Low-permeability contaminated site cyclically-controllable underground water remediation system and method

A groundwater remediation, low-permeability technology, applied in polluted groundwater/leachate treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems such as difficult application, reduce remediation costs, and solve tailing phenomenon , the effect of reducing the risk of recontamination

Inactive Publication Date: 2016-12-07
北京德瑞科森环保科技有限公司
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  • Application Information

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Problems solved by technology

In addition, due to the installation of wall materials, it is necessary to excavate trenches of corresponding depth on the site. The depth of trenches is generally set according to the depth of the aquifer. Therefore, it is difficult for PRB technology to be applied to sites with deep groundwater in actual use.

Method used

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  • Low-permeability contaminated site cyclically-controllable underground water remediation system and method
  • Low-permeability contaminated site cyclically-controllable underground water remediation system and method

Examples

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Embodiment

[0033] A gas station in North China has been operating for many years and has polluted the groundwater aquifer where it is located. The groundwater level of the site is 8.94m-10.23m deep, the permeability coefficient is 0.5m / d, and the thickness of the aquifer is about 5.4m. The pollutants are mainly benzene series. The concentration is 20mg / L, and the range of pollution plume is 120m 2 .

[0034] A groundwater pumping well 4 is built near the center of the site pollution plume, and the depth of the screen pipe is set to 11m, and its length is 4.5m. Set five water injection wells 2 at a certain distance around the polluted plume 6, and build a polluted groundwater distribution pool 1 next to the pumping well 4, and connect the pumping well 4 and the sealed distribution pool 1 with the pumping aqueduct 7, and the other end of the distribution pool is connected to the polluted groundwater. Multi-level fortified disposal unit3. The disposal unit 3 is filled with zeolite, activa...

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Abstract

A low-permeability contaminated site cyclically-controllable underground water remediation system is provided, wherein the center of an underground water contaminant plume with a permeation coefficient of 1-0.01 m/d is provided with a pumping well, and the pumping well is connected with an underground water distributor tank through a pumping guide pipe; a plurality of water injection wells are arranged around the underground water contaminant plume, an injection guide pipe is arranged in each water injection well, and the injection guide pipes are connected with the underground water distributor tank through a contamination multi-reinforcement treatment unit. The invention also discloses a method remediating underground water contamination by using the above remediation system. A cyclic flow field is formed through artificial hydraulic control and provides continuous flushing for a contaminated area, thereby efficiently removing contaminants from underground water; the whole remediation process is simple, an adsorbing material is easy to change, operability is high, and remediation cost is low.

Description

technical field [0001] The invention belongs to the field of groundwater pollution restoration, and in particular relates to a groundwater restoration system suitable for low-permeability polluted sites with a permeability coefficient of 1-0.01m / d. [0002] The present invention also relates to a method for repairing polluted groundwater by the repair system. Background technique [0003] At present, the situation of groundwater pollution in my country is becoming more and more serious. The types of polluted sites are complex and there are many types of pollutants. Higher requirements are required for groundwater pollution remediation technology. Groundwater pollution remediation technologies mainly include ectopic extraction treatment and in-situ remediation technology, among which ectopic extraction technology has the characteristics of short remediation period, obvious effect, and strong controllability in practical applications, but its pollution is resolved after the aq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00
CPCC02F1/00C02F2103/06
Inventor 罗章李淑彦马志飞向猛张志新黄晓云张洁琼
Owner 北京德瑞科森环保科技有限公司
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