An Overview About UV Water Purifier

by Abhishek Kumar Content Manager

What Is UV?

Ultraviolet rays are an energy brand within the electromagnetic spectrum which is colorless, odorless. It ensures that your water is safe & clear of germs and other micro-organisms that can make you sick. UV ray is the chemical-free way to remove the microbial contamination from the water.

How Does UV water Purifier Work?

UV water purifier is one of the most effective methods for disinfecting bacteria from the water. The UV light penetrates the micro-organism present in the water and destroys their genetic core, i.e., DNA (Deoxyribonucleic acid), resulting in loss of its ability to reproduce. The disinfection of water by using UV ray is simple and effective. A UV water purifier effectively destroys almost 99.99% of microbes present in the water without adding any chemical or changing your water’s taste or odor.

A UV water filter system contains particular low-pressure mercury vapor pump which eliminates UV radiation specific wavelength (254 nm is considered as optimal wavelength for the disinfection). Some UV water purifier system use 185 nm UV unit for reducing the TOC, i.e., Total organic carbon.

100% disinfection of water is not possible; a UV water purifier can produce 99.9% disinfection with proper maintenance, the successful disinfection of water mainly depend upon the following factors which are discussed below

• Water Quality
  
• Flow Rate
  

Water Quality

The degree of disinfection done by UV light primarily depends upon the UV dose applied to the water. Some impurities present in the water (turbidity, iron, fulvic acid &, etc.) reduces the transmission of UV light through the water and cause a reduction in the UV dose which reaches the microbes.

Suspended particles present in the water also protects the microbes present in the water, bacteria buried within the suspended particle and get shielded from the Ultra-violate rays and pass through the unit unaffected. This kind of water purifier is most useful for treating distilled water or water purified by RO water purifier.

Flow Rate

The flow rate in UV water filter system has its significance because the dose of UV rays directly depend upon the flow rate of the water. If the flow rate is high, then the water will pass through the unit without enough UV exposure, and if the flow rate is too slow, then heat will generate which may damage the UV lamp.

UV Disinfection Versus Chemical Disinfection

Disinfection of microbes can also be done by using some chemicals such as Choline. But chemical disinfection produces some by-products which may change the chemical nature of the water hence most of the family is recommended to use UV water purification system if any types of microbial contamination are present in the water.

It is necessary to avoid consumption of drinking water which is contaminated by bacteria, virus, fungus, & other micro-organisms because it may cause fatal waterborne diseases. Some of the waterborne diseases are listed below:

• Botulism
  
• Campylobacteriosis
  
• Salmonellosis
  
• Cholera
  
• Typhoid Fever
  

RO Versus UV Water Purifier

RO, i.e., reverse osmosis water purifier is based on the reverse osmosis technology to eliminate all types of the water impurities, but the UV water treatment system suspend the growth or kill the micro-organisms present in the regular water. RO water purifier can be used to treat any water impurities, but the use of UV water purifier is restricted to only one types of contamination.

An advantage of UV Water Purifier

• Effective & quick: It is an effective way to treat microbial contamination and provides 99.9% disinfection from the microbes
  
• Don't add chemical in water: UV water purifier doesn’t add any chemical such as Chlorine for the removal of the bacteria present ion the water hence don’t alter the taste & odor of the water
  
• Low maintenance system: This system don’t require high maintenance change the UV bulb annually
  
• Cost effective: The cost of the UV water treatment system is always less than the price of the chemical treatment system
  

Limitation of UV Water Purifier

• Only kill or suspend the growth or kill the microbes but the debris remains in the water
  
• Don’t remove the dissolved salts, i.e., TDS from the water
  
• Requires pre-filter. The UV water purifier produces the best result when the input water is already free from physical impurities or distilled water
  

 

 

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Created on Sep 27th 2018 05:45. Viewed 509 times.

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