Ion exchange is used to remove water hardness of a well water, which has a total hardness of 450 mg/L as CaCO3. The ion exchanger has leakage hardness of 15 mg/L as CaCO3. The percentage of water that is bypassed and blended is 30%. What is the final water hardness in the finished or treated water most nearly?

A. 105 mg/L as CaCO,
B. 110 mg/L as CaCO,
C. 125 mg/L as CaCO3
D. 150 mg/L as CaCO3

answer:

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answer:

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