CN111872096A - Self-extending net type heavy metal contaminated soil remediation method - Google Patents
Self-extending net type heavy metal contaminated soil remediation method Download PDFInfo
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- CN111872096A CN111872096A CN202010570950.3A CN202010570950A CN111872096A CN 111872096 A CN111872096 A CN 111872096A CN 202010570950 A CN202010570950 A CN 202010570950A CN 111872096 A CN111872096 A CN 111872096A
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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
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
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Abstract
The invention discloses a self-extending net type heavy metal polluted soil restoration method, belonging to the technical field of soil restoration, which can realize the cooperation between a main restoration rod and an auxiliary restoration net pipe, adopts a pre-buried mode, automatically extends and connects in soil by utilizing the action of a magnetic field to form a restoration net, then regularly waters and uses the restoration net pipe as a carrier to transport and transfer heavy metal ions in the soil, simultaneously injects a heavy metal catching agent mixed with a magnetic adsorption ball from the auxiliary restoration net pipe, utilizes the hygroscopicity of the auxiliary restoration net pipe to gather water in the soil, the heavy metal catching agent catches heavy metal ions dissolved in the water, and the heavy metal ions are adsorbed and fixed by the magnetic adsorption ball, and are transferred and recovered to the main restoration rod under the action of the magnetic field, in addition, an auxiliary catching piece specially arranged on the auxiliary restoration net pipe plays a role of auxiliary restoration, and accelerates the permeation and gathering of the water and the catching efficiency of the heavy metal ions, thereby improving the repairing effect on the heavy metal polluted soil.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to a self-extending net type heavy metal contaminated soil remediation method.
Background
Soil remediation is a technical measure to restore normal function to contaminated soil. In the soil remediation industry, the existing soil remediation technologies can be more than one hundred, the common technologies can be more than ten, and the existing soil remediation technologies can be roughly divided into three methods, namely physical methods, chemical methods and biological methods. Since the 80 s in the 20 th century, many countries in the world, especially developed countries, have established and developed contaminated soil remediation and remediation programs, thus forming an emerging soil remediation industry.
The soil is one of the most basic material bases on which human beings rely to live, and is the final destination of various pollutants, and 90% of the pollutants in the world are finally retained in the soil. Because heavy metal pollutants have poor mobility in soil, long retention time, can not be degraded by microorganisms, and can finally influence human health through media such as water, plants and the like, measures are necessary for repairing the heavy metal polluted soil, and the soil heavy metal pollution repair at the present stage mainly comprises three major types, namely a physical method, a chemical method and a biological method.
The physical method for treating the heavy metal pollution of the soil has good effect and high efficiency, but the physical method often has the problems that the heavy metal pollution cannot be completely solved, only the pollution is transferred, and the secondary treatment is needed. The chemical method for treating the heavy metal pollution of the soil needs to select a proper treatment method, so that the treatment efficiency is higher, the treatment cost is higher, and secondary pollution is possibly caused. If the in-situ leaching method is adopted, the flow direction of the underground water must be cleaned so as not to pollute the underground water. The biological method is adopted for treating the heavy metal pollution of the soil, the cost is lower, the secondary pollution can not be caused, the ecological system of the soil can be repaired while the heavy metal is treated, but the heavy metal treatment efficiency is lower, the effect is poorer, and the treatment of the heavy metal pollution of the soil can not be efficiently finished.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a self-extending net type heavy metal polluted soil restoration method, which can realize the matching between a main restoration rod and an auxiliary restoration net pipe, adopts a pre-embedded mode, automatically extends and connects in soil by using the action of a magnetic field to form a restoration net, then regularly waters and uses the restoration net as a carrier to transport and transfer heavy metal ions in the soil, simultaneously injects a heavy metal catching agent mixed with a magnetic adsorption ball from the auxiliary restoration net pipe, uses the hygroscopicity of the auxiliary restoration net pipe to gather water in the soil, the heavy metal catching agent catches heavy metal ions dissolved in water, is adsorbed and fixed by the magnetic adsorption ball, simultaneously transfers and recovers to the main restoration rod under the action of the magnetic field, and in addition, an auxiliary catching piece specially arranged on the auxiliary restoration net pipe plays a role in auxiliary restoration, the infiltration and the collection of the water and the capture efficiency of the heavy metal ions are accelerated, so that the remediation effect of the heavy metal polluted soil is improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A self-extending net type heavy metal contaminated soil remediation method comprises the following steps:
s1, uniformly excavating a plurality of first pre-buried pits on the heavy metal polluted soil to be repaired, and then uniformly excavating a plurality of second pre-buried pits around the first pre-buried pits;
s2, embedding a main repairing rod into the first embedded pit, embedding an auxiliary repairing pipe into the second embedded pit, extending one end of the auxiliary repairing pipe to the upper side of the ground surface, and backfilling the first embedded pit and the second embedded pit;
s3, triggering a magnetic field in the main repair rod, actively pulling the adjacent auxiliary repair net pipe by utilizing the magnetic attraction effect to establish a repair connection line with the auxiliary repair net pipe, forming an integral repair net by the repair connection lines together, and closing the magnetic field;
s4, watering the soil regularly twice every day, and immediately injecting the heavy metal capture agent mixed with the magnetic adsorption balls into the auxiliary repair net forming pipe after watering;
s5, carrying and gathering heavy metal ions to the vicinity of the auxiliary repair mesh pipe by water under the action of osmosis, and then capturing and fixing the heavy metal ions by a magnetic adsorption ball matched with a heavy metal capturing agent;
and S6, continuously triggering the magnetic field to recover the magnetic adsorption balls, and treating and desorbing the magnetic adsorption balls after recovery to continuously put into use.
Furthermore, the embedding density of the main repairing rods is not less than 1 square meter per 10 square meters, and the auxiliary repairing pipes surrounding the main repairing rods are repaired into not less than 4 net pipes, so that reasonable repairing net density is ensured, the repairing effect on heavy metal polluted soil can be improved, the resource utilization can be maximized, and the repairing cost can be reasonably controlled.
Furthermore, the main repairing rod comprises a hollow rod body and a recovering cover in threaded connection with the upper end of the hollow rod body, the lower end of the hollow rod body is fixedly connected with a communicated net-forming central ball, the inner bottom end of the net-forming central ball is fixedly connected with a height supplementing column, a repairing electromagnet positioned in the center of the net-forming central ball is embedded and connected in the height supplementing column, a recovering electromagnet is embedded and connected in the recovering cover, a plurality of butt-joint holes which are uniformly distributed are formed in the outer surface of the net-forming central ball, the butt-joint holes correspond to the auxiliary repairing net pipes, a rubber sealing block with holes is embedded and connected in the butt-joint holes, the magnetic balls are actively adsorbed and guided by the magnetic field generated by the repairing electromagnet, so that the repairing net is formed by being connected with the auxiliary repairing net pipes, the recovering electromagnet plays a role in directly recovering the magnetic adsorption balls, and the whole main repairing rod is prevented from being, the recovery efficiency is improved.
Furthermore, one end of the auxiliary repairing net pipe is fixedly connected with a feeding soil embedding ball, the feeding soil embedding ball is embedded on the ground surface, the other end of the auxiliary repairing net pipe is fixedly connected with a guiding magnetic ball, the area ratio of the guiding magnetic ball to the perforated rubber sealing block is 1:3-5, the feeding soil embedding ball plays a role in fixing the auxiliary repairing net pipe on one hand, the auxiliary repairing net pipe is prevented from being pulled to excessively enter soil when the auxiliary repairing net pipe is connected, on the other hand, a technician can conveniently inject a repairing object into the auxiliary repairing net pipe, the guiding magnetic ball plays a role in responding to a repairing electromagnet magnetic field, the auxiliary repairing net pipe can be guided to be connected with the main repairing rod, meanwhile, the sectional area of the auxiliary repairing net pipe is smaller than that of the perforated rubber sealing block, a certain degree of butt joint error can be ignored, and the smoothness degree of butt joint of the auxiliary repairing net pipe and the main.
Furthermore, a plurality of uniformly distributed wire outlet holes are formed in the heavy soil wire dividing ball, the diameter of the guide magnetic ball is larger than the inner diameter of the wire outlet hole, the heavy soil wire dividing ball has a wire dividing effect, the effect of effectively concentrating a plurality of strands of auxiliary repair wire dividing balls can be achieved, uniform management of technicians is facilitated, meanwhile, the heavy soil wire dividing ball can shield magnetic fields in other directions, and the guide magnetic ball on the auxiliary repair wire dividing ball responds to the magnetic field in a characteristic direction to be connected.
Furthermore, a plurality of auxiliary capturing pieces which are uniformly distributed are embedded and connected on the auxiliary repairing mesh pipe, a plurality of uniformly distributed capturing holes are further formed in the auxiliary repairing mesh pipe, the capturing holes and the auxiliary capturing pieces are distributed in a staggered mode, the auxiliary capturing pieces play a role in auxiliary repairing, permeation and aggregation of moisture and capturing efficiency of heavy metal ions are accelerated, accordingly, the repairing effect of heavy metal polluted soil is improved, and the capturing holes provide channels for the contact of the moisture with the heavy metal capturing agent and the magnetic adsorption balls.
Furthermore, the auxiliary capturing part comprises an inflatable embedded ball and a gapped water diversion wire fixedly connected to the inflatable embedded ball, the gapped water diversion wire penetrates through the auxiliary repairing net tube and extends to the outer side of the auxiliary repairing net tube, a telescopic elastic air bag is fixedly connected between the inflatable embedded ball and the gapped water diversion wire and is communicated with the inflatable embedded ball, one end, away from the telescopic elastic air bag, of the gapped water diversion wire is fixedly connected with a plurality of uniformly distributed soil breaking thorns, the magnetic adsorption ball inevitably extrudes the inflatable embedded ball when migrating in the auxiliary repairing net tube, so that the telescopic elastic air bag is inflated to force the inflatable embedded ball to expand, then the gapped water diversion wire is pressed to erect by the telescopic elastic air bag under the action of the skin pileus, on one hand, the hardening performance of soil near the auxiliary repairing net tube can be improved, and a water leakage pore for gathering water is formed, on the other hand, the mixing degree of the heavy metal catching agent and water can be improved, the catching effect of heavy metal ions is improved, the soil breaking prickle plays a role in breaking soil, and the smoothness of the rising of the gapped water guide wire is improved.
Further, aerify embedded ball and include the inflatable hemisphere and the embedded hemisphere of a body coupling, and aerify the hemisphere and inlay and connect on vice restoration web pipe inner wall, aerify the hemisphere and expose on vice restoration web pipe inner wall, it adopts the elastic material to make to aerify the hemisphere, embedded hemisphere adopts hard material to make, aerifys the hemisphere and has elastic deformation's ability to the realization is to the inflation and deflation pneumatic action of telescopic elastic air bag, and embedded hemisphere then plays the whole supporting role to supplementary seizure piece.
Furthermore, the magnetic adsorption ball comprises a magnetic inner ball and an adsorption surface layer covering the outer surface of the magnetic inner ball, a plurality of auxiliary fiber yarns which are distributed dispersedly are fixedly connected on the magnetic inner ball, the auxiliary fiber threads penetrate through the adsorption surface layer and extend to the outer side of the adsorption surface layer, the magnetic inner ball endows the magnetic adsorption ball with magnetism, can be close to the main repairing rod along with the heavy metal catching agent in the auxiliary repairing mesh pipe under the magnetic field action of the electromagnet for repairing, the adsorption surface layer can adsorb the fixed and captured heavy metal, the auxiliary fiber wire can play the role of fixing and combining the adsorption surface layer on one hand, the bonding strength between the magnetic inner ball and the adsorption surface layer is improved, and on the other hand, the heavy metal catching agent and water can be stirred and mixed in the moving process, the catching effect on heavy metal ions is improved, meanwhile, the moisture-conducting device can play a certain role in conducting moisture, and extends outwards from the catching hole to promote the absorption of moisture in soil.
Furthermore, the adsorption surface layer is made of porous adsorption materials, the adsorption surface layer is in clearance fit with the auxiliary repair net pipes and used for adsorbing and transferring the captured and stabilized heavy metals, the heavy metals are directly replaced from soil to be desorbed and recovered, the particle size of the magnetic adsorption balls is kept in smooth migration in the auxiliary repair net pipes, and meanwhile, the magnetic adsorption balls have an obvious extrusion effect on the auxiliary capturing pieces, so that the auxiliary actions of the auxiliary capturing pieces are triggered.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme can realize the matching between the main repairing rod and the auxiliary repairing pipe, adopts the pre-embedded mode, the heavy metal ions in the soil are automatically extended and connected to form a repairing net under the action of a magnetic field, then the repairing net is watered regularly and is used as a carrier to transport and transfer the heavy metal ions in the soil, meanwhile, a heavy metal trapping agent mixed with a magnetic adsorption ball is injected from the auxiliary repairing mesh pipe, the moisture absorption of the auxiliary repairing mesh pipe is utilized to gather the water in the soil, the heavy metal trapping agent traps heavy metal ions dissolved in the water and is adsorbed and fixed by the magnetic adsorption ball, meanwhile, the water is transferred to the main repairing rod and recovered under the action of a magnetic field, and in addition, an auxiliary capturing piece specially arranged on the auxiliary repairing mesh forming pipe plays a role in auxiliary repairing, so that the permeation and aggregation of water and the capturing efficiency of heavy metal ions are accelerated, and the repairing effect on the heavy metal polluted soil is improved.
(2) The embedding density of the main repairing rods is not less than 1 square meter per 10 square meters, and the auxiliary repairing pipes surrounding the main repairing rods are repaired into not less than 4 net pipes, so that the reasonable density of repairing nets is ensured, the repairing effect on heavy metal polluted soil can be improved on one hand, the resource utilization can be maximized, and the repairing cost can be reasonably controlled on the other hand.
(3) The main repairing rod comprises a hollow rod body and a recovering cover connected to the upper end of the hollow rod body in a threaded mode, a net-forming central ball communicated with the lower end of the hollow rod body is fixedly connected to the inner bottom end of the net-forming central ball, a height supplementing column is fixedly connected to the inner bottom end of the net-forming central ball in an embedded mode, a repairing electromagnet located in the center of the net-forming central ball is connected to the recovering cover in an embedded mode, a plurality of butt joint holes evenly distributed are formed in the outer surface of the net-forming central ball and correspond to the auxiliary repairing net pipes, a rubber sealing block with holes is connected to the butt joint holes in an embedded mode, the magnetic balls are guided by active adsorption through the magnetic field effect generated by the repairing electromagnet, accordingly, the repairing net pipes are connected to form a repairing net, the recovering electromagnet plays a role in directly recovering the magnetic adsorption balls, the main repairing rod is prevented from.
(4) One end of the auxiliary repairing net pipe is fixedly connected with a feeding soil embedding ball, the feeding soil embedding ball is embedded on the ground surface, the other end of the auxiliary repairing net pipe is fixedly connected with a guiding magnetic ball, the area ratio of the guiding magnetic ball to the rubber sealing block with holes is 1:3-5, the feeding soil embedding ball plays a role in fixing the auxiliary repairing net pipe on one hand, the auxiliary repairing net pipe is prevented from excessively entering the soil when being connected, on the other hand, a technician can conveniently inject a repairing object into the auxiliary repairing net pipe, the guiding magnetic ball plays a role in responding to the electromagnetic field of the electromagnet for repairing, the auxiliary repairing net pipe can be guided to be connected with the main repairing rod, meanwhile, the sectional area of the guiding magnetic ball is smaller than that of the rubber sealing block with holes, the connecting error of a certain degree can be ignored, and the smoothness degree of the auxiliary repairing net pipe when being connected with the main.
(5) The soil-sinking branching ball made of magnetism-isolating materials is sleeved in the middle of the secondary restoration network pipe, a plurality of evenly-distributed wire outlet holes are formed in the soil-sinking branching ball, the diameter of the guiding magnetic ball is larger than the inner diameter of the wire outlet holes, the soil-sinking branching ball has the branching function, the effect of effectively concentrating a plurality of strands of secondary restoration network pipes can be achieved, uniform management of technicians is facilitated, meanwhile, the soil-sinking branching ball can shield magnetic fields in other directions, and the guiding magnetic ball on the secondary restoration network pipes can respond to the magnetic fields in the characteristic directions to be connected.
(6) The auxiliary repairing net forming pipe is connected with a plurality of auxiliary capturing pieces which are uniformly distributed in an embedded mode, a plurality of uniformly distributed capturing holes are further formed in the auxiliary repairing net forming pipe, the capturing holes and the auxiliary capturing pieces are distributed in a staggered mode, the auxiliary capturing pieces play a role in auxiliary repairing, permeation and gathering of moisture and capturing efficiency of heavy metal ions are accelerated, accordingly, the repairing effect of heavy metal polluted soil is improved, and the capturing holes provide a channel for the moisture to be in contact with a heavy metal capturing agent and a magnetic adsorption ball.
(7) The auxiliary catching member comprises an inflatable embedded ball and a gapped water diversion wire fixedly connected to the inflatable embedded ball, the gapped water diversion wire penetrates through the auxiliary repairing mesh tube and extends to the outer side of the auxiliary repairing mesh tube, a telescopic elastic air bag is fixedly connected between the inflatable embedded ball and the gapped water diversion wire and is communicated with the inflatable embedded ball, one end, away from the telescopic elastic air bag, of the gapped water diversion wire is fixedly connected with a plurality of uniformly distributed soil breaking thorns, the magnetic adsorption ball inevitably extrudes the inflatable embedded ball when migrating in the auxiliary repairing mesh tube, so that the telescopic elastic air bag is inflated to force the extensible expansion, then the gapped water diversion wire is pressed to stand up by the telescopic elastic air bag under the action of skin pileus muscles, on one hand, the hardening performance of soil near the auxiliary repairing mesh tube can be improved, water gathering water draining pores are formed, on the other hand, the mixing degree of the heavy metal catching agent and water can be improved, the catching effect on heavy metal ions is improved, the soil breaking prickles have the effect of breaking soil, and the smoothness of the rising of the gapped water guide wires is improved.
(8) Aerify embedded ball includes inflatable hemisphere and the embedded hemisphere of integrative connection, and inflatable hemisphere inlays and connects on vice restoration web-formed inner wall, and inflatable hemisphere exposes on vice restoration web-formed inner wall, and inflatable hemisphere adopts the elasticity material to make, and embedded hemisphere adopts hard material to make, and inflatable hemisphere has elastic deformation's ability to the realization is to the inflation and deflation pneumatic action of telescopic elastic air bag, and embedded hemisphere then plays the whole supporting role to supplementary seizure piece.
(9) The magnetic adsorption ball comprises a magnetic inner ball and an adsorption surface layer covering the outer surface of the magnetic inner ball, a plurality of auxiliary fiber yarns which are distributed dispersedly are fixedly connected on the magnetic inner ball, the auxiliary fiber threads penetrate through the adsorption surface layer and extend to the outer side of the adsorption surface layer, the magnetic inner ball endows the magnetic adsorption ball with magnetism, can be close to the main repairing rod along with the heavy metal catching agent in the auxiliary repairing mesh pipe under the magnetic field action of the electromagnet for repairing, the adsorption surface layer can adsorb the fixed and captured heavy metal, the auxiliary fiber wire can play the role of fixing and combining the adsorption surface layer on one hand, the bonding strength between the magnetic inner ball and the adsorption surface layer is improved, and on the other hand, the heavy metal catching agent and water can be stirred and mixed in the moving process, the catching effect on heavy metal ions is improved, meanwhile, the moisture-conducting device can play a certain role in conducting moisture, and extends outwards from the catching hole to promote the absorption of moisture in soil.
(10) The adsorption surface layer is made of porous adsorption materials, the magnetic adsorption balls and the auxiliary repair mesh pipes are in clearance fit with the adsorption surface layer to adsorb and transfer the captured and stabilized heavy metals, the heavy metals are directly replaced out of soil to be desorbed and recovered, the particle size of the magnetic adsorption balls is kept in smooth migration in the auxiliary repair mesh pipes, and meanwhile, the magnetic adsorption balls have an obvious extrusion effect on the auxiliary capturing pieces, so that the auxiliary actions of the auxiliary capturing pieces are triggered.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a primary repair rod of the present invention;
FIG. 3 is a schematic view of the construction of a secondary repair mesh tube section of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic structural view of the magnetic adsorption ball of the present invention;
fig. 6 is a schematic structural diagram of the overall network management system repaired by the auxiliary system of the present invention.
The reference numbers in the figures illustrate:
the device comprises a main repairing rod 1, a hollow rod body 101, a recovery cover 102, a feeding soil embedding ball 2, a repairing mesh pipe 3, a mesh forming central ball 4, a height supplementing column 5, a repairing electromagnet 6, a perforated rubber sealing block 7, an auxiliary capturing piece 8, an inflatable hemisphere 801, an embedded hemisphere 802, a slotted water diversion wire 803, a telescopic elastic air bag 804, a ground breaking spine 805, a magnetic adsorption ball 9, a magnetic inner ball 901, an adsorption surface layer 902, an auxiliary fiber wire 903, a recovery electromagnet 10, a soil sinking parting ball 11 and a guiding magnetic ball 12.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope 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, a self-extending net type heavy metal contaminated soil remediation method includes the following steps:
s1, uniformly excavating a plurality of first pre-buried pits on the heavy metal polluted soil to be repaired, and then uniformly excavating a plurality of second pre-buried pits around the first pre-buried pits;
s2, embedding a main repairing rod 1 into the first embedded pit, embedding an auxiliary repairing pipe 3 into the second embedded pit, extending one end of the auxiliary repairing pipe 3 to the upper side of the ground surface, and backfilling the first embedded pit and the second embedded pit;
s3, triggering the magnetic field in the main repair rod 1, actively pulling the adjacent auxiliary repair net pipe 3 by using the magnetic attraction effect to establish a repair connection line with the auxiliary repair net pipe, forming an integral repair net by a plurality of repair connection lines together, and closing the magnetic field;
s4, watering the soil regularly twice every day, and immediately injecting the heavy metal capture agent mixed with the magnetic adsorption ball 9 into the auxiliary repairing mesh pipe 3 after watering;
s5, carrying and gathering heavy metal ions to the vicinity of the auxiliary repairing mesh tube 3 by water under the action of osmosis, and then capturing and fixing the heavy metal ions by the magnetic adsorption ball 9 in cooperation with a heavy metal capturing agent;
and S6, continuously triggering the magnetic field to recover the magnetic adsorption balls 9, and treating and desorbing the recovered magnetic adsorption balls for continuous use.
The embedding density of the main repairing rods 1 is not less than 1 square meter per 10 square meters, and the auxiliary pairs surrounding the main repairing rods 1 are repaired into the net pipes 3 which are not less than 4, so that the reasonable density of the repairing nets is ensured, the repairing effect on heavy metal polluted soil can be improved on one hand, the resource utilization can be maximized, and the repairing cost can be reasonably controlled on the other hand.
Referring to fig. 2, a main repairing rod 1 includes a hollow rod 101 and a recovering cover 102 screwed to the upper end of the hollow rod 101, the lower end of the hollow rod 101 is fixedly connected with a mesh-forming central ball 4, the inner bottom end of the mesh-forming central ball 4 is fixedly connected with a height-increasing column 5, a repairing electromagnet 6 positioned at the center of the mesh-forming central ball 4 is embedded and connected in the height-increasing column 5, a recovering electromagnet 10 is embedded and connected in the recovering cover 102, the outer surface of the mesh-forming central ball 4 is provided with a plurality of evenly distributed butt-joint holes corresponding to a secondary repairing mesh tube 3, a perforated rubber sealing block 7 is embedded and connected in the butt-joint holes, the center of the perforated rubber sealing block 7 is provided with micropores capable of opening under the extrusion action of guiding the magnetic balls 12, closing and isolating soil under normal state, the guiding magnetic balls 12 are actively adsorbed by the magnetic field action generated by the repairing electromagnet 6, thereby establishing connection with the secondary repairing mesh tube 3 to form a repairing mesh, the recovery electromagnet 10 plays a role in directly recovering the magnetic adsorption ball 9, so that the main repair rod 1 is prevented from being integrally taken out and buried, and the recovery efficiency is improved.
Referring to fig. 6, the auxiliary repairing net tube 3 is made of flexible material, such as plastic, rubber, silica gel, etc., one end of the auxiliary repairing net tube 3 is fixedly connected with the feeding soil-embedding ball 2, the feeding soil-embedding ball 2 is embedded on the ground surface, the other end is fixedly connected with the guiding magnetic ball 12, the area ratio of the guiding magnetic ball 12 to the rubber sealing block 7 with holes is 1:3-5, the feeding soil-embedding ball 2 plays a role of fixing the auxiliary repairing net tube 3 on one hand, prevents the auxiliary repairing net tube 3 from being dragged to excessively enter the soil when establishing connection, on the other hand, facilitates technicians to inject repairing objects into the auxiliary repairing net tube 3, the guiding magnetic ball 12 plays a role of responding to the magnetic field of the electromagnet 6 for repairing, can guide the auxiliary repairing net tube 3 to be connected with the main repairing rod 1, and simultaneously has a smaller sectional area than the rubber sealing block 7 with holes, which is beneficial to neglect a certain degree of butt joint error, the smoothness of the butt joint of the auxiliary repairing net pipe 3 and the main repairing rod 1 is improved.
The soil-sinking branching ball 11 made of magnetism isolating materials is sleeved in the middle of the auxiliary restoration net pipe 3, a plurality of evenly-distributed wire outlet holes are formed in the soil-sinking branching ball 11, the diameter of the guide magnetic ball 12 is larger than the inner diameter of the wire outlet holes, the soil-sinking branching ball 11 plays a branching role, the effect of effectively concentrating a plurality of strands of auxiliary restoration net pipes 3 can be achieved, uniform management of technical personnel is facilitated, meanwhile, the soil-sinking branching ball 11 can shield magnetic fields in other directions, and the guide magnetic ball 12 on the auxiliary restoration net pipes 3 can respond to the magnetic field in a characteristic direction to be connected.
Please refer to fig. 3, the auxiliary repairing mesh tube 3 is connected with a plurality of auxiliary capturing members 8 which are uniformly distributed, a plurality of uniformly distributed capturing holes are further formed on the auxiliary repairing mesh tube 3, the capturing holes should keep a smaller aperture, so that the magnetic adsorption balls 9 can not fall off and the heavy metal capturing agent can not be lost too much, the capturing holes and the auxiliary capturing members 8 are distributed in a staggered manner, the auxiliary capturing members 8 play a role in auxiliary repairing, the permeation and collection of moisture and the capturing efficiency of heavy metal ions are accelerated, the repairing effect on the heavy metal polluted soil is improved, and the capturing holes provide a channel for the contact of the moisture and the heavy metal capturing agent with the magnetic adsorption balls 9.
Referring to fig. 4, the auxiliary capturing member 8 includes an inflatable embedded ball and a slotted water guiding filament 803 fixedly connected to the inflatable embedded ball, the slotted water guiding filament 803 passes through the subsidiary repaired mesh tube 3 and extends to the outside of the subsidiary repaired mesh tube 3, a telescopic elastic air bag 804 is fixedly connected between the inflatable embedded ball and the slotted water guiding filament 803, the telescopic elastic air bag 804 is communicated with the inflatable embedded ball, one end of the slotted water guiding filament 803, which is far away from the telescopic elastic air bag 804, is fixedly connected with a plurality of evenly distributed ground-breaking thorns 805, the magnetic adsorption ball 9 inevitably extrudes the inflatable embedded ball when moving in the subsidiary repaired mesh tube 3, thereby inflating the telescopic elastic air bag 804 to force the telescopic elastic air bag 804 to extend and expand, then the slotted water guiding filament 803 is pressed to stand up by the action of the telescopic elastic air bag 804 imitating the skin pileus, on the one hand, the hardening performance of the soil near the subsidiary repaired mesh tube 3 can be improved, the water-flowing holes for gathering water are formed, on the other hand, the mixing degree of the heavy metal catching agent and water can be improved, the catching effect on heavy metal ions is improved, the soil-breaking thorns 805 play a role in breaking soil and improving the smoothness of the rising of the gapped water-leading wires 803, the inflatable embedded ball comprises an inflatable hemisphere 801 and an embedded hemisphere 802 which are integrally connected, the inflatable hemisphere 801 is connected to the inner wall of the auxiliary restoration mesh tube 3 in an embedded mode, the inflatable hemisphere 801 is exposed on the inner wall of the auxiliary restoration mesh tube 3, the inflatable hemisphere 801 is made of elastic materials, the embedded hemisphere 802 is made of hard materials, the inflatable hemisphere 801 has the elastic deformation capacity, accordingly, the inflation and deflation actions on the telescopic elastic air bag 804 are achieved, and the embedded hemisphere 802 plays an integral supporting role on the auxiliary catching piece 8.
Referring to fig. 5, the magnetic adsorption ball 9 includes a magnetic inner ball 901 and an adsorption surface layer 902 covering the outer surface of the magnetic inner ball 901, the magnetic inner ball 901 and the guiding magnetic ball 12 are both made of magnetic materials, a plurality of auxiliary fiber filaments 903 distributed dispersedly are fixedly connected to the magnetic inner ball 901, the auxiliary fiber filaments 903 penetrate through the adsorption surface layer 902 and extend to the outer side of the adsorption surface layer 902, the magnetic inner ball 901 gives magnetism to the magnetic adsorption ball 9, the magnetic adsorption surface layer 902 can adsorb heavy metals after fixed capture in the auxiliary repair mesh tube 3 along with the heavy metal capture agent under the action of the magnetic field of the repair electromagnet 6, the auxiliary fiber filaments 903 on one hand play a role in fixed combination with the adsorption surface layer 902 and improve the combination strength between the magnetic inner ball 901 and the adsorption surface layer 902, on the other hand can stir and mix the heavy metal capture agent and water during the movement process, improve the seizure effect to heavy metal ion, also can play certain wet effect of leading simultaneously, outwards extend the absorption that promotes moisture in to soil in catching hole department, it adopts porous adsorption material to make to adsorb the top layer 902, and magnetic adsorption ball 9 and vice restoration become between the network management 3 clearance fit adsorb the top layer 902 and be used for adsorbing the transfer to catching the heavy metal after stabilizing, directly replace away from in the soil and carry out desorption recovery, the particle diameter of magnetic adsorption ball 9 should keep can be in vice restoration become smooth migration in the network management 3, have obvious squeezing action to supplementary seizure piece 8 simultaneously, thereby trigger the supplementary action of supplementary seizure piece 8.
It should be noted that the auxiliary repairing component 3 of the present invention, which is located at the front end of the soil-sinking branching ball 11, does not need to be provided with the auxiliary capturing member 8 and the capturing hole, so as to increase the migration speed of the magnetic adsorption ball 9 and the heavy metal capturing agent, and avoid waste caused by early release.
The invention can realize the matching between the main repairing rod 1 and the auxiliary repairing net pipe 3, adopts the pre-embedded mode, the heavy metal ions in the soil are automatically extended and connected to form a repairing net under the action of a magnetic field, then the repairing net is watered regularly and is used as a carrier to transport and transfer the heavy metal ions in the soil, meanwhile, a heavy metal trapping agent mixed with the magnetic adsorption balls 9 is injected from the auxiliary repairing mesh pipe 3, the moisture absorption of the auxiliary repairing mesh pipe 3 is utilized to gather the water in the soil, the heavy metal trapping agent traps heavy metal ions dissolved in the water and is adsorbed and fixed by the magnetic adsorption balls 9, meanwhile, the water is transferred to the main repairing rod 1 and recovered under the action of a magnetic field, and in addition, the auxiliary capturing piece 8 specially arranged on the auxiliary repairing mesh pipe 3 plays a role in auxiliary repairing, so that the permeation and aggregation of water and the capturing efficiency of heavy metal ions are accelerated, and the repairing effect on the heavy metal polluted soil is improved.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. A self-extending net type heavy metal contaminated soil remediation method is characterized by comprising the following steps: the method comprises the following steps:
s1, uniformly excavating a plurality of first pre-buried pits on the heavy metal polluted soil to be repaired, and then uniformly excavating a plurality of second pre-buried pits around the first pre-buried pits;
s2, embedding a main repairing rod (1) into the first embedded pit, embedding an auxiliary repairing network pipe (3) into the second embedded pit, extending one end of the auxiliary repairing network pipe (3) to the upper side of the ground surface, and backfilling the first embedded pit and the second embedded pit;
s3, triggering a magnetic field in the main repair rod (1), actively pulling the adjacent auxiliary repair net pipe (3) by utilizing the magnetic attraction effect to establish a repair connection line with the auxiliary repair net pipe, forming an integral repair net by a plurality of repair connection lines together, and closing the magnetic field;
s4, watering the soil twice at regular time every day, and immediately injecting a heavy metal trapping agent mixed with a magnetic adsorption ball (9) into the auxiliary repairing net pipe (3) after watering;
s5, carrying and gathering heavy metal ions to the vicinity of the auxiliary repairing mesh pipe (3) by water under the action of osmosis, and then capturing and fixing the heavy metal ions by a magnetic adsorption ball (9) in cooperation with a heavy metal capturing agent;
and S6, continuously triggering the magnetic field to recover the magnetic adsorption balls (9), and treating and desorbing the recovered magnetic adsorption balls to be continuously put into use.
2. The self-extending net type heavy metal contaminated soil remediation method according to claim 1, wherein: the embedding density of the main repairing rods (1) is not less than 1 square meter per 10 square meters, and the auxiliary repairing net pipes (3) surrounding the main repairing rods (1) are not less than 4.
3. The self-extending net type heavy metal contaminated soil remediation method according to claim 1, wherein: the main repairing rod (1) comprises a hollow rod body (101) and a recovering cover (102) in threaded connection with the upper end of the hollow rod body (101), a net-forming central ball (4) communicated with the lower end of the hollow rod body (101) is fixedly connected with a height supplementing column (5), a repairing electromagnet (6) located at the center of the net-forming central ball (4) is connected into the height supplementing column (5) in an embedded mode, a recovering electromagnet (10) is connected into the recovering cover (102) in an embedded mode, a plurality of butt-joint holes which are evenly distributed are formed in the outer surface of the net-forming central ball (4), the butt-joint holes correspond to the auxiliary repairing net-forming pipes (3), and a rubber sealing block (7) with holes is connected into the butt-joint holes in an embedded mode.
4. The self-extending net type heavy metal contaminated soil remediation method according to claim 3, wherein: one end of the auxiliary repairing net forming pipe (3) is fixedly connected with the feeding soil embedding ball (2), the feeding soil embedding ball (2) is embedded on the ground surface, the other end of the auxiliary repairing net forming pipe is fixedly connected with the guiding magnetic ball (12), and the area ratio of the guiding magnetic ball (12) to the rubber sealing block (7) with the hole is 1: 3-5.
5. The self-extending net type heavy metal contaminated soil remediation method according to claim 4, wherein: the auxiliary repairing net pipe (3) is sleeved with a soil-sinking line dividing ball (11) made of a magnetism isolating material, a plurality of evenly distributed wire outlets are formed in the soil-sinking line dividing ball (11), and the diameter of the guiding magnetic ball (12) is larger than the inner diameter of each wire outlet.
6. The self-extending net type heavy metal contaminated soil remediation method according to claim 1, wherein: the auxiliary repairing net forming pipe (3) is connected with a plurality of auxiliary capturing pieces (8) which are uniformly distributed in an embedded mode, a plurality of capturing holes which are uniformly distributed are further formed in the auxiliary repairing net forming pipe (3), and the capturing holes and the auxiliary capturing pieces (8) are distributed in a staggered mode.
7. The self-extending net type heavy metal contaminated soil remediation method according to claim 6, wherein: the auxiliary capturing piece (8) comprises an inflatable embedded ball and a gapped water guiding wire (803) fixedly connected to the inflatable embedded ball, the gapped water guiding wire (803) penetrates through the auxiliary repairing net pipe (3) and extends to the outer side of the auxiliary repairing net pipe (3), a telescopic elastic air bag (804) is fixedly connected between the inflatable embedded ball and the gapped water guiding wire (803), the telescopic elastic air bag (804) is communicated with the inflatable embedded ball, and a plurality of uniformly distributed soil breaking thorns (805) are fixedly connected to one end, away from the telescopic elastic air bag (804), of the gapped water guiding wire (803).
8. The self-extending net type heavy metal contaminated soil remediation method according to claim 7, wherein: the inflatable embedded ball comprises an inflatable hemisphere (801) and an embedded hemisphere (802) which are integrally connected, the inflatable hemisphere (801) is connected to the inner wall of the auxiliary restoration mesh pipe (3) in an embedded mode, the inflatable hemisphere (801) is exposed on the inner wall of the auxiliary restoration mesh pipe (3), the inflatable hemisphere (801) is made of elastic materials, and the embedded hemisphere (802) is made of hard materials.
9. The self-extending net type heavy metal contaminated soil remediation method according to claim 7, wherein: the magnetic adsorption ball (9) comprises a magnetic inner ball (901) and an adsorption surface layer (902) covering the outer surface of the magnetic inner ball (901), a plurality of auxiliary fiber yarns (903) distributed in a dispersing manner are fixedly connected to the magnetic inner ball (901), and the auxiliary fiber yarns (903) penetrate through the adsorption surface layer (902) and extend to the outer side of the adsorption surface layer.
10. The self-extending net type heavy metal contaminated soil remediation method according to claim 9, wherein: the adsorption surface layer (902) is made of porous adsorption material, and the magnetic adsorption ball (9) and the auxiliary repair mesh pipe (3) are in clearance fit.
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