The Non-Chemical Alternative

A unique biological process for air pollution control

Bacteria are nature’s most effective cleaners. AZZURO found the optimal method to utilize them with astonishing results.

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  • Our Biology
  • Our Technology
  • Our Media

Nature’s best cleaners

Meet Acidithiobacillus Thiooxidans.

This bacterium, together with many others, forms an extremely effective natural processor, which purifies waste air of odors or hazardous components. Our microbial technology was developed over years of collaboration with major US and European universities. The result is an efficient and rugged biological system that naturally treats a variety of emissions for years without degraded performance

Key Benefits

  • Major developments done in cooperation with world-class universities
  • Extensive process knowledge grants us the best selection of biology
  • Over 20 years of biological development transformed lab and field cultures into “super bugs”
  • Constant process control optimizations allow bacteria to function under extreme conditions

High Performance Bioreactors

In over 20 years that we have been active in biological emission control, we always have found ways to improve our technology and make our products more economical.

A list of patents is proof of our innovative power. The heart of the AZZURO solution are our two high-performance bioreactors, TORRENTA for aerobe applications and SULFATECH for anaerobe applications. However, we have also expanded our product suite to include a hybrid bio-chemical reactor for ammonia treatment (AMOTEK), an activated carbon filter (AZZORBO), and a compact combination system for limited spaces (PURETTA).

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Key Benefits

  • Stackable color-coded media creates an optimal void volume to biological area ratio
  • Modular design keeps our bioreactors fast and easily configurable
  • Zero maintenance solution does not degrade performance for years
  • Meets all requirements and regulations easily, improving LEED scores
  • Short ROI period makes for an economically sound investment

The best performing media on the market

Available as part of our High-Performing Bioreactors or a separate item to anyone looking to replace your current media, AZZURO’s Color-Coded Spacious Wire Pac Media is fully synthetic, does not deteriorate or clog, and is not hindered by fouling. Each color layer represents a different material, which can be combined in endless “recipes” depending on your emission needs. This unique approach is only offered by AZZURO.

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Key Benefits

  • Nearly 600 systems in operation worldwide with no system failures
  • Up to 20-year media warranty
  • Highly effective removal of H2S, SO2, CS2, VOC’s and others
  • Fully customizable to meet your specific needs
  • Available as part of our bioreactors or a separate item
  • Optimizes real gas contact time with the biologically available area

Our Products

  • Amotek

    AMOTEK, specially designed to remove ammonia, is the world’s first hybrid bio-chemical reactor that doesn’t require chemical dosing - suitable for the agricultural sector as well as paper mills, composting facilities and other industries.

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  • Azzorbo

    Activated carbon filter product line, suited to function as a polishing filter or as a full-blown stand-alone system. Unique in design, AZZORBO is the only carbon filter that’s fully accessible from the top.

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  • Puretta

    A compact combination system that combines the best use of biology and activated carbon to deodorize small air flows. Specially designed for limited spaces.

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  • Sulfatech

    An anaerobic gas scrubber, supplemented with an aerobic regeneration unit. SULFATECH is used to sweeten sour gas in oil refineries and remove harmful sulfur emissions from gas in “waste to energy” projects fully biologically.

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  • Torrenta

    A truly unique counterflow trickling system for a wide variety of air cleaning solutions - the system guarantees a stunning removal result year after year, without media replacement.

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Our Solutions

  • Agro, Food & Beverage

    AZZURO Air Pollution Control Systems are the perfect match for people, product, process and budget – for processing plants, canning fruits and vegetables plants, fruit juice, and dairy and potato products plants.

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  • Wastewater Treatment

    The first to introduce a solution to the WwTPs in the 1990s, today’s biological air pollution control solutions keep municipal water odor-free.

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  • Cellulose & Pulp Processing

    When HE&S Managers and Plant Operators look for alternatives, they seek out our biological process and high-performance bioreactor.

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  • Petrochemical

    Over 99.5% of H2S and SO2 can be eliminated by a rugged biological system with few moving parts and no chemical consumption, operating at ambient temperature and pressure. 

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  • Ammonia

    When HE&S Managers and Plant Operators look for alternatives, they seek out our biological process and high-performance bioreactor.

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  • Hydrocarbons

    Hydrocarbon recovery is best served with our bioreactor versus amine or caustic scrubbing—thanks to higher reliability, reduced maintenance and lower capital cost.

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  • Sour Gas

    With microbiology at our core, we transform carefully cultivated bacteria into a giant ecosystem to treat polluted air and sour gas emissions.

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  • Biogas

    Our proprietary biogas system reduces gas, biogas or boiler gas—with no chemicals and a low operating cost. 

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  • Odor

    Hard to define but easy to notice. Odor is a nuisance like no other – but it can be successfully treated.

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  • Sulfur Compounds

    Expanded capabilities for treatment of H2S, SO2, COS, CS2 and mercaptans now come at a lower cost with less maintenance.

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REACH OUT. Tell us what pollutant you're trying to solve for.

Contact Us ▶︎


We are always looking to make new contacts and meet companies keen to find out more about our products and services. Whether you have a project you want our engineers to take a look at, require more information, or just want to say “Hi,” please reach out and a representative will get back to you shortly.

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