Engineering, 14.04.2020 20:40 hebiancao

Determine the lime and soda ash dose, in mg/L as CaCO3, to soften the following water to a final hardness of 80.0 mg/L as as CaCO3. If the price of lime, purchased as CaO is $100.00 per megagram (Mg), and the price of soda ash, purchased as Na2CO3 is $200.00 per Mg, what is the annual chemical cost required to treat 0.5m^3 /s of this water?
Compound Concentration (mg/L as CaCO3)
CO2 22.0
Ca^2+ 200.0
Mg^2+ 100.0
HCO3^- 150.0

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Determine the lime and soda ash dose, in mg/L as CaCO3, to soften the following water to a final har...

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