Skip to main content

Efficient Biodestruction of Wastewater-Blended, Oxidant-Laden Residual Streams

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

A disadvantage of using separation-based oxidant (i.e., perchlorate, nitrate, bromate) treatment technologies (e.g. ion exchange or membranes) is that they produce an oxidant-laden concentrate that must be disposed or further treated. “Conventional” biological processes can be used to treat oxidant residuals but typically require a dedicated deoxygenation step, inoculation with exogenous salt-tolerant bacteria, long residence times due to high solution salinities, and the addition of a costly exogenous substrate such as ethanol. This paper describes the development of a novel approach for treating oxidant-laden residuals by blending them with scalped municipal wastewater followed by treatment in a fixed-bed (FXB) bioreactor. A six-month pilot study investigating the application of this treatment concept to perchlorate-laden electrodialysis reversal (EDR) concentrate demonstrated that perchlorate removal to below detection can be achieved and sustained in a FXB bioreactor using blend ratios around 0.5 (wastewater:EDR concentrate) and empty-bed contact times (EBCTs) as low as 10 minutes, that the process is robust with respect to system upsets, and that granular activated carbon (GAC) with an effective size of approximately 2 mm was optimal as a biogrowth support medium.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2006-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more