CN111136096A - Soil remediation system and remediation method thereof - Google Patents
Soil remediation system and remediation method thereof Download PDFInfo
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- CN111136096A CN111136096A CN202010058202.7A CN202010058202A CN111136096A CN 111136096 A CN111136096 A CN 111136096A CN 202010058202 A CN202010058202 A CN 202010058202A CN 111136096 A CN111136096 A CN 111136096A
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- sedimentation tank
- soil
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- block
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0856—Cleaning of water-treatment installations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a soil remediation system and a remediation method thereof, wherein the soil remediation system comprises crushing equipment, vibration screening equipment, stone washing equipment, a sedimentation tank, filtering equipment and stirring equipment which are sequentially connected, wherein a first cleaning device is arranged in the sedimentation tank, and comprises a plurality of reciprocating lead screws, a cleaning frame and a plurality of first bristles; the cleaning frame is annular, one end of the first brush hair is abutted against the inner wall of the sedimentation tank, and the top of the sedimentation tank is provided with a driving mechanism; the cleaning frame is provided with a second cleaning device, and the second cleaning device comprises an installation frame fixedly connected to the top of the cleaning frame, a rotating block rotatably connected to the bottom of the installation frame, and a first pneumatic motor vertically arranged on the top of the installation frame and used for driving the rotating block to rotate; the output shaft of the first pneumatic motor is vertically downwards fixedly connected with the top of the rotating block, the cleaning block is installed at the bottom of the rotating block, and a plurality of second bristles are installed at the bottom of the cleaning block. The invention is convenient for cleaning the inner wall of the sedimentation tank.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to a soil remediation system and a remediation method thereof.
Background
According to the national soil pollution survey bulletin issued by the ministry of environmental protection and the ministry of national resources 2014 in 4 months, the national soil environment is generally not optimistic, the soil pollution in partial areas is serious, the quality of the cultivated land soil environment is great, and the industrial and mining waste gas land environment problem is prominent. The pollution types are mainly inorganic and mainly comprise chromium, cadmium, mercury, arsenic, lead, copper, zinc, nickel and the like. Soil pollution not only causes serious harm to the ecological environment and human health, but also hinders the development of economy in China.
In the prior art, reference may be made to chinese patent invention with an authorization publication No. CN104226678B, which discloses a device in a heavy metal contaminated soil remediation method, including a crushing device, a vibrating screening device, a stone washing device, a sedimentation tank, a leaching device, and a stirring device, which are connected in sequence, wherein an output end of the crushing device is connected with an input end of the vibrating screening device, an output end of the vibrating screening device is connected with an input end of the stone washing device, an output end of the stone washing device is connected with an input end of the sedimentation tank, an output end of the sedimentation tank is connected with an input end of the leaching device, an output end of the leaching device is connected with an input end of the stirring device, and an input end of the stirring device is connected with an output end of the vibrating screening device.
The above prior art solutions have the following drawbacks: the liquid in the sedimentation tank generally settles for a long time, so that impurities are easy to attach to the inner wall of the sedimentation tank, and the equipment is inconvenient for cleaning the inner wall of the sedimentation tank.
Disclosure of Invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a soil remediation system that facilitates cleaning of the interior walls of a settling tank.
The above object of the present invention is achieved by the following technical solutions:
a soil remediation system comprises crushing equipment, vibrating screening equipment, stone washing equipment, a sedimentation tank, filtering removal equipment and stirring equipment which are sequentially connected, wherein a first cleaning device for cleaning the side wall of the sedimentation tank is arranged in the sedimentation tank, and comprises a plurality of reciprocating lead screws rotatably connected to the bottom of the sedimentation tank, a cleaning frame which is in threaded connection with the reciprocating lead screws and slides vertically, and a plurality of first bristles fixedly connected to the outer peripheral surface of the cleaning frame; the cleaning frame is annular, one end of the first bristles, which is far away from the cleaning frame, is abutted against the inner wall of the sedimentation tank, and a driving mechanism for driving the reciprocating screw rods to rotate is mounted at the top of the sedimentation tank; the cleaning frame is provided with a second cleaning device for cleaning the bottom of the sedimentation tank, and the second cleaning device comprises an installation frame fixedly connected to the top of the cleaning frame, a rotating block rotatably connected to the bottom of the installation frame and a first pneumatic motor vertically arranged on the top of the installation frame and used for driving the rotating block to rotate; the output shaft of the first pneumatic motor is vertically and downwards fixedly connected with the top of the rotating block, the bottom of the rotating block is provided with a cleaning block, and the bottom of the cleaning block is provided with a plurality of second bristles.
By adopting the technical scheme, the driving mechanism drives the reciprocating screw rods to rotate, the reciprocating screw rods rotate to drive the cleaning frame to move vertically, and the cleaning frame moves vertically to drive the first bristles to move vertically, so that the side wall of the sedimentation tank can be cleaned; when the bottom of the sedimentation tank needs to be cleaned, the second bristles are contacted with the bottom of the sedimentation tank by moving to the cleaning frame, then the rotating block is driven to rotate by the output shaft of the first pneumatic motor, the rotating block drives the cleaning block to rotate, and the cleaning block drives the second bristles to rotate, so that the bottom of the sedimentation tank can be cleaned; in conclusion, through setting up first cleaning device and second cleaning device, be convenient for clear up the inner wall of sedimentation tank.
The present invention in a preferred example may be further configured to: the driving mechanism comprises a fixed frame arranged at the top of the sedimentation tank, a driving motor vertically arranged at the top of the fixed frame and a main gear sleeved and fixed on an output shaft of the driving motor; and a driven gear is fixedly sleeved on the top of each reciprocating lead screw and meshed with the main gear.
By adopting the technical scheme, the driving motor is started, the output shaft of the driving motor drives the main gear to rotate, the main gear rotates to drive the driven gear to rotate, and the driven gear rotates to drive the reciprocating screw to rotate; through setting up actuating mechanism, be convenient for drive a plurality of reciprocating screw and rotate.
The present invention in a preferred example may be further configured to: the cleaning device is characterized in that the rotating block is provided with a plurality of channels, a vertical rod is connected in each channel in a vertical sliding manner, the bottom of each vertical rod is fixedly connected to the top of the cleaning block, a limiting block is fixedly connected to the top of each vertical rod, a sliding groove for the limiting block to slide vertically is formed in each channel, a spring is sleeved on each vertical rod, one end of each spring is fixedly connected to the bottom of the corresponding sliding groove, and the other end of each spring is fixedly connected to the bottom of the corresponding limiting block; a plurality of the stopper collineation sets up, install the drive mechanism who is used for driving the stopper and moves down on changeing the piece, correspond the passageway is in change the top of piece and install and be used for carrying out the fixed establishment to the stopper.
By adopting the technical scheme, the fixing mechanism is arranged, so that the limiting block can be conveniently fixed, and the second bristles can conveniently clean the bottom of the sedimentation tank; when sundries on the second bristles need to be vibrated down, the limiting block is loosened through the fixing mechanism and resets under the action of the spring, and then the limiting block reciprocates under the action of the transmission mechanism and the spring, so that the sundries on the second bristles are vibrated down conveniently.
The present invention in a preferred example may be further configured to: the fixing mechanism comprises an air cylinder horizontally arranged at the top of the rotating block and a push block fixedly connected to a piston rod of the air cylinder; and a matching component for driving the limiting block to move downwards is arranged between the push block and the limiting block.
By adopting the technical scheme, the air cylinder is started, the piston rod of the air cylinder drives the push block to move towards the direction close to the limiting block, at the moment, the push block drives the limiting block to move downwards under the action of the matching component, then, the push block continues to move, and at the moment, the limiting block can be limited in the sliding groove; through setting up fixed establishment, be convenient for fix the stopper.
The present invention in a preferred example may be further configured to: the matching assembly comprises two inclined planes which are respectively arranged on the opposite inner sides of the push block and the limiting block, and the two inclined planes are matched.
By adopting the technical scheme, the push block can drive the limiting block to move downwards by arranging the inclined plane.
The present invention in a preferred example may be further configured to: the transmission mechanism comprises a second pneumatic motor horizontally arranged at the top of the rotating block, a horizontal shaft fixedly connected to an output shaft of the second pneumatic motor and rotatably connected to the top of the rotating block, and cams sequentially sleeved and fixed on the outer side wall of the horizontal shaft along the axial direction of the horizontal shaft; the limiting blocks can be abutted to the bottoms of the cams in a one-to-one correspondence mode.
By adopting the technical scheme, the output shaft of the second pneumatic motor drives the horizontal shaft to rotate, the horizontal shaft rotates to drive the cam to rotate, and the cam rotates to drive the limiting block to move downwards; through setting up drive mechanism, be convenient for drive stopper and remove downwards.
The present invention in a preferred example may be further configured to: the cleaning device comprises a water spraying mechanism and a sewage draining pipe; the water spraying mechanism comprises an annular pipe fixedly connected to the outer side of the top of the sedimentation tank, a plurality of connecting pipes which are fixedly connected to the inner circumferential surface of the annular pipe along the circumferential direction of the annular pipe and are obliquely arranged, and a water inlet pipe communicated with the annular pipe; one end, far away from the annular pipe, of each connecting pipe is communicated with the sedimentation tank, a water supply pump is arranged at one end, far away from the annular pipe, of each connecting pipe, an inlet of each water supply pump is communicated with a water supply pipe, one end, far away from the water supply pump, of each water supply pipe is communicated with a water tank, the top of each water tank is communicated with a water supplementing pipe, and a first manual valve is mounted on each water supplementing pipe; one end of the drain pipe is communicated with the bottom of the sedimentation tank, the other end of the drain pipe is communicated with the wastewater treatment mechanism, and a second manual valve is installed on the drain pipe.
By adopting the technical scheme, the water supply pump is started, and water in the water tank sequentially passes through the water supply pipe, the water supply pump, the water inlet pipe and the annular pipe and then is sprayed to the inner wall of the sedimentation tank from the connecting pipe, so that the inner wall of the sedimentation tank can be cleaned; through setting up belt cleaning device, be convenient for wash the inner wall of sedimentation tank.
The present invention in a preferred example may be further configured to: a plurality of electric heating wires are installed on one side of the water tank, the cleaning agent tank is communicated with the water supply pipe, a first electric valve is installed on the water supply pipe, and the first electric valve is located between the cleaning agent tank and the water tank; the top of the detergent box is communicated with a supply pipe, one end of the supply pipe, which is far away from the detergent box, is communicated with a detergent source, and a second electric valve is arranged on the supply pipe; and a stirring component is arranged in the cleaning agent box.
Through adopting above-mentioned technical scheme, heat the water in the water tank through the electric heat wire, then start first motorised valve and second motorised valve, water and sanitizer get into the sanitizer incasement, next stir sanitizer and water through stirring the subassembly to alright stir water and sanitizer evenly, therefore be convenient for wash the sedimentation tank.
The present invention in a preferred example may be further configured to: the stirring assembly comprises a stirring shaft vertically and rotatably connected in the detergent box, a plurality of stirring paddles fixedly connected to the outer side wall of the stirring shaft and a stirring motor vertically arranged at the top of the detergent box; and an output shaft of the stirring motor is vertically and downwards fixedly connected with the top of the stirring shaft.
Through adopting above-mentioned technical scheme, start agitator motor, agitator motor's output shaft drive (mixing) shaft rotates, and the (mixing) shaft rotates drive stirring rake and rotates to alright stir water and sanitizer.
In view of the shortcomings of the prior art, it is another object of the present invention to provide a method for soil remediation.
The above object of the present invention is achieved by the following technical solutions:
a method of soil remediation comprising the steps of: (1) setting a soil temporary storage area, tamping the bottom of the soil temporary storage area, paving an anti-seepage film or an anti-seepage cloth, and placing the excavated polluted soil to be repaired on the anti-seepage film or the anti-seepage cloth of the soil temporary storage area; (2) crushing soil blocks of soil to be restored by using crushing equipment; (3) sending the crushed soil into a vibrating screening device, separating sundries in the soil from the soil, dropping the screened soil on the lower part of the vibrating screening device, and separating concrete, bricks and stone sundries in the soil on the upper part of a screen mesh; (4) sending sundries in the soil into stone washing equipment for water washing, and washing the soil attached to the sundries; (5) discharging the muddy water eluted from the soil in the step (4) into a sedimentation tank, separating silt and water under the action of sedimentation, discharging supernatant liquid precipitated in the sedimentation tank into a sewage pipe network or connecting the supernatant liquid into sewage treatment equipment for further treatment, feeding the settled silt at the lower part of the sedimentation tank into a filtering and dewatering equipment for dewatering and filtering to form filter residues, and discharging the filtered water into the sedimentation tank for recycling; then cleaning the sedimentation tank: the output shaft of the driving motor drives the main gear to rotate, the main gear drives the driven gear to rotate, the driven gear drives the reciprocating lead screw to rotate, the reciprocating lead screw rotates to drive the cleaning frame to move vertically, and the cleaning frame moves vertically to drive the first bristles to move vertically, so that the side wall of the sedimentation tank can be cleaned; when the bottom of the sedimentation tank needs to be cleaned, the second bristles are contacted with the bottom of the sedimentation tank by moving to the cleaning frame, then the rotating block is driven to rotate by the output shaft of the first pneumatic motor, the rotating block drives the cleaning block to rotate, and the cleaning block drives the second bristles to rotate, so that the bottom of the sedimentation tank can be cleaned; next, separating the second bristles from the bottom of the sedimentation tank by moving the cleaning frame, closing the air cylinder, driving the push block to reset by a piston rod of the air cylinder, resetting the limit block under the action of the spring and enabling the limit block to abut against the bottom of the cam after the push block resets, starting the second pneumatic motor, driving the cam to rotate by an output shaft of the second pneumatic motor, driving the limit block to reciprocate by the rotation of the cam, and driving the cleaning block to reciprocate by the reciprocating movement of the limit block, so that sundries on the second bristles can be vibrated down; then opening the first electric valve and the second electric valve to enable water and detergent to enter the detergent box, closing the first electric valve and the second electric valve after a proper amount of water and detergent enters the detergent box, then driving the stirring shaft to rotate through the output shaft of the stirring motor, and driving the stirring paddle to rotate through the rotation of the stirring shaft, so that the detergent and the water can be uniformly mixed; then starting the first electric valve and the water supply pump, and spraying hot water in the water tank to the inner wall of the sedimentation tank from the connecting pipe after sequentially passing through the detergent tank, the water supply pump and the annular pipe, so that the inner wall of the sedimentation tank can be cleaned; (6) feeding the filter residue obtained after the dehydration and filtration in the step (5) and the polluted soil obtained after the sieving in the step (3) into a stirring device, adding a heavy metal stabilizer and clear water into the stirring device, and uniformly stirring the polluted soil, the filter residue and the heavy metal stabilizer to enable the heavy metal stabilizer to react with the polluted soil; (7) and (4) maintaining the soil treated in the step (6), covering and standing the soil by using woven bags, plastic films, geotextiles or straw mats during maintenance, wherein the maintenance time is more than or equal to 2 days, and the soil is kept moist during maintenance.
Through adopting above-mentioned technical scheme, be convenient for clear up the inner wall of sedimentation tank.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the driving mechanism drives the reciprocating screw rods to rotate, the reciprocating screw rods rotate to drive the cleaning frame to move vertically, and the cleaning frame moves vertically to drive the first bristles to move vertically, so that the side wall of the sedimentation tank can be cleaned; when the bottom of the sedimentation tank needs to be cleaned, the second bristles are contacted with the bottom of the sedimentation tank by moving to the cleaning frame, then the rotating block is driven to rotate by the output shaft of the first pneumatic motor, the rotating block drives the cleaning block to rotate, and the cleaning block drives the second bristles to rotate, so that the bottom of the sedimentation tank can be cleaned; in conclusion, the inner wall of the sedimentation tank is convenient to clean by arranging the first cleaning device and the second cleaning device;
2. the output shaft of the second pneumatic motor drives the horizontal shaft to rotate, the horizontal shaft rotates to drive the cam to rotate, and the cam rotates to drive the limiting block to move downwards; the transmission mechanism is arranged, so that the limiting block is driven to move downwards conveniently;
3. the water in the water tank is heated through the electric heating wire, then the first electric valve and the second electric valve are started, the water and the cleaning agent enter the cleaning agent tank, and then the cleaning agent and the water are stirred through the stirring assembly, so that the water and the cleaning agent can be uniformly stirred, and the sedimentation tank is convenient to clean.
Drawings
FIG. 1 is a schematic view showing the structure of a sedimentation tank in the embodiment;
FIG. 2 is a schematic view showing a first cleaning apparatus according to an embodiment;
FIG. 3 is a schematic view showing a second cleaning device according to an embodiment;
FIG. 4 is a partial cross-sectional view of a salient spring of an embodiment;
FIG. 5 is a partial cross-sectional view of a highlighted stirring assembly in an embodiment.
In the figure, 10, crushing plant; 11. a vibratory screening device; 12. stone washing equipment; 13. a sedimentation tank; 14. a de-filtration device; 15. a stirring device; 2. a first cleaning device; 21. a reciprocating screw; 22. cleaning the frame; 23. a first bristle; 24. a drive mechanism; 241. a fixed mount; 242. a drive motor; 243. a main gear; 244. a slave gear; 3. a second cleaning device; 31. a mounting frame; 32. rotating the block; 321. a channel; 322. a vertical rod; 323. a limiting block; 324. a chute; 325. a spring; 33. a first pneumatic motor; 34. a cleaning block; 35. a second bristle; 4. a fixing mechanism; 41. a cylinder; 42. a push block; 43. a bevel; 5. a transmission mechanism; 51. a second pneumatic motor; 52. a horizontal axis; 53. a cam; 6. a cleaning device; 61. a blow-off pipe; 611. a second manual valve; 7. a water spraying mechanism; 71. an annular tube; 72. a connecting pipe; 73. a water inlet pipe; 74. a water supply pump; 75. a water supply pipe; 751. a first electrically operated valve; 76. a water tank; 761. a water replenishing pipe; 762. a first manual valve; 77. a detergent tank; 771. a supply tube; 772. a second electrically operated valve; 78. a stirring assembly; 781. a stirring shaft; 782. a stirring paddle; 783. a stirring motor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the soil remediation system comprises a crushing device 10, a vibrating screening device 11, a stone washing device 12, a sedimentation tank 13, a filtering device 14 and a stirring device 15 which are connected in sequence, wherein a first cleaning device 2 for cleaning the side wall of the sedimentation tank 13 is arranged in the sedimentation tank 13, and a second cleaning device 3 for cleaning the bottom of the sedimentation tank 13 is arranged on a cleaning frame 22.
The first cleaning device 2 comprises a plurality of reciprocating lead screws 21 which are rotatably connected to the bottom of the sedimentation tank 13 through bearings, a cleaning frame 22 which is in threaded connection with the reciprocating lead screws 21 and slides vertically, and a plurality of first bristles 23 which are fixedly connected to the peripheral surface of the cleaning frame 22; the shape of the cleaning frame 22 is annular, one end of the first brush 23 far away from the cleaning frame 22 is abutted against the inner wall of the sedimentation tank 13, and the top of the sedimentation tank 13 is provided with a driving mechanism 24 for driving the reciprocating screw rods 21 to rotate. The driving mechanism 24 drives the reciprocating screw rods 21 to rotate, the reciprocating screw rods 21 drive the cleaning frame 22 to move vertically, and the cleaning frame 22 moves vertically to drive the first bristles 23 to move vertically, so that the side wall of the sedimentation tank 13 can be cleaned; through setting up first cleaning device 2, be convenient for clear up the lateral wall of sedimentation tank 13.
The driving mechanism 24 comprises a fixing frame 241 arranged at the top of the sedimentation tank 13, a driving motor 242 vertically arranged at the top of the fixing frame 241 and a main gear 243 sleeved and fixed on an output shaft of the driving motor 242; a driven gear 244 is sleeved and fixed on the top of each reciprocating screw 21, and the driven gear 244 is meshed with the main gear 243. The driving motor 242 is started, the output shaft of the driving motor 242 drives the main gear 243 to rotate, the main gear 243 rotates to drive the driven gear 244 to rotate, and the driven gear 244 rotates to drive the reciprocating screw 21 to rotate; by providing the driving mechanism 24, it is convenient to drive the plurality of reciprocating screws 21 to rotate.
As shown in fig. 2 and 3, the second cleaning device 3 includes a mounting frame 31 fixedly connected to the top of the cleaning frame 22, a rotating block 32 rotatably connected to the bottom of the mounting frame 31 through a bearing, and a first pneumatic motor 33 vertically mounted on the top of the mounting frame 31 for driving the rotating block 32 to rotate; an output shaft of the first pneumatic motor 33 is vertically and downwards fixedly connected with the top of the rotary block 32, a cleaning block 34 is installed at the bottom of the rotary block 32, and a plurality of second bristles 35 are installed at the bottom of the cleaning block 34. When the bottom of the sedimentation tank 13 needs to be cleaned, the second bristles 35 are contacted with the bottom of the sedimentation tank 13 by moving to the cleaning frame 22, then the rotating block 32 is driven to rotate by the output shaft of the first pneumatic motor 33, the rotating block 32 drives the cleaning block 34 to rotate by rotating, and the cleaning block 34 drives the second bristles 35 to rotate by rotating, so that the bottom of the sedimentation tank 13 can be cleaned; through setting up second cleaning device 3, be convenient for clear up the bottom of sedimentation tank 13.
As shown in fig. 3 and 4, the rotating block 32 is provided with a plurality of channels 321, each channel 321 is connected with a vertical rod 322 in a vertical sliding manner, the bottom of each vertical rod 322 is fixedly connected to the top of the cleaning block 34, the top of each vertical rod 322 is fixedly connected with a limiting block 323, a sliding groove 324 for allowing the limiting block 323 to slide in the vertical direction is formed in each channel 321, the vertical rod 322 is sleeved with a spring 325, one end of the spring 325 is fixedly connected to the bottom of the sliding groove 324, and the other end of the spring 325 is fixedly connected to the bottom of the limiting block; the plurality of limit blocks 323 are arranged in a collinear manner, the rotating block 32 is provided with a transmission mechanism 5 for driving the limit blocks 323 to move downwards, and the corresponding channel 321 is provided with a fixing mechanism 4 for fixing the limit blocks 323 at the top of the rotating block 32. The fixing mechanism 4 is arranged, so that the limiting block 323 can be conveniently fixed, and the second bristles 35 can conveniently clean the bottom of the sedimentation tank 13; when sundries on the second bristles 35 need to be vibrated down, the limiting block 323 is loosened through the fixing mechanism 4, the limiting block 323 resets under the action of the spring 325 at the moment, and then the limiting block 323 does reciprocating movement under the action of the transmission mechanism 5 and the spring 325, so that the sundries on the second bristles 35 are vibrated down conveniently.
The fixing mechanism 4 comprises an air cylinder 41 horizontally arranged at the top of the rotating block 32 and a push block 42 fixedly connected to a piston rod of the air cylinder 41; a matching component for driving the limiting block 323 to move downwards is arranged between the pushing block 42 and the limiting block 323, the matching component comprises two inclined planes 43 respectively arranged on the opposite inner sides of the pushing block 42 and the limiting block 323, and the two inclined planes 43 are matched. Starting the air cylinder 41, driving the push block 42 to move towards the direction close to the limit block 323 by a piston rod of the air cylinder 41, driving the limit block 323 to move downwards by the push block 42 under the action of the inclined surface 43, and then continuing to move the push block 42, so that the limit block 323 can be limited in the chute 324; by arranging the fixing mechanism 4, the limiting block 323 can be fixed conveniently.
The transmission mechanism 5 comprises a second pneumatic motor 51 horizontally mounted on the top of the rotating block 32, a horizontal shaft 52 fixedly connected to an output shaft of the second pneumatic motor 51 and rotatably connected to the top of the rotating block 32 through a bearing, and a cam 53 sequentially sleeved and fixed on the outer side wall of the horizontal shaft 52 along the axial direction of the horizontal shaft 52; the stoppers 323 can abut against the bottom of the cam 53 in a one-to-one correspondence. The output shaft of the second pneumatic motor 51 drives the horizontal shaft 52 to rotate, the horizontal shaft 52 rotates to drive the cam 53 to rotate, and the cam 53 rotates to drive the limiting block 323 to move downwards; by arranging the transmission mechanism 5, the limiting block 323 can be driven to move downwards conveniently.
As shown in fig. 2 and 5, a cleaning device 6 is arranged outside the sedimentation tank 13, and the cleaning device 6 comprises a water spraying mechanism 7 and a sewage discharge pipe 61; the water spraying mechanism 7 comprises an annular pipe 71 fixedly connected to the outer side of the top of the sedimentation tank 13, a plurality of connecting pipes 72 which are fixedly connected to the inner circumferential surface of the annular pipe 71 along the circumferential direction of the annular pipe 71 and are obliquely arranged, and a water inlet pipe 73 communicated with the annular pipe 71; the connecting pipes 72 are provided with a plurality of rows, one end of each connecting pipe 72, which is far away from the annular pipe 71, is communicated with the sedimentation tank 13, one end of each connecting pipe 72, which is far away from the annular pipe 71, is provided with a water supply pump 74, the inlet of the water supply pump 74 is communicated with a water supply pipe 75, one end of the water supply pipe 75, which is far away from the water supply pump 74, is communicated with a water tank 76, the top of the water tank 76 is communicated with a water replenishing pipe 761, and a; one end of the drain pipe 61 is communicated with the bottom of the sedimentation tank 13, the other end is communicated with the wastewater treatment mechanism, and a second manual valve 611 is arranged on the drain pipe 61. The water supply pump 74 is started, and the water in the water tank 76 passes through the water supply pipe 75, the water supply pump 74, the water inlet pipe 73 and the annular pipe 71 in sequence and then is sprayed to the inner wall of the sedimentation tank 13 from the connecting pipe 72, so that the inner wall of the sedimentation tank 13 can be cleaned; through setting up belt cleaning device 6, be convenient for wash the inner wall of sedimentation tank 13.
A plurality of heating wires (not shown) are installed at one side of the water tank 76, the detergent tank 77 is communicated with the water supply pipe 75, the first electric valve 751 is installed on the water supply pipe 75, and the first electric valve 751 is positioned between the detergent tank 77 and the water tank 76; the cleanser can be selected from a cleanser, the top of the cleanser box 77 is communicated with a supply pipe 771, one end of the supply pipe 771, which is far away from the cleanser box 77, is communicated with a cleanser source, and the supply pipe 771 is provided with a second electric valve 772; an agitation assembly 78 is installed in the detergent tank 77. The water in the water tank 76 is heated by the electric heating wire, and then the first electric valve 751 and the second electric valve 772 are actuated, the water and the detergent are introduced into the detergent tank 77, and then the detergent and the water are stirred by the stirring assembly 78, so that the water and the detergent can be uniformly stirred, thereby facilitating the washing of the sedimentation tank 13.
The stirring assembly 78 comprises a stirring shaft 781 vertically and rotatably connected in the detergent box 77 through a bearing, a plurality of stirring paddles 782 fixedly connected to the outer side wall of the stirring shaft 781, and a stirring motor 783 vertically installed at the top of the detergent box 77; an output shaft of the stirring motor 783 is vertically and downwards fixedly connected with the top of the stirring shaft 781. Starting stirring motor 783, stirring motor 783's output shaft drive (mixing) shaft 781 rotates, (mixing) shaft 781 rotates drive stirring rake 782 and rotates to alright stir water and sanitizer.
A method of soil remediation comprising the steps of:
(1) setting a soil temporary storage area, tamping the bottom of the soil temporary storage area, paving an anti-seepage film or an anti-seepage cloth, and placing the excavated polluted soil to be repaired on the anti-seepage film or the anti-seepage cloth of the soil temporary storage area;
(2) crushing soil blocks of soil to be restored by using crushing equipment 10;
(3) sending the crushed soil into a vibrating screening device 11, separating sundries in the soil from the soil, dropping the screened soil on the lower part of the vibrating screening device 11, and separating concrete, bricks and stone sundries in the soil on the upper part of a screen mesh;
(4) sending sundries in the soil into a stone washing device 12 for water washing, and washing the soil attached to the sundries;
(5) discharging the muddy water eluted from the soil in the step (4) into a sedimentation tank 13, separating silt and water through the action of sedimentation, discharging the supernatant liquid precipitated in the sedimentation tank 13 into a sewage pipe network or connecting the supernatant liquid into sewage treatment equipment for further treatment, feeding the precipitated mud at the lower part of the sedimentation tank 13 into a filtering and dewatering equipment 14 for dewatering and filtering to form filter residues, and discharging the filtered water into the sedimentation tank 13 for recycling;
then the sedimentation tank 13 is cleaned: the main gear 243 is driven to rotate by an output shaft of the driving motor 242, the main gear 243 drives the driven gear 244 to rotate, the driven gear 244 drives the reciprocating lead screw 21 to rotate, the reciprocating lead screw 21 drives the cleaning frame 22 to move vertically, and the cleaning frame 22 drives the first bristles 23 to move vertically by moving vertically, so that the side wall of the sedimentation tank 13 can be cleaned; when the bottom of the sedimentation tank 13 needs to be cleaned, the second bristles 35 are contacted with the bottom of the sedimentation tank 13 by moving to the cleaning frame 22, then the rotating block 32 is driven to rotate by the output shaft of the first pneumatic motor 33, the rotating block 32 drives the cleaning block 34 to rotate by rotating, and the cleaning block 34 drives the second bristles 35 to rotate by rotating, so that the bottom of the sedimentation tank 13 can be cleaned; next, the second brush 35 is separated from the bottom of the sedimentation tank 13 by moving the cleaning frame 22, then the cylinder 41 is closed, the piston rod of the cylinder 41 drives the push block 42 to reset, after the push block 42 resets, the limit block 323 resets under the action of the spring 325 and the limit block 323 abuts against the bottom of the cam 53, then the second pneumatic motor 51 is started, the output shaft of the second pneumatic motor 51 drives the cam 53 to rotate, the cam 53 rotates to drive the limit block 323 to reciprocate, and the limit block 323 reciprocates to drive the cleaning block 34 to reciprocate, so that sundries on the second brush 35 can be vibrated down; then the first electric valve 751 and the second electric valve 772 are opened to allow water and detergent to enter the detergent tank 77, after a proper amount of water and detergent enters the detergent tank 77, the first electric valve 751 and the second electric valve 772 are closed, then the stirring shaft 781 is driven to rotate through the output shaft of the stirring motor 783, and the stirring shaft 781 rotates to drive the stirring paddle 782 to rotate, so that the detergent and the water can be uniformly mixed; next, the first electric valve 751 and the water supply pump 74 are activated, and at this time, the hot water in the water tank 76 is sprayed to the inner wall of the sedimentation tank 13 from the connection pipe 72 after passing through the detergent tank 77, the water supply pump 74 and the annular pipe 71 in sequence, so that the inner wall of the sedimentation tank 13 can be cleaned;
(6) conveying the filter residue obtained after the dehydration and filtration in the step (5) and the polluted soil obtained after the sieving in the step (3) into a stirring device 15, adding a heavy metal stabilizer and clear water into the stirring device 15, and uniformly stirring the polluted soil, the filter residue and the heavy metal stabilizer to enable the heavy metal stabilizer to react with the polluted soil;
(7) and (4) maintaining the soil treated in the step (6), covering and standing the soil by using woven bags, plastic films, geotextiles or straw mats during maintenance, wherein the maintenance time is more than or equal to 2 days, and the soil is kept moist during maintenance.
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 (10)
1. The utility model provides a soil remediation system, includes crushing equipment (10), vibratory screening equipment (11), stone washing equipment (12), sedimentation tank (13), takes off and strains equipment (14) and agitated vessel (15) that link to each other in proper order, its characterized in that: a first cleaning device (2) used for cleaning the side wall of the sedimentation tank (13) is arranged in the sedimentation tank (13), and the first cleaning device (2) comprises a plurality of reciprocating lead screws (21) rotatably connected to the bottom of the sedimentation tank (13), a cleaning frame (22) which is in threaded connection with the reciprocating lead screws (21) and slides vertically, and a plurality of first bristles (23) fixedly connected to the outer peripheral surface of the cleaning frame (22); the cleaning frame (22) is annular, one end, far away from the cleaning frame (22), of the first bristles (23) is abutted to the inner wall of the sedimentation tank (13), and a driving mechanism (24) for driving the reciprocating screw rods (21) to rotate is mounted at the top of the sedimentation tank (13);
the cleaning frame (22) is provided with a second cleaning device (3) for cleaning the bottom of the sedimentation tank (13), and the second cleaning device (3) comprises an installation frame (31) fixedly connected to the top of the cleaning frame (22), a rotating block (32) rotatably connected to the bottom of the installation frame (31), and a first pneumatic motor (33) vertically arranged at the top of the installation frame (31) and used for driving the rotating block (32) to rotate; an output shaft of the first pneumatic motor (33) is vertically and downwards fixedly connected with the top of the rotating block (32), the bottom of the rotating block (32) is provided with a cleaning block (34), and the bottom of the cleaning block (34) is provided with a plurality of second bristles (35).
2. A soil remediation system according to claim 1, wherein: the driving mechanism (24) comprises a fixed frame (241) arranged at the top of the sedimentation tank (13), a driving motor (242) vertically arranged at the top of the fixed frame (241) and a main gear (243) sleeved and fixed on an output shaft of the driving motor (242); and a driven gear (244) is sleeved and fixed on the top of each reciprocating lead screw (21), and the driven gear (244) is meshed with the main gear (243).
3. A soil remediation system according to claim 1, wherein: the cleaning device is characterized in that a plurality of channels (321) are formed in the rotating block (32), a vertical rod (322) is connected in each channel (321) in a sliding mode along the vertical direction, the bottom of each vertical rod (322) is fixedly connected to the top of the cleaning block (34), a limiting block (323) is fixedly connected to the top of each vertical rod (322), a sliding groove (324) for enabling the limiting block (323) to slide along the vertical direction is formed in each channel (321), a spring (325) is sleeved on each vertical rod (322), one end of each spring (325) is fixedly connected to the bottom of each sliding groove (324), and the other end of each spring (325) is fixedly connected to the bottom of each limiting; the limiting blocks (323) are arranged in a collinear mode, a transmission mechanism (5) used for driving the limiting blocks (323) to move downwards is installed on the rotating block (32), and a fixing mechanism (4) used for fixing the limiting blocks (323) is installed at the top of the rotating block (32) corresponding to the channel (321).
4. A soil remediation system according to claim 3, wherein: the fixing mechanism (4) comprises an air cylinder (41) horizontally arranged at the top of the rotating block (32) and a push block (42) fixedly connected to a piston rod of the air cylinder (41); and a matching component for driving the limiting block (323) to move downwards is arranged between the push block (42) and the limiting block (323).
5. A soil remediation system according to claim 4, wherein: the matching assembly comprises two inclined planes (43) which are respectively arranged on the opposite inner sides of the push block (42) and the limiting block (323), and the two inclined planes (43) are matched.
6. A soil remediation system according to claim 5, wherein: the transmission mechanism (5) comprises a second pneumatic motor (51) horizontally arranged at the top of the rotating block (32), a horizontal shaft (52) fixedly connected to an output shaft of the second pneumatic motor (51) and rotatably connected to the top of the rotating block (32), and a cam (53) sequentially sleeved and fixed on the outer side wall of the horizontal shaft (52) along the axial direction of the horizontal shaft (52); the limiting blocks (323) can be abutted to the bottoms of the cams (53) in a one-to-one correspondence mode.
7. A soil remediation system according to claim 1, wherein: the cleaning device (6) comprises a water spraying mechanism (7) and a sewage draining pipe (61); the water spraying mechanism (7) comprises an annular pipe (71) fixedly connected to the outer side of the top of the sedimentation tank (13), a plurality of connecting pipes (72) which are fixedly connected to the inner circumferential surface of the annular pipe (71) along the circumferential direction of the annular pipe (71) and are obliquely arranged, and a water inlet pipe (73) communicated with the annular pipe (71); one end, far away from the annular pipe (71), of each connecting pipe (72) is communicated with the sedimentation tank (13), a water supply pump (74) is arranged at one end, far away from the annular pipe (71), of each connecting pipe (72), an inlet of each water supply pump (74) is communicated with a water supply pipe (75), one end, far away from the water supply pump (74), of each water supply pipe (75) is communicated with a water tank (76), the top of each water tank (76) is communicated with a water supplementing pipe (761), and a first manual valve (762) is installed on each water supplementing pipe (761); one end of the drain pipe (61) is communicated with the bottom of the sedimentation tank (13), the other end of the drain pipe is communicated with the wastewater treatment mechanism, and a second manual valve (611) is installed on the drain pipe (61).
8. A soil remediation system according to claim 7, wherein: a plurality of heating wires are installed on one side of the water tank (76), a detergent tank (77) is communicated with the water supply pipe (75), a first electric valve (751) is installed on the water supply pipe (75), and the first electric valve (751) is positioned between the detergent tank (77) and the water tank (76); the top of the cleanser box (77) is communicated with a supply pipe (771), one end, away from the cleanser box (77), of the supply pipe (771) is communicated with a cleanser source, and a second electric valve (772) is installed on the supply pipe (771); an agitating component (78) is arranged in the cleaning agent box (77).
9. A soil remediation system according to claim 8, wherein: the stirring assembly (78) comprises a stirring shaft (781) vertically and rotatably connected into the detergent box (77), a plurality of stirring paddles (782) fixedly connected to the outer side wall of the stirring shaft (781), and a stirring motor (783) vertically arranged at the top of the detergent box (77); an output shaft of the stirring motor (783) is vertically and downwards fixedly connected with the top of the stirring shaft (781).
10. A soil remediation method, characterized in that: the method comprises the following steps:
(1) setting a soil temporary storage area, tamping the bottom of the soil temporary storage area, paving an anti-seepage film or an anti-seepage cloth, and placing the excavated polluted soil to be repaired on the anti-seepage film or the anti-seepage cloth of the soil temporary storage area;
(2) crushing soil blocks of soil to be restored by using crushing equipment (10);
(3) sending the crushed soil into a vibrating screening device (11), separating sundries in the soil from the soil, enabling the screened soil to fall on the lower part of the vibrating screening device (11), and separating concrete, bricks and stone sundries in the soil on the upper part of a screen mesh;
(4) sundries in the soil are sent into stone washing equipment (12) for water washing, and the soil attached to the sundries is eluted;
(5) discharging the muddy water eluted from the soil in the step (4) into a sedimentation tank (13), separating silt and water through the action of sedimentation, discharging supernatant liquid precipitated in the sedimentation tank (13) into a sewage pipe network or connecting the supernatant liquid into sewage treatment equipment for further treatment, sending the precipitated mud at the lower part of the sedimentation tank (13) into a dewatering and filtering device (14) for dewatering and filtering to form filter residues, and discharging the dewatered water into the sedimentation tank (13) for recycling;
then cleaning the sedimentation tank (13): the main gear (243) is driven to rotate through an output shaft of the driving motor (242), the main gear (243) drives the driven gear (244) to rotate in a rotating mode, the driven gear (244) drives the reciprocating lead screw (21) to rotate, the reciprocating lead screw (21) drives the cleaning frame (22) to move vertically in a rotating mode, and the cleaning frame (22) drives the first bristles (23) to move vertically in a moving mode, so that the side wall of the sedimentation tank (13) can be cleaned; when the bottom of the sedimentation tank (13) needs to be cleaned, the second bristles (35) are contacted with the bottom of the sedimentation tank (13) by moving to the cleaning frame (22), then the rotating block (32) is driven to rotate by the output shaft of the first pneumatic motor (33), the rotating block (32) rotates to drive the cleaning block (34) to rotate, and the cleaning block (34) rotates to drive the second bristles (35) to rotate, so that the bottom of the sedimentation tank (13) can be cleaned; next, the second bristles (35) are separated from the bottom of the sedimentation tank (13) by moving the cleaning frame (22), then the air cylinder (41) is closed, the piston rod of the air cylinder (41) drives the push block (42) to reset at the moment, after the push block (42) resets, the limit block (323) resets under the action of the spring (325) and abuts against the bottom of the cam (53), then the second pneumatic motor (51) is started, the output shaft of the second pneumatic motor (51) drives the cam (53) to rotate, the cam (53) rotates to drive the limit block (323) to reciprocate, and the limit block (323) reciprocates to drive the cleaning block (34) to reciprocate, so that sundries on the second bristles (35) can be vibrated down; then, opening the first electric valve (751) and the second electric valve (772) to enable water and detergent to enter the detergent tank (77), closing the first electric valve (751) and the second electric valve (772) after a proper amount of water and detergent enters the detergent tank (77), driving the stirring shaft (781) to rotate through the output shaft of the stirring motor (783) and driving the stirring paddle (782) to rotate through the rotation of the stirring shaft (781), and therefore enabling the detergent to be uniformly mixed with the water; then, the first electric valve (751) and the water supply pump (74) are started, and at the moment, hot water in the water tank (76) passes through the detergent tank (77), the water supply pump (74) and the annular pipe (71) in sequence and then is sprayed to the inner wall of the sedimentation tank (13) from the connecting pipe (72), so that the inner wall of the sedimentation tank (13) can be cleaned;
(6) conveying the filter residue obtained after the dehydration and filtration in the step (5) and the polluted soil obtained after the sieving in the step (3) into a stirring device (15), adding a heavy metal stabilizer and clear water into the stirring device (15), and uniformly stirring the polluted soil, the filter residue and the heavy metal stabilizer to enable the heavy metal stabilizer to react with the polluted soil;
(7) and (4) maintaining the soil treated in the step (6), covering and standing the soil by using woven bags, plastic films, geotextiles or straw mats during maintenance, wherein the maintenance time is more than or equal to 2 days, and the soil is kept moist during maintenance.
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| CN111136096B (en) | 2021-08-17 |
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