Air scrubbing has been around for decades and was introduced as a way to address a variety of environmental concerns, regards the air quality leaving a livestock building. Many would argue that it has found a place because we have failed to address the processes in the house that create excessive emissions. There is a level of truth in this, but we cannot ignore the fact animal production is very dynamic and the pure nature of it, means there will always be some mess to clean up.
This is where air scrubbing comes in, as it provides a level of guarantee when the house process becomes challenging. Based on this assumption, scientists developed protocols to measure air abatement and the effects air scrubbers have on emission reduction. From the science came guidelines and a basis for testing and certification.
The process of testing usually takes a minimum of 1 year (summer and winter seasons) but can go on longer depending how the assessment runs. The result is an air scrubber design with a stamp of approval, that states it will achieve certain levels of reduction based on ‘X’ percent of the air leaving the building.
In Europe the accepted standard being, that if a minimum of 70% of the maximum air volume is cleaned, then the air scrubber should be able to achieve a good level of reduction. Something that would be accepted by most planning authorities.
A single or multi-stage scrubber could therefore achieve:
- Ammonia management – 70 to 90%
- Odour – 30 to 40%
- Dust – 80 to 90%
With proven or certified technology.