CN106396303B - The sewage sludge dehydration device that electro-osmosis is coupled with mechanism filter-pressing - Google Patents
The sewage sludge dehydration device that electro-osmosis is coupled with mechanism filter-pressing Download PDFInfo
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- CN106396303B CN106396303B CN201610458535.2A CN201610458535A CN106396303B CN 106396303 B CN106396303 B CN 106396303B CN 201610458535 A CN201610458535 A CN 201610458535A CN 106396303 B CN106396303 B CN 106396303B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- 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
The invention discloses the sewage sludge dehydration devices that a kind of electro-osmosis is coupled with mechanism filter-pressing, including filters pressing container (1), anode plate (2), cathode plate (3) and DC power supply (4), top of anode plate (2) setting in filters pressing container (1), lower part of cathode plate (3) setting in filters pressing container (1), described DC power supply (4) positive and negative anodes are electrically connected with anode plate (2) and cathode plate (3) respectively, apopore (5) are equipped on the anode plate (2) and cathode plate (3), filter cloth (5.1) are laid on the apopore (5)；The anode plate (3) is connect with the hydraulic system (6) to drive anode plate (3) to move.Using the present invention, the increase of anode layer sludge resistance is slowly, dehydrating effect is good, sludge thickness direction porous media is uniform.
Description
Technical field
The present invention relates to sewage sludge process field, Sewage that specifically a kind of electro-osmosis is coupled with mechanism filter-pressing
Mud dehydration device.
Background technique
Sludge high-moisture percentage is to restrict the bottleneck of specific resistance to filtration, and the high sludge of moisture content is not only bulky, and
And contained a large amount of organic matters, heavy metal and harmful microorganism, it is easy corruption or can be discharged into environment, cause secondary pollution, it is right
It is all adversely affected in the subsequent landfill of sludge, burning, resource utilization etc..Therefore, deeply dehydrating sludge minimizing is
Treatment of Sludge primary and foremost purpose, minimizing are the bases for realizing sludge other " three change ", and sludge is more dry, and subsequent processing disposition more has
Benefit.
Electroosmotic dewatering technology is utilized a kind of special double electrical layers existing for sludge and realizes dehydration.Sludge sludge
Grain is negatively charged, and hydrone is positively charged, and under electric field force effect, electronegative mud granule is moved toward anode plate, and positively charged
Hydrone is moved toward cathode plate.As a kind of novel, green, efficient solid-liquid separation technique, electroosmotic dewatering technology is due to tool
Have the advantages that good dewatering, flexibility are high, pollution-free, controllability is strong, receives significant attention in recent years, more and more
Researcher is applied in sludge dewatering, to achieve the purpose that carry out deep dehydration to sludge.
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, specific manifestation are as follows: good dehydrating effect, during electroosmotic dewatering, in electrochemistry
Under reagentia, for sludge cell by electro photoluminescence, electrolysis water directional strength, which moves, generates Brownian movement, intracellular temperature raising,
Pressure increases, so that membranolysis, water outflow in part film, electroosmotic dewatering, which can remove tradition machinery dehydration, to be taken off
The partial moisture removed, by electroosmotic dewatering, the moisture content of sludge can be reduced to 60% or less；Have compared with heat drying certain
Power savings advantages, reduce sludge deep processing desiccation expense；Only to sludge reduction be dehydrated, do not change sludge property,
Ingredient does not increase new substance, on subsequent any sludge treating method without influence；Treatment process cleaning, it is without secondary pollution.
However, the sludge dewatering technology that electroosmotic dewatering technology is emerging as one, is mainly asked there is also following at present
Topic: (1) the final moisture content of dehydrated sludge still has 50%-60%, is difficult breakthrough 50%, it is difficult to reach the saturating high level cadre of sludge electroosmotic
Spend the technical effect of dehydration；(2) during electro-osmosis, the moisture content of sludge is quickly reduced near anode, and electrochemical reaction
Occurs crack in the generation of gas and sludge cake, the contact area between sludge cake and electrode plate reduces, and causes sludge electric
Resistance increases, and electric current decline, dehydrating effect is deteriorated；(3) in dehydration, electric field generation electric current has electric energy and is converted into thermal energy, makes
Sludge temperature increases, and there are in fact energy consumption problem bigger than normal；(4) porous media of mud cake in a thickness direction is uneven, sun
Pole layer moisture percentage in sewage sludge is lower, and hydrone accumulates in cathode layer and causes moisture percentage in sewage sludge near cathode plate higher.
Currently also having reduces influence of the sludge drying to dehydrating effect using alternating electric field, is asked with partially solving above-mentioned technology
Topic.Alternating electric field be exactly electro-osmosis after a certain period of time, electrode reversal connection, inverse current flow through it is material bed, can reduce it is material bed in
Resistance and the electrochemical reaction for mitigating electrode, while moisture reflux being promoted to solve the problems, such as current anode layer sludge drying.By right
Soybean residue experiment discovery, is reversely connected using electrode than continuous work, electro-osmosis flow can be improved 40% or more.It is carried out with white clay
Exchange experiment, current ratio direct current final dewatering amount increase, but when frequency is higher, dehydration efficiency reduces instead, using alternating electric field
Energy consumption is higher, and frequency is more difficult to control.As it can be seen that can not fundamentally solve above-mentioned electroosmotic dewatering technology using alternating electric field
?.
Summary of the invention
In view of this, the present invention leads to dehydrating effect for the above-mentioned quick desiccation of anode layer sludge of the existing technology
It is slow, de- to provide a kind of anode layer sludge resistance increase for the problem that difference, energy consumption are high, anode layer cathode layer moisture content is unequal
The sewage sludge dehydration device that water effect is good, the uniform electro-osmosis of sludge thickness direction porous media is coupled with mechanism filter-pressing.
The technical solution of the invention is as follows, provides a kind of Sewage that the electro-osmosis with flowering structure is coupled with mechanism filter-pressing
Filters pressing container is arranged in mud dehydration device, including filters pressing container, anode plate, cathode plate and DC power supply, the anode plate
Top, the cathode plate are arranged in the lower part of filters pressing container, the DC power supply positive and negative anodes respectively with anode plate and cathode
Plate is electrically connected, and is equipped with apopore in the anode plate and cathode plate, is laid with filter cloth on the apopore；The sun
Pole plate is connect with the hydraulic system to drive anode plate to move.
Using the above structure, compared with prior art, the present invention having the advantage that by using mechanism filter-pressing and electric osmose
It combines thoroughly；When mechanism filter-pressing dehydration acts on simultaneously with electroosmotic dewatering, as long as guaranteeing that pole plate and sludge have one using low pressure
Fixed to be in close contact, moisture is moved from anode plate toward cathode plate at this time, and with the progress of dehydration, anode layer sludge dries out
Cause resistance to increase electric current simultaneously to reduce, so that the driving force of electroosmotic dewatering reduces, if continued down, resistance will become
It obtains very big and makes electric field driven power almost without causing dehydration to stop, now it is necessary to which partial moisture is enabled to flow back into sun
Pole layer, stops power supply at this time, is switched to high-pressure machinery high pressure mode by hydraulic system, so that moisture forced refluence is to anode
Layer reduces sludge resistance and increases electric current, and sludge thickness direction porous media is uniform, improves next round electro-osmosis driving force；Most
Achieve the purpose that promote dehydrating effect eventually, so that moisture percentage in sewage sludge is more uniform.
As an improvement, sewage sludge is pre-processed before entering filters pressing container, the pretreatment, which refers to, passes through machinery
Moisture percentage in sewage sludge is down to 75%~80% by filter-press dehydration.To improve sewage sludge treatment effeciency of the invention.
As an improvement, sewage sludge enters filters pressing container, powered using DC power supply to the anode plate and cathode plate, institute
The anode plate stated is mobile to cathode plate under the driving of hydraulic system, while electroosmotic dewatering, keeps anode plate and cathode
Pressure between plate, to realize the coupling dehydration of electro-osmosis and mechanism filter-pressing；With the progress of coupling dehydration, the sludge of anode plate
Moisture content is low, sludge drying, disconnects DC power supply at this time, stops electroosmotic dewatering, and increase between anode plate and cathode plate
Pressure realizes high-pressure machinery filter-press dehydration, to further decrease moisture content.Since sludge water content is two-way toward cathode plate and anode plate
Flowing, so that moisture content is uniform between two-plate, convenient for carrying out coupling dehydration again.
As an improvement, the hydraulic system includes hydraulic cylinder and high-low pressure regulating device, the work of the hydraulic cylinder
Stopper rod is connect with anode plate, and the high-low pressure regulating device is connected with the hydraulic cylinder.Due to being dehydrated rank in coupling
Section is different with the pressure in high-pressure machinery filter-press dehydration stage, therefore is applied to by high-low pressure regulating device to adjust hydraulic cylinder
The pressure of anode plate.
As an improvement, being provided with multiple anode tubes on the anode plate, the anode tube, which extends downwardly, is arranged in pressure
It filters in container, anode tube is connected with anode plate and then is connected with the anode of DC power supply.Mud is inserted into described anode tube one end
Inside cake, the other end passes through anode plate and extend into sealing plate, and anode tube plays the role of extending downwardly at electrode, during anode tube is
Multiple apertures are offered on hollow structure, are deep into inside sludge using anode tube, due to still having certain water inside mud cake
Point, the driving force that electric field generates when which is powered is still relatively strong, it can solve anode layer sludge drying problem, meanwhile, work as water
When dividing reflux, mud cake internal moisture can be by there is more lacunary hollow anode pipe to flow back on the sealing plate of anode layer, from sealing plate
On drainpipe discharge, solve the problems, such as that internal moisture is not easy to be discharged.
As an improvement, being provided with sucker below cathode plate, the sucker is sheathed on cathode plate, by pushing sucker
Deformation generates vacuum degree by volume change, so that sucker generates the restoring force of suck-back, with from cathode plate place adsorption moisture.Root
According to the characteristic of electro-osmosis, more moisture are gathered at cathode plate, since electric field power drive cathode plate moisture is weaker, in order to accelerate
The moisture velocity of discharge and discharge rate, generate certain vacuum degree, to sludge water content at cathode plate at cathode plate near cathode plate
Apply certain suction, forms electric field force and vacuum filter double dehydration effect.
As an improvement, the sucker is hemispherical dome structure made of elastic material, outer ring sealing is fixed on cathode plate
Outer edge on, the middle and lower part of sucker is connected with thrust mechanism, and sucker lower end is connected with drainpipe and electromagnetic switch, electromagnetic switch
Control the opening and closing of drainpipe.Sucker deformation is pushed by thrust mechanism, sucker generates the restoring force of vacuum, sucker and cathode plate shape
It can produce the chamber of vacuum at one, the moisture that restoring force gathers cathode plate is sucked out, and opens electromagnetic switch, and moisture is from row
It is discharged in water pipe.
As an improvement, the sewage sludge dehydration device uses alternately pressure swing type dehydration mode, in the high-pressure machinery
After filter-press dehydration, moisture content uniformly becomes uniformly between two-plate, then carries out the coupling dehydration of electro-osmosis mechanism filter-pressing again, so past
Multiple circulation is until reach expected moisture percentage in sewage sludge requirement.Due to using alternately pressure swing type dehydration mode, so that anode plate sludge
By moisturizing again, wet mud is become from the dewatered sludge started, and electro-osmosis and mechanism filter-pressing coupling dehydration rank can be restored to
Section, high-low pressure regulating device is switched to low pressure at this time, is dehydrated jointly with electro-osmosis.
As an improvement, closing is provided with sealing plate in the top of anode plate, it is provided with drainpipe on the sealing plate and electromagnetism is opened
It closes, drainpipe is carried out automatically controlling by electromagnetic switch.
As an improvement, the electromagnetic switch, thrust mechanism and hydraulic system are connected with controller.Pass through controller
It is connect with each control element, is automatically controlled so that whole device is realized, and coordinate the actuation time of all parts, improve device
The gentle efficiency of Automated water.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the sewage sludge dehydration device that electro-osmosis of the present invention is coupled with mechanism filter-pressing；
Fig. 2 is the flow diagram of the course of work of the present invention；
It is as shown in the figure: 1, filters pressing container, 2, anode plate, 3, cathode plate, 4, DC power supply, 5, apopore, 5.1, filter cloth, 6,
Hydraulic system, 6.1, hydraulic cylinder, 6.2, high-low pressure regulating device, 7, anode tube, 8, sucker, 9, thrust mechanism, 10, draining
Pipe, 11, electromagnetic switch, 12, sealing plate, 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, solenoid directional control valve II, 19, pilot operated compound relief valve, 20, hydraulic pump,
21, insulated ring, 22, controller.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
The present invention covers any substitution made on the essence and scope of the present invention, modification, equivalent method and scheme.For
So that the public is had thorough understanding to the present invention, is described in detail concrete details in the following preferred embodiment of the present invention, and
The present invention can also be understood completely in description without these details for a person skilled in the art.In addition, the attached drawing of the present invention
In be explained herein not being drawn to scale accurately completely for the needs of signal.
Basic solution of the invention is: the sewage sludge dehydration device that electro-osmosis is coupled with mechanism filter-pressing, including pressure
Container 1, anode plate 2, cathode plate 3 and DC power supply 4 are filtered, the top of filters pressing container 1 is arranged in the anode plate 2, described
The lower part of filters pressing container 1 is arranged in cathode plate 3, and 4 positive and negative anodes of DC power supply are electrically connected with anode plate 2 and cathode plate 3 respectively
It connects, is equipped with apopore 5 on the anode plate 2 and cathode plate 3, is laid with filter cloth 5.1 on the apopore 5；Described
Anode plate 2 is connect with the hydraulic system 6 to drive anode plate 2 to move.
As shown in Figure 1, illustrating the sewage sludge dehydration device that electro-osmosis of the invention is coupled with mechanism filter-pressing.When wait locate
When the moisture content of the sewage sludge of reason is higher, then before entering present invention processing, pre-processed, it is pretreated specific
Implement to realize using the prior art.The pretreatment refers to be dehydrated by mechanism filter-pressing, and moisture percentage in sewage sludge is down to
75%~80%, to improve sewage sludge treatment effeciency of the invention.
Sewage sludge enters filters pressing container 1, is powered using DC power supply 4 to the anode plate 2 and cathode plate 3, described
Anode plate 2 is mobile to cathode plate 3 under the driving of hydraulic system, while electroosmotic dewatering, keeps anode plate 2 and cathode
Pressure between plate 3, to realize the coupling dehydration of electro-osmosis and mechanism filter-pressing；With the progress of coupling dehydration, the dirt of anode plate 2
Mud moisture content is low, sludge drying, disconnects DC power supply 4 at this time, stops electroosmotic dewatering, and increase anode plate 2 and cathode plate 3
Between pressure, realize high-pressure machinery filter-press dehydration, to further decrease moisture content.It can be seen that the present invention can be used it is following
Stage work:
1. pre-processing the water smoking: sewage sludge enters pretreatment dehydration device, by crowded in pretreatment dehydration device
Pressure realizes preliminary mechanical filter-press dehydration, and moisture percentage in sewage sludge is down to 75%-80%；It, can be largely in the water smoking
Realize sewage sludge minimizing, in this stage, using the mechanism filter-pressing of mesolow, pressure is generally 0.1-0.5MPa；It should
Stage is that the higher sewage sludge of moisture content enters the pretreatment water smoking before apparatus of the present invention, but moisture content is lower than
80% sewage sludge can be directly entered filters pressing container of the invention without pretreatment and is dehydrated；
2. electro-osmosis and mechanism filter-pressing couple the water smoking: after 1. step is handled, the anode plate and cathode plate of electro-osmosis
It is set in filters pressing container, is powered using anode plate and cathode plate of the DC power supply to electro-osmosis, the anode plate and cathode
Plate constitutes filters pressing chamber as the pressing mechanism and filters pressing container of mechanism filter-pressing, while realizing electroosmotic dewatering, keeps to sun
Mechanism filter-pressing between pole plate and cathode plate, so that two-plate contacts well with sludge.DC power supply positive and negative anodes respectively with anode
Plate and cathode plate electrical connection, supply voltage is determined according to mud handling capacity size (cake thickness), and setting voltage gradient is
10-30V/cm.The step for processing after moisture percentage in sewage sludge can reach 50%-60%.Step 2. in, the pressure of mechanism filter-pressing
For variable range, with the progress of filters pressing, the sludge quantity between anode plate and cathode plate is reduced, and needs further to pressurize, the rank
Pressure in section is 0.05-0.5MPa.
During the dehydration process, filter of the moisture through being laid in anode plate and cathode plate that electro-osmosis and mechanism filter-pressing are flowed out
Cloth is simultaneously flowed out through apopore.(its material is not limited to traditional cloth to the filter cloth, and all materials that can be realized filtering can be recognized
To be filter cloth), the filter cloth for wrapping up cathode plate is made of stainless steel material, is conducive to improve electroosmotic dewatering effect.
3. the high-pressure machinery filter-press dehydration stage: after 2. step is handled, the moisture percentage in sewage sludge of anode plate is low, sludge drying,
DC power supply is disconnected at this time, stops electroosmotic dewatering, and increase the pressure between anode plate and cathode plate, realizes high-pressure machinery pressure
Filter dehydration, sludge water content is toward cathode plate and anode plate two-way flow, so that moisture content is uniform between two-plate.The water smoking is height
Press-dehydrating, the pressure for being supplied to sludge is 3-5MPa.
The hydraulic system includes hydraulic cylinder 6.1 and high-low pressure regulating device 6.2, the work of the hydraulic cylinder 6.1
Plug end is connect with anode plate 2, and the high-low pressure regulating device 6.2 is connected with the hydraulic cylinder 6.1.Due to coupling
Water smoking is different with the pressure in high-pressure machinery filter-press dehydration stage, therefore adjusts hydraulic cylinder by high-low pressure regulating device
6.1 are applied to the pressure of anode plate 2.
Multiple anode tubes 7 are provided on the anode plate 2, the anode tube 7, which extends downwardly, is arranged in filters pressing container 1
It is interior, it is evenly distributed in entire filters pressing cylinder 1, anode tube 7 is connected with anode plate 2 and then is connected with the anode of DC power supply 4.
" being uniformly distributed " only has an impact to technical effect, i.e., preferably, and non-uniform Distribution also can solve skill of the invention
Art problem.Inside 7 one end of anode tube insertion mud cake, the other end passes through anode plate 2 and extend into sealing plate, and anode tube plays
The effect that electrode is extended downwardly, anode tube are to offer multiple apertures on hollow structure, are deep into sludge using anode tube
Portion, due to still having certain moisture inside mud cake, the driving force that electric field generates when which is powered is still relatively strong, can solve
Certainly anode layer sludge drying problem, meanwhile, when moisture reflux, mud cake internal moisture can be by there is more lacunary hollow anode
Pipe flows back on the sealing plate of anode layer, from the drainpipe discharge on sealing plate, solves the problems, such as that internal moisture is not easy to be discharged.
Sucker 8 is provided with below cathode plate 3, the sucker 8 is sheathed on cathode plate 3, by pushing sucker 8 to become
Shape, so that sucker 8 generates the restoring force of suck-back, with from adsorption moisture from cathode plate 3.According to the characteristic of electro-osmosis, at cathode plate 3
More moisture are gathered, in order to accelerate the moisture velocity of discharge and discharge rate near cathode plate, have been generated centainly at cathode plate
Vacuum degree applies certain suction to sludge water content at cathode plate, forms electric field force and vacuum filter double dehydration effect.
The sucker 8 is hemispherical dome structure made of elastic material, and outer ring seals the outer edge for being fixed on cathode plate 3
On, the middle and lower part of sucker 8 is connected with thrust mechanism 9, and 8 lower end of sucker is connected with drainpipe 10 and electromagnetic switch 11, electromagnetic switch
The opening and closing of 11 control drainpipes 10.Sucker deformation is pushed by thrust mechanism, sucker generates the restoring force of vacuum, sucker and cathode
Plate forms the chamber that can produce vacuum, and the moisture that restoring force gathers cathode plate is sucked out, and opens electromagnetic switch, moisture
It is discharged from drainpipe.The thrust mechanism 9 can use cylinder, but other mechanisms other than cylinder are also able to achieve,
For example, hydraulic cylinder can also be used as thrust mechanism.
The sewage sludge dehydration device is using alternately pressure swing type dehydration mode, in the high-pressure machinery filter-press dehydration
Afterwards, moisture content uniformly becomes uniformly, then to carry out coupling dehydration again between two-plate, so on circulate until reaching expected sludge
Water content requirement.Due to using alternately pressure swing type dehydration mode, so that dry dirt of the anode plate sludge by moisturizing again, by
Mud becomes wet mud, and can be restored to electro-osmosis and mechanism filter-pressing coupling water smoking, and high-low pressure regulating device is cut at this time
Low pressure is changed to, is dehydrated jointly with electro-osmosis.Uniformly instead of absolute uniform, one kind be not relatively uniform for signified moisture content of the invention
Statement.
In the top of anode plate 2, closing is provided with sealing plate 12, is provided with drainpipe 10 and electromagnetic switch on the sealing plate 12
11, drainpipe 10 is carried out automatically controlling by electromagnetic switch 11；The electromagnetic switch of drainpipe 10 is opened and closed as needed.
Electromagnetic switch 11, thrust mechanism 9 and the hydraulic system is connected with controller 22.By controller and respectively
Control element connection, automatically controls, and coordinate the actuation time of all parts so that whole device is realized, improves the automatic of device
Change horizontal and efficiency.
It insulate between the sealing plate 12 and anode plate 2, anode plate 2 and cathode plate 3 are also respectively provided with insulated ring 21, insulation
Anode plate 2, cathode plate 3 and 1 mutual insulating of filters pressing container, anode plate 2 are made circle of electrocorrosion-resisting material.
The filters pressing container 1 can be using cylinder-shaped, and certainly, the shape of filters pressing container 1 has no effect on reality of the invention
It applies, but the position installed for sucker is set below filters pressing container 1.
High-low pressure regulating device is a part of hydraulic system, although there is many modes that its function, this reality may be implemented
It applies example and still lists a detailed preferred embodiment, is i.e. the high-low pressure regulating device includes one-way throttle valve I 13, list
To throttle 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 overflow valve
17, pilot operated compound relief valve 19 and hydraulic pump 20, the one-way throttle valve I 13, one-way throttle valve II 14 respectively with hydraulic cylinder
12 oil inlet and outlet and solenoid directional control valve I 15 connection, the pilot operated compound relief valve 19 are changed with solenoid directional control valve I 15 and electromagnetism
It being connected to valve II 18, the solenoid directional control valve II 18 is connect with low pressure direct-acting overflow valve 16, high voltage straight moving overflow valve 17,
The low pressure direct-acting overflow valve 16, high voltage straight moving overflow valve 17 are by solenoid directional control valve II 18 for adjusting hydraulic pump
20 outlet pressures, and then conditioning of mud squeeze pressure sludge pressure in low pressure is 0.05-0.5MPa, in high-pressure compressing
When sludge suffered by pressure be 3-5MPa.In addition can also for high-low pressure regulating device configure motor, fuel tank, oil absorption filter,
The components such as cooler, air filter, liquidometer, pressure gauge.
Only the preferred embodiment of the present invention has been described above, but is not to be construed as limiting the scope of the invention.This
Invention is not only limited to above embodiments, and specific structure is allowed to vary.In short, all guarantors in independent claims of the present invention
Made various change is within the scope of the invention in shield range.
Claims (8)
1. the sewage sludge dehydration device that a kind of electro-osmosis is coupled with mechanism filter-pressing, including filters pressing container (1), anode plate (2), yin
Pole plate (3) and DC power supply (4), it is characterised in that: described anode plate (2) setting is described on the top of filters pressing container (1)
Cathode plate (3) setting in the lower part of filters pressing container (1), the DC power supply (4) positive and negative anodes respectively with anode plate (2) and cathode
Plate (3) is electrically connected, and is equipped with apopore (5) on the anode plate (2) and cathode plate (3), is laid on the apopore (5)
There are filter cloth (5.1)；The anode plate (2) is connect with the hydraulic system (6) to drive anode plate (2) to move；
It is provided with multiple anode tubes (7) on the anode plate (2), the anode tube (7), which extends downwardly, is arranged in filters pressing appearance
It in device (1), is evenly distributed in entire filters pressing container (1), anode tube (7) is connected with anode plate (2) and then and DC power supply
(4) anode is connected.
2. the sewage sludge dehydration device that electro-osmosis according to claim 1 is coupled with mechanism filter-pressing, it is characterised in that: dirty
Sewage sludge is pre-processed before entering filters pressing container (1), and the pretreatment refers to be dehydrated by mechanism filter-pressing, and sludge is contained
Water rate is down to 75%~80%.
3. the sewage sludge dehydration device that electro-osmosis according to claim 1 or 2 is coupled with mechanism filter-pressing, feature exist
In: sewage sludge enters filters pressing container (1), is powered using DC power supply (4) to the anode plate (2) and cathode plate (3), described
Anode plate (2) under the driving of hydraulic system, it is mobile to cathode plate (3), while electroosmotic dewatering, keep anode plate
(2) pressure between cathode plate (3), to realize the coupling dehydration of electro-osmosis and mechanism filter-pressing；The progress being dehydrated with coupling,
The moisture percentage in sewage sludge of anode plate (2) is low, sludge drying, disconnects DC power supply (4) at this time, stops electroosmotic dewatering, and increase sun
Pressure between pole plate (2) and cathode plate (3) realizes high-pressure machinery filter-press dehydration, to further decrease moisture content.
4. the sewage sludge dehydration device that electro-osmosis according to claim 3 is coupled with mechanism filter-pressing, it is characterised in that: institute
Stating hydraulic system includes hydraulic cylinder (6.1) and high-low pressure regulating device (6.2), the piston rod of the hydraulic cylinder (6.1)
It is connect with anode plate (2), the high-low pressure regulating device (6.2) is connected with the hydraulic cylinder (6.1).
5. the sewage sludge dehydration device that electro-osmosis according to claim 4 is coupled with mechanism filter-pressing, it is characterised in that:
It is provided with sucker (8) below cathode plate (3), the sucker (8) is sheathed on cathode plate (3), by pushing sucker (8) to become
Shape generates vacuum degree by volume change, so that sucker (8) generates the restoring force of suck-back, to adsorb water at cathode plate (3)
Point.
6. the sewage sludge dehydration device that electro-osmosis according to claim 5 is coupled with mechanism filter-pressing, it is characterised in that: institute
The sucker (8) stated is hemispherical dome structure made of elastic material, and outer ring sealing is fixed on the outer edge of cathode plate (3), inhales
The middle and lower part of disk (8) is connected with thrust mechanism (9), and sucker (8) lower end is connected with drainpipe (10) and electromagnetic switch (11), electromagnetism
Switch the opening and closing of (11) control drainpipe (10).
7. the sewage sludge dehydration device that electro-osmosis according to claim 6 is coupled with mechanism filter-pressing, it is characterised in that: institute
The sewage sludge dehydration device stated is using alternately pressure swing type dehydration mode, after the high-pressure machinery filter-press dehydration, between two-plate
Moisture content becomes uniformly, then the coupling dehydration of electro-osmosis mechanism filter-pressing is carried out again, so on circulate until reaching expected sludge
Water content requirement.
8. the sewage sludge dehydration device that electro-osmosis according to claim 7 is coupled with mechanism filter-pressing, it is characterised in that: institute
Electromagnetic switch (11), thrust mechanism (9) and the hydraulic system stated are connected with controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610458535.2A CN106396303B (en) | 2016-06-21 | 2016-06-21 | The sewage sludge dehydration device that electro-osmosis is coupled with mechanism filter-pressing |
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| CN201610458535.2A CN106396303B (en) | 2016-06-21 | 2016-06-21 | The sewage sludge dehydration device that electro-osmosis is coupled with mechanism filter-pressing |
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| CN106396303B true CN106396303B (en) | 2019-03-26 |
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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 |
| 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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