Skip to main content

Belt Filter Press Produces Similar Performance to Centrifugation: Side-By-Side Dewatering Results from three Anaerobic Digested Biosolids

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


The recent Biosolids Management Plant conducted by the Ocean County Utilities Authority (OCUA) recommended side-by-side pilot testing of belt filter press and centrifuge technology to select the best technology to dewater their anaerobically digested biosolids from the authority three plants. Initially, screening of available vendors for providing dewatering technologies and conducting the side-by-side piloting were conducted and two vendors were selected: 0.6 meter Wiklepress of Ashbrook and skid mounted ALDEC 406 centrifuge of Alfa Laval. A detailed pilot testing protocol for both technologies and guidance support documents including all necessary support from both vendors and the OCUA staff to achieve successful testing were finalized prior to conducting the testing.

The testing protocol called for one week testing at each plant. The testing protocol was consistent for all plants. Side-by-side testing commenced on May 7th and ended on May 25th, 2007. The performance of each technology was measured through achieving consistent cake solids at the end of testing at each facility with a certain polymer dose and percent solids recovery higher than 95%. Based on the obtained cake solids with the used polymer dose, and the electricity consumed for dewatering during the consistent performance testing, the operating costs for each technology were estimated.

The testing showed that the belt filter press technology produced similar performance to the centrifuge at all three plants and in some cases using lower polymer doses to achieve the same cake dryness. Based on estimated operating costs, BFP technology was recommended to dewatering biosolids at all three facilities.

Document Type: Research Article


Publication date: 2008-01-01

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 These proceedings are not peer reviewed.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