Continuing the design of the ion exchange column for the Village of Calcite, provide the following for the two-bed system that will operate in parallel with staggered regeneration cycles:
a. Surface loading rate (m3/d · m2 )
b. Height and diameter of the resin bed
c. Empty bed contact time (min)
d. Service flow rate (m3/d · m3 )
e. Height and diameter of the column vessel
f. Pressure drop
Assume the density of the resin is 830 kg/m3 (moist), a resin height less than or equal to 4.0 m, and that 50% expansion of the bed will be used during backwash. The pressure drop across the bed should be less than 140 kPa.
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