UV Light - Ultraviolet light


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Ultraviolet Light

Disinfection is a fundamental step in modern water treatment. UV disinfection is being used to an ever-increasing extent here, as a safe, chemical-free and reliable disinfection process. Extensive research projects and numerous trouble-free operational systems prove the safety and reliability of UV disinfection. With UV disinfection, the water to be disinfected is irradiated with ultraviolet light, which involves a purely physical, chemical-free process for water disinfection. UV-C radiation in particular, with a wavelength in the 240 to 280 nm range, attacks the vital DNA of the bacteria directly. The radiation initiates a photochemical reaction and destroys the genetic information contained in the DNA. The bacteria lose their reproductive capability and are destroyed. Even parasites such as Cryptosporidia or Giardia, which are extremely resistant to chemical disinfectants, are efficiently reduced. The initiation of photochemical reactions is utilised in other applications too. The undesirable combined chlorine in swimming pool water is reduced by UV radiation, as a result of which enormous fresh water savings are achieved. Oxidants such as ozone, chlorine or chlorine dioxide are reliably reduced in the production water used in the food and beverages industry, avoiding the need for costly activated charcoal filters. Special version systems with special lamps and special composition of the radiation chamber can be used for reduction of TOC (Total Organic Carbon) in the treatment of ultra pure water.

UV disinfection has many advantages:

Immediate and safe destruction of the bacteria without addition of chemicals
Photochemical reduction of undesirable substances
No THM or AOX formation, no formation of other undesirable substances
No impairment of odour or taste of the water
No storage and handling of chemicals required
Effect is independent of pH
No reaction vessel or reaction tank required
Low space requirement
Low investment and operating costs with high reliability and efficiency

UV applications

A large number of UV disinfection systems are in use worldwide, for the most diverse applications:

Own source water suppliers and municipal water works: disinfection of drinking water.
Food and beverages industry: to destroy bacteria in the water needed for food and beverage production and for disinfection of service water, to reduce the chlorine dioxide in production water.
Pharmaceuticals and cosmetics industry: to maintain the high microbiological requirements of production water to destroy residual ozone in production water without using activated charcoal filters.
Reverse Osmosis plants: permeate disinfection.
Municipal sewage plants: reduction of the bacterial count in the sewage plant outflow for reduction of the bacterial count in the industrial water extracted from the sewage plant outflow.
Horticulture: disinfection of the irrigation water.
Spa pools and swimming pools: disinfection of the pool water for chloramine reduction in the pool water.
Semiconductor industry: reduction of TOC and to maintain the high microbiological requirements of the production water.

Complete offer

Nanotech offers a full advisory service, covering all components required for the safe use of a UV system:
Assessment of the situation on site by trained, competent field employees.
All water parameters needed for an optimal system design can be measured in our water laboratory.
Design and planning of the system.
Commissioning and system maintenance by our trained service technicians.