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A drinking water plant treats its raw surface water with 15 mg FeCl3 per liter. The plant flow is 5.0 MGD. (a) Write a balanced

A drinking water plant treats its raw surface water with 15 mg FeCl3 per liter. The plant flow is 5.0 MGD.

(a) Write a balanced equation for the precipitation of the ferric chloride as Fe(OH) 3 .

(b) What is the stoichiometric alkalinity demand (i.e. mg of CaCO 3 per mg Fe)?

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