Skip to main content

Polymer addition as a solution to Nocardia foaming problems

Buy Article:

$30.00 plus tax (Refund Policy)


In February 1994, The Terminal Island Treatment Plant experienced severe Nocardia foaming problems. Attempts to control foaming, such as lowering the MCRT and foam removal and wasting, met with limited success. In April 1994, a final clarifier cationic polymer injection system was used to combat poor settling activated sludge. After 3 days of polymer addition, foaming was eliminated. The effectiveness of the polymer as a Nocardia foam control agent was verified in subsequent foaming incidents by conducting the full-scale plant tests presented in this paper. Mechanisms are suggested for the action of the polymer in eliminating Nocardia foam. These include interaction with the foam-stabilizing surfactants present in the wastewater, and polymer flocculation of dispersed Nocardia filaments into the activated sludge floc.


Document Type: Research Article


Publication date: January 1, 1997

More about this publication?
  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Information for Advertisers
  • WEF Bookstore
  • ingentaconnect is not responsible for the content or availability of external websites

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
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