CN209210442U - A kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device - Google Patents
A kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device Download PDFInfo
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- CN209210442U CN209210442U CN201821742214.6U CN201821742214U CN209210442U CN 209210442 U CN209210442 U CN 209210442U CN 201821742214 U CN201821742214 U CN 201821742214U CN 209210442 U CN209210442 U CN 209210442U
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Abstract
The utility model relates to a kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal devices.The utility model can overcome following disadvantage, and no setting is required produces water pump, and the attenuation according to membrane flux carries out backwash, in the case where sludge quality exists and fluctuates, can also be greatly improved with long-play and be produced water efficiency.And the utility model is also provided with chemistry and reinforces backwash, timely algae removal sterilization.Compared with prior art, the utility model uses ceramic membrane, and flux is big, it is dirty stifled to be not easy, and equipment energy consumption is low, it is high-efficient to produce water, can run steadily in the long term, economic value with higher.
Description
Technical field
The utility model belongs to field of waste water treatment, and it is dirty to be related to a kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system
Water treatment facilities.
Background technique
Inorganic separating film enters industrial circle in late 1970s, in the eighties, industrial inorganic micro filtering membrane and nothing
Machine ultrafiltration membrane is developed.Inorganic separating film has the advantages that incomparable some of polymer separation film: chemical stability is good, machine
Tool intensity is big, antimicrobial corrosive power is strong, pore-size distribution is narrow, separative efficiency is high.
Since ceramic membrane is divided into tubular membrane and plate membrane, tubular membrane have compared with plate membrane channel is narrow, filter area not
The drawbacks such as big, and plate membrane has filter area big, easy air purge washes away, and is not easy the features such as dirty stifled, to have extensively in many fields
Ground application.
Greatest problem in ceramic membrane use is fouling membrane, and fouling membrane not only includes since Irreversible Adsorption, blocking cause
Pollution (irreversible membrane fouling), and the formation (reversible membrane fouling) including leading to gel layer due to reversible concentration polarization, the two
The decaying of membrane flux in operational process is caused jointly.
It selects different chemical reagent to be cleaned according to pollutant difference when chemical cleaning, is such as gone with the dissolution of acids cleaning agent
Except minerals and DNA, the effective deproteination matter pollution of NaOH aqueous solution, citric acid ammoniate aqueous cleaning can remove carbonate scale and
Metallic colloid, EDTA add NaOH cleaning solution removal silica, organic matter and microbial contamination.
Application No. is 201310308818.5 Chinese invention patents to disclose a kind of expanded granular sludge bed reactor-gravity
The sewage and wastewater treatment system of streaming film filtering and method using system processing sewage, combine anaerobism and organic membrane filter
Technique solves the problems, such as that energy consumption is high in aerobic process, it is poor with energy recovery to take up a large area.Membrane flux is 5~30L/m2h.But
For the invention using organic film, flux is lower, and required membrane area is larger.Do not have backwash function simultaneously, can not carry out anti-
It washes.
Disclosing a kind of submerged ultrafiltration application No. is 201610837585.1 Chinese invention patent, to carry out water body net
The device and method of change, the invention separate the mobile water body purification of combination using powder electroless plating with submerged membrane, but
The invention carries out production water using water outlet pump, and required energy consumption is higher.
Application No. is 200610124989.25 Chinese invention patents to disclose a kind of separated gravity stream membrane biological reaction
Device sewage water treatment method and its equipment separate film biologic integration equipment membrane module and sbr reactor device, and sbr reactor device is higher than
At least 1 meter of film biologic integration equipment membrane module.Sbr reactor device by anaerobism, Aerobic Process for Treatment, staticly settle after be discharged, utilize
High position water outlet realizes that sludge is separated with sewage through gravity pressure difference.But separation of removing contamination, therefore the method can be realized in sbr reactor device
Period operating time is long, low separation efficiency, while the invention does not consider the chemical cleaning of film when longtime running, the equipment of external
And height is difficult to realize in engineering.
At present in actual engineer application, ceramic membrane is for film biologic integration equipment since its higher cost does not take temporarily
It obtains and widely applies.The film biologic integration equipment film of existing mainstream is mainly based on organic film Kynoar (PVDF), nothing
Machine pottery membrane flux is far longer than organic film, can realize simultaneous oxygen, aerobic work according to technique and aeration quantity in membrane module bottom aeration
Skill.The utility model can realize that gravity stream microkinetic produces water, the self-priming in conventional film biologic integration equipment that no setting is required simultaneously
Pump.Furthermore conventional film biologic integration equipment film device backwash basic operational ways are all timing backwash, such as operation 20 minutes
Backwash 1 minute, but the water consumption backwashed is larger, and excessively frequent backwash can expend a large amount of production water, reduce whole system
Producing water ratio, and backwash and be spaced that the excessive membrane flux that will cause is too low, and producing water ratio also results in membrane lifetime drop while decline
It is low.In addition, may be subjected to microorganism dirt in equipment and in water production pipeline in existing film ultrafiltration system During Process of Long-term Operation
Dye, conventional backwash can not solve the problems, such as this, equipment caused not run steadily in the long term.
Summary of the invention
The purpose of this utility model is to overcome the flux of traditional organic film is small, the high problem of energy consumption proposes one
Kind utilizes the ceramic membrane ultrafitration system sewage water treatment method and its equipment of gravity stream, only with blower and chemical metering pump, backwashing pump
As power-equipment, it can effectively solve the problems, such as that the production pump energy consumption in conventional film biologic integration device systems is high.This is practical
It is novel to be suitable for processing sanitary sewage and industrial wastewater.
Technical solution used by the equipment of the utility model is as follows:
A kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device, the equipment include conditioning tank, into
Water pump, integration apparatus, liquidometer, microporous aeration device, ceramic film component, temperature sensor, blower, fan delivery are adjusted
Valve, blast gauge, aerating pipelines, production water/backwash pipeline, production water valve, production water pressure table, electromagnetic flowmeter, backwash valve, pipeline are mixed
Clutch, backwash pressure table, backwashing pump, backwashing pump inlet valve, produces pond, chemical backwash medicine-chest, metering pump and anti-at backwash flowmeter
Wash agent valve；
The intake pump is set in conditioning tank, and intake pump passes through the water inlet of pipeline connecting integration equipment, one
Change the temperature sensor of the liquidometer that measurement sewage level height is equipped in equipment and measurement sewage temperature；The ceramic film component
Immersion is set in integration apparatus, and microporous aeration device is set to the underface of ceramic film component, and microporous aeration device
Blast gauge, fan delivery regulating valve and blower are sequentially connected with by aerating pipelines；The water outlet connection production water of ceramic film component/anti-
It washes one end of pipeline, produces water/backwash pipeline other end and connect water producing pipe road and backwash pipeline simultaneously, wherein water producing pipe road is sequentially
Access produces pond after connection produces water valve, produces water pressure table, electromagnetic flowmeter, and backwash pipeline is sequentially connected with backwash valve and pipeline is mixed
One end of clutch, the other end of pipe-line mixer connect two branches simultaneously, and first branch is sequentially connected with backwash medicament valve, meter
Amount pump and chemical backwash medicine-chest, Article 2 branch are sequentially connected with backwash flowmeter, backwash pressure table, backwashing pump, backwash pump water inlet
Access produces pond after valve.
Preferably, it produces water/backwash tube road and is also connected with a sampling line, sampling line is equipped with sampling valve.
Preferably, the ceramic film component is ceramic membrane, and membrane material includes aluminium oxide, silicon carbide, titanium oxide, oxygen
Change zirconium.
Preferably, ceramic film component is removably set in integration apparatus, can be from integration apparatus
It takes out.
Preferably, microporous aeration device is located at 20~50cm immediately below ceramic film component.
The utility model compared with the existing technology has the following advantages that and effect: in traditional membrane biological reaction integration apparatus
Film uses organic film, and membrane flux is low；It produces water side and needs to be arranged production water pump, energy consumption is high；Specific time backwash is pressed in backwash, produces water efficiency
It is low；System is not provided with chemical backwash, will appear unstable situation for a long time.And the utility model can overcome disadvantage mentioned above, be not necessarily to
Setting produces water pump, and the attenuation according to membrane flux carries out backwash, in due course chemistry reinforce backwash can insurance system transport steadily in the long term
Row, economic value with higher.
Detailed description of the invention
Fig. 1 is the utility model gravity stream ceramic membrane microkinetic ultrafiltration system schematic diagram.
Fig. 2 is ceramic membrane schematic diagram (unit mm).
As icon note is as follows shown in Fig. 1:
Conditioning tank 1, intake pump 2, integration apparatus 3, liquidometer 4, microporous aeration device 5, ceramic film component 6, temperature pass
Sensor 7, fan delivery regulating valve 9, blast gauge 10, aerating pipelines 11, produces water/backwash pipeline 12, produces water valve 13, produces water blower 8
Pressure gauge 14, electromagnetic flowmeter 15, sampling valve 16, backwash valve 17, pipe-line mixer 18, backwash flowmeter 19, backwash pressure
Table 20, backwashing pump inlet valve 22, produces pond 23, chemical backwash medicine-chest 24, metering pump 25 and backwash medicament valve 26 at backwashing pump 21.
Specific embodiment
The utility model is described in further detail combined with specific embodiments below, following embodiment is practical to this
Novel explanation but it is not limited to following embodiment.
As shown in Figure 1, be a kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device, the equipment
Main component includes conditioning tank 1, intake pump 2, integration apparatus 3, liquidometer 4, microporous aeration device 5, ceramic film component 6, temperature
Spend sensor 7, blower 8, fan delivery regulating valve 9, blast gauge 10, aerating pipelines 11, produce water/backwash pipeline 12, produce water valve 13,
Produce water pressure table 14, electromagnetic flowmeter 15, sampling valve 16, backwash valve 17, pipe-line mixer 18, backwash flowmeter 19, backwash
Pressure gauge 20, backwashing pump inlet valve 22, produces pond 23, chemical backwash medicine-chest 24, metering pump 25 and backwash medicament valve at backwashing pump 21
26。
Pending sewage is stored in conditioning tank 1, intake pump 2 is set in conditioning tank 1 and is immersed in liquid level or less.One
Body equipment 3 is integrated equipment for sewage treatment, and inside can integrate different sewage treatment pond bodies, and specific configuration does not limit
It is fixed, any product in the prior art can be used according to water quality situation.Intake pump 2 by pipeline connecting integration equipment 3 into
The mouth of a river is equipped with the liquidometer 4 of measurement sewage level height and the temperature sensor 7 of measurement sewage temperature in integration apparatus 3.Pottery
Porcelain membrane module 6 is set in integration apparatus 3, and ceramic film component 6 is below, the benefit that is arranged in the water surface in a manner of immersion
The gravity pressure difference generated with liquid level, so that the ceramic membrane in the continuous permeation ceramic membrane component 6 of water.Ceramic membrane element is Fig. 2
Shown in 1000mm × 260mm ceramic membrane, membrane material is inorganic material, including aluminium oxide, silicon carbide, titanium oxide, oxygen
Change zirconium etc..The utility model uses ceramic membrane, and flux is big, it is dirty stifled to be not easy.Microporous aeration device 5 is set to ceramic film component
6 20~50cm of underface, and microporous aeration device 5 is sequentially connected with blast gauge 10, fan delivery adjusting by aerating pipelines 11
Valve 9 and blower 8.Blower 8 can be constantly aerated by microporous aeration device 5, be produced to 6 surrounding of ceramic film component of top
Unboiled water flow disturbance reduces the attachment of mud, microorganism, maintains membrane flux.Production water/backwash pipeline 12, which is one, to be produced
Water can be used in the pipeline of backwash again, and the water outlet connection of ceramic film component 6 produces water/backwash pipeline 12 one end, produces water/backwash
The other end of pipeline 12 connects water producing pipe road and backwash pipeline simultaneously, and wherein water producing pipe road, which is sequentially connected with, produces water valve 13, produces hydraulic pressure
Access produces pond 23 after power table 14, electromagnetic flowmeter 15, and backwash pipeline is sequentially connected with backwash valve 17 and pipe-line mixer 18
One end, the other end of pipe-line mixer 18 connect two branches simultaneously, and first branch is sequentially connected with backwash medicament valve 26, metering
Pump 25 and chemical backwash medicine-chest 24, Article 2 branch are sequentially connected with backwash flowmeter 19, backwash pressure table 20, backwashing pump 21, anti-
Access produces pond 23 after washing pump water inlet valve 22.The switching for producing water and backwash function can be by producing opening for water valve 13 and backwash valve 17
It closes to be controlled.In order to realize automation control, be additionally provided in whole equipment realize the indispensable electrical equipment PLC of automation,
Touch screen, electric elements etc., various electrical equipments and sensor are carried out automatically controlling by PLC.
A sampling line is also connected on water/backwash pipeline 12 in addition, producing, sampling line is equipped with sampling valve 16, can
Real time sample detection is carried out to effluent quality by the pipeline.In addition, ceramic film component 6 is removably set to one
Change in equipment 3, such as fixed in a manner of openable and closable bracket etc., enables it when needing to be serviced, replacing from one
It is taken out in body equipment 3.
Immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage water treatment method based on above equipment, step is such as
Under:
Step 1: ceramic film component 6 is placed in integration apparatus 3, and aerating pipelines 11 are connected in the way of in Fig. 1
With production water/backwash pipeline 12.
Step 2: sewage and sludge are squeezed into simultaneously in integration apparatus 3 with intake pump 2, sewage can be sanitary sewage
Or industrial wastewater, sludge concentration are 3~12g/L.After liquid level there was not microporous aeration device 5, blower 8 is opened, and pass through blower
Volume damper 9 is by aeration control in certain value.In general, aeration intensity is 20~60m3/h·m2, m herein2For ceramics
The projected area of membrane module 6.
Step 3: when highest liquid level of the liquid level close to integration apparatus 3, open production water valve 13 makes by gravity pressure difference
The ceramic membrane in the continuous permeation ceramic membrane component 6 of water is obtained, then enters production pond 23 by producing water/backwash pipeline 12；Work as liquid level
When reaching the highest liquid level of integration apparatus 3, then the intake pump 2 of integration apparatus 3 is closed, stops water inlet.In the utility model,
The integration apparatus depth of water is at least 1.8m, and in order to guarantee being normally carried out for filtering, highest liquid level is higher than 6 top 30 of ceramic film component
~50cm, minimum liquid level are higher than 6 10~20cm of top of ceramic film component.
Step 4: ceramic film component 6 is constantly filtered under gravity pressure difference and produces water, 15 real-time monitoring of electromagnetic flowmeter
Current production water flow, and the sewage water temperature according to detected by temperature sensor 7 are converted as fixed temperature (generally 25 DEG C)
Under membrane flux, flexibly carry out backwash further according to the attenuation of membrane flux, can be in the preferable situation of sludge quality situation
Long-play, membrane flux can be kept by backwash in time in the case where sludge quality is poor by greatly improving production water efficiency
And the service life.It whenever flux depression to preset value, closes and produces water valve 13, while starting backwash operation, open backwash valve 17
With backwashing pump inlet valve 22, backwashing pump 21 is opened, backwash is carried out to ceramic film component 6；After the completion of backwash, 21 He of backwashing pump is closed
Backwash valve 17 reopens and produces water valve 13, continues to produce water.In this step, in " flux depression to preset value ", preset value
It can be an absolute value, be also possible to a ratio, but be proposed with ratio.Preferable way is the decline of membrane flux to initial
Flux 1/10~1/3 when start backwash operation, each backwash time is 10~30s, and backwash flow is 200~600L/h
m2, m herein2For membrane area used in ceramic film component 6.
Step 5: when the liquid level in conditioning tank 1 reaches the minimum liquid level of integration apparatus 3, the intake pump 2 of system is opened
Start to intake, until liquid level reaches the highest liquid level of integration apparatus 3 again, constantly progress sewage treatment；
Step 6: it when ceramic film component 6 needs to carry out chemistry to reinforce backwash in equipment running process, closes and produces water valve
13, ceramic film component 6 is taken out from integration apparatus 3, opens backwash medicament valve 26 and backwash valve 17, then open backwashing pump
21 with metering pump 25, backwash medicament mix at pipe-line mixer 18 with water, be then pumped into ceramic film component 6 carry out instead
It washes；Ceramic film component 6 is fitted into integration apparatus 3 again after the completion of backwash and continues sewage treatment.In general, chemistry adds
Strong backwash cycle is 15~30 days primary, 0.5~4h of each backwash time, and chemical backwash medicament is hydrochloric acid, sulfuric acid, hypochlorous acid
One of sodium, sodium hydroxide or a variety of combinations, chemical backwash drug concentration are 100~2000ppm, specifically can be according to water quality
It is determined with operating condition.
Above equipment is applied in a specific embodiment below, to show the specific effect of the utility model.
In the present embodiment, by silicon carbide flat ceramic membrane module (film effective area 80m2, membrane module projected area
1.2m2) be placed in integration apparatus 3, connection produces water/backwash pipeline 12, while connecting aerating pipelines 11；Aerating pipelines 11 away from
From 6 lower section 30cm of ceramic film component, 3 liquid level of integration apparatus and production mouth of a river difference in height are 2.0m.With intake pump 2 by sewage and dirty
Mud is squeezed into integration apparatus 3 simultaneously, after liquid level there was not microporous aeration device 5, opens blower 8, and control aeration quantity and be
60m3/h.After liquid level there was not 6 top 20cm of ceramic film component when i.e. minimum liquid level, gravity miscarriage water valve 13 is opened, water flow is made
Enter to produce pond 23.In the device, sludge concentration 4.2g/L, membrane flux is 40L/m after 5min is run at 23.7 DEG C2h.Such as liquid
Position reaches the highest liquid level (6 top 50cm of ceramic film component) of integration apparatus 3, and highest liquid level 2m then stops integration apparatus 3
Intake pump 2.When system production water running 180min flux depression is about the 1/3 of initial flux, closes and produce water valve 13.It opens simultaneously
Dynamic backwash operation, opens backwash valve 17, opens backwashing pump 21, carries out backwash.Backwash flow 44m3/ h, backwash time are 10s.
After backwash, backwash water pump 21 is closed, closes backwash valve 17.Gravity miscarriage water valve 13 is opened, next period production water is continued.To liquid
Position down to integration apparatus 3 minimum liquid level when, open system intake pump 2 intake.It repeats the above steps and carries out sewage treatment.
After equipment is run 15 days, ceramic film component 6 is taken out and is put into an external rinse bath, carries out sodium hypochlorite
Reinforce backwash.Pump discharge is measured according to adjusting, by the control of sodium hypochlorite concentration by ceramic membrane group after 1000ppm, backwash 5min
Part 6, which is placed in rinse bath, impregnates 4h, and then membrane module is reentered into integration apparatus 3, continues sewage treatment.
In the present embodiment, sewage treatment is carried out according to above-mentioned way, since backwash procedure can be according to the change of membrane flux
Change is adjusted automatically, and production water efficiency can be made to remain at higher level.Since water quality is preferable in the utility model, because
The interval time of backwash after this adjust automatically is 180min, if 15-30min is arranged according to conventional way, be will cause
The a large amount of water that produces is backwashed program consumption.If but likewise, longer interval time is directly arranged, since water quality exists obviously
Fluctuation, will lead to membrane flux when water degradation and substantially reduces, can equally drop low-yield water efficiency.
It can be seen that the method for flexibly carrying out backwash in the utility model according to the attenuation of membrane flux, in sludge
In the case that matter has fluctuation, it can also greatly improve with long-play and produce water efficiency.Finally in view of system is long-term, stablizes
Operation, may be subjected to microbial contamination in film and in water production pipeline, the utility model is also provided with chemistry and reinforces backwash, and
When algae removal sterilize, ensure that this ultrafiltration system equipment is run steadily in the long term.
Embodiment described above is a kind of preferable scheme of the utility model, and so it is not practical to limit
It is novel.Those of ordinary skill in related technical field can be in the case where not departing from the spirit and scope of the utility model
It makes a variety of changes and modification.Therefore all mode technical solutions obtained for taking equivalent substitution or equivalent transformation, all fall within
In the protection scope of the utility model.
Claims (5)
1. a kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device, which is characterized in that including conditioning tank
(1), intake pump (2), integration apparatus (3), liquidometer (4), microporous aeration device (5), ceramic film component (6), temperature sensing
Device (7), fan delivery regulating valve (9), blast gauge (10), aerating pipelines (11), produces water/backwash pipeline (12), produces blower (8)
Water valve (13) produces water pressure table (14), electromagnetic flowmeter (15), backwash valve (17), pipe-line mixer (18), backwash flowmeter
(19), backwash pressure table (20), backwashing pump (21), backwashing pump inlet valve (22), produce pond (23), chemical backwash medicine-chest (24),
Metering pump (25) and backwash medicament valve (26)；
The intake pump (2) is set in conditioning tank (1), and intake pump (2) passes through the water inlet of pipeline connecting integration equipment (3)
Mouthful, it is equipped with the liquidometer (4) of measurement sewage level height in integration apparatus (3) and measures the temperature sensor of sewage temperature
(7)；Ceramic film component (6) immersion is set in integration apparatus (3), and microporous aeration device (5) is set to ceramic membrane
The underface of component (6), and microporous aeration device (5) is sequentially connected with blast gauge (10), fan delivery by aerating pipelines (11)
Regulating valve (9) and blower (8)；The water outlet connection of ceramic film component (6) produces water/backwash pipeline (12) one end, produces water/backwash
The other end of pipeline (12) connects water producing pipe road and backwash pipeline simultaneously, and wherein water producing pipe road, which is sequentially connected with, produces water valve (13), produces
Water pressure table (14), electromagnetic flowmeter (15) access afterwards produces pond (23), and backwash pipeline is sequentially connected with backwash valve (17) and pipe
The other end of one end of road mixer (18), pipe-line mixer (18) connects two branches simultaneously, and first branch is sequentially connected with
Backwash medicament valve (26), metering pump (25) and chemical backwash medicine-chest (24), Article 2 branch be sequentially connected with backwash flowmeter (19),
Backwash pressure table (20), backwashing pump (21), backwashing pump inlet valve (22) access afterwards produces pond (23).
2. immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device according to claim 1, feature
It is, producing and being also connected with a sampling line on water/backwash pipeline (12), sampling line is equipped with sampling valve (16).
3. immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device according to claim 1, feature
It is, the ceramic film component is ceramic membrane, and membrane material includes aluminium oxide, silicon carbide, titanium oxide, zirconium oxide.
4. immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device according to claim 1, feature
It is, ceramic film component (6) is removably set in integration apparatus (3), can be taken from integration apparatus (3)
Out.
5. immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device according to claim 1, feature
It is, microporous aeration device (5) is located at 20~50cm immediately below ceramic film component (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821742214.6U CN209210442U (en) | 2018-10-25 | 2018-10-25 | A kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device |
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|---|---|---|---|
| CN201821742214.6U CN209210442U (en) | 2018-10-25 | 2018-10-25 | A kind of immersion gravity stream ceramic membrane microkinetic ultrafiltration system sewage disposal device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233581A (en) * | 2021-06-09 | 2021-08-10 | 福建技术师范学院 | Immersed MBR (membrane bioreactor) membrane tank device and method for sewage treatment by using same |
-
2018
- 2018-10-25 CN CN201821742214.6U patent/CN209210442U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233581A (en) * | 2021-06-09 | 2021-08-10 | 福建技术师范学院 | Immersed MBR (membrane bioreactor) membrane tank device and method for sewage treatment by using same |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210727 Address after: 317500 No.2, 4th Street, East New District, Wenling City, Taizhou City, Zhejiang Province Patentee after: TAIZHOU LIOU ENVIRONMENTAL PROTECTION NEW MATERIAL Co.,Ltd. Address before: 317500 No.2, 4th Street, East New District, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG LEO ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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