CN111995212A - Desilting mud multiple-effect combination mud-water separation system - Google Patents
Desilting mud multiple-effect combination mud-water separation system Download PDFInfo
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- CN111995212A CN111995212A CN202010997222.0A CN202010997222A CN111995212A CN 111995212 A CN111995212 A CN 111995212A CN 202010997222 A CN202010997222 A CN 202010997222A CN 111995212 A CN111995212 A CN 111995212A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000000926 separation method Methods 0.000 title claims abstract description 58
- 239000002245 particle Substances 0.000 claims abstract description 50
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 239000004576 sand Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000010419 fine particle Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004332 deodorization Methods 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 238000004062 sedimentation Methods 0.000 description 7
- 239000007790 solid phase Substances 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 208000005156 Dehydration Diseases 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
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- 239000011362 coarse particle Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
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- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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Classifications
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a multi-effect combined mud-water separation system for dredging mud, which comprises a vibrating screen, a pipeline mixer, a hydrocyclone and a dewatering screen, wherein the dewatering screen is arranged at the outlet of the hydrocyclone, the hydrocyclone is arranged at the outlet of the pipeline mixer, the pipeline mixer is arranged at the outlet of the vibrating screen, and the vibrating screen is connected with a large-particle sundry collecting device; the pipeline mixer is connected with a conditioner feeding device; and the dewatering screen is connected with a fine sand collecting device. According to the invention, the desilting slurry multi-effect combined mud-water separation system adopting the structure can effectively improve the mud-water separation efficiency through the reasonable combination of the mud-water separation equipment and the conditioner, and has the advantages of small equipment floor area, no need of deodorization equipment, continuous operation and realization of resource utilization after mud-water separation.
Description
Technical Field
The invention relates to the technical field of mud-water separation, in particular to a multi-effect combined mud-water separation system for dredging mud.
Background
The dredging of rivers and lakes necessarily generates a large amount of mud, which generally has high water content and low strength, can contain toxic and harmful substances and cannot be directly transported away or buried on site. In order to facilitate the treatment of the dredging slurry and reduce the load of the subsequent filter pressing treatment equipment, the mud-water separation of the dredging slurry on the shore is generally required. The traditional mud-water separation technology usually firstly utilizes a sedimentation tank with a large area to primarily settle mud, then the mud is pumped to a homogenization tank by a mud pump, and a curing agent is added to flocculate the mud, so that the mud-water separation is realized. The sludge-water separation technology has low treatment efficiency, has great influence on water environment and water ecology, and simultaneously faces the problems of large occupied area of equipment, high treatment cost and the like. Particularly, with the shortage of urban land, the sludge-water separation technology is more and more difficult to meet the requirements of dredging rivers and lakes around cities.
Along with the rapid development of social economy, the demand of the market on sandstone resources is increasing, and through years of large-scale exploitation, the natural sandstone resources are gradually reduced, and the sandstone price is also continuously increased. The mud produced by river and lake dredging usually contains a large amount of sand and stone materials which can be recycled, but because of the influence of human activities, the mud mostly contains heavy metals and other pollutants, so that the dredging mud can not be directly recycled after general dehydration treatment. Therefore, how to realize resource utilization of the dredging mud in the mud-water separation process becomes a target actively explored by the industry.
Patent publication No. CN108996805A proposes a multi-effect combination mud-water separation system, including week entering week leaving sedimentation tank and magnetism loading coagulation combination clarification system, adopts week entering week leaving sedimentation tank as the preliminary sedimentation tank at first and uses, accomplishes the first mud-water separation of muddy water mixed liquor, and the supernatant fluid after the separation gets into magnetism loading coagulation combination clarification system further separation. The system reduces the occupied area of the sedimentation tank while meeting the requirement of mud-water separation, so that the system has higher integration degree, the occupied area is greatly saved, and the problem of large occupied area of the sedimentation tank of the sewage treatment system is solved. However, the system still needs a sedimentation tank and a biochemical tank essentially, and the flocculant added in the mud-water separation process is easy to generate high-salt-content tail water, has great influence on the water environment and water ecology, and is not beneficial to recycling of the sandstone resources after mud-water separation. Patent publication No. CN108854256A proposes a mud-water separation equipment and method that replaces the concentration tank with the swirler, has replaced the natural precipitation of concentration tank among the prior art flow through the compulsory fractional concentration who adopts tertiary swirler for concentration classification efficiency improves greatly, and the production process is more high-efficient, stable, safe, and area dwindles greatly, has saved the engineering investment. However, the method needs a large number of installed cyclones, the total equipment installation floor area, and later equipment maintenance cost and energy consumption are correspondingly increased, and the engineering cost is not reduced.
In view of the above, it is necessary to design a multi-effect mud-water separation system for dredging mud.
Disclosure of Invention
The invention aims to provide a multi-effect sludge-water combined sludge-water separation system for dredging sludge, which can effectively improve the sludge-water separation efficiency through the reasonable combination of sludge-water separation equipment and a conditioner, and has the advantages of small equipment floor area, no need of deodorization equipment, continuous operation and realization of resource utilization after sludge-water separation.
In order to achieve the purpose, the invention provides a multi-effect combined mud-water separation system for dredging mud, which comprises a vibrating screen, a pipeline mixer, a hydrocyclone and a dewatering screen, wherein the dewatering screen is arranged at an outlet of the hydrocyclone, the hydrocyclone is arranged at an outlet of the pipeline mixer, the pipeline mixer is arranged at an outlet of the vibrating screen, and the vibrating screen is connected with a large-particle impurity collecting device;
the pipeline mixer is connected with a conditioner feeding device;
and the dewatering screen is connected with a fine sand collecting device.
Preferably, the vibrating screen is of a double-layer screen structure, the diameter of the screen hole of the upper layer screen is 8mm, and the diameter of the screen hole of the lower layer screen is 2 mm.
Preferably, the conditioner feeding device comprises a feeding bin and a vibrator, the vibrator is arranged at the bottom of the feeding bin, and a switch valve for controlling the adding amount of the conditioner is arranged on the feeding bin.
Preferably, the pipeline mixer includes charging conduit and vortex body, the vortex body sets up inside the charging conduit, the one end of charging conduit is provided with the water inlet, and the other end is provided with the delivery port, be close to on the lateral wall of charging conduit water inlet one end is provided with the charge door.
Preferably, the hydrocyclone comprises a cylindrical barrel and a conical barrel, the upper end of the conical barrel is communicated with the lower end of the cylindrical barrel, a feeding pipe is arranged at a notch at the upper end of the cylindrical barrel, an overflow pipe is arranged at the top end of the cylindrical barrel, and a bottom flow port is arranged at the bottom of the cylindrical barrel.
Preferably, the operation process of the hydrocyclone comprises the following steps:
(1) the slurry enters the hydrocyclone at a high speed through a feed pipe of the hydrocyclone, solid particles with large particle sizes in the slurry spirally move downwards along the wall of the hydrocyclone, and particles with small particle sizes and liquid do rotary motion along with the slurry;
(2) as the slurry flows from the cylindrical barrel part to the conical barrel part of the cyclone, the inner layer slurry of fine particles with small particle size changes direction and moves upwards, and is discharged from the overflow port and enters a next step of filter pressing system, while the particles with large particle size continue to move downwards along the wall of the filter and are discharged from the underflow port.
Preferably, the bottom flow port of the hydrocyclone discharges large fixed particles, fine sand with the particle size of 0.075mm-2mm, and particles with small particle size do rotary motion and are smaller than 0.075 mm.
Therefore, the multi-effect sludge-water separation system adopting the structure has the following beneficial effects:
(1) by adopting the multi-effect combination of the desilting mud-water separation equipment, the required equipment is small in quantity, the installation mode is flexible, the mud-water separation efficiency is high, the land area occupied by the system is reduced, and the continuous production can be realized;
(2) the added conditioner can passivate heavy metals in the slurry, so that the screened and dehydrated fine sand is recycled, and the problem of a large amount of secondary pollution in slurry treatment in the current dredging operation is solved while economic benefits are obtained.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a flow diagram of an embodiment of the multi-effect mud-water separation system for dredging mud of the present invention;
FIG. 2 is a schematic structural diagram of a pipeline mixer of an embodiment of the multi-effect sludge-water separation system.
Detailed Description
The technical solution of the present invention is further illustrated by the accompanying drawings and examples.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Examples
Fig. 1 is a flow chart of an embodiment of the multi-effect sludge-water separation system of the invention, and fig. 2 is a structural schematic view of a pipeline mixer of the embodiment of the multi-effect sludge-water separation system of the invention. As shown in the figure, the invention provides a multi-effect combined mud-water separation system for dredging mud, which comprises a vibrating screen 1, a pipeline mixer 2, a hydrocyclone 3 and a dewatering screen 4, wherein the dewatering screen 4 is arranged at the outlet of the hydrocyclone 3, the hydrocyclone 3 is arranged at the outlet of the pipeline mixer 2, the pipeline mixer 2 is arranged at the outlet of the vibrating screen 1, the vibrating screen 1 is connected with a large-particle sundry collecting device 5, the vibrating screen 1 is of a double-layer screen structure, the diameter of the screen hole of the upper layer screen is 8mm, the diameter of the screen hole of the lower layer screen is 2mm, when in work, a vibrating motor is used for exciting to serve as a vibration source, high-frequency vibration destroys the tension on the surface of the mud, so that solid-phase particles in the mud flowing through the screen surface are thrown and fallen under the vibration of the screen surface, and simultaneously move forwards in a linear manner, the particles with the aperture smaller than 8mm and the solid-liquid mixture fall to the lower layer through the sieve pores to become undersize materials, and the solid-phase particles with the aperture larger than 8mm are discharged from the discharge port of the upper-layer sieve mesh after continuous jumping motion. And in the same way, solid-phase particles with the aperture larger than 2mm are discharged from a discharge port of the lower-layer screen. After the double-layer vibrating screen screens out large particles with the particle sizes of more than 8mm and 2-8mm in the clear silt slurry, the solid-phase particles with the residual particle size of less than 2mm and the muddy water mixture flow out of an overflow port of the double-layer vibrating screen and enter a pipeline mixer. In particular, the screen mesh in the double-layer vibrating screen can be adjusted and replaced according to the actual composition or solid content of the mud.
The pipeline mixer 2 is connected with a conditioner feeding device 6, the conditioner feeding device 6 comprises a feeding bin and a vibrator, the vibrator is arranged at the bottom of the feeding bin, a switch valve for controlling the adding amount of the conditioner is arranged on the feeding bin, the conditioner is firstly poured into the feeding bin during adding, enters the pipeline mixer through the switch valve and is mixed with slurry, auxiliary feeding can be carried out through the vibrator arranged at the bottom of the feeding bin when the conditioner is affected with damp, the used conditioner is a key step of a mud-water separation system, and the conditioner is formed by compounding various natural minerals mainly comprising zeolite and diatomite, can promote quick flocculation separation and adsorption of mud and water, improve separation efficiency, prevent odor from overflowing, and simultaneously complex and capture heavy metals to form stable mineralized substances, and reduce the mobility and biological effectiveness of the heavy metals in bottom mud; the dewatering screen 4 is connected with a fine sand collecting device 7, and fine sand which can be recycled can be discharged.
The hydrocyclone 3 comprises a cylindrical barrel and a conical barrel, the upper end of the conical barrel is communicated with the lower end of the cylindrical barrel, a feeding pipe is arranged at the notch of the upper end of the cylindrical barrel, an overflow pipe is arranged at the top end of the cylindrical barrel, and a bottom flow port is arranged at the bottom of the cylindrical barrel.
The working process of the hydrocyclone comprises the following steps:
(1) the slurry enters the hydrocyclone at high speed through a feeding pipe of the hydrocyclone, solid particles with large particle sizes in the slurry are subjected to large centrifugal force, move towards the rear wall after overcoming liquid resistance and spirally move downwards along the wall under the combined action of the self gravity; the particles with small particle size and most of liquid do not move around with the wall of the vessel under the combined action of the self gravity because of the small centrifugal force.
(2) Along with the flowing of mud from the cylindrical barrel part of swirler to conical barrel part, the space of motion is littleer and more, and under the shrink oppression of outer coarse particle thick liquids, the direction of the fine particle inner layer ground paste that the particle size is little changes, and upward movement turns to, discharges from the overflow mouth, gets into the filter-pressing system on next step, and the granule of big particle size then continues along the spiral downward movement of wall of the vessel, discharges by the underflow mouth, what the underflow mouth discharged is big fixed granule, the particle size is the fine sand of 0.075mm-2mm, the rotary motion is made to the granule that the particle size is little, and the particle size is less than 0.075 mm.
Coarse particles with the particle size of more than 2mm in the dredging slurry are transported to other places for burning or landfill, and fine sand with the particle size of 0.075mm-2mm after being dehydrated by a dehydration sieve can be used as agricultural or building filling materials, so that the resource utilization of the dredging slurry is realized. According to the distribution of the solid-phase particle size in the dredging mud to be treated and the resource utilization requirement, a multi-stage hydrocyclone can be added into the multi-effect combined mud-water separation system for grading recycling of particles with smaller particle size. And the mud-water mixture discharged from the overflow port at the top of the hydrocyclone enters a next pressure filtration system for dehydration.
The multiple-effect of the dredging mud and water combined mud-water separation system is mainly reflected in that:
(1) compared with the series assembly of equipment with single screening particle size, the double-layer vibrating screen in the system realizes the integration of the equipment, thereby effectively reducing the floor area of the mud-water separation system;
(2) the combination use of the conditioner and the hydrocyclone can obviously improve the mud-water separation efficiency of the desilting slurry, compared with a mud-water separation system without adding the conditioner, after the conditioner and the hydrocyclone are used in combination, the mud-water separation efficiency can be improved by 15-20%, the improvement of the separation efficiency can effectively reduce the load of a subsequent filter pressing system, reduce the energy consumption of equipment and save the cost;
(3) the conditioner added in the system is formed by compounding pure natural minerals, the material is safe and environment-friendly, no obvious odor overflows in the treatment process, special deodorization equipment is not required to be arranged, clean production can be realized, and the fine sand capable of being directly recycled is obtained.
Therefore, the multi-effect sludge-water separation system adopting the structure can effectively improve the sludge-water separation efficiency through the reasonable combination of the sludge-water separation equipment and the conditioner, and has the advantages of small equipment floor area, no need of deodorization equipment, continuous operation and realization of resource utilization after sludge-water separation.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a desilting mud multiple-effect combination mud-water separation system which characterized in that:
the device comprises a vibrating screen, a pipeline mixer, a hydrocyclone and a dewatering screen, wherein the dewatering screen is arranged at an outlet of the hydrocyclone, the hydrocyclone is arranged at an outlet of the pipeline mixer, the pipeline mixer is arranged at an outlet of the vibrating screen, and the vibrating screen is connected with a large-particle impurity collecting device;
the pipeline mixer is connected with a conditioner feeding device;
and the dewatering screen is connected with a fine sand collecting device.
2. The multiple-effect combined mud-water separation system for the dredging mud of claim 1, which is characterized in that: the vibrating screen is of a double-layer screen structure, the diameter of the screen hole of the upper layer screen is 8mm, and the diameter of the screen hole of the lower layer screen is 2 mm.
3. The multiple-effect combined mud-water separation system for the dredging mud of claim 2, which is characterized in that: the conditioner feeding device comprises a feeding bin and a vibrator, wherein the vibrator is arranged at the bottom of the feeding bin, and a switch valve for controlling the adding amount of the conditioner is arranged on the feeding bin.
4. The multiple-effect combined mud-water separation system for the dredging mud of claim 3, which is characterized in that: the pipeline mixer comprises a feeding pipeline and a disturbing fluid, wherein the disturbing fluid is arranged inside the feeding pipeline, one end of the feeding pipeline is provided with a water inlet, the other end of the feeding pipeline is provided with a water outlet, and the side wall of the feeding pipeline is close to the water inlet, one end of the water inlet is provided with a feeding port.
5. The multiple-effect combined mud-water separation system for the dredging mud of claim 4, which is characterized in that: the hydrocyclone comprises a cylindrical barrel and a conical barrel, the upper end of the conical barrel is communicated with the lower end of the cylindrical barrel, a feeding pipe is arranged at a notch at the upper end of the cylindrical barrel, an overflow pipe is arranged at the top end of the cylindrical barrel, and a bottom flow port is arranged at the bottom of the cylindrical barrel.
6. The multi-effect combined mud-water separation system for dredging mud of claim 5, wherein the operation process of the hydrocyclone comprises the following steps:
(1) the slurry enters the hydrocyclone at a high speed through a feed pipe of the hydrocyclone, solid particles with large particle sizes in the slurry spirally move downwards along the wall of the hydrocyclone, and particles with small particle sizes and liquid do rotary motion along with the slurry;
(2) as the slurry flows from the cylindrical barrel part to the conical barrel part of the cyclone, the inner layer slurry of fine particles with small particle size changes direction and moves upwards, and is discharged from the overflow port and enters a next step of filter pressing system, while the particles with large particle size continue to move downwards along the wall of the filter and are discharged from the underflow port.
7. The multiple-effect combined mud-water separation system for the dredging mud of claim 6, which is characterized in that: the hydrocyclone underflow port discharges large fixed particles, fine sand with the particle size of 0.075mm-2mm, particles with small particle size do rotary motion, and the particle size is smaller than 0.075 mm.
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| CN202010997222.0A CN111995212A (en) | 2020-09-21 | 2020-09-21 | Desilting mud multiple-effect combination mud-water separation system |
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| CN202010997222.0A CN111995212A (en) | 2020-09-21 | 2020-09-21 | Desilting mud multiple-effect combination mud-water separation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837586A (en) * | 2022-05-30 | 2022-08-02 | 广东电白二建集团有限公司 | Method for recycling construction mud and waste mud of cast-in-situ bored pile |
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