A high rate bioscrubber
and biofilter system for odour control.
Dekoda is part of TEI's range of compact, environmentally
friendly processes.
Unpleasant odours originating from wastewater treatment
can be effectively treated using the new Dekoda odour
control system. The system consists of two stages: a bioscrubber first removes primary
odour, followed by a biofilter
to provide a polishing stage. In the bioscrubber, a
continuously wetted media with high surface area allows
gases such as hydrogen sulphide to be oxidised by
biological activity. The biofilter uses an organic media
to provide all necessary growth material for bacteria,
and also allows chemical adsorption onto the media's
surface. Depending on the specific application,
bioscrubbers and biofilters can be used separately, or in
series, to provide the best possible reduction in
odourous chemicals.
Dekoda's modular construction offers the full benefits of
easy installation, low cost, low maintenance and design
flexibility. It can be added to existing treatment works
or supplied with new plants. It can also help combat
odours from sewers and assist ventilation of confined
spaces to create safe working environments.
The process has been pioneered by TEI at several sites in
the world over a range of odour control situations.
Typical Dekoda
Performance
Air feed flowrate 600 to 1000 m3/h
Hydrogen Sulphide feed levels >50 ppm
Typical removal rate >95%
Footprint: single stage 3m x 5m
two stage 3m x 8m
