Guangzhou Weigu Environmental_Ultraviolet Disinfection Equipment

导航

News and Information

Home

What factors affect the water treatment effectiveness of UV disinfectors? How should UV systems be installed and applied?

2021-03-17

Ultraviolet light is a type of electromagnetic wave that is invisible to the naked eye. It lies beyond the ultraviolet end of the visible spectrum, hence the name "ultraviolet." Depending on their different wavelength ranges, ultraviolet rays are classified into: A 、 B 、 C Three frequency bands, among which C The wavelength of the UV band is in... 240 – 260nm Among them, this is the most effective bactericidal wavelength range, and the wavelength point with the strongest intensity within this range is... 253.7nm Ultraviolet sterilizer ( UV The working principle of water treatment is to expose microorganisms (such as Cryptosporidium and Giardia) to ultraviolet radiation using UV lamps, which damages their... DNA And render it incapable of replication.

I. What is ultraviolet radiation?

Ultraviolet refers to the wavelength in sunlight. 10 From nano to 400 Nano (nm) The light can be divided into UVA( Ultraviolet rays A wavelength 320 ~ 400 Nano, long wave )、 UVB( Wavelength 280 ~ 320 Nano, medium wave )、 UVC( Wavelength 100 ~ 280 Nano, shortwave )。 UV Ultraviolet radiation is a band of energy within the electromagnetic spectrum. It’s a colorless, odorless, tasteless, and chemical-free method that ensures your water supply is safe and eliminates bacteria and other microorganisms that could make you sick. Ultraviolet light does not affect sediments, particulates, or other mineral contaminants that typically require other water treatment methods.

II. Effect Ultraviolet Disinfection Water Treatment Effect What are there? Factor

Lead to Common factors that reduce the effectiveness of UV disinfection Situation ：

1、 Particles and sediments. These suspended solids will prevent ultraviolet light from passing through the water. They can act as a shielding effect, “Protect” bacteria from ultraviolet radiation. Before water enters the UV system, suspended solids should be physically removed from the water through mechanical pre-filtration.

2、 Iron / Manganese can cause discoloration of the quartz sleeves surrounding UV lamps and reduce the transmission of ultraviolet light; it can also absorb ultraviolet energy. Iron and magnesium should be removed through pretreatment, or at least reduced to a level where the iron content does not exceed... 0.3 ppm And no more than manganese 0.05 ppm 。

3、 When water becomes hard, scale will accumulate on the quartz sleeve surrounding the UV lamp, blocking the passage of ultraviolet light. If the water is relatively hard, you should... UV Use a water softener before the unit.

4、 Other organic and inorganic solutes can also reduce the disinfecting effectiveness of ultraviolet light and should therefore be pre-treated before the UV device.

III. Limitations of Ultraviolet Water Treatment

An excessive bacterial count in water may require additional UV dosage or chemical treatment. Other factors, such as water temperature, should also be taken into consideration. UV devices are typically designed to operate at... 2 Celsius to 40 It operates best between Celsius degrees. Freezing can damage the UV device, while water temperatures above 40 degrees Celsius can reduce UV energy, thereby lowering the disinfection rate.

IV. Advantages of Ultraviolet Water Treatment Systems

Compared to other disinfection processes, ultraviolet disinfectors have many advantages:

1、 Effective And it’s fast. No tanks or reaction time required. No need to store chemicals.

2、 It does not alter the taste of water, making it ideal for bottling plants and food processing applications.

3、 Safe. No need to add or handle hazardous chemicals, nor does it pollute the environment.

4、 Compatible with all other water treatment processes. If an RO system is used, there is no need for dechlorination. In fact, ultraviolet light can protect against bacterial contamination, thereby enhancing the effectiveness of other water treatment methods.

5、 Economical: The cost of UV disinfection systems is almost always significantly lower than that of chemical treatment systems. Maintenance and repair costs for UV devices are very low. The electricity cost of operating a UV device in a home is roughly equivalent to the electricity cost of running a conventional light bulb.

6、 Easy installation. The UV device is very easy to install and requires minimal space.

V. Applications of Ultraviolet Water Treatment

Ultraviolet water treatment systems are commonly used in residential, commercial, and industrial applications as well as in wastewater treatment plants. Ultraviolet light is also an effective tool for controlling algae in ponds. UV technology can be applied to: homes, villas, hotels, motels, buildings, factories, rinsing processes, bottling plants, food processing facilities, cooling towers, breweries, hospitals, fisheries, farms, wineries—and the list goes on.

VI. Installation Instructions

After performing any water pretreatment, the UV water treatment unit should be installed before the cold and hot branch lines. If the required... UV If you're unsure about the size of the unit, always opt for the larger unit rather than the smaller one. Typically, the unit will be installed as close as possible to the distribution point. 8 Gallon / A UV device for minutes. Before commissioning and before use, all pipelines should be chemically flushed and rinsed.

Ultraviolet disinfection Efficient environmentally friendly and economical, in conventional disinfection processes Application middle Quick Got it Promote and popularize its use. Ultraviolet light will not change. Water quality , also No additional side effects were reported. For many Engineering In terms of application, it is about Dirty The ideal choice for water disinfection.