If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

THE ROLE OF GLUCOSE IN DEVELOPING ENHANCED BIOLOGICAL PHOSPHORUS REMOVAL

$17.50 plus tax (Refund Policy)

Buy Article:

Abstract:

Two parallel sequential batch reactors were used to study the mechanism of developing enhanced biological phosphorus removal (EBPR) by individually feeding glucose or acetate as the major organic substrate. Bacteria taken from the same source were cultured under identical operating conditions simultaneously in the two reactors. Results showed that feeding acetate as the major substrate to the first reactor (reactor A) quickly induced the EBPR performance. However, feeding the second reactor with glucose (reactor G) failed to provide the EBPR performance even though reactor G was operated similarly to reactor A. The operating procedures for reactor G were then modified to provide higher glucose in the feed, longer anaerobic reaction time, shorter aerobic reaction time and limited DO levels. These modified procedures not only induced good EBPR performance in the system, but also enabled the system to maintain very stable operation for more than 2 months. Batch experiments were conducted to compare the metabolic characteristics between the two EBPR systems using acetate or glucose. The results showed that glucose was immediately transported into the bacteria and stored as glycogen and poly-β- hydroxyalkanoate (PHA). It was found that poly-β-hydroxyvalerate (PHV) accounted for most of the accumulated poly-β-hydroxyalkanoate for reactor G as compared to poly-β- hydroxybutyrate (PHB) for reactor A. Polyphosphate hydrolysis and PHA accumulation were lower in reactor G compared to reactor A. For reactor G, this may potentially result in the selection of glycogen as the principal energy source in the anaerobic condition, which explains the poor PO4-P removal efficiency in reactor G before the modified operating procedures were developed and successfully applied.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864700785156307

Publication date: January 1, 2000

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