Skip to main content

Simultaneous Nitrification-Denitrification and Phosphorous Removal (SNDPR) in Continuously Fed and Aerated Membrane Bioreactor

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


Conventional membrane bioreactors (MBR) used in municipal wastewater treatment require additional processes to remove nutrients. Previous researches have proposed low dissolved oxygen (DO) concentration or intermittent aeration in order to provide two or more of the different environmental conditions in a tank for nitrogen or simultaneous nitrogen and phosphorous removal. This paper will, for the first time, demonstrate the achievability of simultaneous nitrogen and phosphorous removal without cycling of air and/or feed in MBR system for the treatment of a synthetic medium strength municipal wastewater. This was achieved through operating under low dissolved oxygen (DO) and a high biomass concentration. More than 98% of influent COD was removed. Total nitrogen removal was 55%, out of which 75% was through simultaneous nitrification-denitrification (SND) and 25% through assimilation into the biomass. Surprisingly, more than 98% phosphorous was removed and microbiological analysis showed the presence of PAOs in the activated sludge. The operating MLSS was between 16-23 g/L. The optimum DO found to be 0.7-0.8 mg/L.

Document Type: Research Article


Publication date: 2004-01-01

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 These proceedings are not peer reviewed.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 ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree 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