CN214059979U - Air floatation clarifying device for sewage treatment - Google Patents
Air floatation clarifying device for sewage treatment Download PDFInfo
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- CN214059979U CN214059979U CN202023064100.0U CN202023064100U CN214059979U CN 214059979 U CN214059979 U CN 214059979U CN 202023064100 U CN202023064100 U CN 202023064100U CN 214059979 U CN214059979 U CN 214059979U
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Abstract
The utility model relates to an air-float clarification device for sewage treatment, which effectively solves the problem of muddy supernatant liquid after clarification of a sedimentation tank when a scraper blade is started, and comprises a sedimentation tank, an aeration tank and an aeration device, and is characterized in that the bottom of the sedimentation tank is rotationally connected with two sludge scraper devices, a plurality of anti-muddy baffles rotationally connected with the sedimentation tank are arranged above the sludge scraper devices, the right ends of the anti-muddy baffles are rotationally connected with synchronous rotating connecting rods, the left end of one anti-muddy baffle is rotationally connected with a baffle driving connecting rod, the other end of the baffle driving connecting rod is rotationally connected with a driving slider which is connected with the sedimentation tank in a left-right sliding manner, the driving slider is rotationally connected with a transmission connecting rod, the transmission connecting rod is connected on the sedimentation tank in a left-right sliding manner, a sludge outlet is arranged at the bottom of the sedimentation tank, and the transmission connecting rod is externally connected with a driving device; the effect of improving the working efficiency is achieved.
Description
Technical Field
The utility model relates to a sewage treatment device field especially relates to an air supporting clarification device for sewage treatment.
Background
The air floatation is a process of introducing air or other gases into sewage to generate bubbles, so that some fine suspended matters or solid particles in the sewage are attached to the bubbles and float upwards to the water surface along with the bubbles to be scraped, thereby completing solid-liquid separation. In a sewage post-treatment system, an air floatation tank and a sedimentation tank are used as devices for separating mud from water and are essential basic treatment units in the sewage treatment process.
The air flotation clarification tank has two sets of mud scrapping devices, namely an upper mud scrapping device and a bottom mud scrapping device, wherein the upper mud scrapping device mainly clears away a sludge layer floating to the water surface, and the bottom mud scrapping device mainly clears away a sludge layer sinking to the bottom of the tank.
The existing air floatation clarifying device has the following problems:
1. the bottom mud scraping device mainly clears away the sludge blanket that sinks to the bottom of the pool when using, stirs the silt of bottom easily when using to the supernatant fluid that leads to the sedimentation tank to clarify easily is muddy, and the treatment effect does not reach effect in advance.
2. When in use, the sludge discharge port of the device is easy to be blocked, so that the treatment effect is not good enough.
Therefore, the utility model provides an air flotation clarification device for sewage treatment to solve the problems.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model provides an air supporting clarification device for sewage treatment, the effectual silt of having solved the bottom when using is mixxed easily, leads to the treatment effect to reach the problem of effect in advance.
The utility model relates to an air supporting clarification device for sewage treatment, including settling basin, aeration tank, aeration equipment, its characterized in that, the settling basin bottom is rotated and is connected with two silt scraper means, silt scraper means top have a plurality ofly with the settling basin rotates the muddy baffle of preventing of connecting, prevent that muddy baffle right-hand member all rotates and is connected with synchronous rotation connecting rod, one of them prevent muddy baffle left end and rotate and be connected with baffle drive connecting rod, baffle drive connecting rod other end rotate be connected with settling basin horizontal sliding connection's drive slider, drive slider rotates and is connected with the transmission connecting rod, transmission connecting rod horizontal sliding connection be in on the settling basin, the mud outlet has been seted up to 1 bottom of settling basin, the external drive arrangement of transmission connecting rod.
Preferably, the sedimentation tank bottom has been seted up silt and has been collected the bell jar, silt is collected the bell jar bottom and has been seted up out the mud mouth, the inside rotation of silt is collected the bell jar and is connected with silt direction scraper blade, silt direction scraper blade bottom is connected with drive arrangement.
Preferably, the sedimentation tank bottom side left and right sliding connection has left bell jar apron, the left side of left side bell jar apron lower extreme fixedly connected with drives the rack, a left side drive rack meshing have with the sedimentation tank bottom rotates and is connected with left side apron drive gear, left side apron drive gear meshing has the apron leading gear, the apron leading gear passes through belt mechanism fixedly connected with apron from the gear, the apron has right driven rack from gear engagement, right driven rack fixedly connected with sedimentation tank bottom side left and right sliding connection's right bell jar apron, left side bell jar apron left end with the drive link rotates and connects.
Preferably, the bottom end of the sedimentation tank is fixedly connected with a gear sliding plate, an arc-shaped groove is formed in the gear sliding plate, a control gear is slidably connected inside the arc-shaped groove, the control gear is meshed with a motor driving gear which is connected with the gear sliding plate in a rotating mode, the motor driving gear is externally connected with a driving device, an inner gear is fixedly connected onto the gear sliding plate, the inner gear is meshed with the control gear, the control gear is connected with a transmission connecting rod in a vertical sliding mode, the control gear is meshed with a scraper driving gear, the scraper driving gear is connected to the sludge guide scraper through a transmission mechanism, the control gear is meshed with a sludge scraper driving gear, and the sludge scraper driving gear is connected to the left side of the sludge scraper device through a belt transmission mechanism.
Preferably, the left side silt scraper means right-hand member be connected with through belt drive mechanism with the sedimentation tank rotates the scraper blade steering gear who connects, scraper blade steering gear meshing have with the sedimentation tank rotates the scraper blade of connecting and turns to auxiliary gear, the scraper blade turns to auxiliary gear and is connected to the right side through belt drive mechanism on the silt scraper means.
The utility model is an improvement of the existing air floatation clarification device for sewage treatment, and solves the problem of turbid supernatant after clarification in a sedimentation tank by adding a turbidity prevention baffle and a sludge scraper device; the problem that a sludge discharge port is easy to block is solved by adding the sludge guide scraper and the conical groove cover plate; the utility model discloses very big improvement work efficiency, be convenient for operation, stable in structure.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is the internal structure schematic diagram of the sedimentation tank of the utility model.
Fig. 3 is a schematic view of the inside of the sedimentation tank of the present invention.
Fig. 4 is a schematic view of the internal connection structure of the present invention.
Fig. 5 is a schematic view of the closure of the anti-clouding baffle of the present invention.
Fig. 6 is an opening schematic view of the anti-clouding baffle of the present invention.
Fig. 7 is a schematic view of the gear control mechanism of the present invention.
Fig. 8 is a schematic view of the sludge guiding scraper of the present invention.
Fig. 9 is a schematic view of a part of the anti-clouding baffle of the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 9. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The embodiment I, the utility model relates to an air flotation clarification device for sewage treatment, which comprises a sedimentation tank 1, an aeration tank 2 and an aeration device 3, and is characterized in that the bottom of the sedimentation tank 1 is rotationally connected with two sludge scraper devices 4, the sludge scraper devices 4 are externally connected with a driving motor, the driving motor is externally connected with a power supply, the sludge scraper devices 4 are used for pushing the sludge precipitated at the bottom of the sedimentation tank 1 to a sludge outlet, a plurality of anti-turbidity baffles 5 are rotationally connected with the sedimentation tank 1 above the sludge scraper devices 4, chamfers are arranged on two sides of each anti-turbidity baffle 5 and are used for enabling the anti-turbidity baffles 5 to be tightly attached when being closed, the right ends of all the anti-turbidity baffles 5 are rotationally connected with a same synchronous rotation connecting rod 6, the synchronous rotation connecting rod 6 is used for controlling all the anti-turbidity baffles 5 to simultaneously rotate at the same angle, wherein the left end of one of the anti-turbidity baffles 5 is rotatably connected with a baffle driving connecting rod 7, the baffle driving connecting rod 7 is used for adjusting the lifting angle of the anti-turbidity baffle 5, the other end of the baffle driving connecting rod 7 is rotatably connected with a driving slider 8 which is connected with the sedimentation tank 1 in a left-right sliding manner, the side wall of the sedimentation tank 1 is provided with a through sliding groove, the driving slider 8 slides on the sliding groove in a left-right manner, the sliding groove is subjected to waterproof treatment, two ends of the driving slider 8 are fixedly connected with telescopic waterproof baffles, water cannot flow out from the sliding groove when the driving slider 8 slides in the sliding groove in the left-right manner, the driving slider 8 is fixedly connected with a transmission connecting rod 9, the transmission connecting rod 9 controls the driving slider 8 to slide in the left-right manner, the bottom of the sedimentation tank 1 is provided with a sludge outlet 11, and the transmission connecting rod 9 is connected outside the sedimentation tank 1 in a left-right sliding manner, the transmission connecting rod 9 is externally connected with an electric push rod, and the electric push rod is externally connected with a control switch.
This embodiment is when concrete implementation, when the silt of sedimentation tank bottom needs to be cleared up, bottom start electric putter, transmission connecting rod 9 slides left and drives drive slider 8 slides left, drive slider 8 slides left and drives prevent muddy baffle 5 and slides down, prevent muddy baffle 5 is closed, starts silt scraper means 4 drives bottom silt and promotes to a mud outlet, and the end after electric putter drives transmission connecting rod 9 slides right, prevent muddy baffle 5 and open.
In the second embodiment, on the basis of the first embodiment, when in use, sludge is easily stuck at a dead angle pushed by the sludge scraper device 4, and the sludge is easily blocked at the sludge outlet, which results in poor sewage treatment effect, so this embodiment provides a sludge discharge auxiliary device to solve the above problem, specifically, the bottom of the sedimentation tank 1 is provided with a sludge collection tapered groove 10, the inside of the sludge collection tapered groove 10 is a tapered groove that is inclined downward, the bottom of the sludge collection tapered groove 10 is provided with a sludge outlet 11, sludge slides into the sludge collection tapered groove 10 and flows out of the sludge outlet 11 along the side wall of the sludge collection tapered groove 10, the inside of the sludge collection tapered groove 10 is rotatably connected with a sludge guide scraper 12, the bottom of the sludge guide scraper 12 is provided with a scraper sludge outlet, the scraper outlet is coaxial with the sludge outlet 11, referring to fig. 8, the sludge guide scraper 12 is used to push sludge to flow to the sludge outlet 11, the mud outlet is prevented from being blocked, the bottom of the mud guide scraper 12 is connected with a scraper driving motor through a belt pulley mechanism, and the scraper driving motor is externally connected with a power supply.
In the specific implementation of this embodiment, the sludge at the bottom of the sedimentation tank 1 is pushed to the inside of the sludge collection conical tank 10 through the sludge scraper device 4, the sludge guide scraper 12 is activated, and the sludge guide scraper 12 pushes the sludge to flow out from the sludge outlet 11.
In the third embodiment, on the basis of the second embodiment, when the sludge guide scraper 12 is started, water is easily stirred to be muddy, so that the clarified supernatant of the sedimentation tank is muddy, and thus the present embodiment provides a cover plate device, which effectively solves the above problems, specifically, the bottom of the sedimentation tank 1 is connected with a left tapered groove cover plate 13 in a left-right sliding manner, the bottom of the sedimentation tank 1 is provided with a cover plate sliding groove, the left tapered groove cover plate 13 slides in the cover plate sliding groove in the left-right sliding manner, the lower end of the left tapered groove cover plate 13 is fixedly connected with a left driving rack 14, the left driving rack 14 is engaged with a left cover plate driving gear 15 rotatably connected with the bottom of the sedimentation tank 1, the left cover plate driving gear 15 is engaged with a cover plate guide gear 16, the cover plate guide gear 16 is fixedly connected with a left cover plate transmission belt pulley, the left cover plate transmission belt pulley is connected with a right cover plate transmission belt pulley rotatably connected with the sedimentation tank 1 through a belt, the right side is lapped transmission pulley fixedly connected with and is lapped from gear 17, the apron has right driven rack 27 from gear 17 meshing, right side driven rack 27 fixedly connected with sedimentation tank 1 bottom left and right sliding connection's right conical groove apron 28, left side conical groove apron 13 left end with transmission link 9 rotates the connection, apron guide gear 16 is used for turning to, makes right side conical groove apron 28 with left side conical groove apron 13 slides to the left and right sides simultaneously.
This embodiment is when concrete implementation, drive when transmission link 9 slides left drive left side bell mouth apron 13 slides left, drive when left side bell mouth apron 13 slides left side drive rack 14 slides left simultaneously, left side drive rack 14 slides left simultaneously and drives left side apron drive gear 15 rotates, left side apron drive gear 15 rotates and drives apron leading gear 16 rotates, apron leading gear 16 rotates and drives the apron rotates from gear 17 rotates, the apron rotates from gear 17 and drives right driven rack 27 slides right, right driven rack 27 slides right and drives right side bell mouth apron 28 slides right.
In a fourth embodiment, on the basis of the first embodiment, a plurality of power transmission devices are required for use, which is complicated to operate and difficult to control, and therefore the present embodiment provides a power control mechanism to solve the above problems, specifically, a gear sliding plate 18 is fixedly connected to the bottom end of the sedimentation basin 1, an arc-shaped groove 19 is formed on the gear sliding plate 18, a control gear 20 is slidably connected to the inside of the arc-shaped groove 19, the control gear 20 is engaged with a motor driving gear 21 rotatably connected to the gear sliding plate 18, the motor driving gear 21 externally connects a power driving motor, the power driving motor externally connects a control module, the power driving motor externally connects a power supply, an internal gear 22 is fixedly connected to the gear sliding plate 18, the internal gear 22 is engaged with the control gear 20, and when the motor driving gear 21 rotates, the control gear 20 is driven to slide in the arc-shaped groove 19, the control gear 20 and the transmission connecting rod 9 are connected in a vertical sliding manner, the control gear 20 can drive the transmission connecting rod 9 to slide left and right when sliding, the control gear 20 is meshed with a scraper driving gear 23, the scraper driving gear 23 is coaxially and fixedly connected with a driven bevel gear, the driven bevel gear is meshed with a transmission bevel gear rotationally connected with the sedimentation tank 1, the transmission bevel gear is coaxially and fixedly connected with a scraper driving belt pulley, the scraper driving belt pulley is connected with a scraper driven belt pulley fixedly connected with the sludge guide scraper 12 through a belt, the scraper driven belt pulley is connected to the sludge guide scraper 12 through a transmission mechanism, the control gear 20 is meshed with a sludge scraper driving gear 24, the sludge scraper driving gear 24 is coaxially and fixedly connected with a sludge scraper driven belt pulley, and the sludge scraper driven belt pulley is connected with a sludge scraper driving belt pulley through a belt, the sludge scraper drive pulley is fixedly connected to the sludge scraper means 4.
In this embodiment, in a specific implementation, the control gear 20 and the scraper driving gear 23 are engaged at an initial position, the control module controls the power driving motor, the power driving motor rotates forward, the motor driving gear 21 drives the control gear 20 to slide leftward, the transmission link 9 slides leftward, the transmission link 9 controls the anti-clouding baffle 5 to close, the left tapered slot cover 13 and the right tapered slot cover 28 simultaneously slide leftward and rightward, respectively, when the control gear 20 slides leftward to a limit position, the control gear 20 and the internal gear 22 are disengaged, the control gear 20 is engaged with the sludge scraper driving gear 24, the control gear 20 drives the sludge scraper driving gear 24 to rotate, the sludge scraper device 4 starts to operate, and after the control module controls the power driving motor to drive the sludge scraper device 4 to operate for a certain time, the control module controls the power driving motor to start reverse rotation;
the power driving motor is reversely rotated to drive the control gear 20 and the internal gear 22 to be meshed, the motor driving gear 21 drives the control gear 20 to slide rightwards to a limit position, the transmission link 9 slides rightwards, the transmission link 9 controls the anti-turbidity baffle 5 to be opened, the left conical groove cover plate 13 and the right conical groove cover plate 28 simultaneously slide rightwards and leftwards respectively to cover the sludge collection conical groove 10, the control gear 20 and the internal gear 22 are disengaged, the control gear 20 is meshed with the scraper driving gear 23, the control gear 20 drives the scraper driving gear 23 to rotate, the scraper driving gear 23 rotates to drive the sludge guide scraper 12 to rotate, the sludge guide scraper 12 rotates to drive the sludge to go out from the sludge outlet 11, and the sludge guide scraper 12 rotates for a certain time, the control module controls the power-driven motor to start to stop rotating.
In the fifth embodiment, on the basis of the fourth embodiment, two sludge scraper devices 4 are simultaneously pushed toward the sludge collecting tapered trough 10 when the sludge scraper devices 4 are in use, which is inconvenient to control, so this embodiment provides a sludge scraper driving device, specifically, a left-side scraper guide pulley is fixedly connected to the right end of the left-side sludge scraper device 4, the left-side scraper guide pulley is connected to a left-side guide driven pulley rotatably connected to the sedimentation tank 1 through a belt, a scraper steering gear 25 is coaxially and fixedly connected to the left-side guide driven pulley, a scraper steering auxiliary gear 26 rotatably connected to the sedimentation tank 1 is engaged with the scraper steering auxiliary gear 25, a right-side scraper guide pulley is coaxially and fixedly connected to the scraper steering auxiliary gear 26, the right-side scraper guide pulley is connected to a right-side guide driven pulley through a belt, the right guide driven pulley is connected to the right sludge scraper means 4.
In specific implementation, when sludge at the bottom of the sedimentation tank needs to be cleaned, the control module controls the power driving motor to be started, the initial position control gear 20 is meshed with the scraper driving gear 23, the control module controls the power driving motor, the power driving motor rotates forwards, the motor driving gear 21 drives the control gear 20 to slide leftwards, the transmission connecting rod 9 slides leftwards, the transmission connecting rod 9 controls the anti-turbidity baffle 5 to be closed, the left conical groove cover plate 13 and the right conical groove cover plate 28 simultaneously slide leftwards and rightwards respectively, when the control gear 20 slides leftwards to a limit position, the control gear 20 is disengaged from the inner gear 22, the control gear 20 is meshed with the sludge scraper driving gear 24, the control gear 20 drives the sludge scraper driving gear 24 to rotate, the sludge scraper device 4 starts to work, and after the control module controls the power driving motor to drive the sludge scraper device 4 to work for a certain time, the control module controls the power driving motor to start reverse rotation;
the power driving motor rotates reversely, the driving control gear 20 is meshed with the internal gear 22, when the motor driving gear 21 drives the control gear 20 to slide rightwards to a limit position, the driving connecting rod 9 slides rightwards, the transmission connecting rod 9 controls the anti-turbidity baffle 5 to be opened, the left conical groove cover plate 13 and the right conical groove cover plate 28 simultaneously slide rightwards and leftwards respectively, the sludge collection conical groove 10 is covered, the control gear 20 is disengaged from the internal gear 22, the control gear 20 is meshed with the scraper driving gear 23, the control gear 20 drives the scraper driving gear 23 to rotate, the scraper driving gear 23 rotates to drive the sludge guide scraper 12 to rotate, the sludge guide scraper 12 rotates to drive sludge to go out from the sludge outlet 11, and after the sludge guide scraper 12 rotates for a certain time, the control module controls the power driving motor to start to stop rotating.
The utility model is an improvement of the existing air floatation clarification device for sewage treatment, and solves the problem of turbid supernatant after clarification in a sedimentation tank by adding a turbidity prevention baffle and a sludge scraper device; the problem that a sludge discharge port is easy to block is solved by adding the sludge guide scraper and the conical groove cover plate; the utility model discloses very big improvement work efficiency, be convenient for operation, stable in structure.
Claims (5)
1. An air flotation clarification device for sewage treatment comprises a sedimentation tank (1), an aeration tank (2) and an aeration device (3), and is characterized in that the bottom of the sedimentation tank (1) is rotatably connected with two sludge scraper devices (4), a plurality of anti-turbidity baffles (5) rotatably connected with the sedimentation tank (1) are arranged above the sludge scraper devices (4), the right ends of the anti-turbidity baffles (5) are rotatably connected with synchronous rotating connecting rods (6), one of the anti-turbidity baffles (5) is rotatably connected with a baffle driving connecting rod (7), the other end of the baffle driving connecting rod (7) is rotatably connected with a driving slide block (8) which is rotatably connected with the sedimentation tank (1), the driving slide block (8) is rotatably connected with a transmission connecting rod (9), and the transmission connecting rod (9) is rotatably connected on the sedimentation tank (1), a sludge outlet (11) is formed in the bottom of the sedimentation tank (1), and the transmission connecting rod (9) is externally connected with a driving device.
2. The air flotation clarification device for sewage treatment according to claim 1, characterized in that a sludge collection conical groove (10) is opened at the bottom of the sedimentation tank (1), the sludge outlet (11) is opened at the bottom of the sludge collection conical groove (10), a sludge guide scraper (12) is rotatably connected inside the sludge collection conical groove (10), and a driving device is connected at the bottom of the sludge guide scraper (12).
3. The air-float clarification device for sewage treatment as claimed in claim 2, the bottom of the sedimentation tank (1) is connected with a left conical groove cover plate (13) in a left-right sliding way, the lower end of the left conical groove cover plate (13) is fixedly connected with a left driving rack (14), a left cover plate driving gear (15) is meshed with the left driving rack (14) and is rotatably connected with the bottom of the sedimentation tank (1), the left cover plate driving gear (15) is engaged with a cover plate guide gear (16), the cover plate guide gear (16) is fixedly connected with a cover plate driven gear (17) through a belt mechanism, the cover plate slave gear (17) is meshed with a right driven rack (27), the right driven rack (27) is fixedly connected with a right conical groove cover plate (28) which is connected with the bottom of the sedimentation tank (1) in a left-right sliding manner, the left end of the left conical groove cover plate (13) is rotatably connected with the transmission connecting rod (9).
4. The air flotation clarification device for sewage treatment according to claim 2, characterized in that a gear sliding plate (18) is fixedly connected to the bottom end of the sedimentation tank (1), an arc-shaped groove (19) is formed in the gear sliding plate (18), a control gear (20) is slidably connected inside the arc-shaped groove (19), the control gear (20) is engaged with a motor driving gear (21) rotatably connected with the gear sliding plate (18), the motor driving gear (21) is externally connected with a driving device, an internal gear (22) is fixedly connected to the gear sliding plate (18), the internal gear (22) is engaged with the control gear (20), the control gear (20) is vertically slidably connected with the transmission connecting rod (9), a scraper driving gear (23) is engaged with the control gear (20), and the scraper driving gear (23) is connected to the sludge guide scraper (12) through a transmission mechanism, the control gear (20) is meshed with a sludge scraper driving gear (24), and the sludge scraper driving gear (24) is connected to the left sludge scraper device (4) through a belt transmission mechanism.
5. The air flotation clarification device for sewage treatment according to claim 4, characterized in that the right end of the left sludge scraper device (4) is connected with a scraper steering gear (25) which is rotatably connected with the sedimentation tank (1) through a belt transmission mechanism, the scraper steering gear (25) is engaged with a scraper steering auxiliary gear (26) which is rotatably connected with the sedimentation tank (1), and the scraper steering auxiliary gear (26) is connected to the right sludge scraper device (4) through a belt transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023064100.0U CN214059979U (en) | 2020-12-17 | 2020-12-17 | Air floatation clarifying device for sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023064100.0U CN214059979U (en) | 2020-12-17 | 2020-12-17 | Air floatation clarifying device for sewage treatment |
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| CN214059979U true CN214059979U (en) | 2021-08-27 |
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| CN202023064100.0U Active CN214059979U (en) | 2020-12-17 | 2020-12-17 | Air floatation clarifying device for sewage treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385464A (en) * | 2022-08-29 | 2022-11-25 | 寿光清源水务有限公司 | Low-disturbance underwater sedimentary deposit replacement equipment |
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2020
- 2020-12-17 CN CN202023064100.0U patent/CN214059979U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385464A (en) * | 2022-08-29 | 2022-11-25 | 寿光清源水务有限公司 | Low-disturbance underwater sedimentary deposit replacement equipment |
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