The basis for developing systems for cleaning house air is that the agricultural sector is under great national and international pressure to reduce its environmental load. For animal production, this involves requirements regarding a reduction of ammonia emissions and the emission of nitrogen compounds. 

This also applies to odours from houses. Producers are facing an increasing number of limitations when they wish to establish new house systems or extend them. These limitations often occur in the form of protests against the odour load.

Recent research results have shown that dust from houses can be disease carriers. SKOV has developed an efficient air-cleaning system for cleaning the outgoing air.

Farm AirClean
Farm AirClean is a system for biological cleaning of air. The system is based solely on biological air-cleaning principles and these are effective when it comes to reducing odour, ammonia and dust. Thorough testing of the system has shown that:

• the content of ammonia in the outgoing air from houses is reduced to less than 1 ppm
• the ‘pig smell’ is removed from the outgoing air
• the content of dust in the outgoing air is reduced by 95%

Farm AirClean is a modular system where the quantity of cleaning units can be calculated based on the number of cubic metres of house air to be cleaned. The cleaning units are available in capacities ranging from 10,000 to 40,000 cubic metres per hour. All the units are fitted with an automatic filter washer.

The house air is sent through two filters which are sprinkled with water. Ammonia and odour substances are removed in both filters while the major part of dust is removed in the first filter. The air-cleaning process is a biological process. Bio films of bacteria and other microorganisms are formed on the filters. Ammonia, odour substances and dust are removed when the house air gets into contact with the water and the bio films in the filters.

Custom-made Solutions
SKOV can also supply custom-made solutions, where the cleaning unit is integrated in the livestock building.

The systems are developed with due consideration of the livestock building layout so it is possible to choose a system with an air outlet suitable for the construction of the building. The overall system principles are:

Central exhaustion
Central exhaustion is characterized by a channel in which the outlet air from several sections is led to a filter house where the biological air cleaning unit is situated.

Wall exhaustion
Wall exhaustion is characterized by the outlet air from each and every section being led through the wall and further on to a filter house where the biological air cleaning unit is situated.

Decentralized exhaustion (underfloor exhaustion)
Decentralized exhaustion is characterized by underfloor exhaustion through the slatted floor and the air being led further on through an air duct to a filter house where the biological air cleaning unit is situated.