The energy in a motive fluid is used to entrain and remove noxious gases, fumes, and dusts from a contaminated gas stream. Systems with separators are available for once-through liquid operation, and skid mounted package systems with separators with liquid storage, a recirculation pump and piping reduce the amount of makeup liquid required. The conventional venturi has a side gas inlet and bottom gas and liquid discharge. However, inline units and wet approach units with body washdown are available.
EST Corporation was acquired by Severn Trent Services in 2001.