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Measuring device and method for measuring transmission sweep efficiency of restorative agent for in-situ repair

A measurement device and in-situ remediation technology, applied in the direction of measurement devices, surface/boundary effects, instruments, etc., can solve the problem of few pollutants removal and remediation of contaminated sites, no measurement device and calculation method, soil in-situ remediation technology There are no problems such as evaluation methods that affect efficiency, and achieve the effects of compact structure, convenient operation, and high degree of automation

Active Publication Date: 2019-08-27
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, remediation agents are used in oil displacement systems in oil field exploitation to enhance oil recovery, but are rarely used in the removal of pollutants and the remediation of contaminated sites
Invented patents only briefly mention sweep efficiency (such as patent CN201280048149.6 System and method for optimizing underground oil recovery), without specific measurement devices and calculation methods, and there is no sweep efficiency in soil in situ remediation technology means of assessment

Method used

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  • Measuring device and method for measuring transmission sweep efficiency of restorative agent for in-situ repair
  • Measuring device and method for measuring transmission sweep efficiency of restorative agent for in-situ repair
  • Measuring device and method for measuring transmission sweep efficiency of restorative agent for in-situ repair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 , a measuring device for in-situ repairing restoration agent transmission sweep efficiency, comprising a pumping unit B, a two-dimensional box structure C, an image acquisition unit D, an injection unit A, and an outflow unit E;

[0041] see figure 2 , image 3 , Figure 4 , the two-dimensional box structure is provided with a cover plate 13 of PMMA material, under the cover plate is a rectangular bottom tank 10 for containing matrix samples; the image acquisition unit D includes a camera and a data processing module connected with the camera, and the camera is located at Above the cover plate 13 of the two-dimensional box structure; there is a restoration agent inlet on one side wall of the bottom tank 10, and the restoration agent inlet is connected to the injection unit A; the side wall opposite to the side wall with the restoration agent inlet A liquid outlet pipe is arranged at the place, and the liquid outlet pipe 9 is connected with the pumpi...

Embodiment 2

[0046] Adopt the device of embodiment 1, in the bottom groove 10 of two-dimensional box body structure, fill respectively the quartz sand of different particle size: be respectively coarse sand (10~20 orders), medium sand (20~40 orders) and fine sand ( 40-70 mesh) quartz sand with three different particle sizes. Before the experiment, the quartz sand has to undergo a certain pretreatment, that is, select the quartz sand with a certain particle size that has been strictly sieved, soaked in acid, washed with water, and dried for later use.

[0047] After each layer of sand is filled, it is scraped and compacted until the bottom groove 10 is filled, and the sealing rubber pad 14 and the cover plate 13 are covered, and the fixing screws are tightened, according to figure 1 Connect the experimental setup in the order shown.

[0048] Open the injection module A and the pumping device module B, adjust the 1# peristaltic pump to a speed of 10rpm, the polymer solution can be sucked in...

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Abstract

The invention provides a determination device for a remediation agent transmission sweep efficiency of in-situ remediation. The device comprises a pump suction unit, a two-dimensional box structure, an image collection unit and an injection unit; the two-dimensional box structure is provided with a cover plate made of transparent materials, and a rectangular groove for containing matrix samples is formed below the cover plate; a camera of the image collection unit is located above the cover plate of the two-dimensional box structure; a remediation agent inlet is formed in the side wall of one side of the rectangular groove, and the remediation agent inlet is connected with the injection unit; a liquid outlet pipe is arranged on the side wall opposite to the side wall provided with the remediation agent inlet, and the liquid outlet pipe is connected with the pump suction unit. According to the method, the remediation agent transmission sweep efficiency under the condition of different pore volumes (PV) are accurately calculated; the determination device has the advantages of being high in automation degree, compact in structure, convenient to run and easy to operate, the price of the device is low, and scientific simulation equipment and calculation methods are provided for in-situ remediation research of underground water and soil.

Description

technical field [0001] The invention belongs to the field of soil regeneration, and in particular relates to a method for measuring the restoration effect of in-situ restoration and an adopted device. Background technique [0002] According to the different methods of remediation of contaminated soil, the remediation technology can be divided into ex-situ remediation and in-situ remediation. Because in situ repair is more direct, fast, economical and effective than ectopic repair, it is developing into a promising repair technology. If the repair fluid is directly injected into the polluted site, due to the heterogeneity of the site, the distribution of the repair fluid will be uneven during the injection process, that is, the repair fluid will preferentially enter the area with high permeability of large pores to form Fixed channels, and then form a flow around the small pores and low permeability areas, resulting in the repair fluid cannot enter the small pores and low pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00
Inventor 陈家军刘云松
Owner BEIJING NORMAL UNIVERSITY
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