CN102814079A - Concentration system for rapidly concentrating slurry - Google Patents
Concentration system for rapidly concentrating slurry Download PDFInfo
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- CN102814079A CN102814079A CN2012103170791A CN201210317079A CN102814079A CN 102814079 A CN102814079 A CN 102814079A CN 2012103170791 A CN2012103170791 A CN 2012103170791A CN 201210317079 A CN201210317079 A CN 201210317079A CN 102814079 A CN102814079 A CN 102814079A
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- Prior art keywords
- concentration
- vacuum filtration
- vacuum
- mud
- filtration pipe
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- 239000002002 slurry Substances 0.000 title abstract description 9
- 238000003828 vacuum filtration Methods 0.000 claims abstract description 49
- 238000005086 pumping Methods 0.000 claims abstract description 20
- 239000012141 concentrate Substances 0.000 claims description 24
- 239000004744 fabric Substances 0.000 claims description 21
- 239000004576 sand Substances 0.000 claims description 14
- 238000010079 rubber tapping Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 230000005484 gravity Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 20
- 238000001914 filtration Methods 0.000 description 16
- 238000011026 diafiltration Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
The invention provides a concentration system for rapidly concentrating slurry, comprising a cylindrical concentration tank and a slurry pumping pipeline located at the bottom of the cylindrical concentration tank, wherein a vacuum filtration pipe is arranged at the part of the concentration tank, which is 1/3-1/5 of the depth from a tank bottom; the bracket is arranged on a side wall of the concentration tank and is used for supporting the vacuum filtration pipe; an external connector of the vacuum filtration pipe is arranged on the wall of the concentration tank; the vacuum filtration pipe extends out of the concentration tank through the external connector of the vacuum filtration pipe, and is connected with an air compressor through a three-way connector and a vacuumizing device; a valve and a vacuum meter are arranged on a water guide pipe between the three-way connector and the vacuumizing device; and a valve and an air pressure meter are arranged on an air pumping pipe between the three-way connector and the air compressor. The vacuum filtration pipe is in a spiral annular shape and is wound in the same plane; a gap of 50-60 cm is reserved between a pipeline of the outermost ring and the tank wall of the concentration tank; and compared with a method for purely utilizing self-gravity effect to realize slurry concentration, the concentration system provided by the invention can realize the slurry concentration by the combined action of gravity and negative-pressure pressure difference, so that the concentration efficiency is greatly improved.
Description
Technical field
The present invention relates to mud concentration technology, a kind of specifically concentrated fast concentration systems of mud that is used for.
Background technology
In order to improve river and lake water quality, to guarantee normal flood carrying capacity in river course and navigation ability, large-scale dredging and desilting engineering are all being carried out in the lake of China, river course.Also can produce a large amount of abandoned project mud when the city tunnel engineering is used the slurry shield excavation simultaneously, these engineering mud moisture contents are high, and density is low, is difficult to direct utilization.Existing processing method has the mud-water separation technology through cyclonic separation, plate compression, perhaps in the stockyard, precipitates, storing technology.There are problems such as the land occupation area is big, processing cost is high, equipment has high input in these technological major parts.Therefore, according to process requirements, need before using these prior aries, concentrate decrement, to improve the efficient of handling to engineering mud.
Conventional concentrator often uses in the processing of sewage plant sludge, but because the output of engineering mud is big, and the speed of generation is fast, the requirement that concentrates is high, and conventional concentrator is difficult on disposal ability, meet the demands.Conventional concentration technique is meant mud is placed concentration basin; Utilize the relative density difference between the solid particle and water in the mud to realize the gravity concentration method of mud-water separation; Conventional concentrator is to advance mud pipe, supernatant downflow weir, bed mud drain, mud scraper, stirring grid by armored concrete concentration basin, center to constitute, and operating load is generally 50～90 kg/m
2D, the cycle that concentrates, it was long to concentrate the cycle greater than 12 h.Therefore, for the dehydration of a large amount of engineering mud, must seek method for concentration fast and efficiently.According to this engineering demand, developed and be used for the concentration systems that mud concentrates fast, utilize the anti-stifled vacuum filtration principle of becoming silted up to promote mud to concentrate fast, to realize the quick decrement of mud, improve mud conditioning efficient, reduce the mud conditioning cost.
Summary of the invention
The present invention seeks to realize that for a kind of concentration systems that mud concentrates fast that is used for is provided mud concentrates fast, dwindle mud and dispose the occupation of land scale, reduce follow-up mud capacity, improve treatment effeciency, guarantee engineering smooth implementations such as desilting, shield tunnel.
To achieve these goals; The technical scheme that the present invention takes is: a kind of concentrated fast concentration systems of mud that is used for; Comprise concentration basin and the extraction mud pipe road that is positioned at the concentration basin bottom, concentration basin is provided with the vacuum filtration pipe at 1/3-1/5 degree of depth place at the bottom of the pond, on the concentration basin sidewall support is set; In order to support the vacuum filtration pipe; Concentrate on the pool wall and leave vacuum filtration pipe external tapping, the vacuum filtration pipe extends to outside the concentration basin through vacuum filtration pipe external tapping, and links to each other with air compressor machine with vacuum extractor through three-way interface; Aqueduct between three-way interface and the vacuum extractor is provided with valve and vacuum meter, and the pump tracheae between three-way interface and the air compressor machine is provided with valve and air gauge.
Said vacuum filtration pipe is ring-type in the shape of a spiral, is coiled in the same plane, and adjacent channel is 40-50cm at interval, and outmost turns pipeline and concentration basin pool wall be 50-60cm at interval, and the vacuum filtration pipe coiling number of turns is by the internal diameter decision of concentration basin.
Said vacuum filtration Guan Yousi partly constitutes, and is followed successively by vacuum-pumping tube, geotechnological cloth bag, layer of sand, geotechnological cloth bag from inside to outside; Vacuum-pumping tube overcoat one deck geotechnique cloth bag prevents that sand from getting in the pipe, and layer of sand possesses permission water and sees through and intercept the diafiltration ability that mud particle passes through as filtering layer, by geotechnological cloth bag parcel.Utilize sand as the material of forming filtering layer, choose D
15Be layer of sand control particle diameter (D
15Expression accounts for the particle size values of 15% correspondence of total amount less than the sand grains of certain particle diameter), d
85Be mud control particle diameter (d
85Expression accounts for the particle size values of 85% correspondence of total amount less than the sand grains of certain particle diameter), control D during the design filtering layer
15/ d
85≤5, guarantee that filtering layer possesses permission water steady seepage and mud particle is intercepted the diafiltration ability outside filtering layer;
Said vacuum-pumping tube is processed by galvanized iron conduit; Diameter is 50-70mm, is drilled with the treatment hole that diameter is 8-10mm on the vacuum-pumping tube tube wall, to transmit negative pressure and drainage; Pitch-row 50mm; Rounded projections arranged, vacuum-pumping tube part tube wall with holes overcoat one deck geotechnique cloth bag, its effective aperture is slightly less than sand particle minimum grain size and possesses enough resistance to tensions.
The effective aperture of said geotechnological cloth bag is slightly smaller than the minimum grain size of filtering layer particle and possesses enough resistance to tensions; Geotechnique's cloth bag is through end sealing, and the other end is realized sealing with the mode that the clamping hoop type flexible pipe joint is fixed on the vacuum-pumping tube, whenever twines galvanized wire at a distance from 50-70mm on the geotechnological cloth bag, guarantees the stability and the globality of filtering layer.
Said support is made up of the steel truss of cross intersection, and support designs according to the load size that the vacuum filtration pipe produces, and support and vacuum filtration pipe are by cross fastener overlap joint, bolt.
Said concentration basin top is cylindric, and the bottom is funnel-form, and effective depth is 5-7m, and diameter is 6-8m, and the concentration basin bottom sloping is set to 1:6-1:4.
The vacuum filtration pipe is connected with air compressor machine with vavuum pump through three-way interface.The operation vavuum pump carries out suction filtration when concentrating, and plane, vacuum filtration pipe place forms a uniform negative pressuren zone, and mud particle and flco be rapid subsidence, gathering under gravity and differential pressure action; Water is drawn out of in the mud; Mud particle is intercepted outside the vacuum filtration pipe, builds up to form the mud skin, when the mud skin hinders the water discharge; Close vavuum pump interface valve; Open air compressor machine interface valve, carry out backwash to vacuum filtration pipe pump gas, with accumulating in vacuum filtration pipe mud skin stripping on every side to recover the diafiltration ability of filtering layer through air compressor machine; The mud skin that blows off accumulates in the concentration basin bottom, and the high concentration slurry district is formed on the concentration basin bottom, continues to collect the highly enriched mud in bottom through the extraction mud pipe road.
Compared with prior art, advantage of the present invention is:
(1) compare the method that simple dependence deadweight effect realizes that mud concentrates, concentration systems provided by the invention realizes that through gravity and the acting in conjunction of negative pressure pressure reduction mud concentrates, and has promoted thickening efficiency significantly;
(2) the vacuum filtration pipe in the shape of a spiral annular configuration in same plane, can in concentration basin, form the uniform zone of negaive pressure, the effective area that can provide mud to carry out diafiltration is to greatest extent reserved enough spaces for backwash and dense mud to the bottom sedimentation simultaneously;
(3) filtering layer is configured according to the mud grating, possesses to allow in the mud moisture to infiltrate and mud particle is intercepted the diafiltration ability on the filtering layer surface;
(4) to the filtering layer stifled problem of can becoming silted up, design backwash technique, avoided the filtering layer stifled problem that lost efficacy of becoming silted up.
Description of drawings
Fig. 1: the present invention is used for the concentration systems structural representation that mud concentrates fast;
Fig. 2: vacuum filtration tubular construction sketch map;
Fig. 3: vacuum filtration pipe generalized section.
Wherein: 1, concentration basin; 2, support; 3, vacuum filtration pipe; 4, extraction mud pipe road; 5, vacuum filtration pipe external tapping; 6, valve; 7, three-way interface; 8, pump tracheae; 9, aqueduct; 10, air gauge; 11, vacuum meter; 12, vacuum extractor; 13, air compressor machine; 14, vacuum-pumping tube; 15, geotechnological cloth bag; 16, layer of sand.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done explanation further.
Fig. 1: the present invention is used for the concentration systems structural representation that mud concentrates fast, Fig. 2: vacuum filtration tubular construction sketch map, Fig. 3: vacuum filtration pipe generalized section.With reference to Fig. 1-3, a kind of concentrated fast concentration systems of mud that is used for comprises concentration basin 1 and the extraction mud pipe road 4 that is positioned at concentration basin 1 below; Concentration basin 1 top is cylindric; The bottom is funnel-form, and effective depth is 6m, and diameter is 7m; Concentration basin 1 bottom sloping is set to 1:5, and vacuum filtration pipe 3 is fixed at the bottom of the pond at the 1.5m place; Support 2 is set on the concentration basin sidewall, and support 2 is made up of the steel truss of cross intersection, and support and vacuum filtration pipe 3 are by cross fastener overlap joint, bolt.Leave vacuum filtration pipe external tapping 5 on concentration basin 1 wall; Vacuum filtration pipe 3 extends to outside the concentration basin 1 through vacuum filtration pipe external tapping 5; And link to each other with air compressor machine 13 with vacuum extractor 12 through three-way interface 7; Aqueduct 9 between three-way interface 7 and the vacuum extractor 12 is provided with valve 6 and vacuum meter 11, and the pump tracheae 8 between three-way interface 7 and the air compressor machine 13 is provided with valve 6 and air gauge 10.Vacuum filtration pipe 3 is ring-type in the shape of a spiral, is coiled in the same plane, and vacuum filtration pipe caliber is 15cm, pipeline coiling 3 circles, and outmost turns pipeline and concentration basin pool wall be 60cm at interval, and the adjacent channel spacing is set to 45cm; Vacuum filtration pipe 3 is made up of four parts, is followed successively by vacuum-pumping tube 14, geotechnological cloth bag 15, layer of sand 16, geotechnological cloth bag 15 from inside to outside; Vacuum-pumping tube 14 diameters are 60mm, and vacuum-pumping tube overcoat one deck geotechnique cloth bag 15 outwards is that diameter is the geotechnological cloth bag 15 of 15cm again, and the filling particle diameter is that 0.5-1mm, thickness are the sand of 5cm between two-layer geotextiles; Layer of sand possesses permission water and sees through and intercept the diafiltration ability that mud particle passes through as filtering layer, by geotechnological cloth bag 15 parcels.Geotechnique's cloth bag 15 is through end sealing, and the other end is realized sealing with the mode that the clamping hoop type flexible pipe joint is fixed on the vacuum-pumping tube, whenever twines galvanized wire at a distance from 60mm on the geotechnological cloth bag, guarantees the stability and the globality of filtering layer.Vacuum-pumping tube 14 is processed by galvanized iron conduit; Diameter is 60mm, is drilled with the treatment hole that diameter is 9mm on the vacuum-pumping tube tube wall, to transmit negative pressure and drainage; Pitch-row 50mm; Rounded projections arranged, vacuum-pumping tube part tube wall with holes overcoat one deck geotechnique cloth bag, its effective aperture is slightly less than sand particle minimum grain size and possesses enough resistance to tensions.
Adopt the above-mentioned concentration systems that mud concentrates fast that is used for, Jiangsu one bottom mud in lake is carried out desilting, the density of dredging mud is 1.1g/cm
3Through conveyer slurry transportation to grid is about the 2cm vibratory sieve aboard ship, filters out mud particle impurity; Mud after the filtration injects concentration basin continuously, and the operation vavuum pump carries out suction filtration when concentrating, and plane, vacuum filtration pipe place forms a uniform negative pressuren zone; Mud particle and flco be rapid subsidence, gathering under gravity and differential pressure action, and water is drawn out of in the mud, and mud particle is intercepted outside the vacuum filtration pipe; Build up and form the mud skin; When the mud skin hinders the water discharge, close vavuum pump interface valve, open air compressor machine interface valve; Carry out backwash through air compressor machine to vacuum filtration pipe pump gas, with accumulating in vacuum filtration pipe mud skin stripping on every side to recover the diafiltration ability of filtering layer; The mud skin that blows off accumulates in the concentration basin bottom, and the high concentration slurry district is formed on the concentration basin bottom, continues to collect the highly enriched mud in bottom through the extraction mud pipe road.Compare the method that simple dependence deadweight effect realizes that mud concentrates, the present invention realizes that through gravity and the acting in conjunction of negative pressure pressure reduction mud concentrates, and has promoted thickening efficiency significantly.
Claims (7)
1. one kind is used for the concentration systems that mud concentrates fast; Comprise concentration basin (1) and be positioned at the extraction mud pipe road (4) of concentration basin (1) bottom; It is characterized in that: concentration basin (1) is provided with vacuum filtration pipe (3) at 1/3-1/5 degree of depth place at the bottom of the pond; On concentration basin (1) sidewall support (2) is set,, concentrates on the pool wall and leave vacuum filtration pipe external tapping (5) in order to support vacuum filtration pipe (3); Vacuum filtration pipe (3) is outside vacuum filtration pipe external tapping (5) extends to concentration basin (1); And link to each other with air compressor machine (13) with vacuum extractor (12) simultaneously through three-way interface (7), the aqueduct (9) between three-way interface (7) and the vacuum extractor (12) is provided with valve (6) and vacuum meter (11), and the pump tracheae (8) between three-way interface (7) and the air compressor machine (13) is provided with valve (6) and air gauge (10).
2. a kind of concentration systems that mud concentrates fast that is used for according to claim 1; It is characterized in that: said vacuum filtration pipe (3) is ring-type in the shape of a spiral; Be coiled in the same plane, adjacent channel is 40-50cm at interval, and outmost turns pipeline and concentrated pool wall be 50-60cm at interval.
3. a kind of concentration systems that mud concentrates fast that is used for according to claim 1; It is characterized in that: said vacuum filtration pipe (3) is made up of four parts; Be followed successively by vacuum-pumping tube (14), geotechnological cloth bag (15), layer of sand (16), geotechnological cloth bag (15) from inside to outside; Be drilled with the treatment hole that diameter is 8-10mm, pitch-row 50mm, rounded projections arranged on vacuum-pumping tube (14) tube wall.
4. a kind of concentration systems that mud concentrates fast that is used for according to claim 3, it is characterized in that: said vacuum-pumping tube (14) is processed by galvanized iron conduit, and diameter is 50-70mm.
5. a kind of concentration systems that mud concentrates fast that is used for according to claim 3; It is characterized in that: said geotechnological cloth bag (15) is through end sealing; The other end is realized sealing with the mode that the clamping hoop type flexible pipe joint is fixed on the vacuum-pumping tube, and geotechnological cloth bag (15) is gone up every at a distance from 50-70mm winding galvanized wire.
6. a kind of concentration systems that mud concentrates fast that is used for according to claim 1, it is characterized in that: said support (2) is made up of the steel truss of cross intersection, and support (2) is overlapped bolt with vacuum filtration pipe (3) by the cross fastener.
7. a kind of concentration systems that mud concentrates fast that is used for according to claim 1, it is characterized in that: said concentration basin (1) top is cylindric, and the bottom is funnel-form, and effective depth is 5-7m, and diameter is 6-8m, and the concentration basin bottom sloping is set to 1:6-1:4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210317079.1A CN102814079B (en) | 2012-08-31 | 2012-08-31 | Concentration system for rapidly concentrating slurry |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210317079.1A CN102814079B (en) | 2012-08-31 | 2012-08-31 | Concentration system for rapidly concentrating slurry |
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| CN102814079A true CN102814079A (en) | 2012-12-12 |
| CN102814079B CN102814079B (en) | 2015-03-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961323A (en) * | 2015-07-07 | 2015-10-07 | 河海大学 | Dredged slurry dehydration method based on slurry cake permeability |
| CN106964180A (en) * | 2017-05-04 | 2017-07-21 | 台州学院 | A kind of Quick percolation apparatus of mud-water separation |
| CN109663410A (en) * | 2019-01-04 | 2019-04-23 | 河海大学 | A kind of mud abatement system and method that removable silting is intelligently cleaned |
| CN113582505A (en) * | 2021-08-04 | 2021-11-02 | 江苏科技大学 | Continuous type high-water-content mud decrement hardening system and method |
| CN113959892A (en) * | 2021-10-08 | 2022-01-21 | 南昌工学院 | Ultra-fine high-density slurry suction filtration experimental system and implementation method |
| CN115784490A (en) * | 2022-10-28 | 2023-03-14 | 中交第二航务工程局有限公司 | Pressurized dissolved air anti-blocking type engineering slurry rapid concentration equipment and process |
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| CN102557379A (en) * | 2011-12-02 | 2012-07-11 | 常熟市浩通市政工程有限公司 | Air stirring type conical hopper sludge concentration equipment with baffle plate |
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Patent Citations (6)
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| JP2005330712A (en) * | 2004-05-20 | 2005-12-02 | Fudo Constr Co Ltd | Classifying device and method |
| CN101007223A (en) * | 2006-11-10 | 2007-08-01 | 朱少华 | Silt vacuum dewatering apparatus |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961323A (en) * | 2015-07-07 | 2015-10-07 | 河海大学 | Dredged slurry dehydration method based on slurry cake permeability |
| CN104961323B (en) * | 2015-07-07 | 2017-06-09 | 河海大学 | A kind of dredging mud dewatering based on mud transdermally water |
| CN106964180A (en) * | 2017-05-04 | 2017-07-21 | 台州学院 | A kind of Quick percolation apparatus of mud-water separation |
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| CN109663410A (en) * | 2019-01-04 | 2019-04-23 | 河海大学 | A kind of mud abatement system and method that removable silting is intelligently cleaned |
| CN109663410B (en) * | 2019-01-04 | 2024-05-17 | 河海大学 | Movable clogging intelligent cleaning mud decrement system and method |
| CN113582505A (en) * | 2021-08-04 | 2021-11-02 | 江苏科技大学 | Continuous type high-water-content mud decrement hardening system and method |
| CN113582505B (en) * | 2021-08-04 | 2023-03-21 | 江苏科技大学 | Continuous type high-water-content mud decrement hardening system and method |
| CN113959892A (en) * | 2021-10-08 | 2022-01-21 | 南昌工学院 | Ultra-fine high-density slurry suction filtration experimental system and implementation method |
| CN113959892B (en) * | 2021-10-08 | 2023-06-30 | 南昌工学院 | Ultra-fine high-density concentration slurry suction filtration experimental system |
| CN115784490A (en) * | 2022-10-28 | 2023-03-14 | 中交第二航务工程局有限公司 | Pressurized dissolved air anti-blocking type engineering slurry rapid concentration equipment and process |
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| Publication number | Publication date |
|---|---|
| CN102814079B (en) | 2015-03-25 |
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