CN205773603U - Spiral aeration tank - Google Patents
Spiral aeration tank Download PDFInfo
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- CN205773603U CN205773603U CN201620088888.3U CN201620088888U CN205773603U CN 205773603 U CN205773603 U CN 205773603U CN 201620088888 U CN201620088888 U CN 201620088888U CN 205773603 U CN205773603 U CN 205773603U
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- aeration tank
- aeration
- spiral
- efflux aerator
- sewage
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- 238000005273 aeration Methods 0.000 title claims abstract description 196
- 238000005276 aerator Methods 0.000 claims abstract description 53
- 239000010865 sewage Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 210000005056 cell body Anatomy 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 37
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 abstract description 23
- 239000001301 oxygen Substances 0.000 abstract description 23
- 239000007788 liquid Substances 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 14
- 238000012546 transfer Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 3
- 239000010802 sludge Substances 0.000 description 19
- 238000013461 design Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 239000012071 phase Substances 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BFZUFHPKKNHSAG-UHFFFAOYSA-N [N].[P].[S] Chemical compound [N].[P].[S] BFZUFHPKKNHSAG-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The utility model discloses spiral Aeration tank, using multiple efflux aerator cooperation to carry out aeration, efflux aerator jet exit is distributed along certain circumferencial direction, and jet exit direction and radial direction are in angle, sewage in Aeration tank forms rotational flow, and overall flow field helically rises shape；Sewage is flowed out by Aeration tank outlet after aeration；This aeration method increases the path of drainage flow in aeration process, and the contact area of gas-liquid two-phase increases, and adds total transfer ratio of Aeration tank oxygen；On the other hand this aeration method is because of flow distribution evenly, and locally region, slough reduces, thus adds effective aerated space, improves aeration efficiency, improves the volume utilization of Aeration tank simultaneously, saves occupation of land space；Spiral formula jet-flow aeration method of the present utility model, can improve coefficient of oxygen utilization, and the aeration effect simultaneously making spiral Aeration tank is strong, simple in construction, reaction efficiency high, floor space is little, low cost.
Description
Technical field
This utility model relates to applying aeration system technical field, is specifically related to spiral Aeration tank.
Background technology
Along with the development of China's industry, the quantity of wastewater effluent in the whole nation increases the most year by year, and wherein most sewage is unprocessed to be directly discharged in rivers lake, causes water area water-quality pollution problem to become increasingly conspicuous.For the sustainable development of environment, sewage is carried out purified treatment and is increasingly paid attention to by country.Within 2011, national " 863 " plans to propose the project of " carbon source and nitrogen phosphorus sulfur component resource technology in sewage " in technical field of resource environments, the most also in " regional environmental quality develops and Environmental capacity " has been listed primary study direction in country " 973 ".
In sewage disposal, the commonly used activated sludge process of World Developed Countries controls the pollution of water body.Activated sludge process is a kind of two stage biological processing method most widely used in our times various countries, has the advantages such as disposal ability is high, effluent quality is good.The principle of activated sludge process be adsorbed by aerobic microbiological and the Organic substance that aoxidizes in sewage thus reach to purify the purpose of sewage.Therefore, aerobic microbiological in Aeration tank and the key technology that sufficient oxygen haptoreaction is sewage disposal how are enable.
Aeration tank, as activated sludge reactor, is the nucleus equipment of activated Sludge System, and the activated Sludge System clean-up effect to sewage depends greatly on the performance of Aeration tank function.Aeration tank of a great variety, is divided by aeration method and can be divided into blast aeration tank, mechanical aeration basin, machinery air blast mixed aeration pond and jet aeration tanks.
Blast aeration tank mostly is rectangular gallery shape, and it is mainly characterized by produce bubble, single isolated bubbles gas liquid interfacial area greatly, but its structure is complicated, and floor space is big, atmospheric pressure lost is too high compared with big, bubble distribution blocking uneven, easy, design and maintenance cost.Mechanical aeration basin mostly is cylindrical or square, and it is mainly characterized by simple in construction, is not easily blocked, safeguards simple, but it cannot produce a large amount of bubble, and bubble distribution is uneven, reduces reaction efficiency.
Traditional Aeration tank many employings blast aeration system and mechanical aeration system.Blast aeration system its air-diffuser generally porous material is also arranged on gallery bottom side, accumulation over time, and the particulate pollutant in sewage is easily deposited in bottom Aeration tank, blocks air-diffuser.It addition, traditional plug-flow aeration tank is rectangular gallery shape, according to sewage load, typically will use 2-5 gallery, ensure dwell time of sewage, floor space is relatively large, and global design and maintenance cost are too high.Mechanical aeration system typically uses machinery to rotate and produces bubble, and its microbubble amount is relatively low, and W-response is inefficient.And jet aeration tanks utilizes jet shear gas to produce bubble, the shortcoming which solving tradition Aeration tank, there is the advantage such as simple in construction, floor space is little, be not easily blocked, small investment.And once Aeration tank is started working, drive is deposited in the particulate pollutant bottom Aeration tank and moves together by the high-speed liquid injected by jet-flow aeration equipment, does not haves the situation of blocking.
Tradition Aeration tank has the shortcomings such as aeration effect is poor, floor space is big, operation cost is high, therefore this utility model is by the gas-liquid two-phase flow field characteristic gentle phase regularity of distribution and the analysis and research of oxygen transmission characteristic in Aeration tank, it is proposed that a kind of brand-new Aeration tank form and aeration method.
Utility model content
The purpose of this utility model is to overcome the tradition deficiencies such as Aeration tank reaction efficiency is low, gas holdup is low, mixing uniformity is poor, coefficient of oxygen utilization is low, floor space is big, it is provided that a kind of spiral Aeration tank improving the reaction efficiency of sludge treating system, raising coefficient of oxygen utilization and aeration effect, reduction floor space spiral aeration method and utilizing the method.
The spiral Aeration tank that this utility model provides, including Aeration tank cell body, efflux aerator, flow regulator, water pump, effluent trough, flow regulator is connected with efflux aerator through Aeration tank cell body by water pipe, is also to be connected by water pipe between flow regulator with water pump；Described effluent trough is arranged on Aeration tank cell body top, and sewage flows out from Aeration tank cell body top；Described efflux aerator has several, it is arranged in Aeration tank bottom for the center of circle along certain circumferencial direction with the central point of Aeration tank, each efflux aerator can be equal or different to the distance at center, each aerator and pool center (each angle can be equal or different) at a certain angle, with the horizontal angle upwards, the gas during efflux aerator injects pond during aeration makes sewage spiral to the jet incident direction of each efflux aerator.
Further, described Aeration tank cell body is the column of symmetric shape.
Preferred as one, described Aeration tank cell body is cylinder.
Preferred as one, described efflux aerator has n (typically taking 3～4 to be advisable), and each efflux aerator is equal with the angle of pool center point.
Preferred as one, the jet incident direction direction along the horizontal plane of described efflux aerator.
This utility model uses above technical scheme compared with prior art, has following technical effect that
Spiral Aeration tank of the present utility model, it is distributed by the circumferencial direction of efflux aerator, need not gallery just can make sewage in violent spiral state in Aeration tank, sewage movement travel in Aeration tank is added in the case of identical inlet flow rate, increase the overall contact area of gas-liquid two-phase, improve dissolved oxygen speed and reaction efficiency；On the other hand spiral aeration method enhances the turbulence intensity of gas-liquid two-phase, and flow field is more uniform, beneficially being sufficiently mixed of gas-liquid two-phase, and increases Aeration tank effective aeration volume, increases the transfer ratio of oxygen in Aeration tank, improve sewage reaction efficiency；Activated sludge in this Aeration tank will not deposit in dividing plate or bottom simultaneously, and be as sewage and constantly move, and is sufficiently mixed with sewage, is fully contacted with the dissolved oxygen in water, enhances the activity of activated sludge, improves the treatment effeciency of activated sludge process.Therefore the Aeration tank of this utility model spiral aeration method is used can to improve the reaction efficiency of active sludge processing system in whole Aeration tank, reduce floor space, reduction energy consumption and operating cost.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further detail:
Fig. 1 is spiral aeration method and the structure schematic top plan view of spiral Aeration tank of utility model；
Fig. 2 is spiral aeration method and the structure schematic front view of spiral Aeration tank of utility model；
Fig. 3 is spiral aeration method and the interior flow field streamline schematic diagram of spiral Aeration tank of utility model；
Fig. 4 is the aeration zone schematic diagram of vertical aeration bottom common Aeration tank；
Fig. 5 is the aeration zone schematic diagram of common Aeration tank bottom level aeration；
Fig. 6 is spiral aeration method and the aeration zone schematic diagram of spiral Aeration tank of utility model；
Fig. 7 is spiral aeration method and the aeration zone schematic top plan view of spiral Aeration tank of utility model；
In figure, token name claims: 1, Aeration tank cell body, and 2, efflux aerator, 3, flow regulator, 4, water pump, 5, effluent trough, 6, secondary sedimentation tank, 7, discharge pipeline；α, efflux aerator glancing incidence angle, β, efflux aerator along the circumferential direction distribution angle, γ, efflux aerator normal incident angle, n, efflux aerator are along the circumferential direction distributed number, H, Aeration tank height, h, each efflux aerator centre-height, rn, each jet exit distance away from center (outlet of each aeration can be different)；I, sewage after pretreatment, II, the mixed liquor of aeration, III, the mixed liquor flowed out by Aeration tank, the sewage after IV, process, V, returned sludge, VI, the mud of discharge system.
Detailed description of the invention
This utility model provides spiral aeration method and spiral Aeration tank, and for making the purpose of this utility model, technical scheme and effect are clearer, clearly, and referring to the drawings and give an actual example and further describe this utility model.Should be appreciated that and described herein be embodied as only in order to explain this utility model, be not used to limit this utility model.
With reference to Fig. 1, Fig. 2, in this utility model example, a kind of spiral Aeration tank with spiral flow field and spiral aeration specifically include that Aeration tank cell body 1, efflux aerator 2, flow regulator 3, water pump 4, effluent trough 5, secondary sedimentation tank 6, discharge pipeline 7.
Efflux aerator 2 is arranged on bottom Aeration tank, and jet-flow aeration distance bottom level is h.The jet direction of efflux aerator and α the most at a certain angle.Aerator is along being distributed along certain circumferencial direction, and the total number of aerator is n (n >=2).β at a certain angle (β=2 π/n) between two adjacent aerators.Particularly, when efflux aerator is 3 or 4, and each efflux aerator is equal with the angle of pool center point, angle is 120 ° or 90 °, it reaches a reasonable effect in the cost proportioning of aerated reaction efficiency and equipment, i.e. uses less equipment can realize a higher reaction efficiency.Flow regulator 3 and water pump 4 are arranged on the outside of spiral Aeration tank cell body 1, and flow regulator 3 is connected with efflux aerator 2 through Aeration tank cell body 1 by water pipe, is also to be connected by water pipe between flow regulator 3 with water pump 4.Sewage is after top is overflowed.The liquid flowed out from effluent trough 5 precipitates secondary sedimentation tank 6, and clear water outflow system, in the activity sludge reflux of sedimentation to Aeration tank.It is provided with discharge pipeline 7 bottom spiral Aeration tank, is mainly used in draining and the spoil disposal of Aeration tank.
Spiral aeration in this example mainly has following steps:
1), utilize water pump 4 to provide power the sewage I through pretreatment, regulate suitable pressure and flow according to engineering demand by flow regulator 3, enter in efflux aerator 2, and in efflux aerator, form the fluid of high-voltage high-speed；
2), in efflux aerator 2 due to the flowing Involving velocity of high-speed liquid, form local depression district, thus Air Entrainment come in, by the collision effect that the shearing of fluid and stretching action and bubble are mutual, form gas and liquid mixture；
3), gas and liquid mixture by the outlet of efflux aerator 2, inject Aeration tank along certain circumferencial direction, and roll the activated sludge in Aeration tank, thus in spiral Aeration tank, form activated sludge, air, aeration mixed liquor I I of sewage；
Flow Q with efflux aerator outlet0, efflux aerator outlet area A0, jet exit velocity u0Parameter configuration inject Aeration tank along certain circumferencial direction, distance r in the heart in efflux aerator and Aeration tank1、r2…rn, can equal can also be unequal.And roll the activated sludge in Aeration tank, thus in spiral Aeration tank, form activated sludge, air, the aeration mixed liquor of sewage；Its concrete numerical value determines according to following methods:
Efflux aerator rate of discharge Q0Design discharge Q with Aeration tankdRelevant, Q0=Qd/ n, wherein n is the efflux aerator number being distributed along certain circumferencial direction.The design discharge of Aeration tank is mainly relevant with the intraday effect of the raw sewage processed and maximum flow per hour, require to make sewage have in Aeration tank enough aerations and response time (as in engineering when the design hydraulic detention time of Aeration tank is at more than 6h, using intraday effect as the design discharge of Aeration tank；When hydraulic detention time is less than 6h, use the maximum stream flow design discharge as Aeration tank of raw sewage).Aeration tank volumeWherein NsFor BOD mud load rate, SaBOD for raw sewage5Value, CsolidFor mixed genetic-neural network in Aeration tank.And the design hydraulic detention time requiring Aeration tank meets certain design and requires (requiring not less than 2 hours as in engineering).Volume V according to Aeration tankAB, and the floor space combining Practical Project determines the dimensional parameters (basal diameter D, highly H) of Aeration tank.Utilize numerical simulation to calculate and determine that the area that efflux aerator exports is A0It is u with jet exit velocity0, the area of efflux aerator outlet and jet exit velocity meet Aeration tank upper end mean flow rate and meet design requirement (requiring not less than 0.2m/s as in engineering).
4), aeration mixed liquor I I rotate in Aeration tank, rise, finally overflow from the effluent trough 5 of Aeration tank upper end；
5), after mixed liquor I II, by Aeration tank flowed out carries out mud through secondary sedimentation tank 6, water separates, the sewage IV outflow system after process, and a part of V of activated sludge precipitated returns into Aeration tank again, unnecessary VI then discharges system.
Spiral aeration whole during, the sewage in spiral Aeration tank rises flowing along jet direction in rotating, and overall flow field presents spiral formula structure.In above-mentioned steps, each efflux aerator discharge area is A0, jet exit velocity is u0, flow is Q0。
With reference to Fig. 3, in this utility model spiral aeration method and spiral Aeration tank, sewage, in efflux aerator injects Aeration tank, rotates along jet direction in pond and rises, after overflow through top effluent trough 5.Sewage in whole Aeration tank helically rises shape.In Aeration tank, the treatment effeciency of sewage is mainly the most relevant with the content of oxygen in Aeration tank, and in Aeration tank, the diffusion of oxygen and transfer process follow the basic law that material spreads, and i.e. follows Fick (Fick) law:
In formula,For the diffusion velocity of material, the amount of material i.e. passed through within the unit interval；
DLFor the diffusion coefficient of material, the i.e. material diffusivity in certain medium；
A is contact interface area；
C is material concentration；
X is the path of diffusion process；
For the concentration change value in Concentraton gradient, i.e. unit path distance.
From Fick (Fick) law, the diffusion of oxygen is relevant with diffusion coefficient, contact area, oxygen concentration etc. to transfer velocity.Simultaneously according to the double-film theory of diffusion process, above formula can be converted into:
In formula,For dissolved oxygen concentration pace of change in liquid phase main body i.e. oxygen transfer velocity；
CSFor saturated dissolved oxygen concentration value；
XfFor thickness of liquid film, this value is extremely low；
V is the main volume of liquid phase.
Here total oxygen transfer coefficient K is introducedLa, orderAbove formula can turn to:
From formula 3, under conditions of inlet oxygen concentration is certain, the transfer velocity of oxygen to be improvedCan be by improving KLaMethod realize.Spiral aeration method of the present utility model and Aeration tank are mainly by improving total oxygen transfer coefficient KLaMethod improve the reaction efficiency of Aeration tank.On the one hand this utility model provides quick incidence rate by efflux aerator, increases turbulence intensity and the shear strength strengthening sewage liquid phase main body, thus reduces thickness of liquid film, accelerates the renewal of gas-liquid interface.On the other hand by the circumferencial direction layout of efflux aerator in Aeration tank, make the sewage in Aeration tank produce to rotate, so that the flow field in Aeration tank presents spiral formula structure, while strengthening turbulence intensity and shear strength, increase the forwarding route of sewage, add the overall contact area of liquid phase.
With reference to Fig. 3 it is found that on arbitrary cross section in spiral Aeration tank, air microbubble mainly has the component velocity in three directions, speed u vertically upwardz, radial velocity urWith circumferential speed uθ.Then the air microbubble distance that moves ahead in spiral Aeration tank is:
Wherein, ω is the angular velocity of rotation on cross section, rBDistance for microbubble distance center.
The air microbubble total contact interface area in spiral Aeration tank is:
Wherein, ABSurface area for air microbubble.
For traditional Aeration tank, because it does not rotate, and angular velocity of rotation is 0, and circumferential speed is 0, thus the radial velocity also not produced because of rotary centrifugal force.So the speed of air microbubble is mainly the speed v of vertical processZ.So total contact interface area of air microbubble is:
A=∫ ABvZdt (6)
By formula 5 and formula 6 it appeared that spiral Aeration tank of the present utility model considerably increases the contact interface area of sewage and activated sludge and oxygen, thus substantially increase total oxygen transfer coefficient in Aeration tank, improve oxygen transfer velocity, enhance the reaction efficiency of Aeration tank.
On the other hand, the tubulence energy k of fluid and turbulence intensity T in Aeration tankiIt is respectively as follows:
Wherein: the turbulence pulsation speed that u ' is fluid,
u′x、u′y、u′zIt is respectively the turbulence pulsation speed in three directions of fluid,
U is the time average velocity of fluid.
By formula 7 and formula 8 it is found that for spiral Aeration tank, because more than tradition Aeration tank rotational flows, its flow disturbance is relatively big, and its turbulence pulsation is relatively large, so its tubulence energy and turbulence intensity are bigger.Again because of thickness of liquid film XfIt is inversely proportional to the turbulence intensity of fluid, so the thickness of liquid film in aeration process is relatively low in rotating Aeration tank.
With reference to Fig. 4, Fig. 5, Fig. 6, Fig. 7, Aeration tank of the present utility model and spiral aeration method thereof, Aeration tank is injected after sewage and gas mixing, mixed liquor in Aeration tank through stretching, the shear action of rotational flow field, effective aeration zone is made circumferentially to be stretched, expand, thus increase effective aeration zone, reduce slough and invalid region, thus increase effective aeration volume utilization of Aeration tank.Under equal aeration effect, spiral Aeration tank reduces the floor space of equipment.
In order to prove that spiral formula flow field structure has carried out Study on Numerical Simulation to Aeration tank uniformity and the lifting of reaction efficiency, the method for this utility model employing CFD, and analyzed its mechanism and characteristic spiral aeration method further.Calculate be distributed uniformly and circumferentially by three aerators, incident angle α be 30 °, as a example by vertical incidence angle γ is 0 °, use Euler-Euler multiphase flow computational methods, and consider microbubble drag (drag force) in the liquid phase and body force effect.Choosing jet incidence central cross-section and height for entrance height and height isThree cross sections phase concentrations distribution be analyzed research.By analyzing it is found that gas phase circumferentially spreads toward downstream after efflux aerator penetrates, the Gas distribution in Aeration tank is relatively uniform, and central area is due to the existence of low regime, and its phase concentrations is relatively low.And its phase concentrations of traditional Aeration tank is concentrated mainly on the region that center is the narrowest and small, the gas phase in each cross section the most only concentrates on center, and its gas-liquid mixed is poor.Under different aeration methods, in Aeration tank, the gas-liquid mixed efficiency on differing heights is as shown in table 1, compared with the Aeration tank of non-helical aeration method, uses its mixing efficiency of Aeration tank of spiral aeration method of the present utility model to have and is obviously improved.
The different aeration method gas-liquid mixed efficiency comparative of table 1
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.Multiple amendment to these embodiments will be apparent from for those skilled in the art, and generic principles defined herein can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (5)
1. spiral Aeration tank, including Aeration tank cell body, efflux aerator, flow regulator, water pump, effluent trough, flow regulator is connected with efflux aerator through Aeration tank cell body by water pipe, is also to be connected by water pipe between flow regulator with water pump；Described effluent trough is arranged on Aeration tank cell body top, and sewage flows out from Aeration tank cell body top；It is characterized in that: described efflux aerator has several, along the circumferential direction it is arranged in bottom Aeration tank centered by the central point of Aeration tank, the jet incident direction of each efflux aerator makes sewage spiral with the horizontal certain angle, the mixed liquor during efflux aerator injects pond during aeration.
Spiral Aeration tank the most according to claim 1, it is characterised in that: described Aeration tank cell body is the column of symmetric shape.
Spiral Aeration tank the most according to claim 2, it is characterised in that: described Aeration tank cell body is cylinder.
Spiral Aeration tank the most according to claim 1, it is characterised in that: described efflux aerator has three or four, and each efflux aerator is equal with the angle of pool center point, and angle is 120 ° or 90 °.
Spiral Aeration tank the most according to claim 1, it is characterised in that: the jet incident direction of described efflux aerator and the angle of horizontal plane are 0 °, direction the most along the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620088888.3U CN205773603U (en) | 2016-01-28 | 2016-01-28 | Spiral aeration tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620088888.3U CN205773603U (en) | 2016-01-28 | 2016-01-28 | Spiral aeration tank |
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| CN205773603U true CN205773603U (en) | 2016-12-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621604A (en) * | 2016-01-28 | 2016-06-01 | 南京航空航天大学 | Spiral aeration method and spiral aeration tank |
| PL424861A1 (en) * | 2018-03-13 | 2019-09-23 | Rafał Lusina | Biological sewage treatment plant |
-
2016
- 2016-01-28 CN CN201620088888.3U patent/CN205773603U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621604A (en) * | 2016-01-28 | 2016-06-01 | 南京航空航天大学 | Spiral aeration method and spiral aeration tank |
| CN105621604B (en) * | 2016-01-28 | 2019-04-19 | 南京航空航天大学 | Spiral aeration method and spiral aeration tank |
| PL424861A1 (en) * | 2018-03-13 | 2019-09-23 | Rafał Lusina | Biological sewage treatment plant |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20190419 |
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| AV01 | Patent right actively abandoned |