CN110386642A - A kind of water purifier nanofiltration membrane module - Google Patents
A kind of water purifier nanofiltration membrane module Download PDFInfo
- Publication number
- CN110386642A CN110386642A CN201910735133.6A CN201910735133A CN110386642A CN 110386642 A CN110386642 A CN 110386642A CN 201910735133 A CN201910735133 A CN 201910735133A CN 110386642 A CN110386642 A CN 110386642A
- Authority
- CN
- China
- Prior art keywords
- nanofiltration membrane
- water
- membrane filter
- filter
- water outlet
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 239000012528 membrane Substances 0.000 title claims abstract description 67
- 238000001728 nano-filtration Methods 0.000 title claims abstract description 64
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 238000000746 purification Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000000108 ultra-filtration Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/027—Nanofiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of water purifier nanofiltration membrane modules, including shell, it is arranged in the intracorporal nanofiltration membrane filter of shell and upper cover, upper lid is equipped with water inlet, water outlet and concentrated water outlet, multiple filtration channels are provided in nanofiltration membrane filter, a plurality of water purification channel is equipped in nanofiltration membrane filter, water purification channel is closed plate cavity, nanofiltration membrane filter outside wall surface offers multiple effluent troughs, upper cover inner wall and nanofiltration membrane filter upper surface form intake antrum, water chamber is formed between inner walls and nanofiltration membrane filter outer wall and effluent trough, housing bottom and nanofiltration membrane filter lower end surface form concentrated water chamber.Filter core is nanofiltration membrane filter, and compared to the mode of previous coating, the service life is longer, and filter effect is more preferable；By the way that water purification channel is arranged in nanofiltration membrane filter, so that filter area is bigger, the pressure for filtering wall surface is shared uniformly, is being not easy to crack nanofiltration membrane filter when used for a long time.
Description
Technical field
The present invention relates to a kind of water purifier nanofiltration membrane modules.
Background technique
With the propulsion of process of industrialization, problem of environmental pollution is increasingly serious, and water resource pollution is particularly problematic, and from
Carry out the lag of water factory's process and equipment modifying, city water-supply pipe network corrodes, sedimentation, insecurity of secondary water-supply etc. in water
Problem pays close attention to the terminal purifying of water resource more, and drinking water safety problem increasingly obtains the attention of people.Water purification
Device is a kind of by physical filtering principle, and the substances such as suspended matter colloid, heavy metal, microorganism, virus, bacterium in raw water are cut
It stays, a kind of water treatment facilities for allowing hydrone and other ions to pass through.
Water purifier mostly uses membrane filter to be filtered at present, is divided into ultrafiltration, nanofiltration and reverse osmosis three according to the difference of filter core
Kind membrane filtration mode.Since filter sizes are larger when being filtered using ultrafiltration, ion organic matter cannot be removed effectively, it is very difficult to reach
Water quality standard for drinking water.And use osmosis filtration although water purification is with high purity, but also retains while removing harmful substance
Other all solutes, therefore the pure water prepared without minerals and is in certain faintly acid, long-term drinking is unfavorable for human body
Health.And nanofiltration be a kind of aperture between ultrafiltration and it is reverse osmosis between using pressure difference as the Aspect of some new membrane processes of driving force,
Selective filter can be realized to water, can effectively remove the harmful substances such as bacterium, virus, heavy metal ion, while retaining in water
The minerals beneficial to human body such as certain potassium, sodium, calcium and magnesium, therefore drinking water treatment now is better conformed to using nanofiltration membrane
Direction-health water.And according to the difference of membrane material, nanofiltration membrane is generally divided into organic nanofiltration membrane and nanofiltration membrane.And have
Machine nanofiltration membrane is compared, and nanofiltration membrane has high temperature resistant, corrosion-resistant, oxidative resistance, high mechanical strength, flux big and service life
The advantages such as strong.
Nanofiltration membrane is divided into tubular type and two kinds of plate.Existing tubular ceramic nanofiltration membrane only relies on pipe during the filtration process
The densely covered micropore of wall carries out filtrate, and the macromolecular substances or suspended matter in raw water are easy to be attached on tube wall, cause blockage of the micro orifice,
It is bad so as to cause filter effect.Further, it since the inside of tubular ceramic nanofiltration membrane is chronically at pressure active state, is easy to produce
Raw crackle, therefore the problem that generally existing service life is shorter.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of water purifier nanofiltration membrane modules.
Technical solution of the present invention is as follows: a kind of water purifier nanofiltration membrane module, including shell, is arranged intracorporal in shell
Nanofiltration membrane filter and the upper cover for being sealed in shell upper port, the upper lid are equipped with water inlet, water outlet and concentrated water
Outlet, the nanofiltration membrane filter inner shaft is to being provided with multiple filtration channels, the filtration channel both ends open, the filtering
The upper end in channel is water inlet and lower end is water outlet, is had centered on axle center to outer wall radiation in nanofiltration membrane filter a plurality of
Water purification channel, by the uniform equal part of multiple filtration channels, the water purification channel is closed plate cavity, described in the water purification channel
Nanofiltration membrane filter outside wall surface is uniformly provided with multiple effluent troughs, the upper cover inner wall and nanofiltration membrane filter upper end vertically
Face forms intake antrum, and water chamber, the shell are formed between the inner walls and nanofiltration membrane filter outer wall and effluent trough
Body bottom and nanofiltration membrane filter lower end surface form concentrated water chamber, and the water inlet be connected to intake antrum, the water outlet and out
Water cavity connection, the concentrated water outlet are connected to concentrated water chamber, and the concentrated water outlet is in off state in water purification.
Specifically: the diameter of the filtration channel is 1-3mm.
Specifically: the concentrated water outlet is connected to by being vertically arranged in the pipeline of water chamber with concentrated water chamber.
Specifically: the intake antrum is isolated with water chamber by sealing ring, and the water chamber and concentrated water chamber pass through sealing ring
Isolation.
The beneficial effects of the present invention are: filter core is nanofiltration membrane filter, compared to the mode of previous coating, service life
Longer, filter effect is more preferable；By the way that water purification channel is arranged in nanofiltration membrane filter, and by filtration channel equal part, so that
Filter area is bigger, and the pressure for filtering wall surface is shared uniformly, is being not easy to split the generation of nanofiltration membrane filter when used for a long time
Line；Nanofiltration membrane filter outside wall surface is uniformly provided with multiple effluent troughs vertically, increases water-outlet area, and water rate is higher.
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
Fig. 1 is cross-sectional view of the present invention.
Fig. 2 is the cross-sectional view of upper cover in the present invention.
Fig. 3 is the structural schematic diagram of nanofiltration membrane filter in the present invention.
Fig. 4 is the cross-sectional view of shell in the present invention.
Fig. 5 is structural schematic diagram of the invention.
Fig. 6 is the top view of nanofiltration membrane filter in the present invention.
Fig. 7 be in Fig. 6 A-A to cross-sectional view.
Fig. 8 is the cross-sectional view of B-B direction in Fig. 6.
Wherein: 1- upper cover；2- shell；3- nanofiltration membrane filter；4- intake antrum；5- water chamber；6- concentrated water chamber；7- pipe
Road；8- water inlet；The outlet of 9- concentrated water；10- water outlet；11- intake tunnel；.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Refering to fig. 1-5, a kind of water purifier nanofiltration membrane module, including shell 2, the ceramics being arranged in shell 2 are received
Filter membrane filter core 3 and the upper cover 1 for being sealed in 2 upper port of shell, the upper cover 1 are equipped with water inlet 8, water outlet 10 and concentrated water
Outlet 9, is axially provided with multiple filtration channels 302 in the nanofiltration membrane filter 3,302 both ends open of filtration channel,
The upper end of the filtration channel 302 is water inlet and lower end is water outlet, and nanofiltration membrane filter 3 is interior outside centered on axle center
Wall radiation has an a plurality of water purification channel 11, and the water purification channel 11 is by the uniform equal part of multiple filtration channels 302, the water purification channel 11
For closed plate cavity, 3 outside wall surface of nanofiltration membrane filter is uniformly provided with multiple effluent troughs 301 vertically, it is described on
1 inner wall of lid and 3 upper surface of nanofiltration membrane filter form intake antrum 4,2 inner wall of shell and 3 outer wall of nanofiltration membrane filter
And water chamber 5 is formed between effluent trough, 2 bottom of shell and 3 lower end surface of nanofiltration membrane filter form concentrated water chamber 6, institute
Water inlet 8 to be stated to be connected to intake antrum 4, the water outlet 10 is connected to water chamber 5, and the concentrated water outlet 9 is connected to concentrated water chamber 6,
The concentrated water outlet 9 is in off state in water purification.The diameter of heretofore described filtration channel 302 is 1-3mm.
Heretofore described concentrated water outlet 9 is connected to by being vertically arranged in the pipeline 7 of water chamber 5 with concentrated water chamber 6.The present invention
Described in intake antrum 4 be isolated with water chamber 5 by sealing ring (not shown), the water chamber 4 and concentrated water chamber 6 by sealing ring every
From.
In actual use, water to be clean enters intake antrum 4 from water inlet 8, and the water in intake antrum 4 enters filtering
Channel 302, there are two types of the approach of water outlet for the water in filtration channel 302, and one is the filtering close to 3 outer wall of nanofiltration membrane filter is logical
Water in road 302 directly goes out to complete filtering from 3 outer wall of nanofiltration membrane filter, and another kind is proximate to the filtering in water purification channel 11
Water in channel 302 enters water purification channel 11 and completes filtering, then goes out from 3 outer wall of nanofiltration membrane filter, net in water chamber 5
Change the water completed to go out from water outlet 10,3 outside wall surface of nanofiltration membrane filter is uniformly provided with multiple effluent troughs 301 vertically, increases
Water-outlet area is added, water rate is higher；When needing to clean nanofiltration membrane filter 3, it is only necessary to open concentrated water outlet 9, impurity
It can be discharged out of 3 upper and lower surface of nanofiltration membrane filter and filtration channel 302 under the action of impacting water.
Above-mentioned accompanying drawings and embodiments are merely to illustrate the present invention, and any technical field those of ordinary skill does it
Appropriate changes or modifications, all should be regarded as not departing from the invention patent scope.
Claims (4)
1. a kind of water purifier nanofiltration membrane module, including shell, setting is in the intracorporal nanofiltration membrane filter of shell and close
It is enclosed in the upper cover of shell upper port, the upper lid is equipped with water inlet, water outlet and concentrated water outlet, it is characterised in that: described
Nanofiltration membrane filter inner shaft is to being provided with multiple filtration channels, the filtration channel both ends open, the filtration channel it is upper
End is water inlet and lower end is water outlet, has a plurality of water purification logical to outer wall radiation centered on axle center in nanofiltration membrane filter
The uniform equal part of multiple filtration channels, the water purification channel are closed plate cavity by road, the water purification channel, and the ceramics are received
Filter membrane filter core outside wall surface is uniformly provided with multiple effluent troughs vertically, and the upper cover inner wall is formed with nanofiltration membrane filter upper surface
Intake antrum forms water chamber, the housing bottom between the inner walls and nanofiltration membrane filter outer wall and effluent trough
Concentrated water chamber is formed with nanofiltration membrane filter lower end surface, the water inlet is connected to intake antrum, and the water outlet and water chamber connect
Logical, the concentrated water outlet is connected to concentrated water chamber, and the concentrated water outlet is in off state in water purification.
2. a kind of water purifier nanofiltration membrane module according to claim 1, it is characterised in that: the filtration channel it is straight
Diameter is 1-3mm.
3. a kind of water purifier nanofiltration membrane module according to claim 1, it is characterised in that: the concentrated water outlet passes through
The pipeline for being vertically arranged in water chamber is connected to concentrated water chamber.
4. a kind of water purifier nanofiltration membrane module according to claim 1, it is characterised in that: the intake antrum and water outlet
Chamber is isolated by sealing ring, and the water chamber is isolated with concentrated water chamber by sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735133.6A CN110386642A (en) | 2019-08-09 | 2019-08-09 | A kind of water purifier nanofiltration membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735133.6A CN110386642A (en) | 2019-08-09 | 2019-08-09 | A kind of water purifier nanofiltration membrane module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110386642A true CN110386642A (en) | 2019-10-29 |
Family
ID=68288707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735133.6A Pending CN110386642A (en) | 2019-08-09 | 2019-08-09 | A kind of water purifier nanofiltration membrane module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110386642A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201519554U (en) * | 2009-11-11 | 2010-07-07 | 景德镇陶瓷学院 | Honeycomb hydrophilic ceramic filter membrane |
| CN102671550A (en) * | 2012-06-01 | 2012-09-19 | 清华大学 | Ceramic membrane tube support and preparation method thereof |
| CN104220151A (en) * | 2012-03-30 | 2014-12-17 | 日本碍子株式会社 | Honeycomb shaped porous ceramic body, manufacturing method for same, and honeycomb shaped ceramic separation membrane structure |
| CN205346908U (en) * | 2016-01-27 | 2016-06-29 | 江阴天淼膜科技有限公司 | Water treatment membrane module |
| CN206255899U (en) * | 2016-08-04 | 2017-06-16 | 上海键水科技发展有限公司 | A kind of high-performance NF membrane water system |
| CN108722204A (en) * | 2018-06-12 | 2018-11-02 | 山东华恩新材料科技有限公司 | A kind of tubular type silicon carbide nano ceramics filter core and preparation method thereof |
| CN210656278U (en) * | 2019-08-09 | 2020-06-02 | 清华苏州环境创新研究院 | Ceramic nanofiltration membrane component for water purifier |
-
2019
- 2019-08-09 CN CN201910735133.6A patent/CN110386642A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201519554U (en) * | 2009-11-11 | 2010-07-07 | 景德镇陶瓷学院 | Honeycomb hydrophilic ceramic filter membrane |
| CN104220151A (en) * | 2012-03-30 | 2014-12-17 | 日本碍子株式会社 | Honeycomb shaped porous ceramic body, manufacturing method for same, and honeycomb shaped ceramic separation membrane structure |
| CN102671550A (en) * | 2012-06-01 | 2012-09-19 | 清华大学 | Ceramic membrane tube support and preparation method thereof |
| CN205346908U (en) * | 2016-01-27 | 2016-06-29 | 江阴天淼膜科技有限公司 | Water treatment membrane module |
| CN206255899U (en) * | 2016-08-04 | 2017-06-16 | 上海键水科技发展有限公司 | A kind of high-performance NF membrane water system |
| CN108722204A (en) * | 2018-06-12 | 2018-11-02 | 山东华恩新材料科技有限公司 | A kind of tubular type silicon carbide nano ceramics filter core and preparation method thereof |
| CN210656278U (en) * | 2019-08-09 | 2020-06-02 | 清华苏州环境创新研究院 | Ceramic nanofiltration membrane component for water purifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205501006U (en) | Filter core and have water purification unit of its filter core | |
| CN111252924A (en) | Compound filter element group spare and water purification system | |
| CN105601034B (en) | A kind of integrated equipment for sewage treatment and its technique | |
| CN210656278U (en) | Ceramic nanofiltration membrane component for water purifier | |
| CN110386642A (en) | A kind of water purifier nanofiltration membrane module | |
| CN203525403U (en) | Silicon carbide film filter | |
| CN110228834B (en) | Self-flowing water treatment system capable of backwashing | |
| CN213286372U (en) | Central tube of reverse osmosis membrane element | |
| CN211688680U (en) | Water filter for purifying impure water by magnetic field | |
| CN211141688U (en) | Convenient five-stage water purification system for grading water intake | |
| CN211612279U (en) | Membrane separation device with cleaning function | |
| CN2659871Y (en) | Household water purifier using multi-stage filter element | |
| CN210457726U (en) | Water purifying device | |
| CN208234644U (en) | A kind of self-cleaning direct drinking fountain | |
| CN208166657U (en) | A kind of turntable filter chamber | |
| CN210193535U (en) | Water treatment filtering membrane component | |
| CN214571310U (en) | Industrial wastewater treatment's multilayer milipore filter filtering component | |
| CN2362848Y (en) | Water purifier without substituting core | |
| CN214360550U (en) | Novel ultrafiltration reverse osmosis membrane treatment facility | |
| CN219885710U (en) | Filter element for water purification | |
| CN210356713U (en) | Ultrasonic wave antipollution detachable ultrafiltration membrane system | |
| CN108339404A (en) | A kind of new and effective ceramic membrane | |
| CN214115222U (en) | Drinking water purification equipment with nanofiltration and reverse osmosis simultaneously | |
| CN112870852B (en) | Ternary purifies pore ceramic filter core | |
| CN217868300U (en) | Dynamic membrane bioreactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |