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High-efficiency ultraviolet sterilizer

A technology of ultraviolet disinfection and sterilizer, applied in the field of disinfection devices, can solve the problems of casing pollution, disinfection efficiency, improvement, etc., and achieve the effects of reducing ultraviolet reflectivity, simple structure, and excellent corrosion resistance.

Inactive Publication Date: 2010-12-15
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main problems faced by UV sterilizers for drinking water and reclaimed water include the lifespan of UV lamps, casing pollution and the improvement of disinfection efficiency.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] The quartz glass tube coated with aluminum film is used as the ultraviolet reflection layer, wherein the aluminum film is vapor-deposited on the outer wall of the quartz glass tube to prevent the aluminum film from being corroded by water, and the thickness of the aluminum film is 0.2mm. The test was carried out on the cavity ultraviolet intensity test device based on the fluorescent glass probe, and the ultraviolet intensity distribution in the cavity of the common sterilizer with the same size and the sterilizer with an ultraviolet reflective layer was compared and measured. The test device is in the shape of a vertical barrel (inner diameter 95mm, height 400mm), with a low-pressure mercury lamp (pre-aged for more than 100 hours) installed in the center. The diameter is 23mm. The medium in the cavity is air. It can be seen from Table 1 that the ultraviolet intensity of the aluminum high-reflection layer sterilizer has a greater increase in the air medium.

[0020] T...

Embodiment 2

[0023] The quartz glass tube coated with aluminum film is used as the ultraviolet reflection layer, in which the aluminum film is evaporated on the outer wall of the quartz glass tube to avoid the aluminum film from being corroded by water. The thickness of the aluminum film is 0.2mm. UV intensity distribution. The aqueous solutions with different ultraviolet transmittances are prepared from potassium hydrogen phthalate and deionized water, and the transmittances at 254nm are respectively 95% (measured by HACH 5000 spectrophotometer). It can be seen from Table 2 that the ultraviolet intensity of the aluminum high-reflection layer sterilizer also increases to a large extent in the water medium.

[0024] Table 2 Comparison of internal ultraviolet intensity distribution of ordinary and aluminum high-reflection layer ultraviolet sterilizers in water medium

[0025]

Embodiment 3

[0027] Teflon is used as the ultraviolet reflective layer, lining the inner wall of the sterilizer (304 stainless steel tube). Using a fluorescent glass probe, compare and measure the ultraviolet intensity distribution inside the cavity of a common sterilizer of the same size and a PTFE-lined high-reflection layer sterilizer. As can be seen from Table 3, the ultraviolet intensity inside the PTFE-lined high-reflection layer sterilizer has increased to a greater extent.

[0028] Table 3 Comparison of UV intensity distribution inside ordinary and PTFE high-reverse layer sterilizers in air medium

[0029]

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Abstract

The invention discloses a high-efficiency ultraviolet sterilizer. The sterilizer provided by the invention comprises a sterilizer chamber, an ultraviolet light tube, a quartz glass sleeve and a sterilizer body with a water inlet and a water outlet; and an inner wall of the sterilizer chamber is also provided with an ultraviolet reflecting layer. The ultraviolet reflecting layer can be made of the quartz glass of which the surface is provided with aluminum or an aluminum alloy, or a fluorocarbon material. The high reflecting inner wall which is made of the quartz glass sleeve, the aluminum (the vacuum plating aluminum or an aluminum foil stuck outside) or the fluorocarbon material has the characteristics of high ultraviolet reflection, resistance to ultraviolet radiation, resistance to erosion and resistance to flow water impact; and compared with the inner wall of a normal stainless steel sterilizer, the inner wall of the chamber has the advantages that: when the inner wall of the chamber is irradiated by an ultraviolet lamp with the same power, the average ultraviolet light intensity inside the chamber can be increased by over 50 percent.

Description

technical field [0001] The invention relates to a device for disinfecting drinking water and reclaimed water by using ultraviolet light (UV). Background technique [0002] Ultraviolet disinfection technology is developing rapidly along with the deepening of human understanding of environmental protection. Ultraviolet light was first applied in 1910 to disinfect and sterilize drinking water. In the 1970s, with the increasing concern about the toxic by-products produced by chlorine disinfection and the breakthrough development of ultraviolet lamp technology, ultraviolet disinfection began to be applied as a clean disinfection technology. In 1970, the U.S. Environmental Protection Agency completed the first sewage ultraviolet disinfection project. Subsequently, ultraviolet disinfection technology has been widely used in the United States, Canada and Europe, and is widely used in the sterilization and disinfection treatment of drinking water, reclaimed water and sewage. So far...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/32
Inventor 强志民李梦凯李庭刚
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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