Comparison of COD and Toxicity Removal during Activated Sludge and MBBR Treatment of Kraft Pulp Mill Effluent

$17.50 plus tax (Refund Policy)

Buy Article:

Abstract:

This study compared treatment of bleached eucalypt kraft pulp mill effluent in bench-scale activated sludge and moving bed biofilm reactors (MBBR) operated in parallel at hydraulic retention times (HRTs) of 12 and 24 hours and operated in series (activated sludge followed by MBBR) at HRTs of 12 hours each. COD, recalcitrant compound (lipophilic extractives and lignin), and toxicity removal efficiencies were compared in the reactors operated under different conditions. Results indicated high COD removal efficiency in both systems under the different configurations tested with no significant differences found between treatments, except for a greater proportion of high molar mass COD remaining after treatment at a 12 hour HRT. The MBBR presented higher extractives removal efficiency than the activated sludge system and greater solids retention under stress conditions. Treatment by either system reduced or eliminated chronic toxicity to Ceriodaphnia dubia after adequate adaptation of biosolids to the effluent.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864712811708293

Publication date: January 1, 2012

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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