Researcher's Information
Physicochemical processing method for safe tap water
Running water is essential in our lives as we are use it for cooking, doing the laundry, bathing, and for drinking.
However, it has recently been discovered that a disease organism called cryptosporidium could be threatening the safety of water. Cryptosporidium gets discharged from infected warmblooded animals to survive and propagate in another warmblooded animal within a shell that is immune to disinfectant like chlorine.
Something that cryptosporidium is not immune to though is water being irradiated with ultraviolet light. However, if the amount of ultraviolet light is too small the disinfection process can be insufficient, but if too much is used the equipment or operation can be uneconomical. We are carrying out various inspections for use in the appropriate design and operation of ultraviolet disinfection.
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A Petri dish containing microorganisms is sterilized using an ultraviolet lamp.