Drying of municipal sewage sludge: from a laboratory scale batch indirect dryer to the paddle dryer



Título del documento: Drying of municipal sewage sludge: from a laboratory scale batch indirect dryer to the paddle dryer
Revista: Brazilian journal of chemical engineering
Base de datos: PERIÓDICA
Número de sistema: 000309026
ISSN: 0104-6632
Autores: 1

2
Instituciones: 1Ecole des Mines d'Albi Carmaux, Laboratoire de Genie des Procedes des Solides Divises, Albi, Tarn. Francia
2Degremont, Direction Recherche et Developpement, Croissy sur Seine. Francia
Año:
Periodo: Jun
Volumen: 22
Número: 2
Paginación: 227-232
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés Among available technologies, disk and paddle dryers are often encountered in France to process municipal sewage sludge but their thermal design is still a question of know how rather than scientific knowledge. From experiments performed on an industrial Naratherm® paddle dryer and the literature, a simple model has been developed. The dryer is divided into two parts depending on the sludge consistency. A constant evaporating flow rate is assumed in the pasty zone whereas its linear decrease with the moisture content is taken into account in the granular zone. To compute this model, some of the sludge properties have to be characterized with a set of laboratory scale experimental techniques. The agreement with the experimental data is good
Disciplinas: Ingeniería
Palabras clave: Ingeniería ambiental,
Lodos residuales,
Secado por contacto,
Cinética de secado,
Escalamiento
Keyword: Engineering,
Environmental engineering,
Sewage sludge,
Contact drying,
Drying kinetics,
Scale up
Texto completo: Texto completo (Ver HTML)