Experimental and theoretical study of agitated contact drying of sewage sludge under partial vacuum conditions

Drying Technology

Volumn 27, Issue 6, 2009, Pages 787-796

  Yan, Jian Hua ^a   Deng, Wen Yi ^a   Li, Xiao Dong ^a   Wang, Fei ^a   Chi, Yong ^a   Lu, Sheng Yong ^a   Cen, Ke Fa ^a  

^a ZHEJIANG UNIVERSITY   (China)

Author keywords

Crust formation; Drying; Paddle dryer; Penetration model; Sewage sludge

Indexed keywords

CONTACT DRYING; CRUST FORMATION; DRYING KINETIC; DRYING MECHANISM; DRYING PARAMETERS; DRYING RATES; HEATING TEMPERATURES; MASS TRANSFER RESISTANCES; PADDLE DRYER; PARTIAL VACUUM; PARTICULATE MATERIALS; PENETRATION MODEL; PENETRATION MODELS; PRESSURE AND TEMPERATURE; STIRRER SPEED; STIRRING SPEED; SYSTEM PRESSURE; TEMPERATURE DIFFERENCES; THEORETICAL STUDY; VACUUM CONTACT DRYING;

CURING; DEWATERING; DRYERS (EQUIPMENT); SEWAGE SLUDGE; VACUUM; VACUUM APPLICATIONS;

DRYING;

EID: 68049142579     PISSN: 07373937     EISSN: 15322300     Source Type: Journal    
DOI: 10.1080/07373930902900911     Document Type: Article

References (24)

1. Lin, Y.Q.; Zhou, S.H.Q. Investigation and analysis on the disposal and treatment of sludge in China. Energy Environment and Protection 2004 18 (6), 15-18.
2. Grüter, H.; Matter, M.; Oehlmann, K.H.; Hicks, M.D. Drying of sewage sludge - An important step in waste disposal. Water Science and Technology 1990, 22 (12), 57-63.
3. Arlabosse, P.; Chavez, S.; Prevot, C. Drying of municipal sewage sludge: From a laboratory scale batch indirect dryer to the paddle dryer. Brazilian Journal of Chemical Engineering 2005, 22 (2), 227-232.
4. Devahastin, S.; Mujumdar, A.S. Indirect dryers. In Mujumdar, A.S., Ed.; Handbook of Industrial Drying, 3rd Ed; CRC Press: Boca Raton, 2007; 137-149.
5. Lowe, P. Development in the thermal drying of sewage sludge. Water Environment Journal 1995, 9 (3), 306-316.
6. Hudson, J.A.; Lowe, P. Current technologies for sludge treatment and disposal. Water Environment Journal 1996, 10 (6), 436-441.
7. Arlabosse, P.; Chavez, S.; Lecomte, D. Method for thermal design of paddle dryers: Application to municipal sewage sludge. Drying Technology 2004, 22 (10), 2375-2393.
8. Chen, J.B.; Peng, X.F.; Tao, T.; Lee, D.J. Thermal drying of wastewater sludge with crack formation. Water Science and Technology 2004, 50 (9), 177-182.
9. Chun, W.P.; Lee, K.W. Sludge Drying Characteristics on Combined System of Contact Dryer and Fluidized Bed Dryer. Paper presented at the 14th International Drying Symposium, Sao Paulo, Brazil, August 22-25, 2004; 1055-1061.
10. Hippinen, I.; Ahtila, P. Drying of activated sludge under partial vacuum conditions - An experimental study. Drying Technology 2004, 22 (9), 2119-2134.
11. Schlünder, E.U.; Mollekopf, N. Vacuum contact drying of free flowing mechanically agitated particulate materials. Chemical Engineering and Processing 1984, 18 (2), 93-111.
12. Dittler, A.; Bamberger, T.; Gehrmann, D.; Schlünder, E.U. Measurement and simulation of the vacuum contact drying of pastes in a LIST-type kneader drier. Chemical Engineering and Processing 1997, 36 (4), 301-308.
13. Arlabosse, P.; Chitu, T. Identification of the limiting mechanism in contact drying of agitated sewage sludge. Drying Technology 2007, 25 (4), 557-567.
14. Mollekopf, N. Wärmeübertragung an Mechanisch Durchmischtes Schüttgut mit Wärmesenken in Kontaktapparaten; Ph.D Thesis, University of Karlsruhe, 1983.
15. Vaxelaire, J. Moisture sorption characteristics of waste activated sludge. Journal of Chemical Technology and Biotechnology 2001, 76, 377-382.
16. Chen, G.W.; Hung, W.T.; Chang, I.L.; Lee, S.F.; Lee, D.J. Continuous classification of moisture content in waste activated sludges. Journal of Environmental Engineering 1997, 123, 253-258.
17. Ferrasse, J.H.; Lecomte, D. Simultaneous heat-flow differential calorimetry and thermogravimetry for fast determination of sorption isotherms and heat of sorption in environmental or food engineering. Chemical Engineering Science 2004, 59 (6), 1365-1376.
18. Vaxelaire, J.; Mousques, P.; Bongiovanni, M.; Puiggali, J.R. Desorption isotherms of domestic activated sludge. Environmental Technology 2000 21, 327-335.
19. Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry, ASTM E1269-01; Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry, American Society for Testing and Materials, West Conshohocken, PA, 2001.
20. Dewil, R.; Baeyens, J.; Neyens, E. Fenton peroxidation improves the drying performance of waste activated sludge. Journal of Hazardous Materials 2005, 117 (2-3), 161-170.
21. Carlslaw, H.; Jaeger, J. Conduction of Heat in Solids, 2nd Ed.; Oxford University Press: London, 1960.
22. Tsotsas, E.; Schlünder, E.U. Contact drying of mechanically agitated particulate material in the presence of inert gas. Chemical Engineering and Processing 1986, 20 (6), 277-285.
23. China National Standard, Method for Calorific Value Analysis of Coal GB/T 213; 2003.
24. Deng, W.Y.; Yan, J.H.; Li, X.D.; Wang, F.; Zhu, X.W.; Lu, S.Y.; Cen, K.F. Emission characteristics of volatile compounds during sludges drying process. Journal of Hazardous Materials 2009, 15 (1 , 186-192.