Water Softener

    De-Chlorination

    Demineralization

    Electrodeionization

    Multi- Media Filtration

    Microfiltration

    Ultrafiltration

    Nanofiltration

    Reverse Osmosis

    Distillation

    Ion Exchange

    Ultraviolet Disinfection

    Aeration

    Deionization

    Activated Carbon Filters

    Ozonation

UV Disinfection / Ultraviolet Disinfection

 

All living organisms contain DNA (Deoxyribonucleic Acid), a nucleic acid that contains the genetic instructions used in the development and functioning of living organisms. The main role of DNA is the long-term storage of information and DNA is often compared to a set of blueprints, since it contains the instructions needed to construct other components of cells such as proteins and RNA. The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in regulating the use of this genetic information.

When organisms are subjected to UV light of sufficient dosage in the range of 200-300 nm, DNA and RNA molecules absorb the UV. The absorption of UV radiation at 254nm causes the formation of dimers along the DNA strands. Dimers are A_A (adenine - adenine), GG (guanine -guanine), T-T (thymine-thymine) compounds as opposed to the normal formation of A-T-G-C- etc. The net effect is disruption of the RNA nucleic material so as to prevent cellular replication. So, while bacteria are not typically killed outright, the failure to replicate prevents proliferation.

Dosage is a function of wavelength, intensity and time of exposure. If the dosage is not optimized, then complete inhibition of replication WILL NOT occur. An insufficient UV disinfection dosage may cause limited damage to the DNA, which can, under favorable conditions, repair itself using repair enzymes.

Ultraviolet disinfection systems typically utilize thin cylindrical bulbs capable of generating narrow band wavelength UV light in the 254 nm range, placed in close proximity to high-purity glass tubes through which the water flows. The unit is sized to provide adequate dosage at the specified flowrate. The water to be treated must be sufficiently free of turbidity (sediment), iron, manganese and any colorant that could affect transmission of the 254 nm UV light. Manufacturers' specifications should be consulted.

Fields marked with * are required.