How does disinfection by Ultraviolet work ?
The ultraviolet process has applications where microbial activity is present in water. The process will effectively destroy many harmful bacteria and viruses. The destruction is effected when water absorbs the ultra violet rays and the micro-organisms are exposed to UV radiation. When the micro-organisms are exposed to UV radiation, their protective membrane is penetrated allowing the DNA to be destroyed. The significant advantages of UV technology is that: • it does not distort the taste of water • alter the pH value • avoids creating new chemical complexes as occurs with chemical fed disinfection processes To maximise the disinfection performance of the UV device, the water passing through the chamber should be high quality prefiltered to reduce the suspended solids content and discolouration. Water having high iron content will require special pre-treatment. The globe should be removed and cleaned at least four (4) times per year together with the quartz sleave to guarantee the UV r
