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In-situ pumping and injecting restoration device for polluted soil, restoring method and mounting method of restoration device

A polluted soil, in situ technology, applied in the restoration of polluted soil and other directions, can solve the problems of requiring a lot of equipment, high cost, complex construction process, etc., and achieve the effect of shortening the construction period, facilitating on-site construction, and reducing construction costs.

Active Publication Date: 2014-11-12
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The construction process of this method is complicated, requires a lot of equipment, and is expensive

Method used

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  • In-situ pumping and injecting restoration device for polluted soil, restoring method and mounting method of restoration device
  • In-situ pumping and injecting restoration device for polluted soil, restoring method and mounting method of restoration device

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Embodiment Construction

[0045] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] The plastic drainage board mentioned in the present invention is a non-woven (F) type drainage board ("Plastic Drainage Board" industry standard JC / T2112-2012), the width of the drainage board is set to be greater than 1000mm, and it can also be set according to the actual situation. Construction equipment can adjust the type and detailed parameters of the drainage board. The air pressure that the vacuum pump can provide is at least 1.5*10 6 Above Pa. Contaminated site pollutants include heavy metal pollutants, organic pollutants, and heavy metal-organic compound pollutants. The type of reagent added should be chosen according to the contaminant. The permeability coefficient of the polluted site is 1*10 -3 cm / s to 1*10 -6 cm / s, including any one or any combination of sand, silt, and clay. The slotting machine, the vacuum pump a...

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Abstract

The invention discloses an in-situ pumping and injecting restoration device for polluted soil. The in-situ pumping and injecting restoration device comprises a vertical isolating barrier, a first-stage water pumping and collecting pipe, a water injection pump, a water injection tank, a vacuum pump, a water storage tank and at least one purifying unit, wherein the purifying units are located in the vertical isolating barrier; a water outlet of the water injection tank is connected with a water inlet of the water injection pump through a pipeline; a water outlet of the water injection pump is connected with a water inlet of each purifying unit through a pipeline; a water outlet of each purifying unit is connected with a water inlet of the first-stage water pumping and collecting pipe; and a water outlet of the first-stage water pumping and collecting pipe is connected with the water storage tank through the vacuum pump. The restoration device can be used for restoring pollutants in soil in situ. Meanwhile, the invention also provides a restoring method of the restoration device and a mounting method of the restoration device, wherein the restoring method is convenient to operate, high in efficiency and capable of improving the soil restoration quality and greatly reducing the soil restoration cost, and by the mounting method, the restoration device is convenient to mount and short in mounting period.

Description

technical field [0001] The invention relates to the field of in-situ remediation of polluted sites, in particular to an in-situ injection remediation device for polluted soil, and a remediation method and installation method of the remediation device. Background technique [0002] Soil is an important part of the ecological environment and the basic condition for human survival. With the rapid development of industrialization and urbanization in our country, the closure and relocation of a large number of industrial enterprises have caused the problem of soil pollution to become increasingly prominent. Soil and groundwater in industrial sites and their surrounding areas are heavily polluted by heavy metals and organic matter. Even though the soil itself has a certain self-purification ability, it is urgent for human beings to take measures to repair the serious pollution in the country. Incomplete remediation of contaminated soil will inevitably lead to serious environment...

Claims

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Application Information

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IPC IPC(8): B09C1/08
Inventor 杜延军伍浩良宋德君魏明俐
Owner SOUTHEAST UNIV
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