CN105923968A - Sewage sludge dewatering device based on cooperation of oxidization, electroosmosis and mechanical filter pressing - Google Patents
Sewage sludge dewatering device based on cooperation of oxidization, electroosmosis and mechanical filter pressing Download PDFInfo
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- CN105923968A CN105923968A CN201610458636.XA CN201610458636A CN105923968A CN 105923968 A CN105923968 A CN 105923968A CN 201610458636 A CN201610458636 A CN 201610458636A CN 105923968 A CN105923968 A CN 105923968A
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- osmosis
- sewage sludge
- oxidation
- pressing
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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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
Abstract
The invention discloses a sewage sludge dewatering device based on cooperation of oxidization, electroosmosis and mechanical filter pressing. The sewage sludge dewatering device comprises a spiral filter pressing device, an oxidation cylinder and an electroosmosis extrusion dewatering device, wherein a sewage sludge inlet is formed in the front end of the spiral filter pressing device; the rear end of the spiral filter pressing device is connected with the oxidation cylinder; the oxidation cylinder is communicated with the electroosmosis extrusion dewatering device; the electroosmosis extrusion dewatering device comprises an electroosmosis extrusion container, an anode plate, a cathode plate and a hydraulic system; the anode plate and the cathode plate are arranged in the electroosmosis extrusion container; after electroosmosis dewatering is completed by the electroosmosis extrusion dewatering device, the sludge water content of the anode plate is low, electroosmosis dewatering can be stopped, and pressure between the anode plate and the cathode plate is enlarged, so that ultrahigh pressure filter pressing dewatering is realized; the hydraulic system is connected with the anode plate, and the hydraulic system comprises a hydraulic oil cylinder and a high-low pressure regulating device. According to the sewage sludge dewatering device disclosed by the invention, high-water content sludge can be directly treated, and the dewatering energy consumption and the sludge water content are reduced through a multi-cooperation dewatering mode.
Description
Technical field
The present invention relates to sewage sludge process field, a kind of sewage collaborative based on oxidation electro-osmosis mechanism filter-pressing
Sludge dehydration device.
Background technology
Mud high-moisture percentage is the bottleneck that govern specific resistance to filtration, and the mud that moisture content is high is the most bulky, Er Qiesuo
A large amount of organic, the heavy metal contained and harmful microorganism are the most easily degenerated or are discharged in environment, cause secondary pollution, for
The follow-up landfill of mud, burning, recycling etc. all adversely affect.Therefore, deeply dehydrating sludge minimizing is
Treatment of Sludge primary and foremost purpose, minimizing is the basis realizing mud other " three change ", and mud is the most dry, and subsequent treatment is disposed more
Favorably.
Containing 4 kinds of form moisture in mud, i.e. Free water, absorption water, capillary water and internal water.Absorption water, capillary water and
Although internal water only accounts for the fraction of sludge water content, but the quality of the remote super dewatered sludge of its total content, employing conventional method is not
Easily removing, moisture percentage in sewage sludge is difficult to reduce further.The special flocculation structure of mud be affect deeply dehydrating sludge main because of
Element, it mainly by high degree of hydration extracellular polymeric (EPS) wrap up absorption water in suspended particulate and formed, it is special to have
Double electrical layers, cause sludge settling property and dewatering very poor.The deep dehydration of mud to be realized, it is necessary to the most broken
The special flocculation structure of bad mud, discharges bound moisture, weakens Sludge Surface hydrophily.In high-pressure decomposing mud, heat
Process, ultrasonic oxidation and ozone oxidation are decomposed in the methods such as cell, and ozone oxidation is the method that usefulness is the highest.This is because it is smelly
The oxidizing potential of oxygen is the highest, is a kind of strong oxidizer, and in water, resolution produces another kind more strong oxidizer-hydroxyl radical free radical
OH-, can destroy mud flocculent structure, makes microbial cell rupture and discharges intracellular organic matter and reach mud decrement and be prone to de-
The purpose of water.Additionally, ozone oxidation generates oxygen after decomposing, environment will not be worked the mischief.Therefore ozone becomes a kind of high
The high-grade water inorganic agent of effect non-secondary pollution.
Ozone oxidation effectively can carry out broken wall to mud, discharges internal water, but after processing, mud granule diminishes, current potential
Reduce and viscosity increases.So, carry out electroosmotic dewatering effect after using single ozone Oxidation Treatment more undesirable, need
Using a kind of comprehensive oxidation technology can realize mud broken wall makes again mud current potential increase and grain diameter increase.
The special double electrical layers of one that electroosmotic dewatering technology utilizes mud to exist just and realize dehydration.Mud mud granule
Electronegative, and hydrone positively charged, under electric field force effect, electronegative mud granule moves toward positive plate, and positively charged
Hydrone moves toward minus plate.As a kind of solid-liquid separation technique novel, green, efficient, electroosmotic dewatering technology due to
There is the advantages such as good dewatering, flexibility is high, pollution-free, controllability is strong, receive significant attention in recent years, more come
The most researchers are applied in the middle of sludge dewatering, to reaching to carry out mud the purpose of deep dehydration.
Compared with existing deeply dehydrating sludge technology (heat drying, chemical conditioning+high-pressure compressing method etc.), electroosmotic dewatering
Technology has the advantage of a series of uniqueness, is embodied in: good dehydrating effect, during electroosmotic dewatering, in electrification
Learning under reagentia, mud cell is moved generation Brownian movement, intracellular temperature liter by electro photoluminescence, electrolysis water directional strength
High, pressure increases so that membranolysis, and in part film, water flows out, and electroosmotic dewatering can remove tradition mechanical dehydration institute not
The portion of water that can remove, through electroosmotic dewatering, the moisture content of mud can be reduced to less than 60%；Compared with heat drying
There is certain power savings advantages, reduce sludge deep and process the expense of mummification；Simply sludge reduction is dehydrated, does not changes
The character of mud, composition, do not increase new material, on any one follow-up sludge treating method without impact；Processing procedure is clear
Clean, non-secondary pollution.
If mud the highest for moisture content is directly entered electro-osmosis, needs to remove substantial amounts of moisture, electric osmose will be increased substantially
Saturating energy consumption, it is necessary to before electroosmotic dewatering, uses the method for mechanical dehydration that mud is carried out preliminary hydro-extraction so that mud
Moisture content enters back into electroosmotic dewatering after reaching certain degree, reaches optimal energy-saving effect.
But, electroosmotic dewatering technology, as an emerging sludge dewatering technology, there is also following subject matter at present:
(1) the final moisture content of dehydrated sludge still has 50%-60%, is difficult to breakthrough 50%, it is difficult to form the saturating high mass dryness fraction of sludge electroosmotic
Dehydration technique；(2), during electro-osmosis, near anode, the moisture content of mud quickly reduces, and electrochemical reaction gas
Producing and crack occur in sludge cake, the contact area between sludge cake and battery lead plate reduces, and causes mud resistance to increase,
Electric current declines, and dehydrating effect is deteriorated；(3), in dehydration, electric field generation electric current has electric energy and is converted into heat energy, makes mud
Temperature raises, and there are in fact energy consumption problem bigger than normal；(4) mud cake porous media in a thickness direction is uneven, anode
Layer moisture percentage in sewage sludge is relatively low, and hydrone accumulates in cathode layer and causes moisture percentage in sewage sludge near minus plate higher.
Current also have employing alternating electric field to reduce the sludge drying impact on dehydrating effect, solves above-mentioned technical problem with part.
After alternating electric field is exactly electro-osmosis certain time, electrode reversal connection, inverse current flows through material bed, it is possible to decrease the electricity in material bed
Hinder and alleviate the electrochemical reaction of electrode, promote moisture backflow to solve current anode layer sludge drying problem simultaneously.By to beans
Rotten slag experiment finds, uses electrode reversal connection than work continuously, and electro-osmosis flow can improve more than 40%.Carry out with white clay
Exchange experiment, current ratio direct current final dewatering amount increases, but when frequency is higher, dewatering efficiency reduces on the contrary, uses alternation electricity
Field energy consumption is higher, and the more difficult control of frequency.Visible, use alternating electric field cannot fundamentally solve above-mentioned electroosmotic dewatering
The technical problem that technology exists.
Summary of the invention
In view of this, the present invention is directed to the electro-osmosis anodic quick mummification of layer mud that above-mentioned prior art exists, resistance
Increase sharply, electric current reduces rapidly, and the gas that simultaneous electrochemical process produces hinders electric current etc. to cause costs and poor dehydration results, energy consumption
High, the unequal problem of moisture content, proposes a kind of can directly to process that high water content sludge, energy consumption be low, moisture content is low after dehydration
Based on the sewage sludge dehydration device that oxidation electro-osmosis mechanism filter-pressing is collaborative.
The technical solution of the present invention is to provide the sewage collaborative based on oxidation electro-osmosis mechanism filter-pressing of a kind of following structure
Sludge dehydration device, including spiral filter-pressing device, oxidation cylinder and electro-osmosis squeezing dehydration device, described spiral press filtration dress
The front end put is provided with sewage sludge import, and the rear end of spiral filter-pressing device is connected with oxidation cylinder, described oxidation cylinder and institute
State electro-osmosis squeezing dehydration device to be connected；
Described electro-osmosis squeezing dehydration device includes electro-osmosis extruding container, positive plate, minus plate and hydraulic system, described
Positive plate and minus plate be arranged on electro-osmosis extruding container in, described electro-osmosis squeezing dehydration device complete electro-osmosis take off
After water, the moisture percentage in sewage sludge of positive plate is low, and electroosmotic dewatering effect is deteriorated, then stop electroosmotic dewatering, strengthen positive plate and
Pressure between minus plate, it is achieved super-pressure machinery filter-press dehydration so that between two-plate, moisture content is uniform, reduces dirt further
The moisture content of mud；Described hydraulic system is connected with described positive plate, to drive positive plate to move, and described hydraulic system
Including hydraulic jack and high-low pressure adjusting means, regulate the hydraulic jack pressure to positive plate by high-low pressure adjusting means, with
Adapt to the different water smokings.
Use above structure, the present invention compared with prior art, have the advantage that by gravity dehydration, spiral be dehydrated and
Oxidation stage, discharges mud internal moisture and is converted into Free water, prepares for the dehydration of follow-up high mass dryness fraction；Then enter back into
In the electroosmotic dewatering stage, by using mechanism filter-pressing to combine with electro-osmosis, increase battery lead plate and mud closeness of contact, make
Resistance reduces, and electric current increases, to promote dehydrating effect；The present invention can directly process high water content sludge, and various ways is worked in coordination with
Dewatering type greatly reduce the energy consumption of dehydration, processed by the invention after moisture percentage in sewage sludge low.
As improvement, described high-low pressure adjusting means include 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, described
One-way throttle valve I, one-way throttle valve II are connected with oil inlet and outlet and the solenoid directional control valve I of hydraulic jack respectively, described elder generation
Conduction overflow valve is connected with solenoid directional control valve I and solenoid directional control valve II, described solenoid directional control valve II and low-pressure direct dynamic formula overflow
Valve, high voltage straight moving overflow valve connect, and described low pressure direct-acting overflow valve, high voltage straight moving overflow valve pass through electromagnetic switch
Valve II adjustable hydraulic pump outlet pressure.
As improvement, described spiral filter-pressing device includes spiral cylinder, helical axis and helical blade, described helical axis and
Helical blade is installed in spiral cylinder, and described helical blade is arranged on helical axis, arranges backboard position on helical axis
In the exit of spiral cylinder, described backboard is installed on helical axis by spring.Improve spiral by the pressure of backboard to take off
The effect of water.
As improvement, adding derivant and Compositional type flocculant in spiral filter-pressing device, ozone gas is entered by gas pipeline
Enter the hollow space of the helical axis of spiral dewatering device, enter in spiral cylinder, under helical blade and helical axis stir,
Ozone, derivant, Compositional type flocculant fully contact with sewage sludge, and under derivant effect, mud is entered by ozone
Row oxidation, destroys the flocculation structure of mud, discharges internal water, become readily removed Free water.By adding medicament
Mode, it is possible to promote the precipitation of internal water.
As improvement, described helical axis is that reducing is arranged, and its diameter of axle becomes big from front to back, and described helical blade is for becoming spiral shell
Away from setting, its varying pitch diminishes from front to back, and mud is extruded by helical blade with the space reduction of spiral cylinder.
As improvement, described helical axis passes spiral cylinder, and extends into oxidation cylinder, at the spiral stretching into oxidation cylinder
Gas supervisor is set on axle, described gas supervisor arranges gas service pipe.The rotation of helical axis can drive oxidation cylinder
Interior gas supervisor and gas service pipe rotate such that it is able to promote the ozone oxidation to the sewage sludge of entrance oxidation cylinder, have
Help the internal water conversion to Free water.
As improvement, cavernous body is set below described minus plate, to absorb the moisture of accumulation on minus plate, and by conveying
Cavernous body is transferred out by pressurizing unit, gets rid of the moisture that cavernous body (18) absorbs, formed the cavernous body (18) that is dried with
Being beneficial to function of circular water absorption next time, extrude it in course of conveying, in the process, conveying pressurizing unit is by another sponge
Body is placed in below minus plate.In this way, the outflow of minus plate moisture can be accelerated, and carried out by automatic mechanism
Change and extruding, and recycle.
As improvement, described conveying pressurizing unit includes that two the first cylinders, two described the first cylinders are provided with conveying
Band, described conveyer belt is positioned at the underface of minus plate, arranges two cavernous bodies on described conveyer belt, and at least in one
Individual first cylinder be provided above second tin roller, the gap of this first cylinder and described second tin roller is less than the thickness of cavernous body.
In this way, it is possible to use transferring roller cavernous body is done extruding action, beneficially two cavernous bodies exchange water suction and
Extruding.
As improvement, described electro-osmosis squeezing dehydration device also includes dc source, filter cloth, shrouding and insulated ring, described
Positive plate be multistage grid structure, be arranged on electro-osmosis extruding container upper end, described minus plate is slab construction, if
Putting the lower end at electro-osmosis extruding container, described dc source both positive and negative polarity electrically connects with positive plate and minus plate respectively.
As improvement, while electroosmotic dewatering, hydraulic system is exerted by the pressure between positive plate and minus plate, protects
Hold battery lead plate to be in close contact with mud, reduce mud resistance to improve electric current；Along with the carrying out of electro-osmosis, the mud of positive plate
Moisture content is low, sludge drying, then stop electroosmotic dewatering, and strengthen the pressure between positive plate and minus plate, it is achieved superelevation
Press mechanical pressing filter-press dehydration so that between two-plate, moisture content is uniform.
Accompanying drawing explanation
Fig. 1 is that the present invention is dehydrated the structural representation of device based on the sewage sludge that oxidation electro-osmosis mechanism filter-pressing is collaborative；
Fig. 2 is the FB(flow block) that the present invention works；
As it can be seen, 1, oxidation cylinder, 2, sewage sludge import, 3, electro-osmosis extruding container, 4, positive plate, 5,
Minus plate, 6, dc source, 7, filter cloth, 8, shrouding, 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 cylinder, 20, conveyer belt, 21, second tin roller, 22, hydraulic jack, 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 dynamic formula overflow
Valve, 28, high voltage straight moving overflow valve, 29, pilot operated compound relief valve, 30, hydraulic pump, 31, gate, 32, material inlet valve,
33, controller, 34, gas purifier, 35, air generator, 36, ozone generator.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The present invention contains any replacement, amendment, equivalent method and scheme made in the spirit and scope of the present invention.In order to
Make the public that the present invention to be had to understand thoroughly, in present invention below preferred embodiment, concrete details is described in detail, and right
The description not having these details for those skilled in the art can also understand the present invention completely.Additionally, in the accompanying drawing of the present invention
For the needs illustrated, the most accurately it is not drawn to scale, is explained at this.
As it is shown in figure 1, a kind of collaborative based on the oxidation electro-osmosis mechanism filter-pressing sewage sludge dehydration device of the present invention, including
Spiral filter-pressing device, oxidation cylinder 1 and electro-osmosis squeezing dehydration device, the front end of described spiral filter-pressing device is provided with sewage
Mud import 2, the rear end of spiral filter-pressing device is connected with oxidation cylinder 1, and described oxidation cylinder 1 squeezes with described electro-osmosis
Press-dehydrating device is connected；
Sewage sludge enters the front end of spiral filter-pressing device from the sewage sludge import of spiral filter-pressing device, at the weight of sewage sludge
Under power effect, it is achieved gravity dehydration；Under the promotion of spiral filter-pressing device, sewage sludge forward impelling, constantly remove moisture removal,
Sludge volume reduces simultaneously；Sewage sludge exports from spiral filter-pressing device, enters oxidation cylinder, is passed through in oxidation cylinder
Ozone, described sewage sludge and ozone hybrid reaction, the internal water in sewage sludge is released and becomes Free water；Sewage
Mud exports from oxidation cylinder, enters into electro-osmosis squeezing dehydration device and carries out electroosmotic dewatering, under electric field force effect,
Mud granule moves to positive plate, and hydrone moves to minus plate, and applies the pressure between positive plate and minus plate so that
The moisture that electric osmose appears flows out from electro-osmosis squeezing dehydration device.
Described electro-osmosis squeezing dehydration device includes electro-osmosis extruding container 3, positive plate 4 and minus plate 5, described sun
Pole plate 4 and minus plate 5 are arranged in electro-osmosis extruding container 3, complete electro-osmosis at described electro-osmosis squeezing dehydration device
After dehydration, the moisture percentage in sewage sludge of positive plate is low, and electroosmotic dewatering effect is deteriorated, then stop electroosmotic dewatering, strengthens positive plate
Pressure between 4 and minus plate 5, it is achieved super-pressure machinery filter-press dehydration so that between two-plate, moisture content is uniform, further
Reduce the moisture content of mud.During described super-pressure mechanism filter-pressing, the pressure suffered by mud is 3-5MPa.
Described electro-osmosis squeezing dehydration device also includes dc source 6, filter cloth 7, shrouding 8 and insulated ring 9, described sun
Pole plate 4 is multistage grid structure, is arranged on the upper end of electro-osmosis extruding container 3, and described minus plate 5 is slab construction,
Being arranged on the lower end of electro-osmosis extruding container 3, described dc source 6 both positive and negative polarity is electric with positive plate 4 and minus plate 5 respectively
Connect.Being respectively provided with multiple apopore on described positive plate 4 and minus plate 5, described filter cloth 7 is laid in positive plate respectively
With on minus plate.Described shrouding 8 is arranged on positive plate 4, and arranges the apopore phase of drainpipe 10 and positive plate 4
Connection, uses electromagnetic switch 10.1 to control the opening and closing of drainpipe 10.Container 3, negative electrode is extruded with electro-osmosis at positive plate 4
Between plate 5 and electro-osmosis extruding container 3, insulated ring 9 is set.Positive plate uses sandwich construction so that when the superiors' positive plate
During sludge drying, below which floor mud the most still have certain humidity so that the resistance increase of mud is slowed down, and current reduction slows down,
Improve dehydrating effect, alleviate current electro-osmosis mud anode layer mummification and bring the dehydrating effect variation temperature difference.
Described spiral filter-pressing device includes spiral cylinder 12, helical axis 13 and helical blade 14, described helical axis 13
Being installed in spiral cylinder 12 with helical blade 14, described helical blade 14 is arranged on helical axis 13, at helical axis
Arranging backboard 15 on 13 and be positioned at the exit of spiral cylinder, described backboard 15 is installed on helical axis 13 by spring.
Adding derivant and Compositional type flocculant in spiral filter-pressing device, ozone gas enters spiral by gas pipeline and is dehydrated
The hollow space of the helical axis of device, enters in spiral cylinder, under helical blade and helical axis stir, and ozone, induction
Agent, Compositional type flocculant fully contact with sewage sludge, and under derivant effect, mud is aoxidized by ozone, broken
The flocculation structure of bad mud, discharges internal water, becomes readily removed Free water.By the way of adding medicament, it is possible to
Promote the precipitation of internal water.Described derivant and Compositional type flocculant are put into by adding of agent mouth 11, described adding of agent
Mouth is positioned at the front end of spiral cylinder 12.
Described helical axis 13 is arranged for reducing, and its diameter of axle becomes big from front to back, and described helical blade 14 sets for varying pitch
Putting, its varying pitch diminishes from front to back, and mud is extruded by helical blade 14 with the space reduction of spiral cylinder 12.As
Shown in Fig. 2, described helical axis 13 and helical blade 14 are two sets, and two helical axis parallel arranged, helical blade 14 is mutual
Helical blade 14 in staggered embedding, i.e. one of them helical axis 13 is embedded into the helical-blade of another one helical axis 13
In groove between sheet 14.
Described helical axis 13 passes spiral cylinder 12, and extends into oxidation cylinder 1, at the spiral stretching into oxidation cylinder 1
Gas supervisor 16 is set on axle 13, described gas supervisor 16 arranges gas service pipe 17.The rotational of helical axis 13
Gas supervisor 16 and gas service pipe 17 in enough band dynamic oxidation cylinders rotate such that it is able to promote that ozone is to entering oxidation cylinder
The oxidation of sewage sludge, contribute to the internal water conversion to Free water.
Cavernous body 18 is set below described minus plate 5, to absorb the moisture of accumulation on minus plate 5, and is extruded by conveying
Cavernous body 18 is transferred out by device, extrudes it in course of conveying, and in the process, conveying pressurizing unit will be another
One cavernous body 18 is placed in below minus plate 5.In this way, the outflow of minus plate moisture can be accelerated.
Described conveying pressurizing unit includes that two the first cylinders 19, two described the first cylinders 19 are provided with conveyer belt 20,
Described conveyer belt 20 is positioned at the underface of minus plate 5, arranges two cavernous bodies 18, at least exist on described conveyer belt 20
One of them the first cylinder 19 be provided above second tin roller 21, the gap of this first cylinder 19 and described second tin roller 21
Thickness less than cavernous body 18.
Described electro-osmosis squeezing dehydration device also includes that hydraulic system, described hydraulic system are connected with described positive plate 4,
To drive positive plate 4 to move, described hydraulic system includes hydraulic jack 22 and high-low pressure adjusting means, passes through high-low pressure
The adjusting means regulation hydraulic jack pressure to positive plate, to adapt to the different water smokings.Described high-low pressure adjusting means
Including 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 dynamic formula
Overflow valve 27, high voltage straight moving overflow valve 28, pilot operated compound relief valve 29 and hydraulic pump 30, described one-way throttle valve I 23,
One-way throttle valve II 24 is connected with oil inlet and outlet and the solenoid directional control valve I 25 of hydraulic jack 22 respectively, and described pilot-operated type overflows
Stream valve 29 is connected with solenoid directional control valve I 25 and solenoid directional control valve II 26, described solenoid directional control valve II 26 and low-pressure direct dynamic formula
Overflow valve 27, high voltage straight moving overflow valve 28 connect, described low pressure direct-acting overflow valve 27, high voltage straight moving overflow valve
28 pass through solenoid directional control valve II 26 adjustable hydraulic pump 20 outlet pressure.
While electroosmotic dewatering, hydraulic system is exerted by the pressure between positive plate 4 and minus plate 5, holding electrode
Plate is in close contact with mud, reduces mud resistance to improve electric current；Along with the carrying out of electro-osmosis, the mud of positive plate 4 is aqueous
Rate is low, sludge drying, then stop electroosmotic dewatering, and strengthen the pressure between positive plate 4 and minus plate 5, it is achieved superelevation
Press mechanical pressing filter-press dehydration so that between two-plate, moisture content is uniform.
The exit of oxidation cylinder 1 is provided with gate 31, and the import department at described electro-osmosis squeezing dehydration device is provided with import
Valve 32.Described controller 33 respectively with drive the motor of the first cylinder, electromagnetic switch, flashboard, material inlet valve, electricity
Magnet valve, overflow valve etc. are connected, by controller control.Connect on described oxidation cylinder 1 and have gas purifier 34.Spiral shell
Rotation filter-pressing device also includes air generator 35 and ozone generator 36, described air generator 35 and ozone generator 36
It is connected with the front end of spiral-tube by pipeline, and on pipeline, is respectively provided with regulation valve.
Dehydration device based on the above present invention, can form following dewatering, comprise the following steps:
1. the primary gravity dehydration stage: the sewage sludge of high-moisture percentage enters the front end of spiral dewatering device, at sewage sludge
Under Action of Gravity Field, it is achieved gravity dehydration；
2. the spiral water smoking: under helical blade promotes, the sewage sludge forward impelling in spiral dewatering device, constantly go
Moisture removal, sludge volume reduces simultaneously；
3. oxidation stage: the sewage sludge after 2. step processes exports from spiral dewatering device, enters oxidation cylinder,
Being passed through ozone, described sewage sludge and ozone hybrid reaction in oxidation cylinder, the internal water in sewage sludge is released into
For Free water, it is beneficial to be dehydrated further；
4. the electro-osmosis mechanism filter-pressing coupling water smoking: the sewage sludge after 3. step processes exports from oxidation cylinder, enters
Entering and carry out electroosmotic dewatering to electro-osmosis cylinder, under electric field force effect, mud granule moves to positive plate, and hydrone is to the moon
Pole plate moves, and applies the pressure between positive plate and minus plate so that the moisture that electric osmose appears flows out from electro-osmosis cylinder.
Described dewatering also includes: 5. super-pressure machinery filter-press dehydration stage: after 4. step processes, the dirt of positive plate
Mud moisture content is low, sludge drying, then stop electroosmotic dewatering, and strengthen the pressure between positive plate and minus plate, it is achieved super
High-pressure machinery filter-press dehydration so that between two-plate, moisture content is uniform.Dehydration is coupled through mechanism filter-pressing electro-osmosis after a while
After, positive plate moisture percentage in sewage sludge is the lowest, and resistance sharply increases, and electric current reduces, and causes electroosmotic dewatering effect to be deteriorated, logical
Cross the dehydration of employing super-pressure, reduce further the moisture content of mud.In the present embodiment, relate to " moisture content is uniform " not
Absolute is uniform, and refers to that relative previous stage becomes evenly.
Step 4. in, mechanism filter-pressing is exerted by the pressure between positive plate and minus plate, hydraulic system provide, described liquid
The pressure that 4. positive plate is applied by pressure system in step is 0.05-0.5MPa.In the middle of dehydration is carried out, owing to sewage quantity reduces,
So needing suitably to increase pressure, being in close contact with mud with holding electrode plate, reducing mud resistance to improve electric current.
Described dewatering uses alternately pressure swing type dehydration mode, complete step 5. after, between two-plate, moisture content uniformly becomes
4. and 5. uniformly, the most sequentially entering step, circulation is until reaching to expect moisture percentage in sewage sludge requirement and so forth.Due to
Have employed alternately pressure swing type dehydration mode, 5. step makes positive plate mud by moisturizing again, the dewatered sludge started become wet
Mud, can be restored to again electro-osmosis and mechanism filter-pressing coupling water smoking.Alternately pressure swing type dehydration mode refers to that coupling is de-
What water and super-pressure were dehydrated replaces, and the two required pressure is different, therefore referred to as transformation.
The pressure of described super-pressure machinery filter-press dehydration is also provided by hydraulic system, and its pressure is 3-5MPa, is adjusted by high-low pressure
Regulating device realizes hydraulic system from low pressure toward the switching of high pressure.
Below only preferred embodiment of the present invention is described, but is not to be construed as limitations on claims.The present invention
Being not only limited to above example, its concrete structure allows to change.In a word, all protections in independent claims of the present invention
In the range of the various changes made the most within the scope of the present invention.
Claims (10)
1. one kind is dehydrated device based on the sewage sludge that oxidation electro-osmosis mechanism filter-pressing is collaborative, it is characterised in that: include spiral
Filter-pressing device, oxidation cylinder (1) and electro-osmosis squeezing dehydration device, the front end of described spiral filter-pressing device is provided with sewage
Mud import (2), the rear end of spiral filter-pressing device is connected with oxidation cylinder (1), and described oxidation cylinder (1) is with described
Electro-osmosis squeezing dehydration device is connected；
Described electro-osmosis squeezing dehydration device include electro-osmosis extruding container (3), positive plate (4), minus plate (5) and
Hydraulic system, described positive plate (4) and minus plate (5) are arranged in electro-osmosis extruding container (3), described
After electro-osmosis squeezing dehydration device completes electroosmotic dewatering, the moisture percentage in sewage sludge of positive plate is low, and electroosmotic dewatering effect is deteriorated,
Then stop electroosmotic dewatering, strengthen the pressure between positive plate (4) and minus plate (5), it is achieved super-pressure mechanism filter-pressing takes off
Water so that between two-plate, moisture content is uniform, reduces the moisture content of mud further；
Described hydraulic system is connected with described positive plate (4), to drive positive plate (4) to move, and described hydraulic pressure system
System includes hydraulic jack (22) and high-low pressure adjusting means, by high-low pressure adjusting means regulation hydraulic jack to positive plate
Pressure, to adapt to the different water smokings.
The sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing the most according to claim 1, it is special
Levy and be: described high-low pressure adjusting means includes one-way throttle valve I (23), one-way throttle valve II (24), electromagnetic switch
Valve I (25), solenoid directional control valve II (26), low pressure direct-acting overflow valve (27), high voltage straight moving overflow valve (28), elder generation
Conduction overflow valve (29) and hydraulic pump (30), described one-way throttle valve I (23), one-way throttle valve II (24) are distinguished
Be connected with oil inlet and outlet and the solenoid directional control valve I (25) of hydraulic jack (22), described pilot operated compound relief valve (29) with
Solenoid directional control valve I (25) and solenoid directional control valve II (26) connect, described solenoid directional control valve II (26) and low pressure direct acting
Formula overflow valve (27), high voltage straight moving overflow valve (28) connect, described low pressure direct-acting overflow valve (27), high straightening
Dynamic formula overflow valve (28) passes through solenoid directional control valve II (26) adjustable hydraulic pump (20) outlet pressure.
The sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing the most according to claim 1, it is special
Levy and be: described spiral filter-pressing device includes spiral cylinder (12), helical axis (13) and helical blade (14), described
Helical axis (13) and in helical blade (14) is installed on spiral cylinder (12), described helical blade (14) arrangement
On helical axis (13), helical axis (13) arranges backboard (15) and is positioned at the exit of spiral cylinder, described
Backboard (15) is installed on helical axis (13) by spring.
4. according to the sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing described in claim 1 or 3,
It is characterized in that: adding derivant and Compositional type flocculant in spiral filter-pressing device, ozone gas is entered by gas pipeline
The hollow space of the helical axis (13) of spiral dewatering device, enters in spiral cylinder (12), in helical blade (14)
And under helical axis stirring, ozone, derivant, Compositional type flocculant fully contact with sewage sludge, in derivant effect
Under, mud is aoxidized by ozone, destroys the flocculation structure of mud, discharges internal water, become readily removed Free water.
The sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing the most according to claim 3, it is special
Levy and be: described helical axis (13) is that reducing is arranged, and its diameter of axle becomes big from front to back, described helical blade (14)
Arranging for varying pitch, its varying pitch diminishes from front to back, and it is right that helical blade (14) and the space of spiral cylinder (12) reduce
Mud extrudes.
The sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing the most according to claim 3, it is special
Levy and be: described helical axis (13) passes spiral cylinder (12), and extends into oxidation cylinder (1), is stretching into oxidation
Gas supervisor (16) is set on the helical axis (13) of cylinder (1), described gas supervisor (16) arranges gas and props up
Pipe (17).
The sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing the most according to claim 2, it is special
Levy and be: cavernous body (18) is set in described minus plate (5) lower section, to absorb the moisture of the upper accumulation of minus plate (5),
And by conveying pressurizing unit, cavernous body (18) is transferred out, get rid of the moisture that cavernous body (18) absorbs, formed and be dried
Cavernous body (18) be beneficial to next time function of circular water absorption, in course of conveying, it is extruded, in the process, conveying squeeze
Another cavernous body (18) is placed in minus plate (5) lower section by pressure device.
The sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing the most according to claim 7, it is special
Levy and be: described conveying pressurizing unit includes two the first cylinders (19), and two described the first cylinders (19) set
Conveyer belt (20), described conveyer belt (20) is had to be positioned at the underface of minus plate (5), on described conveyer belt (20)
Two cavernous bodies (18) are set, at least in first cylinder (19) be provided above second tin roller (21), this is years old
The gap of one cylinder (19) and described second tin roller (21) is less than the thickness of cavernous body (18).
The sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing the most according to claim 2, it is special
Levy and be: described electro-osmosis squeezing dehydration device also includes dc source (6), filter cloth (7), shrouding (8) and insulation
Circle (9), described positive plate (4) is multistage grid structure, is arranged on the upper end of electro-osmosis extruding container (3), described
Minus plate (5) be slab construction, be arranged on electro-osmosis extruding container (3) lower end, described dc source (6)
Both positive and negative polarity electrically connects with positive plate (4) and minus plate (5) respectively.
The sewage sludge dehydration device collaborative based on oxidation electro-osmosis mechanism filter-pressing the most according to claim 9, it is special
Levying and be: while electroosmotic dewatering, hydraulic system is exerted by the pressure between positive plate (4) and minus plate (5),
Holding electrode plate is in close contact with mud, reduces mud resistance to improve electric current；Along with the carrying out of electro-osmosis, positive plate (4)
Moisture percentage in sewage sludge low, sludge drying, then stop electroosmotic dewatering, and strengthen between positive plate (4) and minus plate (5)
Pressure, it is achieved super-pressure machinery filter-press dehydration so that between two-plate, moisture content is uniform.
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| CN106396309A (en) * | 2016-11-09 | 2017-02-15 | 河南工程学院 | Transverse electroosmosis sludge in-depth dewatering experiment device and experiment method thereof |
| CN106865943A (en) * | 2017-02-23 | 2017-06-20 | 扬州博越生态技术有限公司 | A kind of sludge high-drying integrating device |
| CN107381997A (en) * | 2017-09-19 | 2017-11-24 | 饶宾期 | Electro-osmosis press filtration synergistic mud dewatering method |
| CN107555754A (en) * | 2017-09-19 | 2018-01-09 | 饶宾期 | Energy-saving electrical permeates sludge high-drying degree dewatering |
| CN107686223A (en) * | 2017-10-20 | 2018-02-13 | 上海同臣环保有限公司 | Electrochemistry deep dehydration device for sludge and deep dehydration method for sludge |
| CN108245952A (en) * | 2018-04-19 | 2018-07-06 | 刘胜军 | Sludge drying filter press |
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| CN106396309A (en) * | 2016-11-09 | 2017-02-15 | 河南工程学院 | Transverse electroosmosis sludge in-depth dewatering experiment device and experiment method thereof |
| CN106396309B (en) * | 2016-11-09 | 2023-02-24 | 河南工程学院 | Transverse electroosmosis sludge deep dehydration experimental device and experimental method thereof |
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| CN107381997B (en) * | 2017-09-19 | 2020-10-13 | 海河环境技术(杭州)有限公司 | Electroosmosis filter pressing and sludge dewatering cooperated method |
| CN107555754A (en) * | 2017-09-19 | 2018-01-09 | 饶宾期 | Energy-saving electrical permeates sludge high-drying degree dewatering |
| CN107555754B (en) * | 2017-09-19 | 2020-10-23 | 中国计量大学 | Energy-saving electroosmosis sludge high-dryness dehydration method |
| CN107381997A (en) * | 2017-09-19 | 2017-11-24 | 饶宾期 | Electro-osmosis press filtration synergistic mud dewatering method |
| CN107686223A (en) * | 2017-10-20 | 2018-02-13 | 上海同臣环保有限公司 | Electrochemistry deep dehydration device for sludge and deep dehydration method for sludge |
| CN108245952A (en) * | 2018-04-19 | 2018-07-06 | 刘胜军 | Sludge drying filter press |
| CN109354364A (en) * | 2018-12-17 | 2019-02-19 | 新兴县润境环保科技有限公司 | A kind of pollutant solid-liquid processing machine |
| CN109824235A (en) * | 2019-04-07 | 2019-05-31 | 饶宾期 | Ultrasonic wave, electro-osmosis couple sludge dehydration device with mechanism filter-pressing |
| CN109824235B (en) * | 2019-04-07 | 2023-11-17 | 浙江遂昌汇金有色金属有限公司 | Ultrasonic wave, electroosmosis and mechanical filter pressing coupling sludge dewatering device |
| CN110657137A (en) * | 2019-10-25 | 2020-01-07 | 上海同臣环保有限公司 | Oil leakage detection method for hydraulic system of oil cylinder squeezer |
| CN113006179A (en) * | 2021-02-25 | 2021-06-22 | 周星茹 | Environment-friendly sludge treatment equipment for hydraulic engineering |
| CN113277704A (en) * | 2021-06-01 | 2021-08-20 | 潘臻 | Continuous plasma blasting dewatering system |
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