TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ZONE RECOVERY [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2001-03-05

English

Subject field(s)
  • Water Pollution
  • Water Treatment (Water Supply)
CONT

Zones of Water Pollution. Discharge or mixing zone is where pollutants enter the stream or the river. If the waste is dark, it will make the water dark, increase its temperature and subsequently oxygen levels will drop. The rate of discharge should not be stronger than flow of the stream. In zone of degradation oxygen levels drop from BOD (biological/biochemical oxygen demand). Zone of active decomposition is characterized by the following changes: 1) dissolved oxygen (DO) will be at its absolute minimum; 2) odors and gases bubbling up. In the zone of recovery the river will slowly restore its oxygen through aeration process. The anaerobic conditions will disappear. Nitrites will be converted into nitrates and stimulate growth of algae, which will produce oxygen through process of photosynthesis. In zone of clean water oxygen levels are really elevated. And BOD is almost satisfied.

French

Domaine(s)
  • Pollution de l'eau
  • Traitement des eaux
DEF

Zone où la dégradation de la matière organique est presque terminée et où un retour aux conditions aérobies se fait grâce à un nouvel apport d'oxygène.

Spanish

Campo(s) temático(s)
  • Contaminación del agua
  • Tratamiento del agua
DEF

Zona de apariencia más favorable caracterizada por la reaparición gradual de oxígeno disuelto y por la disminución de los sólidos orgánicos.

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Record 2 1983-05-18

English

Subject field(s)
  • Weapon Systems
OBS

As in "rocket impact and recovery area".

Key term(s)
  • recovery zone

French

Domaine(s)
  • Systèmes d'armes
OBS

Comme dans l'expression "zone de récupération des fusées".

Spanish

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