A&B Test Questions - Florida Rural Water Association

5: How many kilograms can be removed by all of the softeners ?A: 111, 583 kgrB: 223, 164 kgrC: 446, 331 kgrD: 62. 643 kgrMATH APPLICATIONSection6: If all the ion exchange units were started at the same time and operated until their exchangewas exhausted, how many gallons would have been softened to near zero hardness?A: 3,719, 433 galsB: 2,088,100 galsC: 7, 438. 800 galsD: 14, 877, 666 galsMATH APPLICATIONSection7. In the question above, how many hours and minutes would have elapsed?A: 49 hrs. and 32 minB: 41 hrs. and 19 min.C: 12 hrs. and 23 mm.D: 24 hrs. and 46 min.MATH APPLICATIONSection8: How many pounds of salt are required to regenerate each softener ?A: 78, 532 lbsB : 44, 633 lbsC: 25, 057 lbsD: 278, 958 lbsMATH APPLICATIONSection9: How many gallons of saturated brine are required for each regeneration?A: 21, 407B: 85, 629C: 11, 989D: 133. 473MATH APPLICATIONSection10. If the finished water from an ion exchange unit has a salty taste, a probable cause for theproblem may be:A: too much lime was fedB: the rinse stage was unsuccessfulC: too much zeolite was applied to the mediaD: too much chlorine was present11. The primary cause of resin breakdown in ion exchange softening is:A: oxidation by permanganateB: excessive backwashingC: iron foulingD: the presence of high chlorine residuals21