All You Need to Know About Wet Scrubbers and Its Benefits
Wet Scrubbers are a combination of machines whose main function is to remove harmful and toxic substances from gases emitted from industrial sites before they are released into the atmosphere. The process generally takes place by making polluted air react to a scrubbing liquid agent by which the impurities are separated and are eventually removed.
#1. How do they work?
The main purpose of a wet scrubber is to absorb small particulate matters or gaseous pollutants from the industrial air. They attract impurities in the air by capturing them in fluid particles. The fluid containing such impurities is then collected and treated well to remove the impurities from it. A mist eliminator can be also be used to remove any impurities that are present in a scrubber inlet gas. A wet scrubber is a revolutionary invention in controlling air pollution because they can remove both particulate solid matters and gaseous substances.
#2. Repair of wet scrubbers
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| Wet Scrubber |
With time and continuous usage, a wet scrubber may damage, and its efficiency may reduce. Under such circumstances, its repair remains the only option as a faulty or damaged device can no longer help in 100 % evacuation of toxic impurities from the air. Some of those techniques which can help in repairmen of wet scrubbers are:
- Removal of rust and corrosive substances from the scrubber
- Calibration tuning or complete replacement of the instruments
- Repair or replacement of motor, fan, pump, metering pump etc
- Washing the inside of an entire equipment etc.
#3. Components of the Wet Scrubber
A wet scrubber comprises of the following components:
- A network of ducts and a system of fans
- A saturation chambers
- An efficient mist removal device
- Pumping and recycle system
- System for treating and recycling spent liquid
- An exhaust stacks
#4. Materials they are made up of
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| Wet Scrubber |
They are mostly made up of fiber-reinforced plastic and dual keys in order to prevent them from getting corroded often.
#5. Advantages of wet scrubbers
- Wet scrubbers can act well under high-temperature and high-humidity of industries.
- Unlike other devices to stop air pollution, wet scrubbers can remove both particulate solid matters and gaseous substances.
- Wet scrubbers do not face any difficulty in removing impurities from corrosive gases as they can neutralize them.
- They prevent air pollution to a great extent as they do not allow impure air to mix with the environment.
- Wet scrubbers are widely used in industries such as acid plants, fertilizer industries, steel factories, asphalt plants and other big industries where removal of toxic substances from the air becomes a must.
- They are an inexpensive method of removal of impurities from the air.
- Once the small particulate matters are collected, by no means they can escape into the atmosphere. They give 100 % removal of pollutants from the industrial air.
- They can work in high-temperature and high-humidity environment so they can work in almost all kinds of industries.
- Various pollutants of the industries are inflammable but since a wet scrubber acts on a fluid medium there are no chances of explosion or any other accident caused by fire.
#6. Disadvantages of wet scrubbers
- Wet scrubbers sometimes need the help of mist removal systems to get the separation done more efficiently.
- The spent liquid is needed to be treated for re-use.
- Since water is used as a base to remove impurities, it can form highly corrosive compounds with acids and other dissolved substances.
Thus, wet scrubbers have brought about a revolutionary change in reducing environmental pollution by cleaning harmful gases emitted from the industries.
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