CN105600918A - Hydrophobic membrane aeration device - Google Patents
Hydrophobic membrane aeration device Download PDFInfo
- Publication number
- CN105600918A CN105600918A CN201610133233.8A CN201610133233A CN105600918A CN 105600918 A CN105600918 A CN 105600918A CN 201610133233 A CN201610133233 A CN 201610133233A CN 105600918 A CN105600918 A CN 105600918A
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- vertical beam
- groove
- hollow fiber
- hydrophobic
- gas distribution
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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
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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
- 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
Abstract
The invention discloses a hydrophobic membrane aeration device and belongs to the technical field of aeration devices. The hydrophobic membrane aeration device mainly comprises a membrane frame, a cross beam, a terminal pipe, a curtain type membrane assembly, an air distribution pipe and an air inlet pipe. The curtain type membrane assembly in the aeration device is of a bent structure in a space folding type, in other words, the curtain type membrane assembly in the aeration device is of an S-shaped structure, an air phase firstly enters the air inlet pipe and then enters the air distribution pipe and is dispersed in hydrophobic hollow fiber membrane filaments through the air distribution pipe, under operating pressure, the air phase is dispersed through membrane micro holes under pushing of differential pressure on the two sides and enters a liquid phase in a micro bubble mode, part of the air phase collides with water molecules in the liquid phase and is converted into a dissolution state, and the other part of the air phase overflows from the water without the time for collision.
Description
Technical field
The invention belongs to aerator technical field, relate in particular to a kind of hydrophobic membrane aerator.
Background technology
Aerator is device indispensable in biological process of wastewater treatment, particularly in activated sludge process, and aerationDevice seems most important especially.
The aerator of current extensive use is mainly divided into blast aeration, mechanical aeration and associating aeration. Wherein machineThe equipment of tool aeration mainly contains surface aeration machine, rotating brush type aerator etc., it have reliability and durability, safeguard simpleAdvantage, but efficiency is low, power consumption is large; Blast aeration equipment mainly contains perforated pipe, fixed micro-hole aeratorDeng. Blast aeration is than mechanical aeration, and its oxygen-transfer efficiency is high, power consumption is low, but when maintenance need byWater emptying in structures, safeguards complicated.
In order to overcome, in traditional aerator, oxygen utilization rate is low, power consumption large, safeguard a series of the asking such as complicatedTopic, this patent provides a kind of gas permeability hydrophobic microporous membrane that adopts as the aerator that passes oxygen medium. ThisAerator utilizes the hydrophobicity of hydrophobic microporous membrane self, and water can not infiltrate film, and membrane micropore is gassy all the time,Oxygen is actually the diffusion transmittance process in membrane micropore gas phase by the process of membranous wall, and its membrane resistance also can be ignoredDisregard, therefore it has higher gas transfer efficiency and lower power consumption.
In recent years, along with membrane material is at the extensive use of every field and the continuous progress of membrane technology self, filmProcessing and membrane module manufacturing cost reduced year by year, hydrophobic hollow fiber film aerator will have wide sending outExhibition prospect.
Application number is 201410322384.9 patent of invention proposition a kind of " milipore filter aeration board and method thereof ",This invention utilizes a large amount of micropores on hollow cellulose membrane tube wall, makes milipore filter aeration board, to be applied to aerationDiffusion field. But this aeration board is after the tiling of doughnut membranogen, to make, to be similar to curtain formula hollow-fibre membrane groupThe configuration of part, this configuration in actual applications, may, because of the limitation of aeration film panel configuration, make aerationPlate can not be full of in whole container, produces the inhomogeneous phenomenon of aeration.
Summary of the invention
The present invention has overcome the defect of existing aerator, and a kind of hydrophobic membrane aerator and preparation method are provided.
Hydrophobic membrane aerator of the present invention, is characterized in that, mainly comprises film frame, crossbeam, terminal conduit, curtainFormula membrane module, gas distribution pipe, air inlet pipe; Film frame at least comprises the vertical beam of four parallel upright, the two ends of terminal conduitBe separately fixed at the top of two adjacent vertical beam A and vertical beam B, also fixing between vertical beam A and vertical beam BMultiple crossbeams, also fix multiple crossbeams between other two adjacent vertical beam C and vertical beam D, vertical beam A and perpendicularCrossbeam position between crossbeam between beam B and vertical beam C and vertical beam D is staggered; At vertical beam A and vertical beam BBetween bottom or between vertical beam C and the bottom of vertical beam D, be fixed with gas distribution pipe, gas distribution pipe is communicated with air inlet pipe;Curtain type film assembly is the curtain formula structure of multiple hydrophobic hollow fiber film silk spaced and parallel compositions, hydrophobicity hollow fibreThe surface of dimension film silk is provided with microcellular structure; One end of curtain type film assembly is fixed in terminal conduit, and the other end is fixed onOn gas distribution pipe, and hydrophobic hollow fiber film silk is communicated with gas distribution pipe; Curtain type film assembly is successively at vertical beam AAnd detour between crossbeam between crossbeam and vertical beam C and vertical beam D between vertical beam B, form space foldingThe warp architecture of formula.
Film frame is cuboid frame structure, and the distance between vertical beam A and vertical beam B is length, the length of vertical beam AFor height, be width perpendicular to the direction of length and height; Long: wide: the ratio of height is 1:(0.6～1):
(1.2～1.8), all there has been the tripod of fixation the bottom of 4 sides of cuboid. Terminal conduit is cylinderShape.
The external diameter 0.6-2mm of hydrophobic hollow fiber film, internal diameter 1-1.5mm, membrane micropore size 0.01-0.2 μ m, phaseThe hydrophobic hollow fiber film silk spacing of adjacent two is 4-5mm.
Further, terminal conduit and parallel being fixed together of crossbeam topmost; Gas distribution pipe (4) and lowermost endCrossbeam is parallel to be fixed together.
The preparation method of hydrophobic membrane aerator, is characterized in that, comprises the following steps: first by hydrophobicityAfter evenly arranging in one end of hollow fiber film silk (3), put into a terminal casting groove (6), inject fluid sealant,Hydrophobic hollow fiber film silk (3) fixing seal is cast in groove (6) in terminal, then by one of terminal conduitSide cuts out a cell body identical with terminal casting groove (6) outside size, having fixed in hydrophobicityThe terminal casting groove of hollow fiber film silk (3) is put into this cell body, with fluid sealant by terminal cast groove (6) with eventuallyEnd pipe (1) is fixed and sealing; The other end of hydrophobic hollow fiber film silk (3) is put into after evenly arrangingIn top casting groove (7), inject fluid sealant, hydrophobic hollow fiber film silk (3) fixing seal is being begunIn end casting groove (7), after gelling to be sealed is solid, with cutter cutting sealing glue, until expose hollow fiber film thread(3) tube chamber, till namely getting through after hydrophobic hollow fiber film silk (3), then by gas distribution pipe (4)A side cut out a cell body identical with top casting groove (7) outside size, hydrophobic having fixedProperty hollow fiber film thread (3) top casting groove (7) put into this cell body, with fluid sealant by the top groove of casting(7) and sealing fixing with gas distribution pipe (4);
The upper end of the side that vertical beam A is relative with vertical beam B has a cuboid groove, and groove lower end connectsConnect a semicircular groove, the width of cuboid groove, the diameter of semi-circular recesses all with the diameter of terminal conduitMeasure-alike, the semi-circular recesses below terminal conduit is pulled to from cuboid groove, just can be by the end of assemblyEnd pipe is fixing, and this form is more flexible, is convenient to dismounting.
The lower end of the side that the side that vertical beam C is relative with vertical beam D or vertical beam A are relative with vertical beam B hasA cuboid groove, groove upper end connects a semicircular groove, the diameter of semi-circular recesses, cuboidThe width of groove is all identical with the diameter dimension of gas distribution pipe; Curtain type film assembly successively vertical beam A and vertical beam B itBetween crossbeam and crossbeam between vertical beam C and vertical beam D between detour, form the bending knot of space folding formulaStructure; Finally by gas distribution pipe from the vertical beam C side relative with vertical beam D or the vertical beam A side relative with vertical beam BThe cuboid groove of lower end be pulled to semi-circular recesses place, just the gas distribution pipe of assembly can be fixed, and thisThe form of kind is more flexible, is convenient to dismounting.
Upper at gas distribution pipe (4), relative with a casting groove STH, by air inlet pipe (8) and gas distribution pipe (4)Fixing seal, gas distribution pipe (4) is connected with feeder.
The implementation step of hydrophobic membrane aerator of the present invention is, opens feeder, and first gas phase entersAir inlet pipe (8), then enter in gas distribution pipe (4), by gas distribution pipe (4) by gas phase dispersion in hydrophobicity hollowIn tunica fibrosa silk (3), gas phase, under the promotion of film both sides partial pressure difference, spreads by membrane micropore, with small gasThe form of bubble enters in liquid phase, and a part transfers dissolved state to, another part after colliding with the hydrone in liquid phaseDo not have enough time to collide and just overflow the water surface.
Advantage of the present invention is that on the one hand, in aerator, curtain type film assembly presents " snakelike " configuration, makesDevice is full of aeration tank, and bubble is dispersed in whole aeration tank, has avoided dramatically aeration dead angle,Improve effective utilization ratio of gas. On the other hand, the hydrophobicity of hydrophobic membrane itself makes the water can not wetting film,All the time gassy in membrane micropore, therefore resistance to mass tranfer is negligible, and system can be pressed in lower operationPower realizes bubble aeration, and energy consumption is relatively low. In addition, the surface distributed of hydrophobic hollow fiber film diameterFor the micropore of 0.01-0.2 μ m, the bubble therefore diffusing out by fenestra is very small, and micro-bubble has improvedMass transfer rate, has increased the contact probability of gas phase and liquid phase, has improved the effective rate of utilization of gas.
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 silks, 4 gas distribution pipes, 5 bottom crossbeams, 6 in figureTerminal casting groove, 7 top casting grooves, 8 air inlet pipe, 9 film frame vertical beam A, 10 film frame vertical beam B, 11 film framvesVertical beam C, 12 film frame vertical beam D.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following examples.
Hydrophobic membrane aerator mainly comprises film frame, crossbeam, terminal conduit, curtain type film assembly, gas distribution pipe, air inletPipe; Film frame at least comprises the vertical beam 9-12 of four parallel upright, and the two ends of terminal conduit 1 are separately fixed at two phasesMultiple crossbeams 2 are also fixed, in addition in adjacent vertical beam A and the top of vertical beam B between vertical beam A and vertical beam BBetween two adjacent vertical beam C and vertical beam D, also fix multiple crossbeams, the crossbeam between vertical beam A and vertical beam BAnd the crossbeam position between vertical beam C and vertical beam D is staggered; Between vertical beam A and the bottom of vertical beam B or vertical beamBetween the bottom of C and vertical beam D, be fixed with gas distribution pipe 4, gas distribution pipe is communicated with 8 with air inlet pipe; Curtain type film assembly isThe curtain formula structure of multiple hydrophobic hollow fiber film silk 3 spaced and parallel compositions, the table of hydrophobic hollow fiber film silkFace 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 silk is communicated with gas distribution pipe; Curtain type film assembly successively vertical beam A and vertical beam B itBetween crossbeam and crossbeam between vertical beam C and vertical beam D between detour, form the bending knot of space folding formulaStructure. Specifically see the detailed structure of Fig. 1-3.
Apply the high ammonia-nitrogen wastewater that this hydrophobic membrane aerator concentration for the treatment of is 4980mg/L. Concrete implementation stepFor:
(1) high ammonia nitrogen stoste is through a series of early stages such as air supporting, disc filter, cartridge filter or milipore filtersAfter pretreating process, enter water oil content in film aerating system lower than 5ppm, SS is lower than 10mg/L, tableSurface tension should be greater than 60Mn/m.
(2) step (1) high ammonia-nitrogen wastewater after treatment is passed into the cylinder membranes aeration tank that seal is good, aerationBottom surface, pond diameter is 1.2m, and height is 2m, and dischargeable capacity is 2m3. Hydrophobic membrane aerator is placed in aeration tank,The top pipe of curtain type film assembly is fixed on a crossbeam place of film frame lower end, and this crossbeam is apart from the distance of bottom, aeration tank0.3m. The suction tube with air-extraction function is installed on top, aeration tank, and bottom is fit into next processing unitOutlet pipe.
(3) film aeration stripping removes ammonia step: open feeder, the blow rate required is 1000m3/ h, blast is 50kPa,Gas can pass through hydrophobic membrane aerator, diffuses in water with the form of ultra micro minute bubbles, strengthening gas-liquidMass transfer area, after gas-liquid fully contacts mutually, the free ammonia dissolving in water, through gas-liquid interface, is separated from waste waterSeparate out backward gas phase and shift, thereby reach the effect that removes part ammonia. It is 1h that system is deviate from the time, former waterAmmonia nitrogen concentration is 4980mg/L, and water outlet ammonia nitrogen concentration is 1494-1992mg/L, and removal efficiency is 60%-70%.Be positioned at the exhaust tube at top, aeration tank, the ammonia that stripping is gone out is taken the sulfuric acid absorption system that enters away, this process section placeWaste water after reason enters next stage film absorption technique through the outlet pipe of bottom surface, aeration tank, further denitrogenation processing.
Claims (6)
1. a hydrophobic membrane aerator, is characterized in that, mainly comprises film frame, crossbeam, terminal conduit, curtain type film assembly, gas distributionPipe, air inlet pipe; Film frame at least comprises the vertical beam of four parallel upright, and the two ends of terminal conduit are separately fixed at two adjacent vertical beamsMultiple crossbeams are also fixed in the top of A and vertical beam B between vertical beam A and vertical beam B, other two adjacent vertical beam C and perpendicularBetween beam D, also fix multiple crossbeams, the crossbeam position between the crossbeam between vertical beam A and vertical beam B and vertical beam C and vertical beam DStaggered; Between vertical beam A and the bottom of vertical beam B or between vertical beam C and the bottom of vertical beam D, be fixed with gas distribution pipe, gas distribution pipeBe communicated with air inlet pipe; Curtain type film assembly is the curtain formula structure of multiple hydrophobic hollow fiber film silk spaced and parallel compositions, in hydrophobicityThe surface of hollow fiber film silk 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 pipeUpper, and hydrophobic hollow fiber film silk is communicated with gas distribution pipe; Curtain type film assembly is the crossbeam between vertical beam A and vertical beam B successivelyAnd between the crossbeam between vertical beam C and vertical beam D, detour, form the warp architecture of space folding formula.
2. according to a kind of hydrophobic membrane aerator claimed in claim 1, it is characterized in that, film frame is cuboid frame structure, perpendicularDistance between beam A and vertical beam B is for long, and the length of vertical beam A is high, is width perpendicular to the direction of length and height;Long: wide: the ratio of height is 1:(0.6～1): (1.2～1.8), all there has been the tripod of fixation the bottom of 4 sides of cuboidFrame.
3. according to a kind of hydrophobic membrane aerator claimed in claim 1, it is characterized in that, the external diameter of hydrophobic hollow fiber film silk is0.6-2mm, internal diameter is 1-1.5mm, membrane micropore size is 0.01-0.2 μ m.
4. according to a kind of hydrophobic membrane aerator claimed in claim 1, it is characterized in that the hydrophobic hollow fiber film of adjacent twoSilk spacing is 4-5mm.
5. according to a kind of hydrophobic membrane aerator claimed in claim 1, it is characterized in that, terminal conduit is parallel solid with crossbeam topmostFix on together; Parallel being fixed together of crossbeam of gas distribution pipe (4) and lowermost end.
6. the method for the hydrophobic membrane aerator described in preparation claim 1-5 any one, is characterized in that, comprises the following steps: headAfter first evenly being arranged in one end of hydrophobic hollow fiber film silk (3), put into a terminal casting groove (6), inject sealingGlue, makes hydrophobic hollow fiber film silk (3) fixing seal cast in groove (6) in terminal, then by a side cutting of terminal conduitGo out a cell body identical with terminal casting groove (6) outside size, having fixed hydrophobic hollow fiber film silk (3)Terminal casting groove is put into this cell body, with fluid sealant by terminal groove (6) the fixing and sealing with terminal conduit (1) of casting; HydrophobicProperty hollow fiber film thread (3) the other end evenly arrange after, put into top casting groove (7), inject fluid sealant, make to dredgeWater-based hollow fiber film thread (3) fixing seal is cast in groove (7) at top, after gelling to be sealed is solid, and with cutter cutting sealing glue,Until expose the tube chamber of hollow fiber film thread (3), till namely getting through after hydrophobic hollow fiber film silk (3), then by clothOne side of tracheae (4) cuts out a cell body identical with top casting groove (7) outside size, having fixed hydrophobicityThe top casting groove (7) of hollow fiber film thread (3) is put into this cell body, with fluid sealant by top cast groove (7) and gas distribution pipe(4) fixing and sealing;
The upper end of the side that vertical beam A is relative with vertical beam B has a cuboid groove, and groove lower end connects a semicircleGroove, the width of cuboid groove, the diameter of semi-circular recesses are all identical with the diameter dimension of terminal conduit, by terminal conduit from lengthSide's body groove is pulled to the semi-circular recesses place of below, and the terminal conduit of assembly is fixed;
The lower end of the side that the side that vertical beam C is relative with vertical beam D or vertical beam A are relative with vertical beam B has a cuboidGroove, groove upper end connects a semicircular groove, and the diameter of semi-circular recesses, the width of cuboid groove are all and gas distribution pipeDiameter dimension identical; Curtain type film assembly is successively between the crossbeam between vertical beam A and vertical beam B and vertical beam C and the vertical beam DBetween crossbeam, detour, form the warp architecture of space folding formula; Finally by gas distribution pipe from the vertical beam C side relative with vertical beam DOr the cuboid groove of the lower end of the vertical beam A side relative with vertical beam B is pulled to semi-circular recesses place, the gas distribution pipe of assembly is solidFixed;
Upper at gas distribution pipe (4), relative with a casting groove STH, by air inlet pipe (8) and gas distribution pipe (4) fixing seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN105600918A (en) | 2016-05-25 |
| CN105600918B CN105600918B (en) | 2018-03-16 |
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| CN201610133233.8A Active CN105600918B (en) | 2016-03-09 | 2016-03-09 | A kind of hydrophobic membrane aerator |
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Cited By (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 |
| CN111252932A (en) * | 2018-11-30 | 2020-06-09 | 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 |
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| CN201056511Y (en) * | 2007-01-24 | 2008-05-07 | 中国矿业大学 | Integrated aeration type film component |
| US20130146518A1 (en) * | 2011-12-09 | 2013-06-13 | Daniel Eumine SUK | Hollow fiber membrane module with miniskeins in miniheaders having a zig-zag configuration |
| 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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2016
- 2016-03-09 CN CN201610133233.8A patent/CN105600918B/en active Active
Patent Citations (3)
| 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 |
| US20130146518A1 (en) * | 2011-12-09 | 2013-06-13 | Daniel Eumine SUK | Hollow fiber membrane module with miniskeins in miniheaders having a zig-zag configuration |
| 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 |
Cited By (4)
| 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 |
| CN111252932A (en) * | 2018-11-30 | 2020-06-09 | 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 |
| 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 |
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| CN105600918B (en) | 2018-03-16 |
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