Skip to main content

Belt Filter Press Dewatering Trials with Cambi Thermally Hydrolyzed Biosolids – Evaluation of Critical Performance Criteria

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


A series of belt filter press trials were performed to assess BFP technology as a method for dewatering digested biosolids which had been pretreated by the Cambi Thermal Hydrolysis Process (THP). The THP is a sludge pretreatment process which heats raw sludges to high temperature (150–165 °C ) using steam followed by mesophilic digestion. In this study, two different full scale THP sludges were dewatered on two belt filter presses supplied by two different manufacturers. The digested THP sludges had solids concentrations between about 5-7%. The goal of the project was to evaluate the effect of solids loading rates and polymer dosing on cake solids and capture. The results showed the THP sludges dewatered well using BFPs, with cakes solids of 30% or higher easily achieved along with capture rates greater than 99%. This performance was achieved over a broad solids loading rate with 30% cake solids being achieved at loading rates of up to 1000 kg/m-hr. The study also showed that mixing of the polymer and sludge was a critical parameter for achieving good flocculation and dewatering.

Document Type: Research Article


Publication date: 2011-01-01

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 These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free 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