CN104261552A - Rotary moving bed biological filtration device - Google Patents
Rotary moving bed biological filtration device Download PDFInfo
- Publication number
- CN104261552A CN104261552A CN201410520177.4A CN201410520177A CN104261552A CN 104261552 A CN104261552 A CN 104261552A CN 201410520177 A CN201410520177 A CN 201410520177A CN 104261552 A CN104261552 A CN 104261552A
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- inlet pipe
- water inlet
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- moving bed
- bed
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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 invention relates to a rotary moving bed biological filtration device. The rotary moving bed biological filtration device is characterized by comprising a moving bed box body, wherein a roller is horizontally arranged inside the moving bed box body, the roller is supported by a baffle and can rotate around the central rotating shaft of the roller; the outer wall of the roller is made of a porous plate, a biological filter material is arranged in the roller, and outer diameter of the biological filter material is larger than pore diameter of the porous plate; multiple plug flow plates are uniformly arranged on the outer wall of the roller along radial direction; the left side and the right side of the upper part of the moving bed box body are respectively horizontally provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe corresponds to plug flow plates on the top of the roller in positions; at least one air inlet pipe is horizontally arranged at a position, corresponding to the longitudinal direction of the water inlet pipe, at the lower part of the moving bed box body, and a row of aeration holes with openings upwards are formed in the upper part of the air inlet pipe; aeration thrust of the air inlet pipe and water inlet thrust of the water inlet pipe act on the plug flow plates at the same time to drive the roller to rotate; and a sewage draining outlet is formed in the bottom of the moving bed box body. The rotary moving bed biological filtration device is simple to make, low in investment, low in energy consumption and high in ammonia nitrogen treatment capacity.
Description
Technical field
The present invention relates to a kind of moving bed biological filtration unit, particularly relate to a kind of revolving moving bed biological filtration unit, belong to moving bed biological filtration art.
Background technology
MBBR is a kind of sewage treatment process developed jointly in the end of the year in 20th century 80 with Norwegian University of Science & Technology (NTNU) and institute of Norway by the Kaldnes Miljoteknologi company (KMT) of Norway.It has, and processing power is high, energy consumption is low, do not need back flushing, head loss is little, the process characteristics such as blocking better, do not occur air water solid three-phase mass transfer, is widely used in the denitrogenation dephosphorizing process of the sewage dephosphorization factories such as trade effluent, breeding wastewater and sanitary sewage.Its principle of work is: the filler that in reactor, specific surface area is larger is because being stirred in free movement in water, swing sewage continuously across time, in filler, external enwergy forms microbial film in a large number, microorganism amount reproduction on microbial film, heterotrophism and autotrophic microorganism utilize C, N, P etc. in water to carry out metabolism, thus play the effect of removing organic pollutant and denitrogenation dephosphorizing.
In closed circulation water cultivating system, the accumulation of ammonia nitrogen has very large toxicity to cultivation object, and how efficient non-ionic ammonia of removing fast is the key technical problem building circulating water culture system.Mainly removed by the nitrification of biological filter at present, traditional biological filter has: fluidisation husky bed, BAF, trickling filter, moving-bed etc.
The Biofiltration apparatus of existing industrial circulating water cultivating system, there is complex structure in it, floor space is many, the drawbacks such as maintenance cost height and energy consumption height.Moving-bed common at present mainly realizes the motion of filtrate by aeration, but also exists and cannot remove residual bait, faecal solids particulate organic matter and the biomembranous problem that comes off, and the problem that dirt excess accumulation causes nitrification ability to decline.
Summary of the invention
The technical issues that need to address of the present invention are: existing moving bed biological filter plant, complex structure, and floor space is many, and maintenance cost is high and energy consumption is high; Realize the motion of filtrate mainly through aeration, but also exist and cannot remove residual bait, faecal solids particulate organic matter and the biomembranous problem that comes off, and the problem that dirt excess accumulation causes nitrification ability to decline.
The present invention takes following technical scheme:
A kind of revolving moving bed biological filtration unit, comprise moving-bed casing, the inner horizontal of described moving-bed casing arranges cylinder 3, and described cylinder 3, using baffle plate 2 as support, can rotate around its central rotating shaft; The outer wall of described cylinder 2 is porous plate materials, is provided with biofilter material in cylinder 2, and 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 plate 4; The left and right sides on the top of described moving-bed casing is horizontally disposed with water inlet pipe 1 and rising pipe 9 respectively, and described water inlet pipe 1 is corresponding with plug-flow plate 4 position at cylinder top; The corresponding position longitudinal with water inlet pipe 1, bottom of described moving-bed casing, level is provided with at least one inlet pipe 6, and the top of described inlet pipe 6 is provided with row of openings solarization air cap 601 upward; The aeration thrust of described inlet pipe 6 and the water inlet thrust of water inlet pipe 1 act on plug-flow plate 4 simultaneously, drive cylinder 3 to rotate; Described moving-bed bottom half is provided with sewage draining exit 8.
The feature of the technical program is: arrange cylinder, and biofilter material is placed in drums inside, water distribution in moving-bed casing, and the aperture due to the mesh on cylinder is less than the external diameter of filtrate, drums inside filtrate can concentrated; Due to the outer wall of cylinder being radially provided with plug-flow plate, the current that water inlet pipe enters, and the aeration of solarization air cap ejection above inlet pipe, act on plug-flow plate simultaneously, cylinder is driven to realize rotating, the technical program is by the revolving force effect of the surging force of the buoyancy of bubble, water inlet current, the buoyancy of filtrate, the gravity of filtrate and cylinder, thus drive filtrate cyclic motion and be uniformly distributed, the mass transfer dynamics of the materials such as dissolved oxygen, ammonia nitrogen, nitrite nitrogen, carbonic acid gas can be improved, thus improve the biomembranous removal ammonia nitrogen of filtrate and organism effect; The concentrating of microbial film and particulate organic matter that come off is jointly complete under the multiple comprehensive action such as guide functions of its action of gravity, waterpower plug-flow and dirt colleceting area swash plate with precipitation.
Further, the height of described rising pipe 9 is a little less than water inlet pipe 1, and rising pipe 9 bore is greater than water inlet pipe 1, and water inlet pipe and water outlet pipe is respectively by valve regulated flow.
Further, the longitudinal section of described moving-bed casing is Polygons, is beneficial to and forms annular water flow field.
Further, described moving-bed tank floor has the gradient, and nearlyer rising pipe 9 side, nearly water inlet pipe 1 side is high.
Further, the gradient of described moving-bed tank floor is greater than 10 °.
Further, the quantity of described inlet pipe 6 is two, and in same level.
Further, the quantity of described baffle plate 2 is 2 pieces, and mutual angle is 90 °.
Further, described moving-bed casing front and rear wall is provided with the U-shaped raised line of integral type, for the rotating shaft of resting barrel 2.
Beneficial effect of the present invention is:
1) this device integrates solid particulate organism, come off microbial film sedimentation collection and nitration reaction removal ammonia nitrogen.
2) cyclic motion of filtrate is uniform and stable, and water body fluidised form is good; Dissolved oxygen, ammonia nitrogen, carbonic acid gas, dissolved organic matter are 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 microbial film that comes off; Promote biomembranous metabolism, improve 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 NH_3-N treating and the organic matter removal process that contain the aquiculture sewerages such as a large amount of suspended organic matter, particulate organic matter, also has the phosphor-removing effect of part simultaneously.
6) due to the decarburization successful of moving bed biological filter, this device can be used for the primary treatment in multistage combined biofiltration technique.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the revolving moving bed biological filtration unit of the present invention.
Fig. 2 is the front view of the revolving moving bed biological filtration unit of the present invention.
Fig. 3 be in Fig. 2 A-A to sectional view.
Fig. 4 be in Fig. 3 B-B to sectional view.
Fig. 5 is the structural representation of inlet pipe.
In figure, 1. water inlet pipe, 2. baffle plate, 3. cylinder, 4. water pushing plate, 5. filter screen, 6. inlet pipe, 7. dirt colleceting area, 8. sewage draining exit.
Embodiment
Below in conjunction with specific embodiments and the drawings, the present invention is further described.
The present embodiment is a kind of Biofiltration apparatus utilizing current and air-flow to drive drum rotating, in particular, refers to a kind of moving-bed for cultivating wastewater purification carrying out biofiltration.This device is mainly used in the water treatment of industrial circulating water cultivating system, also may be used for other sewage treatment areas.
See Fig. 1-5, a kind of revolving moving bed biological filtration unit, comprises moving-bed casing, and the inner horizontal of described moving-bed casing arranges cylinder 3, and described cylinder 3, using baffle plate 2 as support, can rotate around its central rotating shaft; The outer wall of described cylinder 2 is porous plate materials, is provided with biofilter material in cylinder 2, and 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 plate 4; The left and right sides on the top of described moving-bed casing is horizontally disposed with water inlet pipe 1 and rising pipe 9 respectively, and described water inlet pipe 1 is corresponding with plug-flow plate 4 position at cylinder top; The corresponding position longitudinal with water inlet pipe 1, bottom of described moving-bed casing, level is provided with at least one inlet pipe 6, and the top of described inlet pipe 6 is provided with row of openings solarization air cap 601 upward; The aeration thrust of described inlet pipe 6 and the water inlet thrust of water inlet pipe 1 act on plug-flow plate 4 simultaneously, drive cylinder 3 to rotate; Described moving-bed bottom half is provided with sewage draining exit 8.
Filtrate is loaded, the outer water distribution of cylinder in cylinder 3.By the revolving force effect of the surging force of the buoyancy of bubble, water inlet current, the buoyancy of filtrate, the gravity of filtrate and cylinder, thus drive filtrate cyclic motion and be uniformly distributed, the mass transfer dynamics of the materials such as dissolved oxygen, ammonia nitrogen, nitrite nitrogen, carbonic acid gas can be improved, thus improve the biomembranous removal ammonia nitrogen of filtrate and organism effect.The concentrating of microbial film and particulate organic matter that come off is jointly complete under the multiple comprehensive action such as guide functions of its action of gravity, waterpower plug-flow and dirt colleceting area swash plate with precipitation.
Drum rotating is driven by the comprehensive pushing effect of current jet and air-flow upwelling, and then cause the cyclic motion of filtrate and be uniformly distributed, and the dirt colleceting area guide functions that the gradient is greater than 10 ° of wedged bottoms is conducive to promoting and particulate organic matter and aging biomembranous the concentrating and accumulation that come off.
Realize being separated of filtrate and particulate organic matter by porous plate, porous plate area is only the half of moving-bed assembly dia, and porous plate aperture is about 1/2 of filtrate diameter, thus has the effect stopping filtrate and improve 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.
Moving-bed bottom half dirt colleceting area 7 gradient scope, to be greater than 10 ° for good, brings out under sewage draining exit 8 is positioned at dirt colleceting area, is convenient to particulate organic matter, the aging biomembranous collection discharge that comes off.
Cylinder 3 is a skeleton construction, has four equally distributed baffle plates, the semi-rigid net of metal of external one deck Φ 5mm aperture (aperture is about the half of filtrate size).By bubble aeration, filtrate is floated, promote baffle plate thus promote drum rotating.On the other hand, current in plug-flow plate, promote drum rotating by jet action together with air-flow.Between plug-flow plate 4 and cylinder 3 axle center, be uniformly distributed two inlet pipe 6, inlet mouth gas distribution pipe length is slightly shorter than the width of moving-bed device; The aeration aperture of inlet mouth gas distribution pipe is 0.1 ~ 0.5mm, and solarization air cap needs in the same size, even.
Plug-flow plate quantity is 8 ~ 24 pieces and is advisable, and width is equal to or less than roller width, and length is about 100-300mm.Cylinder should adopt the hard lightweight plastic material with certain rigidity.
Rising pipe 200-400mm lower than water inlet pipe, rising pipe bore is greater than water inlet pipe, and water inlet pipe and water outlet pipe is respectively by valve regulated flow.
The present invention design ingenious, structure simple, make simple, blowdown is convenient, it is low to invest, energy consumption is low, do not need back flushing, maintenance free, NH_3-N treating ability are high.It is organic that it can remove solid particulates a large amount of in cultivating system while carrying out nitrification removal non-ionic ammonia.
Claims (8)
1. a revolving moving bed biological filtration unit, is characterized in that:
Comprise moving-bed casing, the inner horizontal of described moving-bed casing arranges cylinder (3), and described cylinder (3), using baffle plate (2) as support, 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), and 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 plate (4);
The left and right sides on the top of described moving-bed casing is horizontally disposed with water inlet pipe (1) and rising pipe (9) respectively, and described water inlet pipe (1) is corresponding with plug-flow plate (4) position at cylinder top;
The corresponding position longitudinal with water inlet pipe (1), bottom of described moving-bed casing, level is provided with at least one inlet pipe (6), and the top of described inlet pipe (6) is provided with row of openings solarization air cap upward (601);
The aeration thrust of described inlet pipe (6) and the water inlet thrust of water inlet pipe (1) act on plug-flow plate (4) simultaneously, drive cylinder (3) to rotate;
Described moving-bed bottom half is provided with sewage draining exit (8).
2. moving bed biological filtration unit as claimed in claim 1, it is characterized in that: the height of described rising pipe (9) is a little less than water inlet pipe (1), rising pipe (9) bore is greater than water inlet pipe (1), and water inlet pipe and water outlet pipe is respectively by valve regulated flow.
3. moving bed biological filtration unit as claimed in claim 1, is characterized in that: the longitudinal section of described moving-bed casing is Polygons, is beneficial to and forms annular water flow field.
4. moving bed biological filtration unit as claimed in claim 1, it is characterized in that: described moving-bed tank floor has the gradient, nearlyer rising pipe (9) side, nearly water inlet pipe (1) side is high.
5. moving bed biological filtration unit as claimed in claim 4, is characterized in that: the gradient of described moving-bed tank floor is greater than 10 °.
6. moving bed biological filtration unit as claimed in claim 1, is characterized in that: the quantity of described inlet pipe (6) is two, and in same level.
7. moving bed biological filtration unit as claimed in claim 1, is characterized in that: the quantity of described baffle plate (2) is 2 pieces, and mutual angle is 90 °.
8. moving bed biological filtration unit as claimed in claim 1, is characterized in that: described moving-bed casing 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 |
|---|---|---|---|
| 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 |
|---|---|---|---|
| CN201410520177.4A CN104261552B (en) | 2014-09-30 | 2014-09-30 | A kind of revolving moving bed biological filter |
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| CN104261552A true CN104261552A (en) | 2015-01-07 |
| CN104261552B CN104261552B (en) | 2016-05-11 |
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| CN201410520177.4A Active CN104261552B (en) | 2014-09-30 | 2014-09-30 | A kind of revolving moving bed biological filter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108892232A (en) * | 2018-07-05 | 2018-11-27 | 嘉兴市盛翔织造有限公司 | A kind of membrane bioreactor cleared up automatically |
| CN113248017A (en) * | 2021-05-31 | 2021-08-13 | 江苏大学 | Rotary carrier sewage treatment device |
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2014
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108892232A (en) * | 2018-07-05 | 2018-11-27 | 嘉兴市盛翔织造有限公司 | A kind of membrane bioreactor cleared up automatically |
| 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 |
| CN113248017A (en) * | 2021-05-31 | 2021-08-13 | 江苏大学 | Rotary carrier sewage treatment device |
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| CN104261552B (en) | 2016-05-11 |
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