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A system and method for remediating groundwater in an in-situ segmented screen well

A technology of groundwater and sieve holes, applied in the restoration of contaminated soil, etc., can solve the problem of low efficiency of groundwater restoration, achieve the effect of improving restoration efficiency, reducing project cost, and reducing investment

Active Publication Date: 2022-03-18
HOHAI UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the inefficiency of low groundwater repair efficiency due to the inability to fully mix the repair fluid and groundwater pollutants in the prior art, and provide a system and method for repairing groundwater in situ segmented sieve wells. The technical scheme is as follows:

Method used

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  • A system and method for remediating groundwater in an in-situ segmented screen well
  • A system and method for remediating groundwater in an in-situ segmented screen well
  • A system and method for remediating groundwater in an in-situ segmented screen well

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Embodiment 1

[0026] An in-situ segmented sieve well repair system for groundwater, including a sieve well 6 arranged underground in the area 1 to be repaired, the sieve well 6 has a cavity for injection of repair fluid inside, and the side wall of the sieve well 6 A plurality of mesh layers 601 are arranged sequentially from top to bottom, and the mesh layers 601 include multiple groups of mesh holes.

[0027] Specifically, in this embodiment, multiple sets of sieve holes are evenly distributed.

[0028] Specifically, in this embodiment, it also includes a repairing liquid medicine tank 3, which is connected to the water pump 4, and the output pipe of the water pump 4 goes deep into the cavity of the screen well 6, and continuously injects the repairing liquid into the cavity.

[0029] Specifically in this embodiment, the output pipe of the water pump 4 extends into the bottom of the cavity. Extending into the bottom of the cavity can prevent sedimentation and keep the liquid level stable...

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Abstract

The invention discloses a system and method for repairing groundwater in situ segmented sieve wells. A plurality of sieve layers are sequentially arranged on the wall from top to bottom, and the sieve layer includes multiple sets of sieve holes. Also disclosed is a method, comprising the following steps: obtaining hydrogeological parameters and pollutant parameters of groundwater polluted areas; determining remediation fluid parameters and optimal water injection intervals based on the hydrogeological parameters and pollutant parameters; Sieve wells; according to the optimal water injection interval, a segmented sieve layer is set on the well wall of the sieve well; repair fluid is injected into the sieve well. The invention transports the repair fluid to the ground through the segmented sieve wells, and separates the repair fluid into multiple plumes through the segmented sieve layer, thereby enlarging the contact area between the repair fluid and groundwater pollutants, and improving the pollution and repair efficiency. Fluid mass exchange flux and reaction mixing efficiency.

Description

technical field [0001] The invention relates to a system and method for repairing groundwater in an in-situ segmented sieve well, and belongs to the technical field of in-situ repairing of groundwater. Background technique [0002] With the increasing pollution of groundwater worldwide and the increasing demand for water resources, the efficiency of groundwater remediation becomes more and more important. In-situ groundwater remediation technology is to inject remediation fluid into the polluted aquifer, and degrade the pollutants through biochemical reactions. However, due to the slow water flow in the groundwater system, the diffusion coefficient is small, so that the remediation fluid and the pollutants cannot be fully mixed. Therefore, the present invention proposes a method for in-situ segmental sieve hole restoration of groundwater that improves the efficiency of groundwater pollution restoration and reduces energy consumption and labor costs. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00B09C1/08
CPCB09C1/002B09C1/08B09C2101/00
Inventor 叶逾许文瑜张宇鲁春辉井淼谢一凡
Owner HOHAI UNIV
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