• AWWA ACE65604
Provide PDF Format

Learn More

AWWA ACE65604

  • Investigating the Synergy of an Electrolytic Reactor for Bromide Removal with Downstream Treatment Processes
  • Conference Proceeding by American Water Works Association, 06/01/2007
  • Publisher: AWWA

$12.00$24.00


Meeting the Stage 1/2 Disinfectant/Disinfection Byproduct Rules is a balancing act for most utilities. The CastaicLake Water Agency (Agency) treats imported water from the California Aqueduct (West Branch of State WaterProject) at its two water treatment plants. Although the water settles in two major reservoirs prior to treatment, high Trihalomethane(THM) concentrations have been experienced in the past upon addition of free chlorine for distribution systemresidual. To complicate matters, the presence of bromide ion in the range of 100 to 300 µg/L is problematic for tworeasons that include: ozone is applied at both water treatment plants for preoxidation, which reacts with the bromide ion toform bromate byproduct; and, upon addition of free chlorine, brominated disinfection byproducts (e.g. THMsand HAAs) are formed. These brominated byproducts have been linked to greater health risks.To address this issue, several prototypes of an electrolytic process were tested at the Agency. Promising results wereobtained in terms of bromide, DBP minimization, and microbial inactivation. A Tailored Collaboration projectsponsored by AwwaRF was developed with the Agency to further advance the testing. The main purpose of theproject was to further characterize and develop technology to fully understand its potential for full-scale drinkingwater treatment. Optimal ranges of power amperage and of contact time for bromide removal and DBP formationpotential reduction were identified. The feasibility and synergy of an electrolytic reactor in a conventional watertreatment plant were tested and discussed. Scalability issues were addressed. Includes 23 references, tables, figures.

Related Products

AWWA JAW48088

AWWA JAW48088

Journal AWWA - Water Quality Reports Boost Consumer Confidence..

$15.00 $30.00

AWWA ACE91036

AWWA ACE91036

Desalination of San Francisco Bay Water..

$12.00 $24.00

AWWA WQTC58925

AWWA WQTC58925

Application of Ultrafiltration for Virus Removal Using the LT2ESWTR Regulatory Framework..

$12.00 $24.00

AWWA WQTC62418

AWWA WQTC62418

Characterization of Bromate-Reducing Microorganisms Isolated from Groundwater..

$12.00 $24.00