Skip to main content

Comparative Investigation of Parameters for Determining the Dewaterability of Activated Sludge

Buy Article:

$30.00 plus tax (Refund Policy)

Abstract:

This paper compared four parameters evaluating the dewaterability of sludge—capillary suction time (CST), specific resistance to filtration (SRF), bound water content, and dry solids content in the centrifuged sludge cake of the different sludge flocs from seven full-scale wastewater treatment plants. The dry solids content correlated with the normalized CST (R2 = 0.7112, p = 0.003), SRF (R2 = 0.6043, p = 0.011), and the bound water content (R2 = 0.8106, p = 0.001). The normalized CST was correlated significantly with SRF (R2 = 0.9450, p = 0.000) and correlated with the bound water (R2 = 0.5110, p = 0.0417). However, SRF correlated very weakly with the bound water (R2 = 0.3929, p = 0.0448). It is not necessary to use both CST and SRF at the same time to estimate the sludge dewaterability. The normalized CST is feasible because of its affordability, simple equipment, and measurement procedure. However, another parameter indicating the dewatering extent, such as dry solids content in sludge cake, should be applied together to evaluate the dewatering efficiency of the activated sludge.

Keywords: activated sludge; bound water; capillary suction time; dewaterability; dry solids; specific resistance to filtration

Document Type: Research Article

DOI: https://doi.org/10.2175/106143010X12851009156646

Publication date: 2011-07-01

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
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