CN106424114B - Contaminated soil barrier repair structure and method thereof - Google Patents
Contaminated soil barrier repair structure and method thereof Download PDFInfo
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- CN106424114B CN106424114B CN201610764806.7A CN201610764806A CN106424114B CN 106424114 B CN106424114 B CN 106424114B CN 201610764806 A CN201610764806 A CN 201610764806A CN 106424114 B CN106424114 B CN 106424114B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses a contaminated soil separation and restoration structure and a method thereof, the structure comprises a plurality of sewage absorption type plant mats, purification electrodes and a purification power supply, wherein each purification electrode and one sewage absorption type plant mat form a purification unit, each purification electrode comprises at least one positive plate and at least one negative plate, adjacent purification units are isolated through the sewage absorption type plant mats, each sewage absorption type plant mat comprises a positioning frame, a non-woven fabric outer layer, a polypropylene fiber coating layer, a planting base material and vegetation seeds, and the using method comprises five steps of setting an area, installing equipment, purifying operation, maintaining, dismantling the equipment and the like. The invention can effectively purify the polluted components in the soil, has small influence on the purified soil structure, effectively avoids the intervention of new substances in the purification process, and avoids the serious damage to the soil structure and the occurrence of secondary pollution in the purification process.
Description
Technical Field
The invention relates to a contaminated soil barrier repair structure and a method thereof, belonging to the technical field of soil treatment and purification.
Background
Due to the reasons of industrial and agricultural production, mineral development and the like, a large amount of current soil is polluted by pollutants such as pesticide residues, heavy metal ion residues and the like in different degrees, on one hand, the soil structure is seriously polluted and damaged, the safety and reliability of land use are influenced, and serious land resource waste is caused, on the other hand, the serious secondary pollution phenomenon is easily caused to the surrounding ecological environment, geological disasters are caused, and the daily life safety of people is seriously threatened, so that aiming at the problem, the development of efficient soil purification and restoration equipment and purification method is urgently needed to meet the requirement of practical use.
Disclosure of Invention
The invention aims to overcome the defects and provide a contaminated soil barrier repair structure and a method thereof.
In order to realize the purpose, the invention is realized by the following technical scheme:
a polluted soil separation repairing structure comprises a pollution absorption type plant mat, purification electrodes and a purification power supply, wherein the purification electrodes are a plurality of, each purification electrode and one pollution absorption type plant mat form a purification unit, each purification electrode comprises at least one positive plate and at least one negative plate, the positive plates and the negative plates are electrically connected with the purification power supply, the positive plates and the negative plates are in series-parallel connection with the purification power supply, the number and the structure of the positive plates and the negative plates of the purification electrodes in the purification unit are the same and are distributed in parallel, the distance between the positive plates and the negative plates is not more than 3 times of the maximum side length of the positive plates and the negative plates, the positive plates and the negative plates are respectively embedded in soil to be purified and are distributed perpendicular to the horizontal plane, the upper surfaces of the positive plates and the negative plates are not lower than the upper surface of the soil to be purified, the pollution absorption type plant mats are a plurality of, and are uniformly distributed at the positive plates and the negative plates of the purification electrodes and are abutted to the surfaces of the positive plates and the negative plates, and all keep apart through soil absorption formula plant pad between adjacent each purification unit, soil absorption formula plant pad includes the locating rack, the non-woven fabrics is outer, the polypropylene fibre coating, plant substrate and vegetation seed, wherein gather the polypropylene fibre coating and be airtight cavity structures, the outer cladding of non-woven fabrics is outside gathering the polypropylene fibre coating and constitute the cultivation body, it inlays in the locating rack and offsets in waiting to purify soil and with positive plate and negative plate through the locating rack to cultivate the body, it all inlays in cultivating internally to plant substrate and vegetation seed, wherein the vegetation seed equipartition is in planting the substrate.
Furthermore, the positive plate and the negative plate of the purifying electrode are both in a mesh plate-shaped structure.
Furthermore, the positive plate and the negative plate of the purifying electrode both comprise a positioning chute and a conductive plate, wherein the two symmetrically distributed side surfaces of the conductive plate are embedded in the positioning chute through a sliding block and are in sliding connection with the positioning chute.
Furthermore, the planting substrate comprises soil, a water-retaining agent and a fertilizer, wherein the water-retaining agent and the fertilizer are uniformly distributed in the soil.
A method for blocking and repairing a structure of polluted soil comprises the following steps:
firstly, setting areas, analyzing pollutant components of soil to be purified, dividing the distribution areas of the soil to be purified according to main pollutant components, and selecting the areas which accord with the operation of isolation and repair equipment from the divided areas;
secondly, installing equipment, namely adjusting the quantity of the dirt absorption type plant mats, the purification electrodes and the purification power sources, the types of the dirt absorption type plant mats and the power of the purification power sources in the isolation repair equipment according to the regional area of the soil to be purified selected in the first step, then excavating positioning grooves at the edge positions of the regional area of the soil to be purified, respectively embedding the dirt absorption type plant mats and the purification electrodes into the soil to be purified through the positioning grooves, and finally electrically connecting the purification electrodes with the purification power sources;
thirdly, performing purification operation, namely turning on a power supply to supply power to each purification electrode, enabling soil in a soil region to be purified to form an electric field of a closed loop through a positive plate and a negative plate of the purification electrode, enabling pollutant ions adsorbed on the surface of soil particles in the soil region to be purified to carry charges, and gradually accumulating the pollutant ions to the positions of the positive plate and the negative plate according to the characteristics of the carried charges, and meanwhile, irrigating and watering the pollution absorption type plant mat through spraying equipment to promote the germination and growth of plant seeds;
and fourthly, maintaining, namely, according to the requirement of purification operation, on one hand, replacing the corrosion condition of each positive plate and each negative plate, on the other hand, regularly watering, irrigating and fertilizing the soil-suction type plant mat, and simultaneously trimming, maintaining and repairing the vegetation appearing in the soil-suction type plant mat until the pollutant content in the soil region to be purified reaches the standard.
And fifthly, dismantling the equipment, and dismantling and recycling the purification electrode and the purification power supply in the isolation repair equipment after the content of the pollutants in the soil region to be purified reaches the standard.
Furthermore, in the third step and the fourth step, spraying and humidifying operation can be carried out on the region of the soil to be purified between the positive plate and the negative plate through spraying equipment.
The device has the advantages of simple structure, flexible and convenient use, high reliability, flexible and reliable use and operation and low running energy consumption, can effectively purify the polluted components in the soil on one hand, has small influence on the purified soil structure on the other hand, effectively avoids the intervention of new substances in the purification process, and avoids the serious damage to the soil structure and the occurrence of secondary pollution in the purification process.
Drawings
FIG. 1 is a schematic view of the gas structure of the present invention;
FIG. 2 is a flow chart of the method of the present invention.
Detailed Description
Example 1
As shown in figure 1, a contaminated soil separation and restoration structure comprises a dirt-absorbing plant mat 1, a plurality of purification electrodes and a purification power supply 2, wherein each purification electrode and one dirt-absorbing plant mat 1 form a purification unit, each purification electrode comprises at least one positive plate 3 and at least one negative plate 4, the positive plates 3 and the negative plates 4 are electrically connected with the purification power supply 2, the positive plates 3 and the negative plates 4 are connected with the purification power supply 2 in a mixed mode, the number and the structure of the positive plates 3 and the negative plates 4 of the purification electrodes in the purification unit are the same and are distributed in parallel, the distance between the positive plates 3 and the negative plates 4 is not more than 3 times of the maximum side length of the positive plates 3 and the negative plates 4, the positive plates 3 and the negative plates 4 are respectively embedded in the soil 5 to be purified and are distributed vertically to a horizontal plane, the upper end faces of the positive plates 3 and the negative plates 4 are not lower than the upper surface of the soil 5 to be purified, 1 pad of soil absorption formula plant is a plurality of, the equipartition is in the positive plate 3 and the negative plate 4 department of purifying the electrode and offsets with positive plate 3 and the 4 surfaces of negative plate, and all keep apart through soil absorption formula plant pad 1 between adjacent each purification unit, soil absorption formula plant pad 1 includes locating rack 11, non-woven fabrics outer 12, polypropylene fibre coating 13, plant substrate 14 and vegetation seed 15, wherein polypropylene fibre coating 13 is airtight cavity structures, non-woven fabrics outer 12 cladding is outside polypropylene fibre coating 13 and constitutes the cultivation body, the cultivation body inlays in locating rack 11 and offsets in waiting to purify soil 5 and with positive plate 3 and negative plate 4 through the locating rack, plant substrate 14 and vegetation seed and all 15 inlay in cultivating the body, wherein 15 equipartitions of vegetation seed are in planting substrate 14.
In this embodiment, the positive electrode plate 3 and the negative electrode plate 4 of the purifying electrode are both in a mesh-plate structure.
In this embodiment, the positive electrode plate 3 and the negative electrode plate 4 of the purifying electrode each include a positioning chute 101 and a conductive electrode plate 102, wherein two symmetrically distributed side surfaces of the conductive electrode plates 102 are embedded in the positioning chute 101 through a slider 103 and are slidably connected to the positioning chute 101.
In this embodiment, the planting base 14 includes soil, a water retention agent and a fertilizer, and the water retention agent and the fertilizer are uniformly distributed in the soil.
As shown in fig. 2, a method for barrier repair of a structure of contaminated soil comprises the following steps:
firstly, setting areas, analyzing pollutant components of soil to be purified, dividing areas where the soil to be purified is distributed according to main pollutant components, and selecting areas which accord with the operation of isolation and repair equipment from the divided areas;
secondly, equipment installation, namely adjusting the quantity of the sewage suction type plant mats, the purification electrodes and the purification power supply in the isolation repair equipment, the plant types of the sewage suction type plant mats and the power of the purification power supply according to the regional area of the soil to be purified selected in the first step, then excavating positioning grooves at the edge positions of the regional area of the soil to be purified, respectively embedding the sewage suction type plant mats and the purification electrodes into the soil to be purified through the positioning grooves, and finally electrically connecting the purification electrodes with the purification power supply;
thirdly, performing purification operation, namely turning on a power supply to supply power to each purification electrode, enabling soil in a soil region to be purified to form an electric field of a closed loop through a positive plate and a negative plate of the purification electrode, enabling pollutant ions adsorbed on the surface of soil particles in the soil region to be purified to carry charges, and gradually accumulating the pollutant ions to the positions of the positive plate and the negative plate according to the characteristics of the carried charges, and meanwhile, irrigating and watering the pollution absorption type plant mat through spraying equipment to promote the germination and growth of plant seeds;
and fourthly, maintaining, namely, according to the requirement of purification operation, on one hand, replacing the corrosion condition of each positive plate and each negative plate, on the other hand, regularly watering, irrigating and fertilizing the soil-suction type plant mat, and simultaneously trimming, maintaining and repairing the vegetation appearing in the soil-suction type plant mat until the pollutant content in the soil region to be purified reaches the standard.
And fifthly, dismantling the equipment, and dismantling and recycling the purification electrode and the purification power supply in the isolation repair equipment after the content of the pollutants in the soil region to be purified reaches the standard.
In this embodiment, in the third step and the fourth step, a spraying device may be used to spray and humidify the region of the soil to be purified between the positive electrode plate and the negative electrode plate.
The device has the advantages of simple structure, flexible and convenient use, high reliability, flexible and reliable use and operation and low running energy consumption, can effectively purify the polluted components in the soil on one hand, has small influence on the purified soil structure on the other hand, effectively avoids the intervention of new substances in the purification process, and avoids the serious damage to the soil structure and the occurrence of secondary pollution in the purification process.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a pollute soil separation repair structure which characterized in that: the polluted soil separation and restoration structure comprises a pollution absorption type plant mat, purification electrodes and a purification power supply, wherein the purification electrodes are a plurality of, each purification electrode and one pollution absorption type plant mat form a purification unit, each purification electrode comprises at least one positive plate and at least one negative plate, the positive plates and the negative plates are electrically connected with the purification power supply, the positive plates and the negative plates are connected with the purification power supply in a mixed mode, the number and the structure of the positive plates and the negative plates of the purification electrodes in the purification unit are the same and are distributed in parallel, the distance between the positive plates and the negative plates is not more than 3 times of the maximum side length of the positive plates and the negative plates, the positive plates and the negative plates are respectively embedded in the soil to be purified and are distributed vertically to a horizontal plane, and the upper end faces of the positive plates and the negative plates are not lower than the upper surface of the soil to be purified, soil pick-up formula plant pad a plurality of, the equipartition is in the positive plate and the negative plate department of purifying the electrode and offsets with positive plate and negative plate surface, and adjacent each purification unit all keeps apart through soil pick-up formula plant pad, soil pick-up formula plant pad include locating rack, non-woven fabrics outer, polypropylene fibre coating, plant substrate and vegetation seed, wherein the polypropylene fibre coating be airtight cavity structures, the outer cladding of non-woven fabrics outside polypropylene fibre coating and constitute the cultivation body, the cultivation body inlay in the locating rack and through the locating rack inlay in waiting to purify soil and offset with positive plate and negative plate, planting substrate and vegetation seed all inlay in cultivating internally, wherein vegetation seed equipartition is in planting the substrate.
2. A contaminated soil barrier remediation structure according to claim 1, wherein: the positive plate and the negative plate of the purifying electrode are both in a screen plate-shaped structure.
3. A contaminated soil barrier remediation structure according to claim 1, wherein: the positive plate and the negative plate of the purifying electrode respectively comprise a positioning chute and a conductive plate, wherein the side surfaces of the conductive plate which are symmetrically distributed are embedded in the positioning chute through a sliding block and are in sliding connection with the positioning chute.
4. A contaminated soil barrier remediation structure according to claim 1, wherein: the planting substrate comprises soil, a water-retaining agent and a fertilizer, wherein the water-retaining agent and the fertilizer are uniformly distributed in the soil.
5. The use method of the contaminated soil barrier remediation structure of any one of claims 1-4, wherein: the method comprises the following steps:
firstly, setting areas, analyzing pollutant components of soil to be purified, dividing the distribution areas of the soil to be purified according to main pollutant components, and selecting the areas which accord with the operation of isolation and repair equipment from the divided areas;
secondly, equipment installation, namely adjusting the quantity of the sewage suction type plant mats, the purification electrodes and the purification power supply in the isolation repair equipment, the plant types of the sewage suction type plant mats and the power of the purification power supply according to the regional area of the soil to be purified selected in the first step, then excavating positioning grooves at the edge positions of the regional area of the soil to be purified, respectively embedding the sewage suction type plant mats and the purification electrodes into the soil to be purified through the positioning grooves, and finally electrically connecting the purification electrodes with the purification power supply;
thirdly, performing purification operation, namely turning on a power supply to supply power to each purification electrode, enabling soil in a soil region to be purified to form an electric field of a closed loop through a positive plate and a negative plate of the purification electrode, enabling pollutant ions adsorbed on the surface of soil particles in the soil region to be purified to carry charges, and gradually accumulating the pollutant ions to the positions of the positive plate and the negative plate according to the characteristics of the carried charges, and meanwhile, irrigating and watering the pollution absorption type plant mat through spraying equipment to promote the germination and growth of plant seeds;
fourthly, maintenance, namely, according to the requirement of purification operation, on one hand, replacing the corrosion condition of each positive plate and each negative plate, on the other hand, regularly carrying out watering irrigation and fertilization operation on the soil-suction type plant mat, and simultaneously carrying out trimming maintenance and incomplete reseeding operation on vegetation appearing in the soil-suction type plant mat until the content of pollutants in the soil region to be purified reaches the standard;
and fifthly, dismantling the equipment, and dismantling and recycling the purification electrode and the purification power supply in the isolation repair equipment after the content of the pollutants in the soil region to be purified reaches the standard.
6. Use according to claim 5, characterized in that: in the third step and the fourth step, spraying and humidifying operation can be carried out on the region of the soil to be purified between the positive plate and the negative plate through spraying equipment.
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| CN201610764806.7A CN106424114B (en) | 2016-08-30 | 2016-08-30 | Contaminated soil barrier repair structure and method thereof |
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| CN201610764806.7A CN106424114B (en) | 2016-08-30 | 2016-08-30 | Contaminated soil barrier repair structure and method thereof |
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| NL8702437A (en) * | 1987-10-13 | 1989-05-01 | Geo Kinetics B V I O | METHOD FOR CONDITIONING GROUND MATERIAL BY ELECTROKINETIC TREATMENT, ELECTRIC FLOW SYSTEM FOR APPLICATION OF THE METHOD AND ELECTRODE HOUSING FOR USE IN THE ELECTRIC FLOW SYSTEM. |
| JPH08508198A (en) * | 1993-04-06 | 1996-09-03 | エス． グレーズ，ブレードリー | Method for promoting bioremediation and method of using a device for said method |
| CN103706622B (en) * | 2013-12-25 | 2015-12-09 | 江苏大地益源环境修复有限公司 | The uniform electric field preparation method of Electrokinetic Remediation of Polluted Soils and device |
| CN204429841U (en) * | 2014-11-27 | 2015-07-01 | 武汉都市环保工程技术股份有限公司 | A kind of original position electro reclamation system for organic polluted soil |
| CN104492796A (en) * | 2014-12-09 | 2015-04-08 | 江苏盖亚环境工程有限公司 | Electrokinetic remediation method of heavy metal contaminated soil |
| CN206199870U (en) * | 2016-08-30 | 2017-05-31 | 江苏绿岩生态技术股份有限公司 | A kind of contaminated soil is intercepted repairs structure |
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