Advanced air filtration

Pure air for industrial applications

Nodora is a Mellifiq brand developing air filters. The production is located in Sweden and the products are tailor-made to fit the customers needs.

About activated carbon

Filters with activated carbon are the ideal choice for removing airborne pollutants in most industrial applications. Due to their very high surface area – up to 1,500 m2/g, the exhaust air is purified to the highest degree possible. All common industrial pollutants – like H2S, ammonia and VOC – are removed without traces or byproduct. We offer a wide range of activated carbon filters suitable for all ventilation systems and all industrial airapplications. Our filters are also specially designed to fit a broad range of flows, with low pressure drop, to process the highest degree of pollutant concentrations and to have the most efficient maintenance to cost ratio.

Ventilation filters

Low pressure drops are especially crucial in ventilation systems.

Graph of Nodora pressure drop

Pressure drops for standard filters compared to Nodora


Our Nodora high-performance cassette filters are designed to minimize pressure drops without losing performance thanks to our unique proprietary cassette-based design.

Nodora cassette based design

Cassette-based design in a Nodora ADS B-series.


Nodora is designed as a final air treatment step for odor reduction and H2S removal. The flow pattern is optimized to maximize the efficiency and minimize the pressure drop.

Nodora air treatment solution

 Nodora is used for odor reduction and H2S removal.

ProductAir flow (m3/h)∆P (PA)ApplicationWeight active material (kg)Size W x D x H (mm)
Nodora ADS A-series500–5,40050–150Odor control5201,160 x 760 x 2,070
Nodora ADS B-series1,000–10,80050–150Odor control10401,160 x 1,520 x 2,070
Nodora CAT A-series200–2,40050–150H2S removal6701,160 x 760 x 2,070
Nodora CAT B-series500–4,80050–150H2S removal13401,160 x 1,520 x 2,070

Custom-made filters

We can also develop custom-made filters for applications like mercury, heavy metals or acid gases removal. Contact us for more information!

Industrial filters

Our industrial filters carefully selected and specially designed for odor control, high efficiency and low pressure drop.

ProductAir flow (m3/h)Pressure drop (PA)Carbon weight (kg)Connection Ø (mm)Size WxDxH (mm)
Airkarb 700200–350300–65075125900 x 850 x 1,400
Airkarb 1000350–600300–6501501601,200 x 1,100 x 1,500
Airkarb 1200600–1,000350–7002252501,500 x 1,400 x 1,600
Airkarb 14001,000–1,500400–7003002501,700 x 1,400 x 1,700
Airkarb 16001,500–2,000450–7004253152,000 x 1,700 x 1,900
Airkarb 18002,000–3,000450–9005504002,300 x 1,900 x 2,100
Airkarb 22003,000–4,000450–7509004002,600 x 2,400 x 2,200
Airkarb 28004,000–7,000400–9001,2505003,100 x 2,800 x 2,300
Airkarb 34007,000–10,000500-8502,0006303,800 x 3,500 x 2,500
Airkarb 400010,000–15,000500–9002,5008004,300 x 4,000 x 2,500

Reference projects

Wastewater treatment plant

We provided a complete H2S removal system for the wastewater treatment plant of the city of Leksand, Sweden. With the combination of ozone treatment and Nodora CAT, 100% of the H2S was removed together with the remaining odors.

Read more in our reference project.


Biogas plant in Finland

The Finnish biogas plant owned by Biopower OY decided to not risk having complaints because of odor emissions. With the installation of Nodora ADS, this result was achieved flawlessly.

Read more in our reference project.


Odor and H2S removal

We delivered a complete system combining, ozone, Nodora CAT and Nodora ADS for one of the toughest fermentation processes in the food industry. Odors and H2S values up to 6000 ppm were removed.

Our industrial applications

Our industrial filters are used in a wide range of applications. We carefully select the best suited high-performance carbon, or catalytic media, for each application. Eg. when H2S is the cause of the problem, we select specially prepared impregnated activated carbon, while we use our tailor-made catalytic material (RubiCat™) for desulfurization in biogas applications.

Read more about filtration media.

Blue Nodora X 3000

Odor controlEcosorb, SC40, OCM-4E, OCM-4C, COL-A50Odor elimination
H2S removalSTIX, RST, Sulfusorb 10, OCM-Sulfcat, KAL-3000Odor elimination
DesulfurizationOCM-RubiCatLess than 10 ppm H2S out

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