CN111906134A - Cadmium-lead combined pollution soil plant restoration device - Google Patents
Cadmium-lead combined pollution soil plant restoration device Download PDFInfo
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- CN111906134A CN111906134A CN202010803054.7A CN202010803054A CN111906134A CN 111906134 A CN111906134 A CN 111906134A CN 202010803054 A CN202010803054 A CN 202010803054A CN 111906134 A CN111906134 A CN 111906134A
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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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
- B01F27/2122—Hollow shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
- B01F27/906—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms with fixed axis
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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
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/48—Mixing water in water-taps with other ingredients, e.g. air, detergents or disinfectants
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- Environmental & Geological Engineering (AREA)
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a cadmium-lead composite polluted soil phytoremediation device which at least comprises a remediation frame body, an isolation net layer, a soil placing groove, a soil planting layer and a medicament storage groove, wherein the medicament storage groove is communicated with a medicament mixing and stirring device arranged outside the remediation frame body; adsorbing the medicament mixed liquid added in the medicament storage tank by the polluted soil contained in the soil placement tank from bottom to top; a root cutting device for cutting capillary roots growing downwards of the plants is arranged between the top of the soil placement groove and the isolation net layer; the root of plant grows downwards and can restore the contaminated soil from the top down that needs to restore, and the restoration medicament in the medicament hold up tank upwards permeates through the contaminated soil, and from the bottom up restores the contaminated soil, and effectual improvement soil restoration's efficiency, and the soil of upper and lower floor can both be by complete restoration simultaneously, avoids the upper strata to restore incomplete fault phenomenon appearance of lower floor's restoration completely.
Description
Technical Field
The invention relates to the field of heavy metal soil remediation, in particular to a cadmium-lead composite polluted soil plant remediation device.
Background
With the rapid development of urban economy, soil pollution is more and more serious, and soil resources which can be used for agriculture and forestry development are more and more deficient.
Heavy metals in polluted soil are difficult to degrade, a special device is not provided for restoration, even if a related restoration device is provided, the function is single, and the use is inconvenient.
In the current phytoremediation process of the method, some heavy metal soil remediation agents or bacteria liquid are added to assist phytoremediation during phytoremediation, but when the heavy metal soil remediation agent is added or the bacterial liquid is added, the surface layer of the planted plants is added, so that the upper layer of the remediated soil can be completely remediated, the lower part of the soil to be repaired has poor repairing effect, and meanwhile, the repaired plant can only repair the soil once in the repairing process, the repair can not be carried out for two or more times, when the repair is finished for one time, the plants can grow in the soil after the repair is finished, or removing the soil from the repaired soil, introducing all the soil in the whole repairing device into the planting field, carry out the soil restoration of new round, bring very big inconvenience for soil restoration, the plant of restoreing soil simultaneously can not carry out many times and restore and cause very big waste.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a cadmium-lead combined pollution soil plant repairing device which can repair the repaired soil from top to bottom and from bottom to top simultaneously, does not need to remove plants after the repair is finished, directly replaces the repaired soil, enables the plants to be repaired for many times and improves the plant repairing utilization rate.
In order to achieve the purpose, the invention adopts the following technical scheme that the cadmium-lead composite polluted soil plant restoration device at least comprises a restoration frame body, an isolation net layer arranged in the restoration frame body, a soil placing groove arranged in the restoration frame body and used for containing polluted soil, and a soil planting layer used for planting plants is paved on the upper portion of the isolation net layer;
the soil placing groove is positioned below the isolation net layer, a medicament storage groove is arranged below the soil placing groove, and the medicament storage groove is communicated with a medicament mixing and stirring device arranged outside the repairing frame body; the polluted soil contained in the soil placing groove adsorbs the medicament mixed liquid added in the medicament storage groove from bottom to top;
a root cutting device for cutting capillary roots growing downwards of plants is arranged between the top of the soil placement groove and the isolation net layer;
the root that the plant grows downwards restores the soil on upper portion in the soil standing groove, and the medicament through adsorbing in the medicament hold up tank of soil standing groove lower part restores, and after restoreing the completion, the root that grows downwards the plant through root cutting device cuts off, takes out the soil standing groove that the splendid attire pollutes soil from restoreing the framework, pours prosthetic soil in the soil restoration groove into, packs into the soil that needs the restoration, carries out the restoration of new round with soil restoration groove from newly packing into in the restoration framework.
A plurality of medicament adsorption tubes vertical to the bottom of the soil placement groove are arranged in the soil placement groove, and adsorption rods are arranged in the medicament adsorption tubes; the bottom of the medicament adsorption tube penetrates through the top of the soil placement groove and is communicated with the medicament storage groove, and a plurality of adsorption holes are formed in the medicament adsorption tube; the medicament in the medicament storage tank upwards adsorbs through adsorbing the stick, adsorbs the stick upwards with the medicament in the medicament storage tank and adsorbs by adsorbing the adsorbed medicament of stick through adsorbing the contaminated soil absorption in the downthehole soil standing groove of absorption.
The root cutting device comprises a cutting knife and a driving rod fixedly connected to one end of the repairing frame body through a bearing, pull wire winding wheels are fixed to two ends of the driving rod respectively, sliding grooves in two sides of the repairing frame body are penetrated through two ends of the cutting knife and extend outwards, the cutting knife and the pull wire winding wheels are fixedly connected through pull wires, and a driving wheel is fixedly arranged on one side of the driving rod.
The soil storage groove access ports are respectively arranged on two sides of the repairing frame body, the soil storage groove access ports arranged on two sides of the repairing frame body are connected through sliding rails, and the soil storage grooves are movably connected with the sliding rails.
One side of medicament hold up tank is equipped with the medicament and adds the mouth, and the tip of this medicament adds the mouth extends to and restores the frame and outer and pass through the medicament and add the pipeline intercommunication with medicament mixing stirring device, and this medicament adds and is equipped with the medicament force (forcing) pump on the pipeline.
Still include the filter-pressing and filter the jar, the export of medicament hold up tank and this compression filter jar intercommunication, the export of filter-pressing filter jar passes through the pipeline intercommunication with the medicament mixing stirring device.
The medicament mixing and stirring device comprises a stirring box body, a water inlet and a medicament outlet which are arranged on the stirring box body and communicated with the stirring box body, wherein the medicament outlet is communicated with a medicament storage tank through a pipeline;
a main pipeline perpendicular to the upper end face and the lower end face of the stirring box body is arranged in the stirring box body, the upper end face and the lower end face of the main pipeline are rotatably connected with the stirring box body, a plurality of stirring branch pipelines communicated with the main pipeline are arranged on the main pipeline from top to bottom, a plurality of air outlet holes are formed in the circumferential pushing faces of the stirring branch pipelines during rotation, a high-pressure inflator pump is arranged on the stirring box body, and the high-pressure inflator pump is movably connected with the end part, extending out of the stirring box body, of the main pipeline through a high-pressure air delivery pipe;
the stirring box body is fixedly provided with a dosing box, and the dosing box is communicated with the stirring box body through a dosing pipeline.
A plurality of stirring small transfer line from top to bottom become the heliciform and connect on the trunk line, and the contained angle between two adjacent stirring small transfer line is 30.
The root of the plant is wrapped by the root net bag, and the meshes of the root net bag only allow the capillary roots of the plant to penetrate through the root net bag.
The invention has the beneficial effects that: 1. the contaminated soil to be repaired can be repaired from top to bottom by the downward growth of the roots of the plants, the repairing agent in the agent storage tank permeates upwards through the contaminated soil and repairs the contaminated soil from bottom to top, the soil repairing efficiency is effectively improved, meanwhile, the soil of the upper layer and the soil of the lower layer can be completely repaired, and the fault phenomenon that the upper layer is completely repaired and the lower layer is incompletely repaired is avoided;
2. the root cutting device can cut the hair roots of the plants which enter the restored soil after the restoration is finished, the restored soil is taken out, the restored soil is put into the restored soil again, the plants with the hair roots cut off can restore the soil which is put into the lower part of the plants from the new hair roots which grow, the utilization rate of the plants is improved, the restoration device can be conveniently used for multiple times, and the restoration cost is reduced;
3. the arranged medicament pressurizing pump can ensure that the medicament in the medicament storage tank is always in an overflowing state, and the speed of adsorbing the medicament by the polluted soil is accelerated by pressurizing the medicament pressurizing pump;
4. the medicament mixing and stirring device drives the stirring branch pipe to rotate through ventilation to stir water and added medicaments, so that the stirring speed is improved, and simultaneously sent bubbles can drive liquid in the whole stirring box to vibrate, and cannot move along one direction, so that the stirring efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure inside the repair frame according to the present invention;
FIG. 3 is a schematic view of the installation structure of the root cutting device according to the present invention;
FIG. 4 is a schematic view of the structure of the mixing and stirring device for medicines in the present invention;
fig. 5 is a schematic top view of the connection between the main pipe and the stirring branch pipe in the device for mixing and stirring chemicals according to the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1
The cadmium-lead composite polluted soil phytoremediation device at least comprises a remediation frame 1, an isolation net layer 14 arranged in the remediation frame 1, a soil placement groove 2 arranged in the remediation frame 1 and used for containing polluted soil 4, and a soil planting layer 5 used for planting plants 7 laid on the upper portion of the isolation net layer 14; the isolation net layer 14 mainly separates a planting soil layer and contaminated soil 4 of a plant, the plant is planted through the planting soil layer 5, roots of the plant generated in the planting process penetrate through the isolation net layer 14 to enter the contaminated soil, the contaminated soil is repaired, meshes in the isolation net layer 14 can be changed according to the thickness of the roots of the plant, damage to the roots of the plant caused by the meshes of the isolation net layer 14 is avoided, meanwhile, the plants are conveniently transplanted, a root net bag 6 wraps the roots of the plant 7, the root net bag 6 covers the main roots of the plant and the soil of the main roots, and the survival rate of plant transplanting is improved; the meshes of the root net bag 6 only allow the capillary roots of the plants 7 to pass through. The plants are selected to repair the cadmium and lead pollution of the heavy metal, the specific plant types belong to the common knowledge in the technical field, and the plant varieties are not listed in detail;
the soil placing groove 2 is positioned below the isolation net layer 14, a medicament storage groove 8 is arranged below the soil placing groove 2, and the medicament storage groove 8 is communicated with a medicament mixing and stirring device 9 arranged outside the repairing frame body 1; the contaminated soil 4 contained in the soil placement groove 2 adsorbs the medicament mixed liquid added in the medicament storage groove 8 from bottom to top;
the medicament storage tank 8 is filled with medicament mixed liquid which is stirred by the medicament mixing and stirring device 9, the medicament mixed liquid enters the medicament storage tank 8 and is in an overflowing state, that is, the bottom of the soil placement groove 2 is completely immersed into the medicament in the medicament storage groove 8, so that the contaminated soil in the soil placement groove 2 can be adsorbed to the medicament in the medicament storage groove, and the contaminated soil has the characteristic of adsorbability, so that the medicament in the medicament storage groove can be adsorbed in the contaminated soil from bottom to top, the polluted soil at the lower layer of the polluted soil is repaired, the planted plants repair the polluted soil from top to bottom, in the whole restoration process, the plants are restored from top to bottom, and the restoration agent is used for restoring from bottom to top, so that the soil restoration efficiency is improved, meanwhile, the contaminated soil can be completely restored from top to bottom, and the soil restoration effect is ensured;
further, in order to guarantee that the remediation medicament can be quick adsorbed by contaminated soil, one side of the medicament storage tank 8 is provided with a medicament inlet 11, the end of the medicament inlet 11 extends to the outside of the remediation frame body 1 and is communicated with the medicament mixing and stirring device 9 through a medicament inlet pipeline, and the medicament inlet pipeline is provided with a medicament pressure pump 18, the medicament pressure pump 18 can pump the medicament in the medicament mixing and stirring device 9 into the medicament storage tank 8, so that the medicament in the medicament storage tank 8 can be in an overflowing state, and can pressurize the medicament storage tank 8, so that the medicament in the medicament storage tank 8 can be pressed into the contaminated soil, and the rate of adsorption of the medicament by the contaminated soil is improved.
A root cutting device 3 for cutting capillary roots growing downwards of the plants 7 is arranged between the top of the soil placing groove 2 and the isolation net layer 14;
when the root cutting device 3 finishes soil restoration, the root cutting device 3 cuts the planted plant roots along the lower part of the isolation net layer 14, so that the plants are separated from the soil after restoration, then the soil placing groove 2 is taken out of the restoration frame body 1, the soil after restoration is finished in the soil placing groove 2 or the soil after restoration is taken out of the soil placing groove 2, new contaminated soil is put into the restoration frame body from new loading, a new round of soil restoration is finished, and the utilization rate of the plants is improved.
Particularly, when in use, the device is mainly used in a soil remediation laboratory or a soil remediation factory, particularly, when in use, the soil placing groove is taken out of the remediation frame body and is filled with polluted soil, then the soil placing groove is placed in the repairing frame body, plants are planted in the planting soil layer 5, then adding a repairing agent into the agent storage tank 8, repairing the soil at the upper part in the soil placing tank 2 by the root of the plant 7 growing downwards, repairing the soil at the lower part of the soil placing tank 2 by adsorbing the agent in the agent storage tank 8, after the restoration is completed, the roots of the plants 7 growing downwards are cut off through the root cutting device 3, the soil placing groove 2 containing the contaminated soil 4 is taken out of the restoration frame body 1, the restored soil in the soil restoration groove 13 is poured out, the contaminated soil 4 needing to be restored is filled, and the soil restoration groove 13 is newly filled into the restoration frame body 1 to be restored for a new round.
Example 2
In addition to the example 1, in order to ensure that the contaminated soil can sufficiently adsorb the medicament in the medicament storage tank 8 and sufficiently react with the medicament to repair the soil, as shown in fig. 2, a plurality of medicament adsorption pipes 15 perpendicular to the bottom of the soil placement tank 2 are arranged in the soil placement tank 2, and adsorption rods 16 are arranged in the medicament adsorption pipes 15; the bottom of the medicament adsorption tube 15 penetrates through the top of the soil placement groove 2 to be communicated with the medicament storage groove 8, and a plurality of adsorption holes 17 are formed in the medicament adsorption tube 15; the medicament in the medicament storage tank 8 is upwards adsorbed through the adsorption rod 16, the adsorption rod 16 upwards adsorbs the medicament in the medicament storage tank 8, and the medicament adsorbed by the adsorption rod 16 is adsorbed through the contaminated soil 4 in the soil placement groove 2 in the adsorption hole 17.
When the operation is carried out, the medicament in the medicament storage tank 8 upwards adsorbs through adsorption rod 16, and the medicament that adsorbs on adsorption rod 16 outwards diffuses through the adsorption hole on the medicament adsorption tube 15, and the contaminated soil of medicament adsorbs, adsorbs the medicament through adsorption rod 16 and can accelerate the medicament adsorbed rate that makes progress, can guarantee simultaneously that the medicament can repair the higher level contaminated soil when restoreing, adsorption tube 15 is used for protecting adsorption rod 16, avoids using for a long time that adsorption rod 16 is hardened by contaminated soil, and adsorption rod 16 makes through adsorbing material, guarantees to adsorb that can be quick. Can guarantee through a plurality of adsorption tubes that are equipped with adsorb can be even to pollute the medicament in the soil and mix with polluting the soil, the whole soil horizon that pollutes can both carry out effectual restoration.
Example 3
On the basis of embodiment 1, in order to ensure that the root cutting device 3 can conveniently cut the plant roots after the repair, as shown in fig. 3, the root cutting device 3 includes a cutting knife 301 and a driving rod 302 fixedly connected to one end of the repair frame 1 through a bearing 307, two ends of the driving rod 302 are respectively fixed with a stay wire winding wheel 303, two ends of the cutting knife 301 respectively penetrate through sliding grooves on two sides of the repair frame 1 to extend outwards and are fixedly connected with the stay wire winding wheel 303 through a stay wire 304, and one side of the driving rod 302 is fixedly provided with a driving wheel 306. When the device is used, the driving rod 302 is rotated through rotating the driving wheel 306 to rotate, the driving rod 302 drives the stay wire winding wheel 303 to rotate, the stay wire winding wheel 303 pulls the cutting knife 301 to move through pulling the stay wire 304 in the rotating process, the roots of the planted plants are cut through the cutting knife 301, the plants after the polluted soil remediation are separated from the polluted soil on the lower layer, and preparation is made for the next soil remediation; after the cutting is completed, the cutting knife 301 is pulled to move in the opposite direction to reset the cutting knife.
Furthermore, in order to ensure that the soil placing groove 2 can be taken out from the repairing frame body 1 when being replaced, so as to facilitate the replacement of the contaminated soil and the repaired soil, soil placing groove inlets and outlets 12 are respectively arranged at two sides of the repairing frame body 1, the soil placing groove inlets and outlets 12 arranged at two sides of the repairing frame body 1 are connected through slide rails 13, and the soil placing groove 2 is movably connected with the slide rails 13.
Example 4
On embodiment 1's basis, in order to guarantee, after repairing, collect the utilization through the sewage that restores soil and leave, avoid causing the waste, still include filter-pressing filter tank 10, the export of medicament hold up tank 8 and this compression filter tank 10 intercommunication, filter-pressing filter tank 10's export and medicament mixing stirring device 9 pass through the pipeline intercommunication. The repaired sewage enters a filter pressing filter tank 10 to be filtered, the residual liquid can be fully filtered through filter pressing filtration, and the filtered liquid enters a medicament mixing and stirring device 9 to be mixed and stirred.
The medicine mixing and stirring apparatus 9 shown in fig. 4 and 5 includes a stirring case 901, a water inlet 902 and a medicine outlet 903 which are provided on the stirring case 901 and communicate with the stirring case 901, wherein the medicine outlet 903 is communicated with a medicine storage tank 8 through a pipeline; the medicament outlet 903 is used for discharging mixed medicament, and the water inlet 902 is used for introducing mixed water and liquid filtered by filter pressing.
A main pipeline 904 perpendicular to the upper end face and the lower end face of the stirring tank 901 is arranged in the stirring tank 901, the upper end face and the lower end face of the main pipeline 904 are rotatably connected with the stirring tank 901, a plurality of stirring branch pipelines 905 communicated with the main pipeline 904 are arranged on the main pipeline 904 from top to bottom, a plurality of air outlets 908 are arranged on the circumferential pushing face of the stirring branch pipelines 905 during rotation (the air outlets are positioned on the circumferential pushing face, namely, as shown in fig. 5, on the same side of the stirring branch pipelines and on the horizontal position in the middle of the stirring branch pipelines, so that the air sprayed out through the air outlets 908 can be sprayed backwards, and the stirring branch pipelines can be pushed to rotate), a high-pressure inflator pump 906 is arranged on the stirring tank 901, and the end part of the main pipeline 906 extending out of the stirring tank 901 is movably connected through a high-pressure air pipe; the lower end of the main pipeline 904 is sealed, the upper end and the lower end of the main pipeline 904 are movably connected with the center positions of the upper end and the lower end of the stirring box 901 through bearings, so that the main pipeline 904 can rotate in the stirring box along the central axis of the main pipeline, a plurality of stirring branch pipelines 905 are spirally connected to the main pipeline 904 from top to bottom, an included angle between every two adjacent stirring branch pipelines 905 is 30 degrees, two connected stirring branch pipelines 905 can continuously rotate in the stirring box 901, the resistance of liquid in the stirring box 901 to the stirring branch pipelines 905 is reduced, if the spiral continuous arrangement is not carried out, the spiral arrangement is only arranged on two sides, two surfaces can only simultaneously bear the resistance in one rotation period, the resistance is large, the spiral arrangement effectively solves the problem generated by the spiral arrangement, meanwhile, a water vortex can not be formed through spiral stirring, so that the stirring is more sufficient, in the stirring process of the embodiment, the mode of having avoided adopting the blade stirring stirs (although the range of blade stirring is great, but the power that needs is great), specifically at the in-process of stirring, ventilate in to the trunk line through high-pressure pump 906, the trachea of this high-pressure pump is passed through rotary joint with the trunk line top and is connected, avoid the trunk line to cause the interference to the trachea when rotating, fill into the high-pressure air in the trunk line and enter into stirring small transfer line 905, outwards jet-blast through the venthole, promote stirring small transfer line 905 and rotate, stirring small transfer line 905 is carrying out the pivoted in-process and is realizing the stirring, the gas of blowout venthole sprays all the time backward simultaneously, then upward movement, liquid in the gaseous motion's in-process drives the agitator tank body moves and realizes the secondary stirring, less the required power of stirring, the effect of stirring has still been improved simultaneously.
A dosing box 907 is fixedly arranged on the stirring box 901, and the dosing box 907 is communicated with the stirring box 901 through a dosing pipeline. The agent box 907 is filled with an agent for soil remediation, and when stirring and mixing are required, the agent is put into the stirring box through the agent pipeline and stirred.
The above embodiments are merely illustrative of the present invention, and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (9)
1. The cadmium-lead composite polluted soil phytoremediation device is characterized by at least comprising a remediation frame body (1), an isolation net layer (14) arranged in the remediation frame body (1), a soil placing groove (2) arranged in the remediation frame body (1) and used for containing polluted soil (4), and a soil planting layer (5) used for planting plants (7) is laid on the upper portion of the isolation net layer (14);
the soil placement groove (2) is positioned below the isolation net layer (14), a medicament storage groove (8) is arranged below the soil placement groove (2), and the medicament storage groove (8) is communicated with a medicament mixing and stirring device (9) arranged outside the restoration frame body (1); the polluted soil (4) contained in the soil placing groove (2) adsorbs the medicament mixed liquid added in the medicament storage groove (8) from bottom to top;
a root cutting device (3) for cutting capillary roots growing downwards of the plants (7) is arranged between the top of the soil placing groove (2) and the isolation net layer (14);
the soil of plant (7) downward growth upper portion in to soil standing groove (2) is restoreed, the soil of soil standing groove (2) lower part is restoreed through the medicament in absorption medicament hold up tank (8), after the restoration is accomplished, the root that grows downwards plant (7) is cut off through root cutting device (3), soil standing groove (2) that pollute soil (4) with the splendid attire take out from restoreing framework (1), pour out prosthetic soil in soil restoration groove (13), pack into needs prosthetic contaminated soil (4), carry out the restoration of new round in repairing framework (1) with soil restoration groove (13) from newly packing into.
2. The device for repairing plants in cadmium-lead combined contaminated soil according to claim 1, wherein a plurality of chemical adsorption tubes (15) are arranged in the soil placement groove (2) and are perpendicular to the bottom of the soil placement groove (2), and adsorption rods (16) are arranged in the chemical adsorption tubes (15); the bottom of the medicament adsorption tube (15) penetrates through the top of the soil placement groove (2) to be communicated with the medicament storage groove (8), and a plurality of adsorption holes (17) are formed in the medicament adsorption tube (15); the medicament in the medicament storage tank (8) is upwards adsorbed through the adsorption rod (16), the adsorption rod (16) upwards adsorbs the medicament in the medicament storage tank (8), and the medicament adsorbed by the adsorption rod (16) is adsorbed through the polluted soil (4) in the soil placement groove (2) in the adsorption hole (17).
3. The plant restoration device for cadmium-lead composite polluted soil according to claim 1, wherein the root cutting device (3) comprises a cutting knife (301) and a driving rod (302) fixedly connected to one end of the restoration frame body (1) through a bearing (307), two ends of the driving rod (302) are respectively fixed with a stay wire winding wheel (303), two ends of the cutting knife (301) respectively penetrate through sliding grooves on two sides of the restoration frame body (1) to extend outwards and are fixedly connected with the stay wire winding wheel (303) through a stay wire (304), and one side of the driving rod (302) is fixedly provided with a driving wheel (306).
4. The device for phytoremediation of cadmium-lead composite contaminated soil according to claim 1, wherein the soil placement groove access opening (12) is provided on each side of the remediation frame (1), the soil placement groove access openings (12) provided on each side of the remediation frame (1) are connected by a sliding rail (13), and the soil placement groove (2) is movably connected to the sliding rail (13).
5. The device for phytoremediation of cadmium-lead composite contaminated soil according to claim 1, wherein the chemical inlet (11) is formed in one side of the chemical storage tank (8), an end of the chemical inlet (11) extends out of the remediation frame (1) to communicate with the chemical mixing and stirring device (9) through a chemical inlet pipe, and a chemical pressure pump (18) is disposed on the chemical inlet pipe.
6. The cadmium-lead composite polluted soil phytoremediation device of claim 1, further comprising a filter-press filtration tank (10), wherein an outlet of the chemical storage tank (8) is communicated with the compression filtration tank (10), and an outlet of the filter-press filtration tank (10) is communicated with the chemical mixing and stirring device (9) through a pipeline.
7. The device for phytoremediation of cadmium-lead composite contaminated soil according to claim 1, wherein the reagent mixing and stirring device (9) comprises a stirring tank (901), a water inlet (902) and a reagent outlet (903), wherein the water inlet (902) and the reagent outlet (903) are arranged on the stirring tank (901) and are communicated with the stirring tank (901), and the reagent outlet (903) is communicated with the reagent storage tank (8) through a pipeline;
a main pipeline (904) perpendicular to the upper end face and the lower end face of the stirring box body (901) is arranged in the stirring box body (901), the upper end and the lower end of the main pipeline (904) are rotatably connected with the stirring box body (901), a plurality of stirring branch pipelines (905) communicated with the main pipeline (904) are arranged on the main pipeline (904) from top to bottom, a plurality of air outlet holes (908) are formed in the circumferential pushing surface of the plurality of stirring branch pipelines (905) during rotation, a high-pressure inflator pump (906) is arranged on the stirring box body (901), and the high-pressure inflator pump (906) is movably connected with the end portion, extending out of the stirring box body (901), of the main pipeline (904) through a high-pressure air conveying pipe;
a dosing box (907) is fixedly arranged on the stirring box body (901), and the dosing box (907) is communicated with the stirring box body (901) through a dosing pipeline.
8. The device for phytoremediation of cadmium-lead composite contaminated soil according to claim 7, wherein the plurality of stirring branch pipes (905) are spirally connected to the main pipe (904) from top to bottom, and an included angle between two adjacent stirring branch pipes (905) is 30 °.
9. The cadmium-lead composite polluted soil plant restoration device according to claim 1, wherein the root of the plant (7) is wrapped by the root net bag (6), and the meshes of the root net bag (6) only allow the capillary root of the plant (7) to penetrate through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113369298A (en) * | 2021-06-01 | 2021-09-10 | 苏州工业园区园林绿化工程有限公司 | Plant planting device for soil remediation |
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