The process
Zero liquid discharge plants concentrate effluent in MVR evaporators and dry the salt in a dryer. The MVR blower is the heart of the evaporator, the dryer needs a hot air fan, and the odour from the treatment tanks goes to a scrubber.
The gas
Saturated vapour, often with dissolved solids and a low pH. Wetted parts in stainless steel, a shaft seal rated for the vapour, drain points and a casing designed for condensate.
Selection for this process
| Type | Packed bed for gas absorption |
| Material | Stainless steel |
| Outlet | Mist eliminator ahead of the fan; fan in the same material as the scrubber |
Types, construction and performance of the wet scrubber.
Industries
Fans in effluent treatment and zero liquid discharge plants
Wet Scrubber in other processes
Copper and Zinc SmeltingHot Dip Galvanising LinesWaste IncineratorsBiomedical Waste IncineratorsCrematoriaChemical Reactor and Tank VentsFertilizer Granulation PlantsSulphuric Acid PlantsPulp Mills and Recovery BoilersAutomotive Paint ShopsPickling and Acid Treatment LinesTyre Curing PressesBlasting and Painting HallsWater and Wastewater Treatment PlantsBOF Steel ConvertersSugar Dryers and SulphitationLead Smelting and Battery RecyclingCashew and Nut Processing
Information needed to select or quote
- Gas volume and temperature. Actual flow at the inlet, normal and upset temperature, moisture.
- Dust or pollutant. Inlet loading, particle size distribution, whether it is abrasive, sticky, hygroscopic or combustible; for gases, the species and concentration.
- Required outlet. The emission limit or clean gas concentration the unit must meet.
- Site. Available space and height, material of construction preferences, and how the collected material is to be discharged.