CN109454108B - Microbial remediation equipment for heavy metal contaminated soil and remediation method thereof - Google Patents
Microbial remediation equipment for heavy metal contaminated soil and remediation method thereof Download PDFInfo
- Publication number
- CN109454108B CN109454108B CN201811432875.3A CN201811432875A CN109454108B CN 109454108 B CN109454108 B CN 109454108B CN 201811432875 A CN201811432875 A CN 201811432875A CN 109454108 B CN109454108 B CN 109454108B
- Authority
- CN
- China
- Prior art keywords
- soil
- feeding
- remediation
- soil particles
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002689 soil Substances 0.000 title claims abstract description 214
- 238000005067 remediation Methods 0.000 title claims abstract description 77
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 25
- 230000000813 microbial effect Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 101
- 239000002245 particle Substances 0.000 claims abstract description 92
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 39
- 239000000243 solution Substances 0.000 claims description 24
- 239000001963 growth medium Substances 0.000 claims description 21
- 244000005700 microbiome Species 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 13
- 238000009629 microbiological culture Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 239000003516 soil conditioner Substances 0.000 claims description 4
- 238000003971 tillage Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 235000015097 nutrients Nutrition 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000013329 compounding Methods 0.000 description 13
- 239000008187 granular material Substances 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 235000015099 wheat brans Nutrition 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a microbial remediation device for heavy metal contaminated soil, which comprises a traction device and a soil remediation device arranged behind the traction device, wherein the soil remediation device comprises a rack, and a feeding and conveying mechanism, a first remediation agent adding assembly, a mixing mechanism and a second remediation agent adding assembly which are arranged on the rack; the soil particles on ground are collected by the feeding conveying mechanism, the mixing mechanism is arranged at the discharge end of the feeding conveying mechanism, the mixing mechanism is arranged at the rear of the feeding conveying mechanism, a first repairing agent adding assembly adds a first repairing agent material into the mixing mechanism, a second repairing agent adding assembly is arranged at the discharge end of the mixing mechanism, and a second repairing agent solution is sprayed into a soil mixture after the second repairing agent adding assembly is exported to the mixing mechanism. Can greatly reduce the period duration of soil remediation and fully mix the microbial feed and soil particles.
Description
Technical Field
The invention belongs to the field of soil remediation, and particularly relates to a microbial remediation device for heavy metal contaminated soil and a remediation method thereof.
Background
Along with the development of society, the pollution and the damage of soil become more serious, the soil needs to be continuously repaired, therefore, the soil can be reused, the existing soil remediation methods are more, the methods are generally physical remediation, microbial remediation and the like, microbes have good protection performance in the remediation process, the soil can be directly remediated and the soil after remediation can be protected in the remediation process, the existing microbial remediation device generally directly sprays microbial materials to the soil, the microbes are not easy to be sent into the soil, the mixing of the microbes and the soil is not uniform, the soil remediation unevenness is caused, the growth of the microbes is also easily limited, the soil recovery speed is influenced, in addition, in the existing microorganism repairing device, multiple procedures such as soil crushing, spraying and the like are required to be independently carried out for multiple times, and the time-consuming period is long.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the microbial remediation equipment for the heavy metal contaminated soil and the remediation method thereof, which can greatly reduce the period duration of soil remediation and fully mix microbial materials and soil particles.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
the microbial remediation equipment for the heavy metal contaminated soil comprises a traction device and a soil remediation device arranged behind the traction device, wherein the soil remediation device is displaced on the soil to be remediated; the soil remediation device comprises a rack, and a feeding and conveying mechanism, a first remediation agent adding assembly, a mixing mechanism and a second remediation agent adding assembly which are arranged on the rack; the frame is connected and is set up the rear at draw gear, the soil particles on ground is collected to feeding conveyor, compounding mechanism sets up the discharge end at feeding conveyor, just compounding mechanism sets up the rear at feeding conveyor, first repairing agent adds the subassembly and adds first repairing agent material to compounding mechanism in, the second repairing agent adds the subassembly and sets up the discharge end at compounding mechanism, the second repairing agent adds the subassembly and sprays the second repairing agent solution in the soil mixture after the export of compounding mechanism.
Furthermore, the feeding conveying mechanism comprises a conveyor and feeding shovels arranged on the conveyor, the conveyor is a belt conveyor, the feeding shovels are sequentially arranged along the profile of a rotating belt of the conveyor at intervals, the conveyor is arranged from front to back in an inclined mode from a feeding end to a discharging end, the feeding end of the conveyor extends into the ground, and the discharging end of the conveyor is located above the mixing mechanism; the feeding shovel shovels soil particles on the ground and below the ground and continuously conveys the soil particles to the mixing mechanism through the feeding conveying mechanism.
Further, the feeding shovel is the L type plate body of bending, the length direction of feeding shovel sets up along the width direction of conveyer, the feeding shovel includes integrated into one piece's spiller portion and native portion, spiller portion connects on the rotation area of conveyer through the portion that gathers soil, spiller portion interval and the rotation area that is on a parallel with the conveyer, spiller portion is located the front side of the portion that gathers soil on the direction of transmission.
Furthermore, the mixing mechanism comprises a mixing box, a stirring mechanism and an eccentric cam, the mixing box is of a box structure with an opening facing, the stirring mechanism is transversely and rotatably arranged inside the mixing box, the two ends of a rotating shaft of the stirring mechanism are respectively and fixedly provided with the eccentric cam, the eccentric cam is rotatably arranged on the side wall of the mixing box, and the stirring mechanism eccentrically rotates through the eccentric cam; the rotating shaft of the stirring mechanism is perpendicular to the advancing direction of the soil remediation device, and the bottom of the mixing box is provided with a semi-open discharge port.
Further, the discharge gate internal rotation is provided with the swing board, the articulated drill way edge that sets up at the discharge gate of an edge of swing board, the axis of rotation of swing board is on a parallel with rabbling mechanism's axis of rotation, just the swing board is provided with articulated piece for the opposite side of axis of rotation, articulated piece sets up with the one end of connecting rod is articulated, the other end movable sleeve of connecting rod is established in the axis of rotation, the swing board sets up in the discharge gate along with the eccentric rotation of rabbling mechanism and luffing motion is opened and shut.
Furthermore, the bottom of the mixing box comprises a fixed plate, the fixed plate and the swinging plate are arranged oppositely, and the fixed plate and the swinging plate enable the bottom of the mixing box to form an open or closed structure; one side wall of the fixed plate opposite to the swinging plate comprises a serrated tooth mouth structure, the tooth mouth structure extends along the length direction of the rotating shaft, and the two tooth mouth structures are staggered and staggered; the two tooth mouth structures break soil particles through the swinging opening and closing of the swinging plate.
Furthermore, the stirring mechanism comprises stirring impellers and dividing lines, the stirring impellers are arranged at intervals along the axial direction of the rotating shaft, the dividing lines sequentially penetrate through blades of the stirring impellers along the direction of the rotating shaft, the dividing lines are parallel to the rotating shaft, and the dividing lines are respectively arranged at intervals along the length direction of the blades.
Further, the second repairing agent component comprises a liquid storage tank, a partition plate and a pressurizing water pump, wherein the partition plate and the pressurizing water pump are arranged in an inner cavity of the liquid storage tank, the liquid storage tank is of a closed box body structure comprising an inner cavity, the liquid storage tank is divided into a liquid collecting cavity and a pressurizing cavity through the partition plate, a through hole is formed in the partition plate, the liquid collecting cavity is communicated with the pressurizing cavity through the through hole, the pressurizing water pump is arranged in the liquid collecting cavity, and a liquid outlet of the pressurizing water pump is connected with the through hole; the device is characterized in that a plurality of liquid outlet micropores are formed in one side wall, opposite to the partition plate, of the pressurizing cavity, are arranged at intervals in the advancing direction perpendicular to the soil remediation device, are positioned below a discharge port of the mixing box, are positioned on the front side of the discharge port in the advancing direction of the soil remediation device, and are used for spraying a second remediation agent solution to soil particles sprayed downwards from the discharge port by the second remediation agent component.
Further, the first repairing agent material is a microorganism culture medium, and the second repairing agent solution is an aqueous solution or a microorganism growth agent nutrient solution.
A microbial remediation method of heavy metal contaminated soil comprises the following steps: the method comprises the following steps:
s1: carrying out rotary tillage on the land polluted by heavy metal through a rotary cultivator, and smashing the soil for multiple times through a plow harrow to form soil particles;
s2: adding a soil conditioner into the soil particles, turning over, watering and standing for 3-5 days; after the soil is over, soil is ploughed again;
s3: restoring the polluted soil which is previously ploughed and pretreated by the soil restoration device:
firstly, a traction device is used for dragging a soil remediation device to advance above heavy metal contaminated soil, a feeding end of a feeding conveying mechanism extends into the ground, soil particles are conveyed to a discharging end of the conveyor through the operation of the conveyor and a circularly rotating feeding shovel, the soil at the discharging end is conveyed to a mixing mechanism below, the soil particles are turned and crushed in the mixing mechanism, meanwhile, a first remediation agent adding assembly is used for adding a microbial culture medium into the mixing mechanism, and the microbial culture medium and the soil particles are mixed under the action of a stirring mechanism;
the eccentric cams are rotationally arranged on the wall body of the mixing box in a driving mode through a motor, a rotating shaft of the stirring mechanism forms deflection rotation relative to the mixing box through the two eccentric cams, when the stirring impeller rotates to turn over soil, the turning range is wider due to the action of eccentric motion, soil particles in the mixing box are vibrated, a soil particle lifting state is formed when the rotating blades rotate to the upper surface of the soil particles, the mixing degree of the soil particles and a microorganism culture medium is increased, and the integral eccentric rotation of the stirring impeller forms an impact force which can further break large soil particles;
thirdly, a plurality of dividing lines on the stirring blade divide larger soil particles in the rotating process of the rotating shaft, so that the crushing degree of the soil is further increased;
in the process of eccentric rotation of the rotating shaft, the connecting rod moves eccentrically along with the rotating shaft and drives the swinging plate to move around the hinged end of the swinging plate to open and close, when the swinging plate and the fixed plate are in a coplanar state, the discharge port is in a closed state, soil particles are turned and crushed in the mixing box and mixed with the microbial culture medium, and when the swinging plate is in a staggered state, the discharge port is in an open state, and the soil particles flow out downwards from the discharge port; in the process of relative movement of the swinging plate and the fixed plate, the soil particles discharged from the discharge hole are crushed again through the tooth mouth structure;
pressurizing the pressurizing cavity by a pressurizing water pump in the liquid storage tank to spray the solution in the pressurizing cavity from the liquid outlet micropores in a spraying state, mixing the sprayed solution with the soil particles at the discharge port, absorbing the mixture by the soil particles, and then dropping the soil particles to the ground;
s4: periodically spraying an aqueous solution or a low-concentration microorganism solution to the soil particles after the remediation treatment.
Has the advantages that: according to the invention, the feeding and conveying mechanism, the mixing mechanism and the microorganism culture medium of the soil are comprehensively arranged on the same equipment, and the soil particles on the ground are gradually transported, added with the repairing agent, fully mixed and then returned to the ground in situ continuously in advance, so that the in-situ repairing of the soil is realized, the cycle time of each process is greatly reduced, the soil particles are fully crushed, and the soil repairing agent and the soil particles are fully mixed, thereby being beneficial to the growth of microorganisms.
Drawings
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a perspective view of a front view of the overall structure of the present invention;
FIG. 3 is a schematic perspective view of the overall construction of the soil remediation device of the present invention;
FIG. 4 is a top view of the first remediation agent addition assembly, the compounding mechanism, and the second remediation agent addition assembly of the present invention;
FIG. 5 is a sectional view taken along line A-A of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic perspective view of another aspect of the mixing mechanism of the present invention;
FIG. 7 is an enlarged view of the structure of the connecting rod, the rotating shaft and the eccentric wheel of the present invention;
fig. 8 is a bottom schematic perspective view of the mixing mechanism and second remediation agent addition assembly of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in the attached drawings 1 and 2, the microorganism remediation equipment for the heavy metal contaminated soil comprises a traction device 1 and a soil remediation device arranged behind the traction device 1, wherein the soil remediation device is displaced on the soil to be remediated, and the traction device 1 can be power equipment such as a rotary cultivator and the like and provides power for the forward movement of the soil remediation device; the soil remediation device comprises a rack 2, and a feeding and conveying mechanism 3, a first remediation agent adding component 4, a mixing mechanism 5 and a second remediation agent adding component 6 which are arranged on the rack 2, wherein wheels for walking are arranged at the bottom of the rack 2; the frame 2 is connected and set up at draw gear 1's rear, feeding conveyor 3 collects the soil particle of transporting ground, compounding mechanism 5 sets up the discharge end at feeding conveyor 3, just compounding mechanism 5 sets up the rear at feeding conveyor 3, and feeding conveyor 3 transports the loose, refined soil particle that ground was ploughed in to compounding mechanism 5 in, first repairing agent adds subassembly 4 and is located compounding mechanism 5's top and adds first repairing agent material to compounding mechanism 5, second repairing agent adds subassembly 6 and sets up the discharge end at compounding mechanism 5, second repairing agent adds subassembly 6 and sprays the second repairing agent solution in the soil mixture after to compounding mechanism 5 export. First repairing agent material is the microbial culture medium, can select to use fungus mushroom class microbial culture medium, or can convert the microbial degradation fungus crowd of heavy metal characteristic, absorbs the heavy metal in the soil through the growth of bacterial colony, second repairing agent solution is aqueous solution or microorganism growth agent nutrient solution, increases the humidity of soil through aqueous solution, easily during the culture medium mixes into soil particle simultaneously, does benefit to the growth of microorganism. The feeding and conveying mechanism, the mixing mechanism and the microorganism culture medium of the soil are comprehensively arranged on the same equipment, and the soil particles on the ground are gradually transported, added with the repairing agent, fully mixed and then returned to the ground in situ continuously in a forward mode, so that the in-situ repairing of the soil is realized, the cycle time of each process is greatly shortened, the soil particles are fully crushed, and the soil repairing agent and the soil particles are fully mixed.
As shown in fig. 2, the feeding and conveying mechanism 3 includes a conveyor 31 and feeding shovels 32 arranged on the conveyor 31, the conveyor 31 is a crawler-type conveyor, a plurality of the feeding shovels 32 are sequentially arranged at intervals along the profile of a rotating belt of the conveyor 31, the conveyor 3 is arranged from the feeding end to the discharging end in an inclined manner from front to back, the feeding end of the conveyor 3 extends into the ground, soil particles below the ground are operated by the feeding shovels 32, and the discharging end of the conveyor 3 is located above the mixing mechanism 5; the feeding shovel 32 shovels soil particles on the ground and below the ground and continuously conveys the soil particles to the mixing mechanism 5 through the feeding conveying mechanism 3. Feeding shovel 32 is the L type plate body of bending, feeding shovel 32's length direction sets up along conveyer 31's width direction, feeding shovel 32 includes integrated into one piece's shovel sword portion 33 and soil portion 34, shovel sword portion 33 is connected on conveyer 3's rotation area through soil portion 34 that gathers, shovel sword portion 33 interval and the rotation area that is on a parallel with the conveyer, shovel sword portion 33 is located the front side of soil portion 34 that gathers on the direction of drive, and shovel sword portion 33 shovels the soil particle that moves the bottom surface and concentrates through soil portion 34 that gathers, prevents that soil from falling, and feeding shovel also forms a container that is used for storing soil particle temporarily, makes soil particle transport along direction of drive.
As shown in fig. 3 to 5, the mixing mechanism 5 includes a mixing box 50, a stirring mechanism 52 and an eccentric cam 56, the mixing box 50 is a box structure with an opening facing to the inside, the stirring mechanism 52 is transversely and rotatably disposed inside the mixing box 50, the eccentric cam 56 is fixedly disposed at each of two ends of a rotating shaft of the stirring mechanism 52, the eccentric cam 56 is rotatably disposed on a side wall of the mixing box 50, and the stirring mechanism 52 is eccentrically rotated by the eccentric cam 56; the rotating shaft 51 of the stirring mechanism 52 is perpendicular to the advancing direction of the soil remediation device, and the bottom of the mixing box 50 is provided with a semi-open discharge port 500. The driving motor shaft sets up the eccentric department at eccentric cam, eccentric cam's eccentricity should not be too big, below 10cm can, eccentric cam 56 makes axis of rotation 51 and motor shaft have certain eccentricity, when rabbling mechanism rotates, can produce vibrations and the impact of certain range, stirring vane 52 rotates when overturning soil, the scope that the effect of eccentric motion can make the upset is bigger, and make the soil granule in mixing box 50 form vibrations, and form the state that the soil granule was raised when rotating vane rotates to the upper surface of soil granule, increase the degree that soil granule and microbiological culture medium mix, and stirring vane 52 holistic eccentric rotation forms the massive soil granule that the impact force can further be broken, and still do benefit to mixing box 50 in the whereabouts of the soil granule of discharge gate.
As shown in fig. 5 to 7, a swing plate 55 is rotatably disposed in the discharge port 500, an edge of the swing plate 55 is hinged to an edge of an opening of the discharge port 500 through a rotating shaft or a hinge, etc., a rotating axis of the swing plate 55 is parallel to a rotating axis of the stirring mechanism 52, a hinge block 54 is disposed on an opposite side of the swing plate 55 with respect to the rotating axis, the hinge block 54 is hinged to one end of a connecting rod 53, the other end of the connecting rod 53 is movably sleeved on the rotating shaft 51, the swing plate 55 is vertically swung and opened and closed in the discharge port 500 along with the eccentric rotation of the stirring mechanism 52, and is sleeved on the rotating shaft 51 through a gap of the connecting rod 53, during the eccentric rotation of the rotating shaft, the swing plate 55 can be linked to form continuous opening and closing swing, so that the discharge port is opened or closed, soil particles fall down, and the intermittent opening and closing motion can prevent the blockage of the mixed soil particles, the opening and closing frequency of the swing plate is the same as the rotation number of the rotation shaft, the solid material outlet continuously discharges materials without interruption, the bottom of the mixing box 50 comprises a fixing plate 58, the fixing plate 58 is arranged opposite to the swing plate 55, and the fixing plate 58 and the swing plate 55 enable the bottom of the mixing box 50 to form an open or closed structure; one side wall of the fixing plate 58 opposite to the swinging plate 55 comprises a serrated tooth mouth structure 580, the tooth mouth structure 580 extends along the length direction of the rotating shaft 51, and the two tooth mouth structures 580 are staggered and staggered; the two jaw structures 580 crush the soil particles again by the swinging open and close of the swinging plate 55, while also preventing the clogging of the discharge port 500.
As shown in fig. 6, the stirring mechanism 52 includes stirring impellers 520 and dividing lines 59, the dividing lines 59 are high-strength fine iron bars, a plurality of the stirring impellers 520 are arranged along the axial direction of the rotating shaft 51 at intervals, the dividing lines 59 are sequentially arranged on the blades of the stirring impellers 520 along the direction of the rotating shaft 51, the dividing lines 59 are parallel to the rotating shaft 51, and a plurality of the dividing lines 59 are respectively arranged at intervals along the length direction of the blades, so that soil particles are further finely divided and crushed during the rotation of the dividing lines 59, and the first remediation agent material can be sufficiently mixed with the soil particles.
As shown in fig. 5 and 8, the second repairing agent assembly 6 includes a liquid storage tank 60, a partition 63 and a pressurizing water pump 62, the liquid storage tank 60 is a closed box structure including an inner cavity, the liquid storage tank 60 is divided into a liquid collecting cavity 61 and a pressurizing cavity 64 by the partition 63, a through hole 66 is formed in the partition 63, the liquid collecting cavity 61 is communicated with the pressurizing cavity 64 by the through hole 66, the pressurizing water pump 62 is arranged in the liquid collecting cavity 61, and a liquid outlet of the pressurizing water pump 62 is connected with the through hole 66; a plurality of liquid outlet micropores 65 are formed in one side wall, opposite to the partition plate 63, of the pressurizing cavity 64, a plurality of liquid outlet micropores 65 are formed at intervals along the advancing direction perpendicular to the soil remediation device, the liquid outlet micropores 65 are located below the discharge port 500 of the mixing box 50, the liquid outlet micropores 65 are located on the front side of the discharge port 500 in the advancing direction of the soil remediation device, and the second remediation agent component 6 sprays second remediation agent solution into soil particles which are sprayed downwards from the discharge port 500. Pressurizing the pressurizing cavity by a pressurizing water pump 62, spraying the solution in the pressurizing cavity 64 from the liquid outlet micropores 65 in a spraying state, mixing the sprayed solution with the soil particles at the discharge hole 500, absorbing the mixed solution by the soil particles, and then dropping the soil particles to the ground; the water solution increases the humidity of the soil, and simultaneously, the culture medium is easy to be mixed into soil particles, thereby being beneficial to the growth of microorganisms.
A microbial remediation method of heavy metal contaminated soil comprises the following steps: the method comprises the following steps:
s1: carrying out rotary tillage on soil polluted by heavy metal by a rotary cultivator for 30 centimeters below the ground, and repeatedly crushing the soil by a plow harrow to form soil particles so as to crush massive soil as much as possible;
s2: adding a soil conditioner into the soil particles, turning over, watering and standing for 3-5 days; after the soil is over, soil is ploughed again; during the last rotary tillage, the soil can be ploughed for multiple times, and the soil is exposed to the sun to reduce the humidity of the soil as much as possible, wherein the soil conditioner is wheat bran, plant ash, calcium magnesium phosphate fertilizer, quicklime, zeolite, hydroxyapatite and organic fertilizer, is used for increasing the fertilizer of the soil, integrates the acidity and alkalinity of the soil and also provides a growth environment for utilizing microbial colonies;
s3: restoring the polluted soil which is previously ploughed and pretreated by the soil restoration device:
firstly, a soil remediation device is dragged to advance above heavy metal contaminated soil through a traction device 1, a feeding end of a feeding conveying mechanism 3 extends to the position below the ground, soil particles are conveyed to a discharging end of the conveyor through operation of the conveyor and a circularly rotating feeding shovel 32, soil at the discharging end is conveyed to a mixing mechanism 5 below the discharging end, the soil particles are turned and crushed in the mixing mechanism 5, meanwhile, a microbial culture medium is added into the mixing mechanism 5 through a first remediation agent adding assembly 4, and the microbial culture medium and the soil particles are mixed under the action of a stirring mechanism;
the eccentric cams are rotationally arranged on the wall body of the mixing box 50 through the driving of the motor, the rotating shaft 51 of the stirring mechanism is formed to rotate in a deflection mode relative to the mixing box 50 through the two eccentric cams 56, when the stirring impeller 52 rotates to turn over soil, the turning range can be larger due to the action of eccentric motion, soil particles in the mixing box 50 are vibrated, a soil particle lifting state is formed when the rotating blades rotate to the upper surface of the soil particles, the mixing degree of the soil particles and the microbial culture medium is increased, and the whole eccentric rotation of the stirring impeller 52 forms an impact force to further break large soil particles;
thirdly, a plurality of dividing lines on the stirring blade divide larger soil particles in the rotating process of the rotating shaft, so that the crushing degree of the soil is further increased;
in the process of eccentric rotation of the rotating shaft 51, the connecting rod 53 moves eccentrically along with the rotating shaft 51, the connecting rod 53 drives the swinging plate 55 to move around the hinged end of the swinging plate 55 to open and close, when the swinging plate 55 and the fixing plate 58 are in a coplanar state, the discharge port 500 is in a closed state, soil particles are turned and crushed in the mixing box 50 and mixed with a microorganism culture medium, and when the swinging plate 55 is in a staggered state, the discharge port 500 is in an open state, and the soil particles flow out downwards from the discharge port; during the relative movement of the swing plate 55 and the fixed plate 58, the soil particles discharged from the discharge port 500 are crushed again through the tooth mouth structure 580;
in the liquid storage box 60, the pressurizing cavity is pressurized by the pressurizing water pump 62, so that the solution in the pressurizing cavity 64 is sprayed from the liquid outlet micropores 65 in a spraying state, the sprayed solution is mixed with the soil particles in the discharge hole 500 and absorbed by the soil particles, and then the soil particles fall to the ground;
s4: periodically spraying an aqueous solution or a low-concentration microorganism solution to the soil particles after the remediation treatment.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a microbial remediation equipment of heavy metal contaminated soil which characterized in that: the soil remediation device comprises a traction device (1) and a soil remediation device arranged behind the traction device (1), wherein the soil remediation device is displaced on soil to be remediated; the soil remediation device comprises a rack (2), and a feeding and conveying mechanism (3), a first remediation agent adding assembly (4), a mixing mechanism (5) and a second remediation agent adding assembly (6) which are arranged on the rack (2); the machine frame (2) is connected and arranged behind the traction device (1), the feeding and conveying mechanism (3) collects soil particles on the ground, the mixing mechanism (5) is arranged at the discharge end of the feeding and conveying mechanism (3), the mixing mechanism (5) is arranged behind the feeding and conveying mechanism (3), the first repairing agent adding component (4) adds a first repairing agent material into the mixing mechanism (5), the second repairing agent adding component (6) is arranged at the discharge end of the mixing mechanism (5), and the second repairing agent adding component (6) sprays a second repairing agent solution into a soil mixture after the outlet of the mixing mechanism (5);
the mixing mechanism (5) comprises a mixing box (50), a stirring mechanism (52) and an eccentric cam (56), wherein the mixing box (50) is of a box structure with an opening facing the mixing box, the stirring mechanism (52) is transversely and rotatably arranged in the mixing box (50), the eccentric cam (56) is fixedly arranged at each of two ends of a rotating shaft of the stirring mechanism (52), the eccentric cam (56) is rotatably arranged on the side wall of the mixing box (50), and the stirring mechanism (52) eccentrically rotates through the eccentric cam (56); a rotating shaft (51) of the stirring mechanism (52) is vertical to the advancing direction of the soil remediation device, and a semi-open discharge hole (500) is formed in the bottom of the mixing box (50);
discharge gate (500) internal rotation is provided with swing board (55), the articulated drill way edge that sets up at discharge gate (500) of an edge of swing board (55), the axis of rotation of swing board (55) is on a parallel with the axis of rotation of rabbling mechanism (52), just swing board (55) are provided with articulated piece (54) for the opposite side of axis of rotation, articulated piece (54) set up with the one end of connecting rod (53) is articulated, the other end activity cover of connecting rod (53) is established on axis of rotation (51), swing board (55) open and shut along with the eccentric rotation of rabbling mechanism (52) and set up in discharge gate (500).
2. The microbial remediation device for heavy metal contaminated soil of claim 1, wherein: the feeding conveying mechanism (3) comprises a conveyor (31) and feeding shovels (32) arranged on the conveyor (31), the conveyor (31) is a belt conveyor, the feeding shovels (32) are sequentially arranged along the profile of a rotating belt of the conveyor (31) at intervals, the conveyor (31) is obliquely arranged from front to back from a feeding end to a discharging end, the feeding end of the conveyor (31) extends into the ground, and the discharging end of the conveyor (31) is positioned above the mixing mechanism (5); the feeding shovel (32) shovels soil particles on the ground and below the ground and continuously conveys the soil particles to the mixing mechanism (5) through the feeding conveying mechanism (3).
3. The microbial remediation device for heavy metal contaminated soil of claim 2, wherein: feeding shovel (32) are L type bending plate body, the length direction of feeding shovel (32) sets up along the width direction of conveyer (31), feeding shovel (32) include integrated into one piece's shovel sword portion (33) and earth collection portion (34), shovel sword portion (33) are connected on the rotation area of conveyer (31) through earth collection portion (34), shovel sword portion (33) interval and be on a parallel with the rotation area of conveyer, shovel sword portion (33) are located the front side of earth collection portion (34) on the direction of transmission.
4. The microbial remediation device for heavy metal contaminated soil of claim 1, wherein: the bottom of the mixing box (50) comprises a fixed plate (58), the fixed plate (58) and the swinging plate (55) are arranged oppositely, and the fixed plate (58) and the swinging plate (55) enable the bottom of the mixing box (50) to form an open or closed structure; one side wall of the fixing plate (58) opposite to the swinging plate (55) comprises a serrated tooth mouth structure (580), the tooth mouth structure (580) extends along the length direction of the rotating shaft (51), and the two tooth mouth structures (580) are staggered and staggered; the two tooth mouth structures (580) break up soil particles by the swinging opening and closing of the swinging plate (55).
5. The microbial remediation device for heavy metal contaminated soil of claim 1, wherein: the stirring mechanism (52) comprises stirring impellers (520) and dividing lines (59), the stirring impellers (520) are arranged at intervals along the axial direction of the rotating shaft (51), the dividing lines (59) penetrate through blades of the stirring impellers (520) in sequence along the direction of the rotating shaft (51), the dividing lines (59) are parallel to the rotating shaft (51), and the dividing lines (59) are arranged at intervals along the length direction of the blades.
6. The microbial remediation device for heavy metal contaminated soil of claim 1, wherein: the second repairing agent adding assembly (6) comprises a liquid storage tank (60), a partition plate (63) and a pressurizing water pump (62), wherein the partition plate (63) and the pressurizing water pump (62) are arranged in an inner cavity of the liquid storage tank (60), the liquid storage tank (60) is of a closed box body structure with an inner cavity, the liquid storage tank (60) is divided into a liquid collecting cavity (61) and a pressurizing cavity (64) through the partition plate (63), a through hole (66) is formed in the partition plate (63), the liquid collecting cavity (61) is communicated with the pressurizing cavity (64) through the through hole (66), the pressurizing water pump (62) is arranged in the liquid collecting cavity (61), and a liquid outlet of the pressurizing water pump (62) is connected with the through hole (66); a plurality of liquid outlet micropores (65) are formed in one side wall, opposite to the partition plate (63), of the pressurizing cavity (64), a plurality of liquid outlet micropores (65) are formed at intervals in the advancing direction perpendicular to the soil restoration device, the liquid outlet micropores (65) are located below a discharge port (500) of the mixing box (50), the liquid outlet micropores (65) are located on the front side of the discharge port (500) in the advancing direction of the soil restoration device, and a second restoration agent adding assembly (6) sprays second restoration agent solution to soil particles which are downwards spilled from the discharge port (500).
7. The microbial remediation device for heavy metal contaminated soil of claim 1, wherein: the first repairing agent material is a microorganism culture medium, and the second repairing agent solution is an aqueous solution or a microorganism growth agent nutrient solution.
8. The method for remediating heavy metal contaminated soil by using microorganism remediating equipment as set forth in any one of claims 1 to 7, wherein: the method comprises the following steps:
s1: carrying out rotary tillage on the land polluted by heavy metal through a rotary cultivator, and smashing the soil for multiple times through a plow harrow to form soil particles;
s2: adding a soil conditioner into the soil particles, turning over, watering and standing for 3-5 days; after the soil is over, soil is ploughed again;
s3: restoring the polluted soil which is previously ploughed and pretreated by the soil restoration device:
firstly, a soil remediation device is dragged to advance above heavy metal contaminated soil through a traction device (1), a feeding end of a feeding conveying mechanism (3) extends to the position below the ground, soil particles are conveyed to a discharging end of the conveyor through the operation of the conveyor and a feeding shovel (32) which rotates in a circulating manner, the soil at the discharging end is conveyed to a mixing mechanism (5) below, the soil particles are turned and crushed in the mixing mechanism (5), meanwhile, a first remediation agent adding assembly (4) adds a microbial culture medium into the mixing mechanism (5), and the microbial culture medium and the soil particles are mixed under the action of a stirring mechanism;
the eccentric cams are rotationally arranged on the wall body of the mixing box (50) in a driving mode through a motor, a rotating shaft (51) of the stirring mechanism rotates relative to the mixing box (50) through the two eccentric cams (56), when the stirring impeller (520) rotates to turn over soil, the turning range can be larger due to the action of eccentric motion, soil particles in the mixing box (50) are vibrated, a soil particle lifting state is formed when the rotating blades rotate to the upper surface of the soil particles, the mixing degree of the soil particles and the microorganism culture medium is increased, and the integral eccentric rotation of the stirring impeller (520) forms an impact force which can further break large soil particles;
thirdly, a plurality of dividing lines on the stirring blade divide larger soil particles in the rotating process of the rotating shaft, so that the crushing degree of the soil is further increased;
in the process of eccentric rotation of the rotating shaft (51), the connecting rod (53) moves eccentrically along with the rotating shaft (51), the connecting rod (53) drives the swinging plate (55) to move around the hinged end of the swinging plate (55) in an opening and closing mode, when the swinging plate (55) and the fixing plate (58) are in a coplanar state, the discharge port (500) is in a closed state, soil particles are turned and crushed in the mixing box (50) and mixed with the microorganism culture medium, and when the swinging plate (55) is in a staggered state, the discharge port (500) is in an open state, and the soil particles flow out downwards from the discharge port; during the relative movement of the swinging plate (55) and the fixed plate (58), the soil particles discharged from the discharge port (500) are crushed again through the tooth mouth structure (580);
in the liquid storage tank (60), the pressurizing cavity is pressurized by the pressurizing water pump (62), so that the solution in the pressurizing cavity (64) is sprayed from the liquid outlet micropore (65) in a spraying state, the sprayed solution is mixed with the soil particles in the discharge hole (500) and absorbed by the soil particles, and then the soil particles fall to the ground;
s4: the soil particles after the remediation treatment in step S3 are regularly sprayed with an aqueous solution or a low-concentration microorganism solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432875.3A CN109454108B (en) | 2018-11-28 | 2018-11-28 | Microbial remediation equipment for heavy metal contaminated soil and remediation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432875.3A CN109454108B (en) | 2018-11-28 | 2018-11-28 | Microbial remediation equipment for heavy metal contaminated soil and remediation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109454108A CN109454108A (en) | 2019-03-12 |
| CN109454108B true CN109454108B (en) | 2021-03-02 |
Family
ID=65611832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811432875.3A Active CN109454108B (en) | 2018-11-28 | 2018-11-28 | Microbial remediation equipment for heavy metal contaminated soil and remediation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109454108B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111420978A (en) * | 2020-04-26 | 2020-07-17 | 陈爱华 | Method for restoring heavy metal contaminated soil in mining area |
| CN111842449A (en) * | 2020-07-29 | 2020-10-30 | 王帅 | Carrying type soil remediation device |
| CN112620344A (en) * | 2020-12-24 | 2021-04-09 | 广东中烟工业有限责任公司 | Soil remediation device |
| CN113333455A (en) * | 2021-07-14 | 2021-09-03 | 湖南富民环保建设有限公司 | Earthing device for repairing industrial heavy metal soil |
| CN114178305B (en) * | 2021-12-10 | 2023-05-23 | 宁波费尔诺生物科技有限公司 | Soil remediation method |
| CN114749477B (en) * | 2022-04-18 | 2024-07-02 | 酉阳县华渝工业投资(集团)有限公司 | Soil remediation integration equipment |
| CN114798709B (en) * | 2022-05-20 | 2023-10-13 | 河南省燎原勘测规划设计有限公司 | Ecological restoration equipment for mine abandoned land |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506377B (en) * | 2013-09-25 | 2015-07-15 | 浙江大学 | Multi-heat source and shaftless intervallic heating type thermal desorption device for organic pollutant contaminated soil repair |
| CN104438311A (en) * | 2014-11-11 | 2015-03-25 | 武汉都市环保工程技术股份有限公司 | Thermal-sensitivity contaminant contaminated soil thermal drive desorption repair system |
| CN205362213U (en) * | 2016-01-27 | 2016-07-06 | 亿利首建生态科技有限公司 | Soil normal position repair equipment |
| CN105728451B (en) * | 2016-04-29 | 2018-10-30 | 温岭市创嘉信息科技有限公司 | A kind of application method of soil pesticide thermal desorption device |
| CN105728447B (en) * | 2016-05-12 | 2018-09-07 | 涂瑞强 | The soil remediation method of flolimat ingredient in a kind of removal agricultural land soil |
| CN107175038A (en) * | 2017-06-14 | 2017-09-19 | 葛建 | A kind of horizontal mixer bottom discharge door mechanism |
| CN107552560B (en) * | 2017-08-28 | 2021-10-22 | 广州德隆环境检测技术有限公司 | Method for restoring heavy metal contaminated soil by using plant and microorganism |
| CN107457268A (en) * | 2017-10-12 | 2017-12-12 | 李林 | A kind of restoration and treatment device of contaminated soil |
| CN107891059A (en) * | 2017-12-21 | 2018-04-10 | 刘艳燕 | A kind of abatement equipment for soil pollution |
-
2018
- 2018-11-28 CN CN201811432875.3A patent/CN109454108B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109454108A (en) | 2019-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109454108B (en) | Microbial remediation equipment for heavy metal contaminated soil and remediation method thereof | |
| CN105191531B (en) | A kind of soil renewal optimizes machine | |
| CN107567733A (en) | A kind of miniature hand pulling type soil remediation device | |
| CN111515233A (en) | Soil pollution remediation equipment and method | |
| CN213548313U (en) | Agricultural fertilizing and seeding device | |
| CN111684880B (en) | Intelligent integrated processing device for biomass straw fertilizer | |
| CN112570445A (en) | Cultivated land soil repair system | |
| CN216460840U (en) | Be used for prosthetic equipment of heavy metal cadmium soil | |
| CN113000575A (en) | Organic chlorine pesticide contaminated site soil remediation pretreatment device and method | |
| CN114467388A (en) | Soil prosthetic devices is used in forestry farming with pesticide application and fertilization function | |
| CN207135465U (en) | A kind of gardens nursery soil remediation processing system | |
| CN111247893B (en) | Harmful substance degradation device of pesticide contaminated soil | |
| CN109174956A (en) | A kind of soil-repairing agent applies device | |
| RU156195U1 (en) | MACHINE FOR COMPREHENSIVE TREATMENT OF SALON SOILS | |
| CN108834465B (en) | Saline-alkali rice field fertility improvement method | |
| CN105830566B (en) | Multifunctional soil oxygenation sterilization residual pesticide removing farming machine | |
| CN112602392B (en) | Garden planting soil improvement system and method | |
| CN115254941A (en) | Intelligence pasture is planted and is used soil prosthetic devices | |
| CN213214417U (en) | Biomass straw fertilizer crushing device | |
| CN111183762B (en) | Plant cultivation device for mine waste land | |
| CN212034889U (en) | Agricultural machine device of digging | |
| CN112075192A (en) | Agriculture and forestry soil improvement device | |
| CN113056976A (en) | Agricultural soil plowing and repairing device | |
| CN214417300U (en) | Modular soil remediation administers device | |
| CN113099747A (en) | Soil turning device for agricultural planting and soil turning method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210208 Address after: 134003 Erdaojiang Industrial Park, Erdaojiang District, Tonghua City, Jilin Province Applicant after: Tonghua Xinhong New Material Co.,Ltd. Address before: 214000 Jiangsu Wuxi, new Lake District, No. 200, Linghu Avenue, innovation network 2 Applicant before: WUXI FEISHU TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Microbial Remediation Equipment and Remediation Method for Heavy Metal Contaminated Soil Effective date of registration: 20230322 Granted publication date: 20210302 Pledgee: Bank of China Limited Tonghua Branch Pledgor: Tonghua Xinhong New Material Co.,Ltd. Registration number: Y2023220000018 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210302 Pledgee: Bank of China Limited Tonghua Branch Pledgor: Tonghua Xinhong New Material Co.,Ltd. Registration number: Y2023220000018 |