CN105600918B - A kind of hydrophobic membrane aerator - Google Patents
A kind of hydrophobic membrane aerator Download PDFInfo
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- CN105600918B CN105600918B CN201610133233.8A CN201610133233A CN105600918B CN 105600918 B CN105600918 B CN 105600918B CN 201610133233 A CN201610133233 A CN 201610133233A CN 105600918 B CN105600918 B CN 105600918B
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- vertical beam
- gas distribution
- groove
- distribution pipe
- hollow fiber
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
- C02F3/208—Membrane aeration
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
A kind of hydrophobic membrane aerator, belongs to aerator technical field.Mainly include film frame, crossbeam, terminal conduit, curtain type film assembly, gas distribution pipe, air inlet pipe.The warp architecture that space folding formula is presented in curtain type film assembly in aerator is " snakelike " configuration, gas phase initially enters air inlet pipe, enter back into gas distribution pipe, by gas distribution pipe by gas phase dispersion in hydrophobic hollow fiber film wire, under operating pressure, gas phase is under the promotion of both sides partial pressure difference, spread by membrane micropore, entered in the form of micro-bubble in liquid phase, a part switchs to dissolved state with the hydrone collision rift in liquid phase, and another part is not in time for collision then and just overflows the water surface.
Description
Technical field
The invention belongs to aerator technical field, more particularly to a kind of hydrophobic membrane aerator.
Background technology
Aerator is device indispensable in biological process of wastewater treatment, particularly in activated sludge process, aerator
Even more seem most important.
Current wide variety of aerator is broadly divided into blast aeration, mechanical aeration and joint aeration.Wherein machinery exposes
The equipment of gas mainly has surface aeration machine, rotating brush type aerator etc., it have it is reliability and durability, safeguard it is simple the advantages of, but efficiency it is low,
Power consumption is big；Blast aeration equipment mainly has perforated pipe, fixed micro-porous aerator etc..Blast aeration exposes compared to machinery
Gas, its oxygen-transfer efficiency is high, power consumption is low, but needs structures reclaimed water being vented during maintenance, safeguards complicated.
In order to overcome in traditional aerator a series of problems, such as oxygen utilization rate is low, power consumption is big, maintenance is complicated, this
Patent provides a kind of using aerator of the gas permeability hydrophobic microporous membrane as biography oxygen medium.This aerator, which utilizes, to be dredged
The water-based microporous barrier hydrophobicity of itself, water can not infiltrate film, membrane micropore gassy all the time, oxygen by the process of membranous wall actually
It is the diffusion transmittance process in membrane micropore gas phase, its membrane resistance also can be neglected, therefore there is higher gas to shift for it
Efficiency and relatively low power consumption.
In recent years, as membrane material is in the extensive use of every field and the continuous progress of membrane technology itself, film processing
And membrane module manufacturing cost reduces year by year, hydrophobic hollow fiber film aerator will have vast potential for future development.
The patent of invention of Application No. 201410322384.9 proposes a kind of《Milipore filter aeration board and its method》, the invention
Using a large amount of micropores on hollow cellulose membrane tube wall, milipore filter aeration board is made, with applied to aeration diffusion field.But this exposes
Gas plate is made after doughnut membranogen is tiled, and similar to the configuration of curtain hollow fiber film assembly, this configuration is in reality
In, aeration board may be prevented from full of in whole container, it is uneven to produce aeration because of the limitation of aeration film panel configuration
Even phenomenon.
The content of the invention
Instant invention overcomes the defects of existing aerator, there is provided a kind of hydrophobic membrane aerator and preparation method.
The hydrophobic membrane aerator of the present invention, it is characterised in that mainly include film frame, crossbeam, terminal conduit, curtain type membrane group
Part, gas distribution pipe, air inlet pipe；Film frame comprises at least the vertical beam of four parallel uprights, and the both ends of terminal conduit are separately fixed at two phases
Adjacent vertical beam A and vertical beam B top, multiple crossbeams are also fixed between vertical beam A and vertical beam B, in addition two adjacent vertical beam C and
Also multiple crossbeams are fixed between vertical beam D, the crossbeam position between the crossbeam and vertical beam C and vertical beam D between vertical beam A and vertical beam B is handed over
It is wrong；Gas distribution pipe, gas distribution pipe and air inlet are fixed between vertical beam A and vertical beam B bottom or between vertical beam C and vertical beam D bottom
Pipe connects；Curtain type film assembly be multiple spaced and parallel compositions of hydrophobic hollow fiber film wire curtain structure, the hollow fibre of hydrophobicity
The surface of dimension film wire is provided with microcellular structure；One end of curtain type film assembly is fixed in terminal conduit, and the other end is fixed on gas distribution pipe,
And hydrophobic hollow fiber film wire connects with gas distribution pipe；Curtain type film assembly successively the crossbeam between vertical beam A and vertical beam B with it is perpendicular
Detoured between crossbeam between beam C and vertical beam D, form the warp architecture of space folding formula.
Film frame is cuboid framework structure, and the distance between vertical beam A and vertical beam B are length, and vertical beam A length is height, vertically
In the direction of length and height be width；It is long：It is wide：The ratio between height is 1：(0.6~1)：(1.2~1.8), 4 of cuboid
There has been the tripod of fixation the bottom of side.Terminal conduit is cylinder.
The external diameter 0.6-2mm of hydrophobic hollow fiber film, internal diameter 1-1.5mm, 0.01-0.2 μm of membrane micropore size, adjacent two
The hydrophobic hollow fiber film wire spacing of root is 4-5mm.
Further, terminal conduit is parallel with the crossbeam of the top is fixed together；Gas distribution pipe (4) is parallel with the crossbeam of lowermost end
It is fixed together.
The preparation method of hydrophobic membrane aerator, it is characterised in that comprise the following steps：First by hydrophobic hollow fiber
One end of film wire (3) uniformly after arrangement, is put into a terminal casting groove (6), injects fluid sealant so that hydrophobic hollow fiber
Film wire (3) fixing seal is in terminal casting groove (6), then the side of terminal conduit is cut out into one and casts groove (6) outside with terminal
Side size identical cell body, the terminal casting groove for having secured hydrophobic hollow fiber film wire (3) is put into this cell body, used
Terminal casting groove (6) is fixed and sealed with terminal conduit (1) by fluid sealant；The other end of hydrophobic hollow fiber film wire (3) is equal
After even arrangement, it is put into top casting groove (7), injects fluid sealant so that hydrophobic hollow fiber film wire (3) fixing seal is beginning
In end casting groove (7), after gelling to be sealed is solid, with knife cutting sealing glue, the tube chamber up to exposing hollow fiber film thread (3),
Untill exactly getting through hydrophobic hollow fiber film wire (3) afterwards, then by the side of gas distribution pipe (4) cut out one with top cast groove
(7) outside size identical cell body, the top casting groove (7) for having secured hydrophobic hollow fiber film wire (3) is put into this
In cell body, top casting groove (7) is fixed and sealed with gas distribution pipe (4) with fluid sealant；
The upper end of side relative vertical beam A and vertical beam B has a cuboid groove, groove lower end connection one and half
Circular groove, the width of cuboid groove, the diameter of semi-circular recesses are identical with the diameter dimension of terminal conduit, by terminal conduit
It is pulled to from cuboid groove at the semi-circular recesses of lower section, can be so that the terminal conduit of component to be fixed, and this form is more
Flexibly, it is easy to disassemble.
The lower end of side relative vertical beam C and vertical beam D or the relative side of vertical beam A and vertical beam B have one it is rectangular
Body groove, groove upper end connect a semicircular groove, and the diameter of semi-circular recesses, the width of cuboid groove are and gas distribution
The diameter dimension of pipe is identical；The curtain type film assembly horizontal stroke between the crossbeam and vertical beam C and vertical beam D between vertical beam A and vertical beam B successively
Detoured between beam, form the warp architecture of space folding formula；Finally by gas distribution pipe from vertical beam C and vertical beam D relative side or
The cuboid groove of the lower end of side relative vertical beam A and vertical beam B is pulled at semi-circular recesses, can be with by the gas distribution of component
Pipe is fixed, and this form is more flexible, easy to disassemble.
On gas distribution pipe (4), and the relative STH of casting groove, by air inlet pipe (8) and gas distribution pipe (4) fixing seal,
Gas distribution pipe (4) is connected with feeder.
The implementation steps of hydrophobic membrane aerator of the present invention are to open feeder, and gas phase initially enters air inlet
Manage (8), enter back into gas distribution pipe (4), by gas distribution pipe (4) by gas phase dispersion in the hydrophobic hollow fiber film wire (3), gas phase
Under the promotion of film both sides partial pressure difference, spread by membrane micropore, entered in the form of micro-bubble in liquid phase, a part and liquid phase
In hydrone collision rift switch to dissolved state, another part is not in time for collision then and just overflows the water surface.
It is an advantage of the invention that on the one hand, " snakelike " configuration is presented in curtain type film assembly in aerator so that device is full of
Aeration tank, bubble are dispersed in whole aeration tank, dramatically avoid aeration dead angle, improve effective utilization of gas
Efficiency.On the other hand, the hydrophobicity of hydrophobic membrane in itself prevents water from wetting film, gassy, therefore pass all the time in membrane micropore
Matter resistance can be ignored, and system can realize have bubble to be aerated in relatively low operating pressure, and energy consumption is relatively low.In addition, dredge
The surface distributed of water-based hollow-fibre membrane the micropore that diameter is about 0.01-0.2 μm, therefore the bubble diffused out by fenestra
Very small, micro-bubble improves mass transfer rate, adds the contact probability of gas phase and liquid phase, improves effective utilization of gas
Rate.
Figure of description
Fig. 1 is the schematic diagram that hydrophobic membrane aerator is laid；
Fig. 2 is film frame schematic diagram；
Fig. 3 is hydrophobic hollow fiber curtain type membrane component top view；
1 terminal conduit, 2 crossbeams, 3 hydrophobic hollow fiber film wires, 4 gas distribution pipes, 5 bottom crossbeams, 6 terminals casting groove, 7 in figure
Top casting groove, 8 air inlet pipe, 9 film frame vertical beam A, 10 film frame vertical beam B, 11 film frame vertical beam C, 12 film frame vertical beam D.
Embodiment
With reference to embodiment, the present invention will be further described, but the present invention is not limited to following examples.
Hydrophobic membrane aerator mainly includes film frame, crossbeam, terminal conduit, curtain type film assembly, gas distribution pipe, air inlet pipe；Film frame
Including at least the vertical beam 9-12 of four parallel uprights, the both ends of terminal conduit 1 are separately fixed at two adjacent vertical beam A and vertical beam B
Top, between vertical beam A and vertical beam B also fix multiple crossbeams 2, also fixed between two adjacent vertical beam C and vertical beam D in addition
Multiple crossbeams, the crossbeam position between crossbeam and vertical beam C and vertical beam D between vertical beam A and vertical beam B interlock；In vertical beam A and vertical beam
Gas distribution pipe 4 is fixed between B bottom or vertical beam C and vertical beam D bottom, gas distribution pipe connects with air inlet pipe 8；Curtain type membrane group
Part is the curtain structure of multiple 3 spaced and parallel compositions of hydrophobic hollow fiber film wire, and the surface of hydrophobic hollow fiber film wire is set
There is microcellular structure；One end of curtain type film assembly is fixed in terminal conduit, and the other end is fixed on gas distribution pipe, and hydrophobicity is hollow
Fiber film wire connects with gas distribution pipe；Curtain type film assembly is successively between the crossbeam and vertical beam C and vertical beam D between vertical beam A and vertical beam B
Crossbeam between detoured, formed space folding formula warp architecture.It is specifically shown in Fig. 1-3 detailed construction.
Using the high ammonia-nitrogen wastewater that this hydrophobic membrane aerator concentration for the treatment of is 4980mg/L.Specific implementation step is：
(1) high ammonia nitrogen stoste is located in advance by a series of early stages such as air supporting, disc filter, cartridge filter or milipore filters
After science and engineering skill, it is less than 5ppm into the water oil content in film aerating system, SS is less than 10mg/L, and surface tension should be greater than 60Mn/
m。
(2) high ammonia-nitrogen wastewater after step (1) processing is passed through the good cylinder membranes aeration tank of seal, aeration tank bottom
The a diameter of 1.2m in face, a height of 2m, dischargeable capacity 2m3.Hydrophobic membrane aerator is placed in aeration tank, the top pipe of curtain type film assembly
It is fixed at a crossbeam of film frame lower end, distance of this crossbeam apart from aeration tank bottom is 0.3m.The installation of aeration tank top has
The suction tube of air-extraction function, bottom are fit into the outlet pipe of next processing unit.
(3) film aeration stripping removes ammonia step：Open feeder, blow rate required 1000m3/ h, blast 50kPa, gas
It can be diffused into the form of ultra micro minute bubbles in aqueous phase by hydrophobic membrane aerator, strengthen the mass transfer area of gas-liquid, gas-liquid
Mutually fully after contact, the free ammonia dissolved in water passes through gas-liquid interface, and backward gas phase transfer is parsed from waste water, so as to
Reach the effect of removing part ammonia.The system abjection time is 1h, and raw water ammonia nitrogen concentration is 4980mg/L, and water outlet ammonia nitrogen concentration is
1494-1992mg/L, removal efficiency 60%-70%.Exhaust tube at the top of aeration tank, the ammonia that stripping is gone out take entrance away
Sulfuric acid absorption system, the waste water after the processing of this process section enter next stage membrane absorption technology by the outlet pipe of aeration tank bottom surface,
Further denitrogenation processing.
Claims (6)
1. a kind of hydrophobic membrane aerator, it is characterised in that mainly include film frame, crossbeam, terminal conduit, curtain type film assembly, gas distribution
Pipe, air inlet pipe；Film frame comprises at least the vertical beam of four parallel uprights, and the both ends of terminal conduit are separately fixed at two adjacent vertical beams
A and vertical beam B top, multiple crossbeams are also fixed between vertical beam A and vertical beam B, in addition two adjacent vertical beam C and vertical beam D it
Between also fix multiple crossbeams, the crossbeam position between crossbeam and vertical beam C and vertical beam D between vertical beam A and vertical beam B interlocks；Perpendicular
Gas distribution pipe is fixed between beam A and vertical beam B bottom or between vertical beam C and vertical beam D bottom, gas distribution pipe connects with air inlet pipe；
Curtain type film assembly is the curtain structure of multiple spaced and parallel compositions of hydrophobic hollow fiber film wire, hydrophobic hollow fiber film wire
Surface is provided with microcellular structure；One end of curtain type film assembly is fixed in terminal conduit, and the other end is fixed on gas distribution pipe, and hydrophobic
Property hollow fiber film thread connects with gas distribution pipe；Curtain type film assembly the crossbeam between vertical beam A and vertical beam B and vertical beam C and erects successively
Detoured between crossbeam between beam D, form the warp architecture of space folding formula.
2. according to a kind of hydrophobic membrane aerator described in claim 1, it is characterised in that film frame is cuboid framework structure,
The distance between vertical beam A and vertical beam B are length, and vertical beam A length is height, is width perpendicular to the direction of length and height；
It is long：It is wide：The ratio between height is 1：(0.6~1)：There have been three pin of fixation (1.2~1.8), the bottom of 4 sides of cuboid
Frame.
3. according to a kind of hydrophobic membrane aerator described in claim 1, it is characterised in that outside hydrophobic hollow fiber film wire
Footpath is 0.6-2mm, and internal diameter 1-1.5mm, membrane micropore size is 0.01-0.2 μm.
4. according to a kind of hydrophobic membrane aerator described in claim 1, it is characterised in that the hollow fibre of hydrophobicity of adjacent two
It is 4-5mm to tie up film wire spacing.
5. according to a kind of hydrophobic membrane aerator described in claim 1, it is characterised in that the crossbeam of terminal conduit and the top is put down
Row is fixed together；Gas distribution pipe (4) is parallel with the crossbeam of lowermost end to be fixed together.
6. prepare the method for the hydrophobic membrane aerator described in claim any one of 1-5, it is characterised in that including following step
Suddenly：First by behind one end of hydrophobic hollow fiber film wire (3) uniformly arrangement, it is put into a terminal casting groove (6), injection is close
Sealing so that hydrophobic hollow fiber film wire (3) fixing seal is cut in terminal casting groove (6), then by the side of terminal conduit
One and size identical cell body on the outside of terminal casting groove (6) is gone out, at the end for having secured hydrophobic hollow fiber film wire (3)
End casting groove is put into this cell body, and terminal casting groove (6) is fixed and sealed with terminal conduit (1) with fluid sealant；In hydrophobicity
The other end of hollow fiber film wire (3) uniformly after arrangement, is put into top casting groove (7), injects fluid sealant so that hydrophobicity is hollow
Fiber film wire (3) fixing seal is in top casting groove (7), after gelling to be sealed is solid, with knife cutting sealing glue, until in exposing
The tube chamber of hollow fiber film wire (3), that is, untill getting through hydrophobic hollow fiber film wire (3) afterwards, then the side by gas distribution pipe (4)
One and size identical cell body on the outside of top casting groove (7) are cut out, having secured hydrophobic hollow fiber film wire (3)
Top casting groove (7) be put into this cell body, with fluid sealant by top cast groove (7) with gas distribution pipe (4) fixation and seal；
The upper end of side relative vertical beam A and vertical beam B has a cuboid groove, and groove lower end connects a semicircle
Groove, the width of cuboid groove, the diameter of semi-circular recesses are identical with the diameter dimension of terminal conduit, by terminal conduit from length
Cube groove is pulled at the semi-circular recesses of lower section, and the terminal conduit of component is fixed；
It is recessed that the lower end of side relative vertical beam C and vertical beam D or the relative side of vertical beam A and vertical beam B has a cuboid
Groove, groove upper end connect a semicircular groove, the diameter of semi-circular recesses, the width of cuboid groove with gas distribution pipe
Diameter dimension is identical；Curtain type film assembly is successively between the crossbeam between the crossbeam and vertical beam C and vertical beam D between vertical beam A and vertical beam B
Detoured, form the warp architecture of space folding formula；Finally by gas distribution pipe from vertical beam C and vertical beam D relative side or vertical beam A
The cuboid groove of the lower end of the side relative with vertical beam B is pulled at semi-circular recesses, and the gas distribution pipe of component is fixed；
On gas distribution pipe (4), a STH relative with casting groove, by air inlet pipe (8) and gas distribution pipe (4) fixing seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610133233.8A CN105600918B (en) | 2016-03-09 | 2016-03-09 | A kind of hydrophobic membrane aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610133233.8A CN105600918B (en) | 2016-03-09 | 2016-03-09 | A kind of hydrophobic membrane aerator |
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| CN105600918A CN105600918A (en) | 2016-05-25 |
| CN105600918B true CN105600918B (en) | 2018-03-16 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059235A (en) * | 2017-12-30 | 2018-05-22 | 武汉艾科滤膜技术有限公司 | A kind of production method of the curtain type membrane with aerator |
| CN109437398A (en) * | 2018-11-29 | 2019-03-08 | 南京博知源环境科技有限公司 | A kind of doughnut aeration film sewage treatment system |
| CN111252932B (en) * | 2018-11-30 | 2022-07-05 | 广州中国科学院先进技术研究所 | Membrane absorption deamination method and system based on direct contact type micropore aeration reinforcement |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201056511Y (en) * | 2007-01-24 | 2008-05-07 | 中国矿业大学 | Integrated aeration type film component |
| CN105293687A (en) * | 2015-11-27 | 2016-02-03 | 湖北君集水处理有限公司 | Aeration device for high-concentration suspended matter submerged membrane component |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9278317B2 (en) * | 2011-12-09 | 2016-03-08 | Lotte Chemical Corporation | Hollow fiber membrane module with miniskeins in miniheaders having a zig-zag configuration |
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2016
- 2016-03-09 CN CN201610133233.8A patent/CN105600918B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201056511Y (en) * | 2007-01-24 | 2008-05-07 | 中国矿业大学 | Integrated aeration type film component |
| CN105293687A (en) * | 2015-11-27 | 2016-02-03 | 湖北君集水处理有限公司 | Aeration device for high-concentration suspended matter submerged membrane component |
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