Wastewater odor-control scrubbers can expose demisters to H₂S or ammonia chemistry, salts, biological fouling, outdoor conditions, and low fan-pressure margins. Open geometry, corrosion resistance, drainage, washability, and maintenance access are key.

Fiber-bed aerosol removal can deteriorate when gas channels through low-resistance regions caused by uneven media packing, edge gaps, settlement, uneven wetting, or partial plugging. Poor efficiency with normal or low DP can therefore indicate bypass rather than insufficient fiber density.

Low scrubber blowdown can increase dissolved salts and suspended solids in recirculating liquor, accelerating demister crystallization, particulate fouling, DP rise, and cleaning frequency even when gas and liquid flow remain unchanged.

Fermenters and bioreactors can entrain culture liquid through bubble bursting and foam collapse. Mist elimination can protect downstream filters and reduce product carryover, but cleanability, material construction, batch gas-flow variation, and sanitary requirements are critical.

Vacuum pump inlet demisters must remove process droplets and condensate while adding minimal suction pressure drop. Actual gas volume, pump tolerance, fouling, downstream condensation, liquid slugs, and vacuum-sealed drainage all affect separator design.