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heat treatment of sludge [1 record]

Record 1 2015-10-16

English

Subject field(s)
  • Wastewater Treatment
CONT

There are two basic processes for thermal treatment of sludges. One, wet air oxidation, is the flameless oxidation of sludges at temperatures of 450 to 550 °F and pressures of about 1200 psig [pounds per square inch gage] The other type, heat treatment, is similar but carried out at temperatures of 350 to 400 ºF and pressures of 150 to 300 psig. Wet air oxidation reduces the sludge to an ash and heat treatment improves the dewaterability of the sludge. The lower temperature and pressure heat treatment is more widely used than the oxidation process.

OBS

The term "sludge" is considered to be an uncountable noun. However, it is often found in the plural form (sludges), particularly when speaking of different types of sludge.

OBS

heat treatment; heat treatment of sludge: terms standardized by ISO.

Key term(s)
  • heat treatment of sludges
  • sludge heat treatment

French

Domaine(s)
  • Traitement des eaux usées
CONT

Le conditionnement peut être chimique (utilisation de sels métalliques, de polyélectrolytes) ou thermique (cuisson des boues entre 150 et 200 ºC pendant 30 à 60 minutes).

OBS

cuisson des boues : terme normalisé par l'ISO.

Key term(s)
  • cuisson de la boue

Spanish

Campo(s) temático(s)
  • Tratamiento de aguas residuales
DEF

Calentamiento de lodo, a menudo bajo presión, para acondicionarlo de tal modo que se pueda deshidratar más fácilmente mediante un proceso de deshidratación estático o dinámico.

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