A system is described for producing small uniform pellets of predetermined size which are substantially free of fines from mechanically dewatered sewage sludge and a means for controlling odor from the production of said pellets. The system includes a process and apparatus for mixing the dewatered sludge...http://www.google.com.au/patents/US4860671?utm_source=gb-gplus-sharePatent US4860671 - Odor control for a sludge treatment process
