Poster (Scientific congresses and symposiums)
STUDY ON THE STRUCTURAL EVOLUTION OF SEWAGE SLUDGE DURING CONVECTIVE DRYING
Li, Jie; Fraikin, Laurent; Salmon, Thierry et al.
2017Eurodrying 2017
 

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Keywords :
sewage sludge; Drying; X-ray tomography; structural characteristics; Image analysis
Abstract :
[en] The structure of the sludge sample continues changing during drying as a result of the shrinkage phenomenon. Then the exchange area becomes smaller and the drying rate decreases. The sludge collected in a wastewater treatment plant (Grosses Battes WWTP, Belgium) was chosen for both lab-scale experiment and pilot-scale experiment. X-ray macrotomography (resolution: 0.36 mm per pixel) and X-ray microtomography (resolution: 41 μm per pixel) were used to explore the structure evolution of the sludge bed and the single extrudate respectively. 2D cross-sections of the sludge bed and the single extrudate were acquired, which supply a convenient way to investigate the evolution of the structure. The results show that the structure of both the sludge bed and the single extrudate distinctly changes during the drying process.
Disciplines :
Chemical engineering
Author, co-author :
Li, Jie;  Université de Liège > Department of Chemical Engineering > Génie chimique - Procédés et développement durable
Fraikin, Laurent ;  Université de Liège > Department of Chemical Engineering > Génie chimique - Procédés et développement durable
Salmon, Thierry ;  Université de Liège > Department of Chemical Engineering > Department of Chemical Engineering
Toye, Dominique  ;  Université de Liège > Department of Chemical Engineering > Génie de la réaction et des réacteurs chimiques
Léonard, Angélique  ;  Université de Liège > Department of Chemical Engineering > Génie chimique - Procédés et développement durable
Language :
English
Title :
STUDY ON THE STRUCTURAL EVOLUTION OF SEWAGE SLUDGE DURING CONVECTIVE DRYING
Alternative titles :
[fr] Étude de l'évolution structural de la boue de STEP durant le séchage convectif
Publication date :
19 June 2017
Event name :
Eurodrying 2017
Event organizer :
ULg - Université de Liège
Event place :
Liège, Belgium
Event date :
du 19 juin 2017 au 21 juin 2017
By request :
Yes
Audience :
International
Name of the research project :
project 2.4596.12
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 26 June 2017

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