Skip to main content

EFFECT OF BIOAUGMENTATION IN STRESSED WASTEWATER TREATMENT SYSTEMS

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial

Abstract:

Achieving efficient and reliable nitrification has become increasingly important to the wastewater industry. Excessive biomass losses due to washouts have adverse effects on nitrification and can slower the already slow growth rates of nitrifiers. In such situation, bioaugmentation with nitrifying bacteria can be used to help recovery and maintenance of nitrification. Bioaugmentation is the process of adding selected strains of microorganisms with known capabilities to wastewater treatment units in order to improve removal efficiencies of organic pollutants. In this study, laboratory scale CSTRs were operated to assess the bioaugmentation with nitrifying bacteria. High stress condition for the nitrifiers was created by increasing the hydraulic loading rate. A bioaugmented CSTR was compared to an uninoculated control. To predict the key trends and to illustrate the effect of addition of biomass on process performance, mathematical modeling was used. Intensive sampling was carried out during the transition period. Both experimental and modeling trends indicated that the maximum effects of a single bioaugmentation was dependent on the dose and the performance decreased as bioaugmented nitrifiers washout confirming the need for maintenance doses. The results suggests a lag period before the bioaugmentation product became completely effective.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864700784546071

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 These proceedings are not peer reviewed.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
  • Ingenta Connect is not responsible for the content or availability of external websites
wef/wefproc/2000/00002000/00000009/art00022
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

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
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