Project #4701

Verification of the Effect of pH on Microbial Inactivation Efficiency of Free Chlorine

$140,598
Completed
Principal Investigator
Issam
Najm
Research Manager
Hyunyoung Jang, PhD
Contractor
Water Quality & Treatment Solutions, Inc.
Microbes & Pathogens
Treatment

Abstract

This project validated the ability of the chemical speciation model to represent the effect of pH on microbial inactivation with chlorine. The outcome of this project will benefit all water utilities that desire to receive credit for the inactivation of Giardia cysts with chlorine at pH values higher than 9.0. Research partner: East Bay Municipal Utility District. Published in 2019.