AWWA WQTC65834

The objective of this powerpoint presentation was to determine if electrolysis and volatilization can be aneffective technique for reducing the concentration ofbromide in California State Project Water resulting inreduced formation of bromate when ozonated. The hypothesis presented is thatbromide can be electrolyzed to bromine and brominecan be volatilized at low pH (<3.5) and air strippingwith fine gas, producing a finished water with a lowerbromide concentration and less potential to formbromate when ozonated. Reasons for removing bromide are listed, along with current bromide treatments. An overview of electrolysis and volatilization is provided that includes: electrolysis and hydrolysis; electrolysis reactor; analytical techniques; Experiment 1 - Bromide Removal as Impacted byFlow and Current; Experiment 2 - Bromide Removal by Depth; and, Experiment 3 - Electrolysis and Ozonation, A, B and C. Overall conclusions were that:the oxidation and volatilization of bromide doeslower the concentration of bromide in drinkingwaters;removing bromide from water prior to ozonationcan reduce the formation of bromate under theright conditions; and,the DPD-FAS titration technique for Cl₂ doesappear to be adequate for electrolyzed waters. Includes tables, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2007

Number of Pages:

43

File Size:

1 file , 3.4 MB