CN106673394A - System and method for dewatering in slurry field - Google Patents
System and method for dewatering in slurry field Download PDFInfo
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- CN106673394A CN106673394A CN201611254589.3A CN201611254589A CN106673394A CN 106673394 A CN106673394 A CN 106673394A CN 201611254589 A CN201611254589 A CN 201611254589A CN 106673394 A CN106673394 A CN 106673394A
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- 239000002002 slurry Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 123
- 238000005189 flocculation Methods 0.000 claims abstract description 23
- 230000016615 flocculation Effects 0.000 claims abstract description 23
- 239000010865 sewage Substances 0.000 claims abstract description 4
- 230000002411 adverse Effects 0.000 claims description 22
- 230000018044 dehydration Effects 0.000 claims description 17
- 238000006297 dehydration reaction Methods 0.000 claims description 17
- 239000004744 fabric Substances 0.000 claims description 16
- 210000002275 spiral lamina Anatomy 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 4
- 239000010802 sludge Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
- 229920001282 polysaccharide Polymers 0.000 claims description 3
- 239000005017 polysaccharide Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 claims description 2
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- 239000002245 particle Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 16
- 238000000926 separation method Methods 0.000 abstract description 8
- 239000003814 drug Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000007873 sieving Methods 0.000 abstract 2
- 238000002156 mixing Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
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- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 235000019013 Viburnum opulus Nutrition 0.000 description 2
- 244000071378 Viburnum opulus Species 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 230000001360 synchronised effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
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Classifications
-
- 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
- C02F11/126—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using drum filters
-
- 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
Landscapes
- Engineering & Computer Science (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)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a system for dewatering in a slurry field. The system comprises a sieving device for removing dreg of slurry; a slurry outlet of the sieving device is connected with a flocculation concentrator; a sewage outlet of the flocculation concentrator is connected with a water collection groove; a concentrated slurry outlet of the flocculation concentrator is connected with a mixer inlet through a slurry pump; a medicine dispensing pot for configuring a slurry tackifier is connected with the mixer inlet; a mixer outlet is connected with a slurry feeding pipe of a slurry dewatering device; a mud pie outlet of the slurry dewatering device is connected with a mud inlet of a mud-water separation device; a dewatered water outlet of the slurry dewatering device is connected with the water collection groove and the medicine dispensing pot; a mud outlet of the mud-water separation device is connected with a spiral squeezing conveyor. The invention further provides a method for dewatering in the slurry field. With the adoption of the system provided by the invention, a lot of water can be rapidly removed from slurry on site; the treatment speed is 5 times or more as much as that of a conventional plate frame filtering system; the system has the advantages of small occupied area, low energy consumption, capability of being continuously operated, simplicity and reliability, long service life and good stability.
Description
Technical field
The present invention relates to a kind of system of on-site slurry dehydration, for river course, lake, drainage dredging and other approach
The discarded slurry of generation, fast dewatering process is carried out with producing in mud.
Background technology
River course, lake, drainage pipeline networks desilting be solve water body treating must Jing steps, but traditional Dredging Construction mode
Nearby landfill disposal becomes pollution source to the mud of generation, and the mud for not producing secondary pollution focuses on mode then mud
Cost of transportation is high, speed is slow, land seizure is more, becomes the bottleneck factor of restriction water body treating.
At present, the Dredging Construction mode of the non-secondary pollution that most of Dredging Construction enterprise adopts is as follows：Built first
Dam stop operation, be then used by hydraulic giant and break up bottom sludge, then by mud be drawn into tank car transport to Treatment stations storage, finally
Sedimentation concentration and filter-press dehydration are carried out in Treatment stations to fill into mud cake outward transport.This traditional operating type takes time and effort, especially
Be slurry transportation link occupy processing cost more than half.
The method that can be dehydrated to mud on the spot in desilting site remains the bottleneck of dredging operation technology.It is clear at present
Silt slurry dehydration is also no lack of and some new techniques occurs, for example, fold spiral shell machine evaporation etc., but comparatively speaking, mud at present
Dehydration production or the dewatering process with the high energy consumptions such as traditional high-pressure filteration, centrifugal force separate, reduction process speed as main flow.
First, conventional mud dewatering
There are high pressure sheet frame Filtration, sleeping spiral shell centrifugal separation, belt filter press technique using more mud dewaterion method at present
Deng.
1. high pressure sheet frame Filtration
High pressure plate-and-frame filtration is a kind of step filtering dewatering method, is typically used to compare a small amount of slurry dewatering, greatly
The plate-and-frame filtration device of type is huge, and installed power is high, needs firm carrying basis.High pressure plate-and-frame filtration is generally adapted to be fixed
Mud conditioning workshop in use, be less compliant in desilting mud output ground scene simple and crude environment use.
2. crouch spiral shell centrifugal separation
Sleeping spiral shell centrifugal separation is a kind of continuous filtering dewatering method, is generally used for little, a small amount of slurry dewatering of density,
Large-scale centrifuge is bulky, and installed power is very high, needs the basis for especially consolidating, and is not suitable for Jing and often moves place using.
Horizontal screw centrifuge is generally adapted and is used in fixed mud conditioning workshop, be not suitable for substantially desilting mud output it is existing
The simple and crude environment of field is used.
3. belt filter press technique
Belt filter press technique is a kind of filtering dewatering method of continuous way, is typically used to compare at the slurry dewatering of easy filtration
Reason.Large-scale belt filter press is bulky, and installation accuracy is high, and the technical requirements of maintenance maintenance are high, need firm carrying base
Plinth.Belt filter pressing is generally adapted and is used in fixed mud conditioning workshop, is less compliant in the simple and crude of desilting mud output ground
Environment is used.
2nd, slurry dewatering new method
Above-mentioned mud dewaterion method is the widest main stream approach of current domestic application.In recent years, some new mud take off
Water method also constantly emerging in large numbers, than it is more typical be exactly folded spiral shell press dewatering method.
The main body of folded spiral shell squeezing dewatering machine is layered on top of each other by retainer ring and travelling ring, the mistake that helical axis is formed therethrough
Filter device, leading portion is concentrating part, and back segment is de-watering section, and what is formed between retainer ring and travelling ring filters the pitch of seam and helical axis
Taper into from concentrating part to de-watering section.Mud after flocculation concentration, by helical axis de-watering section is shifted onto in concentrating part, is being advanced
During taper into filter seam and pitch, and under the barrier effect of back pressure plate, produce greatly intrinsic pressure, volume is not
It is disconnected to reduce, reach the purpose of abundant dehydration.
Folded spiral shell press dewatering acc power is less, device volume is little, is increasingly becoming the head of Sewage Plant dehydrating residual active sludge
Choosing, but because its dehydration depends on the filter formed between retainer ring and travelling ring seam abjection moisture, when there is sand in mud
When, tiny sand can be extruded in filter seam, cause filter seam to be stretched, and mud and water fold spiral shell directly from filtering in seam out
Press dewatering just cannot be carried out；After in addition sand is entered in filter seam, on retainer ring, travelling ring and helical axis ditch is ground
Groove, retainer ring, travelling ring and helical axis are just scrapped and need to change.Due to a large amount of sands of generally existing in desilting mud,
And it be substantially totally unrealistic that these sands is removed, therefore the clear slurry dewatering effect of folded spiral shell machine is very unstable, main
The life-span is very short because sand weares and teares to want part, so being still difficult in adapt to large-scale production and application at present.
The content of the invention
The technical problem to be solved in the present invention be how to realize a large amount of desilting mud produce ground scene quick, low energy consumption,
Stably it is dehydrated.
In order to solve above-mentioned technical problem, the system that a kind of on-site slurry dehydration is provided is the technical scheme is that, its
It is characterised by：Including the sifter for being removed the gred to mud, the slurry outlet connection flocculation concentration device of sifter, flocculate dense
The outlet of sewer connection water leg of contracting device, the concentration slurry outlet Jing slush pumps connection mixer entrance of flocculation concentration device, is used for
The dispensing canister connection mixer entrance of configuration mud viscosifier, mixer outlet connects with the mud feed pipe of mud dewatering apptss
Connect, the mud inlet of the walk outlet connection device for separating mud and water of mud dewatering apptss, the abjection water out of mud dewatering apptss connects
Connect water leg and dispensing canister, the mud mouth connection Spiral extrusion conveyor of device for separating mud and water；
Mud dewatering apptss include rotating cylinder and the driving means for driving rotating cylinder to rotate；Rotating cylinder is by rotating cylinder straight length and turns
Cylinder Taper Pipe section is formed by connecting, and the rotating cylinder straight length other end is provided with abjection water overfall, and the rotating cylinder Taper Pipe section other end is provided with walk and goes out
Mouthful；Rotating cylinder straight length and rotating cylinder Taper Pipe section inwall are equipped with spiral lamina, and it is exported to walk from abjection water overfall in rotating cylinder
Between formed through helical duct；Mud feed pipe is from abjection water overfall insertion rotating cylinder straight length；
Device for separating mud and water includes screen drum and the driving means for driving screen drum to rotate；Screen drum two ends are provided with baffle plate, and one
The baffle plate at end is provided with mud inlet, and the baffle plate of the other end is provided with mud mouth；The screen cloth face of screen drum encompasses spiral shell by stainless steel silk
Rotation shape is constituted.
Preferably, the driving means for driving rotating cylinder to roll include being located at the roller of the cylinder bottom, described
Rotating cylinder outer wall is supported on roller circumferentially arranged with rotation track, rotating cylinder by rotation track, roller connection motor.Roller
Rotating cylinder is driven to rotate along rotation track by the frictional force with rotation track.
Preferably, the range of speeds of the rotating cylinder is 0~10rpm.
Preferably, the cone angle of the rotating cylinder Taper Pipe section is 10 °~90 °.
Preferably, the helical duct insertion of the through that the spiral lamina in the rotating cylinder straight length is formed extends to overflow
Outlet, the helical duct insertion of the through that the spiral lamina in rotating cylinder Taper Pipe section is formed extends to walk outlet.
Preferably, in the rotating cylinder Taper Pipe section, from the one end being connected with rotating cylinder straight length to walk export, helical duct by
Taper contracting to diminish.
Preferably, the depth of the plug-in type mud feed pipe insertion rotating cylinder straight length is the 20% of rotating cylinder flow development length
~100%；Spacing is kept between the plug-in type mud charging pipe outer wall and abjection water overfall.
Preferably, the adverse current for being provided with for assembling and guiding abjection water to flow to overfall direction in the rotating cylinder Taper Pipe section
Inner core.
Preferably, the adverse current inner core is in funnel-form, is that one section of continuous contraction or point multistage shrink；Adverse current inner core perisporium is close
Cloth is easy to the hole that water body is entered.
It is highly preferred that spiral lamina open interior diameter of the maximum gauge of the adverse current inner core less than or equal to rotating cylinder straight length
D, a diameter of 1.1d~10d of rotating cylinder straight length, adverse current inner core minimum diameter is 0.05d~0.5d, and adverse current inner core length is to turn
0.2~2 times of cylinder Taper Pipe segment length, rotating cylinder flow development length is 1~10 with the diameter ratio of rotating cylinder straight length, the pitch of spiral lamina
For 0.05d~0.5d.
Preferably, the driving means for driving screen drum to rotate include being located at the roller of the screen drum bottom, described
Screen drum outer wall is supported on roller circumferentially arranged with guide-track groove, screen drum by guide-track groove, roller connection motor；Roller passes through
Screen drum is driven to rotate along guide-track groove with the frictional force of guide-track groove；
Preferably, a row or multi-row recoil cleaning sprayer is distributed with outside the screen drum in the axial direction, recoil cleaning sprayer
It is connected to provide the air inlet pipe of compressed air and/or for providing the water inlet pipe with pressure rinse water, so as to the non-of screen drum
Filtering position carries out from outside to inside sieve aperture dredging.
Preferably, the mud mouth bottom is provided with bucket.
Preferably, the range of speeds of the screen drum is 0~10rpm.
Preferably, the section of the stainless steel silk is trapezoidal.
Preferably, the bar shaped screen hole for being formed between the stainless steel silk of adjacent turn is interior narrow outer wide structure.
Preferably, it is outside on the screen cloth face to be provided with axial brace rod.
Preferably, the draw ratio of the screen drum is 1~10.
Present invention also offers a kind of method of on-site slurry dehydration, the system being dehydrated using above-mentioned on-site slurry, it is special
Levy and be, comprise the following steps：
Step 1：Add flocculant, mix homogeneously simultaneously to flow in flocculation concentration device after the screened device slagging-off of mud, flocculate dense
The sewage that contracting device is separated is discharged to water leg, and the concentration mud Jing slush pumps that flocculation concentration device is separated drain into blender
In；
Step 2：The viscosifier of dispensing canister configuration, and mix homogeneously are added in blender, the mud of viscosity is formed；
Step 3：The mud of viscosity is entered in mud dewatering apptss, because the particle surface in mud has viscosity, is being turned
With in the mud rotary course in it, the granule in mud mutually bonds cylinder, roll to rub and grow up into walk, and walk is swept along
Water Jing rotating cylinders cone tube section ends walk outlet extrusion, into the mud inlet of device for separating mud and water；Simultaneously walk is in rotary course
In, the abjection water under own wt extruding flows out from the abjection water overfall of rotating cylinder straight length end；Abjection water part conveying
To in dispensing canister, remainder is discharged to water leg, and the water in water leg is discharged on the spot or used as erosion and deposition water；
Step 4：In device for separating mud and water, screen drum rotation, the water that walk is swept along is sized away inflow water leg, walk patch
Screen cloth face rolling, and using spiral helicine stainless steel silk provide thrust move to mud mouth direction, final dewatering sludge from
Mud mouth is discharged；
Step 5：The walk discharged from device for separating mud and water is finally dehydrated into clod through Spiral extrusion conveyor, and fills
Car is transported outward.
Preferably, in the step 2, viscosifier are the mixed of one or more in polyacrylonitrile, polyacrylamide, polysaccharide
Compound.
The system that the present invention is provided overcomes the deficiencies in the prior art, and on the spot scene is a large amount of, quick de- can to realize mud
Water, the system for comparing the conventional sheet frame filtration treatment of more equal installed power, the system processing speed reaches more than 5 times, relatively
Folded spiral shell dewaterer reaches more than 2.5 times, and floor space is only the 50% of conventional sheet frame filtration treatment method, and energy consumption is low, energy
Continuous operation, simple and reliable, long service life, good stability.
Description of the drawings
Fig. 1 is the system schematic of on-site slurry dehydration；
Fig. 2 is the section shaft side figure of mud dewatering apptss 1/4；
Fig. 3 is device for separating mud and water shaft side figure；
Fig. 4 is screen cloth face structural representation.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than restriction the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Fig. 1 is the system structure diagram of on-site slurry dehydration, the system of described on-site slurry dehydration by sifter 1,
Flocculation concentration device 2, water leg 3, slush pump 4, blender 5, quenched medicament dispensing canister 6, mud dewatering apptss 7, mud-water separation dress
Put the composition such as 8, Spiral extrusion conveyor 9.
Sifter 1 is used to remove the gred mud, the slurry outlet connection flocculation concentration device 2 of sifter 1, flocculation concentration device
2 outlet of sewer connection water leg 3, the connection entrance of blender 5 of concentration slurry outlet Jing slush pumps 4 of flocculation concentration device 2, makes up a prescription
Tank 6 connects the entrance of blender 5, and the outlet of blender 5 is connected with the mud feed pipe of mud dewatering apptss 7, mud dewatering apptss 7
The mud inlet of walk outlet connection device for separating mud and water 8, the abjection water out of mud dewatering apptss 7 connects water leg 5 and makes up a prescription
Tank 6, the mud mouth connection Spiral extrusion conveyor 9 of device for separating mud and water 8.
The porch of flocculation concentration device 2 is provided with mixing chamber, and mixing interior is provided with agitator 21, and mixing chamber is additionally provided with flocculant and adds
Entrance.The exit of flocculation concentration device 2 top is provided with gap 22, and the bottom of flocculation concentration device 2 is provided with concentration slurry outlet 23.
Dispensing canister 6 is used to be allocated to the viscosifier of mud thickening.
With reference to Fig. 2, mud dewatering apptss 7 are by plug-in type mud feed pipe 71, abjection water overfall 72, rotating cylinder straight length
73rd, the first return idler 74, the first active roller 75, rotation track 76, the outlet 78, adverse current inner core of rotating cylinder Taper Pipe section 77, walk
79 grades are constituted.
Rotating cylinder is formed by connecting by rotating cylinder straight length 73 and rotating cylinder Taper Pipe section 77, and the other end of rotating cylinder straight length 73 is provided with abjection water
Overfall 72, the other end of rotating cylinder Taper Pipe section 77 is provided with walk outlet 78.The cone angle of rotating cylinder Taper Pipe section 77 is at 10 °~90 °.Rotating cylinder is straight
Pipeline section 73 and the inwall of rotating cylinder Taper Pipe section 77 are equipped with spiral lamina, the spiral shell of the through that the spiral lamina in rotating cylinder straight length 73 is formed
Rotation passage insertion extends to overflow outlet 72, and the helical duct of the through that the spiral lamina in rotating cylinder Taper Pipe section 77 is formed is passed through
It is logical to extend to walk outlet 78, from abjection water overfall 72 to the spiral that through is formed between walk outlet 78 in rotating cylinder
Passage.
Cylinder bottom is provided with the first return idler 74 and the first active roller 75, and rotating cylinder outer wall is provided with rotation track 76, turns
The rotation track 76 of cylinder is bearing on the first return idler 74 and the first active roller 75.Roller with rotation track 76 by rubbing
Wipe power drive rotating cylinder to rotate, the first active roller 75 provides the power needed for rotation, the first return idler 74 passively rotates, and and
First active roller 75 supports together rotating cylinder.By the rotating speed for adjusting the rotating speed of the first active roller 75 to control rotating cylinder, rotating speed
Scope is 0~10rpm.
Plug-in type mud feed pipe 11 is inserted in rotating cylinder straight length 73 from abjection water overfall 72, and insertion depth is that rotating cylinder is straight
The 20%~100% of pipeline section 73.Plug-in type feed pipe 71 is used to for mud to send into charging in rotating cylinder, by helical duct, mud
Interior granule mutually bonds, roll to rub and grow up into walk, and walk rolls the stillpot for growing up and being deposited in portion under water, is turning
Helical duct forms the motive force from rotating cylinder straight length 73 to the direction of rotating cylinder Taper Pipe section 77 during cylinder rotation, promotes walk to go out to walk
Mouth 78 is moved.Walk is moved to after rotating cylinder Taper Pipe section 77, and its inner passage gradually tapers up and diminishes, and finally extends to walk outlet
78, walk extrudes rotating cylinder and is dehydrated, and finally discharges rotating cylinders from walk outlet 78.
In rotating cylinder Taper Pipe section 77, adverse current inner core 79 is in funnel-form (near one end of walk outlet 78 for adverse current inner core 79
Opening is less), gather thereon aperture, and the abjection water of adverse current enters adverse current inner core 79 to the direction stream of abjection water overfall 72 from aperture
It is dynamic.Spacing is kept between the outer wall of plug-in type mud feed pipe 71 and abjection water overfall 72, allows abjection water to overflow from abjection water
Head piece 72 smoothly flows out.
The internal diameter of adverse current inner core 79 can be that one section of continuous contraction or point multistage shrink, and the maximum diameter of adverse current inner core 79 is little
In or equal to spiral lamina open interior diameter d, a diameter of 1.1d~10d of rotating cylinder straight length 73 of rotating cylinder straight length 73, in adverse current
A diameter of 0.05d~0.5d at cylinder 79 is minimum, the length of adverse current inner core 79 is 0.2~2 times of the length of rotating cylinder Taper Pipe section 77, and rotating cylinder is straight
Length of pipe section is 1~10 with the diameter ratio of rotating cylinder straight length, and spiral lamina pitch is 0.05d~0.5d.
When mud dewatering apptss are used, the first active roller 75 drives rotating cylinder along the low speed rotation of rotation track 76, plays auxiliary
Support the first return idler 74 also synchronous rotary of rotating cylinder；After mud is through adding glutinous medicament adjustment, fed by plug-in type mud
Pipe 71 enters rotating cylinder straight length 73, and the mud that rotarily drives of rotating cylinder rotates together, and the spiral formed by the spiral lamina in rotating cylinder leads to
Road is constrained, and mud to walk exports the propulsion of 78 directions；During rotation, with sand present in mud as core, mud
The flco of middle viscosity is adsorbed onto more and more in these cores becomes walk, and walk is grown up as snowball, and walk is continuous
The deadweight of increase extrudes in water therein；Walk is moved to after rotating cylinder Taper Pipe section 77, and the passage that the spiral lamina in it is formed is gradually
Contraction diminishes, and walk is squeezed and be further dehydrated, and finally discharges Taper Pipe sections 77 from walk outlet 78；Muddy water is in rotating cylinder Taper Pipe section 77
While movement to walk outlet 78, muddy water liquid level is lifted to the height adverse current backward more than spiral lamina, and adverse current inner core 79 is in
Funnel-form, gather thereon aperture, and the abjection water of adverse current enters adverse current inner core 79 to the direction flowing of abjection water overfall 72 from aperture；
In rotating cylinder straight length 73, deviate from the spiral lamina reverse flow that water is crossed step by step in it, from abjection water overfall 72 rotating cylinder is flowed out, it is real
Now deviate from the unpowered discharge of water.
Under this dewatering type, with constantly growing up for walk, walk surface area is doubled and redoubled, in walk adhesion mud
The speed of granule is faster, be as snowball in acceleration, therefore device can be easily achieved it is quick, be located on a large scale
Reason mud, while the gravity that dehydration relies primarily on walk itself extrudes to complete, therefore the energy consumption being dehydrated is very low.
With reference to Fig. 3, device for separating mud and water 8 is by mud inlet 81, baffle plate 82, screen drum 83, guide-track groove 84, the second active roller
85th, the group such as the second return idler 86, mud mouth 87, bucket 88, screen cloth face 89, recoil cleaning sprayer 810, air inlet/water inlet pipe 811
Into.
The two ends of screen drum 83 are equipped with baffle plate 82, and mud inlet 81 is provided with the baffle plate 82 of one end, are provided with the baffle plate 82 of the other end
Mud mouth 87.The bottom of mud mouth 87 is provided with bucket 88.
Circumferentially arranged with two circle guide-track grooves 84, the second active roller 85, the second driven rolling outside the screen cloth face 89 of screen drum 83
The arrangement of wheel 86 and the bottom of screen drum 83, screen drum 83 is bearing on the second active roller 85, the second return idler 86 by guide-track groove 84.
Roller drives screen drum 3 to rotate by the frictional force with rail groove 84, and is controlled by adjusting the rotating speed of the second active roller 85
The rotating speed of screen drum 83, the range of speeds of screen drum 83 is 0~10rpm.
With reference to Fig. 4, screen cloth face 89 is constituted using the stainless steel silk 812 of trapezoidal cross-section around curl, and adjacent turn is not
The bar shaped screen hole 814 formed between rust steel wire is interior narrow outer wide structure.When walk moving direction and the circular spiral of stainless steel silk
When direction is identical, propulsion walk is provided when the helical form stainless steel silk on screen cloth face 89 rotates toward moving that the direction of mud mouth 87 is moved
Power.
It is outside equipped with axial brace rod 813 on screen cloth face 89, to ensure the intensity in screen cloth face.
The draw ratio of screen drum 83 is 1~10.
When device for separating mud and water is used, the second active roller 85 drives screen drum 83 to rotate along guide-track groove 84, plays Auxiliary support
The return idler 86 of effect is also driven synchronous rotary；After taking the screen drum 83 that cement group enters rotation from mud inlet 81, screen drum
83 rotate with cement group is taken, and the water that walk is carried is leached by the sieve aperture on screen cloth face 89；Baffle plate 82 and the spiral of screen cloth face 89
The thrust that line rotation is produced makes walk move to the direction of mud mouth 87, and rolls out from mud mouth 87 outer defeated to bucket 88.
In order to prevent the sieve aperture on silt blocking screen wire side 89, the drainage capacity of screen drum 83 is affected, in the outer axle of screen drum 83
Line directional spreding has a row or multi-row recoil cleaning sprayer 810, and recoil cleaning sprayer 810 provides pressure by air inlet/water inlet pipe 811
Contracting air/band pressure rinse water, to the non-filtered position of screen drum 83 sieve aperture dredging is carried out from outside to inside.
Below with specific embodiment, the invention will be further described.
Embodiment 1
A kind of system of on-site slurry dehydration, as shown in Figure 1.
A) by 60m3The somewhere desilting mud of aqueous the 98.0% of/H enters into sifter, and screening out may blocking or damage pipe
The slag thing of pipeline equipment, mud flows into agitator tank and adds flocculant poly iron chloride, and agitator mixes flocculant and mud
It is uniform and carry out flocculation reaction, overflow water outlet 30m3/ H, the mud of bottom concentration is aqueous to reach 96.0%；
b)30m3The concentration mud of/H enters slurry dewatering by the lifting of pump and the solution of addition polyacrylonitrile after mixing
Device, overflow water outlet 18.6m during rotation3/ H, fraction overflow water is back to the dispensing canister of quenched viscosifier, and walk enters
Enter device for separating mud and water；
C) in device for separating mud and water, rotary screen shaft screen removes the water swept along in walk, obtains aqueous 75.5% walk
4.9m3/H。
D) Spiral extrusion conveyor finally removes a small amount of water, obtains aqueous 72.7% clod 4.4m3/H。
Embodiment 2
A kind of system of on-site slurry dehydration, as shown in Figure 1.
A) by 60m3The somewhere desilting mud of aqueous the 96.0% of/H enters into sifter, and screening out may blocking or damage pipe
The slag thing of pipeline equipment, mud flows into agitator tank and adds flocculant poly iron chloride, and agitator mixes flocculant and mud
It is uniform and carry out flocculation reaction, overflow water outlet 12m3/ H, the mud of bottom concentration is aqueous to reach 95.0%；
b)48m3The concentration mud of/H is de- into mud after mixing by the lifting of pump and the solution of addition polyacrylamide
Water installations, overflow water outlet 30m during rotation3/ H, fraction overflow water is back to the dispensing canister of quenched viscosifier, and walk enters
Enter device for separating mud and water；
C) in device for separating mud and water, rotary screen shaft screen removes the water swept along in walk, obtains aqueous 75.0% walk
9.6m3/H。
D) Spiral extrusion conveyor finally removes a small amount of water, obtains aqueous 72.4% clod 8.7m3/H。
Embodiment 3
A kind of system of on-site slurry dehydration, as shown in Figure 1.
A) by 60m3The somewhere desilting mud of aqueous the 94.0% of/H enters into sifter, and screening out may blocking or damage pipe
The slag thing of pipeline equipment, mud flows into agitator tank and adds flocculant poly iron chloride, and agitator mixes flocculant and mud
It is uniform and carry out flocculation reaction, overflow water outlet 4m3/ H, the mud of bottom concentration is aqueous to reach 93.6%；
b)56m3The concentration mud of/H is filled after mixing by the lifting of pump and the solution of addition polysaccharide into slurry dewatering
Put, overflow water outlet 35m during rotation3/ H, fraction overflow water is back to the dispensing canister of quenched viscosifier, and walk enters mud
Water separation device；
C) in device for separating mud and water, rotary screen shaft screen removes the water swept along in walk, obtains aqueous 74.3% walk 14m3/
H。
D) Spiral extrusion conveyor finally removes a small amount of water, obtains aqueous 72.3% clod 13m3/H。
In the step of various embodiments above a), sifter has used vibration separation screen, the slag thing for screening out include broken plastic sheet,
Broken fiber, handstone, little fragment of brick and cement block etc.；Overflow water is entered the unstable shadow of flow and solid content by desilting mud
Ring, the flow being previously mentioned is the specified treating capacity of certain concrete system, is average discharge in 8 hours, and the mud being previously mentioned is aqueous
Rate is the meansigma methodss in 8 hours.
In various embodiments above step b), overflow Water circulation amount sets according to the demand of dispensing canister, slurry material composition
Composition needs to match the concrete kind of quenched medicament and addition, is generally specifically determined by compatibility mechanism.
In various embodiments above step d), the content of organic matter in the moisture content of the dewatering cake for finally giving and former mud
Correlation, the lower dewatering cake moisture content for obtaining of the content of organic matter is lower.
Using the system of the present invention, realize to on-site slurry fast dewatering, compare the conventional plate of more equal installed power
The system of frame filtration treatment, the system processing speed reaches more than 5 times (folding spiral shell dewaterer relatively, reach more than 2.5 times), and accounts for
Ground area is only the 50% of conventional sheet frame filtration treatment method, achieves preferable technique effect.
Claims (10)
1. the system that a kind of on-site slurry is dehydrated, it is characterised in that：Including the sifter (1) for being removed the gred to mud, sieve
Divide slurry outlet connection flocculation concentration device (2) of device (1), outlet of sewer connection water leg (3) of flocculation concentration device (2), flocculation
Concentration slurry outlet Jing slush pumps (4) connection blender (5) entrance of concentrator (2), for configuring making up a prescription for mud viscosifier
Tank (6) connects blender (5) entrance, and blender (5) outlet is connected with the mud feed pipe of mud dewatering apptss (7), and mud takes off
The mud inlet of walk outlet connection device for separating mud and water (8) of water installations (7), the abjection water out of mud dewatering apptss (7) connects
Connect water leg (5) and dispensing canister (6), mud mouth connection Spiral extrusion conveyor (9) of device for separating mud and water (8)；
Mud dewatering apptss (7) include rotating cylinder and the driving means for driving rotating cylinder to rotate；Rotating cylinder is by rotating cylinder straight length (73)
It is formed by connecting with rotating cylinder Taper Pipe section (77), rotating cylinder straight length (73) other end is provided with abjection water overfall (72), rotating cylinder Taper Pipe section
(77) other end is provided with walk outlet (78)；Rotating cylinder straight length (73) and rotating cylinder Taper Pipe section (77) inwall are equipped with spiral lamina,
The helical duct of formation through between (78) is exported in rotating cylinder from abjection water overfall (72) to walk；Mud feed pipe
(71) from abjection water overfall (72) insertion rotating cylinder straight length (73)；
Device for separating mud and water (8) includes screen drum (83) and the driving means for driving screen drum (83) to rotate；Screen drum (83) two ends
Baffle plate (82) is provided with, the baffle plate (82) of one end is provided with mud inlet (81), and the baffle plate (82) of the other end is provided with mud mouth (87)；
The screen cloth face (89) of screen drum (83) is made up of stainless steel silk (812) around curl.
2. the system that a kind of on-site slurry as claimed in claim 1 is dehydrated, it is characterised in that：It is described for driving rotating cylinder to rotate
Driving means the first roller for including located at the cylinder bottom, the rotating cylinder outer wall circumferentially arranged with rotation track (76),
Rotating cylinder is supported on the first roller by rotation track (76), the first roller connection motor；First roller by with rotation
The frictional force of track (76) drives rotating cylinder to rotate along rotation track (76)；
The driving means for driving screen drum (83) to rotate include being located at the second roller of the screen drum (83) bottom, described
Screen drum (83) outer wall is supported on the second roller circumferentially arranged with guide-track groove (84), screen drum (83) by guide-track groove (84), and second
Roller connects motor；Second roller drives screen drum (83) to revolve along guide-track groove (84) by the frictional force with guide-track groove (84)
Turn.
3. the system that a kind of on-site slurry as claimed in claim 1 is dehydrated, it is characterised in that：The rotating speed model that the rotating cylinder is rolled
Enclose for 0~10rpm, the range of speeds of the screen drum (83) is 0~10rpm.
4. the system that a kind of on-site slurry as claimed in claim 1 is dehydrated, it is characterised in that：In the rotating cylinder Taper Pipe section (77)
The adverse current inner core (79) for being provided with for assembling and guiding abjection water to flow to overfall (72) direction.
5. the system that a kind of on-site slurry as claimed in claim 4 is dehydrated, it is characterised in that：The adverse current inner core (79) is in leakage
It is bucket-shaped, it is that one section of continuous contraction or point multistage shrink；Adverse current inner core (79) perisporium gathers and is easy to the hole of water body entrance.
6. the system that a kind of on-site slurry as claimed in claim 1 is dehydrated, it is characterised in that：The stainless steel silk (812)
Section is trapezoidal；The bar shaped screen hole (814) formed between the stainless steel silk (812) of adjacent turn is interior narrow outer wide structure.
7. the system that a kind of on-site slurry as claimed in claim 1 is dehydrated, it is characterised in that：Set outside the screen cloth face (89)
There is axial brace rod (813).
8. the system that a kind of on-site slurry as claimed in claim 1 is dehydrated, it is characterised in that：Screen drum (83) outer axis
Directional spreding has a row or multi-row recoil cleaning sprayer (810), and the cleaning sprayer that recoils (810) is connected to provide compressed air
Air inlet pipe and/or for provide the water inlet pipe with pressure rinse water.
9. a kind of method that on-site slurry is dehydrated, be using the on-site slurry dehydration as described in any one of claim 1~8
System, it is characterised in that comprise the following steps：
Step 1：Add flocculant, mix homogeneously simultaneously to flow in flocculation concentration device (2) after the screened device of mud (1) slagging-off, flocculate
The sewage that concentrator (2) is separated is discharged to water leg (3), the concentration mud Jing mud that flocculation concentration device (2) is separated
Pump (4) is drained in blender (5)；
Step 2：The viscosifier of dispensing canister (5) configuration, and mix homogeneously are added in blender (5), the mud of viscosity is formed；
Step 3：The mud of viscosity is entered in mud dewatering apptss (7), because the particle surface in mud has viscosity, in rotating cylinder
With in the mud rotary course in it, the granule in mud mutually bonds, roll to rub and grow up into walk, and walk is swept along
Water Jing rotating cylinders Taper Pipe section (77) end walk outlet (78) extrusion, into the mud inlet (81) of device for separating mud and water (8)；While mud
Roll into a ball in rotary course, the abjection water under own wt extruding, from abjection water overfall (72) of rotating cylinder straight length (73) end
Flow out；An abjection water part is transported in dispensing canister (5), and remainder is discharged to water leg (3), and the water in water leg (3) is just
Ground discharge is used as erosion and deposition water；
Step 4：In device for separating mud and water (8), screen drum (83) rotation, the water that walk is swept along is sized away inflow water leg (5),
Walk againsts screen cloth face (89) rolling, and the thrust provided using spiral helicine stainless steel silk is moved to mud mouth (87) direction,
Final dewatering sludge is discharged from mud mouth (87)；
Step 5：The walk discharged from device for separating mud and water (8) is finally dehydrated into clod through Spiral extrusion conveyor (9), and
Entrucking is transported outward.
10. the method that a kind of on-site slurry as claimed in claim 9 is dehydrated, it is characterised in that：In the step 2, viscosifier
For the mixture of one or more in polyacrylonitrile, polyacrylamide, polysaccharide.
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| CN201611254589.3A CN106673394B (en) | 2016-12-30 | 2016-12-30 | System and method for on-site dehydration of slurry |
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| CN201611254589.3A CN106673394B (en) | 2016-12-30 | 2016-12-30 | System and method for on-site dehydration of slurry |
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Cited By (5)
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| CN109879577A (en) * | 2019-04-17 | 2019-06-14 | 湖北天银循环经济发展有限公司 | Sludge dewatering system |
| CN114057441A (en) * | 2021-12-21 | 2022-02-18 | 浙江理工大学 | Device and method for regenerating filling material by using solid waste |
| CN116282816A (en) * | 2023-03-03 | 2023-06-23 | 浙江省绍兴生态环境监测中心 | Ecological wetland sludge deposit separation processing apparatus |
| CN117510031A (en) * | 2024-01-08 | 2024-02-06 | 河北环境工程学院 | Microwave sludge dewatering treatment device |
| WO2024050570A1 (en) * | 2022-08-30 | 2024-03-07 | Vietti Slurrytec (Pty) Ltd | Slurry treatment apparatus |
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