Skip to main content

Factors affecting dispersion of activated sludge flocs

Buy Article:

$30.00 plus tax (Refund Policy)



The parameters of the power-law and log-normal floc size distribution models were correlated with the values of process operation factors for five, full-scale conventional activated sludge wastewater plants. Stepwise regression was applied to investigate the combined effects of these factors and the interaction of selected factors. Factors affecting the frequency of occurrence of primary particles were examined by logistic regression and stepwise regression. It was found that the process operation factors affect the floc size distribution in a complex way, but sludge loading was the most important and statistically significant factor influencing the frequency of occurrence of primary particles (<2 μm) in mixed liquor.

Keywords: activated sludge; correlation statistics; floc size; models; primary particles; process operation factors

Document Type: Research Article


Publication date: 1993-05-01

More about this publication?
  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    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
  • 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
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