Environment Statistics  
History and current activities
Brochure on Environment Statistics
Methodology

Towards IRWS

FDES

Concepts and methods in Environment Statistics

Glossary
  Working Papers
Data

UNSD environmental indicators

  Country Snapshots
  Country Files
(Limited access)
  Questionnaires
Technical cooperation

ECOWAS project

ESCWA project
 

CARICOM project

 

Workshops

Coordination

Intersecretariat Working Group on Environment Statistics

Work Session on Water Statistics

Reports to the Statistical Commission
ENVSTATS newsletters
   
Useful links
  National data sources
  International and regional data sources
  Environmental accounting
   
Contact us

         Environment Glossary



Back
Term
 Aeration
Description addition of air to water resulting in a rise of its dissolved oxygen level. Specifically, aeration is applied in waste water treatment. In that case, aeration is used to maintain an appropriate oxygen concentration in the waste water in order to promote biological oxidation and to keep the activated sludge in suspension.