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A source of water supply water with a Cationic content ( and Anionic content also ) of 123.75 ppm of CaCO3, and a Silica content ( SiO2 ) of 55.6 ppm of CaCO3.
The water will be treated using a demineralizer that has two ionic exchange resins : the Anionic and the Cationic ones. The first has a capacity of 11.25 Kgrains per cubic feet of resin. The second one has a capacity of 13.67 Kgrains per cubic feet
We need an operational time of 12 hours before resins exhaustion, with a service water flow of 1200 GPM.
Calculate the amount of both resins ( on cubic feet ) for this service conditions.
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The expert examines the design of demineralizer for the boiler water treatments. The amount of both resins for the service conditions are determined.
Please, see attachment for solution.
The Anionic and cationic load to resins depends on the total flow of water passing both vessels. This flow is calculated as :
Total water volume = 1200 Gal/min * 12 h * 60 min / h = 864000 galons