Skip to main content

Hydrocycloning Influent, Mixed Liquor or Return Activated Sludge for Best Grit Removal and Sludge Production Reduction

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:

This paper explores grit removal from influent and activated sludge as a means to reduce sludge production of biological wastewater treatment plants (WWTPs). Experiments were carried out on a laboratory-scale (13 mm) hydrocyclone on sludge from eight WWTPs in Quebec (Canada) with different industrial loadings and combinations of preliminary and primary treatment. Full-scale hydrocycloning (50 mm) experiments were performed on sludge from a membrane bioreactor pilot plant treating municipal wastewater in Quebec and also at the Morongo Cannibal™ WWTP (California, USA). Results indicated that hydrocyclone grit separation efficiency decreased with increasing feed solids concentration. Grit separation efficiency of the 13 mm and 50 mm hydrocyclones seemed to be comparable. The best grit removal strategy (grit chamber at the influent vs hydrocycloning sludge vs a combination of the two processes) should be evaluated on a case-by-case basis as it will depend on grit characteristics and an economic analysis, among other factors.

Keywords: activated sludge; grit removal; hydrocyclone; preliminary treatment; sludge production reduction

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864711802713054

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 These proceedings are not peer reviewed.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/2011/00002011/00000015/art00058
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