Influence of contactor hydrodynamic behaviour on the efficiency of the ozonation process

• Autorzy: Olsińska, U.M.
• Języki publikacji: EN

Abstrakty

EN

The efficiency of the ozonation process is affected by the following major factors: gas-liquid dispersion (interfacial gas-liquid surface) and the contact time, as well as some other parameters influencing the mass transfer ratę and the kinetics of the chemical reactions. This is why the intensity of mixing in the dissolution system becomes a key issue. Mixing intensity depends on the volumetric liąuid flow ratę, the volumetric gas flow ratę and the reactor geometry. The primary objective of the study reported in the paper was to analyze the problem of how the said parameters influence the hydraulic behaviour of the contactor. The study showed strong influence of the investigated parameters not only on the hydrodynamics of the contactor, but also on the efficiency of the ozone transfer and the effectiveness of the oxidation/disinfection processes. The pług flow reactor seems to be a prereąuisite of an effective ozone use for microorganisms inactivation.

Słowa kluczowe

PL

system rozpuszczania ozonu; zachowanie hydrodynamiczne; utlenianie/dezynfekcja

EN

ozone dissolution system; hydrodynamic behaviour; oxidation/disinfection

• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2002
• Tom: Vol. 4, nr 2
• Strony: 21-27
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Olsińska, U.M.

• Politechnika Śląska, Wydział Inżynierii Środowiska i Energetyki, Instytut Inżynierii Wody i Ścieków , 44-100 Gliwice, ul. Kotlarskiego 18, tel./fax: [phone],

Bibliografia

• (1) Cooperative research, Ozone in Water Treatment. Application and Engineering, Lewis Publishers, Chelsea 1991.
• (2) Cramith, J. T., Demonstration - Scale Evaluation of Bromate Formation and Control Strategies, Proc. Ann. Conf., AWWA, San Antonio, 1993, 98 - 104.
• (3) Do-Quang, Z., Ramirez, C.C., Roustan, M., Influence of Geometrical Characteristics and Operating Conditions on the Effectiveness of Ozone Contacting in Fine-Bubbles Conventional Diffusion Reactors, Ozone Science & Engineering, 2000, 4 (22), 369 - 378.
• (4) Schultz, C.R., Bellamy, W., The Role of Mixing in Ozone Dissolution Systems, Proc. 14th Ozone World Congress, IGA, Dearborn, 1999, 575 - 595.
• (5) Olsińska, U., Kuś, K., Role of hydrodynamic behaviour of contact columns in the ozonation process. Ochrona Środowiska, 2(81), 2001, 15 - 20.
• (6) Mallevialle, J., Influence and removal of Organics in Drinking Water, Levis Publishers, Boca Raton, 1992.
• (7) Levenspiel, O., Chemical Reaction Engineering, J Wiley & Sons, New York, 1999.
• (8) Olsińska, U., Olsiński, A., Determination of bromate and bromide ions in drinking by ion chromatography. Archiwum Ochrony Środowiska, 3, 2001, 85 - 97.
• (9) Schultz, C.R., Prendiville, P.W., Designing High Concentration Ozone Contactors for Drinking Water Treatment Plants, Ozone Science & Engineering, 1993, 4 (15), 245 - 266.