Air cleaning
The incentive to develop systems for cleaning house air derives from the agricultural sector being under great national and international pressure to reduce its environmental load. For animal production, this involves requirements for a reduction of ammonia emissions, other nitrogen compounds, etc.

This also applies to odours from livestock 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 livestock 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 air cleaning. The system is based solely on biological air-cleaning principles. These principles 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 the livestock house is reduced down to 1 ppm

·         The pig smell is eliminated from the outgoing air

·         The dust content in the outgoing air is reduced by 90%

The livestock house air is led through two filters sprinkled with water. Ammonia and odorants are removed in both filters while most of the dust is removed in the first filter. The air cleaning process is a biological process. Biofilms of bacteria and other microorganisms are formed on the filters. Ammonia, odorants and dust are removed when the housing air gets into contact with the water and the biofilms in the filters.

BIO Module or BIO Flex
The Farm AirClean systems can be divided into two groups - BIO Module and BIO Flex.

The air volume to be cleaned is crucial for the choice of system. The positioning of the air cleaner and the duct layout from the livestock house to the air cleaner can be factors as well.

The BIO Module is used if the required air cleaning level is low and if the air cleaner is to be placed in the attic of the livestock house. BIO Flex is used if the required air cleaning level is high and if the air cleaner is installed inside or in an extension to the livestock house.

BIO Module
The BIO Module is a modular system where the quantity of air cleaning cabinets can be calculated based on the number of cubic metres of housing air to be cleaned. The cleaning units are available in capacities ranging from 10 000 to 40 000 cubic metres per hour. All units are fitted with automatic filter washers.

The idea behind the module-based filter unit was to standardise the air cleaning unit into prefabricated concept units. They are of a very high quality and thus ensuring the usual advantages: reliability and reduction of product manufacturing and mounting costs.

BIO Flex
BIO Flex is designed to provide 'air cleaning by the metre'. The system is very flexible for which reason the farmer can optimise the investment and the operating costs in relation to the current regulatory requirements. Furthermore, the requirement for manual cleaning and maintenance has been minimised.

BIO Flex is a biological air cleaning system - a two or three-step biotrickling filter for cleaning the air. The capacity of these installations ranges from 10 000 to 360 000 cubic metres per hour with the same controller. The reduction of odorants can be optimised by mounting a third filter and pH stabilization is also an option if this is a regulatory requirement.