Different Types of Ultra Violet Disinfection Devices

A little understanding of the system and its construction would assist in appreciating the process of Ultra Violet treatment. In a typical ultra violet treatment device, there is a cylindrical chamber that houses the ultra violet bulb along its central axis. The bulb is encased by a quartz glass sleeve and the whole unit is so designed that the water flows parallel to the bulb. The bulb surely requires electrical power to work and radiate the required energy to incapacitate organisms. To ensure that the water does not flow past the bulb too fast so that there is appropriate radiation contact time, the unit is equipped with a flow control device. Many studies have also established that turbulent (agitated) water flow provides more complete exposure of the organism to ultra violet radiation. This is now being ensured in newer models of Ultra Violet treatment devices.

In a good Ultra Violet treatment device, the unit should be housed in a body of stainless steel so as to provide protection to any electronic parts from corrosion. To assure they will be contaminant-free, all welds in the system should be plasma-fused and purged with argon gas.

When choosing one Ultra Violet unit over another - the major differences in ultra violet treatment units is in their capacity and optional features. Some advanced units that are safety conscious are equipped with ultra violet emission detectors that warn the user when the unit needs cleaning or when the light source is failing. Features such as this are very important to assure safe water supply. The warning systems could in the form of a light or a pro-active system that shuts off the water supply in case of failing safety standards. Therefore, a detector that emits a sound or shuts off the water flow is preferable to a warning light. This is especially applicable when the system might be located where a warning light would not be noticed immediately. This factor must be kept in mind when selecting an Ultra Violet treatment unit for your home usage.

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