Wet Scrubbers
A cyclonic wet scrubber built for the dirty end of the process. The Mikro-Vane tolerates high inlet dust loadings without sacrificing its collection efficiency, which is 99+% at around the 5 micron size range — and it does it at 1.2 kPa (5 in. w.g.) with no moving parts.
What is it?
The Mikro-Vane is a cyclonic industrial wet scrubber from Nederman MikroPul. It removes particulate from a dust-laden gas stream using curtains of scrubbing liquid draining through a circular vane assembly, combined with cyclonic separation. Collection efficiency is 99+% at around the 5 micron size range, held even under high inlet dust loadings, at a pressure drop of 1.2 kPa (5 in. w.g.).
It is deliberately a simple machine. There are no moving parts in the scrubbing vessel, water consumption and water pressure requirements are both low, and the design tolerates a high solids content in the recycled scrubbing liquid — so the water loop can be run hard before it needs attention. For plants running dryers, mineral handling or general dedusting duties where the dust load is heavy and the target particle size sits around 5 microns, that combination is usually cheaper to run than a higher-energy scrubber.
These are duties where the dust load is heavy, the material is often moist or sticky, and a dry filter would blind or need constant attention. Wet scrubbing moves the collected solids out as slurry instead, which is also why the technology is routinely specified where a dust is combustible.
The design
Scrubbing liquid is introduced into the scrubber as a spray directed down over a circular scrubbing vane arrangement. Everything that follows comes from the interaction between that liquid and a tangentially introduced gas stream.
Scrubbing liquid enters as a spray directed down over a circular scrubbing vane arrangement. Water pressure requirements are low.
As the liquid drains through the vanes, it creates curtains of scrubbing liquid across the gas path.
Dust-laden gas enters the scrubber tangentially and collides with the curtains, initiating particle agglomeration. The coarser particles produced are washed down to the slurry outlet.
A restriction disc located in the scrubbing vane assembly accelerates the spin velocity of the gas.
That acceleration, combined with the flood of atomized liquid from the spray, forms fine liquid droplets which encapsulate the fine particulates, again enhancing agglomeration.
The cyclonic action of the saturated gas stream as it spins upward forces the agglomerated particles to fall out of suspension.
The coarser droplets impinge on the mist eliminator vanes. Finer droplets are forced out of suspension by gravitational and centrifugal forces acting on the gas stream as it exits through the top.
Technology Overview
Nederman MikroPul has been a pioneer worldwide in providing wet scrubbers to solve air pollution control problems for almost 50 years, in several configurations and a full range of sizes. The Mikro-Vane is the heavy-dust, low-energy option in that range.
| Wet scrubber | Primary duty | Distinguishing feature | Performance |
|---|---|---|---|
| Mikro-Vane | Heavy particulate loads around the 5 micron range | Vane-generated liquid curtains plus cyclonic separation. No moving parts | 99+% at around 5 micron, at 1.2 kPa (5 in. w.g.) |
| Venturi scrubber | Sub-micron particulate, high gas temperatures | Wet-approach venturi with adjustable throat, followed by an entrainment separator | Typically greater than 99.9% for sub-micron particles |
| Dynamic scrubber | General industrial duties, particularly mining, minerals and ore | Integral wetted fan — the fan and the scrubber are one unit | Published per application |
| Packed bed scrubber | Gaseous pollutants requiring neutralisation | Packed media bed for gas absorption; compact design | Low capital cost, compact footprint |
| Rotary scrubber | Fine dust, harmful gases and odour control | One or two stage, vertical or horizontal installation | Low fresh water consumption, small footprint |
| Two stage scrubber | Higher efficiency on sub-micron dust at the lowest possible pressure drop | Multiple MikroPul technologies combined in one engineered train | Multi-Venturi inlet with Dynamic scrubber matches traditional venturi performance on half the energy |
Where an existing scrubber has been pushed beyond its original design specification or has to meet stricter emission codes, MikroPul's Multi-Venturi inlet can be retrofitted as a pre-cleaner to enhance the performance of an existing Mikro-Vane scrubber.
Wet scrubbers are available in mild steel, FRP or stainless steel. The wider range of construction materials includes carbon steel, plastics and FRP, and exotic alloy steels for aggressive liquors.
The MikroPul Solutions Lab characterises your dust and validates the collection approach before equipment is specified, so the selection is made on your material rather than on a generic assumption.
Common things to know
Answers to common questions about the Mikro-Vane wet scrubber
Connect with Nederman MikroPul to improve your dust collection.
Last updated: September 2026
A wet scrubber is an air pollution control device that uses a scrubbing liquid, usually water, to remove particulate or gaseous contaminants from an industrial exhaust stream. Because the collected material leaves as slurry rather than dry dust, wet scrubbers suit moist, sticky, hot or combustible dusts that are difficult to handle in a dry filter.
The Mikro-Vane achieves 99+% collection efficiency at around the 5 micron size range, and it holds that efficiency even under high inlet dust loadings. For sub-micron particulate, a venturi scrubber — typically greater than 99.9% on sub-micron particles — is the better fit.
1.2 kPa, or 5 in. w.g. That is a low pressure drop for a wet scrubber, and it is the main reason the Mikro-Vane is specified where fan energy over a long duty cycle matters more than sub-micron capture.
Yes — tolerating high inlet dust loadings without sacrificing collection efficiency is the defining characteristic of the design. It also tolerates a high solids content in the recycled scrubbing water, so the liquid loop can carry more solids before it needs attention and the system draws less fresh water.
No. There are no moving parts in the scrubbing vessel. Separation is driven by the tangential gas inlet, the fixed scrubbing vanes and the restriction disc, which is why maintenance demand is low.
Yes. A Multi-Venturi rod deck inlet can be retrofitted as a pre-cleaner to enhance the performance of an existing Mikro-Vane scrubber — an option for units that have been pushed beyond their original design specification or that now have to meet stricter emission codes.
Protecting People, Uptime, Performance with Nederman MikroPul. Thousands of Asphalt Installations Worldwide | More Than 50 Years of Application Experience
