A dry Scrubbing system unlike the wet scrubber does not saturate the flue gas stream that is being treated with moisture. Therefore, dry scrubbers do generally not have wastewater handling/disposal requirements.
Advantages of Wet Scrubber
Dry scrubbers are also more commonly used than wet scrubbers mainly because they produce comparatively little waste material.
The use of dry scrubbers is less expensive as there is no associated cost with removing, transporting, and storing waste water from wet scrubbers.