CN115557655B - Treatment method and device for lake heavy metal pollution bottom mud - Google Patents

Treatment method and device for lake heavy metal pollution bottom mud Download PDF

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Publication number
CN115557655B
CN115557655B CN202210285991.7A CN202210285991A CN115557655B CN 115557655 B CN115557655 B CN 115557655B CN 202210285991 A CN202210285991 A CN 202210285991A CN 115557655 B CN115557655 B CN 115557655B
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screen
lake
heavy metal
mud
screening
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CN115557655A (en
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薛琪
丁庄严
王朝龙
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Jiangsu Kangyuan Environmental Protection Technology Co ltd
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Jiangsu Kangyuan Environmental Protection Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor

Abstract

The application relates to the technical field of pollution treatment, in particular to a treatment method and a treatment device for lake heavy metal pollution bottom mud, wherein the treatment device for lake heavy metal pollution bottom mud comprises a ship body, a screening box, a first screen, a second screen, a third screen, an anti-blocking component, wherein the anti-blocking component comprises a lifting frame, a first motor, a turning rod, a turning plate and a convex column, the first motor is started to drive the turning rod to rotate for 90 degrees, the convex column is aligned with a sieve hole of the first screen, the lifting frame drives the turning plate to integrally move upwards, the convex column penetrates through the sieve hole, broken stones clamped in the sieve hole are jacked up and slide out of the screening box, and after the broken stone is cleaned, the turning plate is restored to the original position, and the effect of automatically cleaning the first screen is obtained through the first motor and the lifting frame.

Description

Treatment method and device for lake heavy metal pollution bottom mud
Technical Field
The application relates to the technical field of pollution treatment, in particular to a method and a device for treating lake heavy metal pollution bottom mud.
Background
Heavy metal in the lake sediment is a main pollutant and easily enters a water body to cause secondary pollution, at present, most of the polluted sediment is cleaned by a dredger, the sludge is dewatered and is subjected to innocent treatment by adding chemical agents, and the dewatering time is long due to the fact that a large amount of broken stone is contained in the sludge, so that the cleaning efficiency is low.
The existing treatment device for the sediment polluted by heavy metals in the river and lake comprises a screening cylinder body and a sludge dewatering machine, wherein a sediment inlet is formed in the upper portion of the screening cylinder body, the bottom surface of the screening cylinder body is communicated with a feed inlet of the sludge dewatering machine, a broken stone screening net, a coarse sand screening net and a fine sand screening net are sequentially arranged in the screening cylinder body from top to bottom, and gravity is utilized to screen from top to bottom so as to separate broken stone and coarse sand, so that dewatering pressure is reduced, and the treatment period is shortened.
However, since the screening is performed by gravity, broken stones with irregular shapes can block the screen holes, and the screening effect is poor due to long-time use.
Disclosure of Invention
The application aims to provide a treatment device for lake heavy metal polluted bottom mud, which solves the technical problem that the screening effect is poor due to long-time use because broken stones with irregular shapes can block screen holes by screening by means of gravity.
In order to achieve the above purpose, the application provides a treatment device for lake heavy metal polluted bottom mud, which comprises a ship body, a screening box, a first screen, a second screen and a third screen, wherein the screening box is arranged above the ship body, the first screen, the second screen and the third screen are sequentially arranged in the screening box from top to bottom, and the bottom of the screening box is provided with a fine sand storage box and further comprises an anti-blocking component; the anti-blocking assembly comprises a lifting frame, a first motor, a turnover rod, a turnover plate and a convex column, wherein the lifting frame is arranged on the outer side wall of the screening box, the first motor is fixedly connected with the lifting frame and located in the screening box, the turnover rod is arranged between the first screen and the second screen, one end of the turnover rod penetrates through the screening box and is rotationally connected with the lifting frame, the other end of the turnover rod is rotationally connected with the output end of the first motor, the turnover plate is fixedly connected with the turnover rod and located above the turnover rod, and a plurality of convex columns are uniformly arranged at intervals on the top end of the turnover plate.
The anti-blocking assembly further comprises a cleaning unit, wherein the cleaning unit is arranged in the screening box and located above the first screen.
The lifting frame comprises two first cylinders, lifting rods and guide rods, wherein the number of the first cylinders is two, the two first cylinders are respectively arranged on two opposite sides of the screening box, the lifting rods are arranged at the output ends of the first cylinders, the guide grooves are respectively arranged on two opposite sides of the screening box, the number of the guide rods is two, the two guide rods respectively penetrate through the corresponding guide grooves and are respectively fixedly connected with the corresponding lifting rods, the first motor is fixedly connected with one guide rod, and the turning rod is rotatably connected with the other guide rod.
Each convex column comprises a bottom column, a spherical sleeve and a spike, wherein the bottom column is fixedly connected with the turnover plate and located above the turnover plate, the spherical sleeve is arranged on the outer side wall of the bottom column, and the spike is fixedly connected with the bottom column and located above the bottom column.
The cleaning unit comprises a movable screw rod, a water pump, a water distribution pipe and a connecting hose, wherein the water pump is arranged on the outer side of the screening box, the movable screw rod is arranged in the screening box and located above the first screen, the water distribution pipe is movably connected with the output end of the movable screw rod, one end of the connecting hose is communicated with the water pump, the other end of the connecting hose is communicated with the water distribution pipe, and a plurality of water spraying holes are uniformly formed in the bottom of the water distribution pipe at intervals.
The device for treating the bottom mud polluted by the lake heavy metal further comprises a dredging component, and the dredging component is arranged at one end of the ship body.
The mud dredging device comprises a ship body, a mud dredging assembly, a mud dredging device and a mud dredging device, wherein the mud dredging assembly comprises a first mud pump, a bottom plate, an anchor jack, an adjusting frame, a mud inlet pipeline and a dredging drill bit, the bottom plate is arranged at one end of the ship body, the anchor jack is arranged above the bottom plate, the adjusting frame is in sliding connection with the bottom plate and is located below the bottom plate, a lock chain of the anchor jack is fixedly connected with the adjusting frame, the dredging drill bit is arranged at the bottom of the adjusting frame, one end of the first mud pump is connected with the top end pipeline of the screening box, and the other end of the first mud pump is fixedly connected with the dredging drill bit through the mud inlet pipeline.
The adjusting frame comprises a sliding arm and a bending arm, wherein the sliding arm is in sliding connection with the bottom plate and is positioned below the bottom plate, and the bending arm is in rotary connection with the bottom of the sliding arm.
The application also provides a treatment method of the lake heavy metal pollution bottom mud, which adopts the treatment device of the lake heavy metal pollution bottom mud, and comprises the following steps:
the ship body runs in a lake according to an S-shaped route, and the adjusting frame is adjusted downwards by the anchor jack so that the excavating drill bit contacts the bottom of the lake;
starting the first slurry pump and the excavating drill bit, excavating the lake sediment into the screening box, and screening the first slurry pump into broken stone, coarse sand and fine sand;
the broken stone is returned to the bottom of the lake during excavation, coarse sand and cement materials are mixed, and the mixture is paved above the broken stone;
and in the running process of the ship body, the anti-blocking assembly is started regularly, the first screen is cleaned, and when the first screen is cleaned, the first slurry pump and the excavating bit stop working, and after the cleaning is completed, the ship body continues to run.
According to the treatment device for the lake heavy metal polluted bottom mud, when the anti-blocking assembly works, the first motor is started to drive the overturning rod to rotate, so that the overturning plate rotates by 90 degrees, the convex columns are aligned to the sieve holes of the first sieve mesh, the lifting frame drives the overturning plate to integrally move upwards, so that the convex columns penetrate through the sieve holes to jack up broken stones clamped in the sieve holes and slide out of the screening box, and after the broken stones are cleaned, the first motor and the lifting frame restore the overturning plate to the original position, and through the structure, the cleaning of the first sieve mesh is automatically completed, and the first sieve mesh is prevented from being blocked.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is an overall cross-sectional view of a first embodiment of the present application.
Fig. 2 is a partial enlarged view at a of a first embodiment of the present application.
Fig. 3 is a cross-sectional view of the lifting frame of the first embodiment of the application.
Fig. 4 is an overall cross-sectional view of a second embodiment of the present application.
Fig. 5 is an overall cross-sectional view of a third embodiment of the present application.
Fig. 6 is a cross-sectional view of a stationary pipe according to a third embodiment of the present application.
Fig. 7 is a cross-sectional view of a stirred tank in accordance with a third embodiment of the present application.
FIG. 8 is a flow chart of steps of a method for treating bottom mud polluted by heavy metals in lakes.
101-hull, 102-screening box, 103-first screen, 104 second screen, 105-third screen, 106-fine sand storage box, 107-crane, 108-first motor, 109-turn bar, 110-turn plate, 111-column, 112-first cylinder, 113-lift bar, 114-guide bar, 115-guide slot, 116-bottom column, 117-spherical jacket, 118-spike, 119-movable screw, 120-water pump, 121-water distribution pipe, 122-connection hose, 123-water spray hole, 201-first slurry pump, 202-bottom plate, 203-anchor, 204-adjusting rack, 205-mud feeding pipe, 206-excavating bit, 207-slide arm, 208-bend arm, 301-middle turn cavity, 302-second motor, 303-turn filter plate, 304-pressure sensor, 305-fixed pipe, 306-agitation tank, 307-gravel discharge pipe, 308-coarse sand discharge pipe, 309-second slurry pump, 310-extension pipe, 311-tank, 312-third motor, 313-agitation tank, 314-cutting blade 315, and feed pipe.
Detailed Description
The following detailed description of embodiments of the application, examples of which are illustrated in the accompanying drawings and, by way of example, are intended to be illustrative, and not to be construed as limiting, of the application.
The first embodiment of the application is as follows:
referring to fig. 1-3, the device comprises a hull 101, a screening box 102, a first screen 103, a second screen 104 and a third screen 105, wherein the screening box 102 is arranged above the hull 101, the first screen 103, the second screen 104 and the third screen 105 are sequentially arranged inside the screening box 102 from top to bottom, a fine sand storage box 106 is arranged at the bottom of the screening box 102, and the device further comprises an anti-blocking component; the anti-blocking assembly comprises a lifting frame 107, a first motor 108, a turnover rod 109, a turnover plate 110 and a convex column 111, wherein the lifting frame 107 is arranged on the outer side wall of the screening box 102, the first motor 108 is fixedly connected with the lifting frame 107 and is located inside the screening box 102, the turnover rod 109 is arranged between the first screen 103 and the second screen 104, one end of the turnover rod 109 penetrates through the screening box 102 and is rotationally connected with the lifting frame 107, the other end of the turnover rod 109 is rotationally connected with the output end of the first motor 108, the turnover plate 110 is fixedly connected with the turnover rod 109 and is located above the turnover rod 109, and a plurality of convex columns 111 are uniformly arranged on the top end of the turnover plate 110 at intervals.
The anti-blocking assembly further comprises a cleaning unit, wherein the cleaning unit is arranged in the screening box 102 and is positioned above the first screen 103; the lifting frame 107 includes two first cylinders 112, lifting rods 113 and guide rods 114, the number of the first cylinders 112 is two, the two first cylinders 112 are respectively arranged on two opposite sides of the screening box 102, the lifting rods 113 are respectively arranged at the output ends of each first cylinder 112, the guide grooves 115 are respectively arranged on two opposite sides of the screening box 102, the number of the guide rods 114 is two, the two guide rods 114 respectively penetrate through the corresponding guide grooves 115 and are respectively fixedly connected with the corresponding lifting rods 113, the first motor 108 is fixedly connected with one guide rod 114, and the turning rod 109 is rotationally connected with the other guide rod 114; each convex column 111 comprises a bottom column 116, a spherical sleeve 117 and a spike 118, wherein the bottom column 116 is fixedly connected with the turnover plate 110 and is positioned above the turnover plate 110, the spherical sleeve 117 is arranged on the outer side wall of the bottom column 116, and the spike 118 is fixedly connected with the bottom column 116 and is positioned above the bottom column 116; the cleaning unit comprises a movable screw rod 119, a water pump 120, a water distribution pipe 121 and a connecting hose 122, wherein the water pump 120 is arranged on the outer side of the screening box 102, the movable screw rod 119 is arranged in the screening box 102 and is positioned above the first screen 103, the water distribution pipe 121 is movably connected with the output end of the movable screw rod 119, one end of the connecting hose 122 is communicated with the water pump 120, the other end of the connecting hose 122 is communicated with the water distribution pipe 121, and a plurality of water spraying holes 123 are uniformly formed in the bottom of the water distribution pipe 121 at intervals.
In the use process, the hull 101 runs in the lake, the bottom mud of the lake is sent into the screening box 102, the bottom mud sequentially passes through the first screen 103, the second screen 104 and the third screen 105 due to gravity, the bottom mud is screened into broken stone, coarse sand and fine sand, the first screen 103 and the second screen 104 are respectively provided with an outlet, the separated broken stone and coarse sand slide out along the corresponding outlets, when the anti-blocking assembly is used, the first motor 108 is started to drive the overturning rod 109 to rotate, the overturning plate 110 rotates by 90 degrees, the convex columns 111 are aligned with the screen holes of the first screen 103, the lifting frame 107 drives the overturning plate 110 to move upwards integrally, the convex columns 111 pass through the screen holes, broken stone clamped in the screen holes is jacked up, the overturning plate 110 is restored to the original position after the broken stone is cleaned, and the first motor 108 and the lifting frame 107 automatically complete the first screen 103 to prevent the first screen 103 from being blocked.
The cleaning unit works simultaneously with the lifting frame 107, and can clean the crushed stone clamped on the first screen 103, and wash out coarse sand and fine sand adhered to the surface of the crushed stone, so that the coarse sand and the fine sand are prevented from being discharged out of the screening box 102 along with the crushed stone.
The first cylinders 112 on two sides reciprocate up and down at the same time to drive the lifting rods 113 and the guide rods 114 to move, and the guide rods 114 move along the guide grooves 115 to drive the overturning rods 109 to move up and down, so that the convex columns 111 reciprocate up and down and pass through the screen for multiple times, and the cleaning effect of broken stones is improved.
The spherical sleeve 117 is made of rubber material, has elasticity and can squeeze the sieve holes of the first screen 103, and the pointed nails 118 have crushing effect on broken stone, so that cleaning effect is improved.
When the cleaning unit is used, water in a lake is pumped by the water pump 120, the water is transmitted to the water distribution pipe 121 by the connecting hose 122 and is sprayed out by the water spraying holes 123, the movable screw rod 119 drives the water distribution pipe 121 to move back and forth, the first screen 103 is uniformly washed, coarse sand and fine sand on the surface of crushed stone can be taken away, and the cleaning effect is improved.
The second embodiment of the application is as follows:
referring to fig. 4, on the basis of the first embodiment, the treatment device for lake heavy metal polluted bottom mud of the present embodiment further includes a dredging assembly, where the dredging assembly is disposed at one end of the hull 101; the mud digging assembly comprises a first mud pump 201, a bottom plate 202, an anchor jack 203, an adjusting frame 204, a mud inlet pipeline 205 and a digging drill bit 206, wherein the bottom plate 202 is arranged at one end of the ship body 101, the anchor jack 203 is arranged above the bottom plate 202, the adjusting frame 204 is in sliding connection with the bottom plate 202 and is positioned below the bottom plate 202, a chain of the anchor jack 203 is fixedly connected with the adjusting frame 204, the digging drill bit 206 is arranged at the bottom of the adjusting frame 204, one end of the first mud pump 201 is connected with a top end pipeline of the screening box 102, the other end of the first mud pump 201 is connected with the digging drill bit 206 through the mud inlet pipeline 205, and the mud inlet pipeline 205 is fixedly connected with the adjusting frame 204; the adjusting frame 204 comprises a sliding arm 207 and a bending arm 208, wherein the sliding arm 207 is slidably connected with the base plate 202 and is located below the base plate 202, and the bending arm 208 is rotatably connected with the bottom of the sliding arm 207.
Before the excavating bit 206 works, the adjusting frame 204 is lowered by the anchor jack 203, so that the excavating bit 206 contacts the lake bottom, when the excavating bit 206 works, bottom mud is sent into the mud inlet pipeline 205 by a spiral blade, the first mud pump 201 provides suction force, so that the bottom mud is sent to the screening box 102, after the excavating bit 206 works, the anchor jack 203 rolls up a chain, and the excavating bit 206 is stored by the adjusting frame 204, so that the ship 101 can conveniently run subsequently.
When the bending arm 208 is limited by the bottom plate 202 and is parallel to the sliding arm 207 in the storage state, and when the chain of the anchor handling machine 203 is lowered, the bending arm 208 slides out of the bottom plate 202 and is not limited by the bottom plate 202 any more, and starts to turn downwards until the excavating bit 206 contacts the lake bottom, and the depth of the excavating bit 206 can be controlled through the chain of the anchor handling machine 203, so that the device is suitable for lakes with various depths.
The third embodiment of the application is as follows:
referring to fig. 5-7, in the second embodiment, a transfer chamber 301 is disposed at the top end of the screening box 102, a judging component is disposed at the top end of the transfer chamber 301, the judging component includes a fixed pipe 305, a second motor 302, a rotary filter plate 303 and a pressure sensor 304, the fixed pipe 305 is disposed at the top end of the screening box 102, the fixed pipe 305 is in pipe connection with the first slurry pump 201, the second motor 302 is disposed on an outer side wall of the fixed pipe 305, an output shaft of the second motor 302 penetrates through the fixed pipe 305, the rotary filter plate 303 is fixedly connected with an output shaft of the second motor 302 and is located inside the fixed pipe 305, the pressure sensor 304 is disposed above the rotary filter plate 303, and the transfer chamber 301 is in pipe connection with the fine sand storage box 106 and is provided with a valve.
One side of screening case 102 is provided with lay the subassembly, lay the subassembly including agitator tank 306, rubble discharging pipe 307, coarse sand discharging pipe 308, second slush pump 309 and flexible pipe 310, agitator tank 306 set up in one side of screening case 102, the coarse sand processing pipe set up in the bottom of second screen cloth 104 to be located flexible agitator tank 306's top, the one end of second slush pump 309 with the bottom pipe connection of agitator tank 306, the other end of second slush pump 309 with flexible pipe 310 pipe connection, the one end of rubble discharging pipe 307 set up in the bottom of first screen cloth 103, the other end of rubble discharging pipe 307 with flexible pipe 310 intercommunication.
The stirring tank 306 comprises a tank body 311, a third motor 312, stirring rods 313, cutting edges 314 and a feeding pipe 315, wherein the tank body 311 is arranged on one side of the screening box 102, the third motor 312 is arranged at the bottom of the tank body 311, the stirring rods 313 are fixedly connected with an output shaft of the third motor 312 and are positioned in the tank body 311, the outer side walls of the stirring rods 313 are provided with a plurality of cutting edges 314 in a staggered mode, and the feeding pipe 315 is arranged at the top end of the tank body 311.
After the bottom mud is sent to the screening box 102 by the mud dredging assembly, the bottom mud is primarily filtered by the rotary filter plate 303 in the fixed pipeline 305 through the fixed pipeline 305, when a large amount of coarse sand and broken stone are not contained in the bottom mud, the rotary filter plate 303 is not blocked, the bottom mud in the transfer cavity 301 is sent to the fine sand storage box 106 through the pump body, when a large amount of coarse sand and broken stone are contained in the bottom mud, the rotary filter plate 303 is blocked, the pressure born by the rotary filter plate 303 is gradually increased, after the value of the pressure sensor 304 reaches a preset value, the second motor 302 is started, so that the rotary filter plate 303 is turned over 90 degrees, and the bottom mud in the transfer cavity 301 is sent to the upper portion of the first screen 103, the rotary filter plate 303 is rotated for multiple times, so that the blocking object can be thrown down for the next time, unnecessary screening is reduced through the judging assembly, and the screening efficiency is improved.
The screened crushed stone is directly sent to the shrinkage tube through the crushed stone discharging tube 307, according to the running direction of the ship body 101, the bottom tube orifice of the shrinkage tube is positioned at the rear of the excavating bit 206, the crushed stone is paved on the excavated route again, the coarse sand discharging tube 308 guides coarse sand into the stirring tube, cement gel and iron tailings are added for mixing, the mixture is sent to the lake bottom after the crushed stone is paved through the second slurry pump 309, a sealing surface is formed after solidification, bottom mud is prevented from floating upwards, heavy metal is absorbed through the iron tailings, and the treatment effect is improved.
Through charging tube 315 adds cement gel and iron tailing, through third motor 312 drives puddler 313 is rotatory, because cutting edge 314 is crisscross to be set up, has improved the mixed effect of coarse sand, cement gel and iron tailing.
Referring to fig. 8, the application further provides a treatment method for the lake heavy metal polluted bottom mud, which adopts the treatment device for the lake heavy metal polluted bottom mud, and comprises the following steps:
s1: the hull 101 runs in a lake along an S-shaped route, and the adjusting frame 204 is adjusted downwards by the anchor jack 203 so that the excavating bit 206 contacts the bottom of the lake;
s2: starting the first slurry pump 201 and the excavating drill 206 to excavate the lake sediment into the screening box 102, and screening the first slurry pump 201 into crushed stone, coarse sand and fine sand;
s3: the broken stone is returned to the bottom of the lake during excavation, coarse sand and cement materials are mixed, and the mixture is paved above the broken stone;
s4: during the running process of the ship body, the anti-blocking assembly is started periodically, the first screen 103 is cleaned, the first slurry pump 201 and the excavating bit 206 stop working during cleaning, and after cleaning, the ship body continues to run.
In the embodiment, broken stone and coarse sand are discharged by screening the bottom mud, the coarse sand is mixed with cement raw materials and sent to the bottom of a lake for paving, and the bottom mud remained on the bottom of the lake is prevented from floating to cause secondary pollution.
The foregoing disclosure is only illustrative of one or more preferred embodiments of the present application, and it is not intended to limit the scope of the claims hereof, as persons of ordinary skill in the art will understand that all or part of the processes for practicing the embodiments described herein may be practiced with equivalent variations in the claims, which are within the scope of the application.

Claims (8)

1. The utility model provides a processing apparatus of lake heavy metal pollution bed mud, includes hull, screening case, first screen cloth, second screen cloth and third screen cloth, the screening case set up in the top of hull, first screen cloth, second screen cloth and third screen cloth from top to bottom set up in proper order in the inside of screening case, the bottom of screening case sets up fine sand storage box, its characterized in that,
the anti-blocking device also comprises an anti-blocking component;
the anti-blocking assembly comprises a lifting frame, a first motor, a turnover rod, a turnover plate and convex columns, wherein the lifting frame is arranged on the outer side wall of the screening box, the first motor is fixedly connected with the lifting frame and is positioned in the screening box, the turnover rod is arranged between the first screen and the second screen, one end of the turnover rod penetrates through the screening box and is rotationally connected with the lifting frame, the other end of the turnover rod is rotationally connected with the output end of the first motor, the turnover plate is fixedly connected with the turnover rod and is positioned above the turnover rod, and a plurality of convex columns are uniformly arranged at the top end of the turnover plate at intervals;
the top of screening case is provided with the transfer chamber, the top of transfer chamber is provided with the judgement subassembly, the judgement subassembly includes fixed pipeline, second motor, rotates filter plate and pressure sensor, lake heavy metal pollution substrate sludge's processing apparatus still includes the dredging module, the dredging module set up in the one end of hull, the dredging module includes first slush pump, bottom plate, anchor, alignment jig, advance mud pipeline and excavation drill bit, fixed pipeline set up in the top of screening case, fixed pipeline is connected with first slush pump pipeline, the one end of first slush pump with the top pipeline of screening case is connected, the other end of first slush pump passes through advance mud pipeline with excavation drill bit fixed connection, the second motor set up in the lateral wall of fixed pipeline, the output shaft of second motor runs through fixed pipeline, rotate the filter plate with the output shaft fixed connection of second motor, and be located the inside of fixed pipeline, pressure sensor sets up in the top of rotating the filter plate, the filter plate is connected with the fine sand storage box has;
one side of screening case is provided with lays the subassembly, lay the subassembly including agitator tank, rubble discharging pipe, coarse sand discharging pipe, second slush pump and flexible pipe, the agitator tank set up in one side of screening case, coarse sand discharging pipe set up in the bottom of second screen cloth to be located flexible agitator tank's top, the one end of second slush pump with the bottom pipe connection of agitator tank, the other end of second slush pump with flexible pipe connection, the one end of rubble discharging pipe set up in the bottom of first screen cloth, the other end of rubble discharging pipe with flexible pipe intercommunication.
2. The treatment device for lake heavy metal polluted bottom mud of claim 1, wherein,
the anti-blocking assembly further comprises a cleaning unit, wherein the cleaning unit is arranged in the screening box and located above the first screen.
3. The treatment device for lake heavy metal polluted bottom mud as set forth in claim 2, wherein,
the lifting frame comprises two first cylinders, lifting rods and guide rods, wherein the number of the first cylinders is two, the two first cylinders are respectively arranged on two opposite sides of the screening box, the lifting rods are arranged at the output ends of the first cylinders, guide grooves are respectively arranged on two opposite sides of the screening box, the number of the guide rods is two, the two guide rods respectively penetrate through the corresponding guide grooves and are respectively fixedly connected with the corresponding lifting rods, the first motor is fixedly connected with one guide rod, and the turning rod is rotatably connected with the other guide rod.
4. The treatment device for lake heavy metal polluted bottom mud as set forth in claim 3, wherein,
every projection all includes sill pillar, spherical cover and sharp nail, the sill pillar with upset board fixed connection is located the top of upset board, spherical cover set up with the lateral wall of sill pillar, sharp nail with sill pillar fixed connection is located the top of sill pillar.
5. The treatment device for lake heavy metal polluted bottom mud as set forth in claim 4, wherein,
the cleaning unit comprises a movable screw rod, a water pump, a water distribution pipe and a connecting hose, wherein the water pump is arranged on the outer side of the screening box, the movable screw rod is arranged in the screening box and is positioned above the first screen, the water distribution pipe is movably connected with the output end of the movable screw rod, one end of the connecting hose is communicated with the water pump, the other end of the connecting hose is communicated with the water distribution pipe, and a plurality of water spraying holes are uniformly formed in the bottom of the water distribution pipe at intervals.
6. The treatment device of the lake heavy metal polluted bottom mud of claim 5, wherein,
the bottom plate set up in the one end of hull, the anchor machine set up in the top of bottom plate, the alignment jig with bottom plate sliding connection, and be located the below of bottom plate, the chain of anchor machine with alignment jig fixed connection, the drill bit set up in the bottom of alignment jig, advance mud pipeline with alignment jig fixed connection.
7. The treatment device for lake heavy metal polluted bottom mud as set forth in claim 6, wherein,
the adjusting frame comprises a sliding arm and a bending arm, wherein the sliding arm is in sliding connection with the bottom plate and is positioned below the bottom plate, and the bending arm is in rotary connection with the bottom of the sliding arm.
8. A method for treating lake heavy metal polluted bottom mud by adopting the treatment device for the lake heavy metal polluted bottom mud as claimed in claim 7, which is characterized by comprising the following steps:
the ship body runs in a lake according to an S-shaped route, and the adjusting frame is adjusted downwards by the anchor jack so that the excavating drill bit contacts the bottom of the lake;
starting the first slurry pump and the excavating drill bit, excavating the lake sediment into the screening box, and screening the first slurry pump into broken stone, coarse sand and fine sand;
the broken stone is returned to the bottom of the lake during excavation, coarse sand and cement materials are mixed, and the mixture is paved above the broken stone;
and in the running process of the ship body, the anti-blocking assembly is started regularly, the first screen is cleaned, and when the first screen is cleaned, the first slurry pump and the excavating bit stop working, and after the cleaning is completed, the ship body continues to run.
CN202210285991.7A 2022-03-22 2022-03-22 Treatment method and device for lake heavy metal pollution bottom mud Active CN115557655B (en)

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