WQTS, Inc.
   
 
Home
space
About WQTS
space
Services & Projects
space
Staff
space
Facilities & Equipment
space
On-Line Models
space
Important Links
space
Publications
space
Presentations
space
Regulatory Documents
space
Employee Opportunities
space
Contact Us
Alameda County Water District, California
Bromate Mitigation Full-Scale Study

 


 

ACWD uses pH suppression via the addition of carbon dioxide to control the formation of bromate during ozonation. While this process keeps the bromate levels below the regulatory standard, it can be problematic during times of high raw water bromide. WQTS worked with ACWD to test an alternative approach to bromate control: adding a small dose of chloramine to the inlet of the ozone contactor. The first phase of the study assessed various parameters such as the order of chemical addition (chlorine first, ammonia first, or both together), pH values, and contact times. Using the results from the first phase, a second phase was conducted over a six-month period to assess the long-term effects on the downstream processes, particularly on the biologically active filters. WQTS developed the testing plans and protocols, provided technical assistance during the tests, analyzed the results, and prepared reports and presentations with recommendations.

 
Copyright WQTS, Inc 2006 | Los Angeles, CA | All rights reserved | info@WQTS.com
Site Design: JM Design