CN113000593A - Contaminated soil ex-situ remediation equipment and remediation process - Google Patents
Contaminated soil ex-situ remediation equipment and remediation process Download PDFInfo
- Publication number
- CN113000593A CN113000593A CN202110205479.2A CN202110205479A CN113000593A CN 113000593 A CN113000593 A CN 113000593A CN 202110205479 A CN202110205479 A CN 202110205479A CN 113000593 A CN113000593 A CN 113000593A
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- Prior art keywords
- soil
- remediation
- drying
- rotary cutting
- stirring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
- F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides polluted soil ex-situ remediation equipment, which relates to the technical field of soil remediation and comprises a drying device, an electric remediation device, a conveyor and a medicament reaction device, wherein a drying conveying belt is arranged in the drying device; the electric repairing device is connected with the outlet end of the drying conveyer belt; the conveyer is connected with the electric repairing device through a discharge pipe; a spray pipe and a rotary cutting component are arranged in the medicament reaction device. According to the contaminated soil ex-situ remediation equipment provided by the invention, the soil is dried by the drying device to control the water content in the soil, so that the subsequent electric remediation operation of the soil is facilitated, the electric remediation device forms the anode and the cathode to realize the directional migration of heavy metal ions, so that the heavy metals are separated from the soil to realize the effective removal of the heavy metal ions, and finally, the soil is conveyed to the reagent reaction device by the conveyor to add the reagent into the soil to complete the removal of organic matters, so that the comprehensive remediation of the soil is finally realized, and a good remediation effect is realized.
Description
Technical Field
The invention belongs to the technical field of soil remediation, and particularly relates to polluted soil ex-situ remediation equipment and a remediation process.
Background
In the prior art, although various soil remediation technologies exist, the various remediation technologies have respective advantages and respective disadvantages. Especially in many places with shallow underground water levels, the mutual interweaving between soil and the groundwater leads to the moisture content in the soil to be higher, in addition need administer soil and have multiple pollutant pollution simultaneously, current equipment and technology need shift soil among multiple repair equipment such as stoving, mixture, have greatly reduced remediation efficiency, and are difficult to effectual assurance restoration quality.
Disclosure of Invention
The invention aims to provide contaminated soil ex-situ remediation equipment and a remediation process, and aims to solve the technical problems of complex soil remediation operation procedures, low remediation efficiency, poor remediation effect and the like in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the contaminated soil ex-situ remediation equipment comprises a drying device, an electric remediation device, a conveyor and a medicament reaction device, wherein a feed hopper is arranged above the drying device, and a drying conveyor belt for conveying soil is arranged inside the drying device; the electric repairing device is connected with the outlet end of the drying conveyer belt and can form an anode and a cathode to separate heavy metal ions in soil; the conveyer is connected with the electric repairing device through a discharge pipe; the top of the medicament reaction device is provided with a spray pipe for spraying the medicament, and the inside of the medicament reaction device is provided with a rotary cutting assembly.
As another embodiment of the application, the electric repairing device comprises a frame body, a tank body, an inner cylinder and a stirring assembly; the frame body is arranged at the outlet end of the drying device, the tank body is arranged on the frame body, the tank body is a metal component and is electrified to form a cathode, and the top of the tank body is provided with a feed opening positioned below the outlet end of the drying conveyer belt; the inner cylinder is arranged in the tank body, the upper end of the inner cylinder is open and used for receiving soil, the inner cylinder is a graphite component and is electrified to form an anode, the peripheral wall of the inner cylinder is provided with sieve pores for heavy metal ions to pass through, and the discharge pipe is connected to the bottom of the inner cylinder; the stirring assembly is arranged in the inner barrel and used for stirring soil.
As another embodiment of the application, the stirring assembly comprises a stirring shaft, a driving part and a plurality of stirring blades; the stirring shaft extends along the up-down direction; the driving piece is arranged at the upper end of the stirring shaft and is used for driving the stirring shaft to rotate; the stirring blades are arranged on the periphery of the lower part of the stirring shaft and used for guiding and conveying soil to the upper part of the outside.
As another embodiment of the present application, the horizontal section of the stirring vane is arc-shaped, the extension direction of the stirring vane is opposite to the rotation direction of the stirring shaft to guide the soil to the outer circumference of the inner cylinder, and the stirring vane is inclined from bottom to top to the side away from the rotation direction of the stirring shaft to guide the soil upward.
As another embodiment of this application, the below of support body still is equipped with the collecting vessel that is used for the heavy metal ion between the collecting vessel body and the inner tube, is equipped with the conduction arch that is used for leading heavy metal ion between two adjacent collecting vessels.
As another embodiment of the application, the medicament reaction device comprises a box body and a conveying auger; a heat-insulating interlayer is arranged in the box body, and the rotary cutting assembly is arranged in the box body; the conveying auger is arranged at the bottom of the box body and used for guiding soil to the outside of the box body.
As another embodiment of the present application, a rotational atherectomy assembly comprises a rotational cutting shaft and a rotational cutting blade; the rotary cutting shaft is arranged in the box body along the horizontal direction; the rotary cutting sheets are arranged on the periphery of the rotary cutting shaft and used for cutting and disturbing soil, and the rotary cutting sheets are arranged at intervals in the axial direction of the rotary cutting shaft.
As another embodiment of this application, drying device's exit end is equipped with and is used for to the hot-blast air heater of jetting above the stoving conveyer belt, and drying device's entrance point is equipped with and is used for lieing in the air exhauster of stoving conveyer belt top.
As another embodiment of this application, the shower set up in the inside top of box, and the below of shower is equipped with a plurality of shower nozzle, and the shower nozzle is close to the entrance point setting of box.
The polluted soil ex-situ remediation equipment provided by the invention has the beneficial effects that: compared with the prior art, the contaminated soil ex-situ remediation equipment provided by the invention has the advantages that the soil is dried by the drying device to control the water content in the soil, the subsequent electric remediation operation of the soil is facilitated, the electric remediation device forms the anode and the cathode to realize the directional migration of heavy metal ions, so that the heavy metals are separated from the soil, the effective removal of the heavy metal ions is realized, finally, the soil is conveyed to the medicament reaction device by the conveyor, the medicament is added into the soil to complete the removal of organic matters, the comprehensive remediation of the soil is finally realized, and the good remediation effect is realized.
The invention also provides a repairing process of the polluted soil ex-situ repairing equipment, which comprises the following steps:
drying, namely conveying the soil into a drying device for drying;
electrically repairing, namely conveying the soil into an electric repairing device to remove heavy metal ions in the soil;
and (4) carrying out medicament reaction, namely carrying the soil to a medicament reaction device through a conveyor to add a medicament into the soil and complete comprehensive restoration of the soil.
The contaminated soil ex-situ remediation process provided by the invention comprises the steps of drying soil to control the water content in the soil, forming an anode and a cathode by using an electric remediation device to realize the directional migration of heavy metal ions, separating heavy metals from the soil, conveying the soil to a medicament reaction device, and removing organic matters by using a medicament, so that the comprehensive remediation of the soil is finally realized, and a good remediation effect is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic partial sectional structural view of a contaminated soil ex-situ remediation device in a front view according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the powered prosthetic device of FIG. 1;
FIG. 3 is a schematic top cross-sectional view of B-B of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the bottom surface of the can body and the guide projection of FIG. 3 in the direction of C;
fig. 5 is a schematic sectional structure view of a-a in fig. 1.
Wherein, in the figures, the respective reference numerals:
1. a drying device; 11. a feed hopper; 12. drying the conveying belt; 13. a hot air blower; 14. an exhaust fan; 2. An electrically powered prosthetic device; 21. a frame body; 22. a tank body; 24. an inner barrel; 241. screening holes; 25. a collection tank; 251. a guide projection; 26. a discharge pipe; 261. a discharge valve; 3. a conveyor; 4. a reagent reaction device; 41. A shower pipe; 42. a box body; 43. conveying the auger; 44. a heat-insulating interlayer; 5. a rotary cutting assembly; 51. rotating and cutting the shaft; 52. rotationally slicing; 6. a stirring assembly; 61. a drive member; 62. a stirring shaft; 63. a stirring blade.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular operation, and are therefore not to be considered limiting. 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 number" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 5, the contaminated soil ex-situ remediation apparatus and the remediation process of the present invention will be described. Contaminated soil ex-situ remediation equipment comprises a drying device 1, an electric remediation device 2, a conveyor 3 and a medicament reaction device 4; a feed hopper 11 is arranged above the drying device 1, and a drying conveyer belt 12 for conveying soil is arranged inside the drying device 1; the electric repairing device 2 is connected with the outlet end of the drying conveyer belt 12 and can form an anode and a cathode to separate heavy metal ions in soil; the conveyor 3 is connected with the electric restoration device 2 through a discharge pipe 26; the top of the medicament reaction device 4 is provided with a spray pipe 41 for spraying medicament, and the inside of the medicament reaction device 4 is provided with a rotary cutting assembly 5.
In this embodiment, the electric repairing device 2 adopts an electric repairing technology, and the basic principle thereof is that the inner tube 24 and the tank body 22 are respectively electrified to form the anode and the cathode so as to realize the directional migration of heavy metal ions from the anode to the cathode, thereby separating heavy metal ion pollutants from soil, and the repairing process can not cause pollution to the soil itself, does not generate secondary pollution, and has the characteristics of high treatment efficiency, economy, practicality, simple operation and the like.
Compared with the prior art, the contaminated soil ex-situ remediation equipment provided by the invention has the advantages that the soil is dried by the drying device 1 to control the water content in the soil, so that the subsequent electric remediation operation of the soil is facilitated, the anode and the cathode formed by the electric remediation device 2 realize the directional migration of heavy metal ions, so that the heavy metals are separated from the soil, the effective removal of the heavy metal ions is realized, finally, the soil is conveyed to the medicament reaction device 4 by the conveyor 3, the medicament is added into the soil to complete the removal of organic matters, the comprehensive remediation of the soil is finally realized, and the good remediation effect is realized.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 2, the electric repairing apparatus 2 includes a frame body 21, a tank body 22, an inner cylinder 24, and a stirring assembly 6; the frame body 21 is arranged at the outlet end of the drying device 1, the tank body 22 is arranged on the frame body 21, the tank body 22 is a metal component and is electrified to form a cathode, and the top of the tank body 22 is provided with a feed opening positioned below the outlet end of the drying conveyer belt 12; the inner cylinder 24 is arranged in the tank body 22, the upper end of the inner cylinder 24 is open and is used for receiving soil, the inner cylinder 24 is a graphite component and is electrified to form an anode, the peripheral wall of the inner cylinder 24 is provided with a sieve hole 241 for heavy metal ions to pass through, the discharge pipe 26 is connected to the bottom of the inner cylinder 24, and the discharge pipe 26 is provided with a discharge valve 261; the stirring assembly 6 is arranged on the inner barrel 24 and is used for stirring soil.
In this embodiment, the electric repairing device 2 supports the tank 22 by using the frame body 21, the inner cylinder 24 is used for accommodating soil, and the soil is diffused to the periphery of the inner cylinder 24 under the stirring action of the stirring component 6. In addition, under the anode action of the inner cylinder 24 made of graphite and the cathode action of the tank 22 made of metal, heavy metal ions are generated and directionally migrate from the anode to the cathode, and the heavy metal ions in the soil fall into a gap between the inner cylinder 24 and the tank 22 through the sieve holes 241 on the inner cylinder 24 to be separated out from the soil, so that a good electric remediation effect is achieved.
The inner cylinder 24 is a cylindrical member made of graphite, the upper opening is open, soil can be conveniently supplied, and the peripheral wall of the inner cylinder 24 is provided with sieve holes 241 for the heavy metal ions to directionally move to the gap between the inner cylinder 24 and the tank body 22, so that the effect of separating the heavy metal ions is achieved.
Furthermore, a discharge valve 261 is provided on the discharge pipe 26 for controlling the flow of soil in the discharge pipe 26. In the separation process, the discharge valve 261 is in a closed state, no soil flows in the discharge pipe 26, after the soil in the inner barrel 24 is separated for a certain time, the heavy metal ions in the inner barrel 24 are effectively separated, at the moment, the discharge valve 261 is opened, the soil in the inner barrel 24 is discharged to the subsequent conveyor 3, and the soil enters the next process step.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 3, the stirring assembly 6 includes a stirring shaft 62, a driving member 61, and a plurality of stirring blades 63; the stirring shaft 62 extends in the up-down direction; the driving piece 61 is arranged at the upper end of the stirring shaft 62 and is used for driving the stirring shaft 62 to rotate; a plurality of stirring blades 63 are provided on the outer periphery of the lower portion of the stirring shaft 62 for guiding the soil upward and outward.
In this embodiment, the stirring assembly 6 is used for driving the soil in the inner cylinder 24 to generate disturbance, so that the soil is guided to the periphery of the inner cylinder 24, and a more comprehensive separation effect is realized. The stirring blades 63 can also drive the soil to be disturbed in the up-and-down direction, so that the deposition of the soil at the bottom of the inner barrel 24 is avoided.
The driving piece 61 drives the stirring shaft 62 to rotate, the stirring blades 63 at the periphery of the stirring shaft 62 have certain radian, and soil can be guided to the periphery of the inner cylinder 24, so that heavy metal ions in the soil can directionally move towards the periphery under the action of the cathode and the anode until the heavy metal ions smoothly pass through the sieve holes 241 and move to the gap between the inner cylinder 24 and the inner wall of the tank body 22, effective electric repair of the heavy metal ions is realized, and a good removal effect is achieved.
Referring to fig. 1 to 3, as a specific embodiment of the present invention, a horizontal cross section of the stirring blade 63 is arc-shaped, an extension direction of the stirring blade 63 is opposite to a rotation direction of the stirring shaft 62 to guide the soil to an outer circumference of the inner tube 24, and the stirring blade 63 is inclined from bottom to top to a side away from the rotation direction of the stirring shaft 62 to guide the soil upward.
In this embodiment, the stirring vanes 63 guide the soil to the outer periphery of the inner cylinder 24, and the horizontal cross section of the stirring vanes 63 is arc-shaped, and the extension direction of the arc is opposite to the rotation direction of the stirring vanes 63. When the stirring shaft 62 drives the stirring blades 63 to rotate, soil is conveyed to the periphery of the inner barrel 24 along the plate surface of the stirring blades 63, so that the soil is uniformly distributed to the position adjacent to the inner wall of the inner barrel 24, the heavy metal ions are conveniently directionally moved, the separation from the soil is realized, and the electric repair efficiency is improved.
Further, in order to avoid soil accumulation in the bottom of the tank body 22 and realize effective disturbance of soil in the vertical direction, the stirring blades 63 are inclined from top to bottom to the side departing from the rotating direction, and can upwards guide and convey the soil, so that the heavy metal ions in the soil can be separated by the sieve pores 241 with a large area on the wall of the inner cylinder 24.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, a collection tank 25 for collecting heavy metal ions between the tank body 22 and the inner cylinder 24 is further disposed below the frame body 21, and a guiding protrusion 251 for guiding heavy metal ions is disposed between two adjacent collection tanks 25.
In this embodiment, in order to facilitate the collection of the following heavy metal ions, a collection tank 25 is disposed at the bottom of the frame body 21. Heavy metal ions in a gap between the outer wall of the inner cylinder 24 and the inner wall of the tank body 22 can smoothly fall into the collecting tank 25 below after the inner cylinder 24 and the tank body 22 are powered off. Meanwhile, the periphery of the bottom surface of the tank body 22 is provided with the guide protrusion 251 extending along the circumferential direction, and the guide protrusion 251 has a downward inclination angle, so that the heavy metal ions can be smoothly guided into the collecting tank 25, and the heavy metal ions can be rapidly collected.
Referring to fig. 1 and 5, as a specific implementation manner of the embodiment of the present invention, the medicament reaction apparatus 4 includes a box 42 and a conveying auger 43; a heat-insulating interlayer 44 is arranged in the box body 42, and the rotary cutting assembly 5 is arranged in the box body 42; the conveying auger 43 is arranged at the bottom of the box body 42 and is used for guiding soil to the outside of the box body 42.
In this embodiment, the inner wall of the box body 42 is provided with the heat preservation interlayer 44, soil is kept at a certain temperature, and a stable temperature is provided for the reaction of the agent and the soil, so that the reaction of the soil and the agent is more sufficient, and the soil remediation efficiency is improved. The rotary cutting assembly 5 can effectively cut soil, the problem that the soil is coagulated into clusters due to contact of the medicament and the soil is avoided, the reaction efficiency between the medicament and the soil is improved, and the using effect of the medicament is improved. The conveying auger 43 conveys the reacted soil to the outside of the box body 42, so that the repaired soil is effectively guided and conveyed, and the conveying auger has a stable conveying effect.
Referring to fig. 1 and 5, as a specific implementation manner of the embodiment of the present invention, the rotary cutting assembly 5 includes a rotary cutting shaft 51 and a rotary cutting blade 52; the rotary cutting shaft 51 is arranged in the box body 42 along the horizontal direction; the rotary blades 52 are disposed on the outer circumference of the rotary shaft 51 for cutting and disturbing soil, and the rotary blades 52 are disposed at intervals in the axial direction of the rotary shaft 51.
In this embodiment, the rotary cutting shaft 51 extends along the horizontal direction, and the rotary cutting blades 52 are disposed on the periphery of the rotary cutting shaft 51, so as to effectively cut and disturb soil, so that the soil is fully contacted with the chemical, thereby achieving a good reaction effect, and effectively removing organic matters.
Furthermore, the rotary-cut pieces 52 are arranged at intervals in the axial direction of the rotary-cut shaft 51, so that effective disturbance of soil at different positions in the box body 42 can be realized, and under the spraying action of the upper spraying pipe 41, the soil can be fully contacted with the medicament, so that the reaction efficiency is improved.
The rotary cutting assembly 5 is provided with two rotary cutting blades 52 of the two rotary cutting assemblies 5 which are arranged in a staggered way in the axial direction of the rotary cutting shaft 51. The two rotary cutting assemblies 5 are the same in height, and the two rotary cutting assemblies 5 rotate oppositely, so that the soil on two sides inside the box body 42 can be cut and guided to the center of the box body 42, the soil is fully sprayed with the medicament, and the effect of full reaction is achieved by matching the cutting action of the rotary cutting assemblies 5 on the soil.
In this embodiment, the rotary-cut pieces 52 on the same rotary-cut shaft 51 are arranged alternately on the shaft of the rotary-cut shaft 51. The rotary cutting blades on the two rotary cutting shafts 51 are also in a staggered mode in the axial direction of the whole box body 42, so that the effective coverage of different positions of the box body 42 is realized.
Furthermore, the two rotary cutting shafts 51 rotate relatively to each other, so that the rotary cutting effect on the soil can be enhanced, the soil on both sides can be guided to the center of the box body 42, the contact area between the medicament and the soil is further increased, and the reaction efficiency of the medicament is improved.
Referring to fig. 1, as a specific implementation manner of the embodiment of the present invention, an outlet end of the drying device 1 is provided with a hot air blower 13 for blowing hot air above the drying conveyor belt 12, and an inlet end of the drying device 1 is provided with an exhaust blower 14 for being located above the drying conveyor belt 12.
In this embodiment, the hot air blower 13 supplies hot air to the upper side of the drying conveyor belt 12, and the hot air can dry the soil above the drying conveyor belt 12, thereby reducing the moisture content in the soil. Meanwhile, the exhaust fan 14 is used for sucking the air containing the humid gas to the outside, so that good quality guarantee is provided for subsequent separation operation, the separation effect of the electric repairing device 2 on heavy metal ions is convenient to guarantee, and the separation efficiency of the soil is improved.
Further, the hot air blower 13 and the exhaust blower 14 are respectively arranged at the outlet end and the inlet end of the drying conveyer belt 12, and the conveying direction of the hot air blower is opposite to that of the soil, so that the contact area between the hot air and the soil is conveniently increased, and the drying efficiency is improved.
Referring to fig. 1 and 5, as a specific implementation manner of the embodiment of the present invention, a shower 41 is disposed above the interior of a box 42, and a plurality of nozzles are disposed below the shower 41, and the nozzles are disposed near the inlet end of the box 42.
In this embodiment, a plurality of shower nozzle has been set up to the below of shower 41, and the shower nozzle is close to the one side setting of the feed end of box 42, and the medicament of being convenient for sprays the soil fully on the surface, through the further rotary-cut of rotary-cut subassembly 5 to soil, avoids the caking of soil, makes soil and medicament fully contact and react, is convenient for reach good reaction efficiency, reduces the loss volume of medicament, improves the availability factor of medicament.
The invention also provides a repairing process of the polluted soil ex-situ repairing equipment, which comprises the following steps:
drying, namely conveying the soil into a drying device 1 for drying;
electrically repairing, namely conveying the soil into an electric repairing device 2 to remove heavy metal ions in the soil;
and (4) carrying out medicament reaction, namely conveying the soil to a medicament reaction device 4 through a conveyor 3 so as to add a medicament into the soil and finish the comprehensive restoration of the soil.
The polluted soil ex-situ remediation process provided by the invention comprises the steps of drying polluted soil to control the water content in the soil, forming an anode and a cathode by using the electric remediation device 2 to realize the directional migration of heavy metal ions, separating heavy metals from the soil, conveying the soil to the medicament reaction device 4, removing organic matters by using a medicament, and finally achieving the comprehensive remediation of the soil and realizing a good remediation effect.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Contaminated soil dislocation repair equipment, its characterized in that includes:
a feed hopper is arranged above the drying device, and a drying conveyer belt for conveying soil is arranged inside the drying device;
the electric repairing device is connected with the outlet end of the drying conveyer belt and can form an anode and a cathode so as to separate heavy metal ions in the soil;
the conveyor is connected with the electric repairing device through a discharge pipe; and
the top of the medicament reaction device is provided with a spray pipe for spraying medicament, and the inside of the medicament reaction device is provided with a rotary cutting assembly.
2. The contaminated soil ex-situ remediation apparatus of claim 1, wherein said motorized remediation device comprises:
the frame body is arranged at the outlet end of the drying device;
the tank body is arranged on the frame body, is a metal component and is electrified to form a cathode, and the top of the tank body is provided with a feed opening positioned below the outlet end of the drying conveyer belt; and
the inner cylinder is arranged in the tank body, the upper end of the inner cylinder is open and is used for receiving the soil, the inner cylinder is a graphite component and is electrified to form an anode, sieve pores for the heavy metal ions to pass through are arranged on the peripheral wall of the inner cylinder, and the discharge pipe is connected to the bottom of the inner cylinder;
and the stirring assembly is arranged in the inner barrel and used for stirring soil.
3. An ex situ remediation apparatus for contaminated soil as claimed in claim 2 wherein said agitation assembly comprises:
a stirring shaft extending in the up-down direction;
the driving piece is arranged at the upper end of the stirring shaft and is used for driving the stirring shaft to rotate; and
and the stirring blades are arranged on the periphery of the lower part of the stirring shaft and used for guiding and conveying the soil to the upper part.
4. The contaminated soil ex-situ remediation apparatus as claimed in claim 3, wherein said stirring blade has an arc-shaped horizontal cross-section, an extension direction of said stirring blade is opposite to a rotation direction of said stirring shaft to guide said soil toward an outer periphery of said inner cylinder, and said stirring blade is disposed to be inclined from bottom to top toward a side away from the rotation direction of said stirring shaft to guide said soil upward.
5. An ex-situ contaminated soil remediation device according to claim 2 wherein a collection tank for collecting heavy metal ions between the tank body and the inner cylinder is further arranged below the frame body, and a guide projection for guiding the heavy metal ions is arranged between two adjacent collection tanks.
6. The contaminated soil ex-situ remediation apparatus of any one of claims 1 to 5, wherein the agent reaction device comprises:
the box body is provided with a heat-preservation interlayer, and the rotary cutting assembly is arranged in the box body; and
and the conveying auger is arranged at the bottom of the box body and used for guiding the soil to the outside of the box body.
7. The contaminated soil ex-situ remediation apparatus of claim 6 wherein said rotary cutting assembly comprises:
the rotary cutting shaft is arranged in the box body along the horizontal direction; and
and the rotary cutting piece is arranged at the periphery of the rotary cutting shaft and used for cutting and disturbing the soil, and the rotary cutting piece is arranged at intervals in the axial direction of the rotary cutting shaft.
8. The contaminated soil ex-situ remediation device of claim 6 wherein the spray pipe is disposed above the interior of the tank, and wherein a plurality of spray heads are disposed below the spray pipe, the spray heads being disposed proximate to the inlet end of the tank.
9. The polluted soil ex-situ remediation device as claimed in any one of claims 1 to 5, wherein an outlet end of the drying means is provided with a hot air blower for blowing hot air above the drying conveyor belt, and an inlet end of the drying means is provided with an exhaust blower for positioning above the drying conveyor belt.
10. A remediation process based on the contaminated soil ex-situ remediation device of any one of claims 1 to 9, comprising the steps of:
drying, namely conveying the soil into a drying device for drying;
electrokinetic remediation, conveying the soil into an electrokinetic remediation device to remove heavy metal ions from the soil;
and (3) carrying out medicament reaction, namely conveying the soil to a medicament reaction device through a conveyor so as to add a medicament into the soil and finish the comprehensive restoration of the soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110205479.2A CN113000593B (en) | 2021-02-24 | 2021-02-24 | Polluted soil ex-situ remediation equipment and remediation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110205479.2A CN113000593B (en) | 2021-02-24 | 2021-02-24 | Polluted soil ex-situ remediation equipment and remediation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113000593A true CN113000593A (en) | 2021-06-22 |
| CN113000593B CN113000593B (en) | 2023-05-05 |
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Family Applications (1)
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| CN202110205479.2A Active CN113000593B (en) | 2021-02-24 | 2021-02-24 | Polluted soil ex-situ remediation equipment and remediation process |
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