Vapour Capture System
Any combination of hoods and ventilation system that captures or contains organic vapours so they may be directed to an abatement or recovery device.

VDI
Verein Deutscher Ingenieure.

Venturi Scrubbers
Air pollution control devices that use water to remove particulate matter from emissions.

VIS
Visible.

VOCs
Volatile organic compounds.

Volatile Liquids
Liquids, which easily vaporise or evaporate at room temperature.

Volatile
Any substance that evaporates readily.

Volume Reduction
Processing waste materials to decrease the amount of space they occupy, usually by compacting or shredding, incineration or composting.