Layered acquisition apparatus and monitoring method for soil gas

A collection device and soil technology, which is applied in the field of soil gas stratified collection devices, can solve the problems of poor air tightness of gas wells, affect the quality of soil gas collection, and the collected gas cannot truly reflect the real situation, so as to prevent mixing and ensure collection quality. Effect

Pending Publication Date: 2017-10-24
南京贻润环境科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the problem that when the existing monitoring wells are used to collect the gas in the soil, the air tightness of the gas well is poor, which affects the collec

Method used

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  • Layered acquisition apparatus and monitoring method for soil gas
  • Layered acquisition apparatus and monitoring method for soil gas
  • Layered acquisition apparatus and monitoring method for soil gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] like figure 1 As shown, a soil gas layered collection device in this embodiment includes a well pipe body, and the well pipe body includes alternately arranged filter sections 102 and interlayer sections 101, and the well pipe body corresponding to the interlayer section 101 A packing plate 4 is provided inside, and a connection hole 401 is processed on the packing plate 4, and the interior of the well pipe body is divided into a plurality of sampling cavities by the packing plate 4, and the filter section 102 corresponds to the wall of the well pipe With sieve holes. The well pipe body is also provided with multiple sets of gas production pipes with open bottoms, and the bottoms of the gas production pipes pass through the connecting holes 401 on the packing plate 4 and extend into different sampling cavities. In this embodiment, through a single drilling, the well pipe is put into the well by using the Eprobe environmental drilling rig, and the sampling chamber is fo...

Embodiment 2

[0053] like figure 1 As shown, a soil gas layered collection device in this embodiment includes a well pipe body, and the well pipe body includes alternately arranged filter sections 102 and interlayer sections 101, and the well pipe body corresponding to the interlayer section 101 A packing plate 4 is provided inside, and the inside of the well pipe body is divided into multiple sampling cavities by the packing plate 4, and the wall of the well pipe corresponding to the filter section 102 is provided with screen holes; There are multiple sets of gas sampling tubes with open bottoms and extending into different sampling cavities. The sealing plate 4 of this embodiment is made of low adsorption material, and the inlet pipe and the outlet pipe are made of UPVC material, so as to ensure that the inlet pipe and the outlet pipe are not easy to absorb VOCs and have strong corrosion resistance, so that the device can be used for a long time and prolong Its service life and further g...

Embodiment 3

[0064] like figure 1 As shown, a soil gas layered collection device in this embodiment includes a well pipe body, and the well pipe body includes alternately arranged filter sections 102 and interlayer sections 101, and the well pipe body corresponding to the interlayer section 101 A packing plate 4 is provided inside, and the inside of the well pipe body is divided into multiple sampling cavities by the packing plate 4, and the wall of the well pipe corresponding to the filter section 102 is provided with screen holes; There are multiple sets of gas sampling tubes with open bottoms and extending into different sampling cavities. The packing plate 4 of this embodiment is made of low adsorption material, and both the air inlet pipe and the air outlet pipe are made of stainless steel. The above-mentioned packing plate 4 is processed with a connecting hole 401, and the two ends of the connecting hole 401 are provided with a connecting pipe 5, and the connecting pipe 5 adopts a t...

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PUM

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Abstract

The invention discloses a layered acquisition apparatus and monitoring method for soil gas, belonging to the technical field of soil monitoring. The layered acquisition apparatus comprises a well casing body; the well casing body comprises filtering sections and interlayer sections; sealing and separating plates are arranged in the parts, corresponding to the interlayer sections, of the well casing body; the interior of the well casing body is divided into a plurality of sampling chambers by the sealing and separating plates; the parts, corresponding to the filtering sections, of the wall of the well casing body are provided with sieve pores; the well casing body is also internally provided with a plurality of groups of gas sampling pipes having opened bottoms and located in different sampling chambers; and each group of gas sampling pipes comprises a gas inlet pipe and a gas outlet pipe which are correspondingly arranged. As the layered acquisition apparatus is placed in a wellhole, the acquisition apparatus can simultaneously acquire and monitor to-be-detected gas at different lengths and effectively guarantees gas sampling quality, so the accuracy of monitoring results of soil gas is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of soil monitoring, and in particular relates to a soil gas layered collection device and a monitoring method. Background technique [0002] Volatile organic pollutants in soil have been paid attention to for a long time, as a special kind of soil pollution, because of its hidden, latent, long-term and volatile properties different from other pollutants, and because of its The composition is complex and harmful, and it is listed as a potentially dangerous toxic pollutant in the environment that should be prioritized for control. [0003] Volatile organic pollutants in the soil are mainly petroleum hydrocarbons. These pollutants are discharged into the environment, which will bring serious consequences, such as: threatening the water quality safety of groundwater sources; polluting the atmospheric environment; changing soil characteristics, affecting agricultural production, etc. At the same time, the accumu...

Claims

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Application Information

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IPC IPC(8): G01N1/22G01N1/26G01N30/00G01N33/00
CPCG01N1/2205G01N1/2294G01N1/26G01N30/00G01N33/0004
Inventor 尹业新徐敏陈樯王磊龙涛
Owner 南京贻润环境科技有限公司
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