CN105819636A - High-dryness sewage sludge treatment system - Google Patents

High-dryness sewage sludge treatment system Download PDF

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Publication number
CN105819636A
CN105819636A CN201511015306.5A CN201511015306A CN105819636A CN 105819636 A CN105819636 A CN 105819636A CN 201511015306 A CN201511015306 A CN 201511015306A CN 105819636 A CN105819636 A CN 105819636A
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cylinder
helical axis
spiral
sewage sludge
treatment system
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CN105819636B (en
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饶宾期
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China Jiliang University
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饶宾期
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/006Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/06Treatment of sludge; Devices therefor by oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/125Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/06Sludge reduction, e.g. by lysis

Abstract

The invention discloses a high-dryness sewage sludge treatment system, comprising an active gas generator (1), a spiral filtering apparatus (2), an oxidation drum (3) and an ultrahigh-voltage electro-osmosis dehydration apparatus (4), wherein the spiral filtering apparatus (2) comprises a spiral shaft (2.1), spiral blades (2.2) and a spiral drum (2.3); the spiral shaft (2.1) is installed in the spiral drum (2.3); the spiral blades (2.2) are arranged on the spiral shaft (2.1) and arrayed between the spiral shaft (2.1) and the inner wall of the spiral drum; the spiral shaft (2.1) is hollow; an end inlet of the spiral shaft is communicated with the active gas generator; the wall of the spiral shaft is provided with a vent allowing active gas to enter; the tail end of the spiral drum (2.3) is connected with the oxidation drum (3); and an outlet of the oxidation drum (3) is communicated with the ultrahigh-voltage electro-osmosis dehydration apparatus (4). The high-dryness sewage sludge treatment system provided by the invention has a wide application scope and low energy consumption, is beneficial for sludge reduction and enables treated sludge to have low water content.

Description

High mass dryness fraction sewage sludge treatment system
Technical field
The present invention relates to sewage sludge process field, a kind of high mass dryness fraction sewage sludge treatment system.
Background technology
Ending 2015, China's sludge quantity reaches 40,000,000 tons (80% moisture content), it is contemplated that be up to 60,000,000 tons to the year two thousand twenty, and the hugest mud, as do not properly settled, will bring significant impact for environment, and also become the one of people's productive life and bear greatly.Owing to High water cut, the dehydration of mud are difficult, rich in corruption organic, easy, product stench;Containing the pollutant such as pathogenic microorganism and heavy metal so that disposal and the process of mud bother very much.
According to China " urban wastewater treatment firm specific resistance to filtration and pollution prevention technique policy ", city sludge processes disposes stabilisation to be followed, minimizing, innoxious, the principle of resource, and moisture percentage in sewage sludge requiring, dropping to less than 60% does final disposal again.Particularly stricter by country's " 13 " planning requirement.Current specific resistance to filtration technology path is numerous, bake bricks including anaerobic digestion, pyrohydrolysis+anaerobic digestion, biological compost, mud, be dehydrated+fill, heat drying+burning, cement collaborative burning, carbonization etc., moisture content height is the where the shoe pinches of Treatment of Sludge, and sludge reduction is the basis of other " four change ".No matter being which kind of disposal options, reduce moisture percentage in sewage sludge, mud carries out minimizing processing is all maximum, most basic premise, and deeply dehydrating sludge is the key that mud subsequent treatment is disposed, and is also one of maximum difficult problem.
Owing to moisture and the common Sandy Soil Moisture nature difference of mud are bigger, the moisture contained in mud includes Interstitial Water (70%), capillary water (20%), absorption water (7%), internal water (3%), Interstitial Water not with solid directly in conjunction with, more easily separated thereby through mechanical means, and capillary water, surface adsorption water, internal water are irreducible water, it is very difficult to remove by conventional mechanical means.So, it is generally required to use additive method early stage to give pretreatment.
Current conventional mechanical dehydration mode and equipment mainly have belt filtering means dehydration, centrifuge dehydration, filter press dehydration three major types.For municipal sludge, the filter cake moisture content after band filter, folded spiral shell dewaterer, centrifuge dewatering is about at 75%-80%, and the moisture percentage in sewage sludge of barrier film filter press dehydration is typically about 60%.Supertension elasticity squeezer is that a kind of pressure is bigger, and filtering equipment in hgher efficiency and solid-liquid separating equipment, whole process is broadly divided into charging, and--elasticity squeezes--connecing liquid--Four processes such as discharging.This equipment pressure is directly from the pressure of hydraulic jack, and for directly squeezing, it is 1.0 ~ 1.5h that squeeze pressure can reach 5-7MPa mono-batch working cycle, and work efficiency is 3-4 times of diaphragm filter press, and dehydrated sludge moisture content can reach about 50%.But there is the problems such as energy consumption is big, equipment cost is high, the squeezing spring frequent replacing of needs.
Use the above-mentioned early stage that typically generally requires to add substantial amounts of ferric chloride and Calx, the amount of over dry mud is to increase in fact, violates the minimizing principle of mud;The medicament additionally added all brings adverse effect for the follow-up burning of mud, recycling etc., is typically only used for landfill.So, using the processing mode adding medicament deep dehydration+landfill is an emergent plan, the most improper as long-term plan.In view of this, it is necessary to providing a kind of new thinking to dispose to the process carrying out mud, the recycling for mud lays the foundation.
Currently, mud carrying out electroosmotic dewatering and there is also the problems such as some problems, mainly equipment galvano-cautery are serious, maintenance capacity is excessive, this technology exists and utilizes electric energy shortcoming, the most high reason of dewatering efficiency such as energy consumption is excessive in addition, there is presently no and is used widely.
Summary of the invention
In view of this, the present invention is directed to above-mentioned prior art exist dehydrated sludge moisture content too high, consumable accessory is many, energy consumption is big, and the problem being unfavorable for minimizing, it is provided that a kind of applied widely, energy consumption is low, be beneficial to sludge reduction, high mass dryness fraction sewage sludge treatment system that moisture percentage in sewage sludge is low.
The technical solution of the present invention is, the high mass dryness fraction sewage sludge treatment system of a kind of following structure is provided, including reactive gas generator, helix filter device, oxidation cylinder and extra-high voltage permeating and dewatering device, described helix filter device includes helical axis, helical blade and spiral cylinder, described helical axis is installed in spiral cylinder, described helical blade is arranged on helical axis and is arranged between helical axis and spiral cylinder inwall, described helical axis is hollow, its end inlet is connected with reactive gas generator, and on spiral axial wall, it is provided with the passage being passed through for active gases, the end of described spiral cylinder is connected with oxidation cylinder, described helical axis extends in described oxidation cylinder, the outlet of described oxidation cylinder is connected with extra-high voltage permeating and dewatering device.
Using above structure, the present invention compared with prior art, has the advantage that mud is aoxidized by (1) by active gases, destroy the cell wall of mud, discharge the internal water of mud so that internal water becomes feasible to the Interstitial Water filtered, the high mass dryness fraction dehydration of mud can be realized;(2) using active gases oxidation, it is not necessary to add such as the medicaments such as ferric chloride, Calx, flocculant, can save medicament expense use, follow-up disposal and recycling simultaneously for mud produce advantageous effects;(3) using helix filter device due to leading portion equipment, the moisture percentage in sewage sludge scope of application is wider, and moisture percentage in sewage sludge can fluctuate between 80%-99%;(4) active gases, electro-osmosis and the process technique of high-pressure compressing coupling are used, active gases destroys the cell wall of mud, discharge internal water, electro-osmosis can effectively process absorption water, capillary water and Interstitial Water, and moisture can quickly be squeezed out by high-pressure compressing, this coupling processing technique can carry out good process to four kinds of moisture of mud so that exports as high mass dryness fraction mud.
As preferably, described extra-high voltage permeating and dewatering device includes supertension dewatering device and electro-osmosis mechanism, described electro-osmosis mechanism is installed in supertension dewatering device, after the sewage sludge of entrance extra-high voltage permeating and dewatering device separates out capillary water and absorption water under the effect of electro-osmosis mechanism, in supertension dewatering device, carry out supertension dehydration, obtain high mass dryness fraction mud.Extra-high voltage permeating and dewatering device is exactly supertension dewatering device and the coupling of electro-osmosis mechanism, it is achieved that electro-osmosis and the synergism of supertension dehydration, effectively for capillary water, absorption water and internal water, further increases mud mass dryness fraction.
As preferably, described spiral cylinder is provided with backboard at the connector of oxidation cylinder, described backboard props up described connector under the effect of flexible member, helical axis is provided with location-plate, described backboard is sheathed on helical axis, described flexible member one end is connected on location-plate, and the other end is connected on backboard.The back segment of helix filter device is extrusion dehydration, dehydration realizes active gases simultaneously to oxidation organic in mud, the internal water making mud is released, under the effect of elastic backboard, carry out further extruding filtering means dehydration, back of the body platen pressure is set between 0.1-0.6MPa, overcomes backboard pressure to enter into oxidation cylinder through dewatered sludge.
As preferably, the back segment of described helical axis is that reducing is arranged, and after certainly going to, its diameter of axle progressively becomes big;The back segment of described helical blade is distance changing mechanism, and after certainly going to, its blade pitgh progressively reduces.After the gravity dehydration of experience leading portion, owing to becoming greatly at the diameter of axle of back segment helical axis, the spacing of helical blade diminishes, the cavity that then helical axis, helical blade and spiral cylinder are formed the most progressively diminishes, feeding along with sewage sludge, it is also the most increasing by the pressure of helix filter device, contributes to being dehydrated further.
As preferably, helical axis part in extending into oxidation cylinder is provided with gas supervisor, and described gas supervisor is placed with gas service pipe, and described gas supervisor is connected with in helical axis, described gas supervisor is perpendicular to helical axis, and described oxidation cylinder is cylindrical shape.By gas supervisor and the setting of gas service pipe, active gases can enter gas supervisor and gas service pipe from helical axis, being easy to be sufficiently oxidized, simultaneously because helical axis can drive gas supervisor to rotate, oxidation cylinder is set to cylindrical shape can be with the mutual coordinated of design of gas supervisor.
As preferably, described supertension dewatering device includes high-pressure compressing cylinder, stripper plate, gripper shoe, high-voltage oil cylinder, filter cloth, discharge oil cylinder and supercharger, described stripper plate and gripper shoe are arranged in high-pressure compressing cylinder, described high-pressure compressing cylinder, stripper plate and gripper shoe composition filter pressing cavity, described stripper plate is connected with the piston rod of high-voltage oil cylinder, described gripper shoe is connected with the piston rod of discharge oil cylinder, described stripper plate and gripper shoe are provided with the hole distributed of supplying water, and it is covered with filter cloth respectively at stripper plate and gripper shoe, described supercharger is connected with high-voltage oil cylinder, with to high-voltage oil cylinder supercharging.
As preferably, described electro-osmosis mechanism includes DC source generator, positive plate and minus plate, the anode of DC source generator, negative electrode electrically connect with positive plate, minus plate respectively, described positive plate is fixed on stripper plate, described minus plate is fixing on the supporting plate, between positive plate and stripper plate, between minus plate and gripper shoe, it is provided with insulator, it is also equipped with insulator between positive plate, minus plate and high-pressure compressing cylinder, described positive plate and minus plate also offer the hole distributed of supplying water.
As preferably, the piston rod of described high-voltage oil cylinder being additionally provided with limit switch, described high-pressure compressing cylinder arranges one end of gripper shoe and is additionally provided with quick-opening device, and described quick-opening device is connected for opening soon with gripper shoe.In such manner, it is possible to make gripper shoe static and dynamically between switch over.
As preferably, described helical axis and helical blade are two sets, two helical axis parallel arranged, and helical blade intermeshes embedding, and the helical blade on one of them helical axis is embedded in the groove between the helical blade of another one helical axis.Two helical blades can clean mutually, is provided with filtration filter cloth inside spiral cylinder, filters filter cloth and is close to be fixed on the inwall of spiral cylinder, is 360 degree of layouts, and spiral cylinder offers multiple fluid bore supplying water and flowing out.
As preferably, the active gases that described reactive gas generator produces is ozone, and every gram of sludge suspension solid at least needs 30 milligrams of ozone, and in equipment, the response time was at 30-60 minute.Using ozone as active gases, and corresponding concentration limit 30mgO3/gMLSS is set, it is possible to realize fully oxidized.
Accompanying drawing explanation
Fig. 1 is the structural representation of high mass dryness fraction sewage sludge treatment system of the present invention;
Fig. 2 is double-stranded helix filter device;
Fig. 3 is the partial enlarged drawing of helix filter device;
Fig. 4 is the structural representation of helical axis driving means;
nullAs shown in the figure,1、Reactive gas generator,2、Helix filter device,2.1、Helical axis,2.2、Helical blade,2.3、Spiral cylinder,3、Oxidation cylinder,4、Extra-high voltage permeating and dewatering device,4.1、High-pressure compressing cylinder,4.2、Stripper plate,4.3、Gripper shoe,4.4、High-voltage oil cylinder,4.5、Discharge oil cylinder,4.6、Supercharger,4.7、DC source generator,4.8、Positive plate,4.9、Minus plate,4.10、Limit switch,4.11、Quick-opening device,5、Air vessel,6、Backboard,7、Flexible member,8、Location-plate,9、Gas is responsible for,10、Gas service pipe,11、Gas purifier,12、Motor,13、Drive gear,14、Driving gear,15、Tumbler gear,16、Driven gear.
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.Understand thoroughly to make the public that the present invention to be had, in present invention below preferred embodiment, concrete details is described in detail, and does not has the description of these details can also understand the present invention completely for a person skilled in the art.Additionally, for the needs illustrated in the accompanying drawing of the present invention, be not the most accurately drawn to scale, be explained at this.
nullAs shown in Figure 1,The one high mass dryness fraction sewage sludge treatment system of the present invention,Including reactive gas generator 1、Helix filter device 2、Oxidation cylinder 3 and extra-high voltage permeating and dewatering device 4,Described helix filter device 2 includes helical axis 2.1、Helical blade 2.2 and spiral cylinder 2.3,Described helical axis 2.1 is installed in spiral cylinder 2.3,Described helical blade 2.2 is arranged on helical axis 2.1 and is arranged between helical axis 2.1 and spiral cylinder 2.3 inwall,Described helical axis 2.1 is hollow,Its end inlet is connected with reactive gas generator 1,And on spiral axial wall, it is provided with the passage being passed through for active gases,The end of described spiral cylinder 2.3 is connected with oxidation cylinder 3,Described helical axis 2.1 extends in described oxidation cylinder 3,The outlet of described oxidation cylinder 3 is connected with extra-high voltage permeating and dewatering device 4.
Described sewage sludge treatment system also includes air vessel 5, described air vessel 5 also end inlet with helical axis 2.1 is connected, active gases in order to produce with reactive gas generator 1 mixes mutually, thus control to enter the active gases amount of system within the unit interval, and then regulation active gases concentration in sewage sludge.
The active gases that described reactive gas generator 1 produces is ozone, and every gram of sludge suspension solid at least needs 30 milligrams of ozone (30mgO3/gMLSS), and in equipment, the response time was at 30-60 minute.Using ozone as active gases, and arranging corresponding concentration limit 30mgO3/gMLSS, MLSS is mixed genetic-neural network.
The upper end of oxidation cylinder is provided with gas purifier 11, and the mixed gas after oxidation is finally discharged from gas purifier 11, discharges after reaching discharge standard.
Described extra-high voltage permeating and dewatering device 4 includes supertension dewatering device and electro-osmosis mechanism, described electro-osmosis mechanism is installed in supertension dewatering device, after the sewage sludge of entrance extra-high voltage permeating and dewatering device separates out capillary water and absorption water under the effect of electro-osmosis mechanism, in supertension dewatering device, carry out supertension dehydration, obtain high mass dryness fraction mud.Extra-high voltage permeating and dewatering device is exactly supertension dewatering device and the coupling of electro-osmosis mechanism, it is possible to realize electro-osmosis and the synergism of supertension dehydration.
Described spiral cylinder 2.3 is provided with backboard 6 at the connector of oxidation cylinder 3, described backboard 6 props up described connector under the effect of flexible member 7, helical axis 2.1 is provided with location-plate 8, described backboard 6 is sheathed on helical axis 2.1, described flexible member 7 one end is connected on location-plate 8, and the other end is connected on backboard 6.The back segment of helix filter device is extrusion dehydration, dehydration realizes active gases simultaneously to oxidation organic in mud, the internal water making mud is released, under the effect of elastic backboard, carry out further extruding filtering means dehydration, back of the body platen pressure is set between 0.1-0.6MPa, overcomes backboard pressure to enter into oxidation cylinder through dewatered sludge.
The back segment of described helical axis 2.1 is that reducing is arranged, and after certainly going to, its diameter of axle progressively becomes big;The back segment of described helical blade 2.2 is distance changing mechanism, and after certainly going to, its blade pitgh progressively reduces.After the gravity dehydration of experience leading portion, owing to becoming greatly at the diameter of axle of back segment helical axis, the spacing of helical blade diminishes, the cavity that then helical axis, helical blade and spiral cylinder are formed the most progressively diminishes, feeding along with sewage sludge, it is also the most increasing by the pressure of helix filter device, contributes to being dehydrated further.
Helical axis part in extending into oxidation cylinder 3 is provided with gas supervisor 9, it is placed with gas service pipe 10 on described gas supervisor 9, described gas supervisor 9 is connected in helical axis 2.1, and described gas supervisor 9 is perpendicular to helical axis 2.1, and described oxidation cylinder 3 is cylindrical shape.By gas supervisor and the setting of gas service pipe, active gases can enter gas supervisor and gas service pipe from helical axis, it is simple to is sufficiently oxidized.A wherein gas service pipe on gas supervisor is close to aoxidize on cylinder inboard wall, utilizes the gas service pipe being close to aoxidize cylinder to be got off by the sludge scraping being bonded on barrel.
nullDescribed supertension dewatering device includes high-pressure compressing cylinder 4.1、Stripper plate 4.2、Gripper shoe 4.3、High-voltage oil cylinder 4.4、Filter cloth、Discharge oil cylinder 4.5 and supercharger 4.6,Described stripper plate 4.2 and gripper shoe 4.3 are arranged in high-pressure compressing cylinder 4.1,Described high-pressure compressing cylinder 4.1、Stripper plate 4.2 and gripper shoe 4.3 form filter pressing cavity,Described stripper plate 4.2 is connected with the piston rod of high-voltage oil cylinder 4.4,Described gripper shoe 4.3 is connected with the piston rod of discharge oil cylinder 4.5,Described stripper plate 4.2 and gripper shoe 4.3 are provided with the hole distributed of supplying water,And it is covered with filter cloth respectively at stripper plate 4.2 and gripper shoe 4.3,Described supercharger 4.6 is connected with high-voltage oil cylinder 4.4,With to high-voltage oil cylinder 4.4 supercharging.
Described electro-osmosis mechanism includes DC source generator 4.7, positive plate 4.8 and minus plate 4.9, the anode of DC source generator 4.7, negative electrode respectively with positive plate 4.8, minus plate 4.9 electrically connects, described positive plate 4.8 is fixed on stripper plate 4.2, described minus plate 4.9 is fixed in gripper shoe 4.3, between positive plate 4.8 and stripper plate 4.2, it is provided with insulator between minus plate 4.9 and gripper shoe 4.3, positive plate 4.8, it is also equipped with insulator between minus plate 4.9 and high-pressure compressing cylinder 4.1, also the hole distributed of supplying water is offered on described positive plate 4.8 and minus plate 4.9.The voltage of electro-osmosis is 40-60V.
Being additionally provided with limit switch 4.10 on the piston rod of described high-voltage oil cylinder 4.4, described high-pressure compressing cylinder 4.1 arranges one end of gripper shoe and is additionally provided with quick-opening device 4.11, and described quick-opening device 4.11 is connected for opening soon with gripper shoe 4.3.
As shown in Figure 2, illustrate double-stranded helix filter device, described helical axis 2.1 and helical blade 2.2 are two sets, two helical axis 2.1 parallel arranged, helical blade 2.2 intermeshes embedding, and the helical blade 2.2 on one of them helical axis 2.1 is embedded in the groove between the helical blade 2.2 of another one helical axis 2.1.Two helical blades can clean mutually, is provided with filtration filter cloth inside spiral cylinder, filters filter cloth and is close to be fixed on the inwall of spiral cylinder, is 360 degree of layouts, and spiral cylinder offers multiple fluid bore supplying water and flowing out.When being arranged to double-spiral structure in Fig. 2, then the shape of spiral cylinder also matches with double-helical helical axis and helical blade.
As shown in Figure 3, illustrate the partial enlarged drawing of helix filter device, helical axis 2.1 is through spiral cylinder 2.3 and oxidation cylinder 3, helical axis 2.1 is arranged on the bearing laying respectively at spiral cylinder 2.3 and oxidation cylinder 3, the helical blade 2.2 arranged on whole helical axis 2.1 is the twi-tier blade of hollow, the hollow space of helical blade 2.2 is connected with helical axis 2.1, and it is provided with the hole corresponding with the passage offered on helical axis 2.1, whole helical axis 2.1 offers a fairly large number of pore, each helical blade 2.2 also offers multiple hole, active air is fully contacted with mud, increase mass transfer effect.
As shown in Figure 4, illustrating an embodiment of helical axis driving means, helical axis driving means is used for driving helical axis to rotate, and Fig. 4 structure is specifically designed to the helical axis driving means coordinated with double-spiral structure in Fig. 2.Described driving device for slow-run includes motor 12, drives gear 13, driving gear 14, tumbler gear 15, driven gear 16, and motor 12 is frequency conversion motor, and motor speed can be adjusted as required.Described driving gear 14 is equal with the driven gear teeth 16 wheel gear number, and described driving gear 13 and driven gear 16 are respectively used to drive two helical axis, i.e. engage with the gear on helical axis.Use this mechanism so that the rotating speed of two helical axis is consistent, and is unlikely to generation and interferes with each other phenomenon.
It should be noted that the rigid element contacted with active gases (ozone) in the present invention, the rustless steel that corrosion resistance is strong can be used, such as, ferrochrome effect containing 25%Cr is preferable, essentially without by ozone corrosion, extends the service life of the material of equipment.For in native system, relate to the position sealed, it is possible to use the rubber of corrosion resistant silicone rubber or interpolation corrosion resistant agent seals.
Processing method or the operation principle of the present invention are as follows:
1, the mud of moisture content high (95%-99%) enters from the charging aperture of spiral cylinder, described charging aperture is positioned at above the front end of spiral cylinder, enter in spiral cylinder by charging aperture, in the leading portion of helix filter device, sewage sludge is dehydrated under gravity, moisture passes through filter cloth, and mud granule is then stayed in spiral cylinder;
2, mud is pushed ahead under the promotion of helical blade, during advancing, sludge water content gradually removes, and at the back segment of helical blade except action of gravity, reduces along with helical blade spacing and helical axis diameter increases, mud is extruded, the most also extrusion dehydration;
3, at spiral cylinder end, mud carries out collecting coalescence and extrudes mutually, under backboard effect, mud is by certain back pressure, and now mud is pressed further by dehydration, when mud is cumulative, pressure exceedes backboard pressure, and backboard is opened, and mud is expressed in oxidation large cylinder;
4, during gravity dehydration and extrusion dehydration, active gases is passed through from helical axis, aoxidizes mud, and the cell in mud is carried out breaking cellular wall, discharges internal water and becomes Interstitial Water, and this Interstitial Water is easily removed by mechanical presses mode;
5, in mud enters into oxidation cylinder, owing to, in spiral cylinder, mud oxidation is insufficient, under the stirring action of gas supervisor and gas service pipe, mud is aoxidized by active gas further, to realize the fully oxidized of mud;
6, the mud after being substantially oxidized enters in extra-high voltage permeating and dewatering device and carries out press dewatering, squeeze pressure is 3-5MPa, and mud, under high-voltage oil cylinder effect, is extruded by stripper plate, now flashboard cuts out, and mud is gradually removed by moisture under high pressure effect.
7, when the beginning of high-pressure compressing, DC source is initially powered up, logical positive electricity on positive plate, logical negative electricity on minus plate, moisture positively charged, and mud is electronegative, capillary water, the absorption water etc. that are difficult in mud be removed by mechanical force run toward minus plate direction under electric field force effect, and mud stays positive plate side, and direct current power source voltage is 40-60V.
8, along with the carrying out of squeezing, mud is extruded the most real, and now supercharger is had an effect, and increases pressure further, and now pressure can reach more than 5MPa.
9, after dehydration, quick-opening device is opened, and spoil disposal oil cylinder pulls gripper shoe, and mud is discharged by high-voltage oil cylinder, completes whole process.
Below only preferred embodiment of the present invention is described, but is not to be construed as limitations on claims.The present invention is not only limited to above example, and its concrete structure allows to change.In a word, all various changes made in the protection domain of independent claims of the present invention are the most within the scope of the present invention.

Claims (10)

  1. null1. one kind high mass dryness fraction sewage sludge treatment system,Including reactive gas generator (1)、Helix filter device (2)、Oxidation cylinder (3) and extra-high voltage permeating and dewatering device (4),It is characterized in that: described helix filter device (2) includes helical axis (2.1)、Helical blade (2.2) and spiral cylinder (2.3),Described helical axis (2.1) is installed in spiral cylinder (2.3),Described helical blade (2.2) is arranged on helical axis (2.1) and above and is arranged between helical axis (2.1) and spiral cylinder (2.3) inwall,Described helical axis (2.1) is hollow,Its end inlet is connected with reactive gas generator (1),And on spiral axial wall, it is provided with the passage being passed through for active gases,The end of described spiral cylinder (2.3) is connected with oxidation cylinder (3),Described helical axis (2.1) extends in described oxidation cylinder (3),The outlet of described oxidation cylinder (3) is connected with extra-high voltage permeating and dewatering device (4).
  2. High mass dryness fraction sewage sludge treatment system the most according to claim 1, it is characterized in that: described extra-high voltage permeating and dewatering device (4) includes supertension dewatering device and electro-osmosis mechanism, described electro-osmosis mechanism is installed in supertension dewatering device, after the sewage sludge of entrance extra-high voltage permeating and dewatering device separates out capillary water and absorption water under the effect of electro-osmosis mechanism, in supertension dewatering device, carry out supertension dehydration, obtain high mass dryness fraction mud.
  3. High mass dryness fraction sewage sludge treatment system the most according to claim 1 and 2, it is characterized in that: described spiral cylinder (2.3) is provided with backboard (6) at the connector of oxidation cylinder (3), described backboard (6) props up described connector under the effect of flexible member (7), helical axis (2.1) is provided with location-plate (8), described backboard (6) is sheathed on helical axis (2.1), described flexible member (7) one end is connected on location-plate (8), and the other end is connected on backboard (6).
  4. High mass dryness fraction sewage sludge treatment system the most according to claim 1, it is characterised in that: the back segment of described helical axis (2.1) is that reducing is arranged, and after certainly going to, its diameter of axle progressively becomes big;The back segment of described helical blade (2.2) is distance changing mechanism, and after certainly going to, its blade pitgh progressively reduces.
  5. High mass dryness fraction sewage sludge treatment system the most according to claim 1, it is characterized in that: the helical axis part in extending into oxidation cylinder (3) is provided with gas supervisor (9), it is placed with gas service pipe (10) on described gas supervisor (9), described gas supervisor (9) is connected in helical axis (2.1), described gas supervisor (9) is perpendicular to helical axis (2.1), and described oxidation cylinder (3) is cylindrical shape.
  6. nullHigh mass dryness fraction sewage sludge treatment system the most according to claim 2,It is characterized in that: described supertension dewatering device includes high-pressure compressing cylinder (4.1)、Stripper plate (4.2)、Gripper shoe (4.3)、High-voltage oil cylinder (4.4)、Filter cloth、Discharge oil cylinder (4.5) and supercharger (4.6),Described stripper plate (4.2) and gripper shoe (4.3) are arranged in high-pressure compressing cylinder 4.1,Described high-pressure compressing cylinder 4.1、Stripper plate 4.2 and gripper shoe 4.3 form filter pressing cavity,Described stripper plate (4.2) is connected with the piston rod of high-voltage oil cylinder (4.4),Described gripper shoe (4.3) is connected with the piston rod of discharge oil cylinder (4.5),Described stripper plate (4.2) and gripper shoe (4.3) are provided with the hole distributed of supplying water,And it is covered with filter cloth respectively at stripper plate (4.2) and gripper shoe (4.3),Described supercharger (4.6) is connected with high-voltage oil cylinder (4.4),With to high-voltage oil cylinder (4.4) supercharging.
  7. null7. according to the high mass dryness fraction sewage sludge treatment system described in claim 2 or 6,It is characterized in that: described electro-osmosis mechanism includes DC source generator (4.7)、Positive plate (4.8) and minus plate (4.9),The anode of DC source generator (4.7)、Negative electrode respectively with positive plate (4.8)、Minus plate (4.9) electrically connects,Described positive plate (4.8) is fixed on stripper plate (4.2),Described minus plate (4.9) is fixed in gripper shoe (4.3),Between positive plate (4.8) and stripper plate (4.2)、It is provided with insulator between minus plate (4.9) and gripper shoe (4.3),Positive plate (4.8)、It is also equipped with insulator between minus plate (4.9) and high-pressure compressing cylinder (4.1),Also the hole distributed of supplying water is offered on described positive plate (4.8) and minus plate (4.9).
  8. 8. according to the high mass dryness fraction sewage sludge treatment system described in claim 2 or 6, it is characterized in that: on the piston rod of described high-voltage oil cylinder (4.4), be additionally provided with limit switch (4.10), described high-pressure compressing cylinder (4.1) arranges one end of gripper shoe and is additionally provided with quick-opening device (4.11), and described quick-opening device (4.11) is connected for opening soon with gripper shoe (4.3).
  9. High mass dryness fraction sewage sludge treatment system the most according to claim 1, it is characterized in that: described helical axis (2.1) and helical blade (2.2) are two sets, two helical axis (2.1) parallel arranged, helical blade (2.2) intermeshes embedding, and the helical blade (2.2) on one of them helical axis (2.1) is embedded in the groove between the helical blade (2.2) of another one helical axis (2.1).
  10. High mass dryness fraction sewage sludge treatment system the most according to claim 1, it is characterized in that: the active gases that described reactive gas generator (1) produces is ozone, every gram of sludge suspension solid at least needs 30 milligrams of ozone, and in equipment, the response time was at 30-60 minute.
CN201511015306.5A 2015-12-31 2015-12-31 High mass dryness fraction sewage sludge treatment system Expired - Fee Related CN105819636B (en)

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CN107963678A (en) * 2017-12-20 2018-04-27 成都育芽科技有限公司 A kind of intelligent and high-efficiency sewage disposal device
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CN104944735A (en) * 2015-06-08 2015-09-30 柳建国 Dewatering and drying treatment method used in biological sludge plant, sludge dewatering extruder and sludge drying extruder

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