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Titolo:
CHANGE OF PARTICLE STRUCTURE OF SEWAGE SLUDGES DURING MECHANICAL AND BIOLOGICAL PROCESSES WITH REGARD TO THE DEWATERING RESULT
Autore:
NELLENSCHULTE T; KAYSER R;
Indirizzi:
RENTEC GMBH,ENVIRONM TECHNOL,KOLLBERG 5 D-30916 HANNOVER GERMANY TECH UNIV CAROLO WILHELMINA BRAUNSCHWEIG,INST SANIT ENGN D-38106 BRAUNSCHWEIG GERMANY
Titolo Testata:
Water science and technology
fascicolo: 4, volume: 36, anno: 1997,
pagine: 293 - 306
SICI:
0273-1223(1997)36:4<293:COPSOS>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
SIZE;
Keywords:
MECHANICAL SHEAR FORCES; AEROBIC DIGESTION; ANAEROBIC DIGESTION; SLUDGE DEWATERING; SLUDGE-DEWATERING-MODEL; PARTICLE SIZE; DENSITY; SUSPENDED SOLIDS; VOLATILE SUSPENDED SOLIDS; RATIO OF PRIMARY TO ACTIVATED SLUDGE; INTEGRAL PROPERTY PARAMETER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
T. Nellenschulte e R. Kayser, "CHANGE OF PARTICLE STRUCTURE OF SEWAGE SLUDGES DURING MECHANICAL AND BIOLOGICAL PROCESSES WITH REGARD TO THE DEWATERING RESULT", Water science and technology, 36(4), 1997, pp. 293-306

Abstract

Particle size seems to be the most important parameter, to describe the dewatering behaviour and result of sludges. But there are many other parameters, which can influence the dewatering result. The dewatering result of a sludge depends on the type of sludge, the mechanical andbiological process. Out of the numerous parameters to characterize wastewater sludges five were selected, which describe the properties of the particulate matter. These parameters are the suspended solids (SS), the volatile suspended solids (VSS), the density of the particles (rho), the fraction of small particles (fines) and a new parameter, called phi-value, which is the ratio of the mass of waste activated sludgeto the total mass of sludge. The tested sludges were analysed for theZeta Potential, but there could not be found a correlation between this parameter and the dewatering result. Combining the parameters in a model led to an overall sludge parameter, the so-called ''Integral Property Parameter, f(E) ''. A correlation between the f(E)-values and the dewatering results of municipal sludges (n = 49) can be found. A proposal was made to transfer the experimental results to a full scale dewatering process with high performance centrifuges.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 10:51:32