Mathematical Modeling and Simulation of Ozonation Processes in a Downstream Static Mixer with Sieve Plates

Author: Munter, Rein

Source: Ozone: Science and Engineering, Volume 26, Number 2, April 2004 , pp. 227-236(10)

Buy & download fulltext article:

Price: $56.94 plus tax (Refund Policy)

Abstract:

New standards for drinking water disinfection require better optimization of the ozonation stage on the basis of the concentration×contact time (CT) concept, and production of ozone from pure oxygen at higher concentrations presumes application of the new type of contactors operating efficiently at lower gas/liquid volumetric ratios. One possible construction to meet these requirements is a downstream static mixer with sieve plates. At higher flow rates of liquid in this mixer, the interfacial area may reach 10,000m 2 /m 3 at energy dissipation 1–5kW/m 3 . Due to the very intensive hydrodynamic regime the ozone utilization degree in the gas phase reaches 98–100% in natural lake water ozonation. Mathematical simulation of lake water ozonation in this mixer indicated that the process proceeds mostly in the diffusion or kinetic regime depending on the operating parameters. The dominating parameters besides the sieve geometry are the liquid flow rate in the holes of the sieves and the volumetric liquid/gas ratio.

Keywords: Ozone; Lake Water; Ozone Contacting; Downstream Static Mixer; Mathematical Modeling

Document Type: Research article

DOI: http://dx.doi.org/10.1080/01919510490439645

Affiliations: 1: Department of Chemical Engineering, Tallinn Technical University, Ehitajate 5, 19086, Tallinn, Estonia. , Email: rmunter@edu.ttu.ee

Publication date: 2004-04-01