Chlorine and Sulfur Dioxide
Chlorine and Sulfonators – Gas is metered under vacuum, using diaphragms and an orifice.
Evaporators – For high output, liquid changes to gas in a vessel surrounded by a hot water bath.
Injectors – Gas is dissolved in water under pressure by a venturi effect.
Diffusers – Solution from an injector is fed to a submerged perforated pipe.
Contact Chambers – Chlorinated wastewater travels through baffled tanks for a long detention with no back-mixing.
Generators – Very high voltage converts air or oxygen to ozone inside a chamber.
Feeders – Dry or liquid sodium hypochlorite is metered volumetrically into the wastewater flow.
Contactors – Wastewater flows through chambers containing large numbers of long bulbs, closely spaced.