Control of THMs formation in drinking water: importance of operational parameters

摘要

Using an automated 20 liter semi-continuous small pilot, experiments were conducted on removal of humic acid by ozone in water. Characteristics of raw water were varied in terms of pH, alkalinity and humic acid content. Ozone dosage was also varied. Results indicate that the time at which oxido-reduction potential begins to increase (oxido-reduction potential increase time. OPRIT) provides some valuable information on behavior of ozone in the reactor and could probably used as a control parameter in industrial installations.