WESPs are used in situations for which dry ESPs not are adapted. Typical example is when the material to be collected is wet, sticky, flammable, explosive, or has a high resistivity. The WESP technology is also advocated when the environmental standard demands higher collection efficiencies as emissions < 10 mg/Nm3.
The WESP design is modular shaped. The nominal capacity of each module is from 1.000- 3.000.000 m3/h.