CN104671632B - Batch-type electro-osmosis deep dehydration device for sludge and method - Google Patents
Batch-type electro-osmosis deep dehydration device for sludge and method Download PDFInfo
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- CN104671632B CN104671632B CN201510105262.9A CN201510105262A CN104671632B CN 104671632 B CN104671632 B CN 104671632B CN 201510105262 A CN201510105262 A CN 201510105262A CN 104671632 B CN104671632 B CN 104671632B
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Abstract
The present invention relates to batch-type electro-osmosis deep dehydration device for sludge and method.The equipment includes closed framework, and anode assemblies and cathode assembly are mounted with framework；Cathode assembly includes the driving wheel group for being supported in lower frame, is arranged with end to end negative electrode filter cloth annular in shape, is provided with minus plate on the inside of negative electrode filter cloth in driving wheel group；Anode assemblies include one group of positive plate relative with minus plate, are supported in the fixed seat of framework upper, and Jing driving members are supported in fixed seat positive plate respectively；Positive plate is provided with anode filter cloth away from the side of driving member；Treatment of Sludge space is formed between positive plate and minus plate；Anode plate surface is sequentially provided with intermediate layer and surface-active layer.The method includes：Startup stage, normal circulation working stage, ending phase.The present invention can extend anode service life, and reduce power consumption；The biochemical sludge of moisture content 80～85% can be dehydrated to moisture content 55～60%.
Description
Technical field
The present invention relates to a kind of batch-type electro-osmosis deep dehydration device for sludge and method, using electro-osmosis technology to sewage
The biochemical sludge for the treatment of plant carries out deep dehydration process, belongs to electrochemical techniques and Sewage Sludge Treatment Techniques field.
Background technology
According to the applicant understood, current town domestic sewage is processed, using microbial metabolism
Organic pollution in sewage is converted into stable innocuous substance by effect.The technique can produce a large amount of biochemistry in processing procedure
Sludge, if being not good to specific resistance to filtration, will bring high risks to environment.Specific resistance to filtration requires to reach " minimizing, steady
Fixedization, innoxious, resource " requires that the minimizing in " four change " is basis, and minimizing is exactly sludge dehydrating and drying process, is appointed
A kind of final process disposal method of sludge is all premised on deeply dehydrating sludge.
Biochemical sludge is different from the sludge of general nature circle silt shape, its constitute the microorganism that mainly loses life and its
Carrier.The dehydration and drying of biochemical sludge has larger difference with the dehydration and drying of general chemical engineering process, this is because biochemical dirty
The version that moisture is present in mud is different with the conventional chemical products that need to be dried.In biochemical sludge, moisture is with 4 kinds of forms
Exist, wherein account for 70～75% with reference to water, Interstitial Water accounts for 20～25%, also a small amount of Free water and capillary water.With reference to water
It is present in the microbial cell of sludge, only will further could be removed after breaking-wall cell.Traditional mechanism filter-pressing technique
The Interstitial Water in sludge can only be removed, moisture percentage in sewage sludge is down to into 80～85%.Further, by moisture percentage in sewage sludge from 80～85%
It is down to the deep dehydration of less than 55～60% processing procedure as biochemical sludge.The purpose of deeply dehydrating sludge process is sludge
Minimizing, is that follow-up sludge treatment lays the first stone and creates conditions.
The combination water that it is critical only that in removing sludge flco of biochemical sludge deep dehydration, and remove and exist with reference to the key of water
In microbial cell broken wall.Existing biochemical sludge deep dehydration handling process is mainly nature drying process, heat drying technique
Add high pressure squeezing process with chemical conditioning.
Natural drying process carries out dehydration and drying process to sludge using nature thermal source (solar energy), and the technique needs huge
Drying bed, rely on weather conditions, process time is long, while foul gas volatilization in processing procedure, easily brings secondary pollution,
Therefore the application of the technique is restricted.The power consumption of heat drying technique is big, and equipment is complicated, and investment and operating cost are also very high.
The chemical conditioning squeezing process that adds high pressure cooks sludge conditioner due to the addition of the inorganic salts such as large quantities of lime, molysite, increased absolutely
The amount of dewatered sludge, while making the structure of dehydrated sludge, composition, property there occurs change, brings all to follow-up sludge treatment
Many problems.
Electroosmotic dewatering technique is based on electrochemical principle, and biological sludge carries negative electrical charge, is to balance these electric charges, sludge
In grain surface meeting adsorbing medium, the ion of oppositely charged constitutes electric double layer.Band electrochondria under External Electrical Field, in electric double layer
Son does displacement relative to electrode surface.After biological cell broken wall, sludge face south Ghandler motion move, its intracellular water to movable cathode,
Removing is discharged through negative electrode, this phenomenon is electroosmotic dewatering.
Electro-osmosis sludge dehydration process Electrode reaction is as follows：
Anode reaction：2H2O→4H++O2+4e-
Cathode reaction：2H2O+2e-→4OH-+H2
Electroosmotic dewatering technique is new, the high efficiency technical to biochemical deeply dehydrating sludge mummification.
The technique dewatering speed is fast, was typically capable of achieving sludge quantity in 6～12 minutes and halves, moisture content of the cake take off to
Less than 60%.The principal element of electro-osmosis sludge dewatering is affected to have：Electric-field intensity, pressure, process time, sludge blanket thickness.
Electroosmotic dewatering technique be it is a kind of see, known dewatering type, but also there is many asking in its industrial applications
Topic.
Existing electro-osmosis device for dehydrating sladge waste mainly has two kinds of versions.One class is former based on belt filter press technology
Reason, squeezes mode using roller.Equipment negative and positive extremely roller, negative and positive interpolar have strainer, clamp sludge, apply in anode and cathode between strainer
Press dewatering is carried out under conditions of added electric field.It is another kind of be anode and cathode using parallel caterpillar conveyer version, anode
On top, in bottom, upper and lower track conveyor runs simultaneously negative electrode crawler belt crawler belt, energization pressurizing and dehydrating.Existing equipment it is common
Feature is anode and cathode while relative motion, its course of work is continuous.
Electroosmotic dewatering equipment also has other structures form, but regardless of version, can all encounter anode makes
With two big technical barriers of short life and electro-osmosis power consumption, the commercial Application of the technology is caused to be difficult to realize, equipment can not be grown
Phase reliability service.
Jing retrievals find that the Chinese utility model of 201420024155.4 Authorization Notice No. CN203728697U of the patent No. is special
Profit discloses a kind of electroosmotic dewatering machine, and the filter cloth of the electroosmotic dewatering machine drives dress by the filter cloth installed in frame low order end
Driving is put, filter cloth driving means are connected with cleaning device；Minus plate is installed in the frame above filter cloth, above minus plate is
Installed in the positive plate that positive plate is supported, the top that positive plate is supported is provided with multiple anode oil pressure and lifting device；Frame
Sludge distribution device is installed above the filter cloth of high order end, sludge distribution device left end is provided with into mud device.The patent mainly solves mud
Cake arrangement is uneven, and mud cake width can not be adjusted, and during pressure infiltration, the problems such as mud, filtrate receiver deposition is run in both sides.
The Chinese invention patent application of 201310737708.0 application publication number CN104098250A of application number discloses one
Kind of municipal sludge chemical conditioning reinforcing preliminary mechanical dehydration joint electro-osmosis two-stage deep dehydration method, accounts for sludge and does by adding
The composite conditioner of base weight 3-30%, carries out conditioning to the thickened sludge that sewage treatment plants moisture content is 97% or so and changes
Property, improve the dehydration of sludge preliminary mechanical and follow-up electroosmotic dewatering ability；Conditioning modified sewage sludge sludge after preliminary hydro-extraction contains
Water rate is reduced to 70-85%；Preliminary hydro-extraction sludge is directly entered electroosmotic dewatering equipment and carries out deep dehydration, moisture percentage in sewage sludge drop
As little as 40-60%；Dehydrated sludge can directly carry out landfill stabilization, thermal transition, building materials and utilize etc. processing, disposing and resource profit
With.The method is capable of achieving the continuous operation of sludge dewatering, and treatment effeciency is high；The combination water content in sludge can be effectively reduced, is taken off
Water effect is good, and deep dehydration moisture content of the cake is low.It is not only suitable for newly-built sewage treatment plant；It is suitable for existing sewage treatment plant again
The design requirement of the reconstruction of sludge dewatering treatment, enlarging and emergency preplan.
But, it is short and electric that the prior art with above-mentioned two pieces patent document as representative still cannot solve anode service life
Two big technical barriers of infiltration power consumption.
The content of the invention
The technical problem to be solved is：A kind of problem for overcoming prior art to exist, there is provided batch-type electric osmose
Deep dehydration device for sludge and the method using the equipment, can extend anode service life, and reduce power consumption thoroughly.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of batch-type electro-osmosis deep dehydration device for sludge, including closed framework, are mounted with anode assemblies in framework
And cathode assembly；Cathode assembly includes the driving wheel group for being supported in lower frame, is arranged with end to end in ring in driving wheel group
The negative electrode filter cloth of shape, is provided with minus plate on the inside of negative electrode filter cloth；Anode assemblies include one group of positive plate relative with minus plate, support
In the fixed seat of framework upper, Jing driving members are supported in fixed seat positive plate respectively；Positive plate is set away from the side of driving member
There is anode filter cloth；Treatment of Sludge space is formed between positive plate and minus plate；The material of positive plate be titanium metal material, positive plate
Surface is sequentially provided with intermediate layer and surface-active layer, and the material in intermediate layer is SnO2-Sb2Ox-La2O3Composite, surface-active
The material of layer is MnO2Material.
It is in the structure, on the one hand, anode filter cloth and negative electrode filter cloth are respectively equipped with the outside of positive plate, minus plate, dirty during process
Mud is clamped between anode filter cloth and negative electrode filter cloth, with positive plate directly contact, will not reduce the probability of positive plate coating abrasion,
So as to extend positive plate service life.On the other hand, using SnO2-Sb2Ox-La2O3The intermediate layer of composite can be conducive to resistance
Gear surface new life oxygen is spread to titanium-based, so as to reduce the risk of titanium-based passivation；Surface-active layer MnO2With intermediate layer SnO2-
Sb2Ox-La2O3Good solid solution can be formed, make coating closely knit, increased coating mechanical strength and and titanium-based material combination
Power, is conducive to extending the service life of coated electrode, it is to avoid its polarized in the course of the work, passivation and corrosion failure；Meanwhile,
The anode reaction of electro-osmosis is an oxygen evolution reaction, and the oxygen evolution potential for reducing electrode and the electric conductivity for improving pole plate are conducive to section
Province's power consumption, and the MnO that surface-active layer is adopted2Material not only has good electric conductivity, the even more height of oxygen evolution reaction
Active catalyst, its overpotential for oxygen evolution are very low, can so obtain significant power savings.
The further perfect technical scheme of present device is as follows：
Preferably, positive plate is fixed with intermediate insulation plate and outer layer insulation plate, outer layer successively towards the opposite side of driving member
Insulation board is connected with driving member end；Positive plate has permeable hole, and outer layer insulation plate has inlet opening, and intermediate insulation plate has cloth
Water hole groove and air discharge duct.
It is highly preferred that positive plate, intermediate insulation plate, outer layer insulation plate difference is rectangular；The water distribution hole slot of intermediate insulation plate
Including main intake chamber, branch road tank and water falling hole；Main intake chamber, branch road tank have bottom land respectively and are located at intermediate insulation plate
Away from the side of positive plate, water falling hole is located in branch road tank and runs through intermediate insulation plate；Main intake chamber is in annular shape, branch road water
Groove has one group and in strip, and branch road tank is overlapped with the radius of main intake chamber annulus, and one end of branch road tank is located at main water inlet
Groove annulus is interior, the other end is located at outside main intake chamber annulus；During branch road tank is scattered in centered on the main intake chamber annulus center of circle
Heart symmetric figure, branch road tank are connected with main intake chamber respectively, and branch road tank is not directly connected each other.
Using above-mentioned preferred version, when electro-osmosis is reacted back segment, anode tap sludge and forms the shell layer with high impedance,
Alkaline electro drain can be added on outer layer insulation board, the inlet opening of alkaline electro drain Jing outer layer insulation plates sequentially enters intermediate insulation plate
Main intake chamber, branch road tank and water falling hole realize being uniformly distributed, enter sludge shell eventually through the permeable hole of positive plate
Layer, be sustained sludge encrustation phenomena, to reduce sludge resistance, so need not improve in follow-up lasting dehydration voltage,
Increase power consumption, be conducive to energy-conservation；Additionally, the gas produced at the bootable positive plate of the air discharge duct of intermediate insulation plate is discharged.
Preferably, also including filter cloth gyroscope wheel group and tensioning wheel；Anode filter cloth is end to end annular in shape, and anode filter cloth is arranged
In filter cloth gyroscope wheel group, tensioning wheel is contacted with anode filter cloth, and tensioning wheel is with making to moving near the direction of anode filter cloth
The first state of anode filter cloth tensioning, and the second state for making anode filter cloth lax is moved to the direction away from anode filter cloth.
Using the preferred version, in electroosmotic dewatering, the motion that anode filter cloth relaxes as positive plate provides space, de-
At the end of water process, the tensioning of anode filter cloth is simultaneously moved with driving wheel group, by the clean workspace that partly moves to of anode filter cloth under
Single treatment, while the band sludge part of anode filter cloth is removed workspace for cleaning.
Preferably, also including sludge cloth component；Sludge cloth component include the sludge pump with mud inlet and mud mouth,
Pipeline and sludge distributing device；The mud mouth of sludge pump is connected with pipeline one end, and the pipeline other end is connected with sludge distributing device, sludge
Distributing device is located at the top of negative electrode filter cloth；Sludge distributing device has in flat trumpet-shaped opening, the opening width of sludge distributing device
Width of the degree less than or equal to negative electrode filter cloth.
Using the preferred version, can be by pending mud uniform distribution in negative electrode filter cloth surface, it is advantageously ensured that processing effect
Really.
Preferably, minus plate has one group, and in strip, minus plate is constituted Jing electrical connection and after being mechanically connected and is arranged minus plate
Arrange in the negative electrode chain of driving wheel group, negative electrode chain is ranked between negative electrode filter cloth and driving wheel group；Minus plate has permeable hole.
Preferably, also including exhaust gas treatment unit and air-introduced machine；Exhaust gas treatment unit has air inlet and gas outlet, air inlet
Mouth is connected with lower portion, and gas outlet Jing air-introduced machines lead to the external world.
Preferably, positive plate, minus plate are electrically connected with dc source respectively.
The present invention is also provided：Using the batch-type electro-osmosis deep dehydration method for sludge of aforementioned device, comprise the following steps：
The first step, startup stage, order perform S1 to S5：
S1. with mud inlet end cloth mud from sludge pump to negative electrode filter cloth, while driving wheel group drives negative electrode chain row and negative electrode filter cloth
Synchronous revolving is moved, and is made on the negative electrode filter cloth that pending mud is laid in Treatment of Sludge space；Afterwards, sludge pump and biography
Driving wheel group shuts down；
S2. anode filter cloth is relaxed, positive plate is moved to minus plate with first rate under driving member drive；
S3., when the spacing of positive plate and minus plate reaches preset value, positive plate and minus plate are connected with dc source,
And positive plate makes operating pressure positive plate and minus plate between progressively to increase to minus plate movement with the second speed, while passing through
Adjust dc source and progressively increase the electric-field intensity between positive plate and minus plate；First rate is more than the second speed；
S4. when operating pressure reaches default maximum pressure value and electric-field intensity reaches default maximum intensity value, positive plate
Stop movement, keep work at present pressure and electric-field intensity, while the sludge shell layer being formed about to positive plate adds alkaline electro
Drain, dipping sludge shell layer；
S5. judge whether to terminate current processed, if it is not, then keeping work at present pressure and electric-field intensity, and turn
To S5；If so, dc source is then closed, positive plate returns back to initial position under driving member drive, and goes to second step；
Second step, normal circulation working stage, order perform T1 to T3：
T1. driving wheel group drives negative electrode chain row and the motion of negative electrode filter cloth synchronous revolving, carries out mud extraction operation, by processed dirt
Mud device for transferring, and the negative electrode filter cloth after mud extraction is cleaned by cleaning equipment；Continued to negative electrode filter cloth with sludge pump simultaneously
Mud inlet end cloth mud, make on the negative electrode filter cloth that pending mud is laid in Treatment of Sludge space, afterwards sludge pump and biography
Driving wheel group shuts down；During negative electrode filter cloth mud extraction, cloth mud, anode filter cloth is tensioned, revolution rotates anode filter cloth,
Clean anode filter cloth is made in Treatment of Sludge space, and the anode filter cloth for being stained with sludge is cleaned by cleaning equipment；
At the end of negative electrode filter cloth cloth mud, stop cleaning anode filter cloth and negative electrode filter cloth；
T2. order performs S2, S3, S4；
T3. judge whether to terminate current processed, if it is not, then keeping work at present pressure and electric-field intensity, and turn
To T3；If so, then close dc source, positive plate returns back to initial position under driving member drive, and judge at sludge pump be
It is no to also have untreated sludge, T1 is gone to if having, and the 3rd step is gone to if nothing；
3rd step, ending phase：
Driving wheel group drives negative electrode chain row and the motion of negative electrode filter cloth synchronous revolving, carries out mud extraction operation, by processed sludge
Device for transferring, and the negative electrode filter cloth after mud extraction is cleaned by cleaning equipment；During negative electrode filter cloth mud extraction, anode is filtered
Cloth is tensioned, and revolution rotates anode filter cloth, and the anode filter cloth for being stained with sludge is cleaned by cleaning equipment；After cleaning terminates,
All power is closed, whole method terminates.
In the method, on the one hand, using batch-type working method, i.e., be segmented in chronological order, equipment in each time period
Specific task is completed for an operation；Operating characteristic is ordered into and intermittently operated, goes round and begins again, and circulates work.In electric osmose
Saturating work schedule section (i.e. S2 to S5 steps), minus plate is static, and the pending mud on negative electrode filter cloth is also static, is only
Positive plate is moved downward, and applies electric field and pressure to sludge, realizes dehydration；Under this working method not motion sludge to anode
The abrasion of plate surface coating, can extend anode service life.On the other hand, in electro-osmosis work schedule section (i.e. S2 to S5 steps)
Nested batch-type works subprogram, the characteristics of being incremented by according to sludge impedance, the electric-field intensity and operating pressure between cathode-anode plate by
Step strengthens：In S2, positive plate is quickly moved down from original position, is reached sludge blanket, is not applied electric field between the period pole plate；In S3,
Positive plate plate movement slows down, and continues slowly to move downward, applies pressure to sludge, while electric field is connected between positive negative electrode, sludge is applied
Plus electric-field intensity and operating pressure be incremented by with time duration, until preset maximum value, to adapt to sludge impedance in dehydration
Incremental characteristic；In S4, maximum working pressure (MWP) and electric-field intensity are kept, is persistently dehydrated；In S5, at the end of dehydration, unloading
Electric field and pressure, positive plate move reset upwards；Consequently, it is possible to electric-field intensity is not persistently to protect in the batch-type course of work
Maximum is held, but is targetedly changed in good time, can effectively reduce power consumption.Additionally, in S4, anode tap sludge is formed
Shell layer with high impedance, adds alkaline electro drain dipping sludge shell layer, can be sustained sludge encrustation phenomena, to reduce sludge
Resistance, so need not improve voltage in follow-up lasting dehydration, increase power consumption, be conducive to energy-conservation.
The further perfect technical scheme of the inventive method is as follows：
Preferably, in whole method running, by exhaust gas treatment unit and air-introduced machine continuous firing, electro-osmosis is taken off
The exhaust-gas treatment device for transferring of water generation；Cleaning equipment includes mechanical hairbrush and high-pressure air-water injection apparatus.
The present invention can extend anode service life, and reduce power consumption；Suitable for the life produced to sewage treatment plant
Sludge is processed, and whole process is not required to add any sludge conditioner, flocculant, coagulant, flocculation aid, can by moisture content 80～
85% biochemical sludge is dehydrated to 55～60%.
Description of the drawings
Structural representations of the Fig. 1 for the embodiment of the present invention.
Structural representations of the Fig. 2 for Fig. 1 embodiment anode assemblies.
Hole slot distribution schematic diagrams of the Fig. 3 for Fig. 1 embodiment intermediate insulation plates.
Fig. 4 is the schematic diagram that Fig. 1 embodiments sludge cloth component is coordinated with cathode assembly.
Fig. 5, Fig. 6 are respectively the front view and upward view of Fig. 1 embodiment sludge distributing devices.
Specific embodiment
With reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in further detail.But the invention is not restricted to
The example for going out.
Embodiment
As shown in figure 1, the present embodiment batch-type electro-osmosis deep dehydration device for sludge includes closed framework 1, in framework 1
It is mounted with anode assemblies and cathode assembly；Cathode assembly includes the driving wheel group 2 for being supported in 1 bottom of framework, covers in driving wheel group 2
End to end negative electrode filter cloth 3 annular in shape is provided with, minus plate 4 on the inside of negative electrode filter cloth 3, is provided with；Anode assemblies include one group and negative electrode
The relative positive plate 5 of plate 4, the fixed seat 6 for being supported in 1 top of framework, Jing driving members 8 are supported in fixed seat 6 to positive plate 5 respectively
On；Positive plate 5 is provided with anode filter cloth 7 away from the side of driving member 8；Treatment of Sludge is formed between positive plate 5 and minus plate 4 empty
Between；The material of positive plate 5 is titanium metal material, and 5 surface of positive plate is sequentially provided with intermediate layer and surface-active layer, the material in intermediate layer
Matter is SnO2-Sb2Ox-La2O3Composite, the material of surface-active layer is MnO2Material (is not shown).
Also include filter cloth gyroscope wheel group 14 and tensioning wheel 15；Anode filter cloth 7 is end to end annular in shape, and anode filter cloth 7 is arranged
In filter cloth gyroscope wheel group 14, tensioning wheel 15 is contacted with anode filter cloth 7, and tensioning wheel 15 is near the side of anode filter cloth 7
The first state of the tensioning of anode filter cloth 7 is made to motion, and moving to the direction away from anode filter cloth 7 makes anode filter cloth 7 relax
The second state.
Minus plate 4 has one group, and in strip, minus plate 4 is constituted Jing electrical connection and after being mechanically connected and is sheathed on biography minus plate 4
The negative electrode chain row of driving wheel group 2, negative electrode chain are ranked between negative electrode filter cloth 3 and driving wheel group 2；There is minus plate 4 permeable hole (not exist
Illustrate in figure).
Also include exhaust gas treatment unit 19 and air-introduced machine 20；Exhaust gas treatment unit 19 has air inlet and gas outlet, air inlet
Mouthful connect with inside framework 1, gas outlet Jing air-introduced machine 20 leads to the external world.
Positive plate 5, minus plate 4 are electrically connected with dc source (be not shown) respectively；Driving member 8 is hydraulic drives
Or mechanical transmissioning piece.
As shown in Figure 2 and Figure 3, positive plate 5 is fixed with intermediate insulation plate 9 successively towards the opposite side of driving member 8 and outer layer is exhausted
Listrium 10, outer layer insulation plate 10 are connected with 8 end of driving member；Positive plate 5 has permeable hole (being not shown), outer layer insulation
Plate 10 has inlet opening (being not shown), and intermediate insulation plate 9 has water distribution hole slot and air discharge duct (being not shown).Sun
Pole plate 5, intermediate insulation plate 9, outer layer insulation plate 10 distinguish rectangular；The water distribution hole slot of intermediate insulation plate 9 include main intake chamber 11,
Branch road tank 12 and water falling hole 13；Main intake chamber 11, branch road tank 12 have bottom land respectively and deviate from positioned at intermediate insulation plate 9
The side of positive plate 5, water falling hole 13 are located in branch road tank 12 and run through intermediate insulation plate 9；Main intake chamber 11 is propped up in annular shape
Road tank 12 has one group and in strip, and branch road tank 12 is overlapped with the radius of 11 annulus of main intake chamber, and the one of branch road tank 12
End is in 11 annulus of main intake chamber, the other end is located at outside 11 annulus of main intake chamber, and branch road tank 12 is scattered in main intake chamber
Centrosymmetric image centered on the 11 annulus centers of circle (the present embodiment is " M shape "), branch road tank 12 respectively with main intake chamber 11
It is connected, branch road tank 12 is not directly connected each other.
As shown in Figures 4 to 6, also including sludge cloth component；Sludge cloth component is included with mud inlet and mud mouth
Sludge pump 16, pipeline 17 and sludge distributing device 18；The mud mouth of sludge pump 16 is connected with 17 one end of pipeline, 17 other end of pipeline
Connect with sludge distributing device 18, sludge distributing device 18 is located at the top of negative electrode filter cloth 3；Sludge distributing device 18 has in flat loudspeaker
The opening of shape, the A/F of sludge distributing device 18 are less than or equal to the width of negative electrode filter cloth 3.
Batch-type electro-osmosis deep dehydration method for sludge of the present embodiment using aforementioned device, including：
The first step, startup stage, order perform S1 to S5：
S1. with mud inlet end cloth mud from sludge pump 16 to negative electrode filter cloth 3, while driving wheel group 2 drives negative electrode chain row and negative electrode
3 synchronous revolving of filter cloth is moved, and is made on the negative electrode filter cloth 3 that pending mud 21 is laid in Treatment of Sludge space；Afterwards, it is dirty
Dredge pump 16 and driving wheel group 2 shut down；
S2. anode filter cloth 7 is relaxed, positive plate 5 is moved to minus plate 4 with first rate under the drive of driving member 8；
S3. when the spacing of positive plate 5 and minus plate 4 reaches preset value, by positive plate 5 and minus plate 4 and dc source
Connect, and positive plate 5 makes operating pressure positive plate 5 and minus plate 4 between progressively to add to the movement of minus plate 4 with the second speed
Greatly, while progressively increasing the electric-field intensity between positive plate 5 and minus plate 4 by adjusting dc source；First rate is more than the
Two speed；
S4. when operating pressure reaches default maximum pressure value and electric-field intensity reaches default maximum intensity value, positive plate
5 stop movement, keep work at present pressure and electric-field intensity, while the sludge shell layer being formed about to positive plate 5 adds alkalescence
Conductance liquid, dipping sludge shell layer；
S5. judge whether to terminate current processed, if it is not, then keeping work at present pressure and electric-field intensity, and turn
To S5；If so, dc source is then closed, positive plate 5 returns back to initial position under the drive of driving member 8, and goes to second step；
Second step, normal circulation working stage, order perform T1 to T3：
T1. driving wheel group 2 drives negative electrode chain row and the motion of 3 synchronous revolving of negative electrode filter cloth, carries out mud extraction operation, will be processed
Sludge device for transferring, and the negative electrode filter cloth 3 after mud extraction is cleaned by cleaning equipment；Continued to negative electrode with sludge pump 16 simultaneously
The mud inlet end cloth mud of filter cloth 3, makes on the negative electrode filter cloth 3 that pending mud is laid in Treatment of Sludge space, afterwards sludge
Pump 16 and driving wheel group 2 shut down；During 3 mud extraction of negative electrode filter cloth, cloth mud, anode filter cloth 7 is tensioned, revolution turns
Dynamic anode filter cloth 7, makes clean anode filter cloth 7 in the Treatment of Sludge space, and by cleaning equipment to being stained with the anode of sludge
Filter cloth 7 is cleaned；At the end of 3 cloth mud of negative electrode filter cloth, stop cleaning anode filter cloth 7 and negative electrode filter cloth 3；
T2. order performs S2, S3, S4；
T3. judge whether to terminate current processed, if it is not, then keeping work at present pressure and electric-field intensity, and turn
To T3；If so, dc source is then closed, positive plate 5 returns back to initial position under the drive of driving member 8, and judges sludge pump 16
Whether place also has untreated sludge, and T1 is gone to if having, and if nothing goes to the 3rd step；
3rd step, ending phase：
Driving wheel group 2 drives negative electrode chain row and the motion of 3 synchronous revolving of negative electrode filter cloth, carries out mud extraction operation, by processed dirt
Mud device for transferring, and the negative electrode filter cloth 3 after mud extraction is cleaned by cleaning equipment；During 3 mud extraction of negative electrode filter cloth, by sun
Pole filter cloth 7 is tensioned, and revolution rotates anode filter cloth 7, and the anode filter cloth 7 for being stained with sludge is cleaned by cleaning equipment；Cleaning
After end, all power is closed, whole method terminates.
In whole method running, by 20 continuous firing of exhaust gas treatment unit 19 and air-introduced machine, by electroosmotic dewatering
The exhaust-gas treatment device for transferring of generation；Cleaning equipment includes that mechanical hairbrush and high-pressure air-water injection apparatus (do not show in figure
Go out).
Based on the present embodiment, the major technique design of the present invention is as follows：
Reaction mechanism and experimental results based on electroosmotic dewatering, the water pH value from negative electrode removing is more than 13, and hydrogen
Ion is assembled in anode, and the sludge pH for causing anode tap is 1～2.Under such highly acid working environment, anode pole is not only resulted in
Plate electrode is also easy to produce polarization phenomena and fails, and can also make that the electrochemical corrosion of anode is extremely serious, and electrode life is extremely short.This is
At present electro-osmosis device for dehydrating sladge waste not can normally continuously work, can not enter the first hang-up of practical application.
The difficult problem that polarization phenomena and electrochemical corrosion are damaged, the present invention are also easy to produce for electroosmotic dewatering technique middle-jiao yang, function of the spleen and stomach pole plate
Using anodic coating technology, anode and cathode double-layer filter cloth structure, and it is aided with triple solutions of batch-type working method.
First, the effective ways for making that coating is electrochemically resistant corrosion and polarizing polar plates are sintered in anode plate surface.This
The anode of bright design is coated titanium anode, i.e. DSA (Dimensional Stable Anode) anode, because which is not corroded
Cause to change size, also known as dimensional stable anode.Positive plate base material of the present invention from the high-quality titanium plate that purity is 99.9%, in titanium plate
Coating sintering SnO on surface2-Sb2Ox-La2O3Make intermediate layer and MnO2Make the metal oxide of surface active layer.Electrode polarization is
In electrolytic process, oxygen reacts to form titanium oxide and cause with titanium, SnO2-Sb2Ox-La2O3Composite coating is conducive to resistance as intermediate layer
Gear surface new life oxygen is spread to titanium-based, so as to reduce the risk of titanium-based passivation.Meanwhile, superficial layer MnO2And SnO2-Sb2Ox-La2O3
Good solid solution can be formed, is made coating closely knit, be increased the mechanical strength and the adhesion with titanium-based material of coating, be conducive to prolonging
The service life of long coated electrode, it is to avoid its polarized in the course of the work, passivation and corrosion failure.
Second, filter cloth is respectively mounted in negative and positive interpolar, pending sludge is clamped between double-layer filter cloth, not with battery lead plate
Directly contact, the probability damaged so as to reduce anodic coating.
3rd, existing electro-osmosis device for dehydrating sladge waste working method mostly is continuous work, and anode and cathode is simultaneously relative to transport
It is dynamic.Abrasion of the hard particulate that this working method mixes in problem is encountered that sludge at the volley to anode surface coating is tight
Weight, once coating local damage, will rapidly result in pole plate electrochemical corrosion and damage failure.The present invention adopts batch-type work side
Formula, i.e., be segmented in chronological order, and in each time period, equipment completes specific task for an operation.Operating characteristic is ordered into
And intermittently operated, go round and begin again, circulate work.In electro-osmosis active section, swinging negative electrode is static, treating on negative electrode filter cloth
It is also static to process sludge, is only that positive plate is moved downward, and applies electric field and pressure to sludge, realizes dehydration.This work
Under mode, not abrasion of the motion sludge to anode surface coating, has continued anode life.
Second difficult problem and key of electroosmotic dewatering equipment operation is how reducing energy consumption.Equipment maximum energy consumption is derived from
The electric field that two end of anode and cathode applies when electro-osmosis works, required electric-field intensity is related with pole plate electric conductivity to sludge resistance
's.Experimental study shows, with the discharge of moisture in the continuity of working time, sludge, sludge impedance in electroosmotic dewatering technique
In constantly increase, energy consumption is caused to rise, dewatering efficiency declines.Further experiment analysis is learnt, the characteristics of sludge layer impedance is formed
It is that the impedance of anode tap sludge is far above cathode terminal, the electrolyte solution loss that the later stage that particularly works is close in the sludge of anode tap is dangerous
To the greatest extent, one layer of closely knit dewatered sludge shell is formed, the high resistance of the shell layer causes power consumption to increase severely, and dehydrating effect declines.
For a difficult problem for reducing energy consumption in electroosmotic dewatering technique, three targetedly measures are this invention takes, not only
Significantly energy-conservation is realized, while improve dewatering efficiency.
First measure is to improve plate electric conductivity and reduce oxygen evolution potential.The anode reaction of electro-osmosis is one
Oxygen evolution reaction, the oxygen evolution potential for reducing electrode and the electric conductivity for improving pole plate are conducive to saving power consumption.Titanium-based of the present invention
Coated anode surface catalytic layer sinters MnO2, MnO2Not only there is good electric conductivity, the even more highly active catalytic of oxygen evolution reaction
Agent, its overpotential for oxygen evolution are low, and this measure can obtain significant power savings.
Second measure is, in electro-osmosis work schedule section nesting batch-type work subprogram, to be incremented by according to sludge impedance
Feature, applying electric-force gradient and pressure between pole plate progressively strengthens.The batch-type work：In S2, positive plate is quick from original position
Move down, reach sludge blanket, between the period pole plate, do not apply electric field；In S3, positive plate plate movement slows down, and continues slow fortune downwards
It is dynamic, pressure is applied to sludge, while electric field is connected between positive negative electrode, the electric-field intensity that sludge applies is prolonged with the time with operating pressure
It is continuous to be incremented by, until preset maximum value, to adapt to the characteristic that sludge impedance is incremented by dehydration；In S4, maximum functional is kept
Pressure and electric-field intensity, are persistently dehydrated；In S5, at the end of dehydration, electric field and pressure are unloaded, positive plate moves reset upwards；
Consequently, it is possible to electric-field intensity is not persistently to keep maximum in the batch-type course of work, but targetedly become in good time
Change, can effectively reduce power consumption.
3rd measure is that, in S4, anode tap sludge forms the shell layer with high impedance, adds the leaching of alkaline electro drain
Stain sludge shell layer, can be sustained sludge encrustation phenomena, to reduce sludge resistance, so be not required in follow-up lasting dehydration
Voltage to be improved, increase power consumption, are conducive to energy-conservation.
Power consumption can be reduced by 1/3 by Jing practical proofs, the resultant effect of above three measures, and energy-saving effect is notable.
In addition, device structure design innovation of the invention mainly has following three：
First, cathode form of the present invention is designed as chain-arranged type structure, intermittent-rotation working method.Negative electrode is several strips
Corrosion resistant plate with holes, Jing electrically with mechanical connection after formed negative electrode chain row.Monolithic cathode strip width 100mm, length be 1000～
2000mm, is provided with the aperture of 2～5mm of diameter of phi, and percent opening 3～5%, the moisture of electro-osmosis removing are connect from cathode aperture stream to bottom
Water pond is discharged.Swinging negative electrode chain 6～12 meters of the total length of row of hundreds of minus plate compositions, chain row are capable of achieving swinging and rotate,
Its rotation is interval, controlled.Enter mud cloth sequential section, chain row's uniform rotation, superposed negative electrode chain are accepted and uniform
The pending mud that sludge pump is sent.Electro-osmosis work schedule section, chain row are static, are constituted with the positive plate in portion disposed thereon
Parallel, horizontal electric field, carries out dehydrating operations to sludge therebetween.
Second, anode assemblies of the present invention are sandwich construction, component is exhausted by coated titanium anode plate, intermediate insulation plate, upper strata
Listrium is constituted.Positive plate is provided with the aperture of 2～5mm of Φ, and percent opening 3～5%, intermediate insulation plate are provided with anode tap contact surface end
Fan-shaped air discharge duct, when electro-osmosis works, the gas Jing anode plate holes of anode tap generation, intermediate insulation plate lower end air discharge duct are discharged.In
Between insulation board hole slot distribution：With branch road tank in intermediate insulation plate upper end, water falling hole is distributed in each branch road to circular main intake chamber
In tank, the inlet opening of solution Jing upper stratas insulation board into the circular main intake chamber of intermediate insulation plate upper end, branch road tank, drip
Hole, the aperture of positive plate enter sludge blanket.Back segment is reacted in electro-osmosis, when anode tap sludge produces high impedance, alkaline electro is added dropwise
Drain, into sludge shell layer, to reduce sludge resistance.Due to conductance drop dosage seldom, and water in the solution acellular, easily
Removing, therefore the increase of moisture in sludge will not be brought.Anode assemblies connect hydraulic drives, and controlling plate is moved up and down, and
Operating pressure is applied to the sludge of negative and positive interpolar.Equipment anode is connected and composed side by side by 5～10 components.
Third, the present invention arranges mobile double acting collaboration using sludge pump conveying and swinging negative electrode chain walks mud mode automatically.
Pending sludge Jing transfer pipelines are delivered to flat bell mouth shape outlet by sludge pump, and mud extraction is fallen on negative electrode filter cloth, and filter cloth exists
Driving wheel group drives lower translation, sludge to be evenly distributed on negative electrode filter cloth, and mud cloth is entered in collaborative work, realization automatically.
Device for dehydrating sladge waste of the present invention can configure PLC control system, equipment fully automatic working under PLC controls.Each when
The section working time at quarter can adjust, and voltage gradient, pressure and the sludge blanket thickness applied to sludge between electro-osmosis section cathode-anode plate is equal
It is adjustable, to ensure best operating condition and mud extraction moisture content.
Electroosmotic dewatering equipment of the present invention is closing, and its upper side has an air outlet, air outlet and emission-control equipment,
Air-introduced machine connects, exhaust-gas treatment using plasma exhaust gas treatment unit, the waste gas produced in the efficient process course of work.
The main beneficial effect of the present embodiment：
1. more reasonable to biological sludge organism flco breaking-wall cell using electro-osmosis method, required energy consumption is lower, dry with heat
Change method is compared, obvious energy conservation.
2. in the deep dehydration course of work, without any medicament, on follow-up any one sludge treating method without impact.
3. batch-type working method is adopted, it is convenient to adjust the electric-field intensity of negative and positive interpolar, mechanical pressure, duration
Deng running parameter, using electro-osmosis optimization, to be suitable for the sludge dewatering of various trait.
4.DSA anode constructions, thereon coating sintering SnO2-Sb2Ox-La2O3Make intermediate layer and MnO2Make surface active layer
Metal oxide composite coating, with good electric conductivity and very strong electrochemical corrosion resistant performance, long service life is significantly
Extend.
5. device structure is simple, easy to operate, fully automatic working, and equipment disposably puts into low, and operating cost is low.
Test case：
Device structure parameter：Swinging negative electrode chain structure, wide 1.1m, long 6.5m, 140 groups of long strip type stainless steel strips with holes,
Electrical connection, constitutes negative electrode chain.It is 5 pieces of coated titanium anode pole plates above negative electrode, pole plate is provided with certain amount aperture, pole plate table
Face coating sintering has SnO2-Sb2Ox-La2O3Make intermediate layer and MnO2Make the metal oxide composite coating of surface active layer, monolithic
Plate size：1.0m×1.0m.5 groups of hydrostatic transmission modules are connected with positive plate, control up and down motion and the tune of positive plate
Section forms mechanical pressure between pole plate sludge.
Equipment adopts batch-type working method.
Equipment enters startup program first：
The first step (T1 time periods), is started sludge pump and is arranged with swinging negative electrode chain and negative electrode filter cloth, and the two collaborative work is dirty
Mud is told in the negative electrode filter cloth upper end of revolution, negative electrode chain and negative electrode filter cloth uniform translation by the distributing device of flat bell mouth shape,
Pending sludge is distributed on cathode surface filter cloth, horn mouth width and the wide cooperation of pole plate, it is ensured that cloth mud works in pole plate
It is interval.Can detect that negative electrode chain movement distance, control plus mud cloth to negative electrode chain rafting dynamic 5 meters using position sensor herein, close
Stop sludge pump and swinging negative electrode chain, complete into mud cloth.Cloth mud region：5.0m × 1.0m, cloth mud 20～30mm of thickness.
Second step (T2 time periods), anode filter cloth relax, and work is divided into 3 sub- active sections.T21 moment sections, positive plate exist
Quickly move down under hydraulic drives control, control positive plate is moved at negative electrode chain 30mm distances, is close to sludge blanket.
T22 moment sections, between cathode-anode plate, dc source is connected, and anode slows down, and to move downward at a slow speed, the sludge between pole plate filter cloth is applied
Added electric field and pressure, carry out electroosmotic dewatering.With moisture removal in sludge, sludge resistance is incrementally increased, this period, two poles
Electric-field intensity and pressure between plate increases with time synchronized, until increasing to preset maximum value, the cell of sludge organism flco is broken
Bad, intracellular water is removed, and discharges from negative electrode, is collected and sends outside equipment.T23 moment sections, continue maximum functional pressure with electricity
Field intensity, while a small amount of alkaline electro drain is added dropwise from anode tap, the sludge shell layer of conductance immersion stain anode tap is effectively reduced
Sludge resistance, it is ensured that electroosmotic dewatering is persistently carried out.The sludge of negative and positive interpolar is compressed dehydration, and mud layer thickness is down to 10mm.
3rd step (T3 time periods), closes the power supply of negative and positive interpolar, and anode is quick upwards under hydraulic drives control to be moved
It is dynamic, negative electrode is left, power failure pressure release, anode movement to initial position stop, and equipment startup program is completed.
And then, equipment enters normal circulation working procedure：
When normal procedure works, sequence batch working hour is identical with startup program, it then follows：T1→T2(T21→T22→T23)
→ T3 work schedules.Except for the difference that, when T1 period negative electrode chains rafting dynamic, mud, rear end mud extraction, to the negative electrode after mud extraction are entered in front end
Filter cloth starts cleaning；Now anode filter cloth is tensioned and turns round rotation, the work of anode filter cloth cleaning mechanism, until entering mud, mud extraction knot
Beam, the cleaning of anode and cathode filter cloth also terminate.Mechanical hairbrush is cleaned flushing under high-pressure air-water injection to filter cloth.T2, T3 sequential
Section action, working time are identical.T1 → T2 → T3, goes round and begins again, and circulates work.
Finally, after pending mud fully enters processing equipment and is disposed, equipment enters power cut-off program：
Operate into mud extraction, and clean filter cloth, be then shut off all power supplys, equipment each several part resets, and wait starts work next time.
Exhaust gas treatment unit remains work with air-introduced machine.
Each work schedule section：
| Working hour | Working time (minute) |
| T1 | 3 |
| T21 | 1 |
| T22 | 6～8 |
| T23 | 2～4 |
| T3 | 2 |
The specific works time of T22, T23 can require setting according to the characteristic of sludge and final dewatering.
T22 periods, the pressure between pole plate increase to 25kPa from 0, and electric-field intensity is gradually increased to 40V/cm from 0.During T23
Section, pressure persistently keep 25kPa.With loss of moist, sludge blanket is thinning, sludge impedance increase, automatically controls, adjusts electric-field strength
Degree keeps 40V/cm.
380V AC conversions are the adjustable dc source of voltage x current by supporting power source special, supply anode and cathode work.
PLC control system ensures equipment fully automatic working.
In this test case, the biochemical sludge of moisture content 80～85% can be dehydrated to moisture content 55～60%.
Claims (9)
1. a kind of batch-type electro-osmosis deep dehydration device for sludge, including closed framework, is characterized in that, placement in the framework
There are anode assemblies and cathode assembly；The cathode assembly includes the driving wheel group for being supported in lower frame, in the driving wheel group
End to end negative electrode filter cloth annular in shape is arranged with, on the inside of the negative electrode filter cloth, minus plate is provided with；The anode assemblies include one
The group positive plate relative with minus plate, the fixed seat for being supported in framework upper, Jing driving members are supported in admittedly the positive plate respectively
In reservation；The positive plate is provided with anode filter cloth away from the side of driving member；Sludge is formed between the positive plate and minus plate
Process space；The material of the positive plate is titanium metal material, and the anode plate surface is sequentially provided with intermediate layer and surface-active
Layer, the material in the intermediate layer is SnO2-Sb2Ox-La2O3Composite, the material of the surface-active layer is MnO2Material；Institute
Stating positive plate and being fixedly connected sequentially towards the opposite side of driving member has intermediate insulation plate and outer layer insulation plate, the outer layer insulation plate
It is fixedly connected with driving member end；The positive plate has permeable hole, and the outer layer insulation plate has inlet opening, and the centre is exhausted
Listrium has water distribution hole slot and air discharge duct.
2. batch-type electro-osmosis deep dehydration device for sludge according to claim 1, is characterized in that, the positive plate, centre
Insulation board, outer layer insulation plate difference are rectangular；The water distribution hole slot of the intermediate insulation plate include main intake chamber, branch road tank and
Water falling hole；The main intake chamber, branch road tank have bottom land and positioned at intermediate insulation backboard respectively from the side of positive plate, described
Water falling hole is located in branch road tank and runs through intermediate insulation plate；The main intake chamber has one group in annular shape, the branch road tank
And the branch road tank, in strip, the branch road tank is overlapped with the radius of main intake chamber annulus, the one of the branch road tank
End is in main intake chamber annulus, the other end is located at outside main intake chamber annulus；The branch road tank is scattered in be justified with main intake chamber
Centrosymmetric image centered on ring center, the branch road tank are connected with main intake chamber respectively, and the branch road tank is mutual
Between directly do not connect.
3. batch-type electro-osmosis deep dehydration device for sludge according to claim 1, is characterized in that, also including filter cloth gyroscope wheel
Group and tensioning wheel；The anode filter cloth is end to end annular in shape, and the anode filter cloth cover is located in filter cloth gyroscope wheel group, described
Bearing up pulley is contacted with anode filter cloth, the tensioning wheel with to move near the direction of anode filter cloth be tensioned anode filter cloth the
One state, and the second state for making anode filter cloth lax is moved to the direction away from anode filter cloth.
4. the batch-type electro-osmosis deep dehydration device for sludge according to any one of claims 1 to 3, is characterized in that, also include
Sludge cloth component；The sludge cloth component includes the sludge pump with mud inlet and mud mouth, pipeline and sludge distributing device；
The mud mouth of the sludge pump is connected with pipeline one end, and the pipeline other end is connected with sludge distributing device, the sludge cloth
Device is located at the top of negative electrode filter cloth；The sludge distributing device has in flat trumpet-shaped opening, and the sludge distributing device is opened
Width of the mouth width less than or equal to negative electrode filter cloth.
5. the batch-type electro-osmosis deep dehydration device for sludge according to any one of claims 1 to 3, is characterized in that, described the moon
Pole plate has one group, and in strip, the minus plate is constituted Jing electrical connection and after being mechanically connected and is sheathed on drive the minus plate
The negative electrode chain row of group, the negative electrode chain are ranked between negative electrode filter cloth and driving wheel group；The minus plate has permeable hole.
6. the batch-type electro-osmosis deep dehydration device for sludge according to any one of claims 1 to 3, is characterized in that, also include
Exhaust gas treatment unit and air-introduced machine；The exhaust gas treatment unit has air inlet and gas outlet, the air inlet and lower portion
The external world is led in connection, the gas outlet Jing air-introduced machines.
7. the batch-type electro-osmosis deep dehydration device for sludge according to any one of claims 1 to 3, is characterized in that, the sun
Pole plate, minus plate are electrically connected with dc source respectively.
8., using the batch-type electro-osmosis deep dehydration method for sludge of equipment described in any one of claim 1 to 7, it is characterized in that,
Comprise the following steps：
The first step, startup stage, order perform S1 to S5：
S1. with mud inlet end cloth mud from sludge pump to negative electrode filter cloth, while driving wheel group drives negative electrode chain row and negative electrode filter cloth synchronization
Gyration, makes on the negative electrode filter cloth that pending mud is laid in Treatment of Sludge space；Afterwards, sludge pump and drive
Group shuts down；
S2. anode filter cloth is relaxed, positive plate is moved to minus plate with first rate under driving member drive；
S3., when the spacing of positive plate and minus plate reaches preset value, positive plate and minus plate are connected with dc source, and sun
Pole plate is moved, the operating pressure between positive plate and minus plate is progressively increased to minus plate with the second speed, while by adjusting
Section dc source progressively increases the electric-field intensity between positive plate and minus plate；The first rate is more than the second speed；
S4., when operating pressure reaches default maximum pressure value and electric-field intensity reaches default maximum intensity value, positive plate stops
It is mobile, keep work at present pressure and electric-field intensity, while the sludge shell layer being formed about to positive plate add alkaline electro drain,
Dipping sludge shell layer；
S5. judge whether to terminate current processed, if it is not, then keeping work at present pressure and electric-field intensity, and go to S5；
If so, dc source is then closed, positive plate returns back to initial position under driving member drive, and goes to second step；
Second step, normal circulation working stage, order perform T1 to T3：
T1. driving wheel group drives negative electrode chain row and the motion of negative electrode filter cloth synchronous revolving, carries out mud extraction operation, processed sludge is arranged
Go out equipment, and the negative electrode filter cloth after mud extraction is cleaned by cleaning equipment；Entering to negative electrode filter cloth is continued with sludge pump simultaneously
Mud end cloth mud, makes on the negative electrode filter cloth that pending mud is laid in Treatment of Sludge space, afterwards sludge pump and drive
Group shuts down；During negative electrode filter cloth mud extraction, cloth mud, anode filter cloth is tensioned, revolution rotates anode filter cloth, makes to do
Net anode filter cloth is in Treatment of Sludge space, and the anode filter cloth for being stained with sludge is cleaned by cleaning equipment；Work as the moon
At the end of the filter cloth cloth mud of pole, stop cleaning anode filter cloth and negative electrode filter cloth；
T2. order performs S2, S3, S4；
T3. judge whether to terminate current processed, if it is not, then keeping work at present pressure and electric-field intensity, and go to T3；
If so, dc source is then closed, positive plate returns back to initial position under driving member drive, and judges whether also have at sludge pump
Untreated sludge, goes to T1 if having, and if nothing goes to the 3rd step；
3rd step, ending phase：
Driving wheel group drives negative electrode chain row and the motion of negative electrode filter cloth synchronous revolving, carries out mud extraction operation, processed sludge is discharged
Equipment, and the negative electrode filter cloth after mud extraction is cleaned by cleaning equipment；During negative electrode filter cloth mud extraction, by anode filter cloth
Tightly, revolution rotates anode filter cloth, and the anode filter cloth for being stained with sludge is cleaned by cleaning equipment；After cleaning terminates, close
All power, whole method terminate.
9. batch-type electro-osmosis deep dehydration method for sludge according to claim 8, is characterized in that, ran in whole method
Cheng Zhong, by exhaust gas treatment unit and air-introduced machine continuous firing, the exhaust-gas treatment that electroosmotic dewatering is produced device for transferring；It is described
Cleaning equipment includes mechanical hairbrush and high-pressure air-water injection apparatus.
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| CN104973747A (en) * | 2015-06-25 | 2015-10-14 | 天津霍普环保科技有限公司 | Electro-osmosis sludge dewatering system |
| CN106219917B (en) * | 2016-08-25 | 2019-03-05 | 宁波市海智材料产业创新研究院 | A kind of device and its minimizing technology of quick removal Heavy Metals in Sludge |
| CN106746465B (en) * | 2017-01-18 | 2023-02-28 | 河南工程学院 | Continuous electroosmosis sludge dewatering system and sludge dewatering method thereof |
| CN107098565B (en) * | 2017-06-21 | 2023-04-14 | 常州双晋海逸环保科技有限公司 | Vertical electric field multilayer type sludge electric dehydration device and working method thereof |
| CN110076182A (en) * | 2018-01-26 | 2019-08-02 | 蔡永辉 | A kind of bicyclic synchronous circulating type is electronic-permeable reactive barrier soil remediation equipment |
| CN110031534A (en) * | 2019-04-12 | 2019-07-19 | 上海同臣环保有限公司 | A kind of sludge electroosmotic is dehydrated shale evaluating apparatus and evaluating method thoroughly |
| CN111762985A (en) * | 2020-08-03 | 2020-10-13 | 哈工大机电工程(嘉善)研究院 | High-efficient electroosmosis sludge drying treatment equipment |
| 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 |
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| CN203728697U (en) * | 2014-01-15 | 2014-07-23 | 江苏碧诺环保科技有限公司 | Electroosmosis dehydrator |
| CN103787568B (en) * | 2014-02-24 | 2016-05-18 | 南京赛佳环保实业有限公司 | Anode and manufacturing process thereof for electro-osmosis device for dehydrating sladge waste |
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