What type of water filter is the best?
There is a wide range of water purifiers available in the market, it is really hard to decide which one is the best. To choose the best water filter you must be aware of the various filtration processes involved. But there is no need to go searching to find more info about the purifiers and processes we have made the work easy for you.
Below enlisted are the filtration processes used:
- Sedimentation filtration
This process is used on a large scale all around the world for water treatment. This helps remove the sediments such as sand, dust, and other large particles suspended in the water.
The sediments are allowed to settle down on the surface by keeping the container at a fixed position. This process is ineffective in removing out the chemicals and contaminants that are smaller than 1 micron. Also, this process needs to be combined with other filtration processes to work effectively.
- Activated carbon block filtration
The activated carbon block that is used in this filtration is composed of fine carbon powder which is held together by a binding agent. It is effective against the removal of chemicals, bad taste, odor, and other contaminants in the water.
The carbon block is also able to reduce contaminants such as lead, VOCs, and microscopic cysts. And is resistant against bacterial growth. The main reason why this process is effective is due to the larger surface area provided due to the high porosity powder form.
- Granular activated carbon filtration
The granular activated carbon contains larger blocks as compared to the carbon block, and thus the rate of absorption is also low but the filtration rates are higher. This process is very similar to the activated carbon block filtration process for the removal of chlorine taste and odor. This can be used to protect the larger particles from entering the other filtration process.
This process is inexpensive and is a part of green technology as it doesn’t require a power supply as well as has no chemical additives. But the process is not so reliable and is used alone.
- Reverse osmosis filtration
In this filtration, we use the semipermeable membrane to separate the inorganic contaminants, most of the contaminants can be removed from the water but are ineffective in separating the water-soluble compounds. It is one of the filters that deliver the strongest filtration against a majority of the contaminants.
Looking at the bad side, this process is quite slow and wastes 3:1 of the water. It can not be used alone to clean the chlorinated water. Also, it requires a water tank to store out the filtered water and is expensive enough.
It is a traditional method of purifying the water. This is good for filtering the water but the results are slow and have so many loopholes in it. The cost for filtering and maintenance is very high as it consumes too much electricity and time.
- Ion exchange
It is used for removing the undesirable dissolved ions from the water by replacing them with some other ions having the same electrical charge. This filtration is used for softening the water and deionization purposes such as acid absorption, metal removal, and demineralization. Click here to find more info regarding the process involved.