CN1329315C - Membrane bioreactor - Google Patents
Membrane bioreactor Download PDFInfo
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- CN1329315C CN1329315C CNB2004100549833A CN200410054983A CN1329315C CN 1329315 C CN1329315 C CN 1329315C CN B2004100549833 A CNB2004100549833 A CN B2004100549833A CN 200410054983 A CN200410054983 A CN 200410054983A CN 1329315 C CN1329315 C CN 1329315C
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- sewage
- filtering layer
- membrane bioreactor
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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 present invention relates to a membrane bioreactor which comprises at least one prefiltration layer, at least one biological membrane unit and at least one disturbed flow device, wherein the prefiltration layer is provided with a plurality of first filtration holes through which sewage passes, and the biological membrane unit and the prefiltration layer are arranged at intervals. The biological membrane unit is used for attaching microorganisms to grow, the biological membrane unit has a plurality of pore spaces through which the sewage passes, a second filtration hole and a water outlet, wherein the second filtration hole is smaller than the first filtration hole. The disturbed flow device is clamped between the prefiltration layer and the biological membrane unit to disturb the sewage between the prefiltration layer and the biological film unit. The membrane bioreactor of the present invention has the advantages of high circulation quantity, convenient membrane cleaning, extended thin membrane operation period and low cost.
Description
[technical field]
The present invention relates to a kind of waste disposal plant, particularly relates to a kind of membrane bioreactor.
[background technology]
" membrane bioreactor " (Membrane Bioreactor, call MBR in the following text), it is a kind of waste disposal plant in conjunction with biological treatment and film isolation technique, at the technical of processing is originally to be covered with in microorganism (mud) reactive tank, increase the microbial film group in addition and (can be divided into external hanging type and built-in, further instruction is below arranged), make influent stream water except contacting with microorganism in the reactive tank and carrying out the decomposition reaction, and make mixed solution film by the microbial film group under enough pressure difference drives, and the treating water of generation filteration, mud then is trapped in the reactive tank fully, in other words, MBR is the second-level settling pond that replaces general biological program with film, and replaces the gravity settling process of activated sludge process with the film sepn process, thus can obtain water quality good go out flowing water.
Because having, the MBR treatment system can handle the high dense mud variation of crossing, solid-liquid separation effect is good, can reduce treatment trough volume and sludge yield ... etc. advantage, so since the eighties, existing how tame dealer develops dissimilar commercially produced products, wherein more application is arranged with Canadian ZENON company and Japanese trader KUBOTA company, ZENON film that company adopts is hollow fiber film (hollow fiber membrane), has the bigger dirty surface-area that cuts in its unit volume, KUBOTA company then adopts flat film (flat sheet membrane), its relevant patent can be seen in the U.S. the 5th, 401,400,5,482,652, patent cases such as 5,098, No. 566.
Though MBR has above-listed plurality of advantages, no matter adopt the design of hollow fiber film or flat film all non-perfect, it still has following point to produce:
One, film easily stops up: owing to must make film stop up easily in the face of formed a large amount of microorganisms of different mud and glue plumage.
Two, cost is higher: also, make that the circulation for the treatment of water is on the low side because film stops up easily, therefore can only be by increasing microbial film group quantity, with improve membrane surface area come in response to, make relatively film that cost is set is higher.
Three, cleaning is difficult for: for some film group (as the fine mems thin film of hollow), not easy cleaning, and cleaning film also can cause the loss of shutdown.
In addition, MBR according to the installation site of its film unit mainly can divide into " external hanging type " (claim not only a streaming) and " built-in " (but also claiming immerseable) two big class.As shown in Figure 1, be a kind of membrane bioreactor 1 of external hanging type, it has a film unit 102 that is installed on outside the reactive tank 101, this external hanging type membrane bioreactor 1 be with the sewage in the reactive tank 101 under the high speed flow velocity, utilize pump that sewage is pumped to this film unit 102, to carry out circulating filtration.Again as shown in Figure 2, be a kind of built-in membrane bioreactor 2, it has a film unit 202 that is installed in the reactive tank 201, this built-in membrane bioreactor 2 is to utilize from this film unit 202 inboard sewage of drawing, and make sewage pass this film unit 202 from outside to inside with negative pressure mode, and carry out the filtration of sewage.
Practice, the design loop that this external hanging type membrane bioreactor 1 adds outward in addition because of adopting groove, so take up space, and because it adopts malleation crossing current (cross-flow, promptly the mobile direction of suspension is parallel with film surface) mode to operate, therefore can relatively consume energy, though the maintenance of this external hanging type membrane bioreactor 1 is comparatively convenient, but owing to need often cleaning the easy incrustation of film in order to obtain making than high throughput, running cost is higher.On the contrary, because this built-in membrane bioreactor 2 is directly to be immersed in film in the aerator tank, except more not taking up space, and because of membrane surface area more greatly, more do not consume energy, but its circulation is lower, and need these film unit 202 shift-ins, shift out and clean, also quite inconvenience when reality is used.Obviously, external hanging type and built-in MBR respectively have its relative merits place, yet general research and improve case and still be only limited to and improve its circulation, cause process cost to reduce, this still promotes difficult main cause for MBR, and its actual emphasis that improves should focus on how to keep film surface and be difficult for by dirty stifled (fouling) under high throughput (flux), prolonging the film operational cycle, this has become the present MBR technology utmost point and has waited the problem that breaks through, solve.
[summary of the invention]
The objective of the invention is to relate to a kind of circulation height, film cleaning conveniently, and the membrane bioreactor that can prolong the film operational cycle and reduce cost.
A kind of membrane bioreactor of the present invention is characterized in that: comprise a treatment trough, at least one pre-filtering layer, at least one microbial film unit for attached growth of microorganisms, and at least one disturbing flow device,
This treatment trough has the accommodation space of a ccontaining sewage;
This pre-filtering layer is installed in this accommodation space, has first filter pore that several can supply sewage to pass through;
This microbial film unit is to be set in distance with this pre-filtering layer, and this microbial film unit has several second filter pore that can supply sewage to pass through, and a water outlet; And
This disturbing flow device is to be located in the middle of this pre-filtering layer and this microbial film unit, but and disturbance between this pre-filtering layer and this microbial film unit intermediary sewage.
Described membrane bioreactor is characterized in that:
This treatment trough has more a diapire and several and is formed at the hole of inflating on this diapire, and this disturbing flow device is arranged at the spoiler on the opposite face of wantonly two adjacent vertical risers with having several vertical risers that are the parallel interval setting mutually and several interleaved, this spoiler is to be positioned at this to inflate hole top, from these inflate that bubbles that the hole produces can impact these spoilers and disturbance between this pre-filtering layer and this microbial film unit intermediary sewage.
Described membrane bioreactor is characterized in that:
This treatment trough has more a diapire and at least one suction eye that is formed on this diapire, this microbial film unit has more a mesh-supported layer that supports this film for the film and of attached growth of microorganisms is installed in this film, this second filter pore and this water outlet are to be formed on this film, and this water outlet is to be connected with this suction eye.
Described membrane bioreactor is characterized in that:
This pre-filtering layer is by sponge, non-woven fabrics, polyethylene, the made porousness filter screen of wherein at least a material of polypropylene polymer resin, and the internal diameter of first filter pore of this pre-filtering layer is the internal diameter greater than unitary second filter pore of this microbial film.
Described membrane bioreactor is characterized in that:
More include the floating removal apparatus of a pressurization, the floating removal apparatus of this pressurization is pre-filtering layer upstream one side that is installed in this treatment trough, can make suspended particulates bigger in the sewage to the sewage injection bubble in this accommodation space, can be beneficial to strike off at the liquid level of sewage by buoyance lift by the buoyancy of bubble.
A kind of membrane bioreactor of the present invention comprises at least one pre-filtering layer, and at least one microbial film device, it is characterized in that:
This pre-filtering layer has first filter pore that several can supply sewage to pass through; And
This microbial film device, have a housing, two and be installed in this housing and the microbial film unit of confession attached growth of microorganisms, but and one be located in the middle of this two microbial films unit and disturbance between the disturbing flow device of these microbial film unit intermediary sewage, this two microbial films unit has several second filter pore that can supply sewage to pass through respectively, an and water outlet, when when the filtering sewage transport of this pre-filtering layer is in this housing, filter through this two microbial films unit again, and discharge this housing from the unitary water outlet of this microbial film.
Described membrane bioreactor is characterized in that:
More comprise a treatment trough, this treatment trough has one for the ccontaining accommodation space of sewage, and this pre-filtering layer is to be installed in this accommodation space.
Described membrane bioreactor is characterized in that:
This housing has at least one inlet that supplies sewage to enter and be positioned at this disturbing flow device below, and two outlets that are connected with the unitary water outlet of this two microbial film respectively.
Described membrane bioreactor is characterized in that:
This disturbing flow device has number and is the vertical risers that parallel interval is provided with mutually, and several interleaved ground is arranged at the spoiler on the opposite face of wantonly two adjacent vertical risers, and the spoiler of this disturbing flow device is to be positioned at above this inlet.
Described membrane bioreactor is characterized in that:
This two microbial films unit has a mesh-supported layer that supports this film for the film and of attached growth of microorganisms is installed in this film more respectively, and unitary second filter pore of this two microbial film and water outlet are to be formed at respectively on this film.
[description of drawings]
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 is a combination part sectioned view, and a kind of membrane bioreactor of external hanging type in the past is described;
Fig. 2 is a combination part sectioned view, and a kind of built-in in the past membrane bioreactor is described;
Fig. 3 is an assembled sectional view, and first preferred embodiment of membrane bioreactor of the present invention is described;
Fig. 4 is a stereographic map, and a disturbing flow device of this first preferred embodiment is described;
Fig. 5 is an assembled sectional view, and second preferred embodiment of membrane bioreactor of the present invention is described;
Fig. 6 is a local amplification view, and a biological film device is described; And
Fig. 7 is an assembled sectional view, and the 3rd preferred embodiment of membrane bioreactor of the present invention is described.
[embodiment]
As shown in Figure 3, Figure 4, first preferred embodiment of membrane bioreactor of the present invention comprises a treatment trough 10, a pre-filtering layer 20, one biological film unit 30, a disturbing flow device 40 and the floating removal apparatus 70 of a pressurization.
This treatment trough 10 has one can supply the ccontaining accommodation space 11 of sewage, and a diapire 12.This accommodation space 11 has one can float first district 111 that removes processing (detailed description is arranged down) for sewage, and second district 112 that is communicated with this first district 111.This pre-filtering layer 20, this microbial film unit 30 and this disturbing flow device 40 are to be installed in this second district 112, and belong to a built-in MBR system in present embodiment.What this diapire 12 had that several are positioned at these disturbing flow device 40 belows inflates hole 121 (sectional view of Fig. 3 can only be seen a dozen pores 121), and a suction eye 122 that is positioned at these 30 belows, microbial film unit.
This pre-filtering layer 20 is removably to be installed in this treatment trough 10, and has several first filter pore 21 that can pass through for sewage (be fine filter opening, graphic especially obviously do not illustrate).In the present embodiment, this pre-filtering layer 20 is to adopt pore dimension the sponge, non-woven fabrics, polyethylene, polypropylene polymer resin etc. of big (pore size is about 50～200 μ m) are wherein a kind of, or the made porousness filter screen of any above combination.
This microbial film unit 30 is to be set in distance with this pre-filtering layer 20, having one can be about the film 31 of 0.01～0.4 μ m for attached growth of microorganisms and pore size (present embodiment is that PVDF makes, be commonly called as the UF film), one be installed in this film 31 and can support this film 31 mesh-supported layer 32, several are formed on this film 31 and can (be fine filter opening for second filter pore 33 that sewage pass through, graphicly especially obviously do not illustrate), and one with these film 31 internal communication and extend to water outlet 34 in this suction eye 122.In the present embodiment, the internal diameter of first filter pore 21 of this pre-filtering layer 20 is the internal diameters greater than second filter pore 33 of this microbial film unit 30.
This disturbing flow device 40 is to be located in the middle of this pre-filtering layer 20 and this microbial film unit 30, have number and be the vertical riser 41 of parallel interval setting, the horizontal spoiler 42 on several opposite faces that are arranged at wantonly two adjacent vertical risers 41 mutually with being interleaved, and several corresponding these are inflated the through hole 43 in hole 121.When this pre-filtering floor 20, this microbial film unit 30 and this disturbing flow device 40 were installed in second district 112 of this accommodation space 11, the horizontal spoiler 42 of this disturbing flow device 40 was to be positioned at these to inflate 121 tops, hole.
The floating removal apparatus 70 of this pressurization is to be installed in this treatment trough 10 1 sides, and corresponding to first district 111 of this accommodation space 11, can be to the sewage injection bubble in this first district 111, make suspended particulates bigger in the sewage, can be beneficial to strike off at the liquid level of sewage by buoyance lift by the buoyancy of bubble.
As shown in Figure 3, when sewage is handled through floating the removing of the floating removal apparatus 70 of pressurization in this first district 111, and after these pre-filtering floor 20 preliminary filtrations the in this second district 112, can screen out the SS (suspended particulates) of most larger particles in the sewage, then, when sewage penetrates this pre-filtering layer 20 and then flow to this pre-filtering layer 20 middle with this microbial film unit 30, at this moment, from these inflate that bubble that hole 121 gets can impact these horizontal spoilers 42 and disturbance between this pre-filtering layer 20 and these microbial film unit 30 intermediary sewage, so, the film 31 of this pre-filtering layer 20 of the i.e. disturbance simultaneously of turbulent sewage and this microbial film unit 30, except the suspended substance that can reduce in the sewage is attached on the outside surface of this film 31, also can form the reverse backflow of this pre-filtering layer 20 of a reverse impact, it is long-pending thereon attached that suspended substance also is difficult for, and, sewage is again after this film 31 further filters, and penetrate in this film 31, and become the treating water of filteration, be sucked out the outside from this water outlet 34 at last and accumulate utilization.
Via above explanation, again advantage of the present invention is summarized as follows:
One, the present invention utilizes this pre-filtering layer 20 tentatively to filter out earlier SS (suspended particulates) most in the sewage, and then make effluent stream through this microbial film unit 30, therefore, the present invention can effectively reduce on the film 31 that suspended substance is attached to this microbial film unit 30, and is stifled with the dirt that reduces this film 31, so, compare with skill in the past, the present invention can still can significantly reduce the cleaning frequency of the film 31 of this microbial film unit 30 under the situation of high throughput, and prolongs the operational cycle of this film 31.
Two, in addition, pre-filtering layer 20 of the present invention be with sponge or non-woven fabrics etc. cheaply material make, therefore, when this pre-filtering layer 20 can't bear to use, the user of service can directly substitute renewal with this pre-filtering layer 20, and does not need to clean dirty stifled pre-filtering layer 20 with wasting time and energy again.
Three, secondly, disturbing flow device 40 of the present invention can be to forming perturbation action between this pre-filtering layer 20 and these microbial film unit 30 intermediary sewage, and the film 31 of this pre-filtering layer 20 of further disturbance and this microbial film unit 30, to avoid the suspended substance in the sewage to be attached on this pre-filtering layer 20 and this film 31, therefore, the present invention more can further prolong the duration of service of this pre-filtering layer 20 and this film 31, and further reduces the cleaning frequency of this film 31.
Four, the UF film material of plate and frame adopts the manufacturing of PVDF macromolecular material, has non-caked mud, chemical resistant properties, and the advantage of disassembled cleaning.
As Fig. 5, shown in Figure 6, be second preferred embodiment of membrane bioreactor of the present invention, this second preferred embodiment is to be similar to this first preferred embodiment, its difference be in:
This second preferred embodiment comprises a pre-treatment groove 60 and a biological film device 50.
This pre-treatment groove 60 is to be installed in before this treatment trough 10, and is communicated with this treatment trough 10.
This treatment trough 10 has one can supply the ccontaining accommodation space 11 of sewage, and this pre-filtering layer 20 is to be installed in this accommodation space 11, can carry out tentatively floating first district 111 that handles that removes and one second district 112 for sewage and this accommodation space 11 is divided into one.
This pre-filtering layer 20 has in several first filter pore 21 that can pass through for sewage equally.
This microbial film device 50, be to be provided in this treatment trough 10 outer (being that present embodiment is to belong to external hanging type MBR system), this microbial film device 50 has that a housing 51, two is installed in this housing 51 and can be for the microbial film unit 52 of attached growth of microorganisms, but and one be located in the middle of these microbial film unit 52 and disturbance between the disturbing flow device 53 of these microbial film unit 52 intermediary sewage.
This housing 51 has number can enter and be positioned at the inlet 511 of these disturbing flow device 53 belows for sewage, and two outlets 512 that lay respectively at these 52 tops, microbial film unit.
These microbial film unit 52 all have a mesh-supported layer 522 that can support this film 521 for the film 521, of attached growth of microorganisms be installed in this film 521, several are formed on this film 521 and can (be fine filter opening for second filter pore 523 that sewage pass through, graphicly especially obviously do not illustrate), and one with these film 521 internal communication and extend to the interior water outlet 524 of this outlet 512.In the present embodiment, the internal diameter of first filter pore 21 of this pre-filtering layer 20 is the internal diameters greater than second filter pore 523 of this microbial film unit 52.
The structure of this disturbing flow device 53 is to be same as this disturbing flow device 40, be vertical riser (figure does not show) that parallel interval is provided with mutually, be arranged at horizontal spoiler 531 on the opposite face of wantonly two adjacent vertical risers to several interleaved and have number, and these through holes 532 (sectional view of Fig. 5 can only be seen a through hole 532) of 511 of entering the mouth of number correspondence.When these microbial film unit 52 were installed in this housing 51 with this disturbing flow device 53, the horizontal spoiler 531 of this disturbing flow device 53 was to be positioned at these 511 tops that enter the mouth.
As shown in Figure 5, when sewage after this pre-filtering layer 20 preliminary filtration, penetrable this pre-filtering floor 20 of sewage and flowing in second district 112 of this accommodation space 11, then, sewage can be pumped to the housing 51 of this microbial film device 50 from this second district 112 through these inlets 511, at this moment, from these the inlet 511 up the ejection current can impact these horizontal spoilers 531 and disturbance between these microbial film unit 52 intermediary sewage, so, sewage i.e. the film 521 of these microbial film unit 52 of disturbance simultaneously, and the suspended substance in the minimizing sewage is attached on these films 521, and, when sewage again after these films 521 further filter, can penetrate in these films 521 and be drawn out of from these water outlets 524.In addition, present embodiment also can carry out the cleaning film operation of back washing, promptly, current are oppositely poured in these microbial film unit 52 from these water outlets 524, so, in cleaning water is pumped into these films 521 from inside to outside after, the long-pending film 521 lip-deep SS that are attached to can be reversed to dash and remove out, and then through these inlets 511 and reversed flow (or other go out the external world) to this second district 112, to reach the effect of this pre-filtering layer 20 of back washing with tubes rows.
As shown in Figure 7, the 3rd preferred embodiment for membrane bioreactor of the present invention, the 3rd preferred embodiment is to be similar to this first preferred embodiment, it is to comprise number to splice in regular turn in the microbial film unit 30 and the disturbing flow device 40 at these pre-filtering layer 20 rears that its difference is in: the 3rd preferred embodiment, and the cross section of the spoiler 44 of these disturbing flow devices 40 is to be in the shape of the letter V.So, the 3rd preferred embodiment also can reach purpose and the effect identical with above-mentioned first preferred embodiment.
Conclude above-mentioned, membrane bioreactor of the present invention, pre-filtering layer 20 with low cost and can be beneficial to and substitute renewal not only, and can prolong the duration of service of microbial film unit 30,52 and can effectively reduce the cleaning frequency of microbial film unit 30,52, and can be convenient to actual use, so can reach the purpose of invention really.
Claims (10)
1. membrane bioreactor is characterized in that: comprise a treatment trough, at least one pre-filtering layer, at least one microbial film unit for attached growth of microorganisms, and at least one disturbing flow device,
This treatment trough has the accommodation space of a ccontaining sewage;
This pre-filtering layer is installed in this accommodation space, has first filter pore that several can supply sewage to pass through;
This microbial film unit is to be set in distance with this pre-filtering layer, and this microbial film unit has several second filter pore that can supply sewage to pass through, and a water outlet; And
This disturbing flow device is to be located in the middle of this pre-filtering layer and this microbial film unit.
2. membrane bioreactor as claimed in claim 1 is characterized in that:
This treatment trough has more a diapire and several and is formed at the hole of inflating on this diapire, and this disturbing flow device is arranged at the spoiler on the opposite face of wantonly two adjacent vertical risers with having several vertical risers that are the parallel interval setting mutually and several interleaved, and this spoiler is to be positioned at this to inflate the top, hole.
3. membrane bioreactor as claimed in claim 1 is characterized in that:
This treatment trough has more a diapire and at least one suction eye that is formed on this diapire, this microbial film unit has more a mesh-supported layer that supports this film for the film and of attached growth of microorganisms is installed in this film, this second filter pore and this water outlet are to be formed on this film, and this water outlet is to be connected with this suction eye.
4. membrane bioreactor as claimed in claim 1 is characterized in that:
This pre-filtering layer is by sponge, non-woven fabrics, polyethylene, the made porousness filter screen of wherein at least a material of polypropylene polymer resin, and the internal diameter of first filter pore of this pre-filtering layer is the internal diameter greater than unitary second filter pore of this microbial film.
5. membrane bioreactor as claimed in claim 1 is characterized in that:
More include the floating removal apparatus of pressurization of the sewage injection bubble in a pair of this accommodation space, the floating removal apparatus of this pressurization is pre-filtering layer upstream one side that is installed in this treatment trough.
6. a membrane bioreactor comprises at least one pre-filtering layer, and at least one microbial film device, it is characterized in that:
This pre-filtering layer has first filter pore that several can supply sewage to pass through; And
This microbial film device, have a housing, two and be installed in this housing and the microbial film unit of confession attached growth of microorganisms, but and one be located in the middle of this two microbial films unit and disturbance between the disturbing flow device of these microbial film unit intermediary sewage, this two microbial films unit has several second filter pore that can supply sewage to pass through respectively, an and water outlet, when when the filtering sewage transport of this pre-filtering layer is in this housing, filter through this two microbial films unit again, and discharge this housing from the unitary water outlet of this microbial film.
7. membrane bioreactor as claimed in claim 6 is characterized in that:
More comprise a treatment trough, this treatment trough has one for the ccontaining accommodation space of sewage, and this pre-filtering layer is to be installed in this accommodation space.
8. membrane bioreactor as claimed in claim 6 is characterized in that:
This housing has at least one inlet that supplies sewage to enter and be positioned at this disturbing flow device below, and two outlets that are connected with the unitary water outlet of this two microbial film respectively.
9. membrane bioreactor as claimed in claim 6 is characterized in that:
This disturbing flow device has number and is the vertical risers that parallel interval is provided with mutually, and several interleaved ground is arranged at the spoiler on the opposite face of wantonly two adjacent vertical risers, and the spoiler of this disturbing flow device is to be positioned at above this inlet.
10. membrane bioreactor as claimed in claim 6 is characterized in that:
This two microbial films unit has a mesh-supported layer that supports this film for the film and of attached growth of microorganisms is installed in this film more respectively, and unitary second filter pore of this two microbial film and water outlet are to be formed at respectively on this film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100549833A CN1329315C (en) | 2004-07-27 | 2004-07-27 | Membrane bioreactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100549833A CN1329315C (en) | 2004-07-27 | 2004-07-27 | Membrane bioreactor |
Publications (2)
| Publication Number | Publication Date |
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| CN1727289A CN1727289A (en) | 2006-02-01 |
| CN1329315C true CN1329315C (en) | 2007-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100549833A Expired - Fee Related CN1329315C (en) | 2004-07-27 | 2004-07-27 | Membrane bioreactor |
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| CN (1) | CN1329315C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387316A (en) * | 2013-08-06 | 2013-11-13 | 常州友达环保科技有限公司 | Hybrid two-stage membrane bio-reactor (MBR) |
| CN103387317A (en) * | 2013-08-06 | 2013-11-13 | 常州友达环保科技有限公司 | Integrated two-stage membrane bio-reactor (MBR) |
| CN113104956B (en) * | 2021-03-04 | 2022-09-16 | 暨南大学 | Sewage filtering device based on biological membrane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5681471A (en) * | 1996-01-11 | 1997-10-28 | The Regents Of The University Of Colorado | Biological denitrification of water |
| WO1999018033A1 (en) * | 1997-10-05 | 1999-04-15 | Soda-Club (Co2) Sa | Apparatus and method for the purification of water |
| CN1358674A (en) * | 2000-12-15 | 2002-07-17 | 中国科学院生态环境研究中心 | Integral type film biological reactor |
| CN1426973A (en) * | 2001-12-17 | 2003-07-02 | 财团法人工业技术研究院 | Membrane bioreactor using non fabric filtration |
-
2004
- 2004-07-27 CN CNB2004100549833A patent/CN1329315C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5681471A (en) * | 1996-01-11 | 1997-10-28 | The Regents Of The University Of Colorado | Biological denitrification of water |
| WO1999018033A1 (en) * | 1997-10-05 | 1999-04-15 | Soda-Club (Co2) Sa | Apparatus and method for the purification of water |
| CN1358674A (en) * | 2000-12-15 | 2002-07-17 | 中国科学院生态环境研究中心 | Integral type film biological reactor |
| CN1426973A (en) * | 2001-12-17 | 2003-07-02 | 财团法人工业技术研究院 | Membrane bioreactor using non fabric filtration |
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| CN1727289A (en) | 2006-02-01 |
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