Brown and Caldwell Home Page
Technical Papers RECENT PAPERS    ALL PAPERS

Brown and Caldwell engineers and scientists are technical and thought leaders in the environmental sector. Meet the people who have been advancing innovation for more than 70 years.
Author      Title/Abstract      


Considerations in Using Thermal Hydrolysis for Pre-Digestion Processing in North America
Author: Perry Schafer, Gary Newman, Steve Krugel, Tracy Stigers, Tom Chapman, Chris Muller, Philip Braswell
Date: 4/912
Preprint, Residuals and Biosolids 2012, March 25-28, 2012, Raleigh, NC

Over the last 15 years, major advances have been made in practical application of thermal hydrolysis (TH) as a pre-anaerobic digestion process to provide improved digestion performance and greater methane production, as well as to achieve better final dewatering performance and improved final biosolids cake product characteristics. Currently, there are at least two companies promoting and implementing the process, world-wide, with interest by others in examining the process for potential development and use. Several wastewater agencies in North America have examined the technology for potential use because of published successes overseas, availability of process and project information, ability to achieve Class A biosolids, and other factors including the recent decisions by the DC Water and Sewer Authority (DC Water) to construct the system at very large-scale (400 dry metric tonnes/day of capacity.) Wastewater agencies are anxious to learn about the advantages and benefits of the technology, but also about any disadvantages or operational implications that may be associated with using thermal hydrolysis pretreatment prior to anaerobic digestion.

This library contains published materials for which copyrights may be owned by entities other than Brown and Caldwell, but which are stored for limited uses by BC employees. Technical papers authored by BC employees generally may be printed and shared electronically with clients and prospective clients outside BC. Technical papers cannot be sold, and technical papers shared outside BC must have proper attribution of the original sponsoring organization or conference where the paper was presented. This attribution is embedded in each technical paper file when it is loaded into this library. Published articles from magazines or trade journals which are stored in this library are FOR INTERNAL USE ONLY and SHOULD NOT be distributed to clients or others outside BC, without express permission of the copyright owner. For questions regarding copyrights associated with any document in this library, or questions regarding copyrights in general, contact the Legal Department.