Air washer on composting unit (West Flanders)

To comply with the Vlarem directive (max 13ppm ammonia emissions) a multistage air washer was installed at a composting company in West Flanders.

The first section is chemical, for the capture of ammonia.  The second section is a biological system for odour reduction.  The original biobed was replaced by an air washer because of the excessively high counterpressures and the decaying filler material.  In this way there is no odour nuisance to the environment.