Enviraj Consulting
Wet Scrubbers
| Wet Scrubbers | |
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| Overview | A wet scrubber is an air pollution control device that removes PM and acid gases from waste gas streams of stationary point sources before they are released into the environment. The pollutants are removed primarily through the impaction, diffusion, interception and/or absorption of the pollutant onto droplets of liquid. The liquid containing the pollutant is then collected for disposal. There are numerous types of wet scrubbers which remove both acid gas and PM. |
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| How Does it Works | The gas flow enters at the bottom of the tower and flows upward. Water sprays downward from nozzles mounted on the walls of the tower or mounted on an array at the tower center. Water droplets capture particles suspended in the gas flow through impaction, interception and diffusion. Droplets large enough to settle by gravity collect at the bottom of the chamber. Droplets that remain entrained in the gas stream are collected on a mist eliminator upstream of the nozzles. |
| Pollutants Removed | Particulate Matter, Acid Gases |
| Area of Application | Industrial |
| Environmental Footprint | High |
| Area Footprint | Low |
| Treatment cost per Cubic Meter | Morderate |
| Capital Cost | Low |
| O&M Cost | Morderate |
| Data Sources: | https://www3.epa.gov/ttncatc1/dir1/cs6ch2.pdf |
