CN102030403B - Fluidized bed-type biological treatment apparatus - Google Patents
Fluidized bed-type biological treatment apparatus Download PDFInfo
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- CN102030403B CN102030403B CN201010288067.1A CN201010288067A CN102030403B CN 102030403 B CN102030403 B CN 102030403B CN 201010288067 A CN201010288067 A CN 201010288067A CN 102030403 B CN102030403 B CN 102030403B
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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
- C02F3/085—Fluidized beds
-
- 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
- C02F3/06—Aerobic processes using submerged filters
-
- 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
- C02F3/10—Packings; Fillings; Grids
- C02F3/104—Granular carriers
-
- 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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
-
- 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
-
- 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
- Y02W10/20—Sludge processing
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (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)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The object of the present invention is to provide the fluidized bed-type biological treatment apparatus that flowability of carrier is good, biological treatment efficiency is high.Described fluidized bed-type biological treatment apparatus (1) possesses: using the columnar cell body (2) of cylinder axis direction as vertical direction; Be configured at the drive shaft (3) of the shaft core position of this cell body (2); Be fixed on the rotary wings (4) of this drive shaft (3); Only be arranged at the baffle plate (5) on the inner peripheral surface top of cell body (2); Be arranged at the spillway (7) on the top of cell body (2); And process water output magazine (6).Baffle plate (5) than water surface site WL more downside length H
2the depth of water H of this cell body (2)
15 ~ 20%, be particularly preferably 10 ~ 15%.
Description
Technical field
The present invention relates to the fluidized bed-type biological treatment apparatus for the treatment of discharge water, particularly relate to the fluidized bed-type biological treatment apparatus being made carrier flow by rotary wings.
Background technology
Known with the high loading of the side's of row aquatic organism treatment unit and water quality rise to object, adopt the fluidized bed-type biological treatment apparatus being attached with microorganism carrier in high concentration.As the method stirring this carrier, rotary wings is adopted also to be known (patent documentation 1,2).
On the books in patent documentation 1: at the bottom of reactive tank central part configuration agitating wing, to make, in the biologically device of the carrier flow of porous cellulose, to arrange radial fixed-wing in the center upper portion of groove.By arranging this fixed-wing, can make to produce near the water surface be collected in central flowing and form powerful katabatic drainage, making carrier be able to sedimentation (0011 section of patent documentation 1).
On the books in patent documentation 2: being added with the center upper portion configuration agitating wing that particle diameter is the nitration reaction groove of the Mierocrystalline cellulose carrier of 4mm, baffle plate being set in the bottom surface central authorities of reactive tank, thus forming powerful wind spout shape upwelling in groove center portion.
Be attached with in high concentration in the bioremediation of microorganism carrier in use, when reaction of carrying out a biological disposal upon is the reaction generating the gas such as the methane gas of anaerobic treatment or the nitrogen of denitrogenation processing, owing to being attached with bag gas in microorganism carrier, proportion is made to become less than 1.0 sometimes.
In order to make the carrier of proportion below 1 flow in whole groove, preferably by the structure of the agitating vane and baffle plate with turbine blade or propeller type blades etc., produce upper and lower cycling stream.
On the books in patent documentation 3: in order to make the mixing efficiency in steel basin improve, the above-below direction being provided with the inner circumferential side of the groove of agitating wing at middle shaft part arranges baffle plate.
Prior art document
Patent documentation 1: Japanese Unexamined Patent Publication 2000-254682
Patent documentation 2: Japanese Unexamined Patent Publication 2002-143889
Patent documentation 3: Japanese Unexamined Patent Publication 4-346826
Summary of the invention
The problem that invention will solve
Generally, in order to obtain high water quality treatment, the filling ratio improving carrier is effective means.But described in such as patent documentation 3 and Fig. 4 described later, if arrange baffle plate on the whole height of groove, then, under the condition of the high fill-ratio of carrier, can not obtain good flowing, solid-liquid mixing is not good.
Namely, if when cell body inner peripheral surface arranges longitudinal baffle with the form of crossing over the whole height of cell body, although produce powerful upwelling or katabatic drainage along cell body inner peripheral surface, but, return velocity towards the agitating vane direction near central shaft is less than upwelling speed, therefore, the carrier productive set of proportion less than 1.0 is on the top of reactive tank.For this reason, the local filling ratio on reactive tank top significantly increases.And due to the interference of carrier each other and between carrier and baffle plate, stagnating easily appears in carrier.
In addition, in the reactive tank of fluidized bed-type biological treatment apparatus, when arrange longitudinal baffle on the whole height of groove, carrier is aggregated into large bulk, and mobility declines, and the power of needs becomes large.
Do not have in the reactive tank of baffle plate shown in Fig. 5 described later, when the filling ratio of carrier is high, in groove, the flowing of liquid is based on laminar flow (laminarflow), therefore, proportion be less than 1.0 carrier rotate near the water surface, the inner peripheral surface along cell body stops.
For this reason, as as described in patent documentation 1,2, when reactive tank inner peripheral surface does not arrange baffle plate (below, be sometimes called " longitudinal baffle ") of above-below direction, the carrier floated up is stuck near the water surface of reactive tank inner peripheral surface, causes the carrier ratio flowed to tail off.
Namely, when the reactive tank without longitudinal baffle as described in patent documentation 1,2, the carrier that attached to bubble by carrying out a biological disposal upon or originally proportion are the Specific gravity carrier of less than about 1 or 1 degree, the centrifugal force rotated along with rotary wings and the upwelling along groove inner peripheral surface, rotate while rise in groove by spiral trajectory along groove inner peripheral surface.When the carrier so risen along groove inner peripheral surface arrives near the water surface, water is rotating while flow near water surface central authorities, soon near water surface central authorities, katabatic drainage is formed as and submerged, but, because near the groove inner peripheral surface near the water surface, the flowing of water dies down, therefore, the strength carrier being in levitated state being flowed to water surface center position is weak.In addition, because carrier is rotating along cell body inner peripheral surface, therefore, the centrifugal force of rotation serves the effect pushed to groove inner peripheral surface by carrier.For above-mentioned reasons, do not have in the Stirring wing formula reactive tank of longitudinal baffle at patent documentation 1,2, near the water surface staying in groove inner peripheral surface as carrier picture silts up, the turnover rate of carrier reduces.
The object of the invention is to, the fluidized bed-type biological treatment apparatus that the good fluidity of carrier, biological treatment efficiency are high is provided.
Solve the method for problem
As the fluidized bed-type biological treatment apparatus of the 1st embodiment, it is filled with carrier in cell body, and in the way of the above-below direction of cell body, be configured for the fluidized bed-type biological treatment apparatus of the rotary wings stirring this carrier, it is characterized in that, only baffle plate is set on the top of cell body inner peripheral surface.
The fluidized bed-type biological treatment apparatus of the 2nd embodiment, is characterized in that, in the 1st embodiment, the mean density of carrier is 0.96 ~ 1.02g/cm
3, the median size of carrier is 1 ~ 5mm, and in cell body, the filling ratio of carrier is 5 ~ 50%.
The fluidized bed-type biological treatment apparatus of the 3rd embodiment, it is characterized in that, in the 1st embodiment or the 2nd embodiment, above-mentioned baffle plate is above-below direction extends while, from the tabular that cell body inner peripheral surface extends towards the heart (centripetal) direction, the lower-upper length H below the water surface site of this baffle plate
2the depth of water H of cell body
15 ~ 20%, the width t of the centripetal direction of baffle plate is cell body diameter D
15 ~ 20%.
The effect of invention
In fluidized bed-type biological treatment apparatus of the present invention, when rotating rotary wings, liquid in cell body passes through from the centrifugal force suffered by rotary wings and revolving force, to radiation direction and sense of rotation flowing near the centre of the above-below direction of cell body, and collide the inner peripheral surface of cell body and the rotational flow divided into upwards and downward rotational flow.
Be formed as the liquid of rotational flow upwards, the inner peripheral surface of an edge cell body rotates and rises, and the carrier in liquid is by spread apart.Then, liquid collision baffle plate, and flow upward along this baffle plate, changing direction into centripetal direction when reaching near water surface site, thereafter, with swirl shape flowing, and collecting near the central part near water surface site, then sinking, be back near rotary wings.So, the great majority of carrier rotate while rise together with rising rotating fluid, and in the meantime by spread apart, therefore, along with the whirling current of the centripetal direction near water surface site flows from the periphery (near the inner peripheral surface of cell body) near water surface site swimmingly to central part, then from the central part near water surface site along with katabatic drainage declines.So, carrier can form good circulation in cell body, and the carrier amount that the inner peripheral surface of the cell body near water surface site stops reduces, and improves biological treatment efficiency.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional drawing of the fluidized bed-type biological treatment apparatus involved by embodiment.
Fig. 2 is the II-II line sectional view of Fig. 1.
Fig. 3 is the perspective stereoscopic schematic diagram of the water flow represented in fluidized bed-type biological treatment apparatus.
Fig. 4 is the longitudinal sectional drawing of the fluidized bed-type biological treatment apparatus involved by comparative example 1.
Fig. 5 is the longitudinal sectional drawing of the fluidized bed-type biological treatment apparatus involved by comparative example 2.
Fig. 6 is the chart representing experimental result.
The explanation of Reference numeral
1,1A, 1B fluidized bed-type biological treatment apparatus
2 cell bodies
3 drive shafts
4 rotary wings
5,5A baffle plate
6 process water output magazines
7 spillways
8 former water supplying pipes
Embodiment
Below, with reference to accompanying drawing, embodiment is described.Fig. 1 is the longitudinal sectional drawing of the fluidized bed-type biological treatment apparatus involved by embodiment.Fig. 2 is the horizontal sectional drawing of the II-II line of Fig. 1, and Fig. 3 is the perspective stereoscopic schematic diagram of the water flow represented in fluidized bed-type biological treatment apparatus.
This fluidized bed-type biological treatment apparatus 1 possesses: using the round shape cell body 2 of cylinder axis direction as vertical direction; Be configured at the drive shaft 3 of the shaft core position of this cell body 2; Be fixed on the rotary wings 4 of this drive shaft 3; Only be arranged at the baffle plate 5 on the inner peripheral surface top of cell body 2; Be arranged at the spillway 7 on the top of cell body 2; And process water output magazine 6.With the water surface site WL that namely the overflow water plane (level) of the spillway 7 faced by process water output magazine 6 is in cell body 2.
Baffle plate 5 is the rectangle tabular bodys extended at above-below direction (in this embodiment for vertical direction), and plate face is that the centripetal direction from the inner peripheral surface of cell body 2 to the center of cell body 2 extends.
Preferably in the circumference of cell body 2 with arrangement of baffles 5 at equal intervals, its number is preferably 2 ~ 8, is particularly preferably about 3 ~ 6.
The upper end of baffle plate 5 is positioned at the position higher than water surface site WL, and lower end is positioned at the position lower than water surface site WL.
Baffle plate 5 than water surface site WL more downside length H
2, be preferably the depth of water H of this cell body 2
15 ~ 20%, be particularly preferably 10 ~ 15%.In addition, when the bottom surface of cell body 2 is not plane, using the average depth of cell body 2 as this depth of water H
1.
The width t of the cell body centripetal direction (radial direction) of preferred baffle plate 5 is cell body 2 diameter (internal diameter) D
15 ~ 20%, be particularly preferably about 10 ~ 15%.Such as, in addition, when cell body 2 is not complete round shape, when the diameter of upper and lower is different, using the diameter at water surface site WL place as the diameter D of this cell body 2
1.
As the length H of baffle plate 5
2when being less than above-mentioned scope with width t, the effect forming upper and lower cycling stream can reduce; When being greater than above-mentioned scope, then can become the obstacle of carrier flow.
In this embodiment, rotary wings 4 is using the tabular of plate face as vertical direction, and extends from drive shaft 3 to the diametric(al) of cell body 2.That is, in this embodiment, be provided with 2 rotary wings 4 on 180 ° of reverse directions.But, also more than 3 rotary wings can be set in radiation direction, preferably about 2 ~ 4 usually.
The rotating diameter D of preferred rotary wings 4
2(being the front end distance each other of 2 rotary wings 4 in this embodiment) is cell body 2 diameter D
120 ~ 80%, be particularly preferably about 50 ~ 70%.
Rotary wings 4 is configured near the centre of the above-below direction of cell body 2.Upper limb height (height from cell body bottom surface, the lower same) H of preferred rotary wings 4
3for cell body depth of water H
120 ~ 80%, be particularly preferably about 50 ~ 70%.The H of width up and down of preferred rotary wings 4
4for cell body depth of water H
15 ~ 60%, be particularly preferably about 10 ~ 40%.
The lower edge height H of preferred rotary wings 4
5for cell body depth of water H
120 ~ 80%, be particularly preferably about 30 ~ 50%.
In addition, in this embodiment, be only provided with 1 section of rotary wings 4 in the vertical direction, but also can arrange more than 2 sections.
When arranging the rotary wings of more than 2 sections, the upper limb height of the rotary wings of uppermost is at above-mentioned H
3scope, lowermost the lower edge height of rotary wings at above-mentioned H
5scope, each rotary wings width up and down be aggregated in above-mentioned H
4scope just passable.
In this embodiment, drive shaft 3 hangs from top to prop up and forms, but also can arrange bearing portion in the bottom surface of cell body 2, is come the lower end of supporting driving shaft 3 by this bearing portion.
Although not shown, but be added with bead-type substrate in this cell body 2.
Carrier can adopt any material, but is preferably the gel saccharoid of anti abrasive high molecular crosslink body.
As the material resin of gel carrier, such as, polyolefine, PVA, PEG, (gathering) acrylamide, N-substituted acrylamide, (poly-/methyl) vinylformic acid or its an alkali metal salt, alginic acid, polyoxyethylene (polyalkyleneoxide), (methyl) dimethylaminoethyl acrylate (DMA), Pyranton (DAA) etc. can be enumerated.More specifically, can enumerate: sodium polyacrylate, the multipolymer of sodium acrylate and acrylamide, the terpolymer of the multipolymer of sodium acrylate and acrylamide 2-methyl propane sulfonic acid sodium, sodium acrylate and acrylamide and acrylamide 2-methyl propane sulfonic acid sodium, and three grades of salt (tertiary ammonium salt) of (methyl) dimethylaminoethyl acrylate or the homopolymer of quaternary ammonium or the multipolymer etc. with acrylamide etc.
The median size of carrier is preferably 1mm ~ 5mm, is particularly preferably 1.2mm ~ 3.5mm.When the median size of carrier is less than described scope, carrier becomes difficulty with being separated of water; When being greater than described scope, then become the obstacle of flowing.
The porosity of carrier is preferably 20 ~ 50%, is particularly preferably 30 ~ 40%.When porosity is low, the adhesion of mud is few, and processing efficiency reduces; When porosity height, become bag gas easily.
As the density of carrier, preferably its mean density is 0.96 ~ 1.02g/cm
3, preferably the support density of more than 80% is 0.98 ~ 1.01g/cm
3, be particularly preferably 0.985 ~ 1.00g/cm
3.
For the loading level of carrier, its bulk volume (bulkvolume) is preferably made to reach the amount of 5 ~ 50% relative to the volume of below the water surface site WL of reactive tank.If when the amount of carrier is less than 5%, processing efficiency step-down; When being greater than 50%, stirring power and become excessive.
While make rotary wings 4 rotate, in cell body 2, supply former water (containing organic discharge water) from former water supplying pipe 8, carry out a biological disposal upon.
Preferably the speed adjustment of the drive shaft 3 of rotary wings 4 is reached 100 ~ 200rpm for its G value, be preferably adjusted to about 15 ~ 30rpm.
For the liquid-flow in the cell body 2 when so processing, be described with reference to Fig. 3.
Based on the centrifugal force be subject to from rotary wings 4 and revolving force, liquid in cell body 2 (liquid of processed water and carrier mixing) with radiation direction and with sense of rotation flowing, and collides the inner peripheral surface of cell body 2 and the rotational flow divided into upwards and downward rotational flow near the centre of the above-below direction of cell body 2.
Be formed as the liquid of rotational flow upwards, along the inner peripheral surface of cell body 2, as flechette-type symbol u
1shown in rotate while rise.During this period, the carrier in liquid is by spread apart.Then, liquid collision baffle plate 5, and along this baffle plate 5 as flechette-type symbol u
2shown in flow to top, time near arrival water surface site WL, as flechette-type symbol u
3shown by the direction side of change centripetal direction, thereafter, flow in swirl shape, collect near the central part near water surface site, then sink, be back near rotary wings 4.
On the other hand, be formed as being rotated down flowing fluid near the centre of the above-below direction of cell body 2, as flechette-type symbol d
1the shown inner peripheral surface along cell body 2 rotates while decline, when arriving near cell body bottom surface as flechette-type symbol d
2shown in carry out swirl shape flowing, near the bottom surface central authorities then collecting in cell body 2, soon as flechette-type symbol d
3shown in rise at the immediate vicinity of cell body 2, turn back to rotary wings 4.
In this embodiment, the proportion of carrier is less than about 1 or 1, therefore the great majority of carrier and rising rotating fluid u
1inner peripheral surface together along cell body 2 rotates while rise, in the process by spread apart.Therefore, with the whirling current of the centripetal direction near water surface site WL, flow swimmingly to central part from the periphery (near the inner peripheral surface of cell body 2) near water surface site, then sink along with katabatic drainage from the central part near water surface site WL.So, carrier can be made in cell body 2 to form good circulation, the carrier amount that the inner peripheral surface of the cell body 2 near water surface site WL stops reduces, and biological treatment efficiency improves.
In order to effect involved in the present invention is described, next as comparative example, the flowing of liquid in the comparative example 1 (Fig. 4) that the whole height of cell body arranges baffle plate 5 and the comparative example 2 (Fig. 5) eliminating baffle plate 5 is described.
In the fluidized bed-type biological treatment apparatus 1A of Fig. 4, baffle plate 5A extends to the bottom of cell body 2 from the upside of the water surface.
In this comparative example 1, from rotary wings 4 with radiation direction and with sense of rotation flowing fluid, after the inner peripheral surface arriving cell body 2, be divided into up and down.The great majority of carrier contained in this upwards flowing fluid, rise along baffle plate 5A.So, when carrier does not carry out rotating and only rises, by being attached with the microbial film of carrier, carrier each other aggegation becomes block.When so causing carrier to be formed as bulk, carrier accumulates a large amount of bubbles each other, becomes and is difficult to sedimentation.
In addition, even if gyrate rotating fluid is had an effect to carrier near water surface site WL, carrier does not follow this flowing yet, but stops along the inner peripheral surface of cell body 2 near water surface site WL.Its result, reduces in the ratio of the carrier of cell body 2 internal recycle with the cycling stream in cell body 2, and biological treatment efficiency reduces.
In the fluidized bed-type biological treatment apparatus 1B of Fig. 5, completely baffle plate is not set.In this case, cell body inner peripheral surface is arrived with radiation direction and with sense of rotation flowing fluid and after being divided into flowing up and down from rotary wings 4 to the inner peripheral surface of cell body 2, liquid upwards rotates and rises in the same manner as the situation of Fig. 1 ~ Fig. 2, and therefore carrier is by spread apart.But, when carrier so rotate rise and arrive near water surface site time, because the circumferential flow velocity of rotational flow is large, thus the centrifugal force acting on carrier strengthens, and near water surface site WL, carrier is pushed to the inner peripheral surface of cell body 2 and causes stop.
Therefore, when this Fig. 5, the ratio of carrying out the carrier circulated in cell body 2 also reduces, and biological treatment efficiency reduces.
Below, be described for embodiment and comparative example.
[embodiment 1]
Adopt by the size of each several part according to setting as described below, the fluidized bed-type biological treatment apparatus shown in Fig. 1 ~ Fig. 3, by NO
3the discharge water that-N concentration produces when being the manufacture liquid crystal of 200mg/L is with 1.2m
3/ hr supplies, thus processes.
D
1：1200mm
D
2: 900mm (rotary wings 4)
H
1：2000mm
H
2：180mm
H
3：1180mm
H
4：360mm
H
5：820mm
t：120mm
As carrier, be 1.01g/cm by density
3polyolefin gel carrier (median size 4mm) be filled with 30% of cell body volume.When running rotary wings 4 with 20rpm, the NO of process water
3-N concentration is below 5mg/L, N clearance is more than 98%.
[comparative example 1]
As shown in Figure 4, except baffle plate 5A is arranged to extend to cell body 2 bottom, by the diameter D of rotary wings 4
2be set to beyond 600mm, similarly to Example 1 former water processed, its result, the NO of process water
3-N concentration is 28mg/L, N clearance is 86%.
[comparative example 2]
As shown in Figure 5, except omitting baffle plate, similarly to Example 1 former water is processed, its result, the NO of process water
3-N concentration is 20mg/L, N clearance is 90%.In addition, the diameter D of rotary wings
2adopt the 900mm identical with embodiment 1.
[changing the test of the rotating speed of rotary wings]
In above-described embodiment 1, comparative example 1,2, various change is carried out to the rotating speed of rotary wings, and measures the turnover rate of carrier.
The turnover rate of this carrier is the volume being filled in the carrier that actual flow in the carrier in cell body.The carrier bulk that actual flow is that the carrier swum on the water surface the inner peripheral surface along cell body 2 gathers and tries to achieve its volume, then calculates from the volume of filling carrier total amount and deduct this non-current carrier.
This result is shown in Fig. 6.Can confirm from Fig. 6: embodiment 1 is higher than the turnover rate of comparative example 1 all the time, and when rotary wings rotating speed is about more than 15rpm, compared with comparative example 2, its turnover rate is high.
[embodiment 2]
Except by the length H below the water surface site of baffle plate 5
2be adjusted to 100mm (depth of water H
15%) beyond, similarly to Example 1 former water is processed, its result, process water NO
3-N concentration is below 5mg/L, N clearance is more than 98%.
[embodiment 3]
Except by the length H below the water surface site of baffle plate 5
2be adjusted to 400mm (depth of water H
120%) beyond, similarly to Example 1 former water is processed, its result, process water NO
3-N concentration is below 5mg/L, N clearance is more than 98%.
[comparative example 3]
Extend to except making the lower end of baffle plate 5 and to be in same level with rotary wings 4, by the length H below the water surface site of baffle plate 5
2be adjusted to 1180mm (depth of water H
159%) beyond, similarly to Example 1 former water is processed, its result, process water NO
3-N concentration is 25mg/L, N clearance is 87.5%.
By these embodiments and comparative example clearly known: according to the embodiment only arranging baffle plate on the top of cell body inner peripheral surface, its N clearance is higher than comparative example.
Claims (2)
1. a fluidized bed-type biological treatment apparatus is from containing NO by biological treatment
3the fluidized bed-type biological treatment apparatus of N is removed in the discharge water of-N,
Be filled with carrier in the cell body of described fluidized bed-type biological treatment apparatus, in the way of the above-below direction of cell body, be configured with the rotary wings for stirring this carrier, it is characterized in that,
Only baffle plate is set on the top of cell body inner peripheral surface,
The mean density of described carrier is 0.96 ~ 1.02g/cm
3,
Described baffle plate is above-below direction extends while, the tabular extended from cell body inner peripheral surface towards centripetal direction,
Lower-upper length H below the water surface site of this baffle plate
2cell body depth of water H
15 ~ 20%,
The width t of the centripetal direction of this baffle plate is cell body diameter D
15 ~ 20%,
The upper end of this baffle plate is positioned at the position higher than water surface site, and lower end is positioned at the position lower than water surface site,
The height H of upper limb from cell body bottom surface of described rotary wings
3for cell body depth of water H
150 ~ 70%, the height H of lower edge from cell body bottom surface
5for cell body depth of water H
130 ~ 50%.
2. fluidized bed-type biological treatment apparatus as claimed in claim 1, it is characterized in that, the median size of described carrier is 1 ~ 5mm, and the carrier filling ratio in cell body is 5 ~ 50%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009228114A JP5493662B2 (en) | 2009-09-30 | 2009-09-30 | Fluidized bed biological treatment equipment |
| JP2009-228114 | 2009-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102030403A CN102030403A (en) | 2011-04-27 |
| CN102030403B true CN102030403B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010288067.1A Active CN102030403B (en) | 2009-09-30 | 2010-09-17 | Fluidized bed-type biological treatment apparatus |
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| Country | Link |
|---|---|
| JP (1) | JP5493662B2 (en) |
| KR (1) | KR101242785B1 (en) |
| CN (1) | CN102030403B (en) |
| TW (1) | TWI414490B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5636968B2 (en) | 2011-01-07 | 2014-12-10 | 栗田工業株式会社 | Fluidized bed biological treatment equipment |
| KR101578702B1 (en) | 2013-10-04 | 2015-12-23 | 안소현 | Management system and method for intelligent terminal |
| JP6764221B2 (en) * | 2015-07-22 | 2020-09-30 | 株式会社日立製作所 | Stirrer |
| JP7207894B2 (en) * | 2018-08-09 | 2023-01-18 | オルガノ株式会社 | Anaerobic fluidized bed biological treatment apparatus and anaerobic fluidized bed biological treatment method |
| JP2020040053A (en) * | 2018-09-13 | 2020-03-19 | 栗田工業株式会社 | Fluidized bed type biological treatment apparatus |
| CN109607724B (en) * | 2019-02-21 | 2021-11-09 | 新疆德安环保科技股份有限公司 | Integrated flocculation and precipitation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001149992A (en) * | 1999-11-29 | 2001-06-05 | Hitachi Kiden Kogyo Ltd | Method for treating sewage |
| CN2479009Y (en) * | 2001-04-04 | 2002-02-27 | 上海华业环保有限公司 | High-efficiency reactor for treatment of non-degradable industrial waste water |
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| JPS5372762U (en) * | 1976-11-19 | 1978-06-17 | ||
| DE3516027A1 (en) * | 1985-05-04 | 1986-11-06 | Huels Chemische Werke Ag | STIRRING SYSTEM AND METHOD FOR FASTENING LIQUIDS |
| DE3821033A1 (en) * | 1988-06-22 | 1989-12-28 | Huels Chemische Werke Ag | STIRRING BOILER WITH RADIAL CONVEYOR AND AT LEAST ONE ELECTRIC BURNER AND METHOD FOR MIXING LIQUIDS WITH THE HELP OF THIS STIRRING BOILER |
| JPH0210787A (en) * | 1988-06-29 | 1990-01-16 | Fumio Inaba | Semiconductor light emitting device |
| JP3136901B2 (en) * | 1994-05-30 | 2001-02-19 | 日本鋼管株式会社 | Wastewater treatment method |
| JPH0910787A (en) * | 1995-04-27 | 1997-01-14 | Chiyoda Corp | Fluidized bed type waste water treatment method and apparatus |
| JP2000254682A (en) * | 1999-03-12 | 2000-09-19 | Suido Kiko Kaisha Ltd | Biological reactor |
| KR100339017B1 (en) | 2000-04-03 | 2002-05-31 | 한상배 | Advanced Wate Water Treatment System of Package Type |
| JP2002143889A (en) | 2000-11-10 | 2002-05-21 | Nec Ameniplantex Ltd | Waste water treatment equipment |
| JP2003062594A (en) * | 2001-08-27 | 2003-03-04 | Kansai Paint Co Ltd | Method and apparatus for treating organic waste water containing high concentration suspended substance |
| JP2004188413A (en) * | 2002-11-25 | 2004-07-08 | Taiho Ind Co Ltd | Denitrification method and denitrification apparatus of waste water and stirring apparatus therefor |
| CN200998649Y (en) * | 2006-12-19 | 2008-01-02 | 王小华 | Agitating mechanism |
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2009
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- 2010-09-09 KR KR20100088371A patent/KR101242785B1/en active IP Right Grant
- 2010-09-17 CN CN201010288067.1A patent/CN102030403B/en active Active
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001149992A (en) * | 1999-11-29 | 2001-06-05 | Hitachi Kiden Kogyo Ltd | Method for treating sewage |
| CN2479009Y (en) * | 2001-04-04 | 2002-02-27 | 上海华业环保有限公司 | High-efficiency reactor for treatment of non-degradable industrial waste water |
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| 废水处理生物流化床中载体选择的研究进展;曹正成等;《青海环境》;20041225;第14卷(第4期);第158-161页 * |
| 废水处理生物流化床反应器内构件研究进展;陈小光等;《中国沼气》;20081220;第26卷(第6期);第9页第1栏倒数第1段，图3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5493662B2 (en) | 2014-05-14 |
| KR20110035885A (en) | 2011-04-06 |
| TWI414490B (en) | 2013-11-11 |
| TW201111298A (en) | 2011-04-01 |
| CN102030403A (en) | 2011-04-27 |
| KR101242785B1 (en) | 2013-03-12 |
| JP2011072936A (en) | 2011-04-14 |
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