Skip to main content

True Grit. A Grit Removal Efficiency Investigation at Five Wastewater Treatment Plants

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 Hampton Roads Sanitation District (HRSD) owns and operates thirteen wastewater treatment plants (WWTP) in Southeastern Virginia. Several HRSD WWTPs experience abrasive wear to equipment, reduced operating volume in aeration tanks and digesters, premature equipment repairs and increased maintenance cost due to poor grit removal.

In 2007 and 2008 HRSD embarked upon a grit removal study at five of the WWTPs. The objective of the study was to evaluate the grit removal efficiencies of these plants. The study compared three medium energy forced vortex grit units, a gravity settling detritor, and an aerated grit system. All five plants use hydro cyclones and classifiers. The study concluded the detritor had the highest grit removal efficiency and the angle of the hydro-cyclone is a contributing factor in grit removal efficiency. The study also recommended several equipment and operational strategies to improve grit removal at the other facilities.

Keywords: Grit efficiency; aerated grit; detritor; grit sampling; vortex

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864709793952549

Publication date: January 1, 2009

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 These proceedings are not peer reviewed.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/2009/00002009/00000010/art00066
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