CN104261552B - A kind of revolving moving bed biological filter - Google Patents
A kind of revolving moving bed biological filter Download PDFInfo
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- CN104261552B CN104261552B CN201410520177.4A CN201410520177A CN104261552B CN 104261552 B CN104261552 B CN 104261552B CN 201410520177 A CN201410520177 A CN 201410520177A CN 104261552 B CN104261552 B CN 104261552B
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- moving bed
- inlet pipe
- cylinder
- water inlet
- biological filter
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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
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/082—Rotating biological contactors
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to a kind of revolving moving bed biological filter, it is characterized in that: comprise moving bed casing, the inner horizontal of moving bed casing arranges cylinder, cylinder, using baffle plate as support, can rotate around its central rotating shaft; The outer wall of cylinder is porous plate material, is provided with biofilter material in cylinder, and the external diameter of biofilter material is greater than the aperture of porous plate; The outer wall of cylinder is radially evenly arranged multiple plug-flow plates; The left and right sides on the top of moving bed casing is horizontally disposed with respectively water inlet pipe and outlet pipe, and water inlet pipe is corresponding with the plug-flow Board position at cylinder top; The bottom of moving bed casing and the longitudinal corresponding position of water inlet pipe, level is provided with at least one air inlet pipe, and the top of air inlet pipe is provided with row of openings solarization air cap upward; The aeration thrust of air inlet pipe and the water inlet thrust of water inlet pipe act on plug-flow plate simultaneously, drive cylinder to rotate; Moving bed casing bottom is provided with sewage draining exit. That the present invention makes simply, invests is low, energy consumption is low, ammonia nitrogen disposal ability is high.
Description
Technical field
The present invention relates to a kind of moving bed biological filter, relate in particular to a kind of revolving moving bedBiofiltration device, belongs to moving bed biological filtration art.
Background technology
MBBR is the KaldnesMiljoteknologi company (KMT) by NorwayThe one dirt of developing jointly in the end of the year 80 of 20th century with Norwegian University of Science & Technology (NTNU) and research institute of NorwayWater treatment technology. It has that disposal ability is high, energy consumption is low, do not need backwash, the loss of flood peak is little,Better, there is not the process characteristics such as obstruction in the solid three-phase mass transfer of air water, is widely used in industrial wastewater, cultivationThe denitrogenation dephosphorizing processing of the sewage dephosphorization such as waste water and sanitary sewage factory. Its operation principle is: in reactorThe larger filler of specific area, because being stirred in freely-movable in water, swings sewage continuously through out-of-date, at fillerInterior external enwergy forms biomembrane in a large number, microorganism amount reproduction on biomembrane, heterotrophism and autotrophic microbe profitC, N, P etc. in water carry out metabolism, remove organic pollution and denitrogenation dephosphorizing thereby playEffect.
In closed circulation water cultivating system, the accumulation of ammonia nitrogen has very large toxicity to cultivation object,How efficiently removing fast non-ionic ammonia is that a key technology that builds circulating water culture system is askedTopic. At present be mainly to remove by the nitrification of biofilter, traditional biofilter has: streamChange husky bed, BAF, trickling filter, moving bed etc.
The Biofiltration apparatus of existing industrial circulating water cultivating system, there is complex structure in it, takes up an areaArea is many, the drawbacks such as maintenance cost height and energy consumption height. Common moving bed is mainly to pass through aeration at presentRealize the motion of filtrate, cannot remove residual bait, ight soil solid particle organic matter and come off but existBiomembranous problem, and dirt excess accumulation causes the problem of nitrification ability decline.
Summary of the invention
The technical issues that need to address of the present invention are: existing moving bed biological filter plant, and complex structure,Floor space is many, and maintenance cost is high and energy consumption is high; Mainly realize the motion of filtrate by aeration, stillExist and cannot remove residual bait, ight soil solid particle organic matter and the biomembranous problem that comes off, and dirtyThe problem that thing excess accumulation causes nitrification ability to decline.
The present invention takes following technical scheme:
A kind of revolving moving bed biological filter, comprises moving bed casing, described movable bed boxThe inner horizontal of body arranges cylinder 3, and described cylinder 3, using baffle plate 2 as supporting, can turn at Rao Qi centerAxle rotates; The outer wall of described cylinder 2 is porous plate materials, in cylinder 2, is provided with biofilter material,The external diameter of biofilter material is greater than the aperture of described porous plate, and density is close to clear water density; Described cylinderOuter wall be radially evenly arranged multiple plug-flow plates 4; The left and right sides on the top of described moving bed casing is dividedBe not horizontally disposed with water inlet pipe 1 and outlet pipe 9, plug-flow plate 4 positions at described water inlet pipe 1 and cylinder topCorresponding; The bottom of described moving bed casing and the longitudinal corresponding position of water inlet pipe 1, level is provided withAt least one air inlet pipe 6, the top of described air inlet pipe 6 is provided with row of openings solarization air cap 601 upward;The aeration thrust of described air inlet pipe 6 and the water inlet thrust of water inlet pipe 1 act on plug-flow plate 4 simultaneously, driveCylinder 3 rotates; Described moving bed casing bottom is provided with sewage draining exit 8.
The feature of the technical program is: cylinder is set, and biofilter material is placed in to cylinder inside, moveWater distribution in movable bed casing, because the aperture of the mesh on cylinder is less than the external diameter of filtrate, can be by filtrateConcentrated cylinder inside; Owing to being radially provided with plug-flow plate, the water that water inlet pipe enters on the outer wall of cylinderStream, and the aeration of air inlet pipe top solarization air cap ejection act on plug-flow plate simultaneously, drive cylinder realNow rotate, the impulsive force of the buoyancy of the technical program by bubble, water inlet current, the buoyancy of filtrate,The revolving force effect of the gravity of filtrate and cylinder, thus drive filtrate shuttling movement and be uniformly distributed,Can improve the mass transfer dynamics of the materials such as dissolved oxygen, ammonia nitrogen, nitrite nitrogen, carbon dioxide, therebyImprove the biomembranous removal ammonia nitrogen of filtrate and organic matter effect; The collection of biomembrane and particulate organic matter comes offIn with precipitation be multiple comprehensive in the guide functions of its Action of Gravity Field, waterpower plug-flow and dirt colleceting area swash plate etc.Under effect, jointly complete.
Further, the height of described outlet pipe 9 is a little less than water inlet pipe 1, outlet pipe 9 bores be greater than intoWater pipe 1, water inlet pipe and water outlet pipe is respectively by valve regulated flow.
Further, the vertical section of described moving bed casing is polygon, is beneficial to and forms annular water flow field.
Further, described moving bed casing bottom surface has the gradient, the nearly nearlyer outlet pipe 9 of water inlet pipe 1 sideSide is high.
Further, the gradient of described moving bed casing bottom surface is greater than 10 °.
Further, the quantity of described air inlet pipe 6 is two, and in same level.
Further, the quantity of described baffle plate 2 is 2, and angle is 90 ° mutually.
Further, described moving bed casing front and rear wall is provided with the U-shaped raised line of integral type, for solidDetermine the rotating shaft of cylinder 2.
Beneficial effect of the present invention is:
1) this device collects solid particle organic matter, biomembrane sedimentation collection and nitration reaction removal ammonia come offNitrogen is in one.
2) shuttling movement of filtrate is uniform and stable, and water body fluidised form is good; Dissolved oxygen, ammonia nitrogen, carbon dioxide,Dissolved organic matter is evenly distributed in water body, and mass transfer effect is good.
3) collection that can be easy, efficient and discharge particulate organic matter and the aging biomembrane that comes off; PromoteBiomembranous metabolism, improves nitrification efficiency.
4) this roller frame also can be used for civil engineering form and is built in cement pit.
5) this device is suitable for the ammonia nitrogen containing aquiculture sewerages such as a large amount of suspended organic matters, particulate organic mattersProcess and organic matter removal processing, also there is the phosphor-removing effect of part simultaneously.
6) due to the decarburization successful of moving bed biological filter, this device can be used for multistage combined lifePrimary treatment in thing filtering technique.
Brief description of the drawings
Fig. 1 is the stereogram of the revolving moving bed biological filter of the present invention.
Fig. 2 is the front view of the revolving moving bed biological filter of the present invention.
Fig. 3 be in Fig. 2 A-A to profile.
Fig. 4 be in Fig. 3 B-B to cutaway view.
Fig. 5 is the structural representation of air inlet pipe.
In figure, 1. water inlet pipe, 2. baffle plate, 3. cylinder, 4. water pushing plate, 5. filter screen, 6. air inlet pipe,7. dirt colleceting area, 8. sewage draining exit.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is further described.
The present embodiment is a kind of Biofiltration apparatus that utilizes current and air-flow to drive drum rotating, has moreSaying of body, refers to a kind of moving bed for breeding wastewater processing that carries out biofiltration. This deviceBe mainly used in the water treatment of industrial circulating water cultivating system, also can be for other sewage disposal necksTerritory.
Referring to Fig. 1-5, a kind of revolving moving bed biological filter, comprises moving bed casing, instituteThe inner horizontal of stating moving bed casing arranges cylinder 3, and described cylinder 3, can using baffle plate 2 as supportingRotate around its central rotating shaft; The outer wall of described cylinder 2 is porous plate materials, in cylinder 2, is provided withBiofilter material, the external diameter of biofilter material is greater than the aperture of described porous plate, and density is close to clear water density;The outer wall of described cylinder is radially evenly arranged multiple plug-flow plates 4; The left side on the top of described moving bed casingRight both sides are horizontally disposed with respectively water inlet pipe 1 and outlet pipe 9, the plug-flow at described water inlet pipe 1 and cylinder topPlate 4 positions are corresponding; The bottom of described moving bed casing and the longitudinal corresponding position of water inlet pipe 1,Level is provided with at least one air inlet pipe 6, and the top of described air inlet pipe 6 is provided with row of openings aeration upwardHole 601; The aeration thrust of described air inlet pipe 6 and the water inlet thrust of water inlet pipe 1 act on plug-flow plate simultaneously4, drive cylinder 3 to rotate; Described moving bed casing bottom is provided with sewage draining exit 8.
At the interior filling filtrate of cylinder 3, the outer water distribution of cylinder. By rushing of the buoyancy of bubble, the current of intakingHit buoyancy, the gravity of filtrate and the revolving force effect of cylinder of power, filtrate, thereby drive filtrate to followRing moves and is uniformly distributed, and can improve the things such as dissolved oxygen, ammonia nitrogen, nitrite nitrogen, carbon dioxideThe mass transfer dynamics of matter, thus the biomembranous removal ammonia nitrogen of filtrate and organic matter effect improved. Life comes offConcentrated and the precipitation of thing film and particulate organic matter are at its Action of Gravity Field, waterpower plug-flow and dirt colleceting area swash plateThe multiple comprehensive function such as guide functions under jointly complete.
Comprehensive impetus by current jet and air-flow upwelling drives drum rotating, and then causesThe shuttling movement of filtrate and being uniformly distributed, has and the gradient is greater than the dirt colleceting area guide functions of 10 ° of wedged bottomsBe beneficial to promotion and particulate organic matter and aging biomembranous the concentrating and accumulation that come off.
Realize separating of filtrate and particulate organic matter by porous plate, porous plate area is only moving bed dressPut the half of diameter, porous plate aperture is about 1/2 of filtrate diameter, thereby has the filtrate of stopping and changeThe effect of kind current.
This roller frame also can be used for civil engineering form and is built in cement pit. This invention maintenance operation is convenient,Succinctly, small and exquisite.
Dirt colleceting area, moving bed casing bottom 7 gradient scopes are to be greater than 10 ° as good, and sewage draining exit 8 is positioned at collectionUnder dirty district, bring out, be convenient to particulate organic matter, the aging biomembranous collection discharge that comes off.
Cylinder 3 is a frame structure, has four equally distributed baffle plates, external one deck Φ 5mm apertureThe semi-rigid net of metal of (aperture is about the half of filtrate size). Make filtrate floating by bubble aeration,Thereby promote baffle plate and promote drum rotating. On the other hand, current by jet action in plug-flow plate, withAir-flow promotes drum rotating together. Being uniformly distributed two and entering between plug-flow plate 4 and cylinder 3 axle centerTracheae 6, air inlet gas distribution pipe length is slightly shorter than the width of moving bed device; The aeration of air inlet gas distribution pipeAperture is 0.1～0.5mm, and solarization air cap needs in the same size, even.
Plug-flow plate quantity is 8～24 is advisable, and width is equal to or less than cylinder width, and length approximately100-300mm. Cylinder should adopt the hard light plastic material with certain rigidity.
Outlet pipe is than the low 200-400mm of water inlet pipe, and outlet pipe bore is greater than water inlet pipe, and water inlet pipe and water outlet pipe dividesTong Guo valve regulated flow.
That the present invention designs is ingenious, simple in structure, it is simple to make, blowdown is convenient, it is low to invest, energy consumption is low,Do not need backwash, freedom from repairs, ammonia nitrogen disposal ability high. It can carry out nitrification remove non-When ion ammonia, remove solid particles a large amount of in cultivating system organic.
Claims (8)
1. a revolving moving bed biological filter, is characterized in that:
Comprise moving bed casing, the inner horizontal of described moving bed casing arranges cylinder (3), instituteState cylinder (3) using baffle plate (2) as supporting, can rotate around its central rotating shaft;
The outer wall of described cylinder (2) is porous plate material, and cylinder is provided with biofilter material in (2),The external diameter of biofilter material is greater than the aperture of described porous plate, and density is close to clear water density; DescribedThe outer wall of cylinder is radially evenly arranged multiple plug-flow plates (4);
The left and right sides on the top of described moving bed casing be horizontally disposed with respectively water inlet pipe (1) andOutlet pipe (9), described water inlet pipe (1) is corresponding with plug-flow plate (4) position at cylinder top;
The bottom of described moving bed casing and the longitudinal corresponding position of water inlet pipe (1), levelBe provided with at least one air inlet pipe (6), the top of described air inlet pipe (6) is provided with a row of openings courtOn solarization air cap (601);
The water inlet thrust of the aeration thrust of described air inlet pipe (6) and water inlet pipe (1) acts on simultaneouslyIn plug-flow plate (4), drive cylinder (3) to rotate;
Described moving bed casing bottom is provided with sewage draining exit (8).
2. moving bed biological filter as claimed in claim 1, is characterized in that: described outlet pipe(9) height is a little less than water inlet pipe (1), and outlet pipe (9) bore is greater than water inlet pipe (1),Water inlet pipe and water outlet pipe is respectively by valve regulated flow.
3. moving bed biological filter as claimed in claim 1, is characterized in that: described moving bedThe vertical section of casing is polygon, is beneficial to and forms annular water flow field.
4. moving bed biological filter as claimed in claim 1, is characterized in that: described moving bedTank floor has the gradient, and the nearly nearlyer outlet pipe of water inlet pipe (1) side (9) side is high.
5. moving bed biological filter as claimed in claim 4, is characterized in that: described moving bedThe gradient of tank floor is greater than 10 °.
6. moving bed biological filter as claimed in claim 1, is characterized in that: described air inlet pipe(6) quantity is two, and in same level.
7. moving bed biological filter as claimed in claim 1, is characterized in that: described baffle plate (2)Quantity be 2, mutually angle is 90 °.
8. moving bed biological filter as claimed in claim 1, is characterized in that: described moving bedCasing front and rear wall is provided with the U-shaped raised line of integral type, for the rotating shaft of resting barrel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410520177.4A CN104261552B (en) | 2014-09-30 | 2014-09-30 | A kind of revolving moving bed biological filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410520177.4A CN104261552B (en) | 2014-09-30 | 2014-09-30 | A kind of revolving moving bed biological filter |
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| CN104261552A CN104261552A (en) | 2015-01-07 |
| CN104261552B true CN104261552B (en) | 2016-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107140745A (en) * | 2017-05-06 | 2017-09-08 | 广汉海天洁诚水务有限公司 | A kind of trade effluent biofilm treatment apparatus |
| CN108423822A (en) * | 2018-04-27 | 2018-08-21 | 浙江大学 | High-efficiency internal circulation anaerobic biological reactor and its method |
| CN108892232B (en) * | 2018-07-05 | 2021-02-26 | 嘉兴市盛翔织造有限公司 | Automatic membrane bioreactor who clears up |
| CN113248017B (en) * | 2021-05-31 | 2022-10-28 | 江苏大学 | Rotary carrier sewage treatment device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201006845Y (en) * | 2007-01-19 | 2008-01-16 | 广州市污水治理有限责任公司 | Rotating biologicaldisc |
| CN102942249A (en) * | 2012-11-14 | 2013-02-27 | 中国水产科学研究院渔业机械仪器研究所 | Biological filtering device for moving bed |
| CN103058360A (en) * | 2013-01-18 | 2013-04-24 | 重庆大学 | Biological rotating disc in combination of non-woven fabrics package and biological carrier filler filling |
| CN203264364U (en) * | 2013-05-27 | 2013-11-06 | 上海复旦水务工程技术有限公司 | 360-degree water feeding rotary underwater filter bed device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10263316A (en) * | 1997-03-27 | 1998-10-06 | Mitsubishi Materials Corp | Floating type liquid purifying device and method therefor |
| JP2014138554A (en) * | 2013-01-21 | 2014-07-31 | Daiki Axis:Kk | Carrier for organism adhesion |
-
2014
- 2014-09-30 CN CN201410520177.4A patent/CN104261552B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201006845Y (en) * | 2007-01-19 | 2008-01-16 | 广州市污水治理有限责任公司 | Rotating biologicaldisc |
| CN102942249A (en) * | 2012-11-14 | 2013-02-27 | 中国水产科学研究院渔业机械仪器研究所 | Biological filtering device for moving bed |
| CN103058360A (en) * | 2013-01-18 | 2013-04-24 | 重庆大学 | Biological rotating disc in combination of non-woven fabrics package and biological carrier filler filling |
| CN203264364U (en) * | 2013-05-27 | 2013-11-06 | 上海复旦水务工程技术有限公司 | 360-degree water feeding rotary underwater filter bed device |
Non-Patent Citations (1)
| Title |
|---|
| 新型生物转盘;王真杰;《建筑技术通讯（给水排水）》;19791231(第6期);第46-47页 * |
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