Impurities such as solid particles and gaseous compounds are generated from the processes carried out in industrial production cycles. These increase the degree of pollution of the atmosphere. Air filtration systems allow the reduction of the polluting load within limits that not to cause damage to humans or to the environment, In order to select and size the most suitable filtration system it is necessary to identify the characteristics of the different pollutants emitted:
- For substances of gaseous origin it is mainly necessary to know their nature and concentration.
- For dusts, it is essential to know the size distribution, the concentration with average and extreme values and the characteristics in terms of abrasion capacity, erosion and adhesion.