About us

THOLANDER, founded in 1986, has developed air pollution control equipment which today represents the state of the art for odour removal. We design and deliver chemical and biological scrubbers, biofilters, activated carbon filters as turnkey solutions.

We are specialized in the removal of organic contaminants and odour removal in areas like waste water treatment, sewage sludge drying, chemical industry, food processing, fertilizer production, biogas production, rendering plants, composting facilities.

Although having started our activities in Germany we are exporting - steadily increasing - especially to South East Asia and Arabia.

Having a worldwide network we are able to offer the best service to our customers by developing solutions adapted to local site conditions. Our services range from consulting to project engineering, installation, commissioning and after-sales-service.

Products and services

We offer odour control plants like chemical and biological gas scrubbers, biofilters and activated carbon filters. We focus on odour removal in various application areas.


  • Biofilter

  • Crossflow Scrubber

  • Counter-current Scrubber

  • Activated Carbon Filter 

  • Biotrickling Filter

Application Areas:

  • Waste water treatment

  • Sewage sludge drying

  • Chemical industry

  • Food processing

  • Rubber industry

  • Fertilizer production

  • Biogas production

  • Tobacco processing

  • Rendering plants

  • Composting facilities

  • Plastic recycling

  • Leather production

WWTP ARA Bern, Switzerland.

ARA Bern is one of the three biggest wastewater treatment plants in Switzerland. In the course of extensive enhancement and refurbishment of this plant between September 2013 and 2015, two Tholander biofilters have been installed in order to eliminate the entire odour emissions. The enhancement of the plant includes cleaning of the waste air from the new sludge drying facility and the liquid way. The plant has been put into operation in September 2015.

Crossflow Scrubber

In horizontal scrubbers the air to be cleaned flows horizontally through the filling material bed and here gets in touch with the trickling scrubbing liquid in a cross-flow. The harmful substances are hereby transferred from the air to the scrubbing liquid.

Activated Carbon Filter

Fine purification for high demand
Our activated carbon filters are simple, efficient and durable. They are used for the cleaning of odorous air from pollutant such as Hydrogen Sulfide (H2S) and VOC. Specially designed for hot climate, our compact filters can be installed in every location for the removal of the malodorous air of wastewater pumping stations and sewage treatment plants.

Tholander Ablufttechnik GmbH
Werkstr. 31
68519 Viernheim

Phone: +49 6204 929230
Fax: +49 6204 9292330
Internet: www.tholander.de
E-mail: Send message

Contact person

Thomas Pfliegensdoerfer
Managing Director
Phone: +49 6204 929230
E-mail: Send message

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