High energy venturi scrubbers are used for control of fine particles in the size range of one micron and smaller. A gas side pressure drop is used to provide intimate contact between the particles in the gas and the scrubbing liquid. A higher gas side pressure drop will remove smaller particles from the gas. For varying gas rates, variable throat designs are available to maintain the pressure drop needed for effective control of the particles. Skid mounted package systems including a cyclonic separator with liquid storage, a recirculation pump, and piping reduce the amount of makeup liquid required. System blowers can also be included.
EST Corporation was acquired by Severn Trent Services in 2001.