Skip to main content

Simultaneous Optimization of Plants for Nitrogen and Phosphorus Removal, Reuse, Energy and Emissions through a Real Time Operations Controller in Middle-East-Asia and Chesapeake Bay Region of US

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

Abstract:

The challenges of simultaneous optimization of a whole wastewater treatment plant for permit compliance, energy, chemical use and GHG emissions across primary, secondary and tertiary systems, together with solids handling, are significant. A real time whole plant simulator for process control and optimization (Aquifas+) has been developed with a complete GHG module. The simulator uses an enhanced version of IWA ASM2d model for mixed liquor and biofilm. For simulating nitrous oxide and nitric oxide emissions, it includes a four step denitrification process; it includes a two step nitrification process with ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB); it includes an additional three step denitrification process for certain types of AOB. The simulator incorporates mathematical algorithms for inverting a matrix of 150+ equations at higher speeds and accuracy required for real time operations control and optimization as compared to plant design. Its application requires calibration that is conducted over a six month to a one year period. The simulator connects and manages data from SCADA, laboratory and plant inspection systems which it stores efficiently in a database together with the data from simulations. It provides feedback to the operators to help them optimize simultaneously for a combination for compliance, greenhouse gas emissions, energy and chemical use. It does so by generating multiple combinations of feasible operating scenarios at intervals that are customized to the flow, HRT and needs of each plant. The paper includes results of application to plants in North America, Middle-East and Asia.

Keywords: Chemical; Emissions; Energy; GHG; Nitric; Nutrient; Optimization; Oxide; Real; Simultaneous; Time

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864711802721352

Publication date: January 1, 2011

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
wef/wefproc/2011/00002011/00000014/art00053
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

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
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