CN207811349U - Continuous flow biological aerated filter - Google Patents
Continuous flow biological aerated filter Download PDFInfo
- Publication number
- CN207811349U CN207811349U CN201721890679.1U CN201721890679U CN207811349U CN 207811349 U CN207811349 U CN 207811349U CN 201721890679 U CN201721890679 U CN 201721890679U CN 207811349 U CN207811349 U CN 207811349U
- Authority
- CN
- China
- Prior art keywords
- pond body
- sand device
- water
- biological aerated
- aerated filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000001301 oxygen Substances 0.000 claims abstract description 49
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 49
- 238000005273 aeration Methods 0.000 claims abstract description 43
- 239000004576 sand Substances 0.000 claims abstract description 43
- 239000010865 sewage Substances 0.000 claims abstract description 40
- 239000000706 filtrate Substances 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims abstract description 17
- 244000005700 microbiome Species 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 210000005056 cell body Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 239000000126 substance Substances 0.000 description 10
- 230000008859 change Effects 0.000 description 6
- 238000000746 purification Methods 0.000 description 5
- 239000003643 water by type Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 239000012223 aqueous fraction Substances 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000007102 metabolic function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000010977 unit operation Methods 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
Abstract
The utility model discloses a kind of continuous flow biological aerated filter, including pond body, several being set in pond body are used to carry sand device by what the filtrate for being deposited on pool bottom was promoted to that preset height spilt again, it is set to the water distributor in pond body and for sewage to be discharged, and it is extended to outside pond body in pond body and for each aeration tube for carrying sand device region and spraying oxygen in pond body, the entrance of aeration tube is connected with the air outlet of frequency conversion Aeration fan, it is each to carry the dissolved oxygen instrument that several are attached on sand device for current dissolved oxygen content in detection cell body, and each dissolved oxygen instrument is connect with the controller signals of frequency conversion Aeration fan, so that the oxygen content in the air output of controller control frequency conversion Aeration fan is located within the scope of the microorganism high activity in filtrate.The utility model can be on the basis of making biological aerated filter persistently run without interruption for a long time, without carrying out shutdown backwash operation, while ensureing higher filtrate activity and sewage treating efficiency.
Description
Technical field
The utility model is related to technical field of sewage, more particularly to a kind of continuous flow biological aerated filter.
Background technology
With the development of Chinese mechanical industry, more and more mechanical equipments have been used widely.
In sewage treatment industry, various sewage disposal devices have been popularized, it is common include air floatation machine, sludge dewatering equipment,
Centrifuge, aerator and Microfilter etc..The method that sewage disposal device handles sewage can be divided into physics according to its effect
Three kinds of method, bioanalysis and chemical method.Wherein, Physical mainly utilizes the non-solubility substance in physical action separation sewage,
Do not change chemical property in processing procedure, there are commonly Gravity Separations, centrifugation, reverse osmosis, air supporting etc..Physical handles structure
Build the situation that object is relatively simple, economic, big for villages and small towns water body capacity, self-purification capacity is strong, sewage disposal degree is of less demanding.Biology
Method utilizes the metabolic function of microorganism, will be oxidized to stable nothing in the decomposition of the organic matter of dissolving or colloidal state in sewage
Machine substance makes to purify the sewage, and there are commonly activated sludge processes and biofilm.Chemical method be using chemical reaction effect come
The method of the dissolving substance or colloidal substance of processing or recycling sewage, is chiefly used in industrial wastewater, there are commonly Coagulation Method, neutralizes
Method, oxidation-reduction method, ion-exchange etc..It is method of chemical treatment high treating effect, costly, it is multi-purpose to make going out after biochemical treatment
Water further processes, and improves effluent quality.
Wherein, biological sewage facture due to treatment effect preferably, the features such as treatment effeciency is higher be widely used, and be aerated
Biofilter is exactly the common device of biological sewage facture.Currently, when traditional biological aerated filter is run, pass through microorganism
It is degraded to pollutants such as organic matters in sewage, retention processing, and the activity of microorganism is very big by such environmental effects, most
Main influence factor is oxygen, it is therefore desirable to constantly it is passed through air toward pond body in, the interior oxygen containing high level of air,
Breathing is provided for the microorganism on filtrate in pond body to ensure.However, biological aerated filter in the prior art, before unit operation
Each item data of aeration tube is set, and with the operation of sewage disposal, source of sewage constantly changes, micro- on filtrate
Biological local environment also constantly changes, and activity is fluctuated, and purification efficiency cannot keep for a long time efficiently, be unfavorable for sewage
Quick processing.Meanwhile when traditional biological aerated filter operation, after sewage is by filter material layer, pollutant quilt that water body contains
Filter material layer retains, and the biodegradable conversion adhered on filtrate, meanwhile, the organic matter and predetermined substance of dissolved state are also gone
It removes, generated sludge is retained in filter layer, and the water of purification is only allowed to pass through.With the operation of biological aerated filter, filler
Thickening for the solid matter that shuts off and biomembrane, will all block the hole between filtrate, influence water flux, for this purpose, existing
Filtrate must be timed backwash by having in technology.However, traditional biological aerated filter is during being backwashed,
After the operation that biological aerated filter must be suspended, backwash operation could be successfully carried out, this will make sewage treating efficiency
At adverse effect.
Therefore, how on the basis of so that biological aerated filter is persistently run without interruption for a long time, ensure higher filtrate activity
And sewage treating efficiency, it is those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of continuous flow biological aerated filter, biological aerated filter can be kept long-term
On the basis of lasting uninterrupted operation, without carrying out backwash operation, while ensureing higher filtrate activity and sewage treating efficiency.
In order to solve the above technical problems, the utility model provides a kind of continuous flow biological aerated filter, including pond body, setting
In several in the pond body for being cleaned again after the filtrate for being deposited on the pool bottom is promoted to preset height
What is spilt carries sand device, the water distributor for introducing sewage raw water and being vented in the pond body, and from the pond
It is extended in vitro in the pond body and for each aeration for carrying sand device region and spraying oxygen in the pond body
Pipe, the entrance of the aeration tube are connected with the air outlet of frequency conversion Aeration fan, and each described carry is attached with several on sand device
Dissolved oxygen instrument for detecting current dissolved oxygen content in the pond body, and each dissolved oxygen instrument is aerated wind with the frequency conversion
The controller signals of machine connect, so that the oxygen content that the controller controls in the air output of the frequency conversion Aeration fan is located at filter
Within the scope of microorganism high activity in material.
Preferably, the other end of the aeration tube is provided with several branch pipes, and each branch pipe corresponds to wherein one respectively
Sand device is carried described in a, and the exit of each branch pipe is both provided with the automatically controlled throttle valve for adjusting gas output, it is each described
Automatically controlled throttle valve is connect with corresponding dissolved oxygen instrument signal respectively.
Preferably, further include being attached to each described carry on the outer wall of sand device, for detecting water temperature in presently described pond body
Temperature sensor, and each temperature sensor is connect with the controller signals of the frequency conversion Aeration fan.
Preferably, the quantity of the water distributor is identical as the quantity for carrying sand device, and corresponds；Each water distributor
For carrying out circumferential water outlet around corresponding sand device that carries.
Preferably, the distributing water room for introducing sewage is provided with above the pond body, and the distributing water room passes through several
Water pipe is crossed to be connected to each water distributor.
Preferably, the water inlet that water pipe is crossed described in each is both provided with weir plate, and offers diameter on each weir plate
Adjustable flowing hole.
Continuous flow biological aerated filter provided by the utility model includes mainly pond body, carries sand device, water distributor, aeration
Pipe, frequency conversion Aeration fan and dissolved oxygen instrument.Wherein, can be arranged simultaneously in pond body it is multiple carry sand device, each sand device that carries is born respectively
The side waters in pond body is blamed, the filtrate of flowing has been each filled in each side waters in pond body, and each carries sand device then by it
The deposition filtrate in residing region promotes preset height (generally to pond body top), inside it through spilling again after over cleaning,
Filtrate is circulated up and down in pond body, so as to make filtrate by being repeatedly circulated, is always ensured that sewage
High-efficient purification effect, and without suspend filter tank operation carry out backwash operation.Water distributor is arranged in pond body, is mainly used for
Constantly discharge sewage.Aeration tube is also provided with multiple simultaneously, and one end of aeration tube is located at outside pond body, and pond body is extended to outside pond body
It is interior, oxygen is sprayed for each sand device region that carries into pond body, to ensure the dissolved oxygen content in water.Aeration tube
Entrance is connected with the air outlet for the frequency conversion Aeration fan being erected at outside pond body, and the speed of service of the frequency conversion Aeration fan can be with time-varying
Change, and then changes air output at any time.Each dissolved oxygen instrument be respectively attached to it is each carry on sand device, the dissolving for detecting current water
Oxygen content, meanwhile, each dissolved oxygen instrument is connect with the controller signals of frequency conversion Aeration fan, the dissolving that will can in real time detect
Oxygen content data are sent to the controller, so that controller judges the Institute of Micro-biology on filtrate according to dissolved oxygen content data
Locate the oxygen environment situation of environment, and then control the rotating speed of frequency conversion Aeration fan, adjusts the oxygen content in air output so that in pond body
Dissolved oxygen content in sewage increases or reduces rapidly, and is eventually located within the scope of the preset high activity of microorganism.In conclusion
Continuous flow biological aerated filter provided by the utility model can make biological aerated filter persistently run without interruption for a long time
On the basis of, without carrying out shutdown backwash operation, while ensure higher filtrate is active, at sewage active compared with high microorganism and higher
Manage efficiency.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of overall structure diagram of specific implementation mode provided by the utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the concrete structure schematic diagram of distributing water room shown in Fig. 1.
Wherein, in Fig. 1-Fig. 3：
Pond body -1 proposes sand device -2, water distributor -3, aeration tube -4, branch pipe -401, frequency conversion Aeration fan -5, dissolving
Water pipe -901, weir plate -10, flowing hole-cross in oxygen instrument -6, automatically controlled throttle valve -7, temperature sensor -8, distributing water room -9
101。
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It please refers to Fig.1 and Fig. 2, Fig. 1 is a kind of overall structure signal of specific implementation mode provided by the utility model
Figure, Fig. 2 are the vertical view of Fig. 1.
In a kind of specific implementation mode provided by the utility model, continuous flow biological aerated filter includes mainly pond body
1, sand device 2, water distributor 3, aeration tube 4, frequency conversion Aeration fan 5 and dissolved oxygen instrument 6 are carried.
Wherein, it can be arranged simultaneously in pond body 1 and multiple carry sand device 2, each side for carrying sand device 2 and being each responsible in pond body 1
Waters has been each filled with the filtrate of flowing in each side waters in pond body 1, and each carries sand device 2 then by the heavy of its residing region
Product filtrate promotes preset height (generally to 1 top of pond body), inside it through spilling again after over cleaning so that filtrate can
It is circulated up and down in pond body 1.In general, 4 can be arranged simultaneously in pond body 1 carries sand device 2, it is located at the four of pond body 1
A orientation.In the operational process in filter tank, each sand device 2 that carries successively promotes the filtrate of 1 bottom of pond body to preset height
It sprays again afterwards, it is cleaned in inside when the part filtrate is sprayed, by the biomembrane being attached on filtrate and is trapped
Solid impurity etc. may block the substance stripping of filtrate hole or remove so that filtrate keeps high-efficiency activated again.And pass through
Filtrate after cleaning is re-introduced into the foul water fraction at 1 middle part of pond body, and biological cleaning is carried out to it.In this way, filtrate is by anti-
It is multiple to recycle, it is always ensured that the high-efficient purification effect to sewage, and backwash operation is carried out without suspending filter tank operation.
Water distributor 3 is arranged in pond body 1, is mainly used for that sewage constantly is discharged.Aeration tube 4 is also provided with multiple, exposure simultaneously
One end of tracheae 4 is located at outside pond body 1, is extended to outside pond body 1 in pond body 1, where carrying sand device 2 for each into pond body 1
Region sprays oxygen, to ensure the dissolved oxygen content in water.The entrance of aeration tube 4 and the frequency conversion being erected at outside pond body 1 are aerated
The air outlet of wind turbine 5 is connected, and the speed of service of the frequency conversion Aeration fan 5 can change at any time, and then change air output at any time.
Each dissolved oxygen instrument 6 be respectively attached to it is each carry on sand device 2, the dissolved oxygen content for detecting current water, meanwhile,
Each dissolved oxygen instrument 6 is connect with the controller signals of frequency conversion Aeration fan 5, the dissolved oxygen content data that will can in real time detect
It is sent to the controller, so that controller judges the oxygen of the microorganism local environment on filtrate according to dissolved oxygen content data
Ambient conditions, and then the rotating speed of frequency conversion Aeration fan 5 is controlled, adjust the oxygen content in air output so that in pond body 1 in sewage
Dissolved oxygen content increases or reduces rapidly, and be eventually located at the preset high activity range of microorganism (such as complete active 80% with
It is first-class) in, therefore can ensure active compared with high microorganism and higher sewage treating efficiency in long-term continuous service.
Further, in the present embodiment, the other end of aeration tube 4 is provided with several branch pipes 401, each branch pipe 401
Quantity it is identical as the quantity for carrying sand device 2, i.e., each branch pipe 401 correspond to one of them carry sand device 2, in each branch pipe 401
The air of ejection is for providing its corresponding biosolubilization oxygen carried in range residing for sand device 2.Also, in each branch pipe 401
Exit be both provided with automatically controlled throttle valve 7, which connect with 6 signal of corresponding dissolved oxygen instrument respectively, can
According to the real-time detector data of dissolved oxygen instrument 6, the controller of collocation frequency conversion Aeration fan 5, by change valve opening control from
The gas oxygen content that the exit of branch pipe 401 sprays, to further increase in each sewage carried in range residing for sand device 2
Dissolved oxygen amount.
Moreover, the present embodiment is also additionally arranged several temperature sensors 8, the temperature on each outer wall for carrying sand device 2
Sensor 8 is spent mainly for detection of the water temperature in current pond body 1, and will detect that water temperature data is sent to frequency conversion aeration in real time
The controller of wind turbine 5, so set, due to the microbial activity in filtrate influenced by temperature factor it is also bigger, become
Frequency Aeration fan 5 can consider dissolved oxygen content and temperature data simultaneously when adjusting air output according to built-in algorithm, and to total
Air output carry out more accurate adjustment.
In a kind of preferred embodiment about water distributor 3, the quantity of the water distributor 3 can be with the quantity phase that carries sand device 2
Together, when for example carrying sand device 2 and have 4, water distributor 3 is also provided with 4, and each water distributor 3 corresponds to one of them and carries sand device respectively
2.And in order to improve from the sewage sprayed in water distributor 3 with this carry sand device 2 residing for the filtrate that flows in region fully combined, can will
Each water distributor 3 is annular in shape or net distribution, so as to put forward the circumferential direction of sand device 2 simultaneously around being discharged.
As shown in figure 3, Fig. 3 is the concrete structure schematic diagram of distributing water room shown in Fig. 1.
In addition, being flowed into pond body 1 for convenience of sewage, the present embodiment is provided with distributing water room 9 in the top of pond body 1, and
It is provided with several in distributing water room 9 and crosses water pipe 901, each is crossed water pipe 901 and be connected to respectively with a wherein water distributor 3, will be dirty
Water introduces water distributor 3.
Further, the present embodiment crosses the water inlet of water pipe 901 at each and is provided with weir plate 10, can be by distributing water room 9
Inner space separate, in general, weir plate 10 can be arranged 4 pieces simultaneously, so that correspond to respectively in pond body 1 each carries sand device 2
Residing waters.Meanwhile flowing hole 101 is offered on each weir plate 10, and the diameter of each flowing hole 101 is adjustable,
To adjust from having respectively entered each sewage quantity crossed in water pipe 901 in distributing water room 9.Specifically, the flowing hole 101 can be in spiral shell
Contraction type structure is revolved, the size of center through hole can be changed to the rotation at center or reverse rotation by each helical blade, to
Change the diameter of flowing hole 101.And the regulating mechanism of flowing hole 101, it can be connect with the controller signals of frequency conversion Aeration fan 5,
The two can be run simultaneously, and when the rotating speed of frequency conversion Aeration fan 5 increases, illustrate that microbial activity is higher, and dissolved oxygen amount needs are larger,
It is also higher to the treatment effeciency of sewage simultaneously, therefore the diameter of flowing hole 101 can be increased, the sewage quantity of introducing is improved, otherwise also
So.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality new
Type.Various modifications to these embodiments will be apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest range consistent with features of novelty.
Claims (6)
1. a kind of continuous flow biological aerated filter, which is characterized in that including pond body (1), be set to it is several in the pond body (1)
It is a for the filtrate for being deposited on the pond body (1) bottom is promoted to cleaned after preset height spilt again carry sand device
(2), the water distributor (3) for introducing sewage raw water and being vented in the pond body (1), and outside from the pond body (1)
It extends to each described sand device (2) region that carries in the pond body (1) and in the pond body (1) and sprays oxygen
The entrance of aeration tube (4), the aeration tube (4) is connected with the air outlet of frequency conversion Aeration fan (5), each described to carry sand device (2)
On be attached with several for detecting the dissolved oxygen instrument (6) of current dissolved oxygen content in the pond body (1), and each dissolving
Oxygen instrument (6) is connect with the controller signals of the frequency conversion Aeration fan (5), so that the controller controls the frequency conversion aeration
Oxygen content in the air output of wind turbine (5) is located within the scope of the microorganism high activity in filtrate.
2. continuous flow biological aerated filter according to claim 1, which is characterized in that the other end of the aeration tube (4)
It is provided with several branch pipes (401), each branch pipe (401) corresponds to carry sand device (2), and each institute described in one of them respectively
The exit for stating branch pipe (401) is both provided with automatically controlled throttle valve (7) for adjusting gas output, each automatically controlled throttle valve (7)
It is connect respectively with corresponding dissolved oxygen instrument (6) signal.
3. continuous flow biological aerated filter according to claim 2, which is characterized in that further include being attached to each described carry
Temperature sensor (8) on the outer wall of sand device (2), for detecting presently described pond body (1) interior water temperature, and each temperature sensing
Device (8) is connect with the controller signals of the frequency conversion Aeration fan (5).
4. continuous flow biological aerated filter according to claim 3, which is characterized in that the quantity of the water distributor (3) with
The quantity for carrying sand device (2) is identical, and corresponds；Each water distributor (3) is used to described carry sand around corresponding
Device (2) carries out circumferential water outlet.
5. continuous flow biological aerated filter according to claim 4, which is characterized in that be provided with above the pond body (1)
Distributing water room (9) for introducing sewage, and water pipe (901) and each water distributor (3) cross by several in the distributing water room (9)
Connection.
6. continuous flow biological aerated filter according to claim 5, which is characterized in that cross water pipe (901) described in each
Water inlet is both provided with weir plate (10), and the adjustable flowing hole of diameter (101) is offered on each weir plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721890679.1U CN207811349U (en) | 2017-12-28 | 2017-12-28 | Continuous flow biological aerated filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721890679.1U CN207811349U (en) | 2017-12-28 | 2017-12-28 | Continuous flow biological aerated filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207811349U true CN207811349U (en) | 2018-09-04 |
Family
ID=63328570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721890679.1U Expired - Fee Related CN207811349U (en) | 2017-12-28 | 2017-12-28 | Continuous flow biological aerated filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207811349U (en) |
-
2017
- 2017-12-28 CN CN201721890679.1U patent/CN207811349U/en not_active Expired - Fee Related
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Granted publication date: 20180904 |