Skip to main content

Study on Effective Nitrogen and Phosphor Removal by Carrier-added Activated Sludge Process

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


With the objectives of improving nitrogen removal efficiency and reducing treatment time, we constructed a pilot plant for a two-step feed recycled nitrification/denitrification process with sponge carriers added, and conducted a series of nitrogen and phosphor removal performance tests. Results showed that we achieved our treated water target of 10 mg/L in total nitrogen content by setting carrier packing density at 30 v/v% and hydraulic retention time (HRT) at 6 hr. We replaced one of the anoxic tanks at the pilot plant inlet with an anaerobic tank, to investigate the plant's nitrogen and phosphor removal performance at a carrier packing density of 20 v/v% and HRT of 7 hr. Results showed that we were able to reduce total nitrogen content to our treated water target of 10 mg/L and total phosphor content to our treated water target of 1 mg/L.

Document Type: Research Article


Publication date: January 1, 2004

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 These proceedings are not peer reviewed.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

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
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