra-dability", Water Research, Vol. 45, No. 18, pp. 6011-6020.   DOI   ScienceOn
12 Dwyer, J., Starrenburg, D., Tait, S., Barr, K., Batstone, D. J. and Lant, P., 2008, "Decreasing activated sludge thermal hydrolysis temperature reduces product colour, without decreasing degradability", Water research, Vol. 42, No. 18, pp. 4699-4709.   DOI   ScienceOn
13 APHA-AWWA-WEF, 2005, "Standard methods for the examination of water & wastewater, 21st edition", Health asso- ciation, Washington, D. C., USA.
14 Yang, X., Wang, X. and Wang, L., 2010, "Transferring of components and energy output in industrial sewage sludge disposal by thermal pretreatment and two-phase anaerobic process", Bioresource Technology, Vol. 101, No. 8, pp. 2580-2584.   DOI   ScienceOn
15 Valo, A., Carrere, H. and Delgenes, J. P., 2004, "Thermal, chemical and thermo- chemical pre-treatment of waste activated sludge for anaerobic digestion", Journal of Chemical Technology and Biotechnology, Vol. 79, No. 11, pp. 1197-1203.   DOI   ScienceOn
16 Bougrier, C., Albasi, C., Delgenes, J. P. and Carrere, H., 2006, "Effect of ultrasonic, thermal and ozone pretreatments on waste activated sludge solubilisation and anaerobic biodegrada bility", Chemical Engineering and Pro- cessing, Vol. 45, No. 8, pp. 711-718.   DOI   ScienceOn
17 Kim, J. S., Park, C. H., Kim, T. H., Lee, M. G., Kim, S. Y., Kim, S. W. and Lee, J. W., 2003, "Effects of various pretreatments for enhanced anaerobic digestion with waste activated sludge", Journal of Bioscience and Bioengineering, Vol. 95, No. 3, pp. 271-275.   DOI   ScienceOn
18 Sung, S. H. and Liu, T., 2003, "Ammonia inhibition on thermophilic anaerobic digestion", Chemosphere, Vol. 53, No. 1, pp. 43-52.   DOI   ScienceOn
19 Lay, J. J., Li, Y. Y. and Noike, T., 1998, "The influence of pH and ammonia con- centration on the methane production in high-solids digestion processes", Water Environment Research, Vol. 70, No. 5, pp. 1075-1082.   DOI   ScienceOn
20 Wilson, C. A. and Novak, J. T., 2009, "Hydrolysis of macromolecular components of primary and secondary wastewater sludge by thermal hydrolytic pretreat ment", Water Research, Vol. 43, No. 18, pp. 4489-4498.   DOI   ScienceOn
21 Seviour, T., Pijuan, M., Nicholson, T., Keller, J. and Yuan, Z., 2009, "Gel- forming exopolysaccharides explain basic differences between structures of aerobic sludge granules and floccular sludges", Water Research, Vol. 43, No. 18, pp. 4469-4478.   DOI   ScienceOn
22 Donoso-Bravo, A., Perez-Elvira, S., Aymerich, E. and Fdz-Polanco, F., 2010, "Assessment of the influence of thermal pre-treatment time on the macromolecular composition and anaerobic biodegradability of sewage sludge", Bioresource Technology, Vol. 102, No. 2, pp. 660-666.
23 Bougrier, C., Delgenes, J. P. and Carrere, H., 2008, "Effects of thermal treatments on five different waste activated sludge samples solubilization, physical properties and anaerobic digestion", Chemical Engineering Journal, Vol. 139, No. 2, pp. 236-244.   DOI   ScienceOn
24 Dwyer, J., Starrenburg, D., Tait, S., Barr, K., Batstone, D. J. and Lant, P., 2008, "Decreasing activated sludge thermal hydrolysis temperature reduces product colour, without decreasing degradability", Water Research, Vol. 42, No. 18, pp. 4699-4709.   DOI   ScienceOn
25 Bougrier, C., Delgenes, J. P. and Carrere, H., 2007. Impacts of thermal pretreatments on the semi-continuous anaerobic digestion of waste activated sludge, Biochemical Engineering Journal, Vol. 34, No. 1, pp. 20-27.   DOI   ScienceOn
26 Mottet, A., Steyer, J. P., Deleris, S., Vedrenne, F., Chauzy, J. and Carrere, H., 2009, "Kinetics of thermophilic batch anaerobic digestion of thermal hydrolysed waste activated sludge", Biochemical Engineering Journal, Vol. 46, No. 2, pp. 169-175.   DOI   ScienceOn
27 Angelidaki, I. and Ahring, B. K., 1994, "Anaerobic thermophilic digestion of manure at different ammonia loads: effect of temperature", Water Research, Vol. 28, No. 3, pp. 727-31.   DOI   ScienceOn