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Air humidification device applied to determination of soil-air distribution coefficient of semi-volatile organic contaminants

A technology of organic pollutants and distribution coefficients, applied in the field of humidification devices, can solve problems such as poor air tightness, achieve the effects of reducing leak detection steps, increasing friction, and convenient operation

Inactive Publication Date: 2016-10-12
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When connecting, the combination of the ring-shaped glass protrusion and the PTFE tube is more tightly, which solves the problem of poor air tightness and prevents air leakage

Method used

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  • Air humidification device applied to determination of soil-air distribution coefficient of semi-volatile organic contaminants

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 Shown, the present invention is a kind of air humidification device, and it is made up of inlet end 1, gas-liquid separation zone 2 and outlet end 3. In order to be more tightly combined with the polytetrafluoroethylene tube 8 and prevent air leakage, the air inlet end 1 and the air outlet end 2 are processed with annular glass protrusions 7 . The liquid filled in the gas-liquid separation zone 2 is high-purity water when the temperature is ≥0°C, and saturated CaCl when the temperature is 2 Solution 4.

[0020] The air enters from the inlet port 1, disperses through the glass sand plate 9, fully contacts with the solution 4 in the gas-liquid separation zone 3, and then discharges from the air outlet port 2, so as to achieve the humidification effect. When the solution 4 is consumed, the glass stopper 5 is pulled out, and the required...

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Abstract

The invention relates to an air humidification device applied to determination of the soil-air distribution coefficient of semi-volatile organic contaminants, and the air humidification device can be applied to the determination of the soil-air distribution coefficient of the semi-volatile organic contaminants. The air humidification device consists of an air inlet end, an air-liquid separation region and an air outlet end, wherein an annular glass protrusion is processed at the air inlet end, and an annular glass protrusion is processed at the air outlet end, so that combination of the air inlet end, the air outlet end and polytetrafluoroethylene tubes is tight, and the air impermeability of the combined place is strengthened; liquid filled in the air-liquid separation region is high-purity water or a saturated CaCl2 solution; in addition, a feeding tube with a glass plug is added to a spheric region, so that the distribution balance time is shortened, and frequent detaching of the air humidification device is also avoided. When the soil-air distribution coefficient of the semi-volatile organic contaminants is determined, the humidification manner of air can be simplified through the air humidification device disclosed by the invention, and the air humidification device has the characteristics of being quick, easy to operate and the like.

Description

technical field [0001] The invention relates to an air humidifying device in the experimental field of pollutant environmental distribution behavior, in particular to a humidifying device required for measuring the soil-air partition coefficient of semi-volatile organic pollutants. Background technique [0002] When measuring the soil-air partition coefficient of semi-volatile organic pollutants, it is necessary to pre-humidify the air so that when it passes through the polluted soil, it will humidify the soil so that the relative humidity (RH) of the soil reaches 100%. This is because the adsorption process of pollutants in the soil is affected by temperature, soil organic matter, etc. When the soil RH>99%, under the action of capillary force, water occupies a large part of the soil pore space, which greatly reduces The adsorption of pollutants at the air / water interface is prevented, and the mineral surface is completely covered by water molecules, so that the adsorptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 何欣韩煦
Owner DALIAN UNIV OF TECH
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