CN101811802A - online cleaning anaerobic micro-mesh reactor - Google Patents
online cleaning anaerobic micro-mesh reactor Download PDFInfo
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- CN101811802A CN101811802A CN201010148293A CN201010148293A CN101811802A CN 101811802 A CN101811802 A CN 101811802A CN 201010148293 A CN201010148293 A CN 201010148293A CN 201010148293 A CN201010148293 A CN 201010148293A CN 101811802 A CN101811802 A CN 101811802A
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Abstract
The invention relates to an online cleaning anaerobic micro-mesh reactor, relates to anaerobic treatment technology for waste water, in particular to the anaerobic treatment technology for the waste water which adopts a micro-mesh separating membrane component as a solid-liquid separating unit, and is applied to the anaerobic treatment for domestic sewage and organic waste water (such as starch waste water) which contains high content of suspended matters. The anaerobic reactor of the invention is formed by arranging a water distribution system (6), the micro-mesh separating membrane component (2), an online mechanical cleaning device (4) and a cleaning control rod (3) in the anaerobic reactor (1), wherein the micro-mesh separating membrane component (2) consists of a plurality of micro-mesh membranes which are made into a flat type or a roll type according to the requirement on the reactor. The online cleaning anaerobic micro-mesh reactor not only has the characteristics of small construction investment, low cost, high membrane flux, low rate of micro-mesh pollution, long membrane cleaning period and good water treatment effect, but also has the characteristics of low operation energy consumption, low sludge yield and convenient cleaning.
Description
Technical field
The on-line cleaning anaerobic micro-mesh reactor, the anaerobic treatment technology that relates to waste water, relate in particular to and adopt the anaerobic treatment technology of microgrid separating film module, be applicable to anaerobic treatment the higher organic waste water (as starch wastewater) of sanitary sewage and suspension content as the waste water of solid-liquid separation unit.
Background technology
In recent years, film-bioreactor progressively is applied to trade effluent and municipal sewage treatment, and its core is to utilize the efficient crown_interception of film to carry out solid-liquid separation, replaces traditional second pond by membrane module.The anaerobism film-bioreactor combines the advantage of film-bioreactor and Anaerobic Microbiological Treatment Technology, and become the developing direction of efficient anaerobic treatment system, for the processing of sanitary sewage and the higher organic waste water of suspension content provides a kind of very attractive new technology.
Compare with traditional anaerobic technique, the anaerobism film-bioreactor shows tangible advantage.The anaerobism film-bioreactor can be held back microorganism fully and needn't increase the volume of reactor; also need not kind of a mud granulating; and owing to all microorganisms (particularly poky methanogen) all are trapped; the toxicity of anaerobic process intermediate product and restraining effect all can weaken, so the easier steady running of anaerobism film-bioreactor.The effluent quality of anaerobism film-bioreactor is better, and the mud flco is trapped in the problem of also having avoided traditional anaerobic reactor mud easily to run off in the reactor fully.
But, for lower concentrations such as the sanitary sewage (waste water of chemical oxygen demand COD＜1000mg/L), if adopting the anaerobism film-bioreactor handles, methane production is lower, be difficult to form a large amount of bubbles, cause film surface erosion effect little, therefore have shortcomings such as operating flux is low, film pollution speed is fast, this also becomes a technical bottleneck of its large-scale promotion and application.The Dynamic membrane that development in recent years is got up is meant and adopts large pore material as the sewage water filtration medium, and the pollutent and the adherent microbial product of later stage that utilize the initial stage to hold back form microbial film, thereby reach the purpose of improving effluent quality.At present, this technology is used for aerobic film-bioreactor more, as yellow rosy clouds (use Dynamic Membrane bioreactor mixed solution carried out filtering method and device patent of invention publication number CN 1363526A), be processed into filter assemblies with common porous material, bioreactor mixed solution is carried out filtering separation; Model refined (synergistic sewage water treatment method of dynamic biological film and activated sludge process and device patent of invention publication number CN 1490259A) is used the active sludge and the dynamic biomembranous synergy that suspend sewage is handled; Fan Yaobo (split-type tube type dynamic membrane bioreactor patent of invention publication number CN1785841A) adopts split-type tube type dynamic membrane to dispose of sewage and has obtained reasonable treatment effect.Zhou Chijun (a kind of Dynamic Membrane water treatment device patent of invention publication number CN 2403773Y) adopts the flushing of pressure air-dissolving water, makes filter cake fluff, and reduces film and pollutes.
At present, the example (anaerobic dynamic film bio sewage treating process patent of invention publication number CN 101333038A) that Dynamic Membrane is successfully applied to anaerobic reactor is also arranged, but find to remain in the some shortcomings part in application process to have much room for improvement: conventional aerobic dynamic film-bioreactor washes away control surface biofilm development thickness by aeration, and the membrane material multiselect is easy to mud with wire cloth, non-woven fabrics etc. and adheres to material with microorganism growth; If it is directly used in the anaerobism film-bioreactor, especially when being used to handle this type of low concentration wastewater of sanitary sewage, owing to do not exist aeration to wash away, and the biogas stirring action can ignore substantially, causes very easily that the accumulation of film surface biological film is blocked up, film pollutes too fast and cleaning interval of speed and shorten.When the Dynamic Membrane transmembrane pressure rises, when moving to terminal point, need clean.If only adopt the off-line cleaning way, human cost and energy consumption increase; If adopt online matting, the use of chemical agent brings certain restraining effect may for the interior microorganism active of reactor; In addition, because the effect that film surface cake layer is serving as second layer filter screen can obviously improve effluent quality, matting can cause the destruction of cake layer, need repeat to prepare Dynamic Membrane, makes its industrial applications be restricted.
Summary of the invention
It is a kind of easy to make that the object of the invention is to provide, and cost is low, the membrane flux height, and the film cleaning interval is long, and the on-line cleaning anaerobic micro-mesh separate reactor that water treatment is effective is handled sanitary sewage and the higher organic waste water of suspension content.
Micro-mesh reactor of the present invention is arranged in the anaerobic reactor by water distribution system, microgrid separating film module, online mechanical washing unit and cleaning control bar to be formed.The microgrid separating film module requires to make flat micro-net component or rolling micro-net component according to reactor, and online mechanical washing unit adopts quality softish hairbrush or sponge to make, and is provided with according to the difference of micro-net component form.
Flat microgrid separating film module is made up of a plurality of dull and stereotyped microgrid diaphragms that are made of microgrid, water conservancy diversion supporting network, frame and water outlet.Wherein, microgrid adopt that crease-resistant conformal performance is good, the terylene or the silk bolting silk of smooth surface, intensity height, good springiness; This class material aperture is big, any surface finish, and dissolubility pollutant and colloid can penetrate microgrid fully, and the microgrid surface is difficult for the growth microorganism simultaneously, and the final cake layer that forms is thinner.Therefore, when sewage passed through, particulate matter was trapped, but because its surface is difficult for adhering to, and particulate matter is back to anaerobic reactor more, along with some tiny suspended substances stop up microgrid duct part, effluent quality takes a turn for the better, and this process is lasted shorter, only needs about 1～2d.Subsequently, the microgrid surface can form the thin cake layer of one deck gradually, this cake layer has fine and close more structure based on mud, solvability microbial product (Soluble microbial products) and extracellular polymeric (Extracellular polymeric substances).Because microgrid smooth surface and material softness have disturbance slightly, cake layer promptly comes off, and forms the process that a microgrid strainability recovers automatically.Therefore, on-line cleaning anaerobic micro-mesh separate reactor can be in solid-liquid separation, improve effluent quality in, realize the high-throughput operation.After reactor moves for some time, when descending appears in membrane flux, in the time of need cleaning flat microgrid separation assembly,, move up and down online mechanical washing unit by handling the cleaning control bar, the cake layer on dull and stereotyped microgrid diaphragm-operated microgrid film surface is removed.Rolling microgrid separating film module comprises microgrid diaphragm and 2 spools, and the microgrid diaphragm fixedly is compounded in flexiplast water conservancy diversion net both sides by two films and makes; Run duration, microgrid diaphragm-operated two ends are connected with 2 spools respectively and twist on the spool.When reaching the end of run, rotate a side spool by manipulation cleaning control bar and roll up mobile microgrid diaphragm, in the moving process, the online mechanical washing unit that is fixed near the microgrid both sides of spool can be removed microgrid surface cake layer; One side spool is an open tube, as header or rising pipe.
Sewage at first enters anaerobic reactor by water distribution system, with the anaerobic sludge contact process in, the utilization that is degraded by microorganisms of being partly dissolved property organic pollutant, inorganic particle sedimentation, the less suspended contaminant of remaining proportion is held back by the microgrid separating film module, finally makes effluent quality improve.The suspension pollutent is trapped within the reactor, acidication, and a final part sees through the microgrid separating film module and discharges, and a part is by the anaerobion Degradation and Transformation, and sludge yield is low.
The present invention has the following advantages:
(1) have the anaerobism film-bioreactor advantage, mud can be trapped in the anaerobic reactor fully, successfully hydraulic detention time (HRT) is separated fully with sludge retention time (SRT), and needn't increase the volume of reactor, also need not kind of a mud granulating.
(2) because the microgrid material surface is smooth, be unsuitable for that mud adheres to and microorganism growth, the fine suspension held back of dependence initial stage is improved effluent quality to the obstruction in microgrid duct, therefore when significantly improving membrane flux, avoid the accumulation of mud, the significant prolongation cleaning interval on the microgrid surface.
(3) adopt online physics to clean, this cleaning way can significantly recover the microgrid strainability, and can not destroy tamper in the microgrid duct, thereby after cleaning, does not need to form again Dynamic Membrane.
(4) microgrid material itself is less expensive, and owing to it has the intensity height, crease-resistant conformality is good, through repeatedly still reusing after the physics cleaning, therefore makes the membrane module cost descend significantly.
(5) the online mechanical cleaning way of the present invention is simple, convenient, can adopt artificial cleaning way according to commercial production scale and production environment, also can adopt the automated operation mode or adopt artificial and the automated operation mode that combines, and is applied to Industrial processes.
Description of drawings
Accompanying drawing is an embodiment of the invention synoptic diagram, wherein:
Fig. 1 on-line cleaning anaerobic micro-mesh reactor of the present invention synoptic diagram;
The flat microgrid diaphragm structure of Fig. 2 synoptic diagram;
Fig. 3 rolling micro-net component structural representation;
Fig. 4 anaerobic micro-mesh assembly fundamental diagram;
Fig. 5 embodiment of the invention 1 transmembrane pressure is change curve in time;
Fig. 6 embodiment of the invention 2 transmembrane pressures are change curve in time;
Fig. 7 embodiment of the invention 3 transmembrane pressures are change curve in time;
Fig. 8 embodiment of the invention 4 transmembrane pressures are change curve in time;
Fig. 9 embodiment of the invention 5 transmembrane pressures are change curve in time;
Figure 10 embodiment of the invention 6 transmembrane pressures are change curve in time;
Figure 11 embodiment of the invention 7 transmembrane pressures are change curve in time.
Among the figure: anaerobic reactor 1, microgrid separating film module 2, cleaning control bar 3, online mechanical washing unit 4, header 5, water distribution system 6, frame 7, rising pipe 8, microgrid 9, water conservancy diversion supporting network 10, microgrid diaphragm 11, spool 12.
Embodiment
Micro-mesh reactor of the present invention is by flat microgrid separating film module 2, cleaning control bar 3, and online mechanical washing unit 4, header 5, water distribution system 6 is arranged in the anaerobic reactor 1 to be formed, and treated water is discharged from header 5.Cleaning control bar 3 is fixedlyed connected with online mechanical washing unit 4, in the time of need cleaning flat microgrid separation assembly 2, by handling cleaning control bar 3, move up and down online mechanical washing unit 4, the cake layer on dull and stereotyped microgrid diaphragm-operated microgrid 9 surfaces is removed.When adopting rolling microgrid separating film module, cleaning control bar 3 is connected with spool 12, rotate a side spool 12 and move the microgrid diaphragm, in moving process, the online mechanical washing unit 4 that is fixed near a side spool 12 microgrid both sides is removed microgrid diaphragm 11 surperficial cake layers.
[embodiment 1]
Adopt 200 order terylene nets to make flat microgrid separating film module 2.Be applied to the anaerobic treatment of sanitary sewage.The microgrid operating flux is 20L/m
2H behind the steady running 71d, arrives the end of run (transmembrane pressure reaches 30kPa).Water inlet COD concentration is 286.0 ± 71.2mg/L, and effluent COD concentration is 152.9 ± 49.6mg/L, and average removal rate is 56%.Transmembrane pressure is seen accompanying drawing 5 over time.
[embodiment 2]
Adopt 250 order terylene nets to make flat microgrid separating film module 2.Be applied to the anaerobic treatment of city domestic sewage.The microgrid operating flux is 20L/m
2H behind the steady running 58d, arrives the end of run (transmembrane pressure reaches 30kPa).Water inlet COD concentration is 286.0 ± 71.2mg/L, and effluent COD concentration is 145.3 ± 21.8mg/L, and average removal rate is 45.8%.Transmembrane pressure is seen accompanying drawing 6 over time.
[embodiment 3]
Adopt 300 order terylene nets to make flat microgrid separating film module 2.Be applied to the anaerobic treatment of city domestic sewage.The microgrid operating flux is 20L/m
2H behind the steady running 57d, arrives the end of run (transmembrane pressure reaches 30kPa).Water inlet COD concentration is 286.0 ± 71.2mg/L, and effluent COD concentration is 139.4 ± 18.5mg/L, and average removal rate is 48.4%.Transmembrane pressure is seen accompanying drawing 7 over time.
[embodiment 4]
Adopt 350 order terylene nets to make flat microgrid separating film module 2.Be applied to the anaerobic treatment of city domestic sewage.The microgrid operating flux is 20L/m
2H behind the steady running 56d, arrives the end of run (transmembrane pressure reaches 30kPa).Water inlet COD concentration is 286.0 ± 71.2mg/L, and effluent COD concentration is 132.9 ± 16.3mg/L, and average removal rate is 50.9%.Transmembrane pressure is seen accompanying drawing 8 over time.
[embodiment 5]
Adopt 420 order terylene nets to make flat microgrid separating film module 2.Be applied to the anaerobic treatment of city domestic sewage.The microgrid operating flux is 20L/m
2H behind the steady running 55d, arrives the end of run (transmembrane pressure reaches 30kPa).Water inlet COD concentration is 286.0 ± 71.2mg/L, and effluent COD concentration is 129.3 ± 10.1mg/L, and average removal rate is 52.7%.Transmembrane pressure is seen accompanying drawing 9 over time.
[embodiment 6]
Adopt 250 order silk bolting silks to make rolling microgrid separating film module 2.Be applied to the anaerobic treatment of city domestic sewage.The microgrid operating flux is 72L/m
2H behind the steady running 37d, arrives the end of run (transmembrane pressure reaches 30kPa).Water inlet COD concentration is 250.9 ± 50.1mg/L, and effluent COD concentration is 110.3 ± 24.8mg/L, and average removal rate is 54.2%.Transmembrane pressure is seen accompanying drawing 10 over time.
[embodiment 7]
Adopt 250 order silk bolting silks to make rolling microgrid separating film module 2.Be applied to the anaerobic treatment of city domestic sewage.The microgrid operating flux is 72L/m
2H behind the steady running 36d, arrives the end of run (transmembrane pressure reaches 30kPa).Water inlet COD concentration is 250.9 ± 50.1mg/L, and effluent COD concentration is 106.2 ± 33.5mg/L, and average removal rate is 55.8%.Transmembrane pressure is seen accompanying drawing 11 over time.
Claims (4)
1. on-line cleaning anaerobic micro-mesh reactor, by flat microgrid separating film module (2), cleaning control bar (3), online mechanical washing unit (4), header (5), water distribution system (6) is arranged in the anaerobic reactor (1) to be formed, it is characterized in that: flat microgrid separating film module (2) is fixedlyed connected with water conservancy diversion supporting network (10) by frame (7), rising pipe (8) is communicated with water conservancy diversion supporting network (10), and microgrid (9) firmly is compounded in the dull and stereotyped micro-net component of frame (7) and water conservancy diversion supporting network (10) both sides formation and forms; Rising pipe (8) is communicated with header (5); Cleaning control bar (3) is connected with online mechanical washing unit (4).
2. anaerobic micro-mesh reactor according to claim 1 is characterized in that: the microgrid separating film module also can be made the rolling micro-net component according to the reactor needs.
3. anaerobic micro-mesh reactor according to claim 1 is characterized in that: microgrid (9) adopts terylene or silk bolting silk.
4. anaerobic micro-mesh reactor according to claim 1 is characterized in that: line machinery washing unit (4) is made by hairbrush or sponge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010148293XA CN101811802B (en) | 2010-04-16 | 2010-04-16 | Online cleaning anaerobic micro-mesh reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010148293XA CN101811802B (en) | 2010-04-16 | 2010-04-16 | Online cleaning anaerobic micro-mesh reactor |
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| CN101811802A true CN101811802A (en) | 2010-08-25 |
| CN101811802B CN101811802B (en) | 2011-11-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102258944A (en) * | 2011-05-17 | 2011-11-30 | 同济大学 | Online cleaning method for membrane-bioreactor |
| CN102653428A (en) * | 2012-04-15 | 2012-09-05 | 同济大学 | Pretreatment method for separating impurities from water |
| CN110240260A (en) * | 2019-05-28 | 2019-09-17 | 同济大学 | A kind of sewage disposal device and method based on biofilm thickness in-situ control |
| CN114832632A (en) * | 2022-04-25 | 2022-08-02 | 北京华宇辉煌生态环保科技股份有限公司 | Sewage dynamic membrane cleaning device |
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| JPH11165169A (en) * | 1997-12-04 | 1999-06-22 | Hitachi Zosen Corp | Method for washing filtration membrane in membrane filtration type water purifying apparatus |
| CN1491904A (en) * | 2002-10-25 | 2004-04-28 | 中国科学院生态环境研究中心 | Film assembly cleaned mechanically |
| CN101333038A (en) * | 2007-06-28 | 2008-12-31 | 同济大学 | Anaerobic dynamic film bio sewage treating process |
| CN101428905A (en) * | 2008-12-04 | 2009-05-13 | 山东大学 | Integral anaerobic dynamic membrane bioreactor and method of operation |
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2010
- 2010-04-16 CN CN201010148293XA patent/CN101811802B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11165169A (en) * | 1997-12-04 | 1999-06-22 | Hitachi Zosen Corp | Method for washing filtration membrane in membrane filtration type water purifying apparatus |
| CN1491904A (en) * | 2002-10-25 | 2004-04-28 | 中国科学院生态环境研究中心 | Film assembly cleaned mechanically |
| CN101333038A (en) * | 2007-06-28 | 2008-12-31 | 同济大学 | Anaerobic dynamic film bio sewage treating process |
| CN101428905A (en) * | 2008-12-04 | 2009-05-13 | 山东大学 | Integral anaerobic dynamic membrane bioreactor and method of operation |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102258944A (en) * | 2011-05-17 | 2011-11-30 | 同济大学 | Online cleaning method for membrane-bioreactor |
| CN102258944B (en) * | 2011-05-17 | 2013-02-13 | 同济大学 | Online cleaning method for membrane-bioreactor |
| CN102653428A (en) * | 2012-04-15 | 2012-09-05 | 同济大学 | Pretreatment method for separating impurities from water |
| CN102653428B (en) * | 2012-04-15 | 2014-01-29 | 同济大学 | Pretreatment method for separating impurities from water |
| CN110240260A (en) * | 2019-05-28 | 2019-09-17 | 同济大学 | A kind of sewage disposal device and method based on biofilm thickness in-situ control |
| CN114832632A (en) * | 2022-04-25 | 2022-08-02 | 北京华宇辉煌生态环保科技股份有限公司 | Sewage dynamic membrane cleaning device |
| CN114832632B (en) * | 2022-04-25 | 2023-08-15 | 北京华宇辉煌生态环保科技股份有限公司 | Sewage dynamic membrane cleaning device |
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| CN101811802B (en) | 2011-11-16 |
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