Following completion of Chapter 12, students should be able to:

1. Explain the principles of wastewater disinfection with chlorine.
2. Control the chlorination process to obtain the desired effluent disinfection.
3. Handle chlorine safely.
4. Inspect new chlorination facilities for proper installation.
5. Schedule and conduct chlorination operation and maintenance duties.
6. Recognize factors that indicate the chlorination process is not performing properly, identify the source of the problem, and take corrective action.
7. Conduct your duties in a safe manner.
8. Determine chlorine dosages.
9. Explain chlorine's applications and limitations for uses other than disinfection.
10. Keep records of chlorination operation.

NOTE: This chapter does not contain information on the safe operation and maintenance of gaseous chlorinators or sulfur dioxide dechlorinators. For information on these units, see Operation of Wastewater Treatment Plants, Volume I, Chapter 10, "Disinfection Processes."

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