CN105948301B - High mass dryness fraction sewage sludge integrated sewage treatment system and method - Google Patents
High mass dryness fraction sewage sludge integrated sewage treatment system and method Download PDFInfo
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- CN105948301B CN105948301B CN201610220891.0A CN201610220891A CN105948301B CN 105948301 B CN105948301 B CN 105948301B CN 201610220891 A CN201610220891 A CN 201610220891A CN 105948301 B CN105948301 B CN 105948301B
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- 239000010801 sewage sludge Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000010865 sewage Substances 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 95
- 239000010802 sludge Substances 0.000 claims abstract description 75
- 230000003647 oxidation Effects 0.000 claims abstract description 58
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 58
- 230000018044 dehydration Effects 0.000 claims description 27
- 238000006297 dehydration reaction Methods 0.000 claims description 27
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 239000011941 photocatalyst Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 29
- 208000005156 Dehydration Diseases 0.000 description 25
- 239000003921 oil Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 10
- 238000001914 filtration Methods 0.000 description 7
- 238000005370 electroosmosis Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000004744 fabric Substances 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
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- 238000001125 extrusion Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
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- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
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- 239000004568 cement Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4698—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electro-osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of high mass dryness fraction sewage sludge integrated sewage treatment system and methods, including reactive gas generator (1), helix filter device (2), it aoxidizes cylinder (3), the helix filter device (2) is double-spiral structure, including helical axis (2.1), helical blade (2.2) and spiral cylinder (2.3), the helical axis (2.1) is installed in spiral cylinder (2.3), the helical blade (2.2) is arranged on helical axis (2.1) and is arranged between helical axis (2.1) and spiral cylinder inner wall, the helical axis (2.1) is hollow, its end inlet is connected with reactive gas generator, and the venthole being passed through for active gases is equipped on spiral axial wall, the end of the spiral cylinder (2.3) is connected with oxidation cylinder (3) It connects.The present invention is applied widely, low energy consumption, be conducive to sludge reduction, treated, and moisture percentage in sewage sludge is low.
Description
Technical field
The present invention relates to sewage sludge process field, specifically a kind of high mass dryness fraction sewage sludge integrated sewage treatment system
And method.
Background technique
Cut-off 2015, China's sludge quantity reaches 40,000,000 tons (80% moisture content), it is contemplated that is up to 60,000,000 to the year two thousand twenty
Ton, such huge sludge cannot such as be properly settled, and significant impact will be brought for environment, also as people's production and living
One big burden.Due to the High water cut of sludge, dehydration is difficult, be rich in organic matter, easy corruption, produces stench；Containing pathogenic microorganism and again
The pollutants such as metal, so that the disposition and processing of sludge are very troublesome.
According to China " urban sewage treatment plant sludge processing disposition and pollution prevention technique policy ", at city sludge processing
Set stabilisation to be followed, minimizing, innoxious, recycling principle, to moisture percentage in sewage sludge require to drop to 60% or less do again it is final
Disposition.It is especially stringenter by national " 13 " planning requirement.Current specific resistance to filtration technology path is numerous, including detests
Oxygen digestion, pyrohydrolysis+anaerobic digestion, biological compost, sludge bakes bricks, dehydration+landfill, heat drying+burning, cement collaboration are burned,
Carbonization etc., moisture content height are the where the shoe pinches of Treatment of Sludge, and sludge reduction is the basis of other " four change ".Either at which kind of
Mode is set, moisture percentage in sewage sludge is reduced, carrying out minimizing processing to sludge is all maximum, most basic premise, deeply dehydrating sludge
One of it is the key that the disposition of sludge subsequent processing, be also the biggest problem.
Since the moisture of sludge and common Sandy Soil Moisture nature difference are larger, the moisture contained in sludge includes Interstitial Water
(70%), capillary water (20%), absorption water (7%), internal water (3%), Interstitial Water is not bound directly with solid, thus passes through machinery
Method is more easily separated, and capillary water, surface adsorption water, internal water are irreducible water, are difficult to remove by common mechanical means.Institute
To generally require to give early period using other methods and pre-process.
Current common mechanical dehydration mode and equipment mainly have belt type filter dehydration, centrifugal dehydration, plate compression dehydration
Three categories.For municipal sludge, band filter, folded spiral shell dewaterer, the dewatered filter cake moisture content of centrifuge about exist
75%-80%, the moisture percentage in sewage sludge of diaphragm plate frame filter press dehydration is generally 60% or so.Superelevation compression elasticity squeezer is a kind of pressure
Power is bigger, more efficient filtering equipment and solid-liquid separating equipment, and whole process is broadly divided into charging -- elasticity squeezing -- and connects
The Four processes such as liquid -- discharging.The equipment pressure is directly from the pressure of hydraulic cylinder, and directly to squeeze, squeeze pressure be can reach
The 5-7 MPa single batch duty cycle is 1.0 ~ 1.5h, and working efficiency is 3-4 times of diaphragm filter press, dehydrated sludge moisture content
It can achieve 50% or so.But there is the problems such as energy consumption is high, equipment cost is high, squeezing spring needs to be replaced frequently.
Generally generally require to add a large amount of ferric trichloride and lime early period using above-mentioned, for over dry sludge amount in fact
Be it is increased, violate the minimizing principle of sludge；In addition the medicament added for the subsequent burning of sludge, resource utilization etc. all
Adverse effect is brought, is generally only used for filling.So being one using addition medicament deep dehydration+landfill processing mode
The plan of a emergency, and it is then improper as long-term plan.In view of this, it is necessary to provide the new thinking of one kind to carry out the place of sludge
Reason disposition, lays the foundation for the resource utilization of sludge.
Currently, electroosmotic dewatering is carried out there is also some problems to sludge, mainly equipment galvano-cautery is serious, maintenance capacity mistake
The disadvantages of the problems such as big, the technology is in the presence of using electric energy and excessive energy consumption in addition, the reasons such as dehydration efficiency is not high, there is presently no
It is used widely.
Summary of the invention
In view of this, the present invention is for above-mentioned dehydrated sludge moisture content of the existing technology is excessively high, vulnerable part is more, energy
Consumption is big, and the problem of be unfavorable for minimizing, provide it is a kind of it is applied widely, low energy consumption, it is aqueous to be conducive to sludge reduction, sludge
The low high mass dryness fraction sewage sludge integrated sewage treatment system and method for rate.
The technical solution of the invention is as follows, provides a kind of high mass dryness fraction sewage sludge integrated sewage treatment system with flowering structure
System, including reactive gas generator, helix filter device and oxidation cylinder, the helix filter device includes helical axis, spiral shell
Vane piece and spiral cylinder, the helical axis are installed in spiral cylinder, and the helical blade is arranged on helical axis simultaneously
It is arranged between helical axis and spiral cylinder inner wall, the helical axis is hollow, end inlet and reactive gas generator
It is connected, and is equipped with the venthole being passed through for active gases on spiral axial wall, the end of the spiral cylinder and oxidation cylinder
Body is connected, and the helix filter device is double-spiral structure, and the helical axis and helical blade are two sets, two spirals
Axis parallel arranged, helical blade intermesh insertion, and the helical blade on one of helical axis is embedded into another spiral
In slot between axial screw blade；One of helical axis extends in the oxidation cylinder.
Preferably, being equipped with backboard at the connector of the spiral cylinder and oxidation cylinder, the backboard is in elastic member
The connector is resisted under the action of part, positioning plate is installed on helical axis, the backboard is sheathed on helical axis, described
Elastic element one end be connected on positioning plate, the other end is connected on backboard.The back segment of helix filter device is extrusion dehydration,
Oxidation of the active gases to organic matter in sludge is realized simultaneously in dehydration, so that the internal water of sludge is released, in bullet
Property backboard under the action of, further progress squeeze filtering means dehydration, back platen pressure be set between 0.1-0.6MPa, by dehydration
Sludge overcomes backboard pressure to enter oxidation cylinder.
Preferably, the back segment of the helical axis is variable diameter setting, its diameter of axle gradually becomes larger after going to certainly；The helical-blade
The back segment of piece is distance changing mechanism, its blade pitgh gradually reduces after going to certainly.After the gravity dehydration for undergoing leading portion, due in back segment
The diameter of axle of helical axis becomes larger, the spacing of helical blade becomes smaller, then helical axis, helical blade and spiral cylinder are formed by cavity then
Gradually become smaller, with the feeding of sewage sludge, the pressure by helix filter device is also just increasing, facilitates further
Dehydration.
Preferably, being provided with gas supervisor, the gas supervisor extending into the oxidation intracorporal spiral shaft portion of cylinder
On be placed with gas service pipe, the gas supervisor be connected in helical axis, the gas supervisor is perpendicular to helical axis, institute
The oxidation cylinder stated is cylindrical shape.By the setting of gas supervisor and gas service pipe, active gases can enter gas from helical axis
Body supervisor and gas service pipe, simultaneously because helical axis will drive gas supervisor's rotation, oxidation cylinder are set convenient for being sufficiently oxidized
It is set to the cylinder-shaped mutual coordinated of design that can be responsible for gas.
Preferably, photocatalyst is provided on the intracorporal barrel of oxidation cylinder, atmosphere supervisor and big gas branch pipe, and
Ultraviolet lamp is installed in oxidation cylinder.Under the irradiation of ultraviolet light, photocatalyst can be to the further catalysis oxidation of sludge.
Preferably, the helical blade being arranged on helical axis be hollow twi-tier blade, the hollow space of helical blade with
Helical axis is connected, and is equipped with hole corresponding with the venthole opened up on helical axis.
As an improvement, the multistage dehydration device further includes the spiral axial brake device for driving helical axis to rotate,
The driving device for slow-run includes motor, driving gear, driving gear, tumbler gear, driven gear, and motor is variable-frequency electric
Machine, motor speed can be adjusted as needed.The driving gear is equal with the driven wheel gear number of gears, the driving
Gear and driven gear are respectively used to two helical axis of driving.
Preferably, the active gases that the reactive gas generator generates is ozone, every gram of sludge suspension solid is extremely
30 milligrams of ozone are needed less, and the reaction time was at 30-60 minutes in equipment.Using ozone as active gases, and it is arranged corresponding
Concentration limit --- 30mgO3/gMLSS can be realized fully oxidized.
Another technical solution of the invention is to provide a kind of high mass dryness fraction sewage sludge integrated sewage treatment of following steps
Method, based on high mass dryness fraction sewage sludge integrated sewage treatment system described above, the integrated sewage treatment method further include with
Lower step:
Reactive gas generator is passed through active air into helical axis, and sewage sludge enters helix filter device, in spiral
In the leading portion of filter device, sewage sludge is dehydrated under its own gravity；Helical axis rotation, drives sewage sludge to march forward
It gives, in the back segment of helix filter device, sewage sludge squeezes between helical blade and spiral cylinder, to realize that spiral is de-
Water；
Enter oxidation cylinder through the dewatered sewage sludge of spiral, it is further fully oxidized under the action of active air.
Preferably, the active air enters oxidation by the atmosphere supervisor being set on helical axis and big gas branch pipe
Cylinder, helical axis rotate and drive that atmosphere thereon is responsible for and big gas branch pipe rotates in oxidation cylinder so that active air with
Sludge into oxidation cylinder is sufficiently mixed.
Preferably, being located at the intracorporal barrel of oxidation cylinder, atmosphere supervisor and big gas branch pipe under the irradiation of ultraviolet lamp
On photocatalyst to oxidation the intracorporal sludge catalysis oxidation of cylinder, with active air act synergistically, make sludge that moisture further be precipitated.
Using the above structure and method, compared with prior art, the present invention having the advantage that (1) passes through active gases
Sludge is aoxidized, the cell wall of sludge is destroyed, releases the internal water of sludge, so that internal water becomes feasible between filtering
Gap water is, it can be achieved that the high mass dryness fraction of sludge is dehydrated；(2) it is aoxidized using active gases, does not need to add such as ferric trichloride, lime, wadding
The medicaments such as solidifying agent, can save medicament expense, generate advantageous effects simultaneously for the subsequent disposition of sludge and resource utilization；(3)
Since leading portion equipment is using helix filter device, the moisture percentage in sewage sludge scope of application is wider, and moisture percentage in sewage sludge can be in 80%-99%
Between fluctuated；(4) active gases treatment process is used, active gases destroys the cell wall of sludge, releases internal water, interior
The precipitation of portion's water is convenient for further extracting.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the high mass dryness fraction sewage sludge integrated sewage treatment system of the present invention；
Fig. 2 is double-stranded helix filter device；
Fig. 3 is the partial enlarged view of helix filter device；
Fig. 4 is the structural schematic diagram of spiral axial brake device；
As shown, 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, branch
Fagging, 4.4, high-voltage oil cylinder, 4.5, discharge oil cylinder, 4.6, booster, 4.7, DC power supply generator, 4.8, anode plate, 4.9,
Cathode plate, 4.10, limit switch, 4.11, quick-opening device, 5, air vessel, 6, backboard, 7, elastic element, 8, positioning plate, 9, gas
Body supervisor, 10, gas service pipe, 11, gas purifier, 12, motor, 13, driving gear, 14, driving gear, 15, tumbler gear,
16, driven gear.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
The present invention covers any substitution made on the essence and scope of the present invention, modification, equivalent method and scheme.For
So that the public is had thorough understanding to the present invention, is described in detail concrete details in the following preferred embodiment of the present invention, and
The present invention can also be understood completely in description without these details for a person skilled in the art.In addition, the attached drawing of the present invention
In be explained herein not being drawn to scale accurately completely for the needs of signal.
As shown in Figure 1, a kind of high mass dryness fraction sewage sludge integrated sewage treatment system of the invention, including reactive gas generator
1, helix filter device 2, oxidation cylinder 3 and extra-high voltage permeating and dewatering device 4, the helix filter device 2 include spiral
Axis 2.1, helical blade 2.2 and spiral cylinder 2.3, the helical axis 2.1 are installed in spiral cylinder 2.3, the spiral
Blade 2.2 is arranged on helical axis 2.1 and is arranged between 2.3 inner wall of helical axis 2.1 and spiral cylinder, the helical axis
2.1 is hollow, and end inlet is connected with reactive gas generator 1, and equipped with being passed through for active gases on spiral axial wall
Venthole, the end of the spiral cylinder 2.3 is connected with oxidation cylinder 3, and the helical axis 2.1 extends to the oxidation
In cylinder 3, the outlet of the oxidation cylinder 3 is connected with extra-high voltage permeating and dewatering device 4.Extra-high voltage permeating and dewatering device
4 be preferred embodiment, the essential features of non-present invention, but for convenience of description and globality, therefore puts together and retouched
It states.
The integrated sewage treatment system further includes air vessel 5, the air vessel 5 also end with helical axis 2.1
Portion's entrance is connected, and the active gases to generate with reactive gas generator 1 mixes, thus control within the unit time into
Enter the active gases amount of system, and then adjusts concentration of the active gases in sewage sludge.
The reactive gas generator and air vessel is connected by gas line, flexible connector with helical axis,
In double-spiral structure, flexible connector quantity is 2, and 1 elastic element, gas line are respectively arranged on each helical axis
With that section of fixation of flexible connector, helical axis is rotatably connected on flexible connector, and flexible connector guarantees gas
It does not leak, is respectively arranged with gas control valve and flow on the pipeline of active air generator and normal air container
Meter, can adjust the ratio of active air and normal air according to the content of organics of sludge and type.
The active gases that the reactive gas generator 1 generates is ozone, and every gram of sludge suspension solid at least needs 30
Milligram ozone (30mgO3/gMLSS), the reaction time was at 30-60 minutes in equipment.Using ozone as active gases, and it is arranged
Corresponding concentration limit --- 30mgO3/gMLSS, MLSS is mixed genetic-neural network.
Cylinder in order to further promote oxidation of the active air in oxidation cylinder 3 to sewage sludge, in oxidation cylinder 3
It is provided with photocatalyst on wall, atmosphere supervisor and big gas branch pipe, and ultraviolet lamp is installed in oxidation cylinder 3.Ultraviolet
Under the irradiation of light, photocatalyst can be to the further catalysis oxidation of sludge.
The upper end of oxidation cylinder is provided with gas purifier 11, and the mixed gas after oxidation is finally from gas purifier 11
Discharge, is discharged after reaching discharge standard.
The extra-high voltage permeating and dewatering device 4 includes super-pressure dewatering device and electro-osmosis mechanism, the electric osmose
Saturating mechanism is installed in super-pressure dewatering device, into extra-high voltage permeating and dewatering device sewage sludge in electro-osmosis mechanism
After the lower precipitation capillary water of effect and absorption water, superelevation press-dehydrating is carried out in super-pressure dewatering device, obtains high mass dryness fraction sludge.It is super
High pressure electroosmotic dewatering device is exactly the coupling of super-pressure dewatering device and electro-osmosis mechanism, can be realized electro-osmosis and super-pressure
The synergistic effect of dehydration.
It is equipped with backboard 6 at the spiral cylinder 2.3 and the connector of oxidation cylinder 3, the backboard 6 is in elastic element 7
Under the action of resist the connector, positioning plate 8 is installed on helical axis 2.1, the backboard 6 is sheathed on helical axis 2.1
On, described 7 one end of elastic element is connected on positioning plate 8, and the other end is connected on backboard 6.The back segment of helix filter device
For extrusion dehydration, oxidation of the active gases to organic matter in sludge is realized simultaneously in dehydration, so that the internal water quilt of sludge
Release, under the action of elastic backboard, further progress squeeze filtering means dehydration, back platen pressure be set in 0.1-0.6MPa it
Between, overcome backboard pressure to enter oxidation cylinder by dewatered sludge.
The back segment of the helical axis 2.1 is variable diameter setting, its diameter of axle gradually becomes larger after going to certainly；The helical blade 2.2
Back segment be distance changing mechanism, go to certainly after its blade pitgh gradually reduce.After the gravity dehydration for undergoing leading portion, due in back segment spiral shell
The diameter of axle of spin axis becomes larger, the spacing of helical blade becomes smaller, then helical axis, helical blade and spiral cylinder be formed by cavity then by
Step becomes smaller, and with the feeding of sewage sludge, the pressure by helix filter device is also just increasing, helps further to take off
Water.
The spiral shaft portion extended into oxidation cylinder 3 is provided with gas supervisor 9, arranges on the gas supervisor 9
Have a gas service pipe 10, the gas supervisor 9 be connected in helical axis 2.1, the gas is responsible for 9 perpendicular to helical axis
2.1, the oxidation cylinder 3 is cylindrical shape.By the setting of gas supervisor and gas service pipe, active gases can be from helical axis
Into gas supervisor and gas service pipe, convenient for being sufficiently oxidized.A wherein gas service pipe on gas supervisor is close to oxidation cylinder
On internal wall, the sludge being sticked on barrel can be scraped off using the gas service pipe for being close to oxidation cylinder.
The super-pressure dewatering device includes high-pressure compressing cylinder 4.1, stripper plate 4.2, support plate 4.3, high-voltage oil cylinder
4.4, filter cloth, discharge oil cylinder 4.5 and booster 4.6, the stripper plate 4.2 and support plate 4.3 are set to high-pressure compressing cylinder
In 4.1, the high-pressure compressing cylinder 4.1, stripper plate 4.2 and support plate 4.3 form filters pressing cavity, the stripper plate 4.2 with
The piston rod of high-voltage oil cylinder 4.4 is connected, and the support plate 4.3 is connected with the piston rod of discharge oil cylinder 4.5, and described squeezes
Pressing plate 4.2 and support plate 4.3 are provided with the hole supplied water and distributed, and are covered with filter respectively in stripper plate 4.2 and support plate 4.3
Cloth, the booster 4.6 are connected with high-voltage oil cylinder 4.4, to be pressurized to high-voltage oil cylinder 4.4.
The electro-osmosis mechanism includes DC power supply generator 4.7, anode plate 4.8 and cathode plate 4.9, DC power supply hair
Anode, the cathode of raw device 4.7 are electrically connected with anode plate 4.8, cathode plate 4.9 respectively, and the anode plate 4.8 is fixed on stripper plate
On 4.2, the cathode plate 4.9 is fixed in support plate 4.3, between anode plate 4.8 and stripper plate 4.2, cathode plate 4.9 and branch
It is provided with insulator between fagging 4.3, is also equipped between anode plate 4.8, cathode plate 4.9 and high-pressure compressing cylinder 4.1 absolutely
Edge body also offers the hole supplied water and distributed on the anode plate 4.8 and cathode plate 4.9.The voltage of electro-osmosis is 40-60V.
Limit switch 4.10 is additionally provided on the piston rod of the high-voltage oil cylinder 4.4, the high-pressure compressing cylinder 4.1 is set
The one end for setting support plate is additionally provided with quick-opening device 4.11, and the quick-opening device 4.11 is that can open to connect fastly with support plate 4.3.
As shown in Fig. 2, double-stranded helix filter device is illustrated, the helical axis 2.1 and helical blade 2.2
It is two sets, two 2.1 parallel arrangeds of helical axis, helical blade 2.2 intermeshes insertion, the spiral shell on one of helical axis 2.1
Vane piece 2.2 is embedded into the slot between the helical blade 2.2 of another helical axis 2.1.Two helical blades can be clear mutually
It washes, filtering filter cloth is equipped on the inside of spiral cylinder, filtering filter cloth abutting is fixed on the inner wall of spiral cylinder, for 360 degree of arrangements, spiral shell
The fluid bore of multiple outflows of supplying water is offered on rotation cylinder.When being arranged to double-spiral structure in Fig. 2, then the shape of spiral cylinder
Also it is matched with the helical axis of double helix and helical blade.
As shown in figure 3, illustrate the partial enlarged view of helix filter device, helical axis 2.1 through spiral cylinder 2.3 and
Cylinder 3 is aoxidized, helical axis 2.1 is mounted on the bearing for being located at spiral cylinder 2.3 and oxidation cylinder 3, entire helical axis 2.1
The helical blade 2.2 of upper setting is hollow twi-tier blade, and the hollow space of helical blade 2.2 is connected with helical axis 2.1, and
Equipped with hole corresponding with the venthole opened up on helical axis 2.1, a fairly large number of gas is offered on entire helical axis 2.1
Hole also offers multiple holes on each helical blade 2.2, so that active air comes into full contact with sludge, increases mass transfer effect.
As shown in figure 4, illustrating one embodiment of spiral axial brake device, spiral axial brake device is for driving spiral
Axis rotation, Fig. 4 structure is dedicated for the spiral axial brake device with double-spiral structure cooperation in Fig. 2.The screw drives dress
It sets including motor 12, driving gear 13, driving gear 14, tumbler gear 15, driven gear 16, motor 12 is variable-frequency motor, electricity
Machine revolving speed can be adjusted as needed.The driving gear 14 driving equal, described with driven 16 wheel gear number of the gear teeth
Gear 13 and driven gear 16 are respectively used to two helical axis of driving, i.e., engage with the gear on helical axis.Using the mechanism, make
The revolving speed for obtaining two helical axis is consistent, and is unlikely to generate and interferes with each other phenomenon.
It should be noted that the rigid element contacted in the present invention with active gases (ozone), can use corrosion resistance
Strong stainless steel substantially will not be extended equipment by ozone corrosion for example, the ferrochrome effect containing 25%Cr is preferable
The service life of material.For in this system, being related to the position of sealing, corrosion resistant silicon rubber or addition corrosion resistant agent can be used
Rubber product seal.Although not by extra-high voltage permeating and dewatering device 4 as essential features of the invention,
High pressure electroosmotic dewatering device 4 actually can be used as supplementary mechanism or subsequent processing mechanism of the invention, therefore give in embodiment
To record.
Processing method or working principle of the invention is as follows:
1, the sludge of moisture content high (95%-99%) enters from the feed inlet of spiral cylinder, and the feed inlet is located at spiral
It above the front end of cylinder, is entered in spiral cylinder by feed inlet, in the leading portion of helix filter device, sewage sludge is in weight
It is dehydrated under power effect, moisture is by filter cloth, and mud granule then stays in spiral cylinder；
2, sludge is pushed ahead under the promotion of helical blade, and sludge water content gradually removes during propulsion, in spiral shell
The back segment of vane piece as helical blade spacing reduces and spiral shaft diameter increases, squeezes sludge in addition to gravity,
There are also extrusion dehydrations at this time；
3, in spiral cylinder end, sludge is gathered and is squeezed mutually, and under backboard effect, sludge is by certain back
Pressure, sludge is pressed further by dehydration at this time, and when sludge is cumulative, pressure is more than backboard pressure, and backboard is opened, sludge quilt
It is expressed into oxidation large cylinder；
4, during gravity dehydration and extrusion dehydration, active gases is passed through from helical axis, is aoxidized to sludge, will
Cell in sludge carries out broken wall, and releasing internal water becomes Interstitial Water, which is easy removing by mechanical presses mode；
5, sludge enters in oxidation cylinder, since in spiral cylinder, sludge oxidation is insufficient, in gas supervisor and gas
Under the stirring action of body branch pipe, active gas further aoxidizes sludge, to realize the fully oxidized of sludge；
6, the sludge after being substantially oxidized enters in extra-high voltage permeating and dewatering device and carries out press dewatering, squeeze pressure
For 3-5MPa, stripper plate squeezes sludge under high-voltage oil cylinder effect, and flashboard is closed at this time, and sludge is acted on by high pressure
Lower moisture gradually removes.
7, DC power supply is initially powered up at the beginning of high-pressure compressing, and positive electricity is led on anode plate, leads to negative electricity on cathode plate,
Moisture is positively charged, and sludge is negatively charged, and the capillary water removed by mechanical force, absorption water etc. are not easy in sludge under electric field force effect
It is run toward cathode plate direction, and sludge stays in anode plate side, direct current power source voltage 40-60V.
8, as the progress of squeezing, sludge are extruded very real, booster is had an effect at this time, further increases pressure,
Pressure can achieve 5MPa or more at this time.
9, after being dehydrated, quick-opening device is opened, and spoil disposal oil cylinder pulls support plate, and sludge is discharged high-voltage oil cylinder, is completed
Whole process.
Only the preferred embodiment of the present invention has been described above, but is not to be construed as limiting the scope of the invention.This
Invention is not only limited to above embodiments, and specific structure is allowed to vary.In short, all guarantors in independent claims of the present invention
Made various change is within the scope of the invention in shield range.
Claims (9)
1. a kind of high mass dryness fraction sewage sludge integrated sewage treatment system is based on sewage sludge multistage dehydration device, including active gases
Generator (1), helix filter device (2) and oxidation cylinder (3), it is characterised in that: the helix filter device (2) includes spiral shell
Spin axis (2.1), helical blade (2.2) and spiral cylinder (2.3), the helical axis (2.1) are installed on spiral cylinder (2.3)
Interior, the helical blade (2.2) is arranged on helical axis (2.1) and is arranged in helical axis (2.1) and spiral cylinder (2.3)
Between wall, the helical axis (2.1) be it is hollow, end inlet is connected with reactive gas generator (1), and in helical axis
Wall is equipped with the venthole being passed through for active gases, and the end of the spiral cylinder (2.3) is connected with oxidation cylinder (3),
The helix filter device (2) is double-spiral structure, and the helical axis (2.1) and helical blade (2.2) are two sets, two
Helical axis (2.1) parallel arranged, helical blade (2.2) intermesh insertion, the helical blade on one of helical axis (2.1)
(2.2) it is embedded into the slot between the helical blade (2.2) of another helical axis (2.1)；One of helical axis (2.1) is prolonged
It extends in the oxidation cylinder (3)；The active gases is ozone.
2. high mass dryness fraction sewage sludge integrated sewage treatment system according to claim 1, it is characterised in that: the spiral cylinder
(2.3) and at the connector of oxidation cylinder (3) backboard (6) are equipped with, the backboard (6) supports under the action of elastic element (7)
Connector is stated in residence, is equipped on helical axis (2.1) positioning plate (8), and the backboard (6) is sheathed on helical axis (2.1),
Described elastic element (7) one end is connected on positioning plate (8), and the other end is connected on backboard (6).
3. high mass dryness fraction sewage sludge integrated sewage treatment system according to claim 1 or 2, it is characterised in that: the spiral
The back segment of axis (2.1) is variable diameter setting, its diameter of axle gradually becomes larger after going to certainly；The back segment of the helical blade (2.2) is displacement
Structure, its blade pitgh gradually reduces after going to certainly.
4. high mass dryness fraction sewage sludge integrated sewage treatment system according to claim 1, it is characterised in that: extending into oxidation
Spiral shaft portion in cylinder (3) is provided with gas supervisor (9), is placed with gas service pipe (10) on the gas supervisor (9),
It is connected in the gas supervisor (9) and helical axis (2.1), the gas supervisor (9) is perpendicular to helical axis (2.1), institute
The oxidation cylinder (3) stated is cylindrical shape.
5. high mass dryness fraction sewage sludge integrated sewage treatment system according to claim 4, it is characterised in that: in oxidation cylinder
Barrel, be provided with photocatalyst on atmosphere supervisor and big gas branch pipe, and ultraviolet lamp is installed in oxidation cylinder.
6. high mass dryness fraction sewage sludge integrated sewage treatment system according to claim 2, it is characterised in that: the integrated form
Processing system further includes the spiral axial brake device for driving helical axis to rotate, and the driving device for slow-run includes motor
(12), gear (13), driving gear (14), tumbler gear (15), driven gear (16) are driven, motor (12) is variable-frequency motor,
Motor speed can be adjusted as needed；The driving gear (14) is equal with the driven gear teeth (16) wheel gear number, described
Driving gear (13) and driven gear (16) be respectively used to driving two helical axis.
7. a kind of high mass dryness fraction sewage sludge integrated sewage treatment method, integrated based on high mass dryness fraction sewage sludge described in claim 1
Formula processing system, the integrated sewage treatment method are further comprising the steps of: reactive gas generator is passed through work into helical axis
Property gas, sewage sludge enters helix filter device, in the leading portion of helix filter device, sewage sludge its own gravity make
With lower dehydration；Helical axis rotation, drives sewage sludge to feed forward, in the back segment of helix filter device, sewage sludge is in spiral shell
It is squeezed between vane piece and spiral cylinder, to realize that spiral is dehydrated；
Enter oxidation cylinder through the dewatered sewage sludge of spiral, it is further fully oxidized under the action of active gases；It is described
Active gases is ozone.
8. high mass dryness fraction sewage sludge integrated sewage treatment method according to claim 7, it is characterised in that: the active gas
Body enters oxidation cylinder by the atmosphere that is set on helical axis supervisor and big gas branch pipe, and helical axis rotates and drive thereon big
Gas supervisor and big gas branch pipe rotate in oxidation cylinder, so that active gases is sufficiently mixed with the sludge for entering oxidation cylinder.
9. high mass dryness fraction sewage sludge integrated sewage treatment method according to claim 7, it is characterised in that: in ultraviolet lamp
Under irradiation, the photocatalyst on the intracorporal barrel of oxidation cylinder, atmosphere supervisor and big gas branch pipe is to the oxidation intracorporal sludge of cylinder
Catalysis oxidation acts synergistically with active gases, makes sludge that moisture further be precipitated.
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| CN107759048A (en) * | 2017-11-24 | 2018-03-06 | 江苏杰尔科技股份有限公司 | A kind of sludge evaporator |
| CN110342698B (en) * | 2019-08-09 | 2022-08-05 | 北京北重汽车改装有限公司 | Sewage treatment vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621426A (en) * | 1985-06-26 | 1987-01-07 | Fuji Electric Co Ltd | Electroosmotic dehydration apparatus |
| JP2002233875A (en) * | 2001-02-09 | 2002-08-20 | Nippon Chemicon Corp | Method for recovering aluminum hydroxide from aluminum-containing liquid waste |
| CN103253844A (en) * | 2013-05-02 | 2013-08-21 | 上海同臣环保有限公司 | Foldable screw type sludge dewatering machine with electroosmotic dewatering function |
| CN103253841A (en) * | 2012-02-17 | 2013-08-21 | 北京晶霖伟业分离装备技术有限公司 | Electroosmotic coiled sludge dehydrator |
| CN103755400A (en) * | 2014-01-10 | 2014-04-30 | 傅剑锋 | Method for preparing mineral organic fertilizer by using surplus sludge in municipal sewage plants |
| CN103803775A (en) * | 2012-11-09 | 2014-05-21 | 天津越清环保科技有限公司 | High dryness dewatering method and equipment for high moisture content sludge |
| CN204936260U (en) * | 2015-09-01 | 2016-01-06 | 陕西格润环保科技有限公司 | A kind of solid-liquid separating machine |
-
2016
- 2016-04-11 CN CN201610220891.0A patent/CN105948301B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621426A (en) * | 1985-06-26 | 1987-01-07 | Fuji Electric Co Ltd | Electroosmotic dehydration apparatus |
| JP2002233875A (en) * | 2001-02-09 | 2002-08-20 | Nippon Chemicon Corp | Method for recovering aluminum hydroxide from aluminum-containing liquid waste |
| CN103253841A (en) * | 2012-02-17 | 2013-08-21 | 北京晶霖伟业分离装备技术有限公司 | Electroosmotic coiled sludge dehydrator |
| CN103803775A (en) * | 2012-11-09 | 2014-05-21 | 天津越清环保科技有限公司 | High dryness dewatering method and equipment for high moisture content sludge |
| CN103253844A (en) * | 2013-05-02 | 2013-08-21 | 上海同臣环保有限公司 | Foldable screw type sludge dewatering machine with electroosmotic dewatering function |
| CN103755400A (en) * | 2014-01-10 | 2014-04-30 | 傅剑锋 | Method for preparing mineral organic fertilizer by using surplus sludge in municipal sewage plants |
| CN204936260U (en) * | 2015-09-01 | 2016-01-06 | 陕西格润环保科技有限公司 | A kind of solid-liquid separating machine |
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