OCO
Odour control

• activated carbon: the Azurair A
• AZURAIR A
• AZURAIR B
• AZURAIR C
• biological: the Azurair B
• chemical analysis
• minimising odour emissions from wastewater treatment plants
• odour measurement
• olfactometric analysis
• sources of odour-emitting compounds
• typical results
• using ozone
• wash tower: the Azurair C

Oil production
Oil removal (from wastewater)
Oil
Oilfield water
Oils and hydrocarbons

• analysis
• pollution (by oils and hydrocarbons)
• removal of -

Olfactometric analysis
Ore refining (industrial)
Osmotic pressure
Output from openings and nozzles
OVH (French)
OXAZUR
Oxidability
Oxidation

• advanced oxidation
• cascade
• colour
• homolytic oxidation
• of cyanides
• oxidation reduction potential
• pre-oxidation
• redox couple
• spraying
• stability diagram (pH-ORP)
• TOCCATA
• trickling through contact media
• wet oxidation

Oxidation by-products
Oxidation catalysis
Oxidation reduction potential (or redox)

• depending on pH
• standard for different redox couples