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Mathematical modelling of wet oxidation of excess sludge in bubble columns

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A mathematical model enabling a quantitative description of wet oxidation of excess sludge in continuous bubble columns is proposed. The model consists of mass and heat transfer kinetic equations as well as material and heat balance equations of gas and liquid phases flowing through the absorber. The equations of material and heat balance refer to parallel, the co- and counter-current flow of gas and liquid phase and take a complex chemical reaction in the liquid phase core into account. The proposed model was used in a numerical simulation of wet oxidation in a bubble absorber for different process conditions: the flow rate and the composition of the gas and liquid phase, the temperature and pressure, and different heights and diameters of the column.
Rocznik
Strony
1--4
Opis fizyczny
Bibliogr. 13 poz., rys., tab.
Twórcy
autor
  • Faculty of Process and Environmental Engineering, Technical University of Łódź, 93-005 Łódź, ul. Wólczańska 213, chacuk@wipos.p.lodz.pl
Bibliografia
  • (1) Daun M., Birr R.: Treatment of wastewater sludge by wet oxidation with the VerTech-Deep Well Method., Wasser Boden, 1996, 48(5), 34.
  • (2) Debellefontaine H., Foussard J. N.: Wet air oxidation for the treatment of industrial wastes. Chemical aspects, reactor design and industrial applications in Europe, Waste Management, 2000, 20, 15.
  • (3) Debellefontaine H., Crispel S., Reilhac P., Périé F., Foussard J. N.: Wet air oxidation (WAO) for the treatment of industrial wastewater and domestic sludge. Design of bubble column reactors., Chem. Eng. Sci., 1999, 54(21), 4953.
  • (4) Grean-Heedfeld J., Schluter S., Daun M.: Modeling and Simulation of Deep Well Reactor for the Wet Air Oxidation of Sewage Sludge., Chem. Eng. Proc., 1995, 34 (2), 121.
  • (5) Khan Y., Anderson G. K., Elliot D. J.,: Wet Oxidation of Activated Sludge., Water Res., 1999, 33(7), 1681.
  • (6) Ploos van Amstel J. J., Rietema K.: Wet Air Oxidation of Sewage Sludge. Part II. The oxidation of Real Sludges., Chem. Ing. Tech., 1973, 45(20), 1205.
  • (7) Seve E., Antonini G.: Traitement des graisses de station d'epuration urbaine par oxydation en voie humide., Chem. Eng. J., 2000, 76(3), 179.
  • (8) Debellefontaine H., Cammas F. X., Deiber G., Foussard J. N., Reilhac P.: Wet Air Oxidation: kinetics of reaction, carbon dioxide equilibrium and reactor design - an overview; Water Sci. Technol.; 1997, 35(4), 111.
  • (9) Takamatsu, Takeichiro, Hashimoto, Iori, Sioya S.: Model Identification of Wet Air Oxidation Process Thermal Decomposition., Water Res., 1970, 4(1), 33.
  • (10) Tettamanti M., Lasagni M., Collina E., Sancassani M., Pitea D., Fermo P., Fariati F: Thermal Oxidation Kinetics and Mechanism of Sludge from a Wastewater Treatment Plant, Environ. Sci. Technol., 2001, 35, 3981.
  • (11) Zarzycki R., Imbierowicz M., Chacuk A.: Sprawozdanie dot. projektu badawczego 3TOC05914 pt. ,,Badanie mechanizmu i modelowanie procesu mokrego utleniania nadmiarowego osadu czynnego", Politechnika Łódzka, 2000.
  • (12) Zarzycki R., Chacuk A.: Absorption: Fundamentals & Applications, Pergamon Press, Oxford, 1993.
  • (13) Christiansen J.: Numerical solution of Ordinary Differential Equations of the 1-st Order Using a Method for Automatic Step Change, Numer. Math., 1970, 14, 317.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPS2-0039-0001
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