We have not met yet but I am part of the Renal Sales Team at Veolia Water.
We use Sodium hypochlorite (bleach) when we disinfect softeners. Carbon beds can be disinfected with chlorine, we don't recommend using peroxide or peracetic acid as can have a reaction to the carbon bed.
Any of you take microbiological samples after carbon filters?
Apart from preventive maintenance, what level of microbiological contamination should we consider as mandatory for carry out a disinfection of the pre-treatment?