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Stabilisation of dewatered domestic sewage sludge by lime addition as raw material for the cement industry: understanding process and reactor performance

Author
Valderrama, C.; Granados, R.; Cortina, J.
Type of activity
Journal article
Journal
Chemical engineering journal
Date of publication
2013-10
Volume
232
First page
458
Last page
467
DOI
https://doi.org/10.1016/j.cej.2013.07.104 Open in new window
URL
http://www.sciencedirect.com/science/article/pii/S1385894713010231 Open in new window
Abstract
This paper describes the performance and feasibility of the domestic dewatered sewage sludge (DDSS) stabilised with lime as raw material for the cement industry. The stabilisation process uses a screw-based plug reactor to provide mixing conditions suitable to reduce the water content of the sludge to level of 10%a w/w by taking advantage of the exothermic reaction of the hydration of lime to form portlandite, which favours the evaporation of water. The high alkalinity provided by the added lime...
Keywords
Biomass mineralisation, Energy and mass balances, Mixing reactor, Process description, Sludge stabilisation with lime, Stabilised sludge
Group of research
CRnE - Barcelona Research Center in Multiscale Science and Engineering
R2EM - Resource Recovery and Environmental Management

Participants