I was responsible for dosing ...

Published by

I was responsible for dosing ClO2 as a pre-oxidant during pilot operations about a decade ago, upstream of alum flocculation.  I don't recall any particular problems with that part of the pilot.  I'm happy to discuss further, or you might be able to find the project report.  This was the project: https://www.iwapublishing.com/books/9781843398097/advanced-water-treatment-estuarine-water-supplies