Air Treatment

Works conducted in wastewater treatment plants and in many industrial buildings and facilities bring about a risk of problems connected with objectionable odours. In past, cumbersome odours from biological processes were liquidated by the use of biological filters. How-ever, operations of such bulky filters are not reliable and they are expensive. At present, there are in place reliable physico-chemical processes using ionisation or photocatalytic re-actions for treatment of tail gases.

The physico-chemical methods are highly efficient and suitable for removal of objectionable odours of gases, such as H2S, NH3, (CH3)2S or VOC (volatile organic compounds).

Photo: Photocatalytic Oxidation

Photocatalytic Oxidation

This process is a combination of photo-oxidation based on the effect of UV radiation and catalytic oxidation. It is mainly used in environments that are burdened with a high quantity of odorous and organic substances that are hard to decompose (oxidize).

Photo: Ionization


The production of active oxygen is a natural process that sterilizes and deodorizes the atmosphere. Fresh and clean air after a thunderstorm is well-known - this is when the atmosphere is cleaned by means of physical-chemical processes, e.g., initiated by lightning.

Photo: AS-BioAir Biofilters

AS-BioAir Biofilters

This line of biofilters is designed for air quantities from 100 to 1,700 m3/h. The biofilter comprises a tank, grill, flanges for the connection of waste air, and water distribution lines for spraying the biofilter media. The biofilter is not equipped with a roof, pre-treatment stage, or air heating. The filter assembly does not include exhaust fans either.