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When feeding polyphosphate for iron and manganese sequestration, where should it be injected?

April 26, 2017feeding injected iron manganese polyphosphate sequestration

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When feeding polyphosphate for iron and manganese sequestration, where should it be injected?

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Polyphosphate for sequestration of iron and manganese must be located as far upstream from any chlorine feed point as possible to ensure that sufficient time is provided for the reaction to go to completion. It is recommended that a minimum of five feet be provied between these two injection points.