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A Attenuation Periodic Soil Restoration Method

A soil remediation and periodic technology, applied in the field of soil remediation, can solve the problems of poor remediation effect and low remediation efficiency, and achieve the effects of reducing resource waste, saving materials, and strong flexibility

Active Publication Date: 2016-09-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method of attenuation periodical soil restoration to solve the problems of poor restoration effect and low restoration efficiency in the above-mentioned soil restoration

Method used

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  • A Attenuation Periodic Soil Restoration Method
  • A Attenuation Periodic Soil Restoration Method
  • A Attenuation Periodic Soil Restoration Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1. Select the soil area to be treated, set anode electrode in the groundwater upstream direction of the groundwater in the soil area, and set the cathode electrode in the lower direction.Applying the drug unit, setting the position of the near -cathode electrode between the poles can penetrate the reaction wall;

[0039] Step 2, wash the soil area with water in water, the scrubbing time is 10 ~ 12 hours;

[0040] Step 3. Inject heavy metal leaching fluid into the soil area through the underground medication unit to process heavy metal repair solution, and apply electric fields to the soil area at the same time.

[0041] Step 4. Open the DC power supply, turn off the DC power supply after 48 ~ 50 hours;

[0042]Step 5. Inject organic leaching solution into the soil area through the underground medication unit, perform organic substances to repair the leaching, and apply electric fields to the soil area.

[0043] Step 6, turn on the DC power supply, turn off the DC power...

Embodiment 2

[0047] The repair control system is specifically: anode electrode 2-1 set below the ground, cathode electrode 2-2, and permeable reaction wall 4, the permeable reaction wall 4 is set on anode electrode 2-1 and cathode electrodeThe position of near the cathode electrode 2-2 between 2-2; the anode electrode 2-1 is set in the anode room 1-1, the cathode electrode 2-2 is set in the cathode room 1-2, anode electrode 2-1, cathode electrode2-2 are connected to the two poles of power 3, and the power supply 3 is connected to the control device 16; the anode electrode 2-1 and the cathode electrode 2-2 are set at both ends of the soil area and can be formed at the soil area to be fixed to the soil area.Fully electric field.

[0048] The drug addition system includes a drug storage unit, an underground drug unit, and an input unit.The medicinal solution in the storage unit is transported to the underground drug unit and then applied the land for the land. The specific structure is figure 1 S...

Embodiment 3

[0056] Step 1. Select the soil area to be treated, set anode electrode in the groundwater upstream direction of the groundwater in the soil area, and set the cathode electrode in the downstream direction.Position settings can penetrate the reaction wall;

[0057] Step 2, turn on the pre-spraying system, wash the soil area for scrubbing, open the fifth valve 11-3, and transport the scrubbing solution in the water storage tank 21 to the spray pipeline network 26 for the scrubbing.The washing liquid was mainly water.The scrub is 10 ~ 12 hours, and the leaching rate is 0.05 ~ 0.10 m 3 / d, turn off the fifth valve 11-3 after the drying.

[0058] Step 3, turn on the drug adding system, open the third valve 11-2 and first valve 17, the first single channel peristaltic pump 19 starts the work, and the heavy metal sponsors in the heavy metal repair solution tank 22 is transported to the medicineIn the well 5, the fourth valve 11-1 is opened at the same time, and the wind turmoil 12 starts ...

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Abstract

The invention belongs to the technical field of soil remediation methods, and specifically relates to a periodic attenuation repair method, comprising the following steps: selecting a soil area to be treated, setting an anode electrode and a cathode electrode in the soil area to be treated, and placing a position close to the anode electrode between the two electrodes Set up an underground pesticide application unit, and set up a permeable reaction wall between the two electrodes near the cathode electrode; perform water leaching, heavy metal leaching, electric restoration, organic matter leaching, and electric restoration in sequence on the soil area to be treated, and repeat the standard restoration cycle in turn. 3 times, reduce the time in each step at the same time, reduce the washing time to 80%, 50%, and 25% of the standard repair cycle each time; reduce the power-on time of the DC power supply to 90% of the standard repair cycle each time , 80%, 70%, repaired. The attenuation periodic soil restoration method of the present invention can effectively reduce the waste of resources, improve the use value and restoration efficiency of the restoration device, all operations are closely connected, reliable and stable, and easy to operate.

Description

Technical field [0001] The invention is a technical field of soil repair method, which involves a periodic repair method of attenuation. Background technique [0002] With the rapid development of urban industrialization, the urban soil and groundwater industry and agricultural pollution gradually became serious, the soil structure and ecological environment were damaged, and the quality of groundwater worsening, which not only caused the agricultural developmentTherefore, soil repair is an important task that needs to be resolved urgently.Pollution in the soil is often not a single pollutant, but a composite pollution with multiple pollution coexistence. Especially in areas where industrial development is relatively common, heavy metal and organic pollution exist in the soil. [0003] In response to the above problems, a large number of research on soil repair has begun, and certain progress has been made.Repair repair is a very common chemical repair technology, which can be re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/02
Inventor 何理李小萌卢宏玮
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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