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1. A commercijal laundry is consdiering constucing an ion exchange process to remove hardness from water used in laundering oerpations. The laundry uses 1000 m3/d of city water with Ca2+ at 4.5 meq/L and Mg2+ at 2 meq/L. Their goal is to reduce total hardness (TH) to 1 meq/L. The softening resin has a TH capacity of 60 kg-TH/m of media with a recommended hydraulic loading rate of 0.4 m/(m2 min). Renegeration can be accomplihsed using 100 kg NaCl per m of ion exchange media in a 15% solution at a hydraulic loading rate of 0.04 m3/(m min). The exchanger tanks available to the laundrey have a diamter of 1 m. a. What is the total bypass-water flow rate (m/d)? b. What is the total daily resin volume required to soften the water (m3/d)? c. How many exchanger tanks are required for a one-day operation cycle? d. What is the resin bed depth (m) in each exchanger tank? e. What is the daily volume of NaCl regenation solution used per tank (m3/d)? f. What is the time period required for resin regeneration in any single tank (min)