Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof

A technology for heavy metal ions and light source devices, applied in separation methods, chemical instruments and methods, water pollutants, etc., can solve problems such as complex devices, harm to human body, high cost, etc., and achieve simple preparation methods, high degradation rates, and high removal rate effect

Inactive Publication Date: 2013-10-30
SUZHOU SUNLIGHTS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned patent documents 1 and 2 mainly introduce a device for treating water using ultraviolet LED nanophotocatalysis. The structure of this device is relatively fixed and complicated, and it is only suitable for small-scale water treatment applications, and it is difficult to flexibly adjust the application
In addition, patent documents 1-3 all use ultraviolet LED lamps, which have disadvantages such as high cost, inconvenient use, and harmful to human body.
Compared with white LED, the luminous efficiency of UV LED light source is lower, resulting in low efficiency of UV irradiation
[0009] There are also researches on solar photocatalytic degradation and treatment of pollutants, and great achievements have been made, but solar photocatalytic technology is generally still in the pilot stage, and there is still a certain period of time before large-scale industrial production.
Moreover, the current treatment devices that use sunlight as the catalytic light source generally have the following defects: 1) The current device can only use powder photocatalyst; 2) Due to the limitation of the reaction vessel, it can only be used for small water treatment; 3) Compared with the device complex

Method used

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  • Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof
  • Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof
  • Light source device for removing organic matters and heavy metal ions by visible light and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A light source device for removing organic matter and heavy metal ions with visible light, in the form of LED bulbs. The light source adopts a visible continuous wave band with a radiation wavelength of 400-700 nm, and a color temperature of one white LED light source with a high color temperature of 7000-10000 K, a medium color temperature of 5000-7000 K, and a low color temperature of 3000-5000 K. The structure diagram of the light source is shown in figure 1 As shown, the LED chip 2 is set on the LED light source substrate 1, and the LED light source cover 3 is set on the LED chip 2. The outside of the LED light source cover 3 is coated with a catalyst film layer 4. The LED light source cover 3 can be spherical. Rectangular or other surfaces or polyhedra.

[0043] LED light source cover 3 adopts polyethylene, and then prepares TiO on the polyethylene cover by pulling method 2 -CdS photocatalyst film.

[0044] Its preparation includes the following steps:

[0045]...

Embodiment 2

[0056] A light source device for removing organic matter and heavy metal ions with visible light, in the form of LED bulbs. The light source adopts a white LED light source with a radiation wavelength of 400-700 nm in the visible continuous band and a color temperature of 6000 K.

[0057] The outer cover of the light source is made of polyethylene, and then Bi is prepared by pulling method on the polyethylene outer cover. 2 o 3 Photocatalyst film.

[0058] Its preparation includes the following steps:

[0059] 1) Preparation of photocatalyst

[0060] 1M Na(OH) 2 The solution was slowly added dropwise to 20 ml of 0.05 mol / l bismuth nitrate solution to make the pH of the solution = 9, then the solution was put into a 35 ml microwave tube, stirred at room temperature for 1 hour, and then put into the microwave reaction synthesis In the instrument, under the conditions of temperature 150 °C and power 100 W, Bi 2 o 3 catalyst of light.

[0061] 2) Coating of LED light sourc...

Embodiment 3

[0067] A light source device for removing organic matter and heavy metal ions with visible light, which adopts the form of LED light source tube, the radiation wavelength is 400-700 nm visible continuous band, and the color temperature is 6000 K.

[0068] 1) The lamp tube is made of glass tube, and the outside of the tube is coated with N-TiO 2 catalyst of light. The LED light source is placed at one end, and the other end is a reflector. After sealing, it is used for the decomposition of organic matter in the solution;

[0069] 2) The lamp tube is made of glass tube, and the outside of the tube is coated with N-TiO 2 catalyst of light. The LED light source is on one side (the same structure as the existing lighting source lamp tube), which can be used for air purification and general lighting.

[0070] Its preparation includes the following steps:

[0071] 1) Preparation of photocatalyst

[0072] Take 4 ml of butyl titanate and add it dropwise in 10 ml of absolute ethano...

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Abstract

The invention provides a light source device for removing organic matters and heavy metal ions by visible light. The light source device adopts a visible light LED (Light Emitting Diode) as a light source. The invention further provides a preparation method of the light source device for removing the organic matters and the heavy metal ions by the visible light. The light source device disclosed by the invention has high removing rate of the organic matters and the heavy metal ions, can be used for treating pollutants in water and can also be used for degrading the pollutants in the air; meanwhile, the light source device can also be used for common illumination. Compared with the prior art, the light source device has the advantages of high photocatalytic degradation rate, no pollution, long service life, low cost and the like, and is good for large-scale application and universalness of photocatalysis, and the preparation method is simple.

Description

technical field [0001] The invention relates to the fields of water treatment and air purification, in particular to a light source device for removing organic matter and heavy metal ions. Background technique [0002] With the rapid development of social economy and the acceleration of urbanization, the treatment and reuse of sewage and the removal of harmful substances in the air have attracted great attention from governments and people in various countries. In terms of harmful gases in the environment, indoor harmful gases such as formaldehyde released from decorative materials and volatile organic compounds such as methyl mercaptan produced in the living environment, even a small amount can cause discomfort to people and seriously affect people's health. In addition, the residual heavy metal ions in water are a kind of pollutants that are often discharged in the process of industrial steelmaking, metallurgy, mining and electroplating. Excessive intake of heavy metal io...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30B01D53/86B01D53/44C02F101/20C02F101/30
CPCY02W10/37
Inventor 孙卓潘丽坤刘心娟吕甜
Owner SUZHOU SUNLIGHTS TECH
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