CN103463988A - Self-cleaning MBR flat sheet membrane module and cleaning method thereof - Google Patents
Self-cleaning MBR flat sheet membrane module and cleaning method thereof Download PDFInfo
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- CN103463988A CN103463988A CN2013103148839A CN201310314883A CN103463988A CN 103463988 A CN103463988 A CN 103463988A CN 2013103148839 A CN2013103148839 A CN 2013103148839A CN 201310314883 A CN201310314883 A CN 201310314883A CN 103463988 A CN103463988 A CN 103463988A
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Abstract
The invention provides a self-cleaning MBR flat sheet membrane module and a cleaning method thereof. The self-cleaning MBR flat sheet membrane module comprises a plurality of flat sheet membrane elements (1) stacked at intervals and a framework (2) used for fixing the flat sheet membrane elements (1), wherein the edges of the flat sheet membrane elements (1) are provided with at least two aerator pipes (3), and the aerator pipes (3) are provided with a plurality of nozzles (31) ejecting gas towards the flat sheet membrane elements (1). With the self-cleaning MBR flat sheet membrane module and the cleaning method thereof, self-cleaning of the MBR flat sheet membrane module in operation is realized, and anti-pollution capability of the module is greatly improved. During long-term operation, the MBR flat sheet membrane module does not need cleaning, and even, on-line chemical cleaning can be cancelled; thus, the usage amount of chemical agents is reduced, operation flux of the MBR flat sheet membrane module is effectively ensured, and stability of long-time running of an MBR system is improved.
Description
Technical field
The present invention relates to technical field of sewage, particularly a kind of self-cleaning MBR plate film assembly, or a kind of cleaning method of self-cleaning MBR plate film assembly.
Background technology
The MBR(membrane bioreactor) be a kind of advanced person's sewage disposal technology, with film, separate and to have replaced the second pond in traditional water technology to have that technological process is simple, effluent quality good, the characteristics such as floor space is little, microorganism concn is high, anti impulsion load.But the film of MBR membrane module in running pollutes and caused the decline of membrane flux fast, needed membrane area increases, thereby causes increase of investment.Membrane pollution problem is to hinder the widely used bottleneck problem of MBR technology.In actual moving process, the extensive work in daily operation management is all that the MBR assembly is carried out to various types of cleanings.
Current cleaning way mainly contains on-line cleaning and off-line cleans two kinds of modes, all needs to use chemical agent.When carrying out on-line cleaning and off-line cleaning, corresponding MBR assembly all can not move, and can cause the decline of whole MBR system aquifer yield, cleans frequently the normal operation of having disturbed especially system.The chemical agent that on-line cleaning adds can enter in reactor, and microorganism is damaged.Membrane module is lifted out to reaction tank and carry out the off-line cleaning, increased especially labour intensity.Also have the manual formula of workman to clean, waste time and energy especially, so how to improve the contamination resistance of MBR assembly, reducing all kinds of cleanings or need not cleaning is the forward position of research.
Summary of the invention
Be not easy to the technical problem of cleaning in order to solve existing MBR plate film assembly, the invention provides a kind of self-cleaning MBR plate film assembly and cleaning method thereof.This self-cleaning MBR plate film assembly and cleaning method thereof have been realized MBR membrane module self-cleaning in running, greatly improve its resistant to pollution ability.In During Process of Long-term Operation, can not cleaned, even can be cancelled online Chemical cleaning, reduced the use amount of chemical agent, effectively guaranteed the operating flux of MBR membrane module, improved the stability of the long-term operation of MBR system.
The present invention for the technical scheme that solves its technical problem employing is: a kind of self-cleaning MBR plate film assembly, comprise the flat membrane component of the stacked setting in a plurality of intervals and for the framework of fixed flat planar membrane component, the edge of flat membrane component is provided with at least two aeration tubes, and aeration tube is provided with a plurality of nozzles towards the flat membrane component gas jet.
The edge of flat membrane component is provided with two aeration tubes, and two aeration tubes all are arranged on the same side of flat membrane component.
The injection direction of the nozzle on two aeration tubes is contrary.
Angle between the injection direction of nozzle and the axis of aeration tube is 30 °～60 °.
Flat membrane component is soft flat membrane component.
Aeration tube is perpendicular to flat membrane component.
The edge of flat membrane component is provided with two aeration tubes, and two aeration tubes are parallel to each other.
A kind of cleaning method of above-mentioned self-cleaning MBR plate film assembly, this cleaning method comprises the following steps:
Step 1: to an aeration tube air feed in two aeration tubes;
Step 2: to another root aeration tube air feed in two aeration tubes;
Step 3: repeating step one and step 2 successively.
In step 1, when the described aeration tube air feed in two aeration tubes, stop to described another root aeration tube air feed in two aeration tubes; In step 2: when described another root aeration tube air feed in two aeration tubes, stop to the described aeration tube air feed in two aeration tubes.
In step 1: the time to the described aeration tube air feed in two aeration tubes is 1 minute; In step 2: the time to described another root aeration tube air feed in two aeration tubes is 1 minute.
The invention has the beneficial effects as follows:
1. use self-cleaning MBR plate film assembly of the present invention and cleaning method thereof, can cancel online Chemical cleaning, thereby in the time of can not being created in the linearize cleaning, the impact of the chemical agent added on microorganism in reaction tank.
2. the present invention, can be by cycle the extending to more than 1 year from using of off-line cleaning after use in 3～6 months.
3. the present invention does not make with medicament, has saved medicament expense in the MBR running with (medicament expense account for operating cost 15%), so reduced cost.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, self-cleaning MBR plate film assembly of the present invention is carried out to further detailed description.
Fig. 1 is the structural representation of this self-cleaning MBR plate film assembly.
Fig. 2 is the schematic diagram of two aeration tube top nozzle injection directions.
Fig. 3 is the schematic diagram of the longitudinal section at an aeration tube place in two aeration tubes during air feed not.
The schematic diagram of the longitudinal section at aeration tube place when Fig. 4 is air feed in two aeration tubes.
Fig. 5 is the schematic diagram of the longitudinal section at another root aeration tube place in two aeration tubes during air feed not.
The schematic diagram of the longitudinal section at another root aeration tube place when Fig. 6 is air feed in two aeration tubes.
1. flat membrane components wherein, 2. framework, 3. aeration tube, 31. nozzles.
The specific embodiment
Below in conjunction with accompanying drawing, self-cleaning MBR plate film assembly of the present invention is elaborated.A kind of self-cleaning MBR plate film assembly, comprise the flat membrane component 1 of the stacked setting in a plurality of intervals and for the framework 2 of fixed flat planar membrane component 1, the edge of flat membrane component 1 is provided with at least two aeration tubes 3, aeration tube 3 is provided with a plurality of nozzles 31 towards flat membrane component 1 gas jet, as shown in Figure 1.
Wherein, the stacked setting in interval is to have interval or gap between adjacent two flat membrane components 1.The edge of flat membrane component 1 is provided with the same side that 3, two aeration tubes 3 of two aeration tubes all are arranged on flat membrane component 1, and as shown in Figure 1, two aeration tubes 3 all are arranged on the bottom of flat membrane component 1.The injection direction of the nozzle 31 on two aeration tubes 3 is contrary, as shown in Figure 2, the injection direction of one of them aeration tube 3 left, the injection direction of another aeration tube 3 to the right, specifically as shown in Figure 2, the injection direction of one of them aeration tube 3 is to upper left, and the injection direction of another aeration tube 3 is to upper right.
Angle between the axis of the injection direction of nozzle 31 and aeration tube 3 is 30 °～60 °.Flat membrane component 1 is soft flat membrane component 1.This soft flat membrane component 1 can bend 360 ° when stressed.In addition, aeration tube 3 is perpendicular to flat membrane component 1.The edge of flat membrane component 1 is provided with 3, two aeration tubes 3 of two aeration tubes and is parallel to each other.
A kind of cleaning method of above-mentioned self-cleaning MBR plate film assembly, this cleaning method comprises the following steps:
Step 1: to aeration tube 3 air feed in two aeration tubes 3;
Step 2: to another root aeration tube 3 air feed in two aeration tubes 3;
Step 3: repeating step one and step 2 successively.
Every aeration tube 3 can independently be controlled air feed, preferably in step 1, when described aeration tube 3 air feed in two aeration tubes 3, stop to described another root aeration tube 3 air feed in two aeration tubes 3, as shown in Figure 3 and Figure 4, at first to described aeration tube 3 air feed of membrane module bottom, now not to described another root aeration tube 3 air feed, can be so that the concussion that flat membrane component 1 produces reversed S-shape shape as shown in Figure 4; In step 2: when described another root aeration tube 3 air feed in two aeration tubes 3, stop to described aeration tube 3 air feed in two aeration tubes 3, as shown in Figure 5 and Figure 6, stop described aeration tube 3 air feed, to described another root aeration tube 3 air feed, make the concussion of flat membrane component 1 generation positive serpentine shape as shown in Figure 6 simultaneously.The concussion effect that the flexibility membrane module is formed produced by such rule alternative aeration can effectively be removed at flat membrane component 1 and be attached to the lip-deep mud of membrane component and mud cake in filter process.
In step 1: the time to described aeration tube 3 air feed in two aeration tubes 3 is 1 minute; In step 2: the time to described another root aeration tube 3 air feed in two aeration tubes 3 is 1 minute, and the time of this air feed also can change.
In addition, in order further to strengthen cleaning performance, can also be controlled the air demand of every aeration tube 3, as made between air demand and service life to be the trigonometric function relation, as made between air demand and service life, be SIN function relation: V=sin (t), wherein V is air demand, and t is the time, the concussion effect of the serpentine shape that utilizes SIN function and flat membrane component 1 to produce interacts, to strengthen cleaning performance.
The above, be only specific embodiments of the invention, can not limit the scope that invention is implemented with it, thus the displacement of its equivalent assemblies, or the equivalent variations of doing according to scope of patent protection of the present invention and modification, all should still belong to the category that this patent is contained.
Claims (10)
1. a self-cleaning MBR plate film assembly, it is characterized in that, described self-cleaning MBR plate film assembly comprises the flat membrane component (1) of the stacked setting in a plurality of intervals and for the framework (2) of fixed flat planar membrane component (1), the edge of flat membrane component (1) is provided with at least two aeration tubes (3), and aeration tube (3) is provided with a plurality of nozzles (31) towards flat membrane component (1) gas jet.
2. self-cleaning MBR plate film assembly according to claim 1, it is characterized in that: the edge of flat membrane component (1) is provided with two aeration tubes (3), and two aeration tubes (3) all are arranged on the same side of flat membrane component (1).
3. self-cleaning MBR plate film assembly according to claim 2, it is characterized in that: the injection direction of the nozzle (31) on two aeration tubes (3) is contrary.
4. self-cleaning MBR plate film assembly according to claim 1, it is characterized in that: the angle between the axis of the injection direction of nozzle (31) and aeration tube (3) is 30 °～60 °.
5. self-cleaning MBR plate film assembly according to claim 1, it is characterized in that: flat membrane component (1) is soft flat membrane component (1).
6. self-cleaning MBR plate film assembly according to claim 1, it is characterized in that: aeration tube (3) is perpendicular to flat membrane component (1).
7. self-cleaning MBR plate film assembly according to claim 1, it is characterized in that: the edge of flat membrane component (1) is provided with two aeration tubes (3), and two aeration tubes (3) are parallel to each other.
8. the cleaning method of the described self-cleaning MBR of any one plate film assembly in a claim 1～7, is characterized in that, this cleaning method comprises the following steps:
Step 1: to an aeration tube (3) air feed in two aeration tubes (3);
Step 2: to another root aeration tube (3) air feed in two aeration tubes (3);
Step 3: repeating step one and step 2 successively.
9. cleaning method according to claim 8 is characterized in that:
In step 1, when a described aeration tube (3) air feed in two aeration tubes (3), stop to described another root aeration tube (3) air feed in two aeration tubes (3);
In step 2: when described another root aeration tube (3) air feed in two aeration tubes (3), stop to a described aeration tube (3) air feed in two aeration tubes (3).
10. cleaning method according to claim 8 is characterized in that:
In step 1: the time to a described aeration tube (3) air feed in two aeration tubes (3) is 1 minute;
In step 2: the time to described another root aeration tube (3) air feed in two aeration tubes (3) is 1 minute.
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| CN201310314883.9A CN103463988B (en) | 2013-07-24 | 2013-07-24 | Self-cleaning MBR flat sheet membrane module and cleaning method thereof |
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| CN201310314883.9A CN103463988B (en) | 2013-07-24 | 2013-07-24 | Self-cleaning MBR flat sheet membrane module and cleaning method thereof |
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| CN103463988B CN103463988B (en) | 2015-09-23 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944571A (en) * | 2015-06-16 | 2015-09-30 | 南京中材水务股份有限公司 | Impulse type flushing device for flat membrane bioreactor and flushing method thereof |
| CN107098462A (en) * | 2017-06-08 | 2017-08-29 | 江苏新奇环保有限公司 | A kind of automatically cleaning MBR membrane modules |
| CN107754610A (en) * | 2017-11-30 | 2018-03-06 | 中科瑞阳膜技术（北京）有限公司 | Flat membrane component and plate film assembly |
| CN107971820A (en) * | 2017-11-29 | 2018-05-01 | 徐宁 | A kind of CNC Machine Tool Protective Cover with self-cleaning function |
| CN108483632A (en) * | 2018-04-25 | 2018-09-04 | 中欧兴华膜技术（成都）有限公司 | Membrane biological reaction apparatus for sewage purification |
| CN112591878A (en) * | 2020-12-29 | 2021-04-02 | 雅安沃克林环保科技有限公司 | Energy-saving MBR (membrane bioreactor) membrane device and membrane filtration method |
| CN114100377A (en) * | 2022-01-27 | 2022-03-01 | 苏州立升膜分离科技有限公司 | Membrane module cleaning device and cleaning method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104944571A (en) * | 2015-06-16 | 2015-09-30 | 南京中材水务股份有限公司 | Impulse type flushing device for flat membrane bioreactor and flushing method thereof |
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| CN107098462A (en) * | 2017-06-08 | 2017-08-29 | 江苏新奇环保有限公司 | A kind of automatically cleaning MBR membrane modules |
| CN107971820A (en) * | 2017-11-29 | 2018-05-01 | 徐宁 | A kind of CNC Machine Tool Protective Cover with self-cleaning function |
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| CN108483632A (en) * | 2018-04-25 | 2018-09-04 | 中欧兴华膜技术（成都）有限公司 | Membrane biological reaction apparatus for sewage purification |
| CN112591878A (en) * | 2020-12-29 | 2021-04-02 | 雅安沃克林环保科技有限公司 | Energy-saving MBR (membrane bioreactor) membrane device and membrane filtration method |
| CN114100377A (en) * | 2022-01-27 | 2022-03-01 | 苏州立升膜分离科技有限公司 | Membrane module cleaning device and cleaning method thereof |
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| CN103463988B (en) | 2015-09-23 |
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