Water Science & Technology: Water Supply Vol 1 No 2 pp 191–200 © IWA Publishing 2001
Integrated modelling of ozonation processes in water treatment
H Zhou* and DW Smith**
*
School of Engineering, University of Guelph, Guelph, Ontario, Canada N1G 2W1
(email: hzhou@uoguelph.ca)
**
Department of Civil & Environmental Engineering, University of Alberta,
Edmonton, Alberta, Canada N1G 2G7 (email: dwsmith@civil.ualberta.ca)
ABSTRACT
This paper presents the formulation of an integrated Back Flow Cell Model
(IBFCM) for ozonation processes by incorporating together the contactor
hydrodynamics, mass transfer, ozone decay in water, microbial inactivation,
and disinfection by-products formation to describe the significance of their
interrelated nature in determining the overall process performance. It also
summarizes the experimental procedures that could be used to quantify the
characteristic parameters for each process component. The model
applicability was then illustrated by comparing the predictions with
the experimentally observed dissolved ozone profiles. Further analysis
was made to demonstrate the model application for predicting the
disinfection efficiency and disinfection by-products formation
simultaneously. From these analyses, it was also found that during
the ozonation of natural waters, the ozone decay could not be described
by the simple first order rate expression.
Full article (PDF Format)
PAY-PER-VIEW: Buy this article for £20.00 (IWA MEMBER PRICE: £15.00)
|
