Articles
A COMPOSTING PLANT AS AN ODOUR SOURCE, COMPOST AS AN ODOUR KILLER
The technique of measurement of these odour emissions has been rather incomplete up to now, because most composting systems do not show measurable flow rates.
This flow rate however is needed for the dimensioning of waste air purification systems and for the prediction of immissions to evaluate odour annoyance.
With a recently developed sampling technique it was possible to measure the odour emissions of windrows and the results of the measurements on sereval different composting systems can be compared.
The odour problems connected with the operating of composting plants can be solved by a purification of the waste air.
It is rather astonishing that in this case the prepared final product of composting has proved to be excellent filling material for biological filters.
In investigation the maximum efficiency of biofilters could be determined for the cleaning of waste air from compost plants.
There is a number of ranges of application in which compost can be used as filter material for biological air purification.
The measurement results of biofilters in the food production industry are quoted as an illustration.