A&B Test Questions - Florida Rural Water Association

30. What will the dosage rate be for a softening plant using 7O% hydrated lime to apply a limedosage of 45 mg/l to a flow of 3.2 MGD.a. 1816 lbs./db. 1716 lbs./dc. 1616 lbs./dd. 1516 lbs./dMATH APPLICATIONSection31. The following are alkalinity titration results and expected conditions:P = Phenolphthalein AlkalinityT = Total AlkalinityO = Not PresentMATH APPLICATIONSectionTitration Result Bicarbonate Carbonate HydroxideP=0 T 0P < ½ T T – 2P 0P = ½ T 0 0P > ½ T 0 2P –TP = T 0 TWhich is the correct set of data for the Carbonate Conditions?a. O, P, 2P, 2T –2P. Ob. O, 2P, 2P, 2T –2P, Oc. O, 2P, P, 2T –2P, Od. O, 2P, 2P, T –P, Oe. O, 2P, 2P, 2T –2P, O .32. When alkalinity (as CaCO3) is greater than the total hardness and the pH is 9.0 you must ____to soften the water.a. Raise the pH to 9.3b. Reduce only the Carbonatesc. Increase the P alkalinityd. Precipitate noncarbonate (permanent) hardnesse. Precipitate Hydroxides18