Life Cycle Assessment (LCA) Applied to the Design of an Innovative Drying Process for Sewage Sludge

Abstract : Most adverse environmental impacts result from design decisions made long before manufacturing or usage. In order to prevent this situation, several authors have proposed the application of life cycle assessment (LCA) at the very first phases of the design of a process, a product or a service. The study in this paper presents an innovative thermal drying process for sewage sludge called fry-drying, in which dewatered sludge is directly contacted in the dryer with hot recycled cooking oils (RCO) as the heat medium. Considering the practical difficulties for the disposal of these two wastes, fry-drying presents a potentially convenient method for their combined elimination by incineration of the final fry-dried sludge. An analytical comparison between a conventional drying process and the new proposed fry-drying process is reported, with reference to some environmental impact categories. The results of this study, applied at the earliest stages of the design of the process, assist evaluation of the feasibility of such system compared to a current disposal process for the drying and incineration of sewage sludge.
Complete list of metadatas

Cited literature [23 references]  Display  Hide  Download

https://hal-mines-albi.archives-ouvertes.fr/hal-01165254
Contributor : Patricia Arlabosse <>
Submitted on : Thursday, June 18, 2015 - 4:46:52 PM
Last modification on : Wednesday, October 16, 2019 - 10:40:02 AM
Long-term archiving on : Tuesday, September 15, 2015 - 7:15:14 PM

File

Paper_HAL.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

C.A. Peregrina, Didier Lecomte, Patricia Arlabosse, V. Rudolph. Life Cycle Assessment (LCA) Applied to the Design of an Innovative Drying Process for Sewage Sludge. Process Safety and Environmental Protection, Elsevier, 2006, 84 (4), pp.270-279. ⟨10.1205/psep.05169⟩. ⟨hal-01165254⟩

Share

Metrics

Record views

266

Files downloads

277