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UV Water Sterilizer
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REDA Water Group
Elsharqia, Egypt
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What is ultraviolet (UV) light?
Bacteria, viruses, spores, and molds are all rendered inactive by UV light, which penetrates their DNA and breaks down the adenine and thymine bonds, preventing them from proliferating and spreading infection.
 

Two popular UVC lamp technologies are utilized in municipal and industrial settings:

  • A monochromatic (single-wavelength) output at 254 nm with a 30%+ conversion of electricity to UVC is provided by amalgam lamps. These lamps have a low energy density, which means they use comparatively little power (between 100 and 800 W) and are long-lasting despite their efficiency. 
  • Although larger multi-lamp systems can be cumbersome and challenging to maintain, they are utilized when efficiency is crucial. A broad spectrum of polychromatic output is provided by medium-pressure lamps. This can be helpful in matching a target organism's sensitivity, but their energy efficiency is lower (-15%). On the other hand, they are short and powerful (1 kW to 24 kW), so a smaller reactor requires fewer lamps.

The advantages of using low- or medium-pressure lamps
Minimal power consumption 

Although they require less power, low-pressure lamps are more effective.
More effective at greater flow rates

One medium-pressure lamp can handle a significantly higher flow than one low-pressure lamp because medium-pressure lamps have a significantly higher power density than low-pressure lamps.
Minimal power consumption
 
Systems are much smaller because medium-pressure lamps with the same UV output are about one-third as long as low-pressure lamps.
Lamp-life 

Modern medium-pressure lamps have an approximate lifespan of 9000 hours, while low-pressure lamps usually last between 9000 and 15000 hours.
Reduce the need for maintenance

Medium-pressure UV systems typically require fewer lamps and have a smaller footprint than low-pressure systems under the same circumstances.
Efficiency of disinfection

Medium pressure produces more UV light energy and ruptures the cell wall in addition to breaking a microbe's DNA and bond. Certain microorganisms are considerably more susceptible to the various wavelengths that medium-pressure lamps produce.
High temperature of the water

Low-pressure UV systems can only function in the 5–40°C range, while medium-pressure UV systems are barely impacted by the water temperature.
Low operating temperature

While medium-pressure lamps operate at 600°C to 800°C, low-pressure lamps operate at roughly 120°C.
'ON' status following no water flow

LP systems can often run longer than MP systems without any water flow.



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