Skip to main content

Exhaust air purification industry

oxytec can solve most exhaust air problems in an environmentally friendly way.

Innovative processes for exhaust air purification

When Oxytec was founded almost 20 years ago, UV ozone technology for odour and grease reduction was still completely unknown. Fires caused by greasy extractor bonnets were not uncommon.

Oxytec has made a considerable contribution to establishing certified processes for exhaust air purification with UV-C and UV-ozone technology. Today, this technology is state of the art.

UV ozone exhaust air purification

Clarifying thunderstorm

In UV ozone disinfection, pure ozone is generated via UV light in combination with atmospheric oxygen. The process is borrowed from nature: a cleansing thunderstorm works according to the same principle. The fresh scent after the application of ozone disinfection is similar to that after a thunderstorm and underlines the natural way of air purification.

Air disinfection with pure oxygen

In conventional processes, ozone is generated via high voltage. This also produces nitrogen oxides, which in turn are a burden on the air we breathe. With oxytec systems, the ozone is generated by UV light as an ozone generator – a process that does not produce any dangerous by-products such as nitrogen oxides.

Even the ozone disappears without leaving any residues because, as a highly reactive substance, it quickly forms compounds with other molecules, neutralising pollutants as desired.

The advantages

  • Reduces odour and total C content according to TA Luft (German Clean Air Act)
  • Resists humidity up to 100%
  • Tolerates load fluctuations
  • Functions as an on/off system and without preheating
  • Energy-saving

Exhaust air purification systems with UV ozone

Clean Exhaust Air – air treatment based on UV and ozone

This exhaust air system is designed for exhaust air purification in industry. Air purification takes place in three steps:

  1. Breakdown of long-chain compounds by UV light
  2. Formation of ozone and hydroxyl radicals and their decay products
  3. Reaction of the ozone with the broken down compounds.

The system effectively reduces VOCs/total C, formaldehyde, H2S, odours and fats in industrial exhaust air and complies with all official requirements according to TA Luft (total C, formaldehyde, aromatics, mercaptans, odour limits).

The unit is easy to install, is also suitable for placement on the roof, has low CO₂ emissions and very low energy consumption.

Clean Fryer Air – compact exhaust air purification system for greasy exhaust air

The compact and lightweight Clean Fryer Air (CFA) exhaust air purification system is designed for exhaust air purification in the food industry, especially for processes with fatty, organically contaminated and odorous exhaust air.

This unit creates pleasant working conditions by significantly improving the room climate and fulfils all official requirements (total C, formal aldehyde, aromatics, odour limits). The CFA is the ideal solution for frying lines and is also suitable for other odour-intensive processes.

UV-C disinfection of the air

The sun as a role model

As early as 1877, English researchers noticed that microorganisms do not multiply further when exposed to sunlight. Later research revealed that this effect is caused by light of a certain wavelength, known today as UV-C or ultraviolet radiation.

Comprehensive protection against germs

UV-C air disinfection is effective against all airborne microorganisms such as bacteria, viruses and moulds. UV-C disinfection replaces thermal processes, avoids the use of chemicals, leaves no pollutants behind and is therefore also particularly environmentally friendly.

UV-C air purification provides valuable services in food production because it reduces the risk of contamination and helps to avoid the use of preservatives. UV-C air purification is particularly suitable for rooms where people or animals are permanently present.

The advantages

  • Improves appearance, shelf life and quality of foods
  • Reduces the introduction of germs during production
  • Prevents the development of germ resistance
  • Prevents cross-contamination
  • Saves the use of chemicals

UV-C systems for air disinfection

UV IB – for installation in air conditioning systems

The UV-IB disinfects the air on a UV-C basis. It has a ballast integrated in the frame. The germs, viruses, yeasts and mould spores that often settle in air-conditioning and ventilation systems and spread into the rooms with the air currents are effectively eliminated.

Plasma exhaust air purification

Solar heat in the nano range

Plasma is a high-energy state of matter. 99 percent of the universe consists of plasma. The sun, for example, is a gigantic ball of plasma. Air purifiers with this technology have proven their worth for cleaning and odour reduction of commercial and private kitchen exhaust air as well as industrial exhaust air.

Safely neutralise fats in the exhaust air, viruses and pollutants

In plasma air purification, the air is transformed into the energetic state of plasma by controlled voltage. Viruses, bacteria and germs are destroyed in the process. At the same time, activated oxygen (O³) is created in the plasma, which also reacts with the pollutants in the air and binds them. The air becomes harmless and odourless in fractions of a second, fat components are broken down.

The advantages

  • Reliably excludes odour nuisance
  • Enables downstream heat recovery without additional effort
  • Enables the exhaust air to be ducted into the occupied zone of people
  • Turns exhaust air purification into a ventilation unit


Simply wash out particles

Exhaust air from smokehouses, laboratories or animal stables often contains solid components such as ammonia and odour-bearing particles. The Oxytec scrubbers remove these particles, reduce the exhaust air temperature and enrich the air with moisture. In this way, they also help a downstream UV system to be more efficient.

The advantages

  • Pre-filters coarse particles and non-oxidisable substances
  • Separates up to 95% of soot particles and ammonia
  • Reduces odours by approx. 30% 
  • Reduces the exhaust air temperature by approx. 50%.

Scrubbers for the reduction of VOCs, ammonia and formaldehyde

Scrubber systems are used to pre-clean polluted exhaust air and at the same time reduce the exhaust air temperature. They are suitable for smoke-contaminated air and for flushing out water-soluble substances such as ammonia or formaldehyde.

Smoke scrubber for cleaning smoke exhaust air

This smoke scrubbing system uses an automated exhaust air scrubber plus a downstream UV ozone system to clean the highly tar-containing smoke exhaust air from manufacturing processes in the food industry (smoking ovens) and eliminates the high odour emissions.

Clean Washer Air

This exhaust air scrubber effectively removes water-soluble and odour-bearing particles in the exhaust air. It has proven particularly effective for ammonium-contaminated exhaust air from laboratories, animal stables, slaughterhouses and animal processing plants. Pollutants are effectively separated from the exhaust air.

The scrubbing liquid sprays against the air flow, thus achieving the highest degree of scrubbing for toxic gases and odorous substances.

The washed-out substances are concentrated and separated by means of a sump. More than 99 % of chlorine gas, ammonia and hydrochloric acid vapours are removed.

Do you have any questions or
would like a quotation?

Please contact us: