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traitement secondaire
chem. aftertreatment
environ. secondary treatment; intermediate level treatment; secondary biological treatment; secondary treatment Stage of the process of waste water treatment: following primary treatment by sedimentation, the second step in most wastewater systems in which biological organisms decompose most of the organic matter into a innocuous, stable form
nat.res. final treatment (sewage); secondary treatment (sewage)
water.res. secondary wastewater treatment; biological treatment
 French thesaurus
traitement secondaire
mil., logist. Traitement complémentaire et ou spécialisé, appliqué dans les formations hospitalières de l’infrastructure. (FRA)
traitement secondaire: 4 phrases in 3 subjects
Environment2
Metallurgy1
Natural resourses and wildlife conservation1