CN113290030B - Soil and groundwater pollution device are restoreed in integration - Google Patents
Soil and groundwater pollution device are restoreed in integration Download PDFInfo
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- CN113290030B CN113290030B CN202110527294.3A CN202110527294A CN113290030B CN 113290030 B CN113290030 B CN 113290030B CN 202110527294 A CN202110527294 A CN 202110527294A CN 113290030 B CN113290030 B CN 113290030B
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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
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
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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
- B09C1/06—Reclamation of contaminated soil thermally
- B09C1/062—Reclamation of contaminated soil thermally by using electrode or resistance heating elements
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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
- B09C2101/00—In situ
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides an integrated device for repairing soil and underground water pollution, which belongs to the field of soil and underground water repair and comprises an electrode layer, a graphite filling layer, a water replenishing pipe, a rectifier and a voltage stabilizing power supply; the electrode layer is vertically arranged and has a hollow shell-shaped structure, and the graphite filling layer surrounds the outer side of the electrode layer; one end of the water replenishing pipe is positioned inside the electrode layer, and the side wall of the electrode layer is provided with a water seepage hole communicated with the inside of the electrode layer; the input of rectifier and the bottom electric connection of graphite filling layer, the output of rectifier and the input electric connection of constant voltage power supply, constant voltage power supply have anodal output and negative pole output. According to the invention, the in-situ thermal desorption technology and the electrodynamic remediation technology are combined, so that not only can organic pollutants in soil be removed, but also heavy metal pollutants in the soil can be treated, and the components of the electrodynamic remediation technology can also utilize the end part of the components of the in-situ thermal desorption technology to accumulate charges, thereby reducing power consumption loss.
Description
Technical Field
The invention belongs to the field of soil and underground water remediation, and particularly relates to an integrated device for remediating soil and underground water pollution.
Background
The principle of the in-situ thermal desorption technology is that the temperature of a polluted area is raised through heating, the physicochemical properties (steam pressure and solubility are increased, viscosity, surface tension, Henry coefficient and soil-water distribution coefficient are reduced) of pollutants in soil and underground water are changed, the concentration of the pollutants in a gas phase or a liquid phase is increased, the pollutants on the surface layer of the soil are volatilized, and meanwhile, the pollutants in the deep layer of the soil can be pumped to the ground in a pumping mode for treatment.
The in-situ thermal desorption technology can efficiently treat organic matter polluted plots, such as heavy polluted industrial plots of coking plants, steel plants, coal gas plants, pesticide plants and the like, and the treatable pollutants comprise POPs, SVOCs, VOCs, PAHs, pesticides, dioxin and the like. Has obvious effect of mixing various organic matters with pungent odor to volatility.
The electrodynamics repair technology belongs to the heavy metal polluted soil repair technology, and the concrete method comprises the following steps: the electrode is inserted into polluted soil and is connected with direct current, the pollutants in the soil directionally move in three modes of electrodialysis, electromigration and electrophoresis under the action of an external electric field, so that the pollutants are enriched near the electrode area, and finally the pollution treatment purpose is achieved by centralized treatment or separation in the treatment modes of electroplating, coprecipitation, extracting polluted water near the electrode, using ion exchange resin and the like.
In a word, the in-situ thermal desorption technology is to remove organic pollutants in soil by heating the soil to volatilize or decompose the organic pollutants; the electrodynamic remediation technology is commonly used for treating heavy metal pollution in water and soil, and aims to improve the migration capacity of pollutants by utilizing an electrochemical principle and aggregate the pollutants.
In the prior art, alternating current is conducted on two electric conductors mostly in an in-situ thermal desorption technology, soil between the two electric conductors has resistance, and the soil is heated by utilizing the joule law, but due to the tip effect, a large amount of charges can gather at the end parts of the electric conductors, the end parts are overheated, the power consumption loss is large, the distribution of heating areas is uneven, in addition, the resistance thermal desorption technology can only restore organic pollution, and the types of the aimed pollutants are single; in addition, the electrodynamic remediation technology can electrolyze part of organic pollutants, but is applied on a small scale.
Disclosure of Invention
In view of the above, the present invention is directed to an integrated device for remediating contaminated soil and groundwater, so as to alleviate the above-mentioned technical problems.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides an integrated device for remedying soil and underground water pollution, which comprises an electrode layer, a graphite filling layer, a water replenishing pipe, a rectifier and a voltage stabilizing power supply, wherein the electrode layer is arranged on the graphite filling layer; the electrode layer is of a vertically arranged shell-shaped structure with a hollow interior, the graphite filling layer surrounds the outer side of the electrode layer, and a plurality of electrode tubes are arranged on the outer surface of the electrode layer; one end of the water replenishing pipe is positioned inside the electrode layer, the other end of the water replenishing pipe is positioned in the external environment, and the side wall of the electrode layer is provided with a water seepage hole communicated with the inside of the electrode layer; the input end of the rectifier is electrically connected with the bottom of the graphite filling layer, the output end of the rectifier is electrically connected with the input end of the stabilized voltage power supply, and the stabilized voltage power supply is provided with a positive electrode output end and a negative electrode output end.
Further, the device also comprises an isolation layer and a suction pipe; the isolating layer is fixed inside the electrode layer and divides the inner space of the electrode layer into an upper layer space and a lower layer space; one end of the water replenishing pipe is positioned in the upper-layer space; one end of the suction pipe is positioned in the lower layer space, and the other end of the suction pipe is positioned in the external environment; the water seepage holes are communicated with the upper layer space; the electrode layer is provided with a liquid seepage hole communicated with the lower layer space.
Further, the insulating layer is also included; the top of the graphite filling layer is provided with an opening, and the insulating layer is arranged on the top of the electrode layer.
Further, the insulating layer is a cover-shaped structure with internal threads, and the insulating layer is in threaded connection with the outer surface of the top of the electrode layer.
Further, the heat insulation layer is arranged on the top of the insulation layer.
Furthermore, the heat-insulating layer is a bentonite layer laid on the upper surface of the heat-insulating layer.
Further, the device also comprises a first electrode plate and a second electrode plate; the first electrode plate is electrically connected with the positive output end of the stabilized voltage power supply, and the second electrode plate is electrically connected with the negative output end of the stabilized voltage power supply.
The graphite filling layer is fixedly connected with the bottom of the graphite filling layer; the support is provided with a bearing surface, and the rectifier and the stabilized voltage supply are arranged on the bearing surface of the support.
Further, the support still has the guard portion, the filter pore has been seted up to the guard portion, the guard portion surround in the outside of first electrode board with the second electrode board.
Furthermore, a power supply wiring terminal is arranged on the top of the electrode layer.
Compared with the prior art, the integrated device for repairing the soil and underground water pollution has the following advantages:
the invention provides an integrated device for remedying soil and underground water pollution, which comprises an electrode layer, a graphite filling layer, a water replenishing pipe, a rectifier and a voltage stabilizing power supply, wherein the electrode layer is arranged on the graphite filling layer; the electrode layer is of a vertically arranged shell-shaped structure with a hollow interior, the graphite filling layer surrounds the outer side of the electrode layer, and the top of the graphite filling layer is opened; one end of the water replenishing pipe is positioned inside the electrode layer, the other end of the water replenishing pipe is positioned in the external environment, and the side wall of the electrode layer is provided with a water seepage hole communicated with the inside of the electrode layer; the input end of the rectifier is electrically connected with the bottom of the graphite filling layer, the output end of the rectifier is electrically connected with the input end of the stabilized voltage power supply, and the stabilized voltage power supply is provided with a positive electrode output end and a negative electrode output end.
According to the invention, the in-situ thermal desorption technology and the electrodynamic remediation technology are combined, so that not only can organic pollutants in soil be removed, but also heavy metal pollutants in the soil can be treated, and the components of the electrodynamic remediation technology can also utilize the end part of the components of the in-situ thermal desorption technology to accumulate charges, thereby reducing power consumption loss.
In addition, the scheme of the invention is simple and ingenious, the device cost is lower, the soil remediation effect is better, and the device is suitable for being widely popularized and used.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic overall structure diagram of an integrated soil and groundwater pollution remediation device according to an embodiment of the invention.
Description of reference numerals:
1-an electrode layer; 101-water seepage holes; 102-a weep hole; 2-a graphite filling layer; 3-water replenishing pipe; 4-a rectifier; 5-a regulated power supply; 6-an isolating layer; 7-a suction pipe; 8-an insulating layer; 9-a heat-insulating layer; 10-a first electrode plate; 11-a second electrode plate; 12-a scaffold; 13-supply terminals; 14-a cable; 15-a water pump; 16-detection means.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the invention provides an integrated soil and groundwater pollution remediation device, which comprises an electrode layer 1, a graphite filling layer 2, a water replenishing pipe 3, a rectifier 4 and a stabilized voltage power supply 5; the electrode layer 1 is a vertically arranged shell-shaped structure with a hollow interior, the graphite filling layer 2 surrounds the outer side of the electrode layer 1, and a plurality of electrode tubes are arranged on the outer surface of the electrode layer 1; one end of the water replenishing pipe 3 is positioned inside the electrode layer 1, the other end of the water replenishing pipe 3 is positioned in the external environment, and the side wall of the electrode layer 1 is provided with a water seepage hole 101 communicated with the inside of the electrode layer 1; the input end of the rectifier 4 is electrically connected with the bottom of the graphite filling layer 2, the output end of the rectifier 4 is electrically connected with the input end of the stabilized voltage power supply 5, and the stabilized voltage power supply 5 is provided with a positive electrode output end and a negative electrode output end.
Specifically, the repairing device is integrally embedded in polluted soil, wherein the electrode layer 1, the graphite filling layer 2 and the water replenishing pipe 3 on the upper half portion utilize an in-situ thermal desorption technology, and the rectifier 4 and the stabilized voltage power supply 5 on the lower half portion utilize an electrodynamic repairing technology.
More specifically, alternating current is connected to the top of the electrode layer 1, and the soil between every two adjacent electrode tubes on the electrode layer 1 forms a resistor, so that huge heat can be generated according to the joule law, and the soil is heated, so that organic pollutants on the surface layer of the soil are volatilized; the water supply source is connected with the water replenishing pipe 3, water is intermittently supplied into the electrode layer 1, and water flows permeate into soil from the water seepage holes 101 of the electrode layer 1, so that the surrounding soil contains a certain amount of water, a loop is convenient to form, and the soil is heated; the graphite filling layer 2 is mixed with soil and wrapped on the outer side of the electrode layer 1, so that the conductivity of the soil can be increased, and the water phase can be conveniently permeated.
In addition, the rectifier 4 is arranged at the bottom of the graphite filling layer 2, converts the alternating current gathered at the bottom into direct current and transmits the direct current to the stabilized voltage power supply 5 for storage, and the positive electrode and the negative electrode of the stabilized voltage power supply 5 can also discharge electricity to ionize heavy metal pollutants so that the heavy metal pollutants are gathered near the electrodes of the stabilized voltage power supply 5, thereby facilitating subsequent treatment.
The method combines the in-situ thermal desorption technology and the electrodynamic remediation technology, and can remove organic pollutants in the soil and treat heavy metal pollutants in the soil.
Moreover, the components of the electrodynamic repair technology can reasonably utilize the accumulated charges at the end parts of the components of the in-situ thermal desorption technology, and the power loss is reduced.
In addition, the scheme of the invention is simple and ingenious, the device cost is lower, the soil remediation effect is better, and the device is suitable for being widely popularized and used.
In an alternative embodiment of this embodiment, it is preferable that the air-conditioner further comprises an isolation layer 6 and a suction pipe 7; the isolation layer 6 is fixed inside the electrode layer 1, and the isolation layer 6 divides the internal space of the electrode layer 1 into an upper layer space and a lower layer space; one end of the water replenishing pipe 3 is positioned in the upper-layer space; one end of the suction pipe 7 is positioned inside the lower layer space, and the other end of the suction pipe 7 is positioned in the external environment; the water seepage holes 101 are communicated with the upper layer space; the electrode layer 1 is provided with a liquid seepage hole 102 communicated with the lower layer space.
Specifically, the water pump 15 is connected with the suction pipe 7, organic pollutants in the middle layer or the deep layer of soil are heated and then changed into gas phase or liquid phase, and the gas phase or the liquid phase permeates into the electrode layer 1 from the liquid permeating holes 102, is extracted to the external environment through the suction pipe 7, is treated by the waste treatment device, and is discharged after being detected to be qualified by the detection device 16.
In an optional implementation manner of this embodiment, it is preferable that the insulation layer 8 is further included; the graphite filling layer 2 has an opening on the top, and the insulating layer 8 is disposed on the top of the electrode layer 1.
In an optional implementation manner of this embodiment, it is preferable that the insulating layer 8 is a cap-shaped structure having an internal thread, and the insulating layer 8 is screwed with an outer surface of the top portion of the electrode layer 1.
In an optional implementation manner of this embodiment, it is preferable that an insulating layer 9 is further included, and the insulating layer 9 is disposed on top of the insulating layer 8.
In an alternative embodiment of this embodiment, it is preferable that the insulating layer 9 is a bentonite layer laid on the upper surface of the insulating layer 8.
In an optional implementation manner of this embodiment, it is preferable that the display device further includes a first electrode plate 10 and a second electrode plate 11; the first electrode plate 10 is electrically connected with the positive output end of the stabilized voltage power supply 5, and the second electrode plate 11 is electrically connected with the negative output end of the stabilized voltage power supply 5.
In an optional implementation manner of this embodiment, it is preferable that the graphite filling layer 2 further includes a support 12, where the support 12 is fixedly connected to the bottom of the graphite filling layer 2; the support 12 has a bearing surface, and the rectifier 4 and the regulated power supply 5 are arranged on the bearing surface of the support 12.
In an optional implementation manner of this embodiment, it is preferable that the support 12 further includes a protective portion, the protective portion is provided with a filtering hole, and the protective portion surrounds the outer sides of the first electrode plate 10 and the second electrode plate 11.
In an alternative embodiment of this embodiment, it is preferable that the top of the electrode layer 1 is provided with a power supply terminal 13.
Specifically, the power supply terminal 13 may be a copper welding port, which facilitates connection of the cable 14 for introducing alternating current.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides an integration restoration soil and groundwater pollution device which characterized in that: comprises an electrode layer, a graphite filling layer, a water replenishing pipe, a rectifier and a voltage stabilizing power supply; the electrode layer is of a vertically arranged shell-shaped structure with a hollow interior, the graphite filling layer surrounds the outer side of the electrode layer, and a plurality of electrode tubes are arranged on the outer surface of the electrode layer; one end of the water replenishing pipe is positioned inside the electrode layer, the other end of the water replenishing pipe is positioned in the external environment, and the side wall of the electrode layer is provided with a water seepage hole communicated with the inside of the electrode layer; the input end of the rectifier is electrically connected with the bottom of the graphite filling layer, the output end of the rectifier is electrically connected with the input end of the stabilized voltage power supply, and the stabilized voltage power supply is provided with a positive electrode output end and a negative electrode output end;
also comprises an isolation layer and a suction pipe; the isolating layer is fixed inside the electrode layer and divides the inner space of the electrode layer into an upper layer space and a lower layer space; one end of the water replenishing pipe is positioned in the upper-layer space; one end of the suction pipe is positioned in the lower layer space, and the other end of the suction pipe is positioned in the external environment; the water seepage holes are communicated with the upper layer space; the electrode layer is provided with a liquid seepage hole communicated with the lower layer space of the electrode layer;
further comprising an insulating layer; the top of the graphite filling layer is provided with an opening, and the insulating layer is arranged on the top of the electrode layer.
2. The integrated soil and groundwater pollution remediation device of claim 1, wherein: the insulating layer is a cover-shaped structure with internal threads, and the insulating layer is in threaded connection with the outer surface of the top of the electrode layer.
3. The integrated soil and groundwater pollution remediation device as claimed in any one of claims 1 or 2, wherein: the insulation layer is arranged on the top of the insulation layer.
4. The integrated soil and groundwater pollution remediation device of claim 3, wherein: the heat-insulating layer is a bentonite layer laid on the upper surface of the insulating layer.
5. The integrated soil and groundwater pollution remediation device according to claim 1, wherein: the battery also comprises a first electrode plate and a second electrode plate;
the first electrode plate is electrically connected with the positive output end of the stabilized voltage power supply, and the second electrode plate is electrically connected with the negative output end of the stabilized voltage power supply.
6. The integrated soil and groundwater pollution remediation device of claim 5, wherein: the graphite filling layer is fixedly connected with the bottom of the graphite filling layer;
the support has a bearing surface, the rectifier with the constant voltage power supply set up in on the bearing surface of support.
7. The integrated soil and groundwater pollution remediation device of claim 6, wherein: the support still has the guard portion, the filter hole has been seted up to the guard portion, the guard portion surround in first electrode board with the outside of second electrode board.
8. The integrated soil and groundwater pollution remediation device of claim 1, wherein: and a power supply wiring terminal is arranged at the top of the electrode layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110527294.3A CN113290030B (en) | 2021-05-14 | 2021-05-14 | Soil and groundwater pollution device are restoreed in integration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110527294.3A CN113290030B (en) | 2021-05-14 | 2021-05-14 | Soil and groundwater pollution device are restoreed in integration |
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| CN113290030B true CN113290030B (en) | 2022-08-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105312314A (en) * | 2015-11-05 | 2016-02-10 | 北京建工环境修复股份有限公司 | Repairing system and method for heavy metal-organic combined polluted soil and underground water |
| CN106269843A (en) * | 2016-11-02 | 2017-01-04 | 中建中环工程有限公司 | The in-situ remediation method of one heavy metal species organic co-contaminated soil |
| CN108114970A (en) * | 2017-12-21 | 2018-06-05 | 永清环保股份有限公司 | A kind of contaminated soil original position thermal desorption repair system and method |
| CN108435778A (en) * | 2018-06-27 | 2018-08-24 | 北京高能时代环境技术股份有限公司 | Electric current heating thermal desorption electrode wells in situ for organic contamination place |
| CN111112324B (en) * | 2019-12-20 | 2021-09-03 | 清华大学 | Organic pollutant treatment device and equipment in soil and underground water |
| CN111687190A (en) * | 2020-06-19 | 2020-09-22 | 中科鼎实环境工程有限公司 | In-situ resistance heating-microbial degradation coupling technology soil remediation system |
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