Wet suppression systems apply either water, a water solution of a chemical agent, or a micron-sized foam to the surface of a particulate-generating material. This measure prevents (or suppresses) the fine particles in the material from leaving the surface and becoming airborne.
The chemical agents used in wet suppression systems are either surfactants or foaming agents for materials handling and processing operations or various dust palliatives applied to unpaved roads. In either case, the chemical agent agglomerates and binds the fines to the aggregate surface, thus eliminating or reducing its emission potential.
In agricultural fields, electrostatic foggers provide electrostatically charged water droplets that agglomerate suspended particles, thereby increasing the particle size and deposition velocity.
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