CN105923952B - Sewage sludge electro-osmosis filters pressing cooperates with dehydration device - Google Patents
Sewage sludge electro-osmosis filters pressing cooperates with dehydration device Download PDFInfo
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- CN105923952B CN105923952B CN201610451219.2A CN201610451219A CN105923952B CN 105923952 B CN105923952 B CN 105923952B CN 201610451219 A CN201610451219 A CN 201610451219A CN 105923952 B CN105923952 B CN 105923952B
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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
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Abstract
The invention discloses a kind of sewage sludge electro-osmosis filters pressings to cooperate with dehydration device, container (3), anode plate (4) and cathode plate (5) are squeezed including electro-osmosis, the anode plate (4) and cathode plate (5) setting squeeze in container (3) in electro-osmosis, under electric field force effect, mud granule is moved to anode plate, hydrone is moved to cathode plate, and apply the pressure between anode plate and cathode plate, so that the moisture that electric osmose appears is flowed out from electro-osmosis squeezing dehydration device；After completing above-mentioned electroosmotic dewatering, the moisture percentage in sewage sludge of anode plate (4) is low, sludge drying, then stop electroosmotic dewatering, and increase the pressure between anode plate (4) and cathode plate (5), super-pressure machinery filter-press dehydration is realized, so that moisture content is uniform between two-plate.The collaboration dewatering type that electro-osmosis of the present invention coupling dehydration and mechanical superelevation press-dehydrating combine greatly reduces the energy consumption of dehydration, it is processed by the invention after moisture percentage in sewage sludge it is lower.
Description
Technical field
The present invention relates to sewage sludge process field, specifically a kind of sewage sludge electro-osmosis filters pressing collaboration dehydration dress
It sets.
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 is also easy corruption or can be discharged into environment, and causes 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.
Contain 4 kinds of form moisture, i.e. Free water, absorption water, capillary water and internal water in sludge.Adsorb water, capillary water and
Although internal water only accounts for the fraction of sludge water content, the quality of its total content or remote super dewatered sludge, not using conventional method
It easily removes, moisture percentage in sewage sludge is difficult to further decrease.The special flocculation structure of sludge be influence deeply dehydrating sludge it is main because
Element, it mainly wraps up the suspended particulate in absorption water by the extracellular polymeric of high degree of hydration (EPS) and is formed, with special pair
Electric layer structure causes sludge settling property and dewatering very poor.Realize the deep dehydration of sludge, it is necessary to destruction sludge first
Special flocculation structure, discharge bound moisture, weaken Sludge Surface hydrophily.
Electroosmotic dewatering technology exactly utilizes a kind of special double electrical layers existing for sludge and realizes dehydration.Sludge sludge
Particle is negatively charged, and hydrone is positively charged, and under electric field force effect, electronegative mud granule is moved toward anode plate, and band is just
Electric hydrone is moved toward cathode plate.As a kind of novel, green, efficient solid-liquid separation technique, electroosmotic dewatering technology due to
Have many advantages, such as that good dewatering, flexibility are high, pollution-free, controllability is strong, receives significant attention in recent years, it is more and more
Researcher be applied in sludge dewatering, to achieve the purpose that sludge carry out 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 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 sludge reduction is dehydrated, does not change the property of sludge
Matter, ingredient do not increase new substance, on subsequent any sludge treating method without influence；Treatment process cleaning, without secondary dirt
Dye.
If the very high sludge of moisture content is directly entered electro-osmosis, need to remove a large amount of moisture, will increase substantially
The energy consumption of electro-osmosis, it is necessary to before electroosmotic dewatering, preliminary hydro-extraction be carried out to sludge using the method for mechanical dehydration, so that dirty
Mud moisture content enters back into electroosmotic dewatering after reaching certain degree, reaches optimal energy-saving effect.
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 form sludge electroosmotic high mass dryness fraction thoroughly
Dehydration technique；(2) during electro-osmosis, the moisture content of sludge is quickly reduced near anode, and the production of electrochemical reaction gas
There is crack in raw and sludge cake, the contact area between sludge cake and electrode plate reduces, and causes sludge resistance to increase, electricity
Drop is flowed down, dehydrating effect is deteriorated；(3) in dehydration, electric field generation electric current has electric energy and is converted into thermal energy, makes sludge temperature liter
Height there are in fact energy consumption problem bigger than normal；(4) porous media of mud cake in a thickness direction is uneven, and anode layer sludge contains
Water rate 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 is directed to the quick desiccation of above-mentioned electro-osmosis anodic layer sludge of the existing technology,
The problems such as resistance increases sharply, electric current reduces rapidly, and energy consumption is high, moisture content is uneven, proposing one kind, low energy consumption, moisture content after dehydration
Low sewage sludge electro-osmosis machinery cooperates with dehydration device.
The technical solution of the invention is as follows, provides a kind of sewage sludge electro-osmosis filters pressing collaboration dehydration dress with flowering structure
It sets, including electro-osmosis squeezes container, anode plate and cathode plate, the anode plate and cathode plate setting squeezes container in electro-osmosis
Interior, under electric field force effect, mud granule is moved to anode plate, and hydrone is moved to cathode plate, and applies anode plate and cathode
Pressure between plate, so that the moisture that electric osmose appears is flowed out from electro-osmosis filters pressing collaboration dehydration device；Complete above-mentioned electric osmose
Thoroughly after dehydration, the moisture percentage in sewage sludge of anode plate is low, and electroosmotic dewatering effect is deteriorated, then stops electroosmotic dewatering, increases anode plate
Pressure between cathode plate realizes that super-pressure machinery filter-press dehydration further decreases dirt so that moisture content is uniform between two-plate
The moisture content of mud.
Using the above structure, compared with prior art, the present invention having the following advantages that：By using mechanism filter-pressing and electric osmose
It combines thoroughly, increases electrode plate and sludge closeness of contact, reduce resistance, electric current increases, and to promote dehydrating effect, and passes through
Superelevation press-dehydrating further decreases the moisture content of sewage sludge；Electro-osmosis coupling dehydration of the present invention is mutually tied with mechanical superelevation press-dehydrating
The collaboration dewatering type of conjunction greatly reduces the energy consumption of dehydration, it is processed by the invention after moisture percentage in sewage sludge it is lower.
As an improvement, cavernous body is arranged below the cathode plate, to absorb the moisture gathered on cathode plate, and by defeated
It send pressurizing unit to transfer out cavernous body, it is squeezed during transportation, get rid of the moisture of cavernous body absorption, formed
Dry cavernous body is in favor of next function of circular water absorption, in the process, conveys pressurizing unit for another cavernous body and is placed in cathode plate
Lower section.In this way, the outflow of cathode plate moisture can be accelerated, and replaced and squeezed by automatic mechanism, and
It is recycled.
As an improvement, the conveying pressurizing unit includes two the first rollers, two first rollers are equipped with
Conveyer belt, the conveyer belt are located at the underface of cathode plate, two cavernous bodies are arranged on the conveyer belt, at least in
Second tin roller is arranged in the top of one the first roller, which is less than the thickness of cavernous body with the gap of the second tin roller
Degree.In this way, it can use transferring roller and extruding movement done to cavernous body, be conducive to the exchange water suction of two cavernous bodies
And extruding.
As an improvement, the described electro-osmosis filters pressing collaboration dehydration device further includes hydraulic system, the hydraulic system with
The described anode plate connection, to drive anode plate to move, the hydraulic system includes hydraulic cylinder and high-low pressure regulating device,
Hydraulic cylinder is adjusted to the pressure of anode plate, to adapt to the different water smokings by high-low pressure regulating device.
As an improvement, the high-low pressure regulating device includes one-way throttle valve I, one-way throttle valve II, solenoid directional control valve
I, solenoid directional control valve II, low pressure direct-acting overflow valve, high voltage straight moving overflow valve, pilot operated compound relief valve and hydraulic pump, it is described
One-way throttle valve I, one-way throttle valve II are connect with the oil inlet and outlet of hydraulic cylinder and solenoid directional control valve I respectively, the guide
Formula overflow valve is connect with solenoid directional control valve I and solenoid directional control valve II, the solenoid directional control valve II and low pressure direct-acting overflow valve,
The connection of high voltage straight moving overflow valve, the low pressure direct-acting overflow valve, high voltage straight moving overflow valve pass through solenoid directional control valve II
Adjustable hydraulic pump outlet pressure.
As an improvement, hydraulic system is exerted by the pressure between anode plate and cathode plate while electroosmotic dewatering,
It keeps electrode plate and sludge to be in close contact, reduces sludge resistance to improve electric current, sludge water content is from anode plate to cathode plate at this time
One-way movement；With the progress of electro-osmosis, the moisture percentage in sewage sludge of anode plate is low, sludge drying, then stops electroosmotic dewatering, and add
Pressure between big anode plate and cathode plate realizes super-pressure machinery filter-press dehydration, and sludge water content is simultaneously to anode plate and cathode
Plate movement, so that sludge water content becomes bidirectional-movement from one-way movement, so that moisture content is uniform between two-plate.
As an improvement, the electro-osmosis squeezing dehydration device further includes DC power supply, filter cloth, sealing plate and insulated ring, institute
The anode plate stated is multistage grid structure, and the upper end that electro-osmosis squeezes container is arranged in, and the cathode plate is slab construction, if
It sets and squeezes the lower end of container in electro-osmosis, the DC power supply positive and negative anodes are electrically connected with anode plate and cathode plate respectively.Anode
Plate uses multilayered structure so that when top layer's anode plate sludge drying, below several layers of sludge also still have certain humidity so that
The resistance increase of sludge slows down, and current reduction slows down, and improves dehydrating effect, alleviates current electro-osmosis sludge anode layer desiccation and bring
The dehydrating effect variation temperature difference.
As an improvement, the electro-osmosis squeezes, container filters pressing is intracavitary to be evenly arranged with multiple current resistor sensors, institute
The current resistor sensor stated is connected with controller, and the controller is connected with DC power supply.Using current sensor
Can be with the electric current of real-time detection sludge and resistance situation, and then the size of sludge water content driving force can be specified.Current resistor sensing
Device is connected with controller, and the controller is controlled to a power supply, and when electric current is too small, signal is transferred to controller, control
Device controls power supply, increases supply voltage, improves voltage gradient, and the electric current that sludge is flowed through keeps certain size, i.e.,
The power of driving moisture can also maintain certain size, improve dehydrating effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that sewage sludge electro-osmosis filters pressing of the present invention cooperates with dehydration device；
Fig. 2 is the flow diagram that the present invention works；
As shown, 1, oxidation cylinder, 2, sewage sludge import, 3, electro-osmosis extruding container, 4, anode plate, 5, cathode
Plate, 6, DC power supply, 7, filter cloth, 8, sealing plate, 9, insulated ring, 10, drainpipe, 11, adding of agent mouth, 12, spiral cylinder, 13,
Helical axis, 14, helical blade, 15, backboard, 16, gas supervisor, 17, gas service pipe, 18, cavernous body, the 19, first roller, 20,
Conveyer belt, 21, second tin roller, 22, hydraulic cylinder, 23, one-way throttle valve I, 24, one-way throttle valve II, 25, solenoid directional control valve I,
26, solenoid directional control valve II, 27, low pressure direct-acting overflow valve, 28, high voltage straight moving overflow valve, 29, pilot operated compound relief valve, 30, liquid
Press pump, 31, gate, 32, material inlet valve, 33, controller, 34, gas purifier, 35, air generator, 36, ozone generator,
37, current resistor sensor.
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.
As shown in Figure 1, the present invention is a part in dewatering system, which includes multiple links, and of the invention
What is involved is a kind of sewage sludge electro-osmosis filters pressings to cooperate with dehydration device, on the basis of describing embodiments of the present invention, this reality
It applies example entire dewatering system is described, to illustrate the present invention in the effect of entire dewatering system.Entire dewatering system packet
Spiral filter-pressing device, oxidation cylinder 1 and electro-osmosis filters pressing collaboration dehydration device are included, the front end of the spiral filter-pressing device is equipped with
The rear end of sewage sludge import 2, spiral filter-pressing device is connect with oxidation cylinder 1, the oxidation cylinder 1 and the electro-osmotic pressure
Filter collaboration dehydration device is connected；
Sewage sludge enters the front end of spiral filter-pressing device from the sewage sludge import of spiral filter-pressing device, in sewage sludge
Gravity under, realize gravity dehydration；Under the promotion of spiral filter-pressing device, sewage sludge forward impelling constantly goes to remove water
Point, while sludge volume reduces；Sewage sludge is exported from spiral filter-pressing device, into oxidation cylinder, is led in oxidation cylinder
Enter ozone, the sewage sludge and ozone hybrid reaction, the internal water in sewage sludge is released as Free water；Sewage
Sludge is exported from oxidation cylinder, is entered electro-osmosis filters pressing collaboration dehydration device and is carried out electroosmotic dewatering, acts in electric field force
Under, mud granule is moved to anode plate, and hydrone is moved to cathode plate, and applies the pressure between anode plate and cathode plate, is made
The moisture that electric osmose appears is obtained to flow out from electro-osmosis filters pressing collaboration dehydration device.
The electro-osmosis filters pressing collaboration dehydration device includes that electro-osmosis squeezes container 3, anode plate 4 and cathode plate 5, described
Anode plate 4 and the setting of cathode plate 5 squeezed in container 3 in electro-osmosis, completed in the described electro-osmosis filters pressing collaboration dehydration device
After electroosmotic dewatering, the moisture percentage in sewage sludge of anode plate is low, and electroosmotic dewatering effect is deteriorated, then stops electroosmotic dewatering, increases sun
Pressure between pole plate 4 and cathode plate 5 realizes super-pressure machinery filter-press dehydration, so that moisture content is uniform between two-plate, further
Reduce the moisture content of sludge.When the described super-pressure mechanism filter-pressing, pressure suffered by sludge is 3-5MPa.
The described electro-osmosis filters pressing collaboration dehydration device further includes DC power supply 6, filter cloth 7, sealing plate 8 and insulated ring 9, described
Anode plate 4 be multistage grid structure, be arranged in electro-osmosis squeeze container 3 upper end, the cathode plate 5 be slab construction,
The lower end that electro-osmosis squeezes container 3 is set, and 6 positive and negative anodes of DC power supply are electrically connected with anode plate 4 and cathode plate 5 respectively
It connects.It is respectively set multiple apopores on the anode plate 4 and cathode plate 5, the filter cloth 7 is laid in anode plate and cathode respectively
On plate.The sealing plate 8 is arranged on anode plate 4, and drainpipe 10 is arranged and is connected with the apopore of anode plate 4, using electricity
The opening and closing of the control drainpipe 10 of magnetic switch 10.1.It squeezes container 3, cathode plate 5 and electro-osmosis in anode plate 4 and electro-osmosis and squeezes and hold
Insulated ring 9 is set between device 3.Anode plate uses multilayered structure so that when top layer's anode plate sludge drying, below several layers of dirts
Mud also still has certain humidity, so that the resistance increase of sludge slows down, current reduction slows down, and improves dehydrating effect, alleviates current
Electro-osmosis sludge anode layer desiccation brings the dehydrating effect variation temperature difference.
The spiral filter-pressing device includes spiral cylinder 12, helical axis 13 and helical blade 14, the helical axis 13
It is installed in spiral cylinder 12 with helical blade 14, the helical blade 14 is arranged on helical axis 13, on helical axis 13
Backboard 15 is set and is located at the exit of spiral cylinder, the backboard 15 is installed on helical axis 13 by spring.
Inducer is added in spiral filter-pressing device and Compositional type flocculant, ozone gas enter spiral by gas pipeline
The hollow space of the helical axis of dehydration device, enters in spiral cylinder, and under helical blade and helical axis stirring, ozone is lured
It leads agent, Compositional type flocculant sufficiently to be contacted with sewage sludge, under inducer effect, ozone aoxidizes sludge, breaks
The flocculation structure of bad sludge, releases internal water, becomes readily removed Free water.By way of adding medicament, it can promote
Into the precipitation of internal water.The inducer and Compositional type flocculant are put by adding of agent mouth 11, adding of agent mouth position
In the front end of spiral cylinder 12.
The helical axis 13 is variable diameter setting, its diameter of axle becomes larger from front to back, and the helical blade 14 is varying pitch
Setting, its varying pitch becomes smaller from front to back, and the space of helical blade 14 and spiral cylinder 12, which reduces, squeezes sludge.Such as figure
Shown in 2, the helical axis 13 and helical blade 14 are two sets, and two helical axis parallel arrangeds, helical blade 14 intermeshes embedding
Enter, i.e., the helical blade 14 on one of helical axis 13 is embedded into the slot between the helical blade 14 of another helical axis 13
In.
The helical axis 13 is pierced by spiral cylinder 12, and extends into oxidation cylinder 1, in the spiral for protruding into oxidation cylinder 1
Gas is set on axis 13 and is responsible for 16, gas service pipe 17 is set on the gas supervisor 16.The rotation of helical axis 13 being capable of band
The intracorporal gas supervisor 16 of dynamic oxidation cylinder and gas service pipe 17 rotate, so as to promote ozone to the sewage for entering oxidation cylinder
The oxidation of sludge facilitates conversion of the internal water to Free water.
Cavernous body 18 is set below the cathode plate 5, to absorb the moisture gathered on cathode plate 5, and is squeezed by conveying
Pressure device transfers out cavernous body 18, squeezes during transportation it, and in the process, conveying pressurizing unit will be another
Cavernous body 18 is placed in 5 lower section of cathode plate.In this way, the outflow of cathode plate moisture can be accelerated.
The conveying pressurizing unit includes two the first rollers 19, and two first rollers 19 are equipped with conveyer belt
20, the conveyer belt 20 is located at the underface of cathode plate 5, and two cavernous bodies 18 are arranged on the conveyer belt 20, at least exist
Second tin roller 21 is arranged in the top of one of them the first roller 19, and the gap of first roller 19 and the second tin roller 21 is less than
The thickness of cavernous body 18.
The electro-osmosis filters pressing collaboration dehydration device further includes hydraulic system, the hydraulic system and the anode
Plate 4 connects, and to drive anode plate 4 to move, the hydraulic system includes hydraulic cylinder 22 and high-low pressure regulating device, passes through height
Low pressure regulating device adjusts hydraulic cylinder to the pressure of anode plate, to adapt to the different water smokings.The high-low pressure is adjusted
Device includes one-way throttle valve I 23, one-way throttle valve II 24, solenoid directional control valve I 25, solenoid directional control valve II 26, low pressure Direct Action Type
Overflow valve 27, high voltage straight moving overflow valve 28, pilot operated compound relief valve 29 and hydraulic pump 30, it is the one-way throttle valve I 23, unidirectional
Throttle valve II 24 is connect with the oil inlet and outlet of hydraulic cylinder 22 and solenoid directional control valve I 25 respectively, the pilot operated compound relief valve 29
It is connect with solenoid directional control valve I 25 and solenoid directional control valve II 26, the solenoid directional control valve II 26 and low pressure direct-acting overflow valve 27,
High voltage straight moving overflow valve 28 connects, and the low pressure direct-acting overflow valve 27, high voltage straight moving overflow valve 28 are changed by electromagnetism
To adjustable 20 outlet pressure of hydraulic pump of valve II 26.
While electroosmotic dewatering, hydraulic system is exerted by the pressure between anode plate 4 and cathode plate 5, keeps electricity
Pole plate and sludge are in close contact, and reduce sludge resistance to improve electric current；With the progress of electro-osmosis, the sludge of anode plate 4 is aqueous
Rate is low, sludge drying, then stops electroosmotic dewatering, and increases the pressure between anode plate 4 and cathode plate 5, realizes superpressure press for making
Tool filter-press dehydration, so that moisture content is uniform between two-plate.
Squeeze that 3 filters pressing of container is intracavitary to be evenly arranged with multiple current resistor sensors 37, electric current electricity in the electro-osmosis
Resistance sensor 37 may be provided on anode plate 4, also can be set on squeezing shell, the current resistor sensor 37
It is connected with controller 33, the controller 33 is connected with power supply 6, and controller 37 can be by 38 signal of current resistor sensor
Receive and carry out the movement of processing control power supply 6.
The exit of oxidation cylinder 1 is provided with gate 31, in the entrance of electro-osmosis filters pressing collaboration dehydration device
Equipped with imported valve 32.The controller 33 respectively with drive the motor of the first roller, electromagnetic switch, flashboard, material inlet valve,
Solenoid valve, overflow valve etc. are connected, and are controlled by controller.Gas purifier 34 is connected on the oxidation cylinder 1.Spiral
Filter-pressing device further includes air generator 35 and ozone generator 36, and the air generator 35 and ozone generator 36 pass through pipe
Road is connected with the front end of spiral-tube, and regulating valve is respectively set on pipeline.
Based on the dehydration device of the above present invention, following dewatering can be formed, is included the following steps：
1. the primary gravity dehydration stage：The sewage sludge of high-moisture percentage enters the front end of spiral dewatering device, in Sewage
Under the gravity of mud, gravity dehydration is realized；
2. the spiral water smoking：Under helical blade promotion, sewage sludge forward impelling in spiral dewatering device, constantly
Moisture removal is removed, while sludge volume reduces；
3. oxidation stage：Through step, 2. treated that sewage sludge is exported from spiral dewatering device, into oxidation cylinder,
Ozone, the sewage sludge and ozone hybrid reaction are passed through in oxidation cylinder, the internal water in sewage sludge is released
As Free water, in favor of being further dehydrated；
4. electro-osmosis mechanism filter-pressing couples the water smoking：It is defeated from oxidation cylinder through step 3. treated sewage sludge
Out, it enters electro-osmosis cylinder and carries out electroosmotic dewatering, under electric field force effect, mud granule is moved to anode plate, hydrone
It is moved to cathode plate, and applies the pressure between anode plate and cathode plate, so that the moisture that electric osmose appears is from electro-osmosis cylinder
Outflow.
The dewatering further includes：5. the super-pressure machinery filter-press dehydration stage：After 4. step is handled, anode plate
Moisture percentage in sewage sludge is low, sludge drying, then stops electroosmotic dewatering, and increases the pressure between anode plate and cathode plate, realizes super
High-pressure machinery filter-press dehydration, so that moisture content is uniform between two-plate.Dehydration is coupled through mechanism filter-pressing electro-osmosis after a period of time
Afterwards, anode plate moisture percentage in sewage sludge is very low, and resistance sharply increases, and electric current reduces, and causes electroosmotic dewatering effect to be deteriorated, by adopting
With superelevation press-dehydrating, the moisture content of sludge further reduced.In the present embodiment, it is related to " moisture content is uniform " and nisi equal
It is even, and referring to opposite previous stage becomes more evenly.
Step 4. in, mechanism filter-pressing is exerted by the pressure between anode plate and cathode plate, is provided by hydraulic system, described
4. hydraulic system is 0.05-0.5MPa to the pressure that anode plate applies in step.In dehydration carries out, since sewage quantity subtracts
It is few, so needing appropriate increase pressure, to keep electrode plate and sludge to be in close contact, sludge resistance is reduced to improve electric current.
The dewatering is using alternately pressure swing type dehydration mode, and after completing step 5., moisture content is uniform between two-plate
4. and 5. become uniformly, sequentially to enter step again at this time, so on circulate until reaching expected moisture percentage in sewage sludge requirement.By
5. make anode plate sludge by moisturizing again in using alternately pressure swing type dehydration mode, step, become from the dewatered sludge started
Wet mud, and electro-osmosis and mechanism filter-pressing coupling water smoking can be restored to.Alternately pressure swing type dehydration mode refers to coupling
It is dehydrated the alternating with superelevation press-dehydrating, pressure needed for the two is different, therefore referred to as transformation.
The pressure of the super-pressure machinery filter-press dehydration is also provided by hydraulic system, pressure 3-5MPa, passes through height
Regulating device is pressed to realize switching of the hydraulic system from low pressure toward high pressure.
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 (5)
1. a kind of sewage sludge electro-osmosis filters pressing cooperates with dehydration device, it is characterised in that：Container (3), sun are squeezed including electro-osmosis
Pole plate (4) and cathode plate (5), the anode plate (4) and cathode plate (5) setting squeeze in container (3) in electro-osmosis, in electric field
Under power effect, mud granule is moved to anode plate, and hydrone is moved to cathode plate, and applies the pressure between anode plate and cathode plate
Power, so that the moisture that electric osmose appears is flowed out from electro-osmosis squeezing dehydration device；After completing above-mentioned electroosmotic dewatering, anode plate
(4) moisture percentage in sewage sludge is low, sludge drying, then stops electroosmotic dewatering, and increases between anode plate (4) and cathode plate (5)
Pressure realizes super-pressure machinery filter-press dehydration, so that moisture content is uniform between two-plate；
The electro-osmosis squeezing dehydration device further includes hydraulic system, and the hydraulic system and the anode plate (4) are even
It connects, to drive anode plate (4) to move, the hydraulic system includes hydraulic cylinder (22) and high-low pressure regulating device, passes through height
Low pressure regulating device adjusts hydraulic cylinder to the pressure of anode plate, to adapt to the different water smokings；
The high-low pressure regulating device include one-way throttle valve I (23), one-way throttle valve II (24), solenoid directional control valve I (25),
Solenoid directional control valve II (26), low pressure direct-acting overflow valve (27), high voltage straight moving overflow valve (28), pilot operated compound relief valve (29) and
Hydraulic pump (30), the one-way throttle valve I (23), one-way throttle valve II (24) oil inlet and outlet with hydraulic cylinder (22) respectively
And solenoid directional control valve I (25) connection, the pilot operated compound relief valve (29) and solenoid directional control valve I (25) and solenoid directional control valve II
(26) it connects, the solenoid directional control valve II (26) and low pressure direct-acting overflow valve (27), high voltage straight moving overflow valve (28) are even
It connects, the low pressure direct-acting overflow valve (27), high voltage straight moving overflow valve (28) are adjustable by solenoid directional control valve II (26)
Hydraulic pump (20) outlet pressure.
2. sewage sludge electro-osmosis filters pressing according to claim 1 cooperates with dehydration device, it is characterised in that：In the cathode
Cavernous body (18) are set below plate (5), to absorb the moisture gathered on cathode plate (5), and by conveying pressurizing unit for sponge
Body (18) transfers out, and squeezes during transportation it, gets rid of the moisture of cavernous body (18) absorption, forms dry sea
Continuous body (18) is in favor of next function of circular water absorption, in the process, conveys pressurizing unit for another cavernous body (18) and is placed in cathode plate
(5) lower section.
3. sewage sludge electro-osmosis filters pressing according to claim 2 cooperates with dehydration device, it is characterised in that：The conveying
Pressurizing unit includes two the first rollers (19), and two first rollers (19) are equipped with conveyer belt (20), and described is defeated
Two cavernous bodies (18) are arranged, at least in the underface for sending band (20) to be located at cathode plate (5) on the conveyer belt (20)
Second tin roller (21) are arranged in the top of one the first roller (19), the gap of first roller (19) and the second tin roller (21)
Less than the thickness of cavernous body (18).
4. sewage sludge electro-osmosis filters pressing according to claim 3 cooperates with dehydration device, it is characterised in that：The electric osmose
Saturating squeezing dehydration device further includes DC power supply (6), filter cloth (7), sealing plate (8) and insulated ring (9), and the anode plate (4) is
Multistage grid structure is arranged and squeezes the upper end of container (3) in electro-osmosis, and the cathode plate (5) is slab construction, is arranged in electricity
Infiltration squeezes the lower end of container (3), and the DC power supply (6) positive and negative anodes are electrically connected with anode plate (4) and cathode plate (5) respectively
It connects.
5. sewage sludge electro-osmosis filters pressing according to claim 1 cooperates with dehydration device, it is characterised in that：The electric osmose
Squeeze that container (3) filters pressing is intracavitary is evenly arranged with multiple current resistor sensors (37), the current resistor sensor thoroughly
(37) it is connected with controller (33), the controller (33) is connected with DC power supply (6).
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| CN201610451219.2A CN105923952B (en) | 2016-06-21 | 2016-06-21 | Sewage sludge electro-osmosis filters pressing cooperates with dehydration device |
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| CN105923952B true CN105923952B (en) | 2018-11-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106865944B (en) * | 2017-02-23 | 2019-11-26 | 北京海斯顿水处理设备有限公司 | A kind of vacuum electric infiltration sludge drying device and its method |
| CN106904803B (en) * | 2017-03-24 | 2023-03-21 | 河南工程学院 | Conversion electrode type electroosmosis advanced oxidation sludge dewatering system and dewatering method thereof |
| CN107381996B (en) * | 2017-09-19 | 2023-05-26 | 上海国惠环保科技集团有限公司 | Electroosmosis filter-pressing cooperated sludge dewatering device |
| 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 |
| CN112851058A (en) * | 2020-12-24 | 2021-05-28 | 大地绿源环保科技(北京)有限公司 | Alternating-current voltage auxiliary belt type filter pressing equipment and sludge high-dryness dewatering method |
| CN113860702B (en) * | 2021-05-12 | 2023-09-19 | 中国计量大学 | Multi-field coupling automatic sewage sludge dehydration method |
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| CN100542652C (en) * | 2006-10-30 | 2009-09-23 | 天津大学 | Dewatering technology of mud and device |
| CN102506569B (en) * | 2011-11-30 | 2016-01-20 | 宜兴能达环保科技有限公司 | A kind of electroosmotic dewatering method of water-containing materials and device |
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Effective date of registration: 20181010 Address after: 311200 No. 3089 South Road, Xintang street, Xiaoshan District, Hangzhou, Zhejiang Applicant after: Hangzhou Norman Biotechnology Co., Ltd. Address before: 315470 126 Guangming Road, Simen Town, Yuyao City, Ningbo, Zhejiang Applicant before: Rao Binqi |
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Address after: 311200 No. 3089 South Road, Xintang street, Xiaoshan District, Hangzhou, Zhejiang Patentee after: Zhejiang Norman Environmental Protection Engineering Technology Co.,Ltd. Address before: 311200 No. 3089 South Road, Xintang street, Xiaoshan District, Hangzhou, Zhejiang Patentee before: HANGZHOU NORMAN BIOTECHNOLOGY Co.,Ltd. |