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Design Criteria for Inactivation of Cryptosporidium by Ozone in Drinking Water
Journal article   Peer reviewed

Design Criteria for Inactivation of Cryptosporidium by Ozone in Drinking Water

G.R. Finch (deceased), C.N. Haas(corresponding author), J.A. Oppenheimer, G. Gordon and R. R. Trussell
Ozone: science & engineering, v 23(4)
01 Jan 2001

Abstract

Cryptosporidium Disinfection Drinking Water Gamma Hom Model Kinetics Ozone
Literature on ozone inactivation of Cryptosporidium was critically reviewed and analyzed. A set of criteria was established for selecting data from diverse sources and experimental protocols with the objective of compiling comparable data. Several kinetic models were evaluated ranging from the 4-parameter Hom "Power Law model to the single parameter Chick model. No single kinetic model gave a "best fit" to all of the data sets. On a case-by-case basis, the "best fit" models included the 3-parameter incomplete gamma Horn model, the 2-parameter Chick-Watson model, and the one parameter Chick model. Temperature effects were obscured in the natural water data when analyzed as a single aggregate data set. However, three natural waters each analyzed at several temperatures provided temperature effects for natural waters. While the time required to achieve 2 logs kill at 1 mg/L was approximately doubled for each 10°C drop in temperature in die laboratory waters, in natural waters the time increased by a factor of 4.5. pH apparently had little effect between pH 6 and 8 in laboratory waters while in natural waters pH 6 may enhance inactivation. "

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UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#6 Clean Water and Sanitation

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Engineering, Environmental
Environmental Sciences
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