CN106396303A - A sewage and sludge dehydrating device coupling electroosmosis and mechanical pressure filtration - Google Patents
A sewage and sludge dehydrating device coupling electroosmosis and mechanical pressure filtration Download PDFInfo
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- CN106396303A CN106396303A CN201610458535.2A CN201610458535A CN106396303A CN 106396303 A CN106396303 A CN 106396303A CN 201610458535 A CN201610458535 A CN 201610458535A CN 106396303 A CN106396303 A CN 106396303A
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- 238000005370 electroosmosis Methods 0.000 title claims abstract description 39
- 239000010802 sludge Substances 0.000 title claims abstract description 31
- 230000008878 coupling Effects 0.000 title claims abstract description 17
- 238000010168 coupling process Methods 0.000 title claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 17
- 238000011085 pressure filtration Methods 0.000 title abstract 5
- 239000010865 sewage Substances 0.000 title abstract 2
- 230000018044 dehydration Effects 0.000 claims abstract description 57
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims description 48
- 239000010801 sewage sludge Substances 0.000 claims description 45
- 238000001035 drying Methods 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 15
- 208000005156 Dehydration Diseases 0.000 description 40
- 230000005684 electric field Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000006872 improvement Effects 0.000 description 9
- 230000000391 smoking effect Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 235000010044 Hernandia moerenhoutiana Nutrition 0.000 description 1
- 244000084296 Hernandia moerenhoutiana Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A sewage and sludge dehydrating device coupling electroosmosis and mechanical pressure filtration is disclosed. The device includes a pressure filtration container (1), an anode plate (2), a cathode plate (3) and a direct current source (4). The anode plate (2) is disposed at the upper part of the pressure filtration container (1). The cathode plate (3) is disposed at the lower part of the pressure filtration container (1). The cathode and anode of the direct current source (4) are respectively electrically connected to the anode plate (2) and the cathode plate (3). The anode plate (2) and the cathode plate (3) are provided with water outlet holes (5) on which filter cloths (5.1) are paved. The cathode plate (3) is connected to a hydraulic system (6) used for driving the cathode plate (3) to move. Through adoption of the device, sludge resistance in an anode layer is slow in increase, dehydration effects are good, and the water content distribution at the sludge thickness direction is uniform.
Description
Technical field
The present invention relates to sewage sludge process field, the sewage sludge that specifically a kind of electro-osmosis are coupled with mechanism filter-pressing takes off
Water installations.
Background technology
Mud high-moisture percentage is the bottleneck that govern specific resistance to filtration, and the high mud of moisture content is not only bulky, Er Qiesuo
The organic in a large number, heavy metal containing and harmful microorganism, easily degenerate or are discharged in environment, cause secondary pollution, for
The follow-up landfill of mud, burning, recycling etc. all adversely affect.Therefore, deeply dehydrating sludge minimizing is
Treatment of Sludge primary and foremost purpose, minimizing is the basis realizing mud other " three changes ", and mud is more dry, and subsequent treatment is disposed and got over
Favorably.
Electroosmotic dewatering technology make use of a kind of special double electrical layerses of mud presence to realize being dehydrated.Mud mud granule band
Negative electricity, and hydrone positively charged, under electric field force effect, electronegative mud granule moves toward positive plate, and positively charged water
Molecule moves toward minus plate.As new, green, the efficient solid-liquid separation technique of one kind, electroosmotic dewatering technology is due to tool
Have the advantages that good dewatering, motility be high, pollution-free, controllability is strong, receive significant attention in recent years, increasingly
Many research worker are applied in the middle of sludge dewatering, to reaching the purpose that mud is carried out with deep dehydration.
Compared with existing deeply dehydrating sludge technology (heat drying, chemical conditioning+high-pressure compressing method etc.), electroosmotic dewatering
Technology has the advantages that a series of uniquenesses, is embodied in：Good dehydrating effect, during electroosmotic dewatering, in electrification
Learn under reagentia, mud cell is subject to electricity irritation, electrolysis water directional strength is mobile to produce Brownian movement, intracellular temperature liter
Height, pressure increase so that membranolysises, and in part film, water flows out, and electroosmotic dewatering can remove traditional mechanical dehydration institute not
The part moisture that can remove, through electroosmotic dewatering, the moisture content of mud can be reduced to less than 60%；Compared with heat drying
There are certain power savings advantages, reduce the expense that sludge deep processes mummification；Only sludge reduction is dehydrated, does not change dirt
The property of mud, composition, do not increase new material, and any one follow-up sludge treating method is no affected；Processing procedure cleans,
Non-secondary pollution.
However, electroosmotic dewatering technology, as an emerging sludge dewatering technology, mainly also has problems with present：
(1) the final moisture content of dehydrated sludge still has 50%-60%, is difficult to break through 50% it is difficult to reach sludge electroosmotic high mass dryness fraction thoroughly
The technique effect of dehydration；(2), during electro-osmosis, near anode, the moisture content of mud quickly reduces, and electrochemical reaction
Crack occurs in the generation of gas and sludge cake, the contact area between sludge cake and battery lead plate reduces, lead to mud electricity
Resistance increases, and electric current declines, and dehydrating effect is deteriorated；(3), in dehydration, electric field generation electric current has electric energy and is converted into heat energy,
So that mud temperature is raised, there are in fact energy consumption problem bigger than normal；(4) mud cake porous media in a thickness direction is uneven,
Anode layer moisture percentage in sewage sludge is relatively low, and hydrone accumulates in cathode layer and leads to moisture percentage in sewage sludge near minus plate higher.
Current also have using the alternating electric field reduction impact to dehydrating effect for the sludge drying, solves above-mentioned technical problem with part.
After alternating electric field is exactly electro-osmosis certain time, electrode reversal connection, inverse current flows through material bed, it is possible to decrease material in the layer electricity
Resistance and the electrochemical reaction mitigating electrode, promote moisture backflow to solve the problems, such as current anode layer sludge drying simultaneously.By to bean
Rotten slag experiment finds, work than continuous using electrode reversal connection, electro-osmosis flow can improve more than 40%.Carried out with white clay
Exchange experiment, current ratio direct current final dewatering amount increases, but when frequency is higher, dewatering efficiency reduces on the contrary, using alternation electricity
Field energy consumption is higher, and the more difficult control of frequency.It can be seen that, above-mentioned electroosmotic dewatering cannot fundamentally be solved using alternating electric field
The technical problem that technology exists.
Content of the invention
In view of this, the quick mummification of anode layer mud that the present invention exists for above-mentioned prior art leads to costs and poor dehydration results, energy
The problem that consumption is high, anode layer cathode layer moisture content is unequal, there is provided a kind of anode layer mud resistance increases slow, dehydration effect
The sewage sludge dehydration device that really good, the uniform electro-osmosis of mud thickness direction porous media are coupled with mechanism filter-pressing.
The technical solution of the present invention is to provide the sewage sludge that a kind of electro-osmosis of following structure are coupled with mechanism filter-pressing and takes off
Water installations, including filter pressing container, positive plate, minus plate and DC source, described positive plate is arranged on the upper of filter pressing container
Portion, described minus plate is arranged on the bottom of filter pressing container, described DC source both positive and negative polarity respectively with positive plate and minus plate
Electrical connection, described positive plate and minus plate is equipped with apopore, is laid with filter cloth on described apopore；Described sun
Pole plate is connected with the hydraulic system in order to drive positive plate motion.
Using above structure, the present invention compared with prior art, has advantages below：By using mechanism filter-pressing and electro-osmosis
Combine；When mechanism filter-pressing dehydration is acted on electroosmotic dewatering simultaneously, as long as ensureing that pole plate and mud have necessarily using low pressure
It is in close contact, now moisture is all to be moved from positive plate toward minus plate, with the carrying out of dehydration, anode layer mud becomes dry
Lead to resistance to increase electric current simultaneously and reduce so that the driving force of electroosmotic dewatering reduces, if proceeded down, resistance will
Become very large and electric field driven power is almost stopped without result in dehydration, now it is necessary to enable part moisture to be back to
Anode layer, now stops power supply, and is switched to high-pressure machinery high pressure mode by hydraulic system so that moisture forced refluence is to sun
Pole layer, reduces mud resistance and increases electric current, and mud thickness direction porous media uniformly, improves next round electro-osmosis driving force；
The purpose being finally reached lifting dehydrating effect is so that moisture percentage in sewage sludge is more uniform.
As improvement, sewage sludge carries out pretreatment before entering filter pressing container, and described pretreatment refers to by mechanism filter-pressing
Dehydration, moisture percentage in sewage sludge is down to 75%～80%.To improve the sewage sludge treatment effeciency of the present invention.
As improvement, sewage sludge is entered filter pressing container, using DC source, described positive plate and minus plate is powered, described
Positive plate under the driving of hydraulic system, move to minus plate, while electroosmotic dewatering, keep positive plate and negative electrode
Pressure between plate, is dehydrated with the coupling realizing electro-osmosis and mechanism filter-pressing；With the carrying out of coupling dehydration, the dirt of positive plate
Mud moisture content is low, sludge drying, now disconnects DC source, stops electroosmotic dewatering, and increase positive plate and minus plate it
Between pressure, realize high-pressure machinery filter-press dehydration, to reduce moisture content further.Because sludge water content is toward minus plate and anode
Plate two-way flow, so that moisture content is uniform between two-plate, is easy to carry out coupling dehydration again.
As improvement, described hydraulic system includes hydraulic jack and high-low pressure adjusting means, the piston rod of described hydraulic jack
It is connected with positive plate, described high-low pressure adjusting means is connected with described hydraulic jack.Due to coupling the water smoking and
The pressure in high-pressure machinery filter-press dehydration stage is different, therefore adjusts hydraulic jack by high-low pressure adjusting means and puts on anode
The pressure of plate.
As improvement, described positive plate is provided with multiple anode tube, described anode tube extends downwardly and is arranged in filter pressing appearance
In device, anode tube is connected with positive plate and then is connected with the positive pole of DC source.In described anode tube one end insertion mud cake
Portion, the other end extend in shrouding through positive plate, and anode tube plays the effect extending downwardly electrode, and anode tube is hollow
Multiple apertures are offered on structure, is deep into inside mud using anode tube, due to still there is certain moisture inside mud cake,
The driving force that during energising of this anode tube, electric field produces is still relatively strong, can solve the problems, such as anode layer sludge drying, meanwhile, work as moisture
During backflow, mud cake internal moisture can be back on the shrouding of anode layer, from shrouding by there being more lacunary hollow anode pipe
Drain pipe discharge, solve the problems, such as that internal moisture is difficult discharge.
As improvement, it is provided with sucker below minus plate, described sucker is sheathed on minus plate, become by promoting sucker
Shape, produces vacuum by change in volume so that sucker produces the restoring force of suck-back, with adsorption moisture at minus plate.Root
According to the characteristic of electro-osmosis, more moisture at minus plate, are gathered, because electric field force drives minus plate moisture weaker, in order to add
The fast minus plate moisture velocity of discharge and output nearby, produce certain vacuum at minus plate, to sludge water at minus plate
Give plus certain suction, form electric field force and vacuum filter double dehydration effect.
The hemispherical dome structure made for elastomeric material as improvement, described sucker, the sealing of its outer ring is fixed on the outer of minus plate
On edge, the middle and lower part of sucker is connected with thrust mechanism, and sucker lower end is connected with drain pipe and electromagnetic switch, electromagnetic switch control
The opening and closing of drain pipe processed.Sucker deformation is promoted by thrust mechanism, sucker produces restoring force, sucker and the negative electrode plate shape of vacuum
Become a chamber that can produce vacuum, the moisture that minus plate is gathered by its restoring force suctions out, and opens electromagnetic switch, moisture from
Discharge in drain pipe.
As improvement, described sewage sludge dehydration device adopts alternately pressure swing type dehydration mode, in described high-pressure machinery filter pressing
After dehydration, between two-plate, moisture content uniformly becomes uniform, then carry out the coupling dehydration of electro-osmosis mechanism filter-pressing again, and so on
Circulation is until reach expected moisture percentage in sewage sludge requirement.Due to employ alternately pressure swing type dehydration mode so that positive plate mud quilt
Again moisturizing, is changed into wet mud from the dewatered sludge starting, and can be restored to electro-osmosis and mechanism filter-pressing coupling water smoking again,
Now high-low pressure adjusting means is switched to low pressure, is jointly dehydrated with electro-osmosis.
As improvement, closing above positive plate is provided with shrouding, and described shrouding is provided with drain pipe and electromagnetic switch,
By electromagnetic switch, drain pipe is automatically controlled.
As improvement, described electromagnetic switch, thrust mechanism are all connected with controller with hydraulic system.By controller with
Each control element connects so that whole device is realized automatically controlling, and coordinates the movement time of all parts, improves device
The gentle efficiency of Automated water.
Brief description
The structural representation of the sewage sludge dehydration device that Fig. 1 is coupled with mechanism filter-pressing for electro-osmosis of the present invention；
Fig. 2 is the FB(flow block) of work process of the present invention；
Shown in figure：1st, filter pressing container, 2, positive plate, 3, minus plate, 4, DC source, 5, apopore, 5.1,
Filter cloth, 6, hydraulic system, 6.1, hydraulic jack, 6.2, high-low pressure adjusting means, 7, anode tube, 8, sucker, 9,
Thrust mechanism, 10, drain pipe, 11, electromagnetic switch, 12, shrouding, 13, one-way throttle valve I, 14, one-way throttle valve
II, 15, solenoid directional control valve I, 16, low pressure direct-acting overflow valve, 17, high voltage straight moving overflow valve, 18, electromagnetic switch
Valve II, 19, pilot operated compound relief valve, 20, hydraulic pump, 21, insulated ring, 22, controller.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The present invention covers any replacement made in the spirit and scope of the present invention, modification, equivalent method and scheme.In order to
Make the public that the present invention is had thoroughly to understand, in present invention below preferred embodiment, concrete details is described in detail, and right
For those skilled in the art, description without these details can also understand the present invention completely.Additionally, in the accompanying drawing of the present invention
For the needs illustrated, accurately it is not drawn to scale completely, here is explained.
The basic solution of the present invention is：The sewage sludge dehydration device that electro-osmosis are coupled with mechanism filter-pressing, holds including filter pressing
Device 1, positive plate 2, minus plate 3 and DC source 4, described positive plate 2 is arranged on the top of filter pressing container 1, described
Minus plate 3 be arranged on the bottom of filter pressing container 1, described DC source 4 both positive and negative polarity respectively with positive plate 2 and minus plate
3 electrical connections, described positive plate 2 and minus plate 3 are equipped with apopore 5, are laid with filter cloth on described apopore 5
5.1；Described positive plate 3 is connected with the hydraulic system 6 in order to drive positive plate 3 motion.
As shown in figure 1, illustrating the sewage sludge dehydration device that the electro-osmosis of the present invention and mechanism filter-pressing couple.When pending
Sewage sludge moisture content higher when, then entering before the present invention processes, needing to carry out pretreatment, pretreatment concrete
Enforcement can be realized using prior art.Described pretreatment refers to be dehydrated by mechanism filter-pressing, and moisture percentage in sewage sludge is down to
75%～80%, to improve the sewage sludge treatment effeciency of the present invention.
Sewage sludge enters filter pressing container 1, using DC source 4, described positive plate 2 and minus plate 3 is powered, described
Positive plate 2 is under the driving of hydraulic system, mobile to minus plate 3, while electroosmotic dewatering, keeps positive plate 2 He
Pressure between minus plate 3, is dehydrated with the coupling realizing electro-osmosis and mechanism filter-pressing；With the carrying out of coupling dehydration, anode
The moisture percentage in sewage sludge of plate 2 is low, sludge drying, now disconnects DC source 4, stops electroosmotic dewatering, and increases positive plate
Pressure between 2 and minus plate 3, realizes high-pressure machinery filter-press dehydration, to reduce moisture content further.As can be seen here, originally
Invention can adopt with next stage work：
1. the pretreatment water smoking：Sewage sludge enters pretreatment dehydration device, and be squeezed in pretreatment dehydration device reality
Existing preliminary mechanical filter-press dehydration, moisture percentage in sewage sludge is down to 75%-80%；In this water smoking, can largely realize
Sewage sludge minimizing, in this stage, using the mechanism filter-pressing of mesolow, its pressure is generally 0.1-0.5MPa；This rank
Section enters the pretreatment water smoking before apparatus of the present invention for the higher sewage sludge of moisture content, but is less than for moisture content
The filter pressing container that 80% sewage sludge can be directly entered the present invention using pretreatment is dehydrated；
2. electro-osmosis and the mechanism filter-pressing coupling water smoking：1., after processing through step, the positive plate of electro-osmosis and minus plate are arranged
In filter pressing container, using DC source, the positive plate of electro-osmosis and minus plate are powered, described positive plate and minus plate are made
Pressing mechanism and filter pressing container for mechanism filter-pressing constitute filter pressing chamber, while realizing electroosmotic dewatering, keep to positive plate
Mechanism filter-pressing and minus plate between, so that two-plate is contacted well with mud.DC source both positive and negative polarity respectively with positive plate and
Minus plate electrically connects, and determines supply voltage according to mud handling capacity size (cake thickness), and setting voltage gradient is
10-30V/cm.The step for process after moisture percentage in sewage sludge can reach 50%-60%.Step 2. in, the pressure of its mechanism filter-pressing
For variable range, with the carrying out of filter pressing, the sludge quantity between positive plate and minus plate reduces, needs to pressurize further, should
Pressure in stage is 0.05-0.5MPa.
In dehydration, moisture that electro-osmosis and mechanism filter-pressing the are flowed out filter cloth through being laid on positive plate and minus plate is simultaneously
Flow out through apopore.(its material is not limited to traditional cloth to described filter cloth, and all materials being capable of filtering all are believed that
It is filter cloth), the filter cloth of parcel minus plate is made up of stainless steel material, is conducive to improving electroosmotic dewatering effect.
3. the high-pressure machinery filter-press dehydration stage：2., after processing through step, the moisture percentage in sewage sludge of positive plate is low, sludge drying, this
When disconnect DC source, stop electroosmotic dewatering, and increase the pressure between positive plate and minus plate, realize high-pressure machinery pressure
Filter dehydration, sludge water content toward minus plate and positive plate two-way flow so that between two-plate moisture content uniform.This water smoking is
High press-dehydrating, the pressure being supplied to mud is 3-5MPa.
Described hydraulic system includes hydraulic jack 6.1 and high-low pressure adjusting means 6.2, the piston end of described hydraulic jack 6.1
It is connected with positive plate 2, described high-low pressure adjusting means 6.2 is connected with described hydraulic jack 6.1.Due in coupling
Water smoking is different with the pressure in high-pressure machinery filter-press dehydration stage, therefore adjusts hydraulic jack by high-low pressure adjusting means
6.1 pressure putting on positive plate 2.
Multiple anode tube 7 are provided with described positive plate 2, described anode tube 7 extends downwardly and is arranged in filter pressing container 1
Interior, it is evenly distributed in whole filter pressing cylinder 1, anode tube 7 is connected with positive plate 2 and then the positive pole with DC source 4
It is connected." being uniformly distributed " simply has an impact to technique effect, and that is, preferably, and non-uniform Distribution also can solve this
The technical problem of invention.Inside described anode tube 7 one end insertion mud cake, the other end extend in shrouding through positive plate 2,
Anode tube plays the effect extending downwardly electrode, and anode tube is to offer multiple apertures on hollow structure, deep using anode tube
Enter to inside mud, due to still having certain moisture inside mud cake, the driving force that during energising of this anode tube, electric field produces is still
So relatively strong, anode layer sludge drying can be solved the problems, such as, meanwhile, when moisture flows back, mud cake internal moisture can be more by having
The hollow anode pipe of aperture is back on the shrouding of anode layer, and the drain pipe from shrouding is discharged, and solves internal moisture and is difficult to arrange
Go wrong.
It is provided with sucker 8 below minus plate 3, described sucker 8 is sheathed on minus plate 3, become by promoting sucker 8
Shape is so that sucker 8 produces the restoring force of suck-back, with adsorption moisture at minus plate 3.According to the characteristic of electro-osmosis, negative electrode
Gather more moisture at plate 3, in order to accelerate the minus plate moisture velocity of discharge and output nearby, produced at minus plate
Certain vacuum, applies certain suction to sludge water content at minus plate, forms electric field force and vacuum filter double dehydration effect.
The hemispherical dome structure that described sucker 8 is made for elastomeric material, the sealing of its outer ring is fixed on the outer edge of minus plate 3,
The middle and lower part of sucker 8 is connected with thrust mechanism 9, and sucker 8 lower end is connected with drain pipe 10 and electromagnetic switch 11, and electromagnetism is opened
Close the opening and closing of 11 control drain pipies 10.Sucker deformation is promoted by thrust mechanism, sucker produces the restoring force of vacuum, sucker
Form a chamber that can produce vacuum with minus plate, the moisture that minus plate gathers is suctioned out by its restoring force, and open electromagnetism and open
Close, moisture is discharged from drain pipe.Described thrust mechanism 9 can adopt cylinder, but other mechanisms in addition to cylinder
Also enable, for example, hydraulic cylinder may also be employed as thrust mechanism.
Described sewage sludge dehydration device is using alternately pressure swing type dehydration mode, after described high-pressure machinery filter-press dehydration, two
Between pole plate, moisture content uniformly becomes uniform, then carry out coupling dehydration again, and so on circulation is aqueous up to reaching expected mud
Rate requires.Due to employ alternately pressure swing type dehydration mode so that positive plate mud is by moisturizing again, by dewatered sludge
It is changed into wet mud, electro-osmosis and mechanism filter-pressing coupling water smoking, now high-low pressure adjusting means switching can be restored to again
To low pressure, jointly it is dehydrated with electro-osmosis.The moisture content of indication of the present invention is not uniformly absolute uniform, but a kind of relatively uniform
Statement.
Above positive plate 2, closing is provided with shrouding 12, and described shrouding 12 is provided with drain pipe 10 and electromagnetic switch 11,
By electromagnetic switch 11, drain pipe 10 is automatically controlled；The electromagnetic switch of drain pipe 10 is opened and closed as needed.
Described electromagnetic switch 11, thrust mechanism 9 are all connected with controller 22 with hydraulic system.By controller and respectively
Control element connects so that whole device is realized automatically controlling, and coordinates the movement time of all parts, improves device oneself
Dynamicization level and efficiency.
Insulate between described shrouding 12 and positive plate 2, positive plate 2 and minus plate 3 are also respectively provided with insulated ring 21, absolutely
Positive plate 2, minus plate 3 and filter pressing container 1 mutual insulating, positive plate 2 are made up by edge circle of electrocorrosion-resisting material.
Described filter pressing container 1 can adopt cylinder-shaped, and certainly, the shape of filter pressing container 1 has no effect on the enforcement of the present invention,
But the position that filter pressing container 1 lower section setting is installed for sucker.
High-low pressure adjusting means be a part for hydraulic system although there being a lot of modes can realize its function, but this enforcement
Example still lists a detailed preferred embodiment, and that is, described high-low pressure adjusting means includes one-way throttle valve I 13, list
Overflow to choke valve II 14, solenoid directional control valve I 15, solenoid directional control valve II 18, low pressure direct-acting overflow valve 16, high voltage straight moving
Stream valve 17, pilot operated compound relief valve 19 and hydraulic pump 20, described one-way throttle valve I 13, one-way throttle valve II 14 respectively with
The oil inlet and outlet of hydraulic jack 12 and solenoid directional control valve I 15 connection, described pilot operated compound relief valve 19 and solenoid directional control valve I
15 and solenoid directional control valve II 18 connect, described solenoid directional control valve II 18 and low pressure direct-acting overflow valve 16, high voltage straight moving
Overflow valve 17 connects, and described low pressure direct-acting overflow valve 16, high voltage straight moving overflow valve 17 pass through solenoid directional control valve II 18
For adjusting hydraulic pump 20 outlet pressure, and then conditioning of mud squeeze pressure mud pressure in low pressure is
0.05-0.5MPa, in high-pressure compressing, the pressure suffered by mud is 3-5MPa.In addition also can configure for high-low pressure adjusting means
The parts such as motor, fuel tank, oil absorption filter, cooler, air filter, liquidometer, pressure gauge.
Below only preferred embodiments of the present invention are described, but are not to be construed as limiting the scope of the invention.The present invention
It is not only limited to above example, its concrete structure allows to change.In a word, all protections in independent claims of the present invention
In the range of the various change made all within the scope of the present invention.
Claims (10)
1. the sewage sludge dehydration device that a kind of electro-osmosis are coupled with mechanism filter-pressing, including filter pressing container (1), positive plate (2),
Minus plate (3) and DC source (4) it is characterised in that：Described positive plate (2) is arranged on filter pressing container (1)
Top, described minus plate (3) is arranged on the bottom of filter pressing container (1), and described DC source (4) both positive and negative polarity divides
Do not electrically connect with positive plate (2) and minus plate (3), described positive plate (2) and minus plate (3) are equipped with water outlet
Hole (5), is laid with filter cloth (5.1) on described apopore (5)；Described positive plate (3) with order to drive positive plate
(3) hydraulic system (6) moved connects.
2. electro-osmosis according to claim 1 are coupled with mechanism filter-pressing sewage sludge dehydration device it is characterised in that：
Sewage sludge carries out pretreatment before entering filter pressing container (1), and described pretreatment refers to be dehydrated by mechanism filter-pressing, will
Moisture percentage in sewage sludge is down to 75%～80%.
3. the sewage sludge dehydration device that electro-osmosis according to claim 1 and 2 are coupled with mechanism filter-pressing, its feature
It is：Sewage sludge enters filter pressing container (1), using DC source (4) to described positive plate (2) and minus plate (3)
Power supply, described positive plate (2) is under the driving of hydraulic system, mobile to minus plate (3), same in electroosmotic dewatering
When, keep the pressure between positive plate (2) and minus plate (3), be dehydrated with the coupling realizing electro-osmosis and mechanism filter-pressing；
With the carrying out of coupling dehydration, the moisture percentage in sewage sludge of positive plate (2) is low, sludge drying, now disconnects DC source (4),
Stop electroosmotic dewatering, and increase the pressure between positive plate (2) and minus plate (3), realize high-pressure machinery filter-press dehydration,
To reduce moisture content further.
4. electro-osmosis according to claim 1 are coupled with mechanism filter-pressing sewage sludge dehydration device it is characterised in that：
Described hydraulic system includes hydraulic jack (6.1) and high-low pressure adjusting means (6.2), the work of described hydraulic jack (6.1)
Stopper rod is connected with positive plate (2), and described high-low pressure adjusting means (6.2) is connected with described hydraulic jack (6.1).
5. electro-osmosis according to claim 2 are coupled with mechanism filter-pressing sewage sludge dehydration device it is characterised in that：
Multiple anode tube (7) are provided with described positive plate (2), described anode tube (7) extends downwardly and is arranged in filter pressing appearance
In device (1), be evenly distributed in whole filter pressing cylinder (1), anode tube (7) be connected with positive plate (2) so that with
The positive pole of DC source (4) is connected.
6. the sewage sludge dehydration device that electro-osmosis are coupled with mechanism filter-pressing according to claim 1 or 5, its feature
It is：It is provided with sucker (8) below minus plate (3), described sucker (8) is sheathed on minus plate (3), lead to
Cross promotion sucker (8) deformation, vacuum is produced by change in volume so that sucker (8) produces the restoring force of suck-back, with
Adsorption moisture from minus plate (3).
7. electro-osmosis according to claim 6 are coupled with mechanism filter-pressing sewage sludge dehydration device it is characterised in that：
The hemispherical dome structure that described sucker (8) is made for elastomeric material, the sealing of its outer ring is fixed on the outer edge of minus plate (3)
On, the middle and lower part of sucker (8) is connected with thrust mechanism (9), and sucker (8) lower end is connected with drain pipe (10) and electromagnetism
Switch (11), electromagnetic switch (11) controls the opening and closing of drain pipe (10).
8. electro-osmosis according to claim 3 are coupled with mechanism filter-pressing sewage sludge dehydration device it is characterised in that：
Described sewage sludge dehydration device is using alternately pressure swing type dehydration mode, after described high-pressure machinery filter-press dehydration, two-plate
Between moisture content become uniform, then carry out the coupling dehydration of electro-osmosis mechanism filter-pressing again, and so on circulation is until reach expected dirt
Mud water content requirement.
9. electro-osmosis according to claim 1 are coupled with mechanism filter-pressing sewage sludge dehydration device it is characterised in that：
The closing in the top of positive plate (2) is provided with shrouding (12), and described shrouding (12) is provided with drain pipe (10) and electricity
Magnetic switch (11), is automatically controlled to drain pipe (10) by electromagnetic switch (11).
10. electro-osmosis according to claim 7 are coupled with mechanism filter-pressing sewage sludge dehydration device it is characterised in that：
Described electromagnetic switch (11), thrust mechanism (9) are all connected with controller with hydraulic system.
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| CN106865943A (en) * | 2017-02-23 | 2017-06-20 | 扬州博越生态技术有限公司 | A kind of sludge high-drying integrating device |
| CN107381997A (en) * | 2017-09-19 | 2017-11-24 | 饶宾期 | Electro-osmosis press filtration synergistic mud dewatering method |
| CN107555754A (en) * | 2017-09-19 | 2018-01-09 | 饶宾期 | Energy-saving electrical permeates sludge high-drying degree dewatering |
| CN107551656A (en) * | 2017-10-10 | 2018-01-09 | 山东百川同创能源有限公司 | A kind of DC electric field combination vertical pressurization height contains interior water dehydration device and method |
| CN108314281A (en) * | 2018-01-22 | 2018-07-24 | 浙江工业大学 | A kind of high-voltage pulse electrode system of electrolysis processing deeply dehydrating sludge |
| CN108658415A (en) * | 2018-04-08 | 2018-10-16 | 江苏大学 | A kind of negative pressure electro-osmosis coupling sludge deep heat drying device |
| CN109485235A (en) * | 2018-12-29 | 2019-03-19 | 启迪桑德环境资源股份有限公司 | A kind of saturating Bidirectional water outlet of sludge electroosmotic and double it is electrically coupled high level cadre's dewatering system and method |
| CN113860702A (en) * | 2021-05-12 | 2021-12-31 | 中国计量大学 | Multi-field coupling automatic dewatering method for sewage sludge |
| CN115043573A (en) * | 2022-05-27 | 2022-09-13 | 浙江工商大学 | Vehicle-mounted mobile voltage filter deep dehydration processing system |
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| CN108658415A (en) * | 2018-04-08 | 2018-10-16 | 江苏大学 | A kind of negative pressure electro-osmosis coupling sludge deep heat drying device |
| CN109485235A (en) * | 2018-12-29 | 2019-03-19 | 启迪桑德环境资源股份有限公司 | A kind of saturating Bidirectional water outlet of sludge electroosmotic and double it is electrically coupled high level cadre's dewatering system and method |
| CN113860702A (en) * | 2021-05-12 | 2021-12-31 | 中国计量大学 | Multi-field coupling automatic dewatering method for sewage sludge |
| CN113860702B (en) * | 2021-05-12 | 2023-09-19 | 中国计量大学 | Multi-field coupling automatic sewage sludge dehydration method |
| CN115043573A (en) * | 2022-05-27 | 2022-09-13 | 浙江工商大学 | Vehicle-mounted mobile voltage filter deep dehydration processing system |
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