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Method for treatment of indoor air pollution by combination of photocatalytic plasma and ultrasonic

A plasma and ultrasonic technology, applied in separation methods, chemical instruments and methods, air quality improvement, etc., can solve the problems of secondary pollution, poor treatment effect, and high usage costs, and achieve the effect of avoiding electrode fouling

Inactive Publication Date: 2014-09-17
郑巍 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method overcomes the problems of high use cost, easy to cause secondary pollution and poor treatment effect in the prior art

Method used

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  • Method for treatment of indoor air pollution by combination of photocatalytic plasma and ultrasonic
  • Method for treatment of indoor air pollution by combination of photocatalytic plasma and ultrasonic

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Embodiment Construction

[0018] The air is introduced into the streamer discharge reactor through the fan. The reactor uses a high-voltage DC power supply. The positive and negative poles are needle-plate electrodes, and the needles of the positive and negative poles are arranged alternately. The distance between the needle point 3 and the other electrode plate 1 is 2-5 cm, and the distance between the needle points 3 on the same electrode is 2-4 cm.

[0019] The discharge reactor is modular, and each module is composed of multiple sets of electrode plates, among which the positive plate 1 has more needles, and the negative plate 2 has fewer needles. There are nano-titanium dioxide catalyst nets 4 at both ends of the module inlet and outlet.

[0020] When the air passes through the discharge reactor, the air molecules are bombarded by high-energy electrons to form plasma. These high-energy particles are positively charged or negatively charged, which can attract particles of different polarities to for...

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Abstract

The invention discloses a method for treatment of indoor air pollution by combination of photocatalytic plasma and ultrasonic. The method includes the following steps: 1, a plasma discharge reactor is used to produce plasma free radicals, a strong electric field and ultraviolet light; 2, PM2.5 is absorbed through the strong electric; 3, the plasma free radicals are harmlessly treated by reaction of the plasma free radicals and VOCs (volatile organic chemcials) in the air; 4, incompletely reacted VOCs is further reacted in the presence of a TiO2 photocatalyst; 5, by-products NOx and O3 produced by the reaction are decomposed by a safe catalyst; 6, water or non-toxic organic absorbent and tail gas are mixed fully by an ultrasonic reactor, and fully react in a filling area, and remaining particles and VOCs are left in the organic absorbent; and 7, a tourmaline loaded nano titanium dioxide filler is used in the filling area. The method has the advantages of low energy consumption, small occupation of land, low noise, wide application range, and safe and reliable operation.

Description

technical field [0001] The invention relates to a method for treating indoor air pollutants with nano photocatalytic streamer discharge plasma combined with ultrasonic organic matter absorption technology, which belongs to the technical field of atmospheric control. Background technique [0002] With the increasing air pollution, the occurrence of smog is getting higher and higher, the frequency is getting faster, and the duration is getting longer. PM2.5, as an important indicator of smog, directly affects people's life safety and quality. PM2.5 refers to particulate matter with a diameter of ≤2.5 microns in the atmosphere, also known as particulate matter that can enter the lungs. It has a big impact on air quality and visibility etc. PM2.5 poses a serious threat to human health due to its small particle size, large specific surface area, easy attachment of various toxic and harmful pollutants, and direct entry into human alveoli. Due to the small particle size of PM2.5,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/74B01D53/86B01D53/72B01D53/56B01D53/66B03C3/017
CPCY02A50/20
Inventor 郑巍肖玲李昌国
Owner 郑巍
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