Scrubbers

One-Stage Scrubbers

One-stage scrubbers are used, for example, to wash out high ammonia concentrations from waste air thus reducing biofilter depuration burden.

Two-Stage Scrubbers

Two-stage scrubbers are used, for example, to wash out hydrogen sulphide from waste air. After the chemical washing, waste air is then neutralized.

Three-Stage Scrubbers

Three-stage scrubbers are able to wash out acid as well as alkalised substances contained in waste air.

Substances which cannot be washed out chemically can be degraded by a biofilter installed after the scrubber.