CN108423956B - River and lake silt in-situ repairing and purifying device - Google Patents
River and lake silt in-situ repairing and purifying device Download PDFInfo
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- CN108423956B CN108423956B CN201810443150.8A CN201810443150A CN108423956B CN 108423956 B CN108423956 B CN 108423956B CN 201810443150 A CN201810443150 A CN 201810443150A CN 108423956 B CN108423956 B CN 108423956B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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Abstract
The invention discloses a river and lake silt in-situ repairing and purifying device which comprises a ship body and repairing and purifying equipment arranged on the ship body. The repairing and purifying device comprises an air compressor, an upflow pipe, a downflow pipe, a diagonal flow pipe, a gas-water separator, a ventilation device and a sludge purifying chamber; the riser pipe extends underwater to the position below the river/lake bottom sludge; the air compressor is communicated with the lower part of the upflow pipe through an air pipeline; the gas-water separator is arranged on the upper part of the riser, the gas-water separator is communicated with the sludge purifying chamber, the sludge purifying chamber is connected with the microorganism inoculating instrument, the down pipe is arranged below the sludge purifying chamber and is communicated with the sludge purifying chamber, and the down pipe extends to the upper part of the sludge at the bottom of the river/lake underwater. The invention adopts a gas lift lifting mode to lift the sludge to the ship body for parallel purification treatment, and then flows back to the bottom of the river and the lake in situ, without a storage yard, is highly sensitive to the soft bottom sludge, and can avoid over-digging caused by deep digging, floating sludge and sludge diffusion.
Description
Technical Field
The invention relates to the technical field of purification of river and lake sludge, in particular to an in-situ repair purification device for river and lake sludge.
Background
Along with the wide development of water environment treatment engineering, a great deal of dredging mud is generated in river and lake dredging engineering, and the existing dredging mud treatment method is lagged, so that a great deal of resources are consumed for a long time, and the environment is influenced. At present, most of dredging sludge is abandoned in land throwing and filling areas or low-lying areas, some of the dredging sludge occupies an original fishpond or cultivation area, the formed land is difficult to develop and utilize due to extremely low strength, the dredging soil with high water content has poor water permeability, consolidation can be completed only by a few years or even longer under the action of dead weight, the occupation time is long, the repeated cultivation of the land is severely restricted, and precious land resources are wasted.
Meanwhile, the sediment is rich in organic matters and heavy metals, and is released in a large amount after dredging and stirring, so that the tail water contains more organic matters, nutrient salts or heavy metals. The pollutants flow back into rivers and lakes to pollute the surrounding water. The long-term formed dredging sludge treatment technology has the problems of land occupation, environmental pollution and the like, and the ecological dredging sludge treatment technology for saving land resources and reducing environmental pollution is explored to be in very good line with the development direction. According to the prediction of relevant experts, the problem of occupation of the dredging mud in treatment will become a constraint problem for river and lake management engineering development in China.
The technical method of the treatment of the dredging mud is difficult to adapt to the current situation of China, and a new treatment technology is required to be explored according to the national conditions of China. The foreign treatment of dredging mud mainly adopts the methods of mud throwing treatment, hydraulic filling and land making, mechanical dehydration and solidification treatment, but the mud throwing treatment has very high land preparation cost, and in many places, it is difficult to find enough mud storage fields for storing the mud, so that the smooth progress of engineering construction is affected. The hydraulic reclamation land needs to take the atmosphere to carry out foundation treatment, which is expensive in cost, and has the defects of long construction period and difficult entering of construction machinery. The mechanical dehydration can be carried out by using various types of filter presses, and the sludge becomes a mud cake after dehydration, so that the transportation of the sludge is facilitated. However, due to the huge amount of dredging engineering, the price of common dehydration equipment is high, the dehydration efficiency is low, and the requirements of large-scale dredging engineering are difficult to meet. Therefore, the special technology and equipment for in-situ repair and purification of the sludge are needed, and the sludge is repaired in-situ, so that pollutants are reduced and then conveyed back to the bottom of the river and the lake. The method for treating the dredging mud overseas has the main problems of high cost and engineering investment, and is not suitable for the basic national conditions of high energy price and relatively high mechanical equipment and low labor cost in China. Therefore, developing a dredging mud in-situ repair and purification treatment method and equipment suitable for the conditions of China is a starting point for solving the current dredging mud problem of China.
Disclosure of Invention
Aiming at the prior art, the invention provides an in-situ repair and purification device for river and lake sludge, which adopts a gas lift lifting mode to lift the river bottom sludge to a ship body, carries out microorganism purification treatment on the sludge, and then returns to the bottom of the river and lake in situ; the invention adopts in-situ repair, does not need a storage yard, is highly sensitive to soft bottom mud, and can avoid over-digging caused by deep digging, floating mud up and mud diffusion.
The invention is realized by the following technical scheme: the in-situ repair and purification device for river or lake bottom sludge is used for purifying river or lake bottom sludge and comprises a ship body positioned on the water surface and repair and purification equipment arranged on the ship body. The repairing and purifying device comprises an air compressor, an upflow pipe, a downflow pipe, a diagonal flow pipe, a gas-water separator, a waste flow purifier, a ventilation device and a sludge purifying chamber. The riser extends underwater to below the river/lake bottom sludge for lifting the sludge. The air compressor is communicated with the lower part of the updraft tube through an air pipeline. The gas-water separator is arranged at the upper part of the riser pipe, and a gas phase chamber and a liquid phase chamber are arranged in the gas-water separator; the gas phase chamber is communicated with the ventilation device, and the silt chamber is communicated with the diagonal flow pipe. The air compressor, the riser pipe and the gas-water separator form an air lifter for lifting the silt, separating gas and liquid in the silt, and respectively separating and purifying to finish the purification of the silt at the river bottom or the lake bottom. The sludge chamber is communicated with the sludge purifying chamber through a diagonal flow pipe, the sludge purifying chamber is connected with a microorganism inoculating instrument for inoculating microorganisms to the sludge, and the sludge at the river bottom is purified by the microorganisms. The down pipe is arranged below the silt purifying chamber and is communicated with the silt purifying chamber, and the down pipe extends to the upper side of the silt at the bottom of the river/lake underwater, so that the silt flows back to the bottom of the river or the lake. The ship body is provided with a power generator for providing power for all equipment components on the ship body.
Further, a flow discarding device is arranged between the inclined flow pipe and the liquid phase chamber, and is communicated with the river or the lake through a flow discarding purifying chamber and used for purifying the river or the lake water in the initial stage of sludge purification, and the purified initial river or the lake water is directly discharged back to the river or the lake, so that the river or the lake is prevented from being polluted by the river or the lake in the initial stage of purification.
Further, the silt purifying chamber comprises an inoculation pond and a purifying pond which are sequentially arranged from top to bottom, and a plurality of inoculation barriers which are parallel to each other, vertically downward and respectively communicated with the microorganism inoculation instrument are arranged in the inoculation pond, so that the silt and microorganisms are fully contacted and uniformly mixed. The bottom surface of the inoculation pond is communicated with the purification pond, and the sludge return opening is arranged on the bottom surface of the purification pond, so that sludge after the full decomposition reaction of microorganisms flows from the sludge return opening to the down pipe and returns to the river bottom or the lake bottom.
Further, a recovery chamber is also arranged on the ship body and is used for recovering massive solid pollutants buried under the sludge. The top of the silt purifying chamber is provided with a filter screen, one end of the filter screen is connected with the inclined flow pipe, and the other end of the filter screen extends downwards to the recycling chamber in an inclined way, so that the screened massive solid pollutants flow into the recycling chamber in an inclined way, and are subjected to subsequent treatment, and the situation that the massive solid pollutants return to the river bottom or the lake bottom again to pollute the river or the lake is avoided.
Further, the filter screen comprises a fine screen part and a coarse screen part, the fine screen part is arranged above the sludge purifying chamber, and a coarse grain descending pipe which is communicated with the diagonal flow pipe and extends downwards is arranged between the sludge purifying chamber and the recovery chamber; the coarse screen part is arranged above the coarse grain downlink pipe, so that coarse grain components and fine components in the sludge are separated, the coarse grain components are discharged back to the river bottom or the lake bottom through direct sedimentation, the phenomenon of sludge resuspension is avoided, the sludge amount required to be treated by microorganisms is reduced, and the sludge treatment speed is improved.
Further, the hull comprises a floating bridge and a conical shield which is arranged along the edge of the floating bridge and is large in upper part and small in lower part, the conical shield extends downwards to be close to river/lake bottom sludge, the floating bridge floats on the water surface, and the repairing and purifying equipment is fixedly arranged on the floating bridge. The cone-shaped shield is arranged along the edge of the floating bridge in a surrounding mode to form a cylinder shape with a big top and a small bottom. Preferably, the down tube extends downwardly below the conical shield.
Further, a flexible barrier is arranged on one side, close to the down pipe, of the floating bridge along the edge of the floating bridge, and the flexible barrier extends underwater to the surface of the sludge.
Further, the ventilation device is internally provided with an air purifying device for purifying the gas separated by the gas-water separator, so that air pollution is avoided.
Preferably, a hull engine is arranged on the hull to provide power for the hull, and the hull is not required to be towed by an external power ship.
Further, the ship body is also provided with a GPS positioning system, and the GPS positioning system is in wireless communication connection with a remote monitoring center, so that the remote positioning of the ship body is facilitated. The GPS positioning system can be combined with a ship engine to realize remote operation of the in-situ repair purifying device.
Compared with the prior art, the invention has the following advantages:
(1) The in-situ repair and purification device for river and lake sludge provided by the invention adopts a gas lift lifting mode to lift the river bottom sludge to the ship body, carries out microbial purification treatment on the sludge, and then returns to the bottom of the river and lake in situ; the invention adopts in-situ repair, does not need a storage yard, is highly sensitive to soft bottom mud, and can avoid over-digging, floating mud up, mud diffusion and back-siltation caused by deep digging.
(2) The in-situ repair and purification device for the sludge in the river and the lake provided by the invention adopts the microorganism purification treatment of the sludge directly on the ship body, so that organic substances in the sludge can be effectively degraded, the degraded sludge can be returned to the bottom of the river and the lake in situ, the omission of floating sludge caused by the return sludge is avoided, and meanwhile, the cost of the sludge transportation and storage yard is reduced.
(3) The in-situ repair purification device for river and lake sludge provided by the invention adopts the filter screen to filter and separate the sludge, separates the fine components, the coarse particle components and the massive solid pollutants, carries out multistage treatment, and avoids the pollution caused by the fact that the solid pollutants return to the river bottom or the lake bottom again.
(4) The in-situ repair purification device for river and lake sludge provided by the invention is convenient to install, has moderate cost, does not need to drain water and is not affected by weather.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 3 of the present invention;
FIG. 3 is a partial enlarged view of embodiment 3 of the present invention;
FIG. 4 is a schematic structural diagram of embodiment 4 of the present invention;
wherein: 1-ship body, 2-air compressor, 3-riser, 4-down pipe, 5-diagonal flow pipe, 6-gas-water separator, 7-ventilation device, 8-silt clean room, 9-microorganism inoculator, 10-power generator, 11-discarding device, 12-recovery room, 13-filter screen, 14-fine screen part, 15-coarse screen part, 16-coarse grain down pipe, 17-conical shield, 18-flexible barrier, 19-air purification device, 20-GPS positioning system, 81-inoculation pool, 82-purification pool, 83-inoculation barrier.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
The microorganism inoculation apparatus 9, the gas-water separator 6, the air compressor 2, the reject device 13, the reject purifier, and the air purifier 19 are commercially available devices, and therefore, the internal structure thereof will not be described in detail in the present invention. Meanwhile, the microorganism inoculation instrument 9 can select an anaerobic microorganism inoculation instrument 9 or an oxygen-limited microorganism inoculation instrument 9 according to the air circulation condition of the sludge purifying chamber 8; the microorganism inoculation apparatus 9 inoculates the sludge with microorganisms in a usual manner, and thus, the detailed description thereof will not be given in the present invention.
Example 1
As shown in fig. 1, an in-situ repair and purification device for sludge at the bottom of a river or a lake is used for purifying sludge at the bottom of the river or the lake and comprises a ship body 1 positioned on the water surface and repair and purification equipment arranged on the ship body 1. The repairing and purifying device comprises an air compressor 2, an upflow pipe 3, a downflow pipe 4, an inclined flow pipe 5, a gas-water separator 6, a ventilation device 7 and a sludge purifying chamber 8. The riser pipe 3 extends underwater to below the river/lake bottom sludge for lifting the sludge. The air compressor 2 is communicated with the lower part of the updraft tube 3 through an air pipeline. The gas-water separator 6 is arranged at the upper part of the upflow pipe 3, and a gas phase chamber and a liquid phase chamber are arranged in the gas-water separator 6; the gas phase chamber is communicated with a ventilation device 7, and the silt chamber is communicated with an inclined flow pipe 5. The air compressor 2, the upflow pipe 3 and the gas-water separator 6 form an air lifter for lifting sludge, separating gas and liquid in the sludge, and respectively separating and purifying to finish the purification of sludge at the river bottom or the lake bottom. The sludge chamber is communicated with a sludge purifying chamber 8 through a diagonal flow pipe 5, the sludge purifying chamber 8 is connected with a microorganism inoculating instrument 9 for inoculating microorganisms to the sludge, and the sludge at the river bottom is purified by the microorganisms. The down pipe 4 is arranged below the silt purifying chamber 8 and is communicated with the silt purifying chamber 8, and the down pipe 4 extends to the upper side of the silt at the river/lake bottom underwater so as to enable the silt to flow back to the river bottom or the lake bottom. The hull 1 is provided with a power generator 10 for powering the various equipment components of the hull 1.
In the river or lake dredging process, the ship body 1 is towed to a dredging point through a power ship, and the air compressor 2 is started to introduce air into the lower end of the upflow pipe 3. Since a large amount of bubbles enter the riser pipe 3, the density of the sludge in the riser pipe 3 is reduced, the sludge in the riser pipe 3 rises to the upper end of the riser pipe 3 under the hydraulic pressure of water flow, and the gas and the sludge are separated by the gas-water separator 6. The gas is discharged through a ventilator 7 communicating with the upper end. The sludge enters a sludge purifying chamber 8 through a diagonal flow pipe 5, and is inoculated with microorganisms through a microorganism inoculating instrument 9, so that organic pollutants in the sludge are degraded and purified by microorganisms, and after the degradation is completed, the sludge is discharged to the river bottom or the lake bottom through a downlink pipe 4, and the in-situ repair and purification of the sludge at the river bottom or the lake bottom are completed. In the sludge repairing and purifying process, the power ship tows the ship body 1 to slowly move so as to repair and purify the sludge along the river bottom or the lake bottom.
Example 2
This example was modified on the basis of example 1 in that: a flow discarding device 11 is arranged between the diagonal flow pipe 5 and the liquid phase chamber, the flow discarding device 11 is communicated with a river or a lake through a flow discarding purifying device and is used for purifying river water or lake water in the initial stage of sludge purification, and the purified initial river water or lake water is directly discharged back to the river or lake, so that the river or lake water in the initial stage of purification is prevented from being polluted. In the initial stage of starting the in-situ repair purification device, river water or lake water and a small amount of floating mud are in the upflow pipe 3, so that the mud purification is not needed. However, since a small amount of floating mud or dregs are often mixed in the river or lake water, the mixture is directly discharged into the river or lake water, which causes pollution to the river or lake water, and thus the mixture is discharged into the river or lake water after purification treatment. The waste stream device 11 and the waste stream purifying device are initial waste stream purifying devices sold in the market and comprise a water inlet, a water outlet and a water outlet, wherein the water outlet is provided with the waste stream purifying device for purifying waste stream. After the river water or lake water in the riser pipe 3 is completely discharged, the water outlet is closed, and the sludge directly enters the inclined flow pipe 5 and the sludge purifying chamber 8 through the water inlet and the water outlet of the flow discarding device 11, so that the degradation and purification of the sludge are realized.
Other portions of this embodiment are substantially the same as those of embodiment 1, and thus will not be described in detail.
Example 3
This embodiment is an improvement over embodiment or 2 in that: as shown in fig. 2 and 3, the sludge purifying chamber 8 includes an inoculation pool 81 and a purifying pool 82 which are sequentially arranged from top to bottom, and a plurality of inoculation barriers 83 which are parallel to each other, vertically downward and respectively communicated with the microorganism inoculation instrument 9 are arranged in the inoculation pool 81, so that the sludge is fully contacted with the microorganisms and uniformly mixed. The bottom surface of the inoculation pond 81 is communicated with the purification pond 82, and the sludge return opening is arranged on the bottom surface of the purification pond 82, so that the sludge after the full decomposition reaction of microorganisms flows from the sludge return opening to the down pipe 4 and returns to the river bottom or the lake bottom.
Other portions of this embodiment are substantially the same as those of embodiment or 2, and thus will not be described in detail.
Example 4
The improvement of the embodiment is based on any one of the embodiments 1 to 3, and the improvement is that: as shown in fig. 4, the hull 1 is further provided with a recovery chamber 12 for recovering solid contaminants in a block form buried under the sludge. A filter screen 13 is arranged above the silt purifying chamber 8, one end of the filter screen 13 is in contact with the inclined flow pipe 5, and the other end of the filter screen 13 obliquely extends downwards to the recycling chamber 12, so that the screened massive solid pollutants obliquely flow into the recycling chamber 12 for subsequent treatment, and the solid pollutants are prevented from returning to the river bottom or the lake bottom again to pollute the river or the lake. In river bottom or lake bottom weak sludge, massive solid pollutants often exist, wherein small-sized massive solid pollutants and light massive solid pollutants can rise to the upper end of the riser pipe 3 along with the sludge, but cannot be degraded in a microbial degradation mode. When the light massive solid pollutants are plastic or rubber products, the self-cleaning is more difficult to carry out through the self-cleaning capability of rivers or lakes due to difficult degradation, so that the purification treatment is needed through a recovery treatment mode, and the massive solid pollutants are prevented from flowing back to the rivers or lakes to pollute the rivers or lakes again.
Other portions in this embodiment are substantially the same as any of embodiments 1 to 3, and thus will not be described in detail.
Example 5
This example was modified on the basis of example 4 in that: the filter screen 13 comprises a fine screen part 14 and a coarse screen part 15, the fine screen part 14 is arranged above the sludge purifying chamber 8, and a coarse grain descending pipe 16 which is communicated with the inclined flow pipe 5 and extends downwards is arranged between the sludge purifying chamber 8 and the recovery chamber 12; the coarse screen part 15 is arranged above the coarse-grain downlink pipe 16, so that coarse grain components and fine components in the sludge are separated, the coarse grain components are discharged back to the river bottom or the lake bottom through direct sedimentation, the phenomenon of sludge resuspension is avoided, the sludge amount required to be treated by microorganisms is reduced, and the sludge treatment speed is improved. Because the coarse particles have larger granularity, the coarse particles can be directly discharged back to the river bottom or the lake bottom through sedimentation to carry out backfill of the river bottom or the lake bottom, thereby avoiding the occurrence of back siltation.
Other portions of this embodiment are substantially the same as those of embodiment 4, and thus will not be described in detail.
Example 6
The improvement of the embodiment is based on any one of the embodiments 1 to 5, and the improvement is that: the ship body 1 comprises a floating bridge and a conical shield 17 which is arranged along the edge of the floating bridge and is big in top and small in bottom, the conical shield 17 extends downwards to be close to river/lake bottom silt, the floating bridge floats on the water surface, and the repairing and purifying equipment is fixedly arranged on the floating bridge. The conical shield 17 is arranged along the edge of the floating bridge in a surrounding manner to form a cylinder shape with a big top and a small bottom. Preferably, the down tube 4 extends downwardly below the conical shroud 17. The conical shield 17 can limit the purified silt fine components and the returned coarse particle components from flowing back to the river bottom or the lake bottom, so that the silt is prevented from diffusing, and the turbidity of river water or lake water is avoided.
Preferably, the side of the pontoon adjacent to the down tube 4 is further provided with a flexible barrier 18 along the pontoon edge, the flexible barrier 18 extending underwater to the surface of the sludge.
Other portions in this embodiment are substantially the same as any of embodiments 1 to 5, and thus will not be described in detail.
Example 7
The improvement of the embodiment is based on any one of the embodiments 1 to 6, and the improvement is that: the ventilation device 7 is internally provided with an air purifying device 19 for purifying the gas separated by the gas-water separator 6 to avoid air pollution.
When the sludge rises in the riser pipe 3, the sludge is fully contacted with air, and aeration treatment is carried out on the sludge in the sludge lifting process, so that pollutants in the sludge are oxidized, and volatile substances in the sludge are separated and can be carried out along with air flow. Due to the presence of a large amount of air pollutants in the volatile substances in the aeration treatment and sludge, such as: organic matters such as volatile methane and the like are subjected to anaerobic fermentation. Therefore, the gas separated in the gas-water separator 6 is purified by the air purifying device 19 and then discharged, so that the discharged gas is prevented from polluting the air. The air purifying device 19 may be a purifying device made of an adsorption material such as activated carbon, a photocatalytic purifying device, or the like.
Other portions in this embodiment are substantially the same as any of embodiments 1 to 6, and thus will not be described in detail.
Example 8
This embodiment is an improvement over any of embodiments 1 to 7 in that: the ship body 1 is also provided with a GPS positioning system 20, and the GPS positioning system 20 is in wireless communication connection with a remote monitoring center, so that the remote positioning of the ship body 1 is facilitated. The ship body 1 is provided with a ship body 1 engine for providing kinetic energy for the movement of the ship body 1 without external traction ship. Meanwhile, the GPS positioning system 20 is used for positioning the ship body 1, and a remote monitoring center can be used for monitoring the in-situ repair purification device to monitor the progress of repair purification of river and lake sludge.
Other portions in this embodiment are substantially the same as any of embodiments 1 to 7, and thus will not be described in detail.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (7)
1. The utility model provides a river lake silt normal position repair purifier for river or lake bottom silt's purification treatment, including hull (1) and the repair clarification plant who sets up on hull (1) on the surface of water, its characterized in that: the repairing and purifying equipment comprises an air compressor (2), an upflow pipe (3), a downflow pipe (4), an inclined flow pipe (5), a gas-water separator (6), a ventilation device (7) and a sludge purifying chamber (8); the upflow pipe (3) extends to the lower part of the river/lake bottom sludge; the air compressor (2) is communicated with the lower part of the upflow pipe (3) through an air pipeline; the gas-water separator (6) is arranged at the upper part of the upflow pipe (3), and a gas phase chamber and a liquid phase chamber are arranged in the gas-water separator (6); the gas phase chamber is communicated with a ventilation device (7); the liquid phase chamber is communicated with the sludge purifying chamber (8) through a diagonal flow pipe (5), the sludge purifying chamber (8) is connected with a microorganism inoculating instrument (9) for inoculating microorganisms to the sludge, the down pipe (4) is arranged below the sludge purifying chamber (8) and is communicated with the sludge purifying chamber (8), and the down pipe (4) extends to the upper side of river bottom sludge underwater; one end of the sludge purifying chamber (8) far away from the inclined flow pipe (5) is provided with a sludge return port communicated with the down pipe (4), and the ship body (1) is provided with a power generator (10) for providing power; the sludge purifying chamber (8) comprises an inoculation pond (81) and a purifying pond (82) which are sequentially arranged from top to bottom, and a plurality of inoculation barriers (83) which are parallel to each other, vertically downward and respectively communicated with the microorganism inoculation instrument (9) are arranged in the inoculation pond (81); the bottom surface of the inoculation pool (81) is communicated with the purification pool (82), and the mud return port is arranged on the bottom surface of the purification pool (82); the ship body (1) is also provided with a recovery chamber (12), a filter screen (13) is arranged above the sludge purifying chamber (8), one end of the filter screen (13) is in contact with the diagonal flow pipe (5), and the other end of the filter screen (13) extends downwards to the recovery chamber (12) in an inclined way; the filter screen (13) comprises a fine screen part (14) and a coarse screen part (15), the fine screen part (14) is arranged above the sludge purifying chamber (8), and a coarse grain descending pipe (16) which is communicated with the inclined flow pipe (5) and extends downwards is arranged between the sludge purifying chamber (8) and the recovery chamber (12); the coarse screen section (15) is arranged above the coarse downpipe (16).
2. The in-situ repair purification device for river and lake sludge according to claim 1, wherein: a flow discarding device (11) is arranged between the diagonal flow pipe (5) and the liquid phase chamber, and the flow discarding device (11) is communicated with a river or a lake through a flow discarding purifying chamber.
3. The in-situ repair purification device for river and lake sludge according to claim 1, wherein: the ship body (1) comprises a floating bridge and a conical shield (17) which is arranged along the edge of the floating bridge and is large at the upper part and small at the lower part, and the conical shield (17) extends downwards to be close to river/lake bottom sludge.
4. A river and lake silt in-situ maintenance and purification device according to claim 3, wherein: and a flexible barrier (18) is arranged on one side, close to the down tube (4), of the floating bridge along the edge of the floating bridge, and the flexible barrier (18) extends to the surface of the sludge underwater.
5. The river and lake sludge in-situ maintenance and purification device according to any one of claims 1-4, wherein: the ventilation device (7) is internally provided with an air purifying device (19).
6. The river and lake sludge in-situ maintenance and purification device according to any one of claims 1-4, wherein: the ship body (1) is provided with a ship body engine.
7. The river and lake sludge in-situ maintenance and purification device according to any one of claims 1-4, wherein: the ship body (1) is also provided with a GPS positioning system (20), and the GPS positioning system is in wireless communication connection with a remote monitoring center.
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| CN111439913A (en) * | 2020-04-27 | 2020-07-24 | 江阴市水利机械施工工程有限公司 | Modular all-water dredging operation system |
| CN115307978B (en) * | 2022-10-10 | 2022-12-16 | 河北省生态环境监测中心 | Sampling repair equipment and sampling repair method for water quality and sludge |
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