CN207998490U - For the module of wastewater treatment, carrier element and waste water treatment system - Google Patents
For the module of wastewater treatment, carrier element and waste water treatment system Download PDFInfo
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- CN207998490U CN207998490U CN201721191566.2U CN201721191566U CN207998490U CN 207998490 U CN207998490 U CN 207998490U CN 201721191566 U CN201721191566 U CN 201721191566U CN 207998490 U CN207998490 U CN 207998490U
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- China
- Prior art keywords
- module
- wastewater treatment
- carrier element
- waste water
- separator
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- 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
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 30
- 239000002351 wastewater Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 244000005700 microbiome Species 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000010802 sludge Substances 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 22
- 239000004746 geotextile Substances 0.000 description 19
- 239000010410 layer Substances 0.000 description 16
- 238000000746 purification Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 230000017074 necrotic cell death Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The utility model provide and for the module of wastewater treatment, including the carrier element and waste water treatment system in wastewater treatment module.Module for wastewater treatment includes the multiple carrier elements (7) for being arranged and configured to be perfused by waste water stream with sandwich.Module (5), which also has, is arranged between carrier element (7) and is configured to guiding multiple separators (8) of the waste water stream by module (5).
Description
Technical field
The utility model is related to a kind of modules for wastewater treatment, and the carrier element for growing bacterium and one kind
Waste water treatment system.
Background technology
It is very important from hazardous compound such as organic nutrient substance to purify sewage, in order to avoid pollution environment.Without
The sewage or waste water of purification can also cause human and animal prodigious risk of infection.
A kind of method that sewage is purified with biological mode is to use so-called biology modules, the biology modules that can for example use
In the processing waste water before infiltration or can be integrated into biological bed.Biology modules are the life for being suitable for pollution degradation particle
The growth of object film host bacteria provides surface region.Water flows through the bacterium in biology modules and biomembrane with the process pair of biology
Water is purified.Therefore, a large amount of biomembrane provides effective Water warfare.In order to ensure important biomembrane, it is advantageous that
Biomembrane provides a certain amount of oxygen.Anoxic can lead to not correctly purified water " downright bad " biomembrane.The biology of necrosis
Material also results in biology modules blocking, and biology modules blocking can make biology modules entirely ineffective.In addition, many biology modules
Require huge size.For biomembrane, to also remain good enough while obtaining huge surface region
Oxygen flowing, this is a difficult task for the industry in the field.
It can get several biology modules in the market.Swedish company Wostman Ecology AB sale is a kind of entitled
The biological bed of " WmFilter ", this biological bed from 2016 with title " BDT-avlopp"
It is presented in the Swedish pamphlet of the said firm.The biological bed includes hollow cylindrical biodegradable block, between the biodegradable block
Texture fabric with fold, to realize the above-mentioned surface for biofilm development.
Swedish company FANN VA-teknik AB sell another type of product, i.e., a kind of entitled
Module, the module is from 2016 with title " Ekologisk avloppsrensning med
Teknologi " is presented in Swedish pamphlet.The module uses thermoplastic material as between the textile material of fold
Spacer.Textile fabric provides growing surface for biomembrane, and is filled with water every a fold, remaining fold keeps oxygen
Gas.
Above-mentioned known biology modules and many other biology modules still have the shortcomings that certain.These structures all do not have
Try to evade the blockage problem caused by anoxic.
Sweden applicant BAGA Water Technology AB companies, which are just selling, a kind of solving many existing issues
Biology modules.These some biology modules being referred to as in the biology modules of " BAGA Easy " " are directed to from 2014 with title
Up to 1000 people (or more) single household family sewage treatment plant " be presented in the English pamphlet of BAGA companies.Due to
The technology of biology modules behind depends on the balance between huge surface region and oxygen supply, so there is still a need for into one in the field
Step development.
One example of the waste water treatment system of the prior art is shown in utility model public publication CN200984481U.
Reflect other background technologies in US2007/0181474A1 and US4708792A.
It can be seen that there is also leave some room for improvement from the above content.
Utility model content
The purpose of this utility model is to provide such a theory, the theory compared with prior art have improve and
Solve or at least mitigate the above problem.The purpose is realized by the technology illustrated in accompanying independent claim, relevant
Preferred embodiment is limited in dependent claims.
On the one hand, a kind of module for wastewater treatment is provided.The module includes multiple come what is arranged with sandwich
Carrier element.Carrier element is configured to be perfused by waste water stream.The module further includes being arranged between carrier element and constructing
At guiding multiple separators of the waste water stream by module.This is a kind of advantageous wastewater treatment module, because with other kinds of
Water treatment facilities is compared, and makes water longer distance of advancing pass through module by the sandwich that separator separates.Since waste water exists
It advances in module a period of time, promotes purification process in this way, so clean-up effect enhances.In addition, the module with the prior art
It compares, the module of the utility model shows structure closely with the floor space reduced.Compactedness makes the production of module
Cost is cheaper, and due to must move to bury module needed for soil mass it is less, so also making module less expensive
And it is easier to install.
In one embodiment, carrier element and separator are configured to be covered by microorganism growth-gen.Microorganism grows
Object includes microorganism and forms so-called biological skin on carrier element and separator.Microorganism is provided to passing through water process mould
Effective purification of the waste water of block.
In one embodiment, separator is arranged to guide flow to pass through module in a manner of tortuous.This makes water row
Pass through module into long distance, it means that water is more efficiently purified.
Preferably, each carrier element includes the plate being made of the filament irregularly distorted.This is microorganism growth-gen
Attachment huge surface region is provided, lead to have a large amount of biological skin in each carrier element in this way.
Separator may include geotextile sheet material.The material is advantageous because it be easy to cheaply manufacturing and
Convenient for processing.It can be for example including polyethylene.Separator can include alternatively open cell foamed plastic or other are suitable
Permeable material.Further, since separator is not preferably made of organic material, so they are not decomposed in water purifying module.
In one embodiment, separator can be half permeable.Therefore, it can pass through and separate into a part of water of module
Part.Due to microorganism growth-gen need moisten could survive, use can half permeable separator be advantageous because passing through
The water of separator causes the bottom surface of separator to get wet so that biological skin can also be grown in the bottom surface of separator.
In one embodiment, module further includes the distribution pipe for waste water to be transported to module.This be by water effectively
Introduce the preferred embodiment of module.
Module preferably further includes the air inlet passage and air discharging channel for supplying oxygen to microorganism.With not
Module with this channel is compared, and is advantageous with air duct so that the air circulation in module is improved.Due to
Microorganism needs oxygen to grow, so this is favourable scheme.
On the other hand, a kind of carrier element including in wastewater treatment module is provided.The carrier element includes not
The filament of rule distortion.The carrier element is advantageous because it provide be suitable for it is huge accompanying by microorganism growth-gen
Surface region.
In further aspect, a kind of waste water treatment system, including sludge extractor and at least one water purifying module are provided.
Description of the drawings
The embodiments of the present invention can hereinafter be illustrated with reference to attached drawing, wherein attached drawing shows the utility model
Theory is the non-limiting example how being put in practice.
Fig. 1 is the stereogram of waste water purification system;
Fig. 2 is the stereogram according to the module of one embodiment;
Fig. 3 shows cross-sectional view of the module in Fig. 2 in biological bed component;
Fig. 4 is the stereogram of a part for carrier element;
Fig. 5 is the partial perspective view according to the carrier element with geotextile and net of one embodiment;
Fig. 6 is the sectional view of module shown in Fig. 2;With
Fig. 7 is the sectional view similar to Fig. 6 for showing module according to another embodiment.
Specific implementation mode
Referring to Fig.1, a kind of wastewater treatment or purification system 1 are shown.System 1 includes having the change of entrance 3 and outlet 4
Manure pit or sludge extractor 2, the entrance 3 are used for untreated waste water, the outlet 4 be used for by sludge extractor 2 it is processed (
Grain sedimentation) and need the water being further processed.The purpose of sludge extractor 2 is to detach granule foreign with sludge is flowed through
The water of device 2 detaches, this is because being undesirable to have granule foreign in the subsequent step of system 1.In addition, system 1 further includes waste water
Purifier or module 5, waste water are cleaned before being discharged via delivery pipe 6 in the waste water purification device or module 5.
In illustrated embodiment, purification of waste water module 5 is arranged at ground G or less about 0.5m.Module 5 is in side surface and top side and bottom
Side covers (see Fig. 3) by protection sheet rubber 21.The top of module 5 is provided with geotextile screening glass (not shown), and mould
Block 5 is covered by soil mass (not shown).
In other embodiments, module 5 can be arranged on ground G other depths below or ground G.As
Example, sludge extractor 2 can be that sludge disclosed in the WO 2000/004972A1 developed by the present inventor detaches
Device.However, other kinds of particle separative element can also be mounted on before water purifying module 5 or upstream.
Purification of waste water module 5 is more fully described with Fig. 3 referring now to Fig. 2.Module 5 includes multiple carrier elements,
It is the shape of plate 7 in the embodiment, this can be illustrated in detail below.The pile one of carrier board 7 one is vertical to be stacked, from
And form multiple layers.Separator is accompanied between each layer carrier board 7.In the disclosed embodiment, separator include for example by
Water-permeable geotextile sheet material 8 made of polyethylene.Geotextile sheet material 8 is arranged in the load of different levels in an overlapping manner
Between body plate 7, and geotextile sheet material 8 does not cover the whole surface of carrier board 7.On the contrary, geotextile sheet material 8 is arranged to
Cover the presumptive area between each pair of carrier board 7.In the shown embodiment, per alternating floor carrier board 7, between carrier board 7, soil
Work fabric sheet 8 is arranged to a 8a, rather than the long side 7a up to plate 7 in the central region of plate 7.
In addition, between 7 pairs of remaining carrier board, it is arranged there are two geotextile 8b along each long side 7a of plate 7,
It is left without the section of geotextile covering in centre.The geotextile 8a being arranged in the intermediate region of plate 7 compares adjacent panels
To not by geotextile cover part -- region i.e. along the long side 7a of plate 7 between 8b -- it is wider.It is similar
Ground, 8b are more wider than the region that adjacent panels centering is not covered by geotextile.Therefore, by means of geotextile 8a, 8b, labyrinth
Path is formed as through module 5.
Cleaning module 5 further includes elongated distribution pipe 9, and distribution pipe 9 is connected to the outlet 4 of sludge extractor 2 and is arranged
At the top of the carrier board 7 for the stacking for constituting module 5.Distribution pipe 9 has multiple perforation 18a, 18b along its length so that waits for net
The water of change can reach the entire extension of module 5.In addition, module 5 includes air inlet passage 10 and air discharging channel
11.As shown in Figure 1, two channels 10,11 extend horizontally through module 5, and continue to extend towards ground G as shown in Figure 1
For VERTICAL TUBE 10a and 11a.
As shown in figure 3, module 5 is arranged in biological bed component 12, which, which has, is embedded in gravel layer 13
In delivery pipe 6.Sand bed 14 is provided between gravel layer 13 and module 5.Sand bed 14 and gravel layer 13 allow to arrange in water direction
It puts in the way of the flowing of pipe 6 and water is further purified.
A part for carrier board 7 is shown in Fig. 4.Plate 7 includes the countless filaments 15 of e.g. thermoplastic polymer, filament 15
It can be thermally cured to obtain the shape of plate.Preferably, filament 15 irregularly distorts together, in this way between filament 15
Form countless gaps 16.Furthermore it is preferred that using such filament 15:The a diameter of about 2-3mm of the filament 15 has tarnish
And rough or coarse surface.In the present embodiment, the preferably about 40mm of plate 7 is thick.In other embodiments,
The diameter of filament 15 and the thickness of plate 7 can change.Coarse filament 15 provides surface appropriate for microorganism growth-gen.Filament
15 distortion and complications shape provide very huge adhering zone for the microorganism in each carrier board 7.As an example,
The module 5 of size with 110 × 55 × 25cm is with 82m2Attaching surface.
In some embodiments, plastic wire 17 is inserted between first vector plate 7 and adjacent geotextile sheet material 8, so as to
Sheet material 8 is pressed to adjacent carrier board 7 by first vector plate 7 in an uniform manner.Such layer assembly, packet are shown in Fig. 5
Include carrier board 7, geotextile sheet material 8 and net 17.
Hereinafter, the water treatment procedure of system 1 will be described in conjunction with Fig. 1 and Fig. 6.In use, the filament 15 of carrier board 7
It is covered by microorganism growth-gen with geotextile sheet material 8, microorganism growth-gen decomposes BOD (biochemical oxygen demand (BOD)) and COD, and (chemistry needs
Oxygen amount).
Pending or purification water or sewage flow to sludge extractor 2 via entrance 3 from family or other facilities.In the change
In manure pit or sludge extractor 2, granule foreign is subsequently eliminated from the water.The decomposition of granule foreign needs a large amount of oxygen.Therefore, have
Profit is just to be had been removed in sludge extractor 2, at least largely remove these impurity.Hereafter, water is via outlet 4
Cleaning module 5 is flowed into from separator 2 by distribution pipe 9.Water drips to the interlayer of carrier board 7 from distribution pipe 9 by perforate 18a, 18b
In structure.Since carrier board 7 includes gap 16, so water can flow through the carrier board.Carrier board 7 is by with arrow in Fig. 6
Mode flows through the waste water of module 5 to be perfused shown in head.
Since fabric sheet 8 is covered by microorganism growth-gen, so they can be half permeable.Therefore, water can be partly
It collects in the top of each sheet material 8 and is flowed along each sheet material 8, and therefore flow through on each sheet material 8
Carrier board 7.This is marked with black solid arrow in figure 6.However, some water can drip sheet material 8, this is marked by drop 19.
Therefore, water slowly, mainly flows through every layer of carrier board 7 to and fro, and partially by the sheet material of module 58 so that
Allow bacterium that wherein entrained impurity is reduced (COD and BOD).Shown in Fig. 5 includes that geotextile sheet material 8 is pressed to plate
In the embodiment of 7 net 17, water more uniformly collects on the top of geotextile sheet material 8, to promote evenly to generate
Biological skin.
When water reaches the bottom of module 5, it trickles into sand bed 14, then by gravel layer 13, eventually by row
Put pipe 6.
The air of entrance flows through air inlet passage 10, effectively provides oxygen to module 5.With dotted line arrow in Fig. 6
Head shows that oxygen conveys.That is, oxygen is conveyed from air inlet passage 10 and from distribution pipe 9 towards air discharging channel 11.It is whole
A module 5 is to be effectively provided with oxygen.
Every layer of carrier board 7 can only accommodate a certain amount of water.It is thus impossible to can be arranged by the water that first layer is absorbed and handled
Go out first layer carrier board 7 and drops to next layer.In this process, the microorganism growth-gen of aging and necrosis can be by from the
It is washed away on one layer of carrier board 7 and as excessive water is carried to next layer of carrier board 7.Thus chain reaction is generated so that come
The microorganism growth-gen of necrosis is carried towards the outlet of module 5 from every layer of excessive water.Therefore, module 5 is self-cleaning,
And the risk blocked is caused to reduce due to material stacking.This flushing process is for the multiple modules 5 being connected to each other
Larger component (not shown) for be vital because such component is more likely to occur blocking.Have this
It in the more component of multimode 5, also has and significantly rinses, this is because component is exposed to the water flow of bigger.
In an embodiment (not shown), first block of data 50, two or more modules can be connected to each other.In this case, it guides
Pipe 22 is inserted into about 10cm in the air duct 10,11 of the first module 5.The opposite end of guiding tube 22 is projected into outside module 5
About 10cm.The protrusion of pipe 22 can be plugged into the air duct of the second adjacent block, and thus the air of two modules is logical
Road is aligned, and air flow passes through modular assembly.It schematically shows in fig. 2 in air discharging channel 11
Guiding tube 22.
If desired, as shown in Fig. 2, compressor 20 or another air supply device may be coupled to air inlet passage
10.This in module 5 there are in the case of high biological load, such as when multiple modules 5 be connected to each other to be formed it is long
When air duct 10,11, it may be possible to suitable.
The wastewater treatment module 5 ' slightly changed is shown, wherein on the top of the carrier board 7 vertically stacked in Fig. 7
The side of 9 proximity modules 5 ' of elongated distribution pipe is arranged.Separator is slightly different, and is constructed with another kind to place, and is existed in this way
The waste water stream (as shown by arrows) changed is generated in module 5 '.
Wastewater treatment module 5 is above described with biological bed embodiment, but can also be by module 5 for oozing
In saturating embodiment or in the infiltration embodiment of enhancing.In the case of the infiltration embodiment of enhancing, by 13 He of gravel layer
Delivery pipe 6 is excluded from component.In the case where permeating embodiment, by both sand bed 14 and gravel layer 13 and delivery pipe 6
All excluded from component.
It should be appreciated that the concept of the utility model is not limited to embodiment described herein, and in the following claims
Many modifications are all feasible in the scope of the utility model illustrated.For example, separator is not limited to be made by geotextile
At alternatively, they can include open cell foamed plastic or other permeable materials.In addition, separator can have not
Same thickness, and separator and plastic wire 17 can be made into a unit.The quantity of carrier element and separator and this
The arrangement that is mutually related of a little components can change according to specific purification requirement or design requirement.As long as reach to waste water into
The purpose of row processing, so that it may to use different flow patterns in module 5.
Claims (10)
1. a kind of module for wastewater treatment, which is characterized in that including:
With multiple carrier elements (7) that sandwich is arranged, the carrier element (7) is configured to be perfused by waste water stream;With
The multiple separators (8) being arranged between the carrier element (7), the separator (8) are configured to guide the waste water
Stream passes through the module (5).
2. the module according to claim 1 for wastewater treatment, which is characterized in that the carrier element (7) and described
Separator (8) is configured to be covered by microorganism growth-gen.
3. the module according to claim 1 or 2 for wastewater treatment, which is characterized in that the separator (8) is arranged to
Flow is guided to pass through the module (5) in a manner of tortuous.
4. the module according to claim 1 or 2 for wastewater treatment, which is characterized in that each carrier element
It include the plate being made of the filament (15) irregularly distorted.
5. the module according to claim 1 or 2 for wastewater treatment, which is characterized in that the separator (8) includes soil
Work fabric sheet.
6. the module according to claim 1 or 2 for wastewater treatment, which is characterized in that the separator (8) is can be partly
Permeable.
7. the module according to claim 1 or 2 for wastewater treatment, which is characterized in that further include for described will give up
Water is transported to the distribution pipe (9) of the module (5).
8. the module according to claim 1 or 2 for wastewater treatment, which is characterized in that further include for microorganism
Supply the air inlet passage (10) and air discharging channel (11) of oxygen.
9. a kind of carrier element, which is characterized in that the carrier element is including according to any one of claim 1 to 8 institute
In the module (5) for wastewater treatment stated, the carrier element (7) includes the filament (15) irregularly distorted.
10. a kind of waste water treatment system, including sludge extractor (1) and at least one module for wastewater treatment, feature
It is, the module for wastewater treatment is according to module described in any item of the claim 1 to 8 (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721191566.2U CN207998490U (en) | 2017-09-18 | 2017-09-18 | For the module of wastewater treatment, carrier element and waste water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721191566.2U CN207998490U (en) | 2017-09-18 | 2017-09-18 | For the module of wastewater treatment, carrier element and waste water treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207998490U true CN207998490U (en) | 2018-10-23 |
Family
ID=63835157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721191566.2U Expired - Fee Related CN207998490U (en) | 2017-09-18 | 2017-09-18 | For the module of wastewater treatment, carrier element and waste water treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207998490U (en) |
-
2017
- 2017-09-18 CN CN201721191566.2U patent/CN207998490U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190927 Address after: Sweden Karlskrona Patentee after: Drainage patent Co.,Ltd. Address before: Karlskruner Patentee before: BAGA WATER TECHNOLOGY AB |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210512 Address after: Sweden Karlskrona Patentee after: BAGA WATER TECHNOLOGY AB Address before: Sweden Karlskrona Patentee before: Drainage patent Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |