Difference between RO, UV, UF, TDS Water Purifier

Renovator Appliances has six type of Water Purifiers for different purpose in different capacity.

Are you confused about what is the difference between the RO, UV, UF, TDS Water Purifiers? Here you can know about the best water purifying technology and full form of the terms.

Full Form

Term Full Form Definition
RO Reverse Osmosis
UV Ultraviolet
UF Ultra Filtration
TDS Total dissolved solids

Comparison Chart

This is the comparison chart table between the various technologies which are used for purifying the water for drinking.

Difference RO UV UF
Electricity Required Required Not Needed
Method Filter Bacteria & Virus Kills Bacteria & Virus (Dead cells in water) Filter Bacteria & Virus
Microbes Escape Possibility Yes No Yes
Prefiltration Need or Comes With Prefiltration Need Prefiltration or Clear Water No Need
Filtering Time More Slower Fastest Slower
Dissolved Salts Removed Not Removed Not Removed
Good Minerals Removed Not Removed Removed
Toxic Materials Removed Not Removed Removed
Water Taste Not Natural Natural Not Natural
Muddy Water Not Accepted Not Accepted Accepted
Water Wastage More Water No or Less Water Less Water
Maintenance Needed Needed Less Needed
Cost Expensive InExpensive Average

Reverse Osmosis

Osmosis Vs Reverse Osmosis

The full form of RO is Reverse Osmosis. The RO water purification uses a semipermeable membrane which filters the dirt present in the water by compressing the molecules. During the filtering process the molecules is pressured to pass into the membrane which allows only the water molecules and stops the unwanted bigger substance from entering into the filtered drinkable water.The biggest drawback of the reverse osmosis purifier is the water wastage. Only 5 out of 15 percent of the water is purified by this process and the others will be released as waste water. The RO purification not only removes the harmful substance but it will also removes the good minerals and irons in the water but some purifiers adds some minerals for providing good taste.

Ultraviolet Water Purification

The full form of UV is the Ultraviolet. As the name indicates the ultraviolet water purification involves the UV-C light rays to kill the bacteria, virus, algae, molds, yeast which may presents on the water. The ultraviolet rays is so powerful which will destroy the DNA of the bacteria and virus but it will not filters the water unless the purifier consist of additional filtering systems.

In some cases the water purified with the UV technology may still consists of the microbes but their reproduction will be stopped and if such purified water kept directly under the sunlight then it may again convert all the bacteria into reproductive mode. Each UV water purifier uses different dose level of UV and this is one of the effective water purification system which will not introduce any chemical substance into the purified water. It is recommend that the water purified with the UV purifier must not be kept under the visible light for significant amount of time. The UV bulb inside the purifier must be replaced per year and the UV bulb may still glove after an year but it will not give assure that it still producing the UV rays.

Ultra Filtration

The term UF stands for the Ultra Filtration. It has a filter which removes the unwanted components and particles present in the water. The water is passed with some force against a hollow fiber threaded semipermeable membrane and this stops the bad elements from entering the water. The main advantage of UF water purifiers is that there is no need for the electricity to work.

Total dissolved solids

The water consist of many organic and non-organic particles such as the chloride, salt, iron, sulfur, ion, nitrate. These particles are being known as the Total dissolved solids (TDS). If it is mentioned that the water purifier will remove the TDS then these components will get removed from the water during the filtration process.

The US government has some regulation on the TDS present on the water. The TDS amount in the water has to be less and should not be more.

  • TDS less than 300 is best quality.
  • TDS range from 300 to 600 is good quality.
  • TDS range from 600 to 900 is average quality.
  • TDS range from 900 to 1200 is poor quality.

Note: Sometimes good minerals are added to the water which will increase the TDS amount but the water will not be harmful for drinking.