Chemical feed rate for sodium hypochlorite dosing, with optional CT compliance check for Giardia and virus inactivation.
Chlorine demand is the amount of chlorine consumed by the water (by organics, ammonia, etc.) before a residual appears. It is determined by jar testing or site measurement — a typical drinking water demand is 0.5–2.0 mg/L.
Dosing Rate
m³/hr
mg/L
mg/L
%
Bulk NaOCl is typically 10–15% w/v available chlorine.
Include CT compliance check
Using target residual from dosing rate — —Override
mg/L
← Use target residual
m³
mm
m
Per EPA SWTR. Pipes and fully baffled chambers typically use 0.7.