An upstream mist eliminator can protect a WESP by removing coarse droplets and bulk contaminated liquid before the electrostatic stage handles fine aerosol and particulate. The benefit depends on inlet liquid loading, solids, pressure drop, gas distribution, and wash-system interaction.

Pulp and paper bleach-plant mist eliminators may be exposed to corrosive liquid, fibers, salts, and suspended solids. Fine mesh can bridge and foul, so open geometry, washing, drainage, pressure-drop monitoring, and maintenance access are important for long-term reliability.

Electroplating and chrome-plating scrubber demisters may handle both ordinary scrubber droplets and much finer process aerosol. Chemical resistance, low pressure drop, fouling control, ventilation airflow, washability, and correct aerosol measurement are all important.

Geothermal steam demisters must control mineral-bearing brine carryover as well as ordinary liquid droplets. Silica and salt deposition, flashing entrainment, steam pressure drop, drainage, vessel level, and long-term cleanability are key design considerations.

Venturi scrubbers generate fine droplets and high liquid loading by design, often with captured solids inside the droplets. Downstream mist elimination may require bulk separation, vane stages, polishing media, strong drainage, fouling tolerance, and careful pressure-drop control.