| http://www.w3.org/ns/prov#value | - In these examples, such treatment (or pre-treatment) with elemental iron may save the cost of disinfection (e. g., through use of less disinfectants and other chemicals) and at the same time reduce the residual disinfectant level and the formation of harmful DBPs associated with use of chlorine, ozone, or other disinfectants.
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