CN100545096C - The large-flux low-pressure membrane module that is used for sewage disposal MBR technology - Google Patents
The large-flux low-pressure membrane module that is used for sewage disposal MBR technology Download PDFInfo
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- CN100545096C CN100545096C CNB2008100520617A CN200810052061A CN100545096C CN 100545096 C CN100545096 C CN 100545096C CN B2008100520617 A CNB2008100520617 A CN B2008100520617A CN 200810052061 A CN200810052061 A CN 200810052061A CN 100545096 C CN100545096 C CN 100545096C
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- membrane module
- membrane
- diaphragm
- lamina membranacea
- film
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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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Abstract
The invention provides the large-flux low-pressure membrane module that is used for sewage disposal MBR technology, this assembly is to be formed by a plurality of membrane combination, and described single diaphragm includes a pair of lamina membranacea, and the aperture of template is the 1-50 micron, distance is 4-6mm between the lamina membranacea, is supported formation by the film framework.Described a plurality of diaphragm is parallel to each other and is fixed in the integral body that the formation membrane module is gone up in the membrane module support, is provided with posticum on described diaphragm-operated top, and posticum is communicated with header, is provided with the diffuser of supplying gas to membrane module in the bottom of membrane module.Effect of the present invention is to make in the MBR sewage treatment process membrane flux improve 1-3 doubly, can reduce the quantity of membrane module and support equipment thereof greatly, and rely on the gravity water outlet fully, facility investment saves 60%, energy consumption reduces by 50%, and the pollution speed that can effectively slow down film, reduces working cost.Water outlet can reach the one-level A standard among the present emission standard GB 18918-2002 of sewage work of China, and the suspended solid index in the water outlet is below 8mg/L.
Description
Technical field
The present invention relates to a kind of parts of waste disposal plant, particularly a kind of large-flux low-pressure membrane module that is used for sewage disposal MBR technology.
Background technology
Membrane bioreactor (Membrane Bioreactor, be called for short MBR) be a kind of new and effective wastewater treatment and reuse technology of bringing into use the nineties in last century with membrane separation technique and the combination of traditional wastewater biological treatment, obtain extensive concern at international water-treatment technology field in recent years.MBR technology utilization membrane separation technique replaces the second pond in the traditional activated sludge process, active sludge and larger molecular organics matter are held back, not only can effectively realize solid-liquid separation, and improved concentration of activated sludge in the reactor widely, thereby greatly improve effluent quality, and dwindled the volume of whole reactor.Compare with traditional technology, MBR technology has advantages such as floor space is little, effluent quality good, sludge yield is little.But along with MBR The Application of Technology and popularization, the defective of this technology also manifests day by day, mainly shows following aspect.
(1) in most of MBR technology, the hole of film is all below 1 micron, the filtration of sewage mainly is to force to finish by membrane pores under the effect of suction pump, film self hole is more little, the quantity of suspended substance is more little in the water outlet, but resistance suffered when filtered water is passed through film is also big more, and the swabbing pressure that needs is also big more, and the energy of consumption is also high more.
(2) because the hole of the film that uses in the present MBR technology is less, (membrane flux Flux has only 0.2～0.5m usually to have limited the filtrable water yield of unit membrane surface-area to a great extent
3/ m
2D), thereby cause the quantity of the membrane module that uses in the technology bigger, increased facility investment, limited the popularization and the use of MBR technology.
(3) because the sewage water filtration in the present MBR technology mainly is to finish by the pressure crown_interception of physics film, easily make film forming obstruction, need regular cleaning, that have even flushing and maintenance need be daily, increase working cost, limited popularization and the use of MBR.
(4) effluent index of MBR technology is better than the sewage disposal emission standard of each national regulation at present greatly at present.For example, the high target of China's sewage work's discharging at present is an one-level A standard, and wherein the requirement to suspended solid is 10mg/L, and in the MBR effluent index, the concentration of suspended solid is basically all less than 1mg/L.
The defective of MBR technology is summed up: water outlet is excellent excessively, invests excessively, and energy consumption is too high.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the purpose of this invention is to provide the large-flux low-pressure membrane module that is used for sewage disposal MBR technology, can reach under the prerequisite of the highest standard (one-level A standard) among the present emission standard GB 18918-2002 of sewage work of China in effluent index, investment only is 40% of present MBR technological investment, and energy consumption only is 50% of a present MBR technology energy consumption.
For achieving the above object, technical solution of the present invention provides the large-flux low-pressure membrane module that is used for sewage disposal MBR technology, wherein: this assembly 16 is to be combined by a plurality of diaphragms 2, described single diaphragm 2 includes one-to-many pore membrane plate 3, the aperture of template 3 is the 1-50 micron, distance is 4-6mm between the lamina membranacea 3, is supported formation by film framework 4.Described a plurality of diaphragm 2 is parallel to each other and is fixed in the integral body that membrane module supports formation membrane module 16 on 7, is provided with posticum 1 on the top of described diaphragm 2, and posticum 1 is communicated with header 6, is provided with the diffuser 8 of supplying gas to membrane module 16 in the bottom of membrane module 16.
Effect of the present invention is to be embodied in the following aspects:
(1) aperture of physics film provided by the present invention is 1～50 micron, the aperture of the film of present all the MBR technology producers of ratio is all big a lot, membrane flux improves 1-3 doubly, adopt the MBR technology of present technique, can reduce the quantity of membrane module and support equipment thereof greatly, facility investment only is 40% of existing MBR technology.
(2) adopt the MBR technology of present technique, not only can reduce the quantity of operational outfit, and water outlet does not need the positive action of suction pump, rely on the gravity water outlet fully, energy consumption only is 50% of existing MBR technology, and the pollution speed that can effectively slow down the physics film, reduces working cost.
(3) the MBR technology of employing present technique, filtration mechanism is different with existing MBR skill, mainly relies on attached to the physics film, and promptly the solid pollutant in the biofilm filtration sewage on lamina membranacea surface does not rely on the physics film fully.The effect in the present invention of physics film has two, and the one, as the sealing coat of sewage and filter back water; The 2nd, as the supporting layer of film surface biological layer.
(4) adopt the water outlet of the MBR of present technique can reach China's highest standard among the emission standard GB 18918-2002 of sewage work at present, i.e. one-level A standard, wherein the index of water outlet suspended solid (suspended solids is called for short SS) is below 8mg/L.
Description of drawings
Fig. 1 Fig. 2 looks side-view for single film skeleton construction master of the present invention;
Fig. 3 is a membrane module structure synoptic diagram of the present invention;
Fig. 4 is the specific embodiment of the present invention example.
Among the figure:
1, posticum 2, diaphragm 3, lamina membranacea 4, film framework
5, microbial film 6, header 7, membrane module support 8, diffuser
9, inlet channel 10, fine fack 11, denitrification pond 12, diving mixer
13, submersible pump 14, nitrification tank 15, micro-hole aerator 16, membrane module
17, variable valve 18, outlet conduit 19, return line 20, aeration blower
21, film gas blower 22, electric control gear
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the large-flux low-pressure membrane module use that is used for the MBR of sewage place technology of the present invention.When using the large-flux low-pressure membrane module to carry out the sewage disposal of MBR technology among the present invention, mainly rely on attached to the solid pollutant in the biofilm filtration sewage on lamina membranacea surface, but not the dependence lamina membranacea, lamina membranacea is in the present invention just as sealing coat and the biomembranous supporting layer of sewage with filter back water.
As shown in Figure 1, 2, 3, the large-flux low-pressure membrane module that is used for the MBR of sewage place technology of the present invention is combined by a plurality of diaphragms 2, described single diaphragm 2 includes one-to-many pore membrane plate 3, and the aperture of template 3 is the 1-50 micron, and distance is 4-6mm between the lamina membranacea 3.Supported formation by film framework 4.Described a plurality of diaphragm 2 is parallel to each other and is fixed in the integral body that membrane module supports formation membrane module 16 on 7, is provided with posticum 1 on the top of described diaphragm 2, and posticum 1 is communicated with header 6, is provided with the diffuser 8 of supplying gas to membrane module 16 in the bottom of membrane module 16.
Fig. 4 is specific embodiments of the invention.
When sewage enters fine fack 10 from inlet channel 9, enter denitrification pond 11 again.For preventing sludge settling, diving mixer 12 is installed in denitrification pond 11.Sewage behind denitrification is promoted in the nitrification tank 14 by submersible pump 13, and micro-hole aerator 15 is installed in the nitrification tank, can carry out providing when nitrated oxygen at sewage.Membrane module 16 also is installed in the nitrification tank 14, when sewage disposal, the surface growth of lamina membranacea 3 has the microbial film 5 of several micron thickness, behind sewage process microbial film 5 surface filtrations, filtered water enters in the film framework 4 through lamina membranacea 3 again, and water is at lamina membranacea 3 top hydraulic pressure (about 0.5mH after the filtration in the film framework 4
2O pressure) under the effect, enter header 6 by posticum 1.Discharge by the outlet conduit 18 that links to each other with header 6 then.Water regulating valve door 17 is installed on outlet conduit 18, can controls the water flow (membrane flux) of whole membrane module 16 by water regulating valve door 17.
When the aperture of lamina membranacea 3 was the 20-40 micron, membrane module 16 can reach very high flux, and can generate stable microbial film 5 on lamina membranacea 3, the effectively catching solid pollutant.Between nitrification tank 14 and the denitrification pond 11, a return line 19 is installed, its effect is the water after nitrated to be back to carry out denitrification in the denitrification pond 11.Gas blower 20 is aeration gas blowers, is mainly micro-hole aerator 15 air is provided.Gas blower 21 is gas blowers of diffuser 8 usefulness on the membrane module 16, be mainly membrane module 16 the gas air that looses is provided,, can regulate the shearing force of air film surface biological film by regulating the tolerance and the pressure of air, thereby regulate biomembranous thickness, reach the purpose of the filtration capacity of regulating film.Electric control gear 22 is the Controlling System of whole device.
Claims (2)
1, a kind of large-flux low-pressure membrane module that is used for sewage disposal MBR technology, it is characterized in that: this assembly (16) is to be combined by a plurality of diaphragms (2), described single diaphragm (2) includes one-to-many pore membrane plate (3), the aperture of template (3) is the 1-50 micron, lamina membranacea is provided with certain interval between (3), supported formation by film framework (4), be attached with one deck microbial film (5) on the outside of lamina membranacea (3), described a plurality of diaphragm (2) is parallel to each other and is fixed in integral body that formation membrane module (16) is gone up in membrane module support (7), be provided with posticum (1) on the top of described diaphragm (2), posticum (1) is communicated with header (6), is provided with the diffuser (8) of supplying gas to membrane module (16) in the bottom of membrane module (16).
2, the large-flux low-pressure membrane module that is used for sewage disposal MBR technology according to claim 1 is characterized in that: be spaced apart 4-6mm between the described lamina membranacea (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100520617A CN100545096C (en) | 2008-01-14 | 2008-01-14 | The large-flux low-pressure membrane module that is used for sewage disposal MBR technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100520617A CN100545096C (en) | 2008-01-14 | 2008-01-14 | The large-flux low-pressure membrane module that is used for sewage disposal MBR technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101215025A CN101215025A (en) | 2008-07-09 |
| CN100545096C true CN100545096C (en) | 2009-09-30 |
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| CNB2008100520617A Expired - Fee Related CN100545096C (en) | 2008-01-14 | 2008-01-14 | The large-flux low-pressure membrane module that is used for sewage disposal MBR technology |
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| CN (1) | CN100545096C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801189A (en) * | 2015-05-12 | 2015-07-29 | 郭会 | Sewage treatment membrane assembly |
| CN108185823A (en) * | 2017-12-04 | 2018-06-22 | 西安工程大学 | Anti-overflow water dispenser |
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