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UV Technology

UV Technology:

UV Technology water purification is the most effective method for disinfection. Ultraviolet (UV) rays penetrate harmful pathogens in your home’s water and destroy illness-causing microorganisms by attacking their genetic core (DNA).Ultraviolet water purification is the most effective method for disinfecting bacteria from the water. Ultraviolet (UV) rays penetrate harmful pathogens in your home’s water and destroy illness-causing microorganisms by attacking their genetic core (DNA). This is extremely efficient in eliminating their ability to reproduce. Disinfecting your water with Ultraviolet light is exceptionally simple, effective and environmentally safe. UV systems destroy 99.99% of harmful microorganisms without adding chemicals or changing your water’s taste or odor. UV water purification is usually used with other forms of filtration such as reverse osmosis systems or carbon block filters.   

UV Purification – Chemical Disinfectant

UV systems are an effective means of water disinfection for residential point of entry use to help disinfect the entire home. UV systems are highly recommended to homeowners who may suspect any E.coli, cryptosporidium, giardia or any other types of bacteria and viruses in the water. It is not advised to use chlorine or other chemicals to disinfect water like private well owners, because of the toxic byproducts they create. It is important to avoid drinking any water that is potentially contaminated from bacteria to protect yourself from any water-borne bacterial diseases.

How UV Water Purifiers work

Ultraviolet (UV) light is invisible and is emitted by different light sources, including the sun. At certain intensities, UV light emits enough radiation to kill the DNA in bacteria and other microorganisms. An ultraviolet water purification system typically consists of a UV light source with an output of around 254 nanometers which produces radiation of a significantly greater intensity than the radiation produced by sunlight.

How does UV light sterilize water?

Ultraviolet purification is one of the most effective method for disinfecting bacteria from water. Pathogens and microorganisms are destroyed by using Ultraviolet light. UV disinfection does not remove any dissolved organics or inorganics from water.

Why is ultraviolet light used in water treatment?

Even though exposure to UV rays can harm humans, it is used in water purifying treatment systems. UV water purification systems use special lamps that can emit UV light of particular wavelength which has the ability to disrupt the DNA of microorganisms. The water treatment industry uses a high powered form of Ultraviolet light called UV-C which will destroy a minimum of 99.99% microbes. The microbes like E.coli, Cryptosporidium and Giardia develop an immune mechanism to chemical treatment. Unlike the other methods UV technology never modifies the composition of water.

Is ultraviolet water treatment safe?

Ultraviolet water treatment takes water purification to a greater extent by providing a safe solution against chlorine-resistant microorganisms.  Ultraviolet radiation does not use heat or chemical additives of any kind during the purification process.

Reasons why you should choose a Perfect Water UV System:

  1. First to offer a unique combination of the lamp and sleeve – making maintenance simple and no need for tools!
  2. First to provide a timer that notifies you of the need to replace the lamp
  3. First to provide an annual mailed reminder of the need to replace your lamp
  4. First to make use of high-output lamps able to produce almost twice the output of conventional lamps
  5. First to employ a design that optimizes efficiency through fluid dynamics, reducing footprint of system
  6. First to provide a diagnostic display to explain why the system may be in alarm
  7. First to provide a reference card with the system outlining the most important system functions and maintenance
  8. First to offer a ten-year warranty against manufacturer’s defects on the UV chamber, and three years on the circuit boards, power supply, and all electrical connections

Limitations of UV treatment

  • Under ideal conditions, a UV unit can provide greater than 99% reduction of all bacteria. Even with this performance, ultraviolet disinfection has the following limitations:
  • “Point” Disinfection – UV units only kill bacteria at one point in a watering system and do not provide any residual germicidal effect downstream. If just one bacterium passes through unharmed (100% destruction of bacteria cannot be guaranteed), there is nothing to prevent it from attaching to downstream piping surfaces and proliferating.
  • Cells Not Removed – Bacteria cells are not removed in a UV unit but are converted into pyrogens. The killed microorganisms and any other contaminants in the water are a food source for any bacteria that do survive downstream of the UV unit.

Due to these limitations, the piping in a watering system treated by UV disinfection will need to be periodically sanitized with a chemical disinfectant.

Maintenance requirements for UV units

  1. Lamp Replacement – UV lamps do not burn out as normal fluorescent lamps do. Instead, the UV lamps will solarize, reducing their intensity to about 60% of a new lamp after about one year of continuous use. When lamps are new, they will generate a dosage level near 60,000 µW-s/cm2 . When the dosage drops to 30,000 µW-s/cm2  (the minimum dosage needed to effectively kill bacteria) lamps should be replaced. Lamp life will be shortened significantly if the lamp is turned on and off more frequently than once every eight hours.
  2. Monitoring Performance – Water should be sampled and tested for bacteria counts regularly. Sample before and after the UV unit to test its performance. Water should also be sampled in the animal rooms since bacterial growth can occur downstream of the UV unit.
  3. Cleaning – As water passes through the UV unit, minerals, debris and other material in the water will deposit out and onto the quartz or Teflon sleeve. This will limit the penetration of UV rays through the sleeve and into the water. To maintain high clarity, the glass around the lamp must be cleaned regularly. Cleaning frequency depends on the water quality and will be minimal with RO, distilled, or deionized water.
  4. Monitoring UV Dosage – UV light intensity meters are available which indicate the penetration of UV light through the glass sleeve and the water. Low intensity means the UV dose is too low to provide adequate disinfection. This meter will indicate when cleaning or lamp replacement is needed.
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