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Device capable of carrying out real-time separation and detection on photocatalytically degraded product of pollutant

A technology for real-time separation and degradation products, applied in measuring devices, material separation, color/spectral characteristic measurement, etc., can solve the problems of complex separation system, difficult operation, and imperfect detection, etc., achieve convenient reaction conditions and realize real-time separation Effect

Pending Publication Date: 2017-05-31
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese utility model patent CN205011533U discloses an ultrasonic-photocatalytic combined reaction device, which effectively degrades organic wastewater, mineralizes most of the organic pollutants, and has the function of sterilization and disinfection, but its light source is not replaceable and has no Real-time separation and detection of degraded intermediate products; Chinese utility model patent CN201325911Y discloses online monitoring double-membrane water purification equipment. Separation; Chinese utility model patent CN203513323U discloses a photocatalytic intelligent device that can recycle and degrade high-concentration organic matter in industrial wastewater. Real-time separation; Chinese invention patent CN102151534B, although there is a separation system (condenser and return pipe) and a detection system, the separation system is too complicated and difficult to operate. The detection system only uses gas chromatography (GC), and the detection is not perfect

Method used

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  • Device capable of carrying out real-time separation and detection on photocatalytically degraded product of pollutant
  • Device capable of carrying out real-time separation and detection on photocatalytically degraded product of pollutant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1 Real-time separation of liquid phase fragments of degradation products and detection by UV-Vis photometer

[0051] 1) Choose an ordinary glass chromatography column with a diameter of 40mm and an effective length of 203mm, and install it in advance. Make sure that the light source is a xenon lamp, replace it with a xenon lamp tube, and inject condensed water;

[0052] 2) Close the drain valve 10, and make p25 (100mg) and 100mL concentration 1×10 -5 mol / L Rhodamine B is mixed and added to the photocatalytic reaction device;

[0053] 3) Turn on the pump A, and let in the air, and do a corresponding test at the air outlet;

[0054] 4) Turn on the lamp source current knob, adjust the current, and make the current stable at 9A;

[0055] 5) After photoreaction for a period of time, close the bottom valve 16, open the discharge valve 10, take a sample, find the corresponding developing agent by thin layer chromatography (TLC), the stationary phase is 200-300 mesh s...

Embodiment 2

[0058] Example 2 Real-time separation of liquid phase fragments of degradation products and detection by gas chromatography-mass spectrometry

[0059] 1) Choose a plexiglass chromatography column with a diameter of 46mm and an effective length of 203mm, and install it in advance. Make sure that the light source is a xenon lamp, replace it with a xenon lamp tube, and inject condensed water;

[0060] 2) Close the drain valve 10, and the concentration of cobalt porphyrin catalyst (100mg) and 100mL is 1×10 -4 After mixing mol / L p-nitroaniline, add it into the photocatalytic reaction device;

[0061] 3) Turn on the pump A, and let in the air, and do a corresponding test at the air outlet;

[0062] 4) Turn on the lamp source current knob, adjust the current, and make the current stable at 8A;

[0063] 5) After photoreaction for a period of time, close the bottom valve 16, open the discharge valve 10, take a sample, find the corresponding developing agent with thin layer chromatogr...

Embodiment 3

[0066] Example 3 Degradation product gas phase fragment detection

[0067] 1) Choose an ordinary glass chromatography column with a diameter of 40mm and an effective length of 254mm, and install it in advance, determine the light source as an ultraviolet lamp, replace it with an ultraviolet lamp, adjust a certain intensity, and feed condensed water;

[0068] 2) Close the drain valve 10, and make p25 (100mg) and 100mL concentration 1×10 -5 mol / L formaldehyde is mixed and added to the photocatalytic reaction device;

[0069] 3) Close the intake valve 13, the ultraviolet detection valve 7, observe the air outlet flowmeter 6, open the carbon dioxide measuring instrument valve 8, and can monitor in real time by the carbon dioxide measuring instrument C (its sensitivity is 0.1ppm, and the detection range is 0 to 10000ppm), so it can Calculate the mineralization rate;

[0070] 4) After the reaction, purify and disinfect the reaction device (determine the light source as an ultravio...

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Abstract

The invention belongs to the technical fields of sewage treatment and environmental protection, and relates to a device capable of carrying out real-time separation and detection on a photocatalytically degraded product of a pollutant. The device comprises a photocatalytic reaction bottle, a replaceable light source, an aeration device, a chromatographic column and a real-time separation and detection device, wherein the top and the bottom of the photocatalytic reaction bottle are provided with a top opening and a bottom opening respectively; a bottle body of the photocatalytic reaction bottle is provided with a gas inlet and a gas outlet; the replaceable light source is inserted into the photocatalytic reaction bottle through the top opening of the photocatalytic reaction bottle; the aeration device is communicated with the interior of the photocatalytic reaction bottle through the gas inlet in the bottle body of the photocatalytic reaction bottle; the chromatographic column is communicated with the bottom opening of the photocatalytic reaction bottle; the real-time detection and separation device is communicated with the chromatographic column. The device has advantages that the real-time separation and detection can be carried out on the photocatalytically degraded product of the pollutant, further, the light source and the chromatographic column can be replaced, and the like.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and environmental protection, and relates to a device capable of real-time separation and detection of pollutant photocatalytic degradation products. Background technique [0002] With the rapid development of the world economy, various pollutants produced by industrialization, automobileization and urbanization have seriously polluted the environment and endangered human health. Water quality declines, poisoning aquatic organisms to death, but the self-purification ability of natural degradation is limited, so photocatalytic degradation of toxic and harmful substances is very necessary. In recent decades, photocatalytic technology has effectively improved and protected the environment due to its outstanding advantages such as mild reaction conditions, low energy consumption, and greatly reduced environmental pollution. [0003] It is urgent to develop new photocatalytic degradation inst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/32C02F1/72C02F1/78G01F1/00G01N30/02G01N21/33
CPCG01F1/00G01N21/33G01N30/02C02F1/30C02F1/32C02F1/725C02F1/78C02F2201/3225
Inventor 陈连清张成江
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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