Skip to main content

Optimization of Operating Parameters of Intermittent Aeration-Type Activated Sludge Process for Nitrogen Removal: A Simulation-Based Approach

Buy Article:

$22.00 plus tax (Refund Policy)

Biological nitrogen removal is becoming a proven approach to reducing the total nitrogen discharged from wastewater treatment facilities. Simulation performed with intermittent aeration-type activated sludge process using Activated Sludge Model No.¬†1 predicted that up to 90% total nitrogen removal could be attained when the total cycle time and its anoxic phase were balanced adequately. This control limits electron donor and acceptor levels—ammonia-nitrogen (NH4 +-N) in the aerobic phase and nitrate-nitrogen (NO3 -N) in the anoxic phase. Specifically, maximum nitrogen removal appears to be achieved with a 2- to 3-hour cycle time, during which, anoxic conditions were present for 40 to 50% of the time. A 10- to 16-hour hydraulic retention time appears adequate to achieve these results. The solids retention time studied was between 15 and 25¬†days, as this range was deemed sufficient to establish the nitrifying organism population in most applications. Predictions indicate that the conventional activated sludge system can be retrofitted for better nitrogen management at the treatment plants.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: ASM1; activated sludge process; biological nitrogen removal; denitrification; extended aeration; nitrification; process simulation; wastewater treatment

Document Type: Research Article

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
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