CN111195650A - Heavy metal contaminated soil remediation machine and method - Google Patents
Heavy metal contaminated soil remediation machine and method Download PDFInfo
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- CN111195650A CN111195650A CN202010027480.6A CN202010027480A CN111195650A CN 111195650 A CN111195650 A CN 111195650A CN 202010027480 A CN202010027480 A CN 202010027480A CN 111195650 A CN111195650 A CN 111195650A
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- soil
- heavy metal
- tank
- leaching
- leacheate
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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
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a heavy metal contaminated soil repairing machine, which relates to the technical field of heavy metal soil repairing and comprises an outer wall of a machine body, wherein a soil crushing mechanism for mashing soil is arranged at an opening of the outer wall of the machine body, a soil washing mechanism for washing the soil is also arranged in the outer wall of the machine body, a soil discharging mechanism for discharging the washed soil is arranged at one end, away from the soil crushing mechanism, of the outer wall of the machine body, and an eluent treating mechanism for treating eluent is arranged at one side, away from the soil washing mechanism, of the outer wall of the machine body. The invention has the effect of effectively treating the leacheate after the leaching operation is finished by arranging the leacheate treatment mechanism.
Description
Technical Field
The invention relates to the technical field of heavy metal soil remediation, in particular to a heavy metal contaminated soil remediation machine and a heavy metal contaminated soil remediation method.
Background
Soil is an important component of the natural environment and is the material foundation on which humans live. In recent years, various activities of human beings have increasingly influenced the soil environment, and the heavy metal pollution of the soil is increasingly serious. The heavy metal pollution sources of soil are wide, and mainly come from production and living activities of human beings, including mining, smelting, metal processing, chemical industry, waste battery treatment, electronic, tanning, dye and other industrial discharged three wastes, automobile exhaust emission, pesticide and fertilizer application and the like.
The technology for restoring the heavy metal contaminated soil mainly comprises a physical restoring method, chemical leaching, phytoremediation and the like, wherein the physical restoring method is high in efficiency, but consumes a large amount of energy, and organic matters and water in the soil are damaged to different degrees; the chemical remediation method can not only carry out in-situ remediation, but also carry out ex-situ remediation, has the advantages of stable treatment effect and thorough remediation, and is easy to cause secondary pollution; the phytoremediation technology has low cost, does not damage the soil structure, does not cause secondary pollution of underground water, can beautify the environment, is easy to be accepted by the society, is a novel technology integrating ecology and treatment, is rapidly developed to become one of green soil environment remediation technologies, but has long phytoremediation period and is not suitable for urban soil remediation.
The existing soil remediation machine, such as a Chinese patent with an authorization publication number of CN104646406B, discloses a heavy metal contaminated soil remediation integrated machine, which comprises a machine body outer wall, a soil feeding hole, a soil crushing device, a soil screening device, a soil leaching device, a soil discharging inclined hopper and supporting legs; the outer wall of the machine body is a hollow quadrangular prism cast by molten iron, and the side length of the lower part of the machine body is larger than that of the middle and upper part; the soil feeding port is in an inverted quadrangular frustum pyramid shape, is formed by welding four iron sheets, is positioned at the uppermost part of the outer wall of the machine body, and is welded with the outer wall of the machine body into a whole; the soil crushing device comprises a driving crushing roller and a driven crushing roller; the soil screening device is positioned at the lower part of the soil crushing device and consists of a screen frame, a screen and a soil containing groove; the soil leaching device is positioned at the lower part of the soil screening device and comprises a leached soil feeding hole, a leaching agent adding hole, a rotary inner roller, an outer barrel, a water inlet, a water outlet and a drainage baffle.
The above prior art solutions have the following drawbacks: after the leaching operation is carried out, the leaching solution is not treated, and the leaching solution for leaching the soil polluted by the heavy metal contains the heavy metal and needs to be treated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the heavy metal contaminated soil remediation machine, which is convenient for workers to treat leacheate after leaching operation through the arrangement of a leacheate treatment mechanism, so that the secondary pollution of the leacheate is reduced.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a heavy metal contaminated soil repairing machine, includes the organism outer wall, the opening part of organism outer wall is provided with the soil crushing mechanism who is used for pounding soil to pieces, still be provided with the soil drip washing mechanism that is used for eluting soil in the organism outer wall, the organism outer wall in soil drip washing mechanism department is provided with the soil discharge mechanism that is used for discharging soil after the drip washing, the organism outer wall in the leachate processing mechanism who is used for handling the leachate is seted up to one side of soil drip washing mechanism.
By adopting the technical scheme, in actual application, a worker adds soil to be restored into an opening of the outer wall of the machine body, the soil is crushed by the soil crushing mechanism, the crushed soil is leached by the soil leaching mechanism, the soil after leaching is discharged out of the outer wall of the machine body through the soil discharging mechanism, and the leachate after leaching enters the leachate treatment mechanism for treatment; and the soil leaching mechanism after the leaching operation is finished is cleaned by entering water, the cleaned water enters the leaching solution treatment structure for treatment, and the water entering the leaching solution treatment mechanism can also clean the leaching solution treatment mechanism.
The present invention in a preferred example may be further configured to: the leacheate treatment mechanism comprises an acid-base neutralization tank, an electrolytic cell and a water storage tank, the acid-base neutralization tank is communicated with the soil leaching mechanism through a connecting pipe, the acid-base neutralization tank is far away from one end of the connecting pipe, which is communicated with the electrolytic cell, and the electrolytic cell is far away from one end of the acid-base neutralization tank, which is communicated with the water storage tank.
By adopting the technical scheme, in practical application, the leacheate which finishes leaching operation is neutralized by the acid-base neutralization tank, enters the electrolytic tank after neutralization to finish electrolysis operation, so that heavy metals are separated, and the leacheate which finishes electrolysis operation enters the reservoir and is discharged by operation of workers; the water for cleaning the soil washing mechanism is also operated so that the water is treated.
The present invention in a preferred example may be further configured to: the cistern intercommunication has circulating pipe, circulating pipe keeps away from the one end intercommunication of cistern the connecting pipe.
By adopting the technical scheme, in the practical application, after the water of the clean soil leaching mechanism enters the water storage tank, the water enters the acid-base neutralization tank again through the circulating water pipe for neutralization operation, then enters the electrolytic tank for electrolysis operation, then enters the water storage tank, is repeatedly carried out for a plurality of times so as to further reduce the heavy metal content in the water, and meanwhile, the leaching solution treatment mechanism can be cleaned for a plurality of times.
The present invention in a preferred example may be further configured to: the acid-base neutralization tank comprises a first tank body, a feeding port and stirring blades, the feeding port is located at the top end of the first tank body, and the stirring blades are located in the first tank body.
Through adopting above-mentioned technical scheme, in the practical application, the staff drops into through the dog-house and neutralizes the material and gets into first cell body to make leacheate or water fully mix with neutralization material through stirring vane's rotation, in order to carry out neutralization operation.
The present invention in a preferred example may be further configured to: the stirring blade is provided with a driving motor at the top end of the first tank body.
Through adopting above-mentioned technical scheme, in the in-service operation, when neutralizing the operation, stirring vane is rotated by driving motor drive, and stirring speed and stirring time are set up by driving motor.
The present invention in a preferred example may be further configured to: the electrolytic cell comprises a second cell body and an electrolysis mechanism for electrolyzing liquid, wherein the electrolysis mechanism comprises an electrolysis device, an anode, a cathode and a driving battery, the electrolysis device is positioned at the top end of the second cell body, the anode and the cathode are connected with the electrolysis device, one end of the anode and one end of the cathode far away from the electrolysis device are positioned in the second cell body, and the driving battery is used for supplying power to the electrolysis device.
By adopting the technical scheme, in practical application, the anode and the cathode are matched with the electrolysis device to carry out electrolysis operation on the leacheate or the water in the second tank; in the process, the drive battery supplies power to the electrolysis device to ensure the completion of the electrolysis operation.
The present invention in a preferred example may be further configured to: and a soil filtering mechanism used for intercepting larger pieces of soil is also arranged between the soil crushing mechanism and the soil leaching mechanism.
Through adopting above-mentioned technical scheme, in the in-service use, hold back great bold soil through soil filter mechanism, wait for next restoration operation, reduce the probability of great piece soil card in soil drip washing mechanism isotructure, improve the prosthetic sufficiency to soil simultaneously.
The other purpose of the invention is to provide a method for restoring soil polluted by heavy metal, which enables workers to treat leacheate and water for cleaning a soil leaching mechanism after restoring soil, and meanwhile, the water of the soil leaching mechanism can clean the leacheate treatment mechanism, and the method is realized through the following technical scheme:
a heavy metal contaminated soil remediation method is realized according to the following steps:
the method comprises the following steps: loading the soil to be restored into a soil crushing mechanism, and crushing the soil by the soil crushing mechanism;
step two: filtering the soil crushed by the soil crushing mechanism by a soil filtering mechanism, intercepting larger pieces of soil, and allowing smaller pieces of soil to enter a soil leaching mechanism;
step three: the soil entering the soil leaching mechanism is leached by the leacheate, the soil is discharged through the soil discharging mechanism, and the leacheate enters the leacheate processing mechanism; meanwhile, the soil leaching mechanism is washed by water;
step four: the leacheate enters an acid-base neutralization tank through a connecting pipe, a worker puts neutralization materials into the acid-base neutralization tank from a feeding port, and the neutralization materials are stirred by a stirring blade and enter an electrolytic tank after being neutralized;
step five: the driving battery supplies power to the electrolysis device, the liquid in the second tank body is electrolyzed, and the liquid enters the reservoir after the electrolysis operation is finished;
step six: the staff discharges the liquid in the reservoir; simultaneously, water after cleaning the soil leaching mechanism enters a leaching solution treatment mechanism and is operated according to the method of the fourth step and the method of the fifth step;
step seven: and (5) the water entering the water storage tank enters the acid-base neutralization tank again through the circulating water pipe, the step six is repeated for multiple times, and the water in the water storage tank is discharged by the staff.
By adopting the technical scheme, in actual application, the soil polluted by heavy metal can be repaired, the leacheate after leaching operation is treated, the water for cleaning the soil leaching mechanism can be treated, and the leacheate treatment structure can be cleaned while the water for cleaning the soil leaching mechanism is treated.
In summary, the invention includes at least one of the following beneficial technical effects:
1. through the arrangement of the leacheate treatment mechanism, the leacheate which is subjected to leaching operation can be conveniently treated by workers, and the secondary pollution of the leacheate is reduced;
2. through the arrangement of the soil filtering mechanism, workers can conveniently screen out larger pieces of soil, so that the sufficiency of soil remediation is improved;
3. by the use method, the leacheate and the water for cleaning the soil leaching mechanism can be treated by workers after the soil is repaired, and meanwhile, the water of the soil leaching mechanism can clean the leacheate treatment mechanism.
Drawings
Fig. 1 is a schematic structural diagram of the present embodiment.
In the figure, 1, an outer wall of a machine body, 11, supporting legs, 2, a soil crushing mechanism, 21, a driving crushing roller, 22, a driven crushing roller, 3, a soil leaching mechanism, 31, a leached soil feeding hole, 311, a valve, 32, a leaching agent adding hole, 321, a leaching agent adding pipe, 33, a rotating inner roller, 331, an inner roller water inlet, 34, an outer barrel, 341, an outer barrel water inlet, 35, a water outlet, 36, a pumping baffle, 4, a soil discharging mechanism, 41, a discharging inclined hopper, 5, a leaching agent processing mechanism, 51, an acid-base neutralizing tank, 511, a first tank body, 512, a feeding hole, 513, stirring blades, 514, a driving motor, 52, an electrolytic tank, 521, a second tank body, 522, an electrolytic mechanism, 5221, an electrolytic device, 5222, an anode, 5223, a cathode, 5224, a driving battery, 53, a water storage tank, 54, a connecting pipe, 55, a circulating water pipe, 56, a water pump, 561, Raceway, 6, soil filter mechanism, 61, screen cloth frame, 62, screen cloth, 621, first layer screen cloth, 622, second floor screen cloth, 623, third layer screen cloth, 63, soil hold the groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the heavy metal contaminated soil remediation machine disclosed by the invention comprises an outer machine wall 1 with an opening at one end, wherein a soil crushing mechanism 2 for mashing soil is arranged at the opening of the outer machine wall 1, and a soil washing mechanism 3 for washing soil is also arranged in the outer machine wall 1; a soil discharge mechanism 4 for discharging leached soil is arranged at one end, away from the soil crushing mechanism 2, of the soil leaching mechanism 3 of the outer wall 1 of the machine body, and an leacheate treatment mechanism 5 for treating leacheate is arranged at one side of the soil leaching mechanism 3 of the outer wall 1 of the machine body; a soil filtering mechanism 6 for intercepting larger pieces of soil is also arranged between the soil crushing mechanism 2 and the soil leaching mechanism 3; three supporting legs 11 are uniformly arranged at the bottommost part of the outer wall 1 of the machine body.
The machine body outer wall 1 is a hollow quadrangular prism cast by molten iron, a circuit required by a motor for driving the soil crushing mechanism 2, the soil filtering mechanism 6 and the soil leaching mechanism 3 to operate is buried in the machine body outer wall 1, and the side length of the lower part of the machine body is larger than that of the middle and upper part of the machine body; the open end of the outer wall 1 of the machine body is positioned at one end far away from the ground, is in an inverted quadrangular frustum pyramid shape, is formed by welding four iron sheets, and is welded with the outer wall 1 of the machine body into a whole.
The soil crushing mechanism 2 is positioned at the lower part of the outer wall 1 of the machine body and comprises a driving crushing roller 21 and a driven crushing roller 22, the outer surfaces of the driving crushing roller 21 and the driven crushing roller 22 both contain uniformly distributed crushing points, and the crushing points on the driving crushing roller 21 and the driven crushing roller 22 are mutually staggered to crush blocky soil; in the preferred embodiment, four groups of soil crushing mechanisms 2 are further arranged and are respectively positioned in the middle of the inner side wall of the opening end of the outer wall 1 of the machine body; when soil to be restored enters the outer wall 1 of the machine body, firstly four groups of soil crushing mechanisms 2 at the opening ends of the outer wall 1 of the machine body perform crushing operation, and then a group of crushing mechanisms at the lower part of the outer wall 1 of the machine body perform crushing operation, so that multiple crushing is realized, and the soil can be sufficiently crushed.
The soil filtering mechanism 6 is positioned at the lower part of the soil crushing device and consists of a screen frame 61, a screen 62 and a soil containing groove 63; the inner side of the machine body is welded with a screen frame 61 supporting point, the screen frame 61 can be made of metal, and the screen 62 is arranged in the screen frame 61; the screen 62 is made of iron wire and sequentially comprises a first screen 621, a second screen 622 and a third screen 623, and the apertures of the first screen 621, the second screen 622 and the third screen 623 are gradually reduced from top to bottom; a corresponding small door is arranged on the outer wall of the machine body where each layer of the screen 62 is positioned, so that the screen 62 and soil which does not pass through the screen 62 can be conveniently taken out.
Soil is settled to screen cloth 62 lower extreme and is held groove 63, makes with the iron sheet welding, and the soil of less piece directly falls into soil and holds groove 63, and soil holds groove 63 and falls into two, becomes to invert the quadrangular frustum pyramid shape, and the bottom communicates with soil drip washing mechanism 3, and the soil of great piece is stayed in screen cloth 62, makes things convenient for the staff to take out to carry out the restoration operation once more.
The soil leaching mechanism 3 is positioned at the lower part of the soil filtering mechanism 6 and comprises a leached soil feeding hole 31, a leaching agent adding hole 32, a rotary inner roller 33, an inner roller water inlet 331, an outer roller 34, an outer roller water inlet 341, a water outlet 35 and a drainage baffle 36; the washed soil feed ports 31 are connected with the lower end of the soil containing groove 63, and each washed soil feed port 31 is provided with a valve 311.
The rotary inner drum 33 is cylindrical, and the diameter of the rotary inner drum is suitable for the edge length of the upper part of the machine body of the heavy metal polluted soil restoration all-in-one machine; the outer wall of the rotary inner roller 33 is provided with industrial filter cloth, and the thickness and the number of layers of the filter cloth are determined by experiments; the rotating shaft of the rotating inner drum 33 is a hollow structure, the upper end of the rotating shaft is provided with an eluent adding port 32, the eluent adding port 32 is connected with an eluent adding pipe 321, and the upper side of the rotating inner drum 33 is provided with an inner drum water inlet 331.
The gap part between the rotating inner roller 33 and the lower part of the machine body of the heavy metal contaminated soil remediation all-in-one machine is an outer cylinder 34, a water inlet of the outer cylinder 34 is formed in the upper side of the outer cylinder 34, and a water outlet 35 is formed in one side of the lower part of the outer cylinder 34.
The soil discharging mechanism 4 is positioned at the lower part of the rotary inner drum 33 and comprises a discharging inclined hopper 41, the lower port of the rotary inner drum 33 is connected with the upper port of the discharging inclined hopper 41, the upper part of the discharging inclined hopper 41 is of a conical structure, and the lower outlet of the discharging inclined hopper 41 is inclined to one side of the heavy metal polluted soil restoration all-in-one machine; the rotary inner drum 33 is separated from the discharge chute 41 by a discharge baffle 36.
The leacheate treatment mechanism 5 comprises an acid-base neutralization tank 51, an electrolytic cell 52 and a water storage tank 53, wherein the acid-base neutralization tank 51 is communicated with the soil leaching mechanism 3 through a connecting pipe 54, one end, far away from the connecting pipe 54, of the acid-base neutralization tank 51 is communicated with the electrolytic cell 52, and one end, far away from the acid-base neutralization tank 51, of the electrolytic cell 52 is communicated with the water storage tank 53; the reservoir 53 is communicated with a circulating water pipe 55, one end of the circulating water pipe 55, which is far away from the reservoir 53, is communicated with a connecting pipe 54, and a worker can also arrange filter cloth in the connecting pipe 54 so as to filter leacheate or impurities in water conveniently.
The acid-base neutralization tank 51 comprises a first tank body 511, a feeding port 512 and stirring blades 513, wherein the feeding port 512 is positioned at the top end of the first tank body 511, the stirring blades 513 are positioned in the first tank body 511, and the stirring blades 513 are arranged in a shape similar to fishbone; the stirring vane 513 is provided with a driving motor 514 at the top end of the first tank body 511, so that the staff can fully stir the liquid in the first tank body 511.
The electrolytic cell 52 comprises a second cell body 521 and an electrolytic mechanism 522 for electrolyzing liquid, the electrolytic mechanism 522 comprises an electrolytic device 5221, an anode 5222, a cathode 5223 and a driving battery 5224, the electrolytic device 5221 is positioned at the top end of the second cell body 521, the anode 5222 and the cathode 5223 are both connected with the electrolytic device 5221, one ends of the anode 5222 and the cathode 5223 far away from the electrolytic device 5221 are positioned in the second cell body 521, and the driving battery 5224 is used for supplying power to the electrolytic device 5221.
A water pump 56 and a water delivery pipe 561 are arranged at the communication part of the soil leaching mechanism 3 and the connecting pipe 54, the communication part of the connecting pipe 54 and the acid-base neutralization tank 51, the communication part of the acid-base neutralization tank 51 and the electrolytic tank 52, the communication part of the electrolytic tank 52 and the water reservoir 53 and the communication part of the water reservoir 53 and the circulating water pipe 55, so as to complete the flow of leaching liquid or water.
The implementation principle of the embodiment is as follows: when the soil washing machine is used, a worker puts soil to be restored into the machine body from the opening end of the outer wall 1 of the machine body, and the soil enters the soil washing mechanism 3 after passing through the soil crushing mechanism 2 and the soil filtering mechanism 6; the worker takes out the larger soil in the screen 62 through the small door for the next restoration; the soil in the soil containing groove 63 enters the soil leaching mechanism 3 for leaching operation, and the leaching solution is matched with the rotary inner roller 33 for operation; after the leaching operation is finished, the soil is discharged from the discharge inclined hopper 4, the leacheate enters the leacheate treatment mechanism 5 for treatment, and meanwhile, the inner roller 33 and the outer cylinder 34 are rotated to be washed by water; after entering the leacheate treatment mechanism 5, the leacheate is subjected to neutralization operation, a neutralization material is added and then fully stirred by the stirring blade 513, after the neutralization operation is completed, the leacheate enters the electrolytic cell 52 for electrolysis operation to separate heavy metals, after the electrolysis operation is completed, the leacheate enters the reservoir 53, and workers perform treatment; the water for cleaning the rotary inner roller 33 and the outer cylinder 34 enters the leacheate treatment mechanism 5, the neutralization operation and the electrolysis operation are carried out in the same way, the water enters the reservoir 53 and then enters the connecting pipe 54 again through the circulating water pipe 55, the operation is repeated for a plurality of times so as to further reduce the heavy metal content in the water, and meanwhile, the leacheate treatment mechanism 5 can be cleaned through the operation for a plurality of times; the staff can also carry out repeated operation many times to the leacheate to reduce the heavy metal content in the leacheate.
A heavy metal contaminated soil remediation method is realized according to the following steps:
the method comprises the following steps: loading the soil to be restored into the soil crushing mechanism 2, and crushing the soil by the soil crushing mechanism 2;
step two: the soil crushed by the soil crushing mechanism 2 is filtered by the soil filtering mechanism 6, larger pieces of soil are intercepted, and smaller pieces of soil enter the soil leaching mechanism 3;
step three: the soil entering the soil leaching mechanism 3 is leached by the leacheate, the soil is discharged through the soil discharge mechanism 4, and the leacheate enters the leacheate treatment mechanism 5; meanwhile, the soil leaching mechanism 3 is washed by water;
step four: the leacheate enters an acid-base neutralization tank 51 through a connecting pipe 54, a worker puts in a neutralization material from a feeding port 512, and the neutralization material is stirred by a stirring blade 513 and enters an electrolytic tank 52 after being neutralized;
step five: the driving battery 5224 supplies power to the electrolysis device 5221, and the liquid in the second tank body 521 is electrolyzed and enters the water storage tank 53 after the electrolysis operation is finished;
step six: the staff member discharges the liquid in the reservoir 53; meanwhile, water after cleaning the soil leaching mechanism 3 enters a leaching solution treatment mechanism 5 and is operated according to the methods of the fourth step and the fifth step;
step seven: and the water entering the water reservoir 53 enters the acid-base neutralization tank 51 again through the circulating water pipe 55, the step six is repeated for multiple times, and the staff discharges the water in the water reservoir 53.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a heavy metal contaminated soil repairing machine, includes organism outer wall (1), its characterized in that: the opening part of organism outer wall (1) is provided with soil crushing mechanism (2) that are used for pounding soil to pieces, still be provided with soil drip washing mechanism (3) that are used for drip washing soil in organism outer wall (1), organism outer wall (1) in soil drip washing mechanism (3) are kept away from the one end of soil crushing mechanism (2) is provided with soil discharge mechanism (4) that are used for discharging drip washing back soil, organism outer wall (1) in one side of soil drip washing mechanism (3) is provided with leachate treatment mechanism (5) that are used for handling the leachate.
2. The heavy metal contaminated soil remediation machine of claim 1, wherein: the leacheate treatment mechanism (5) comprises an acid-base neutralization tank (51), an electrolytic cell (52) and a water storage tank (53), wherein the acid-base neutralization tank (51) is communicated with the soil leaching mechanism (3) through a connecting pipe (54), one end, away from the connecting pipe (54), of the acid-base neutralization tank (51) is communicated with the electrolytic cell (52), and one end, away from the acid-base neutralization tank (51), of the electrolytic cell (52) is communicated with the water storage tank (53).
3. The heavy metal contaminated soil remediation machine of claim 2, wherein: the water storage tank (53) is communicated with a circulating water pipe (55), and one end, far away from the water storage tank (53), of the circulating water pipe (55) is communicated with the connecting pipe (54).
4. The heavy metal contaminated soil remediation machine of claim 3, wherein: the acid-base neutralization tank (51) comprises a first tank body (511), a feeding port (512) and stirring blades (513), wherein the feeding port (512) is positioned at the top end of the first tank body (511), and the stirring blades (513) are positioned in the first tank body (511).
5. The heavy metal contaminated soil remediation machine of claim 4, wherein: and a driving motor (514) is arranged at the top end of the first tank body (511) of the stirring blade (513).
6. The heavy metal contaminated soil remediation machine of claim 2, wherein: the electrolytic cell (52) comprises a second cell body (521) and an electrolytic mechanism (522) for electrolyzing liquid, wherein the electrolytic mechanism (522) comprises an electrolytic device (5221), an anode (5222), a cathode (5223) and a driving battery (5224), the electrolytic device (5221) is positioned at the top end of the second cell body (521), the anode (5222) and the cathode (5223) are both connected with the electrolytic device (5221), one ends of the anode (5222) and the cathode (5223), which are far away from the electrolytic device (5221), are positioned in the second cell body (521), and the driving battery (5224) is used for supplying power to the electrolytic device (5221).
7. The heavy metal contaminated soil remediation machine and method of claim 1, wherein: and a soil filtering mechanism (6) used for intercepting larger pieces of soil is also arranged between the soil crushing mechanism (2) and the soil leaching mechanism (3).
8. A heavy metal contaminated soil remediation method is characterized by comprising the following steps: the method is realized according to the following steps:
the method comprises the following steps: loading the soil to be restored into the soil crushing mechanism (2), and crushing the soil by the soil crushing mechanism (2);
step two: the soil crushed by the soil crushing mechanism (2) is filtered by the soil filtering mechanism (6), larger pieces of soil are intercepted, and smaller pieces of soil enter the soil leaching mechanism (3);
step three: the soil entering the soil leaching mechanism (3) is leached by the leacheate, the soil is discharged through the soil discharging mechanism (4), and the leacheate enters the leacheate processing mechanism (5); meanwhile, the soil leaching mechanism (3) is washed by water;
step four: the leacheate enters an acid-base neutralization tank (51) through a connecting pipe (54), and a worker puts a neutralization material from a feeding port (512), stirs the neutralization material through a stirring blade (513), and enters an electrolytic tank (52) after the neutralization is achieved;
step five: a driving battery (5224) supplies power to the electrolysis device (5221), and the liquid in the second tank body (521) is electrolyzed and enters the reservoir (53) after the electrolysis operation is finished;
step six: the staff discharges the liquid in the reservoir (53); meanwhile, water after the soil leaching mechanism (3) is cleaned enters a leaching solution treatment mechanism (5), and the operation is carried out according to the method of the fourth step and the method of the fifth step;
step seven: and the water entering the reservoir (53) enters the acid-base neutralization tank (51) again through the circulating water pipe (55), the step six is repeated for multiple times, and the staff discharges the water in the reservoir (53).
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| CN114405985A (en) * | 2022-01-06 | 2022-04-29 | 江苏伟恒土壤治理科技有限公司 | Electro-catalysis spraying spinning polluted soil crushing and repairing equipment |
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Application publication date: 20200526 |