CN109500077B - Heavy metal contaminated soil is extraction element for restoration - Google Patents
Heavy metal contaminated soil is extraction element for restoration Download PDFInfo
- Publication number
- CN109500077B CN109500077B CN201811324041.0A CN201811324041A CN109500077B CN 109500077 B CN109500077 B CN 109500077B CN 201811324041 A CN201811324041 A CN 201811324041A CN 109500077 B CN109500077 B CN 109500077B
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- CN
- China
- Prior art keywords
- bolts
- lifting
- wall
- carriage
- heavy metal
- Prior art date
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- 239000002689 soil Substances 0.000 title claims abstract description 51
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 47
- 238000000605 extraction Methods 0.000 title claims description 20
- 239000007788 liquid Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 12
- 210000000078 claw Anatomy 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 230000007306 turnover Effects 0.000 claims 1
- 239000002738 chelating agent Substances 0.000 abstract description 8
- 238000005507 spraying Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 13
- 229960001484 edetic acid Drugs 0.000 description 8
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 7
- 238000011161 development Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005067 remediation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- -1 EDTA organic compound Chemical class 0.000 description 1
- 241001233242 Lontra Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000004744 fore-foot Anatomy 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B09C1/08—Reclamation of contaminated soil chemically
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B49/00—Combined machines
- A01B49/04—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B77/00—Machines for lifting and treating soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
-
- 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)
- Soil Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of buildings, in particular to an extracting device for repairing heavy metal contaminated soil, which aims at the problem that holes are easy to be blocked in single use of the extracting device for repairing heavy metal contaminated soil. According to the invention, the turning plate is used, the turning rubber blocks are arranged on the circumferential outer wall of the feeding conveyor belt, and when the turning rubber blocks run to the bottom of the turning plate, soil can be turned over along with the turning plate due to the blocking effect of the turning rubber blocks, so that the reverse side of the soil is sprayed by subsequent spraying, and the whole heavy metal soil can be effectively sprayed by the chelating agent.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to an extraction device for heavy metal contaminated soil remediation.
Background
The development of chemical industry keeps the GDP in China continuously growing, which represents the development of China, the faster the industrial development, the stronger the manufacturing capability of China, the faster the development of China, but conversely, the rapid development of the chemical industry causes more and more environmental pollution, the field of the chemical industry contains a large amount of heavy metal ions after being moved, the normal life of people is endangered, and only the heavy metal ions are removed, the field can be normally used.
The heavy metal pollution is caused in the heavy metal treatment process, the heavy metal treatment is very complicated, the chelating agent prepared by using EDTA (ethylene diamine tetraacetic acid) solution through scientific search can effectively remove heavy metal ions, and the conventional soil remediation equipment cannot well absorb the heavy metal ions in the soil in the heavy metal soil use process, and cannot carry out continuous treatment, so that the treatment period is very long.
Disclosure of Invention
Based on the technical problem that holes are easy to be blocked in single-structure use of the extraction device for repairing heavy metal contaminated soil, the invention provides the extraction device for repairing heavy metal contaminated soil.
The invention provides an extracting device for repairing heavy metal contaminated soil, which comprises a carriage, wherein two wheel brackets are connected to two ends of the bottom of the carriage through bolts, two wheel rotating shafts are sleeved on two side inner walls of the wheel brackets through bearings, two wheel rotating shafts are connected to two ends of the circumference outer wall of the wheel rotating shafts through bolts, first holes are formed in one end of the inner walls of the two sides of the carriage, a lifting hopper fixing bolt is sleeved on the two first holes through bearings, lifting hoppers are welded to one ends, close to the lifting hopper fixing bolt, of the carriage through bolts, mounting plates are connected to two ends of the other end of the carriage through bolts, a feeding center shaft is connected to two side inner walls of the carriage through bolts, a feeding conveyor belt is sleeved on the circumference outer wall of the feeding center shaft through bolts, a material overturning rubber block is connected to one side of the bottom inner wall of the carriage through bolts, a transmission box is connected to one side of the motor through bolts, a liquid storage box is connected to the other end of the inner wall of the carriage through bolts, a material overturning plate is connected to one end of the carriage through a transverse rod through a hinge, and the bottom of the carriage is connected to one end of the carriage through a transverse rod through a hinge.
Preferably, the top and the bottom of the both sides inner wall of the lift bucket all have the lift pivot through the bearing connection, and the circumference outer wall of two lift pivots has cup jointed and has carried the material conveyer belt, and the circumference outer wall of carrying the material conveyer belt has the lift baffle through bolted connection, and the bottom of lift bucket has six clearance forepaws through bolted connection, and the one end top of lift bucket has the ejection of compact box through bolted connection, and the bottom of ejection of compact box has the monolith baffle through bolted connection, and the one side top of lift bucket has motor one through bolted connection, and the output shaft of motor one is connected with the lift pivot.
Preferably, a second hole is formed in the bottom of one side of the lifting hopper, and the inner walls of two sides of the second hole are connected with a screening screen plate through bolts.
Preferably, the output shaft of the second motor is sleeved with a first transmission belt, and the first transmission belt is sleeved with the feeding middle shaft.
Preferably, the top of the mounting cross plate is connected with a liquid guide pipe through a bolt, and the liquid guide pipe is connected with the liquid spray head.
Preferably, the inner wall of the bottom of the liquid storage tank is connected with a water pump through a bolt, and the water pump is connected with one end of the liquid guide pipe through a bolt.
Preferably, a second transmission belt is sleeved on the inner wall of one side of the transmission case, and the second transmission belt is sleeved with the wheel rotating shaft.
Preferably, both sides of the bottom of the carriage are connected with hydraulic cylinders through bolts, and the bottoms of the two hydraulic cylinders are connected with mounting brackets through bolts.
Preferably, the inner walls at two sides of the mounting bracket are sleeved with a central shaft through bearings, the circumferential outer wall of the central shaft is sleeved with a mounting roller, and the circumferential outer wall of the mounting roller is welded with a monolith claw.
Preferably, the bottom of the other end of the carriage is connected with a second hydraulic rod through a bolt, and one end of the second hydraulic rod is hinged with the bottom of the discharging hopper.
Compared with the prior art, the invention provides the extracting device for repairing the heavy metal contaminated soil, which has the following beneficial effects:
1. This extraction element for heavy metal contaminated soil restoration is provided with the liquid reserve tank through the top that sets up the device, and the liquid reserve tank is before the use operating personnel to the inside EDTA (ethylenediamine tetraacetic acid) solution that adds of liquid reserve tank, and through looking for the chelating agent that reads the EDTA solution and can regard as the heavy metal removal, can directly detach the heavy metal ion in the soil in carrying out the treatment of heavy metal soil, and the inside of railway carriage is provided with liquid spray head can spray the chelating agent with the soil is extensive, can effectually get rid of the heavy metal in the soil.
2. This extraction element for heavy metal contaminated soil restoration has cup jointed the stirring pivot through the bearing through the both sides inner wall that sets up at the railway carriage of device, and the circumference outer wall bolted connection of stirring pivot has the stirring board, and the use of cooperation stirring board is provided with the stirring rubber piece at the circumference outer wall of pay-off conveyer belt, when the bottom of stirring rubber piece operation to stirring board, because the blocking effect of stirring rubber piece, soil can overturn along with stirring board for follow-up spraying sprays the reverse side to soil, can effectually make heavy metal soil wholly all receive the spraying of chelating agent.
3. This extraction element for heavy metal contaminated soil restoration is provided with the clearance front jaw through the bottom of setting up the lifting hopper of device, and the hole is seted up to the bottom of lifting hopper and bolted connection has the sieve material otter board, can get rid of impurity such as massive stone and branch in the soil when carrying out the lifting of heavy metal soil, prevents to influence the inside operation of device, increases the life of device.
4. This extraction element for heavy metal contaminated soil restoration is provided with two pneumatic cylinders through the bottom of the railway carriage that sets up the device, and the bottom of two pneumatic cylinders is connected with a mounting roller through the bearing, and the circumference outer wall of mounting roller has the arrangement claw through bolted connection, draws preceding soil back at the lifting hopper, and the arrangement claw can be to soil arrangement level and smooth, can guarantee the ground after the soil treatment.
5. This extraction element for heavy metal contaminated soil restoration is provided with the material baffle through the circumference outer wall that sets up the inside material conveyer belt that carries of the lift hopper of device, can make things convenient for the extraction of soil, and the top of lift hopper is provided with the ejection of compact box, and the hole is seted up to the bottom of ejection of compact box and is connected with the material piece baffle, can make more level and smooth when heavy metal soil unloading, increases the efficiency that sprays the heavy metal that removes, and the design of unloading hopper can make the soil unloading level and smooth can not take place the accumulation of soil.
Drawings
Fig. 1 is a schematic side view of an extraction device for restoring heavy metal contaminated soil, which is provided by the invention;
fig. 2 is a schematic diagram of a partial side view structure of an extraction device for repairing heavy metal contaminated soil according to the present invention;
fig. 3 is a schematic diagram of a partial front view structure of an extraction device for repairing heavy metal contaminated soil according to the present invention;
FIG. 4 is a schematic diagram of a partial sectional structure of an extraction device for repairing heavy metal contaminated soil according to the present invention;
Fig. 5 is a schematic diagram of a partial structure of an extraction device for repairing heavy metal contaminated soil according to the present invention.
In the figure: 1a lifting hopper, 2a hydraulic rod I, 3a motor II, 4a transmission belt I, 5a transmission box, 6 a feeding middle shaft, 7 a discharging box, 8 a liquid guide pipe, 9 a liquid storage box, 10 a water pump, 11 a material turning plate, 12a mounting transverse plate, 13 a liquid spray head, 14a material turning shaft, 15a mounting plate, 16 a feeding transmission belt, 17 a wheel bracket, 18 a blanking hopper, 19 a hydraulic rod II, 20 wheels, 21a cleaning front claw, 22 a material lifting shaft, 23 a material lifting transmission belt, 24 a material baffle, 25 a material lifting baffle, 26 a screen plate, 27 a lifting hopper fixing bolt, 28 a motor I, 29 a material turning rubber block, 30 a wheel shaft, 31 a transmission belt II, 32 a hydraulic cylinder, 33 a mounting bracket, 34 a mounting roller, 35 a material lifting claw and 36 a carriage.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 5, an extracting device for repairing heavy metal contaminated soil comprises a carriage 36, two wheel brackets 17 are connected to two ends of the bottom of the carriage 36 through bolts, two wheel rotating shafts 30 are sleeved on two side inner walls of the four wheel brackets 17 through bearings, wheels 20 are connected to two ends of the circumference outer walls of the two wheel rotating shafts 30 through bolts, first holes are formed in one ends of the two side inner walls of the carriage 36, a lifting hopper fixing bolt 27 is sleeved on the two first holes through bearings, lifting hoppers 1 are welded on one ends, close to the two lifting hopper fixing bolts 27, of the two lifting hoppers, mounting plates 15 are connected to two sides of the other end of the carriage 36 through bolts, feeding center shafts 6 are connected to two sides of the two mounting plates 15 through bolts, feeding conveyor belts 16 are sleeved on the circumference outer walls of the two feeding center shafts 6, the circumference outer wall of pay-off conveyer 16 has the stirring rubber piece 29 through bolted connection, the bottom inner wall one end of railway carriage 36 has motor two 3 through bolted connection, one side of motor two 3 has drive box 5 through bolted connection, the both sides inner wall other end of railway carriage 36 has liquid reserve tank 9 through bolted connection, the other end inner wall of railway carriage 36 has installation diaphragm 12 through bolted connection, and the bottom of installation diaphragm 12 has liquid spray head 13 through bolted connection, the one end bottom of railway carriage 36 has hydraulic rod one 2 through bolted connection, and the one end of hydraulic rod one 2 articulates with lifting hopper 1, the both sides inner wall of railway carriage 36 has four stirring pivot 14 through the bearing, and the circumference outer wall of four stirring pivot 14 has stirring board 11 through bolted connection, the other end bottom of railway carriage 36 has lower hopper 18 through hinged joint.
According to the invention, the top and the bottom of the inner walls of the two sides of a lifting hopper 1 are connected with lifting rotating shafts 22 through bearings, the circumferential outer walls of the two lifting rotating shafts 22 are sleeved with lifting conveying belts 23, the circumferential outer walls of the lifting conveying belts 23 are connected with lifting baffle plates 25 through bolts, the bottom of the lifting hopper 1 is connected with six cleaning front claws 21 through bolts, one end top of the lifting hopper 1 is connected with a discharging box 7 through bolts, the bottom of the discharging box 7 is connected with a monolith baffle plate 24 through bolts, one side top of the lifting hopper 1 is connected with a first motor 28 through bolts, an output shaft of the first motor 28 is connected with the lifting rotating shafts 22, one side bottom of the lifting hopper 1 is provided with a second hole, the two side inner walls of the second hole are connected with a screening screen plate 26 through bolts, the output shaft of the second motor 3 is sleeved with a first driving belt 4, and the first driving belt 4 is sleeved with a feeding center shaft 6;
The top of installation diaphragm 12 is connected with catheter 8 through the bolted connection, and catheter 8 is connected with liquid shower head 13, the bottom inner wall of liquid reserve tank 9 is connected with water pump 10 through bolted connection, and water pump 10 is connected with the one end of catheter 8 through the bolt, one side inner wall of transmission case 5 has cup jointed driving belt two 31, and driving belt two 31 cup joints with wheel pivot 30 mutually, the bottom both sides of railway carriage 36 all have pneumatic cylinder 32 through bolted connection, and the bottom of two pneumatic cylinders 32 all has installing support 33 through bolted connection, the both sides inner wall of two installing support 33 has all cup jointed the axis through the bearing, and the circumference outer wall of axis has cup jointed installation roller 34, and the circumference outer wall welding of installation roller 34 has the monolith claw 35, the other end bottom of railway carriage 36 has hydraulic stem two 19 through bolted connection, and the one end of hydraulic stem two 19 is articulated with the bottom of unloading hopper 18.
When the extracting device for repairing heavy metal contaminated soil is used, firstly, EDTA organic compound solution is added into the liquid storage tank 9 to prepare a heavy metal removing chelating agent, then the device is used for controlling the operation of the device through a storage battery and an internal controller, the motor II 3 drives the device to operate, the motor I28 operates to enable heavy metal contaminated soil in the lifting hopper 1 to be lifted to the top of the lifting hopper 1 by the lifting conveyor belt 23, heavy metal contaminated soil is lifted and conveyed to the top of the feeding conveyor belt 16 and uniformly paved, the liquid spray head 13 sprays EDTA chelating agent, the circumferential outer wall of the feeding conveyor belt 16 is provided with the turning rubber blocks 29, heavy metal soil can be turned over and sprayed through rotation of the turning plate 11, heavy metal is fed to the lower hopper 18 to be paved on the ground after being treated by the EDTA chelating agent, the bottom of the carriage 36 is provided with the monolith 35, the lifting claw 21 can be leveled on the bottom after being lifted, and in the use, the lifting hopper 1, the lower hopper 18 and the hydraulic cylinder 32 can provide power for adjusting the height and the internal hydraulic oil pump in the lifting claw 21.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The utility model provides a heavy metal contaminated soil restoration uses extraction device, includes railway carriage (36), its characterized in that, the bottom both ends of railway carriage (36) all have two wheel supports (17) through bolted connection, four wheel supports (17)'s both sides inner wall has cup jointed two wheel pivots (30) through the bearing, two wheel pivots (30)'s circumference outer wall both ends have wheel (20) through bolted connection, first hole has all been seted up to the one end of railway carriage (36) both sides inner wall, and two first holes have all cup jointed hopper dead bolt (27) through the bearing, two hopper dead bolt (27) one end welding that is close to has hopper (1), the other end both sides of railway carriage (36) have mounting panel (15) through bolted connection, and two mounting panel (15) are close to one side have pay-off axis (6) through bolted connection, the both sides inner wall of railway carriage (36) have pay-off axis (6) through bolted connection, two the circumference outer wall of pay-off axis (6) cup joints pay-off conveyer (16), the circumference outer wall of pay-off conveyer (16) has motor (29) through the connecting block (3) and have motor (3) to turn over one side of material through two motor (3), the other ends of the inner walls of the two sides of the carriage (36) are connected with a liquid storage tank (9) through bolts, the inner walls of the other ends of the carriage (36) are connected with an installation transverse plate (12) through bolts, the bottoms of the installation transverse plate (12) are connected with a liquid spray header (13) through bolts, the bottoms of one ends of the carriage (36) are connected with a first hydraulic rod (2) through bolts, one end of the first hydraulic rod (2) is hinged with a lifting hopper (1), the inner walls of the two sides of the carriage (36) are connected with four turning rotating shafts (14) through bearings, the circumferential outer walls of the four turning rotating shafts (14) are connected with turning plates (11) through bolts, the other end bottom of the carriage (36) is connected with a discharging hopper (18) through a hinge, the liquid spray heads (13) are uniformly arranged at the bottom of the installation transverse plate (12), the tops and the bottoms of the inner walls of the two sides of the lifting hopper (1) are connected with lifting rotating shafts (22) through bearings, the circumferential outer walls of the two lifting rotating shafts (22) are sleeved with lifting conveying belts (23), the circumferential outer walls of the lifting conveying belts (23) are connected with lifting baffle plates (25) through bolts, the bottom of the lifting hopper (1) is connected with six cleaning front claws (21) through bolts, the top of one end of the lifting hopper (1) is connected with a discharging box (7) through bolts, the bottom of the discharging box (7) is connected with a material arranging baffle plate (24) through a bolt, the top of one side of the lifting hopper (1) is connected with a first motor (28) through a bolt, the output shaft of the first motor (28) is connected with a lifting rotating shaft (22), a second hole is formed in the bottom of one side of the lifting hopper (1), and the inner walls of two sides of the second hole are connected with a screening screen plate (26) through bolts; the output shaft of the motor II (3) is sleeved with a transmission belt I (4), and the transmission belt I (4) is sleeved with a feeding center shaft (6); the top of the mounting transverse plate (12) is connected with a liquid guide pipe (8) through a bolt, and the liquid guide pipe (8) is connected with a liquid spray header (13); the inner wall of the bottom of the liquid storage tank (9) is connected with a water pump (10) through a bolt, and the water pump (10) is connected with one end of the liquid guide tube (8) through a bolt; the inner wall of one side of the transmission case (5) is sleeved with a second transmission belt (31), and the second transmission belt (31) is sleeved with a wheel rotating shaft (30).
2. The extraction device for repairing heavy metal contaminated soil according to claim 1, wherein both sides of the bottom of the carriage (36) are connected with hydraulic cylinders (32) through bolts, and the bottoms of the two hydraulic cylinders (32) are connected with mounting brackets (33) through bolts.
3. The extraction device for repairing heavy metal contaminated soil according to claim 2, wherein the inner walls of both sides of the two mounting brackets (33) are sleeved with a central shaft through bearings, the circumferential outer wall of the central shaft is sleeved with a mounting roller (34), and the circumferential outer wall of the mounting roller (34) is welded with a monolith claw (35).
4. The extraction device for repairing heavy metal contaminated soil according to claim 1, wherein the bottom of the other end of the carriage (36) is connected with a second hydraulic rod (19) through a bolt, and one end of the second hydraulic rod (19) is hinged with the bottom of the discharging hopper (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324041.0A CN109500077B (en) | 2018-11-08 | 2018-11-08 | Heavy metal contaminated soil is extraction element for restoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324041.0A CN109500077B (en) | 2018-11-08 | 2018-11-08 | Heavy metal contaminated soil is extraction element for restoration |
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| Publication Number | Publication Date |
|---|---|
| CN109500077A CN109500077A (en) | 2019-03-22 |
| CN109500077B true CN109500077B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811324041.0A Active CN109500077B (en) | 2018-11-08 | 2018-11-08 | Heavy metal contaminated soil is extraction element for restoration |
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