What is an Activated-carbon filter & Multi-grade filter? How do they work, and what is the difference between them?
In This Blog post we are going to discuss the concept of Activated-carbon filter & Multi-grade filter. The article structure will be divided into three parts:
Part 1: What is an Activated-Carbon filter? How does it work?
Part 2: What is a Multi-Grade filter? How does it work?
Part 3: What is the difference between Activated-Carbon filter and Multi-Grade filter?
What is an Activated-Carbon filter? How does it work?
Activated-carbon filtration is the process that is used to remove the organic compounds and chlorine from the water. The filters are designed in such a way as to remove free chlorine, organic matter, odor, and color. It is used for the treatment of raw water and wastewater in industries. Activated carbon filters are based on the principle of adsorption, i.e., it treats and absorbs the impurities on the surface. Adsorption is directly related to the surface area of the media.
These are the small pieces of carbon in a powder or granular form that are notably used to remove the contaminants from the water. Activated carbon is highly porous. Around 1 gram of activated carbon has a surface area of more than 500 sq. meters.
What is a Multi-Grade filter? How does it work?
The multi-Grade filter (MGF) is generally used for the pretreatment in a purified water system. It is also used for post-treatment in ETP and STP. MGF removes the solid suspended particles from water. It has a longer life and requires low maintenance costs.
Multi-grade filters are used in water and wastewater treatment to remove the solid particles, dust, and dirt present in water. The raw water flows into the filter inlet through the media bed. The media bed comprises different layers such as sand, pebbles, gravel, etc. As the water passes through the various media layers, the filtration takes place, and it retains all the dust and suspended particles, and the water flows out of the filter outlet.
What is the difference between Activated-Carbon filter and Multi-Grade filter?
The fundamental difference between the activated carbon filter and the multigrade filter is- The activated carbon filter works on the principle of adsorption, whereas the multigrade filter works on the principle of retaining and removing physical impurities in a graded manner. The activated carbon filtration is a part of multi-grade filtration.
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