• AWWA ACE54415
Provide PDF Format

Learn More

AWWA ACE54415

  • Biological Activated Carbon: Understanding the Role of Metabolism in Extending Service Life and Improving Process Performance
  • Conference Proceeding by American Water Works Association, 06/01/2001
  • Publisher: AWWA

$12.00$24.00


Continuous-flow granular activated carbon (GAC) bioregeneration experiments were conducted at different empty bed contact times (EBCTs) using mixtures of biodegradable (benzene, toluene) and nonbiodegradable (perchloroethylene, carbon tetrachloride) synthetic organic chemicals (SOCs). The GAC was pre-equilibrated with respect to each combination of SOCs to observe the biggest effect on bioregeneration performance. If no dissolved oxygen limitations occurred in the bioregeneration experiments, the effluent biodegradable SOC concentration decreased over time and then remained low, after which the effluent nonbiodegradable SOC concentration also decreased because of the increased availability of adsorption sites on the GAC. Pre- and post-experimental GAC loadings show a marked decrease in the biodegradable SOC loading as well as an increase in the nonbiodegradable SOC loading. Larger amounts of bioregeneration were found for higher SOC concentrations and longer EBCTs. Bioregeneration ranged from 30 to 45% of the initial loading after 13-14.5 days. These results illustrate an increase in GAC service life for nonbiodegradable SOCs through bioregeneration of GAC containing biodegradable SOCs. Includes 13 references, table, 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