A&B Test Questions - Florida Rural Water Association

5. Your feed rate scale for Flocculation chemicals is in pre-set (with a range of 100%) and isset at a maximum feed rate of 15%. You have determined that the best feed rate for theFlocculator is 3 GPH. What should the feeder be set on?a. 5%b. 12%c. 20%d. 30%e. 45%MATH APPLICATIONSECTION6. You suspect a problem with your chemical feeder. From the following data, determine theproper chemical feed rate.Starting Level of container pumped fromLevel of chemical after pumpingFeed Time= 1000 ml= 800 ml= 30 sec.a. 1.25 ml/minb. 26.7 ml/minc. 200 ml/mind. 260.7 ml/mine. 1600 ml/minMATH APPLICATIONSECTION7. The inorganic compounds (i.e. iron) are effectively removed from your raw water usingaeration. Tests indicate an increasing taste and odor problem due to volatile organiccompounds. Which action below would be best for these circumstances?a. Reduce the aeration rateb. Increase detention period to allow more organics to burn offc. Increase blower pressured. Add a reducing agente. Add an oxidizing agent42