News Archive

News Archive

19/06/2012 Exhibition Brazil 6th - 8th of August

Meet us at the ”Fenasan 23th National Exhibition and Environment Service” in São Paulo, Brazil from 6th to 8th August 2012, You will find us at stand S38.


For further information about the exhibition, please go to:


Wastewater Treatment with BIO-BLOK® filter media

A filter media for wastewater treatment of unique quality.

As a result of many years of R&D and extensive experience with polyethylene extrusion techniques, EXPO-NET® Danmark A/S has developed a structured filter media.
The media has proven extremely efficient in biological treatment of domestic sewage, industrial wastewater and process water within the aquaculture field.

The media is made from the environmentally friendly material polyethylene and consists of net tubes, which are welded together to form a square block. The unique surface structure of the many net tubes provides a large accessible surface area for enhanced biological growth on the filter media.

Specific Surface Area for Biological Activity

When bacteria (biological film or bio-film) grow on a level surface, the specific surface area will remain constant even with the establishment of a thicker bio-film.

BIO-BLOK®, however, is designed as a helical structure, based on oval threads with a defined diameter. If these threads become thicker due to growth in the thickness of the bio-film, the specific biologically active surface increases correspondingly. » Read more in our brochure "Why BIO-BLOK".


Wastewater plants with BIO-BLOK® filter media

Link to our official web site about BIO-BLOK® filter media:

Any requirements of information material about BIO-BLOK® filter media, please do not hesitate to contact us.

Best Regards

EXPO-NET Danmark A/S