CN112620324A - Pre-buried double-effect restoration method based on saline-alkali soil - Google Patents
Pre-buried double-effect restoration method based on saline-alkali soil Download PDFInfo
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- CN112620324A CN112620324A CN202011357704.6A CN202011357704A CN112620324A CN 112620324 A CN112620324 A CN 112620324A CN 202011357704 A CN202011357704 A CN 202011357704A CN 112620324 A CN112620324 A CN 112620324A
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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
Abstract
The invention discloses a pre-buried double-effect restoration method based on saline-alkali soil, belonging to the technical field of saline-alkali soil restoration, wherein a plurality of pre-buried perfusion pipes are utilized to perfuse the saline-alkali soil layer, water is drained to a heat storage crystallization cavity through the plurality of pre-buried perfusion pipes, a large-area transverse leaching effect is performed on the saline-alkali soil layer, water with salt is adsorbed by a water-conducting layer under the drainage effect, the temperature in the crystallization box is increased due to the matching of a light absorption heat storage layer and a heat conductor in the crystallization box, the water adsorbed on the water-conducting layer is evaporated and crystallized on a crystal surface layer with a certain temperature under the heat, the full transverse leaching and the separation of the salt on the surface layer of the soil and below the surface layer can be well realized, the application efficiency is high, the restoration time is short, and the salt is effectively removed, and meanwhile, the moisture retention effect is good, and the double-effect repairing effect is achieved.
Description
Technical Field
The invention relates to the technical field of saline-alkali soil remediation, in particular to a pre-buried double-effect remediation method based on saline-alkali soil.
Background
The saline-alkali soil is a kind of salt accumulation, which means that salt contained in soil influences the normal growth of crops, wherein most of the saline-alkali soil is related to the accumulation of carbonate in the soil, so that the alkalization degree is generally high, plants in serious saline-alkali soil regions can hardly survive, various saline-alkali soil is formed under certain natural conditions, and the essence of the formation is mainly that various soluble salts are redistributed in the horizontal direction and the vertical direction on the ground, so that the salt is gradually accumulated on the soil surface layer of the salt accumulation region. Salt accumulation in soil is the result of the superposition of a series of natural and artificial factors acting on different spatio-temporal scales. The soil salinization seriously restricts the agricultural development, improves and repairs large-area saline-alkali wasteland resources, and has extremely important significance for agricultural production development, national soil treatment, ecological environment protection and the like.
The evaporation of the water on the earth surface is strong in the season with less drought and rainwater, the salt in the water is gathered on the surface layer of the soil along with the rising of the capillary water, the salt return season is main, the salt and alkali meeting problem of the soil can be relieved to a certain extent in the desalting season, but the salt is gathered in the salt return season, the salt is returned to the earth surface again, the soil is subjected to salinization as before, so that the saline-alkali soil is not cultivated with season-changed plants, and the saline-alkali soil is difficult to be reasonably utilized.
The existing saline-alkali soil improvement method mainly comprises a physical method, a chemical method and the like. The physical method mainly uses leaching and salt discharge as main materials and combines the measures of plowing, leaching, silting and the like to achieve the purpose of improving the saline-alkali soil; the chemical method is to reduce the salinization degree of soil by adding some acidic chemicals, organic polymer materials and the like and combining with an organic fertilizer, but both methods have the problems of high cost, easy secondary pollution of soil and surrounding water sources and the like, and are not easy to reduce the salt content of the soil.
Therefore, an embedded double-effect restoration method based on saline-alkali soil is provided to effectively solve some problems in the prior art.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a pre-buried double-effect restoration method based on saline-alkali soil, which comprises the steps of arranging a film-covered flow guide cavity and a heat storage crystallization cavity which are mutually communicated in a saline-alkali soil layer, perfusing the saline-alkali soil layer by utilizing a plurality of pre-buried perfusion tubes, draining water to the heat storage crystallization cavity through the film-covered flow guide cavities, performing large-area transverse leaching on the saline-alkali soil layer, adsorbing the water with salt by a water guide layer under the drainage action, raising the temperature in a crystallization box due to the matching of a light absorption heat storage layer and a heat conductor in the crystallization box, evaporating and crystallizing the water adsorbed on the water guide layer on a crystallization surface layer with a certain temperature under the heat, well leaching and separating out the salt on the surface layer of the soil and the salt below the surface layer in a large-area, having high application efficiency and short restoration time, and the salt is effectively removed, and meanwhile, the moisture retention effect is good, and the double-effect repairing effect is achieved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A pre-buried double-effect restoration method based on saline-alkali soil comprises the following steps:
s1, when a salt return season of the saline-alkali soil comes, a plurality of groups of film-coated flow guide cavities corresponding in position are formed in the saline-alkali soil layer along the vertical direction, a heat storage crystallization cavity communicated with one end of each of the film-coated flow guide cavities is formed in the saline-alkali soil layer, a plurality of pre-buried irrigation pipes inserted into the film-coated flow guide cavities are buried at one end, far away from the heat storage crystallization cavity, of the saline-alkali soil layer, and irrigation holes are formed in the pre-buried irrigation pipes;
s2, pre-embedding and installing a crystallization box with a heat conductor inside in the heat storage crystallization cavity, embedding and connecting a water guide layer at one end of the crystallization box close to a film-coated flow guide cavity, wherein the water guide layer is communicated with a plurality of film-coated flow guide cavities, embedding and installing an upper crystallization surface layer between the heat conductor and the water guide layer, and covering a light absorption and heat storage layer connected with the crystallization box at the top end part of the heat storage crystallization cavity;
s3, supplementing water into the saline-alkali soil layer by using the plurality of pre-buried irrigation pipes, enabling the water to permeate the saline-alkali soil layer and flow to the heat storage crystallization cavity along the film coating diversion cavity, and enabling the water guide layer to adsorb the water and transmit the water to the crystallization box;
s4, when the sun irradiates on the light absorption and heat storage layer, the light absorption and heat storage layer absorbs a large amount of heat and transfers the heat into the heat conductor, the temperature in the crystallization box rises, water led to the water guide layer generates rising action under the action of the heat to generate steam, water containing salt is crystallized on the crystallization surface layer, and salt ions are enriched in the crystallization surface layer;
s5, excessive steam upwards seeps through a plurality of exhaust pipes arranged on one side of the top end of the crystallization box, excessive water downwards seeps, salt is separated out on the saline-alkali soil layer, certain water can be supplemented, the crystallization box and the water guide layer can be upwards dismantled for cleaning, and the long-term effect of the use of the pre-buried device is effectively realized.
Furthermore, it is a plurality of the prevention of seepage film has all been laid to tectorial membrane water conservancy diversion chamber's interior bottom, and a plurality of tectorial membrane water conservancy diversion chambers all set up downwards towards heat accumulation crystallization chamber direction slope, and the slope in tectorial membrane water conservancy diversion chamber sets up, is favorable to moving supplemented moisture to heat accumulation crystallization chamber one side, and sets up the prevention of seepage film, effectively plays and prevents to be close earth's surface department salt solution to the infiltration of below ground.
Further, it is a plurality of the top of pre-buried perfusion pipe is connected with the inlet tube, and is a plurality of the bottom of pre-buried perfusion pipe all is connected with the deep buried pipe, the bottom that the deep buried pipe was buried underground extends to the bottom in bottommost tectorial membrane water conservancy diversion chamber, sets up the deep buried pipe and effectively supplements the deep of moisture to saline and alkaline soil layer.
Further, the crystallization case is one side and the upper end all seted up open-ended cavity case, the bottom of cavity case is equipped with the permeable formation, sets up the permeable formation, and effectively will leading-in unnecessary amorphous water to the crystallization incasement permeates to the saline-alkali soil horizon deep layer.
Further, heat transfer body installs in the inside heat accumulation board of crystallization case including inlaying, the top of heat accumulation board is inlayed and is established and install the graphite heat-conducting layer, the top of graphite heat-conducting layer links up in the below on extinction heat accumulation layer, the inside of heat accumulation board is equipped with the fibre heat-conducting layer, inlay on the fibre heat-conducting layer and establish and install multiunit heat conduction stick, the outer end of heat conduction stick runs through and links up on the crystallization surface layer, and the heat accumulation after extinction heat accumulation layer receives sunshine, the heat of accumulating is conducted to the heat accumulation board in the graphite heat-conducting layer, and fibre heat-conducting layer and a plurality of heat conduction stick in the heat accumulation board conduct the heat to crystallization surface layer department, under the crystallization case environment that has the uniform temperature, are favorable to draining to the moisture of heat accumulation crystallization chamber department and evaporate and crystallize on the crystallization surface layer with heat.
Further, all seted up heat conduction hole on the lateral wall all around of heat accumulation board, the inside packing of heat conduction stick has the conduction oil, and the heat accumulation board is hollow out construction, does benefit to the heat transfer, and the heat conduction stick that packs and have high-efficient heat transfer effect more.
Furthermore, a water rising cavity is arranged between the crystallization surface layer and the water guide layer, a plurality of air holes are formed in the crystallization surface layer, a certain gap is reserved between the crystallization surface layer and the water guide layer, so that water can be heated to form water vapor, and the floating water vapor is finally crystallized on the crystallization surface layer.
Furthermore, a carbon fiber layer is attached to one side, close to the heat storage plate, of the crystallization surface layer, the crystallization surface layer is made of a heat conduction metal material, and the arrangement of the carbon fiber layer further improves the heating uniformity of the crystallization surface layer.
Furthermore, the light absorption and heat storage layer comprises a light absorption plate arranged above the heat storage crystallization cavity, a heat conduction gel layer connected with the inside of the crystallization box is filled in the light absorption plate, a plurality of carbon black fibers are embedded in the heat conduction gel layer, a black heat absorption film is laid on the top end of the light absorption plate, the black heat absorption film is matched with the heat conduction gel layer and the carbon black fibers to achieve good heat absorption performance, and natural light can be fully utilized to transfer heat to the crystallization box.
Further, transversely set up a plurality of run through between the tectorial membrane water conservancy diversion chamber and be equipped with a plurality of capillary honeycomb ducts, be equipped with fine hair on the capillary honeycomb duct, a plurality of capillary honeycomb ducts are favorable to the perfusion to saline and alkaline soil intraformational moisture can be drained to tectorial membrane water conservancy diversion chamber department and fully play horizontal drip washing effect.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is through seting up tectorial membrane water conservancy diversion chamber and the heat accumulation crystallization chamber of intercommunication each other in saline-alkali soil in situ portion, utilize a plurality of pre-buried perfusion pipes to the inside perfusion of saline-alkali soil in situ portion, moisture is through drainage of a plurality of tectorial membrane water conservancy diversion chambeies to heat accumulation crystallization chamber department, play the horizontal leaching effect of large tracts of land to saline-alkali soil in situ soil, the water that has the salinity is adsorbed by the water guide layer under the drainage effect, because the cooperation of the heat conductor in extinction heat accumulation layer and the crystallization incasement, make the inside temperature rise of crystallization incasement, the water that adsorbs in the water guide layer is met heat and the transpires the crystallization on the crystallization surface course that has the uniform temperature, realization that can be fine carries out horizontal large tracts of land leaching and is appeared to soil top layer and following salinity, it is efficient to apply, repair time is short, and still play fine moisturizing effect when effectively getting rid of salinity.
(2) The anti-seepage films are paved at the inner bottoms of the film-covered diversion cavities, the film-covered diversion cavities are obliquely and downwards arranged towards the heat storage crystallization cavity, the film-covered diversion cavities are obliquely arranged, so that the supplemented water can move towards one side of the heat storage crystallization cavity, the anti-seepage films are arranged, and the effect of preventing the saline water close to the ground surface from permeating towards the bottom of the ground is effectively achieved.
(3) Run through between a plurality of tectorial membrane water conservancy diversion chambeies that transversely set up and be equipped with a plurality of capillary honeycomb ducts, be equipped with fine hair on the capillary honeycomb duct, a plurality of capillary honeycomb ducts are favorable to the perfusion to saline and alkaline soil intraformational moisture can be drained to tectorial membrane water conservancy diversion chamber department and fully play horizontal drip washing effect.
(4) The top of a plurality of pre-buried flow pipes is connected with the inlet tube, and the bottom of a plurality of pre-buried flow pipes all is connected with the deep pipe of burying underground, and the bottom that the deep was buried the pipe underground extends to the bottom in bottommost tectorial membrane water conservancy diversion chamber, sets up the deep pipe of burying underground and effectively supplements the deep of moisture to saline and alkaline soil layer.
(5) The crystallization case is one side and the upper end all seted up open-ended cavity case, and the bottom of cavity case is equipped with the permeable formation, sets up the permeable formation, effectively will lead to the infiltration of unnecessary non-crystal water to the saline and alkaline soil layer deep layer in the crystallization case.
(6) The heat conduction body is installed in the heat accumulation board of crystallization incasement portion including inlaying, the top of heat accumulation board is inlayed and is installed the graphite heat-conducting layer, the top of graphite heat-conducting layer links up in the below on extinction heat accumulation layer, the inside of heat accumulation board is equipped with the fibre heat-conducting layer, inlay on the fibre heat-conducting layer and establish and install multiunit heat conduction stick, the outer end of heat conduction stick runs through and links up on the crystallization surface course, heat accumulation after extinction heat accumulation layer receives sunshine, the heat that the graphite heat-conducting layer will accumulate is to heat accumulation inboard conduction, fibre heat-conducting layer and a plurality of heat conduction stick in the heat accumulation board are with heat to crystallization surface course department conduction, under the crystallization case environment that has the uniform temperature, be favorable to the moisture of drainage to heat accumulation crystallization chamber department to evaporate and crystallize on the.
(7) Heat conduction holes are formed in the side walls of the heat storage plate, heat conduction oil is filled in the heat conduction rod, the heat storage plate is of a hollow structure, heat transfer is facilitated, and the heat conduction rod filled with the heat conduction oil has a high-efficiency heat transfer effect.
(8) There is moisture rising chamber between crystallization surface course and the water guide layer, has seted up a plurality of bleeder vents on the crystallization surface course, has certain space between crystallization surface course and the water guide layer to moisture meets heat and forms vapor, and the vapor that floats is devitrified on the crystallization surface course at last, and one side that the crystallization surface course is close to the heat accumulation board is attached to have the carbon fiber layer, and the crystallization surface course adopts heat conduction metal material to make, and the setting on carbon fiber layer further improves the homogeneity that the crystallization surface course is heated.
(9) The light absorption and heat storage layer comprises a light absorption plate arranged above a heat storage crystallization cavity, a heat conduction gel layer connected with the inside of the crystallization box is filled in the light absorption plate, a plurality of carbon black fibers are embedded in the heat conduction gel layer, a black heat absorption film is laid on the top end of the light absorption plate, the black heat absorption film is matched with the heat conduction gel layer and the carbon black fibers to achieve good heat absorption, and the natural light can be fully utilized to transfer heat to the crystallization box.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic perspective view of a saline-alkali soil layer after excavation according to the present invention;
FIG. 3 is a schematic perspective view of a saline-alkali soil layer after excavation;
FIG. 4 is a schematic perspective view of the pre-buried irrigation pipe of the present invention;
FIG. 5 is a schematic perspective view of the junction of the crystallization box, the water guiding layer and the light and heat absorbing and storing layer;
FIG. 6 is a schematic view of the separation of the junction of the crystallization box, the water guiding layer and the light absorption and heat storage layer;
FIG. 7 is a schematic side-sectional view of the junction of the crystallization box, the water guiding layer and the light absorption and heat storage layer.
The reference numbers in the figures illustrate:
1 saline-alkali soil layer, 101 tectorial membrane water conservancy diversion chamber, 102 heat accumulation crystallization chamber, 2 pre-buried perfusion pipes, 3 crystallization boxes, 4 water guide layers, 5 light absorption heat accumulation layers, 501 light absorption plate, 502 heat conduction gel layer, 503 carbon black fibre, 6 blast pipes, 7 heat accumulation boards, 8 graphite heat-conducting layers, 9 crystallization surface layers, 10 carbon fiber layers, 11 heat conduction stick, 12 fibre heat-conducting layers, 13 capillary honeycomb ducts.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be 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 specific cases to those skilled in the art.
Example 1:
referring to fig. 1-4 and fig. 6-7, a pre-buried double-effect restoration method based on saline-alkali soil includes the following steps:
s1, when a salt return season of the saline-alkali soil comes, a plurality of sets of film-coated flow guide cavities 101 corresponding in position are formed in the saline-alkali soil layer 1 in the vertical direction, a heat storage crystallization cavity 102 communicated with one ends of the film-coated flow guide cavities 101 is formed in the saline-alkali soil layer 1, a plurality of pre-buried irrigation pipes 2 inserted into the film-coated flow guide cavities 101 are buried in one end, far away from the heat storage crystallization cavity 102, of the saline-alkali soil layer 1, and irrigation holes are formed in the pre-buried irrigation pipes 2;
s2, pre-embedding and installing a crystallization box 3 with a heat conductor inside in a heat storage crystallization cavity 102, embedding and connecting a water guide layer 4 at one end of the crystallization box 3 close to a film-coated flow guide cavity 101, communicating a water guide layer 4 with a plurality of film-coated flow guide cavities 101, embedding and installing a crystallization surface layer 9 between the heat conductor and the water guide layer 4, and covering a light absorption and heat storage layer 5 connected with the crystallization box 3 at the top end part of the heat storage crystallization cavity 102;
s3, supplementing water into the saline-alkali soil layer 1 by utilizing the plurality of pre-buried irrigation pipes 2, enabling the water to permeate the saline-alkali soil layer 1 and flow to the heat storage crystallization cavity 102 along the film coating diversion cavity 101, and enabling the water guide layer 4 to adsorb the water and transmit the water to the crystallization box 3;
s4, when the sun irradiates on the light absorption and heat storage layer 5, the light absorption and heat storage layer 5 absorbs a large amount of heat and transfers the heat into the heat conductor, at the moment, the temperature in the crystallization box 3 rises, water introduced to the water guide layer 4 generates rising action under the action of the heat to generate steam, water containing salt is crystallized on the crystallization surface layer 9, and salt ions are enriched in the crystallization surface layer 9;
s5, excessive steam upwards seeps through a plurality of exhaust pipes 6 arranged on one side of the top end of the crystallization box 3, excessive water then downwards seeps, salt is separated out from the saline-alkali soil layer 1, certain water can be supplemented, the crystallization box 3 and the water guide layer 4 can be upwards dismantled for cleaning, and the long-term effect of the use of the pre-buried device is effectively realized.
Referring to fig. 2-4, an anti-seepage film is laid on the inner bottom of each of the plurality of film-covered diversion cavities 101, the plurality of film-covered diversion cavities 101 are arranged obliquely downward toward the heat storage crystallization cavity 102, the film-covered diversion cavities 101 are arranged obliquely so as to facilitate the movement of the supplemented water to one side of the heat storage crystallization cavity 102, the anti-seepage film is arranged so as to effectively prevent the permeation of saline water near the surface of the ground to the underground, a plurality of capillary draft tubes 13 are arranged between the plurality of film-covered diversion cavities 101 transversely arranged in a penetrating manner, fluff is arranged on the capillary draft tubes 13, the plurality of capillary draft tubes 13 facilitate the water perfused to the surface of the saline-alkali soil layer 1 to be drained to the film-covered diversion cavities 101 to fully play a role of transverse leaching, the top ends of the plurality of pre-buried perfusion tubes 2 are connected with water inlet tubes, the bottom ends of the plurality of pre-buried perfusion tubes 2 are connected with deep buried tubes, and, the deep buried pipe is arranged to effectively supplement water to the deep layer of the saline-alkali soil layer 1, and the deep moisturizing effect of soil is achieved.
Referring to fig. 5-7, the crystallization tank 3 is a hollow tank with an opening on one side and an upper end, the bottom of the hollow tank is provided with a permeable layer, the permeable layer is arranged to effectively permeate the excess non-crystallized water led into the crystallization tank 3 to the depth of the saline-alkali soil layer 1, the heat conductor comprises a heat storage plate 7 embedded inside the crystallization tank 3, the top end of the heat storage plate 7 is embedded with a graphite heat conduction layer 8, the top end of the graphite heat conduction layer 8 is connected to the lower part of the light absorption and heat storage layer 5, the inside of the heat storage plate 7 is provided with a fiber heat conduction layer 12, the fiber heat conduction layer 12 is embedded with a plurality of groups of heat conduction rods 11, the outer ends of the heat conduction rods 11 are connected to the crystallization surface layer 9 in a penetrating manner, the light absorption and heat storage layer 5 stores heat, the graphite heat conduction layer 8 conducts the stored heat into the heat storage plate 7, the fiber heat conduction layer 12 in the heat storage plate 7 is matched with the plurality of heat, in the environment of the crystallization box 3 with a certain temperature, the water which is guided to the heat storage crystallization cavity 102 is favorable to transpiration to crystallize on the crystallization surface layer 9, the salt content in the surface water is greatly reduced, the heat and the redundant gas generated in the crystallization box 3 are discharged through the exhaust pipe 6 connected to the crystallization box 3, and the upper part of the exhaust pipe 6 extends to the saline-alkali soil layer 1.
Heat conduction hole has all been seted up on the lateral wall all around of heat accumulation board 7, 11 inside packings of heat conduction stick have the conduction oil, heat accumulation board 7 is hollow out construction, do benefit to the heat transfer, and the packing has the heat conduction stick 11 of conduction oil more to have high-efficient heat transfer effect, it rises to rise to have moisture between crystallization surface course 9 and the water guide layer 4 and empty, a plurality of bleeder vents have been seted up on the crystallization surface course 9, there is certain space between crystallization surface course 9 and the water guide layer 4, so that moisture meets heat and forms vapor, unsteady vapor is last to be precipitated on crystallization surface course 9, and one side that crystallization surface course 9 is close to heat accumulation board 7 is attached with carbon fiber layer 10, and crystallization surface course 9 adopts heat conduction metal material to make, carbon fiber layer 10 set up the homogeneity that crystallization surface course 9 was heated has further improved.
The light absorption and heat storage layer 5 comprises a light absorption plate 501 arranged above the heat storage crystallization cavity 102, a heat conduction gel layer 502 which is connected with the inside of the crystallization box 3 is filled in the light absorption plate 501, a plurality of carbon black fibers 503 are embedded in the heat conduction gel layer 502, a black heat absorption film is laid on the top end of the light absorption plate 501, the black heat absorption film is matched with the heat conduction gel layer 502, and the carbon black fibers 503 play a good heat absorption role, so that natural light can be fully utilized to transfer heat to the crystallization box 3, and a heat transfer effect is achieved.
The invention discloses a method for improving the heat-insulating property of saline-alkali soil, which comprises the steps of arranging a film-covered flow guide cavity 101 and a heat-storage crystallization cavity 102 which are mutually communicated in a saline-alkali soil layer 1, perfusing the saline-alkali soil layer 1 by utilizing a plurality of pre-buried perfusion tubes 2, leading water to the heat-storage crystallization cavity 102 through the film-covered flow guide cavities 101, performing large-area transverse leaching on the saline-alkali soil layer 1, adsorbing the water with salt on a water guide layer 4 under the drainage action, raising the internal temperature of a crystallization box 3 due to the matching of a light-absorbing heat-storage layer 5 and a heat conductor in the crystallization box 3, evaporating and crystallizing the water adsorbed on the water guide layer 4 on a crystallization surface layer 9 with a certain temperature, well performing transverse precipitation on the salt on the surface layer of the soil and the salt below the surface layer, effectively removing the salt and simultaneously performing good moisture retention action, and additionally supplementing in large area, after the saline-alkali soil layer 1 is subjected to salt precipitation restoration, a proper amount of microbial agent can be injected into the soil by utilizing the pre-buried perfusion tube 2 so as to further improve the soil salinization problem.
The components used in the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. A pre-buried double-effect restoration method based on saline-alkali soil is characterized by comprising the following steps: the method comprises the following steps:
s1, when a salt return season of the saline-alkali soil comes, multiple sets of film-coated flow guide cavities (101) corresponding in position are formed in the saline-alkali soil layer (1) in the vertical direction, a heat storage crystallization cavity (102) communicated with one ends of the film-coated flow guide cavities (101) is formed in the saline-alkali soil layer (1), multiple embedded irrigation pipes (2) inserted into the film-coated flow guide cavities (101) are embedded in one end, far away from the heat storage crystallization cavity (102), of the saline-alkali soil layer (1), and irrigation holes are formed in the embedded irrigation pipes (2);
s2, pre-embedding and installing a crystallization box (3) with a heat conduction body inside in a heat storage crystallization cavity (102), embedding and connecting a water conduction layer (4) at one end, close to a film-coated water conduction cavity (101), of the crystallization box (3), wherein the water conduction layer (4) is communicated with a plurality of film-coated water conduction cavities (101), embedding and installing a crystallization surface layer (9) between the heat conduction body and the water conduction layer (4), and covering a light absorption and heat storage layer (5) connected with the crystallization box (3) at the top end part of the heat storage crystallization cavity (102);
s3, supplementing water into the saline-alkali soil layer (1) by utilizing the plurality of pre-buried irrigation pipes (2), enabling the water to permeate the saline-alkali soil layer (1) and flow to the heat storage crystallization cavity (102) along the film coating diversion cavity (101), and enabling the water guide layer (4) to adsorb the water and transmit the water to the crystallization box (3);
s4, when the sun irradiates on the light absorption and heat storage layer (5), the light absorption and heat storage layer (5) absorbs a large amount of heat and transfers the heat into the heat conductor, at the moment, the internal temperature of the crystallization box (3) rises, water introduced to the water guide layer (4) generates rising action under the action of the heat to generate steam, water containing salt is crystallized on the crystal surface layer (9), and salt ions are enriched in the crystal surface layer (9);
s5, excessive steam upwards seeps through a plurality of exhaust pipes (6) arranged on one side of the top end of the crystallization box (3), excessive water downwards seeps, salt is separated out from the saline-alkali soil layer (1), certain water can be supplemented, the crystallization box (3) and the water guide layer (4) can be upwards dismantled for cleaning, and the long-term effect of the use of the pre-buried device is effectively realized.
2. The pre-buried double-effect restoration method based on the saline-alkali soil as claimed in claim 1, which is characterized in that: and an anti-seepage film is paved at the inner bottom of the film-coated flow guide cavities (101), and the film-coated flow guide cavities (101) are inclined downwards towards the direction of the heat storage crystallization cavity (102).
3. The pre-buried double-effect restoration method based on the saline-alkali soil as claimed in claim 2, wherein the method comprises the following steps: the top of a plurality of pre-buried perfusion pipes (2) is connected with the inlet tube, and is a plurality of the bottom of pre-buried perfusion pipes (2) all is connected with the deep buried pipe, the bottom that the deep buried pipe was buried extends to the bottom of bottommost tectorial membrane water conservancy diversion chamber (101).
4. The pre-buried double-effect restoration method based on the saline-alkali soil as claimed in claim 1, which is characterized in that: crystallization case (3) all sets up the open-ended cavity case for one side and upper end, the bottom of cavity case is equipped with the permeable formation.
5. The pre-buried double-effect restoration method based on saline-alkali soil as claimed in claim 4, wherein the method comprises the following steps: the heat transfer body is including inlaying and establishing heat accumulation board (7) of installing in devitrification case (3) inside, the top of heat accumulation board (7) is inlayed and is established and install graphite heat-conducting layer (8), the top of graphite heat-conducting layer (8) links up in the below of extinction heat accumulation layer (5), the inside of heat accumulation board (7) is equipped with fibre heat-conducting layer (12), inlay on fibre heat-conducting layer (12) and establish and install multiunit heat conduction stick (11), the outer end of heat conduction stick (11) runs through and links up on crystallization surface layer (9).
6. The pre-buried double-effect restoration method based on saline-alkali soil as claimed in claim 5, characterized in that: heat conduction holes are formed in the side walls of the periphery of the heat storage plate (7), and heat conduction oil is filled in the heat conduction rod (11).
7. The pre-buried double-effect restoration method based on saline-alkali soil as claimed in claim 6, characterized in that: a water rising cavity is arranged between the crystallization surface layer (9) and the water guide layer (4), and a plurality of air holes are formed in the crystallization surface layer (9).
8. The pre-buried double-effect restoration method based on saline-alkali soil as claimed in claim 7, characterized in that: a carbon fiber layer (10) is attached to one side, close to the heat storage plate (7), of the crystallization surface layer (9), and the crystallization surface layer (9) is made of a heat-conducting metal material.
9. The pre-buried double-effect restoration method based on the saline-alkali soil as claimed in claim 1, which is characterized in that: the light absorption and heat storage layer (5) comprises a light absorption plate (501) arranged above the heat storage crystallization cavity (102), a heat conduction gel layer (502) which is connected with the inside of the crystallization box (3) is filled in the light absorption plate (501), a plurality of carbon black fibers (503) are embedded in the heat conduction gel layer (502), and a black heat absorption film is laid on the top end of the light absorption plate (501).
10. The pre-buried double-effect restoration method based on the saline-alkali soil as claimed in claim 1, which is characterized in that: transversely set up a plurality of run through between tectorial membrane water conservancy diversion chamber (101) and be equipped with a plurality of capillary honeycomb ducts (13), be equipped with fine hair on capillary honeycomb duct (13).
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