CN115365282A

CN115365282A - Separate anti-seepage device for purifying agricultural contaminated soil

Info

Publication number: CN115365282A
Application number: CN202211053914.5A
Authority: CN
Inventors: 刘波
Original assignee: Galaxy Aerospace Beijing Network Technology Co ltd
Current assignee: Galaxy Aerospace Beijing Network Technology Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-22

Abstract

The invention discloses a separation and seepage-proofing device for purifying agricultural polluted soil, which relates to the technical field of polluted soil purification, and particularly relates to a separation and seepage-proofing device for purifying agricultural polluted soil, which comprises a separation wall, wherein an outer separation layer I is sprayed on the outer side of the separation wall, an inner separation layer I, an inner separation layer II, a diversion layer, a geotextile layer and a permeable plate layer are sequentially arranged inside the separation wall, a diversion vertical pipe is arranged inside the diversion layer, a first filtering layer and a second filtering layer which are positioned below the geotextile layer are arranged inside the separation wall, a water leakage hole is arranged at the bottom of the separation wall, and the separation and seepage-proofing device for purifying agricultural polluted soil is characterized in that a diversion layer is arranged inside the separation wall, so that pollutants in the polluted soil permeate to the diversion layer through the permeable plate layer and the cloth layer, and the diversion vertical pipe in the diversion layer can divert the pollutants to enable the pollutants to flow downwards, thereby avoiding the pollutants from continuously permeating outwards, and improving the recovery efficiency of flushing fluid.

Description

Separate anti-seepage device for purifying agricultural contaminated soil

Technical Field

The invention relates to the technical field of polluted soil purification, in particular to a barrier anti-seepage device for purifying agricultural polluted soil

Background

Soil pollutants can be broadly divided into two broad categories, inorganic pollutants and organic pollutants. When the soil contains excessive harmful substances and exceeds the self-cleaning capacity of the soil, the composition, the structure and the function of the soil are changed, the activity of microorganisms is inhibited, the harmful substances or decomposition products thereof in the soil reach the degree of harming human health, namely soil pollution, and a barrier layer is formed by laying barrier materials to block the migration and diffusion path of pollutants in the soil. The polluted soil or the treated soil is placed in the anti-seepage blocking area and isolated from the surrounding environment, so that the pollutants are prevented from contacting human bodies and harming the environment due to precipitation or underground water migration.

Need carry out repairing after polluting soil isolation, the soil drip washing is one kind and carries out prosthetic technique to soil, through pour into or the infiltration flush fluid in to soil, makes its soil layer that needs to be administered of flowing through, and the pollutant in the analytic soil is handled and the process of retrieval and utilization to the flush fluid that contains the pollutant again, but the flush fluid that the soil sprayed only can filter the recovery bottom the soil, and recovery efficiency is low, for this reason we provide a separation anti-seepage device who purifies agricultural pollution soil.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a barrier anti-seepage device for purifying agricultural contaminated soil, which solves the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: a separation anti-seepage device for purifying agricultural polluted soil comprises a separation wall, wherein an outer separation layer I is sprayed on the outer side of the separation wall, an inner separation layer I, an inner separation layer II, a flow guide layer, a geotextile layer and a permeable plate layer are sequentially arranged inside the separation wall, a flow guide vertical pipe is arranged inside the flow guide layer, a filter layer I and a filter layer II which are positioned below the geotextile layer are arranged inside the separation wall, a water leakage hole is formed in the bottom of the separation wall, a transverse flow channel is arranged at the bottom of the water leakage hole, a support plate is fixedly arranged inside the transverse flow channel, drainage ditches are fixedly connected to two ends of the transverse flow channel, a water collecting well is fixedly arranged in the middle of each drainage ditch, and an outer separation layer II is sprayed on the outer sides of the drainage ditches and the water collecting well;

the first inner isolation layer is an organic pollutant isolation layer, and the organic pollutant isolation layer is an isolation layer formed by compounding an EVOH copolymerization impermeable film and geotextile according to the thickness ratio of 2; the compounding mode is bonding or hot-pressing compounding;

the second inner isolation layer is a heavy metal isolation layer, the heavy metal isolation layer is formed by compacting a mixed material consisting of clay, cement, rock powder and an adhesive according to a weight ratio of 30.

Optionally, the first outer isolation layer and the second outer isolation layer are polymer polyethylene coatings, the thicknesses of the first outer isolation layer and the second outer isolation layer are 1.5-2.5mm, the first outer isolation layer and the second outer isolation layer can protect the outer surfaces of the isolation wall, the drainage ditch and the water collecting well by arranging the first outer isolation layer and the second outer isolation layer, external rainwater is prevented from permeating the isolation wall, the drainage ditch and the water collecting well, and the service life of the isolation wall is prolonged.

Optionally, the first inner isolation layer is an organic pollutant isolation layer, the organic pollutant isolation layer is an isolation layer formed by compounding an EVOH copolymerization impermeable membrane and a geotextile, the thickness of the first inner isolation layer is 3-5mm, and the first inner isolation layer is arranged to isolate organic pollutants, so that environmental pollution caused by outward diffusion of the organic pollutants is avoided.

Optionally, the inner isolation layer two is a heavy metal isolation layer, the heavy metal isolation layer is formed by compacting a mixed material composed of a clay material, cement, rock powder and an adhesive, a heavy metal curing stabilizer is added into the heavy metal isolation layer, the heavy metal curing stabilizer is one of cement, lime, fly ash and ferrous sulfate, the thickness of the inner isolation layer two is 40mm, and the inner isolation layer two is arranged to isolate heavy metal pollutants and prevent the heavy metal pollutants from being diffused outwards to cause environmental pollution.

It is optional, the equidistant distribution of water conservancy diversion standpipe is in the inside on water conservancy diversion layer, the infiltration hole has been seted up to water conservancy diversion standpipe's inboard, the medial surface intercommunication on infiltration hole and water conservancy diversion layer, transversely run through there is the through hole between the water conservancy diversion standpipe, through setting up the water conservancy diversion standpipe, the water conservancy diversion standpipe can be to the pollutant water conservancy diversion, makes the pollutant downstream, avoids the pollutant to continue outside infiltration, and the through hole can be with the water conservancy diversion standpipe intercommunication of difference, and when certain one section water conservancy diversion standpipe blockked up like this, the pollutant can transversely flow to other water conservancy diversion standpipes in, improves the permeability on water conservancy diversion layer.

Optionally, the geotechnological cloth layer is non-woven fabrics geotechnological cloth, geotechnological cloth layer covers around the division wall and ground, and through setting up geotechnological cloth layer, the geotechnological cloth layer can filter earth, avoids during earth enters into the water conservancy diversion layer, causes the jam to the water conservancy diversion layer.

Optionally, the sheet layer of permeating water is ceramic particle brick that permeates water, the thickness of the sheet layer of permeating water is 10-15cm, the sheet layer of permeating water covers around the division wall with the bottom surface, and through setting up the sheet layer of permeating water, the sheet layer of permeating water has good water permeability, enables the rivers in the contaminated soil and carries the pollutant and outwards permeate, nevertheless can block earth, reduces the loss of earth.

Optionally, the first filter layer is an initial effect filter screen layer, the second filter layer is a polyvinylidene fluoride microporous membrane layer, and large granular substances in the flushing fluid can be filtered out by matching the first filter layer with the second filter layer, so that the soil is further filtered, and the turbidity of the flushing fluid is reduced.

Optionally, the supporting plate is arranged inside the transverse flow channel at equal intervals, the flow openings are formed in the bottom of the supporting plate and distributed at equal intervals, the supporting plate is used for supporting the transverse flow channel by arranging the supporting plate, the transverse flow channel is prevented from being collapsed by polluted soil, meanwhile, the flow openings in the bottom of the supporting plate guarantee smoothness of the transverse flow channel, and flushing fluid can flow to two sides smoothly.

Optionally, the outside top of sump pit is provided with the opening, the apron has been placed to the opening part at sump pit top, and through setting up the sump pit, the flush fluid finally flows into the sump pit, conveniently concentrates the collection to the flush fluid, is convenient for carry out recovery processing to the flush fluid.

The invention provides a separation and seepage-proofing device for purifying agricultural contaminated soil, which has the following beneficial effects:

1. this purify separation watertight fittings of agricultural pollution soil, through set up outer isolation layer one respectively in the outside and the inboard of division wall, inner isolation layer one, inner isolation layer two can improve the inboard barrier propterty of division wall, avoid the inside contaminated soil of division wall to leak, prevent to pollute the soil diffusion and cause the pollution to the environment on every side, outer isolation layer one can be protected the division wall, avoid external rainwater to the inside infiltration of division wall, improve the life of division wall.

2. This purify separation anti-seepage device of agricultural pollution soil, set up the water conservancy diversion layer through the inside at the division wall, pollutant in the polluted soil sees through the sheet layer of permeating water and the geotechnological cloth layer permeates water conservancy diversion layer department, the inside water conservancy diversion standpipe of water conservancy diversion layer can be to the pollutant water conservancy diversion, make the pollutant downward flow, avoid the pollutant to continue outwards to permeate, improve flush fluid recovery efficiency, the through hole can be with the water conservancy diversion standpipe intercommunication of difference, when certain one section water conservancy diversion standpipe blockked up like this, the pollutant can lateral flow to in other water conservancy diversion standpipe, improve the permeability on water conservancy diversion layer.

3. This purify separation anti-seepage device of agricultural contaminated soil filters through geotechnological cloth layer, the sheet layer that permeates water, filter layer one, two pairs of contaminated soil of filter layer, filters out heavy metal, organic pollutant in the contaminated soil, during pollutant such as pesticide residue made the pollutant flow into transverse flow channel, then by transverse flow channel with the pollutant water conservancy diversion to the escape canal in, can get rid of the pollutant in the contaminated soil, avoid the pollutant to collect in the bottom of contaminated soil, realize the restoration to contaminated soil.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2 at A according to the present invention;

FIG. 4 is a schematic structural diagram of a current guiding layer according to the present invention;

FIG. 5 is a schematic view of a flow guiding layer according to the present invention in partial cross-section;

fig. 6 is a schematic structural view of the support plate of the present invention.

In the figure: 1. a partition wall; 2. an outer isolation layer I; 3. a first inner isolation layer; 4. a second inner isolation layer; 5. a flow guiding layer; 51. a vertical diversion pipe; 52. a penetration hole; 53. a through hole; 6. a geotextile layer; 7. a water permeable sheet layer; 8. a first filter layer; 9. a second filter layer; 10. a water leakage hole; 11. a transverse flow passage; 12. a support plate; 121. a flow port; 13. a drainage ditch; 14. a water collecting well; 15. an outer isolation layer II; 16. and a cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a separation and seepage-proofing device for purifying agricultural polluted soil comprises a separation wall 1, wherein an outer separation layer I2 is sprayed on the outer side of the separation wall 1, an inner separation layer I3, an inner separation layer II 4, a flow guide layer 5, a geotextile layer 6 and a water-permeable plate layer 7 are sequentially arranged inside the separation wall 1, the inner separation layer I3 is an organic pollutant separation layer, and the organic pollutant separation layer is formed by compounding an EVOH copolymerization seepage-proofing film and a geotextile according to the thickness ratio of 2; the compound mode is for binding, the thickness of the first inner isolation layer 3 is 3mm, by arranging the first inner isolation layer 3, the first inner isolation layer 3 is used for isolating organic pollutants, and the environmental pollution caused by the outward diffusion of the organic pollutants is avoided, the second inner isolation layer 4 is a heavy metal isolation layer, the heavy metal isolation layer is formed by compacting a mixed material consisting of clay, cement, rock powder and an adhesive according to a weight ratio of 30.

Please refer to fig. 3, 4, fig. 5, the diversion stack 51 has been seted up to the inside of diversion layer 5, the equidistant distribution of diversion stack 51 is in the inside of diversion layer 5, through setting up diversion stack 51, diversion stack 51 can be to the pollutant water conservancy diversion, make the pollutant downward flow, avoid the pollutant to continue outside infiltration, the infiltration hole 52 has been seted up to the inboard of diversion stack 51, through setting up infiltration hole 52, the permeability of diversion layer 5 has been improved, accelerate the inside collection of flushing fluid to diversion stack 51, infiltration hole 52 and the medial surface intercommunication of diversion layer 5, transversely run through there is the through hole 53 between the diversion stack 51, can communicate the diversion stack 51 of difference through setting up through hole 53, when certain section diversion stack 51 blocks up like this, the pollutant can transversely flow to other diversion stacks 51, improve the water conservancy diversion effect of diversion layer 5.

Please refer to fig. 1 and 2, the geotextile layer 6 is a non-woven geotextile, the geotextile layer 6 covers the periphery of the partition wall 1 and the ground, the geotextile layer 6 can filter the soil by setting the geotextile layer 6, the soil is prevented from entering the diversion layer 5 and blocking the diversion layer 5, the permeable plate layer 7 is a ceramic particle permeable brick, the permeable plate layer 7 has a thickness of 10-15cm, the permeable plate layer 7 covers the periphery and the bottom of the partition wall 1, and the permeable plate layer 7 has good permeability by setting the permeable plate layer 7, so that the water flow in the polluted soil can carry the pollutants to permeate outwards, but can block the soil and reduce the loss of the soil.

Referring to fig. 2, a first filter layer 8 and a second filter layer 9 located below the geotextile layer 6 are arranged inside the partition wall 1, the first filter layer 8 is an initial filter screen layer, the second filter layer 9 is a polyvinylidene fluoride microporous membrane layer, large granular substances in the washing liquid can be filtered by matching the first filter layer 8 with the second filter layer 9, the soil is further filtered, the turbidity of the washing liquid is reduced, and a water leakage hole 10 is formed in the bottom of the partition wall 1.

Please refer to fig. 2, fig. 6, the bottom of the water leakage hole 10 is provided with a transverse flow channel 11, through setting the transverse flow channel 11, utilize the transverse flow channel 11 to guide the flushing liquid into the drainage ditch 13, the flushing liquid is conveniently collected, the inside fixed mounting of the transverse flow channel 11 has a support plate 12, the support plate 12 is arranged in the inside of the transverse flow channel 11 at equal intervals, the circulation port 121 has been seted up to the bottom of the support plate 12, the circulation port 121 is distributed at equal intervals, through setting the support plate 12, the support plate 12 is used for supporting the transverse flow channel 11, avoid the transverse flow channel 11 to be collapsed by the polluted soil, the circulation port 121 at the bottom of the support plate 12 guarantees the smoothness of the transverse flow channel 11 simultaneously, make the flushing liquid can flow to both sides smoothly.

Referring to fig. 1 and 2, drainage ditches 13 are fixedly connected to two ends of a transverse flow channel 11, the drainage ditches 13 are used for collecting flushing liquid into a water collecting well 14, a water collecting well 14 is fixedly installed in the middle of each drainage ditch 13, an opening is formed in the top of the outside of the water collecting well 14, a cover plate 16 is placed at the opening in the top of the water collecting well 14, the flushing liquid finally flows into the water collecting well 14 through the water collecting well 14, the flushing liquid is conveniently collected in a centralized mode, the flushing liquid is conveniently recovered, an outer isolation layer two 15 is sprayed on the outside of each drainage ditch 13 and the water collecting well 14, the outer isolation layer one 2 and the outer isolation layer two 15 are both made of high polymer polyethylene coatings, the thickness of the outer isolation layer one 2 and the thickness of the outer isolation layer two 15 are 1.5mm, and the outer isolation layer one 2 and the outer isolation layer two 15 are arranged, so that the outer surfaces of the isolation wall 1, the drainage ditches 13 and the water collecting well 14 can be protected, and external rainwater is prevented from permeating into the isolation wall 1, the drainage ditches 13 and the service life of the isolation wall 1 is prolonged.

In conclusion, this purify separation seepage prevention device of agricultural contaminated soil, during the use, in piling up the contaminated soil in the division wall 1, then spray the flush fluid to contaminated soil, utilize the pollutant in the flush fluid analytic soil, make the pollutant along with the flush fluid infiltration downwards, carry out prefilter to the flush fluid through sheet layer 7 and geotechnological cloth layer 6 that permeates water, avoid mixing earth in the flush fluid, water conservancy diversion layer 5 can be with the downward water conservancy diversion of the flush fluid of infiltration to the side, make the flush fluid collect downwards, inner separation layer one 3 and inner separation layer two 4 outside water conservancy diversion layer 5 can be kept apart flush fluid and pollutant, avoid the pollutant to leak, then carry out further filtration to the flush fluid by filter layer one 8 and filter layer two 9, remove the large granule in the water conservancy diversion layer, make the flush fluid only carry the pollutant infiltration to horizontal runner 11 in, the flush fluid that carries the pollutant is guided into escape canal 13 by horizontal runner 11 again, later collect the pollutant in sump pit 14 department through escape canal 13, can.

Example 2

The present embodiment is different from embodiment 1 in that,

the first inner isolation layer 3 is an organic pollutant isolation layer, and the organic pollutant isolation layer is an isolation layer formed by compounding an EVOH copolymerization impermeable film and geotextile according to the thickness ratio of 2; the compounding mode is hot-press compounding, which is a common prior art and is not described herein again; the thickness of the first inner isolation layer 3 is 5mm;

the second inner isolation layer 4 is a heavy metal isolation layer, the heavy metal isolation layer is formed by compacting a mixed material consisting of clay, cement, rock powder and an adhesive according to a weight ratio of 30;

the thickness of the first outer isolation layer 2 and the second outer isolation layer 15 is 2.5mm.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a purify separation watertight fittings of agricultural pollution soil, includes divider wall (1), its characterized in that: the outer side of the partition wall (1) is sprayed with a first outer isolation layer (2), the inside of the partition wall (1) is sequentially provided with a first inner isolation layer (3), a second inner isolation layer (4), a diversion layer (5), a geotextile layer (6) and a permeable plate layer (7), the inside of the diversion layer (5) is provided with a diversion vertical pipe (51), the inside of the partition wall (1) is provided with a first filter layer (8) and a second filter layer (9) which are positioned below the geotextile layer (6), the bottom of the partition wall (1) is provided with a water leakage hole (10), the bottom of the water leakage hole (10) is provided with a transverse flow channel (11), the inside of the transverse flow channel (11) is fixedly provided with a support plate (12), two ends of the transverse flow channel (11) are fixedly connected with drainage ditches (13), the middle of the drainage ditches (13) is fixedly provided with a water collection well (14), and the outside of the drainage ditches (13) and the water collection well (14) is sprayed with a second outer isolation layer (15);

the first inner isolation layer (3) is an organic pollutant isolation layer, and the organic pollutant isolation layer is an isolation layer formed by compounding an EVOH copolymerization impermeable film and geotextile according to the thickness ratio of 2; the compounding mode is bonding or hot-pressing compounding;

the second inner isolation layer (4) is a heavy metal isolation layer, the heavy metal isolation layer is formed by compacting a mixed material consisting of clay, cement, rock powder and an adhesive according to a weight ratio of 30.

2. The barrier seepage-proofing device for purifying the agricultural contaminated soil according to claim 1, wherein: the outer isolation layer I (2) and the outer isolation layer II (15) are both high-molecular polyethylene coatings, and the thickness of the outer isolation layer I (2) and the thickness of the outer isolation layer II (15) are 1.5-2.5mm.

3. The barrier seepage-proofing device for purifying agricultural contaminated soil according to claim 1, wherein: the thickness of the first inner isolation layer (3) is 3-5mm.

4. The barrier seepage-proofing device for purifying agricultural contaminated soil according to claim 1, wherein: the thickness of the inner isolation layer II (4) is 40mm.

5. The barrier seepage-proofing device for purifying agricultural contaminated soil according to claim 1, wherein: the flow guide vertical pipes (51) are distributed in the flow guide layer (5) at equal intervals, the inner sides of the flow guide vertical pipes (51) are provided with penetration holes (52), the penetration holes (52) are communicated with the inner side faces of the flow guide layer (5), and through holes (53) transversely penetrate through the flow guide vertical pipes (51).

6. The barrier seepage-proofing device for purifying the agricultural contaminated soil according to claim 1, wherein: the geotechnical cloth layer (6) is non-woven geotechnical cloth, and the geotechnical cloth layer (6) covers the periphery of the partition wall (1) and the ground.

7. The barrier seepage-proofing device for purifying the agricultural contaminated soil according to claim 1, wherein: the water permeable slab layer (7) is ceramic particle water permeable bricks, the thickness of the water permeable slab layer (7) is 10-15cm, and the water permeable slab layer (7) covers the periphery and the bottom surface of the partition wall (1).

8. The barrier seepage-proofing device for purifying the agricultural contaminated soil according to claim 1, wherein: the first filter layer (8) is a primary filter net layer, and the second filter layer (9) is a polyvinylidene fluoride microporous film layer.

9. The barrier seepage-proofing device for purifying agricultural contaminated soil according to claim 1, wherein: the supporting plate (12) is arranged inside the transverse flow channel (11) at equal intervals, the bottom of the supporting plate (12) is provided with flow openings (121), and the flow openings (121) are distributed at equal intervals.

10. The barrier seepage-proofing device for purifying the agricultural contaminated soil according to claim 1, wherein: an opening is formed in the top of the outer portion of the water collecting well (14), and a cover plate (16) is placed at the opening in the top of the water collecting well (14).