CN113000593B - Polluted soil ex-situ remediation equipment and remediation process - Google Patents
Polluted soil ex-situ remediation equipment and remediation process Download PDFInfo
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- CN113000593B CN113000593B CN202110205479.2A CN202110205479A CN113000593B CN 113000593 B CN113000593 B CN 113000593B CN 202110205479 A CN202110205479 A CN 202110205479A CN 113000593 B CN113000593 B CN 113000593B
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- soil
- drying
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- metal ions
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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 contaminated 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 conveyer belt is arranged in the drying device; the electric repairing device is connected with the outlet end of the drying conveyer belt; the conveyor is connected with the electric repairing device through a discharging pipe; the chemical reaction device is internally provided with a spray pipe and a rotary cutting assembly. According to the contaminated soil ex-situ remediation equipment provided by the invention, the soil is dried by the drying device so as to control the water content in the soil, the follow-up electric remediation operation of the soil is facilitated, the electric remediation device forms the anode and the cathode, the directional migration of heavy metal ions is realized, the heavy metal ions are separated from the soil, the effective removal of the heavy metal ions is realized, the soil is finally conveyed to the reagent reaction device by the conveyor, the reagent is added into the soil to complete the removal of organic matters, the comprehensive remediation of the soil is finally achieved, and a good remediation effect is realized.
Description
Technical Field
The invention belongs to the technical field of soil remediation, and particularly relates to contaminated soil ex-situ remediation equipment and a remediation process.
Background
In the prior art, although various soil restoration techniques exist, various restoration techniques have respective advantages and own disadvantages. Especially in a lot of places that groundwater level is shallower, interweaving between soil and the groundwater leads to the moisture content in the soil higher, needs to administer soil simultaneously to have multiple pollutant pollution in addition, and current equipment and technology need shift the soil between multiple repair equipment such as stoving, mix, greatly reduced repair efficiency, and be difficult to effectual assurance repair quality.
Disclosure of Invention
The invention aims to provide a contaminated soil ex-situ remediation device and a remediation process, which are used for solving the technical problems of complicated working procedures, low remediation efficiency, poor remediation effect and the like of soil remediation and remediation in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a contaminated soil ectopic repair equipment, including drying device, electronic repair device, conveyer and medicament reaction unit, drying device's top is equipped with the feeder hopper, and drying device's inside is equipped with the stoving conveyer belt that is used for carrying soil; 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 conveyor is connected with the electric repairing device through a discharging pipe; 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.
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 made of metal components 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 is used for bearing soil, the inner cylinder is a graphite material member and is electrified to form an anode, sieve holes for heavy metal ions to pass through are formed in the peripheral wall of the inner cylinder, and the discharging pipe is connected to the bottom of the inner cylinder; the stirring subassembly sets up in the inner tube for stir soil.
As another embodiment of the application, the stirring assembly comprises a stirring shaft, a driving piece 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 upwards and outwards.
As another embodiment of the present application, the horizontal cross section of the stirring blade is arc-shaped, the extending direction of the stirring blade is opposite to the rotation of the stirring shaft to guide the soil to the outer periphery of the inner cylinder, and the stirring blade is inclined from bottom to top to one side deviating from the rotation direction of the stirring shaft to guide the soil upward.
As another embodiment of the application, the collecting tank for collecting heavy metal ions between the tank body and the inner cylinder is further arranged below the frame body, and a guide protrusion for guiding the heavy metal ions is arranged between two adjacent collecting tanks.
As another embodiment of the present application, a drug reaction device includes a case and a delivery auger; the box body is internally provided with a heat insulation interlayer, 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, the rotational atherectomy assembly includes a rotational atherectomy 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 the application, an outlet end of the drying device is provided with a hot air blower for blowing hot air to the upper side of the drying conveyor belt, and an inlet end of the drying device is provided with an exhaust fan for being positioned above the drying conveyor belt.
As another embodiment of the application, the spray pipe is arranged above the box body, a plurality of spray heads are arranged below the spray pipe, and the spray heads are close to the inlet end of the box body.
The contaminated soil ectopic repair device 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, so that the water content in the soil is controlled, the follow-up 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, the heavy metal ions are separated from the soil, the effective removal of the heavy metal ions is realized, the soil is finally conveyed to the reagent reaction device by the conveyor, the removal of organic matters is completed by adding the reagent into the soil, the comprehensive remediation of the soil is finally achieved, and the good remediation effect is realized.
The invention also provides a repair process of the contaminated soil ex-situ repair equipment, which comprises the following steps:
drying, namely conveying soil to a drying device for drying;
electrically repairing, namely conveying soil to an electrically repairing device to remove heavy metal ions in the soil;
and the reagent reacts, and the soil is conveyed to a reagent reaction device through a conveyor so as to add the reagent into the soil, so that the comprehensive restoration of the soil is completed.
According to the ectopic remediation process for the polluted soil, the soil is firstly dried to control the water content in the soil, then the electric remediation device is used for forming the anode and the cathode to realize directional migration of heavy metal ions, so that the heavy metal is separated from the soil, finally the soil is conveyed to the medicament reaction device, the removal of organic matters is realized by using the medicament, the comprehensive remediation of the soil is finally achieved, and a good remediation effect is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a partial cross-sectional front view of a contaminated soil ex-situ remediation apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the electro-dynamic 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 view of the bottom surface of the tank and the guide projection of FIG. 3 in cross section along the direction C;
fig. 5 is a schematic cross-sectional view of A-A of fig. 1.
Wherein, each reference sign in the figure:
1. a drying device; 11. a feed hopper; 12. drying the conveyer belt; 13. an air heater; 14. an exhaust fan; 2. an electric repair device; 21. a frame body; 22. a tank body; 24. an inner cylinder; 241. a sieve pore; 25. a collection tank; 251. a guide projection; 26. a discharge pipe; 261. a discharge valve; 3. a conveyor; 4. a drug reaction device; 41. a shower pipe; 42. a case; 43. conveying the auger; 44. a heat preservation interlayer; 5. a rotary cutting assembly; 51. a rotary cutting shaft; 52. slicing by rotating; 6. a stirring assembly; 61. a driving member; 62. a stirring shaft; 63. stirring vane.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the 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 for purposes of illustration only and are not intended to limit the scope of 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 is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to 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 the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a number" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 5, the contaminated soil ex-situ remediation device and the remediation process provided by the invention will now be described. The polluted 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 repairing device 2 through a discharging pipe 26; the top of the medicine reaction device 4 is provided with a spray pipe 41 for spraying medicine, and the inside of the medicine 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 is that the inner cylinder 24 and the tank 22 are respectively electrified to form an anode and a cathode so as to realize directional migration of heavy metal ions from the anode to the cathode, thereby separating heavy metal ion pollutants from soil.
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 so as to control the water content in the soil, the subsequent electric remediation operation of the soil is facilitated, the electric remediation device 2 forms the anode and the cathode to realize the directional migration of heavy metal ions, the heavy metal is separated from the soil, the effective removal of the heavy metal ions is realized, the soil is finally conveyed to the reagent reaction device 4 by the conveyor 3, the reagent is added into the soil to complete the removal of organic matters, the comprehensive remediation of the soil is finally achieved, and the good remediation effect is realized.
As a specific implementation of the embodiment of the present invention, referring to fig. 1 to 2, the electric repairing apparatus 2 includes a frame 21, a tank 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 made of metal and 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 bearing soil, the inner cylinder 24 is a graphite material member and is electrified to form an anode, sieve holes 241 for heavy metal ions to pass through are formed in the peripheral wall of the inner cylinder 24, the discharging pipe 26 is connected to the bottom of the inner cylinder 24, and a discharging valve 261 is arranged on the discharging pipe 26; the stirring assembly 6 is provided to the inner cylinder 24 for stirring the soil.
In this embodiment, the electric repairing device 2 uses the frame 21 to support the tank 22, the inner cylinder 24 is used for accommodating soil, and the soil diffuses to the periphery of the inner cylinder 24 under the stirring action of the stirring assembly 6. In addition, under the anode effect of the inner cylinder 24 made of graphite and the cathode effect of the tank 22 made of metal, heavy metal ions are directionally migrated from the anode to the cathode, and the heavy metal ions in the soil fall into gaps between the inner cylinder 24 and the tank 22 through the sieve holes 241 on the inner cylinder 24, so that the heavy metal ions are separated from the soil, and a good electric repairing effect is achieved.
The inner cylinder 24 is a cylindrical member made of graphite, and is provided with an open upper opening for facilitating the feeding of soil, and sieve holes 241 are formed in the peripheral wall of the inner cylinder 24 for allowing heavy metal ions to move into a gap between the inner cylinder 24 and the tank 22 in a directional manner, so that the effect of separating the heavy metal ions is achieved.
Further, 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, and after the soil in the inner cylinder 24 is separated for a certain time, the heavy metal ions in the inner cylinder 24 are effectively separated, at the moment, the discharge valve 261 is opened, and the soil in the inner cylinder 24 is discharged into the subsequent conveyor 3 to enter the next step.
As an 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 lower outer periphery 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 achieved. The stirring blade 63 can also drive the soil to disturb along the up-down direction, so that the deposition of the soil on the bottom of the inner cylinder 24 is avoided.
The driving piece 61 drives the stirring shaft 62 to rotate, and the stirring blades 63 at the periphery of the stirring shaft 62 have a certain radian, so that soil can be guided to the periphery of the inner cylinder 24, and heavy metal ions in the soil can move towards the periphery in a directional manner under the action of the anode and cathode until smoothly passing through the sieve holes 241 and moving to a position between the inner cylinder 24 and a gap of the inner wall of the tank body 22, thereby realizing effective electric repair of the heavy metal ions and achieving a good removal effect.
As a specific implementation of the embodiment of the present invention, referring to fig. 1 to 3, the horizontal section of the stirring blade 63 is arc-shaped, the extending direction of the stirring blade 63 is opposite to the rotation of the stirring shaft 62 to guide the soil to the outer circumference of the inner cylinder 24, and the stirring blade 63 is inclined from bottom to top to one side facing away from the rotation direction of the stirring shaft 62 to guide the soil upward.
In this embodiment, the stirring blade 63 guides the soil to the outer periphery of the inner tube 24, the horizontal cross section of the stirring blade 63 is arc-shaped, and the extending direction of the arc-shaped is opposite to the rotating direction of the stirring blade 63. When the stirring shaft 62 drives the stirring blade 63 to rotate, soil is conveyed to the periphery of the inner barrel 24 along the surface of the stirring blade 63, so that the soil is uniformly distributed to a position adjacent to the inner wall of the inner barrel 24, the directional migration of heavy metal ions is facilitated, the separation from the soil is realized, and the electric repair efficiency is improved.
Further, in order to avoid soil accumulation at the bottom of the tank 22, effective disturbance in the vertical direction of the soil is realized, and the stirring blade 63 is inclined to one side deviating from the rotation direction from top to bottom, so that the soil can be guided upwards, and heavy metal ions in the soil can be separated by fully utilizing the sieve holes 241 with larger area on the wall of the inner cylinder 24.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 4, a collection tank 25 for collecting heavy metal ions between the tank 22 and the inner cylinder 24 is further disposed below the frame 21, and a guide 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 subsequent heavy metal ions, a collection tank 25 is provided at the bottom of the frame 21. Heavy metal ions in the 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 a guide projection 251 extending along the circumferential direction, and the guide projection 251 has a downward inclination angle, so that heavy metal ions can be smoothly guided into the collecting tank 25, and rapid collection of the heavy metal ions is realized.
As a specific implementation of the embodiment of the present invention, referring to fig. 1 and 5, the medicine reaction device 4 includes a case 42 and a conveying auger 43; a heat insulation 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 disposed at the bottom of the casing 42, and is used for guiding soil to the outside of the casing 42.
In this embodiment, the heat-insulating interlayer 44 is disposed on the inner wall of the box 42, so that the soil maintains a certain temperature, a stable temperature is provided for the reaction between the chemical and the soil, the reaction between the soil and the chemical is more sufficient, and the restoration efficiency of the soil is improved. The rotary cutting assembly 5 can effectively cut soil, so that the problem that the soil is coagulated and agglomerated due to the 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 soil after the completion of the reaction to the outside of the box 42, and realizes effective guiding and conveying of the soil after the restoration, thereby having a stable conveying effect.
Referring to fig. 1 and 5 as an example of an implementation of the present invention, the rotational atherectomy device 5 includes a rotational atherectomy shaft 51 and a rotational atherectomy plate 52; the rotary-cut shaft 51 is provided in the case 42 in the horizontal direction; the rotary cutting pieces 52 are provided on the outer periphery of the rotary cutting shaft 51 for cutting and disturbing the soil, and the rotary cutting pieces 52 are provided at intervals in the axial direction of the rotary cutting shaft 51.
In this embodiment, the rotary-cut shaft 51 extends along the horizontal direction, and the rotary-cut pieces 52 are disposed on the outer periphery of the rotary-cut shaft 51, so that the soil can be effectively cut and disturbed, and the soil is fully contacted with the chemical agent, so that a good reaction effect is achieved, and organic matters can be effectively removed.
Further, the rotary cutting pieces 52 are arranged at intervals in the axial direction of the rotary cutting shaft 51, so that effective disturbance of soil at different positions in the box 42 can be realized, and the soil can be fully contacted with the medicament under the spraying action of the upper spraying pipe 41, so that the reaction efficiency is improved.
The rotary cutting members 5 are provided with two rotary cutting pieces 52 of the two rotary cutting members 5 alternately arranged in the axial direction of the rotary cutting shaft 51. The heights of the two rotary-cut components 5 are the same, and the two rotary-cut components 5 rotate in opposite directions, so that the soil at two sides of the inside of the box body 42 can be cut and guided to the center of the box body 42, the soil is fully sprayed by the medicament, and the effect of fully reacting is achieved by matching with the cutting action of the rotary-cut components 5 on the soil.
In the present embodiment, the rotary cutting pieces 52 on the same rotary cutting shaft 51 are alternately arranged on the shaft of the rotary cutting shaft 51. The rotary blades on the two rotary cutting shafts 51 are also staggered in the axial direction of the whole box 42, so that the box 42 can be effectively covered at different positions.
Further, the rotary cutting effect on the soil can be enhanced by the relative rotation of the two rotary cutting shafts 51, and the soil on both sides can be guided to the center position of the box 42, so that the contact area between the chemical and the soil can be further increased, and the reaction efficiency of the chemical can be improved.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1, an outlet end of the drying device 1 is provided with a hot air blower 13 for blowing hot air above the drying conveyer 12, and an inlet end of the drying device 1 is provided with an exhaust fan 14 for being located above the drying conveyer 12.
In this embodiment, the hot air blower 13 is used to supply hot air to the upper side of the drying conveyer belt 12, and the hot air can dry the soil above the drying conveyer belt 12, so as to reduce the moisture content in the soil. Meanwhile, the exhaust fan 14 is used for sucking the wind 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 conveniently ensured, and the soil separation efficiency is improved.
Further, the air heater 13 and the exhaust fan 14 are respectively arranged at the outlet end and the inlet end of the drying conveyer belt 12, and are opposite to the conveying direction of the soil, so that the contact area between the hot air and the soil is conveniently increased, and the drying efficiency is improved.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 and 5, a spray pipe 41 is disposed above the interior of a box 42, and a plurality of spray heads are disposed below the spray pipe 41, and the spray heads are disposed near the inlet end of the box 42.
In this embodiment, a plurality of shower nozzles have been set up to shower 41's below, and the shower nozzle is close to one side setting of the feed end of box 42, and the medicament of being convenient for fully sprays on the surface of soil, 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 repair process of the contaminated soil ex-situ repair equipment, which comprises the following steps:
drying, namely conveying soil to a drying device 1 for drying;
electrically repairing, namely conveying soil into an electrically repairing device 2 to remove heavy metal ions in the soil;
the chemical reaction is carried out, and the soil is conveyed to the chemical reaction device 4 through the conveyor 3 so as to add the chemical into the soil, thereby completing the comprehensive restoration of the soil.
According to the ectopic remediation process for the polluted soil, the polluted soil is firstly dried to control the water content in the soil, then the electric remediation device 2 is used for forming the anode and the cathode to realize directional migration of heavy metal ions, so that the heavy metal ions are separated from the soil, finally the soil is conveyed to the chemical reaction device 4, the removal of organic matters is realized by using the chemical, the comprehensive remediation of the soil is finally achieved, and a good remediation effect is realized.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. Contaminated soil ectopic repair equipment, characterized by comprising:
the drying device is provided with a feed hopper above, 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 to separate heavy metal ions in the soil;
the conveyor is connected with the electric repairing device through a discharging pipe; and
the top of the medicament reaction device is provided with a spray pipe for spraying medicaments, and a rotary cutting assembly is arranged in the medicament reaction device;
the electric prosthetic device includes:
the frame body is arranged at the outlet end of the drying device;
the tank body is arranged on the frame body, is made of metal members and is electrified to form a cathode, and a discharging opening below the outlet end of the drying conveyer belt is arranged at the top of the tank body; and
the inner cylinder is arranged in the tank body, the upper end of the inner cylinder is open and is used for bearing the soil, the inner cylinder is a graphite material member and is electrified to form an anode, sieve holes for the heavy metal ions to pass through are formed in the peripheral wall of the inner cylinder, and the discharging pipe is connected to the bottom of the inner cylinder;
the stirring assembly is arranged in the inner cylinder and is used for stirring soil;
the stirring assembly includes:
a stirring shaft extending in the up-down direction;
the driving piece is arranged at the upper end of the stirring shaft and used for driving the stirring shaft to rotate; and
the stirring blades are arranged on the periphery of the lower part of the stirring shaft and are used for guiding the soil outwards and upwards;
the horizontal cross section of stirring vane is the arc, stirring vane's extending direction with the rotation of (mixing) shaft is opposite in order to the periphery of inner tube is led the soil, stirring vane from bottom to top to deviating from the one side slope of the rotation direction of (mixing) shaft sets up in order to upwards lead to send the soil.
2. The contaminated soil ex-situ remediation apparatus according to claim 1, wherein a collection tank for collecting heavy metal ions between the tank and the inner cylinder is further provided below the frame, and a guide protrusion for guiding the heavy metal ions is provided between two adjacent collection tanks.
3. The contaminated soil ex-situ remediation apparatus of claim 1 or 2 wherein the agent reaction means comprises:
the box body is provided with a heat-insulating 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.
4. The contaminated soil ex-situ remediation apparatus of claim 3, wherein said rotational atherectomy assembly comprises:
the rotary cutting shaft is arranged in the box body along the horizontal direction; and
the rotary cutting pieces are arranged on the periphery of the rotary cutting shaft and used for cutting and disturbing the soil, and the rotary cutting pieces are arranged at intervals in the axial direction of the rotary cutting shaft.
5. The contaminated soil ex-situ remediation apparatus of claim 3 wherein said spray pipe is disposed above the interior of said housing and a plurality of spray heads are disposed below said spray pipe, said spray heads being disposed adjacent the inlet end of said housing.
6. The contaminated soil ex-situ remediation apparatus according to claim 1 or 2 wherein the outlet end of the drying means is provided with a hot air blower for blowing hot air over the drying conveyor, and the inlet end of the drying means is provided with an exhaust fan for being located over the drying conveyor.
7. A remediation process based on the contaminated soil ex-situ remediation apparatus of any one of claims 1 to 6, comprising the steps of:
drying, namely conveying soil to a drying device for drying;
electrically repairing, namely conveying the soil to an electrically repairing device to remove heavy metal ions in the soil;
and (3) carrying out medicament reaction, and conveying the soil to a medicament reaction device through a conveyor so as to add medicament into the soil and complete 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 |
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| Publication Number | Publication Date |
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| CN113000593A CN113000593A (en) | 2021-06-22 |
| CN113000593B true CN113000593B (en) | 2023-05-05 |
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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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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207288335U (en) * | 2017-05-17 | 2018-05-01 | 湖北加德科技股份有限公司 | System for soil heterotopic solidification and stabilization reparation |
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| CN210907378U (en) * | 2019-07-26 | 2020-07-03 | 南京大学环境规划设计研究院股份公司 | Heavy metal contaminated soil prosthetic devices |
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| CN207288335U (en) * | 2017-05-17 | 2018-05-01 | 湖北加德科技股份有限公司 | System for soil heterotopic solidification and stabilization reparation |
| CN110369466A (en) * | 2019-07-25 | 2019-10-25 | 南京大学环境规划设计研究院股份公司 | A kind of prosthetic device and its application method of heavy metal cupro-nickel composite pollution soil |
| CN210474966U (en) * | 2019-07-30 | 2020-05-08 | 河南天明环保科技有限公司 | Prevent blockking up heavy metal contaminated soil prosthetic devices |
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