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Description: Book cover
THERMAL HYDROLYSIS TO INCREASE SLUDGE BIODEGRADABILITY OR HOW TO TURN MESOPHILIC ANAEROBIC DIGESTION OF BIOLOGICAL SLUDGE INTO AN ATTRACTIVE PROCESS
Abstract
The process BioTHELYS® is a pre-treatment for mesophilic anaerobic digestion by thermal hydrolysis. This process has been operated for almost one year in Saumur (France). The current operating conditions are: a temperature of 160–170°C and a hydraulic retention time of circa 30 minutes with concentrated sludge at 12 to 16% dryness. The main effects observed at Saumur on the hydrolysed sludge are the improvement of biodegradability and better viscosity. VS removal in mesophilic anaerobic digester is improved of circa 40 % compared to conventional VM removal on pure biological sludge. Digested sludge after thermal hydrolysis reach 28–30% dryness on centrifuge and are sanitized and stabilised without any nasty odor.
The process BioTHELYS® is a pre-treatment for mesophilic anaerobic digestion by thermal hydrolysis. This process has been operated for almost one year in Saumur (France). The current operating conditions are: a temperature of 160–170°C and a hydraulic retention time of circa 30 minutes with concentrated sludge at 12 to 16% dryness. The main effects observed at Saumur on the...
Author(s)
Julien ChauzyDidier CretenotAnne BausseronXavier Gokelaere
SourceProceedings of the Water Environment Federation
SubjectSession 68: Thickening and Processes to Improve Digestion
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Jan, 2007
ISSN1938-6478
SICI1938-6478(20070101)2007:13L.5443;1-
DOI10.2175/193864707787969513
Volume / Issue2007 / 13
Content sourceWEFTEC
First / last page(s)5443 - 5450
Copyright2007
Word count131

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