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Multi-path purging device for removing VOC in water sample

A water sample and bypass technology, applied in the direction of water pollutants, degassed water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of lack of suitable existing devices, difficulty in ensuring consistent flow rate, and difficulty in selecting flow rate In order to achieve consistent aeration time, convenient operation and convenient timing

Pending Publication Date: 2019-07-30
SHANGHAI ANJIE ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The traditional method of treating VOC in water samples includes the heating-explosion method. One of the important factors affecting the detection results is the use of a suitable standard error receipt to calibrate the analytical curve. However, the preparation of the standard sample tube requires the precise injection of the standard liquid The thermal desorption tube equipped with adsorbent is purged at a specific flow rate and specified time to simulate the actual air sampling process as much as possible, but there are no instruments and devices available on the market, how to achieve accurate gas flow and time control and no suitable existing installation
Moreover, it is usually necessary to process multiple samples at the same time, and it is necessary to ensure that the processing time and gas flow rate of multiple samples are strictly consistent. When the gas flow rate is small, there will be large errors in measuring the flow rate with a flowmeter, and it is difficult to choose a suitable flowmeter; and The current test devices are all manually controlled. Manual operation requires manual operation for each flow adjustment and timing, and it is not easy to ensure consistent flow and timing each time, which will bring large manual errors; VOC is a toxic substance, manual operation , causing harm to the body of the experimenter, not safe enough

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  • Multi-path purging device for removing VOC in water sample

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Effect test

Embodiment 1

[0032] A multi-channel purging device for removing VOC in water samples, such as figure 1 As shown, it includes the gas source and gas distribution mechanism; the gas source is the air pump 1, the gas distribution mechanism is made of aluminum metal, and the surface of the aluminum metal is painted to ensure that it will not be corroded in an acid-base environment for a long time . The gas distribution mechanism includes a main channel 3 connected to the gas pump pipeline, and the main channel 3 is provided with 6 gas branches 4 with the same flow area, specifically a circular tubular branch with a diameter of 1 cm; each gas branch 4 has a A branch circuit switch is provided to control the on-off of the gas circuit; the gas branch circuit 4 extends into the sample bottle 2 containing the water sample to be treated through the pipeline. The main channel 3 is a cuboid structure, and the gas branch 4 is evenly arranged on one side of the cuboid structure. The spacing of the gas...

Embodiment 2

[0037] A multi-channel purging device for removing VOC in water samples, such as figure 1 As shown, it includes a gas source and a gas distribution mechanism; the gas source is an air pump 1, and the gas distribution mechanism is made of aluminum metal, and the surface of the aluminum metal is painted. The gas distribution mechanism includes a main channel 3 connected to the gas pump pipeline, and the main channel 3 is provided with 6 gas branches 4 with the same flow area, specifically a circular tubular branch with a diameter of 0.8 cm; each gas branch 4 is Each is equipped with a branch circuit switch for controlling the on-off of the gas circuit; the gas branch circuit 4 extends into the sample bottle 2 containing the water sample to be treated through the pipeline. The main channel 3 is a cuboid structure, and the gas branch 4 is evenly arranged on one side of the cuboid structure. The distance between the gas branch 4 is 0.2 times the length of the side of the cuboid st...

Embodiment 3

[0041] A multi-channel purging device for removing VOC in water samples, such as figure 1As shown, it includes a gas source and a gas distribution mechanism; the gas source is an air pump 1, and the gas distribution mechanism is made of aluminum metal, and the surface of the aluminum metal is painted. The gas distribution mechanism includes a main channel 3 connected to the gas pump pipeline, and the main channel 3 is provided with 10 gas branches 4 with the same flow area, specifically a circular tubular branch with a diameter of 1.5 cm; each gas branch 4 is Each is equipped with a branch circuit switch for controlling the on-off of the gas circuit; the gas branch circuit 4 extends into the sample bottle 2 containing the water sample to be treated through the pipeline. The main channel 3 is a cuboid structure, and the gas branch 4 is evenly arranged on one side of the cuboid structure. The distance between the gas branches 4 is 0.2 times the length of the side of the cuboid ...

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Abstract

The invention relates to a multi-path purging device for removing VOC in a water sample. The multi-path purging device comprises a gas source and a gas flow dividing mechanism. The gas flow dividing mechanism comprises a body channel connected with a gas source pipeline. A plurality of gas branches with the same flow area are arranged on the body channel. Each gas branch is provided with a branchswitch for controlling the open and close of a gas path. The gas branches extend into sample bottles with to-be-processed water samples through pipelines. Compared with the prior art, the multi-path purging device has the advantages of being simple and reliable in structure, high in cost performance, high in experiment efficiency, accurate in experiment data and the like.

Description

technical field [0001] The invention relates to a VOC purging device, in particular to a multi-path purging device for removing VOC in water samples. Background technique [0002] VOC is the English abbreviation of volatile organic compounds (volatile organic compounds). In the general sense, VOC refers to command volatile organic compounds; but the definition in the sense of environmental protection refers to a type of active volatile organic compounds, that is, the kind that will cause harm. volatile organic compounds. VOCs have a huge impact on human health. When the VOC in the room reaches a certain concentration, people will feel headache, nausea, vomiting, fatigue, etc. in a short time. decline and other serious consequences. The paint used in the process of home decoration is one of the main sources of indoor VOC. Therefore, the VOC content in decorative materials such as paints needs to be strictly limited. [0003] The traditional method of treating VOC in wate...

Claims

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Application Information

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IPC IPC(8): C02F1/20C02F101/30
CPCC02F1/20C02F2101/30
Inventor 牛军郝俊刘盼西刘丰奎刘剑萍王建李云华
Owner SHANGHAI ANJIE ENVIRONMENTAL PROTECTION TECH