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Filtration for improved disinfection

Filtration for improved disinfection


I'm looking for a good publication/study which gives general guidelines for improved disinfection performance by upstream filtration.
For example Metcalf 5th edition states:

As additional chlorine is added beyond some limiting value, a log linear reduction in the number of organisms is observed with increased chlorine dosages. If particles (typically greater than 20microns) are present, the disinfection curve starts to diverge from the log linear form and a tailing region is observed due to particle shielding of the microorganisms. The tailing region is of importance as more restrictive standards are to be achieved (e.g., 23 MPN/100 mL)

I can't find any references for this.

RE: Filtration for improved disinfection

Metcalf and Eddy 5th Edition is the reference.

"Any water can be made potable if you filter it through enough money"

RE: Filtration for improved disinfection

and the reference at the end of the chapter is simply: Ekster, A. (2001) Personal communication

Which leads me nowhere and is not very convincing.

RE: Filtration for improved disinfection

Why do you need the reference?

"Any water can be made potable if you filter it through enough money"

RE: Filtration for improved disinfection

Contact Alex Ekster at

What is presented in Metcalf & Eddy is a general guideline. If you are required to make a process guarantee, bench scale laboratory work will probably be necessary to determine the parameters of the water that you are working with.

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