CN216890361U - Filter for generating biomass charcoal clean water body by utilizing micro-plastic mediated straw pyrolysis - Google Patents
Filter for generating biomass charcoal clean water body by utilizing micro-plastic mediated straw pyrolysis Download PDFInfo
- Publication number
- CN216890361U CN216890361U CN202123270126.5U CN202123270126U CN216890361U CN 216890361 U CN216890361 U CN 216890361U CN 202123270126 U CN202123270126 U CN 202123270126U CN 216890361 U CN216890361 U CN 216890361U
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- filter
- tank
- plastic
- mediated
- biomass charcoal
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000002028 Biomass Substances 0.000 title claims abstract description 32
- 239000003610 charcoal Substances 0.000 title claims abstract description 32
- 239000010902 straw Substances 0.000 title claims abstract description 29
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 28
- 230000001404 mediated effect Effects 0.000 title claims abstract description 25
- 229920003023 plastic Polymers 0.000 title claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 34
- 238000001179 sorption measurement Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 11
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 14
- 239000003463 adsorbent Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 229920000426 Microplastic Polymers 0.000 description 4
- 239000002154 agricultural waste Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 231100000739 chronic poisoning Toxicity 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Water Treatment By Sorption (AREA)
Abstract
The utility model discloses a filter for generating biomass charcoal clean water by utilizing micro-plastic mediated straw pyrolysis, which comprises a pressurizing device and a filtering tank, wherein the pressurizing device is connected with the filtering tank; the pressurizing device is arranged at the top end of the filter tank and is in sealing connection with the filter tank; the pressurizing device is used for pressurizing the water sample in the filtering tank and accelerating the filtering speed of the water sample; a filter sieve and an adsorption bag are arranged in the filter tank. The pressurizing device comprises a top cover connected with the filter tank; the top cover is provided with a piston cylinder, and a piston is arranged in the piston cylinder; the lower end of the piston cylinder is communicated with the filter tank. The filter screens include a first filter screen and a second filter screen. The filter for generating the biomass charcoal clean water body by utilizing the micro-plastic mediated straw pyrolysis has the advantages of high filtering efficiency, convenience in replacing the filter sieve and the adsorption bag, good environmental protection performance and the like.
Description
Technical Field
The utility model relates to a water filtering device, in particular to a filter for generating biomass charcoal clean water by utilizing micro-plastic mediated straw pyrolysis.
Background
Heavy metals, which are metals with a density of greater than 4.5g/cm3, include gold, silver, copper, iron, mercury, lead, cadmium, etc., and are accumulated in the human body to a certain extent, which can cause chronic poisoning. Heavy metal pollution refers to environmental pollution caused by heavy metals or their compounds, and is mainly caused by human factors such as mining, waste gas discharge, sewage irrigation, and use of heavy metal products. The heavy metal content in the environment increases due to human activities, out of the normal range, and causes deterioration of the environmental quality.
Heavy metals are highly toxic and pose irreversible health hazards to humans. In particular, mercury, cadmium, lead, chromium and the like have obvious biotoxicity. They cannot be degraded by microorganisms in water bodies, but can only undergo various morphological interconversion and dispersion, enrichment processes (i.e. migration).
Before the heavy metal polluted wastewater is discharged by a factory, heavy metal pollutants in the water body must be removed, so that the amount of heavy metals contained in the water body environment can be reduced. There are many methods for removing heavy metals in water: chemical precipitation, porous material adsorption, filter of adsorbent material, etc.
The sewage treatment device used at present generally adopts an adsorbing material to adsorb heavy metal ions and phenolic substances. Such conventional devices require periodic maintenance of the adsorbent material. However, the common adsorbing materials are fixedly arranged in the adsorption kettle, and the adsorbing materials are inconvenient to replace, so that the maintenance work is complicated, and the workload and the labor intensity of workers are increased. In addition, in the prior art, the problem of low water sample settling speed exists, and the efficiency of sewage treatment is reduced.
SUMMERY OF THE UTILITY MODEL
In order to avoid the defects in the prior art, the utility model provides the filter for generating the biomass charcoal clean water body by utilizing the micro-plastic mediated straw pyrolysis, so that the maintenance efficiency is improved, and the water sample sedimentation speed can be improved.
The utility model adopts the following technical scheme to solve the technical problem.
The filter for generating biomass charcoal clean water by utilizing micro-plastic mediated straw pyrolysis comprises a pressurizing device 1 and a filtering tank 2; the pressurizing device 1 is arranged at the top end of the filter tank 2; the pressurizing device 1 is connected with the filter tank 2 in a sealing way;
the pressurizing device 1 is used for pressurizing the water sample in the filtering tank 2 to accelerate the filtering speed of the water sample;
a filter sieve and an adsorption bag 4 are arranged in the filter tank 2.
Preferably, the pressurization device 1 comprises a top cover 101 for connection with the filtration tank; a piston cylinder 102 is arranged on the top cover 101, and a piston 103 is arranged in the piston cylinder 102; the lower end of the piston cylinder 102 is communicated with the filter tank 2.
The filter for generating biomass charcoal to clean water by utilizing micro-plastic mediated straw pyrolysis has the structural characteristics that:
preferably, the filter screens include a first filter screen 301 and a second filter screen 302.
Preferably, the filter tank comprises a first tank body 201, a second tank body 202 and a third tank body 203 from top to bottom; the first filter screen 301 is located inside the first tank 201; the adsorbent bags 4 are located within the second tank 202 and the second filter screen 302 is located within the third tank 203.
Preferably, the first tank 201 is hermetically connected with the second tank 202, and the second tank 202 is hermetically connected with the third tank 203.
Preferably, the sealing connection between the first tank 201 and the second tank 202 is a threaded connection.
Preferably, the sealed connection of the second tank 202 and the third tank 203 is a threaded connection.
Preferably, the screen mesh size of the first filter screen 301 and the second filter screen 302 is 0.45 μm each.
Preferably, the screen mesh size of the first filter screen 301 and the second filter screen 302 is 0.22 μm each.
Preferably, the first filter screen 301 and the second filter screen 302 are fixed inside the first tank 201 and the third tank 203, respectively, by screws.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model discloses a filter for generating biomass charcoal clean water by utilizing micro-plastic mediated straw pyrolysis, which comprises a pressurizing device and a filtering tank, wherein the pressurizing device is connected with the filtering tank; the pressurizing device is arranged at the top end of the filter tank and is in sealing connection with the filter tank; the pressurizing device is used for pressurizing the water sample in the filtering tank and accelerating the filtering speed of the water sample; a filter sieve and an adsorption bag are arranged in the filter tank. The pressurizing device comprises a top cover connected with the filter tank; the top cover is provided with a piston cylinder, and a piston is arranged in the piston cylinder; the lower end of the piston cylinder is communicated with the filter tank. The filter screens include a first filter screen and a second filter screen.
1. Through setting up special pressure device, can exert external force when the water filters slowly, improve filtration efficiency.
2. The tank body of the filter tank is divided into three parts which can be disassembled mutually, so that the filter sieve and the adsorption bag can be conveniently taken out, and the filter sieve and the adsorption bag can be conveniently replaced.
3. The adsorbent is biomass charcoal which is prepared by mixing and calcining two agricultural wastes of micro plastic and straw powder according to a certain proportion. The adsorption bag can repeatedly utilize two kinds of most common agricultural wastes, has high filtration efficiency, and is easy to obtain raw materials for preparation, economic and clean in process.
The filter for generating the biomass charcoal clean water body by utilizing the micro-plastic mediated straw pyrolysis has the advantages of high filtering efficiency, convenience in replacing the filter sieve and the adsorption bag, good environmental protection performance and the like.
Drawings
Fig. 1 is a schematic structural diagram of a filter tank of the filter for generating biomass charcoal clean water by utilizing micro-plastic mediated straw pyrolysis.
Fig. 2 is a schematic structural diagram of the pressurizing device of the filter for generating biomass charcoal to clean water by utilizing micro-plastic mediated straw pyrolysis.
The present invention will be further described with reference to the following detailed description and accompanying drawings.
Detailed Description
Referring to fig. 1-2, the filter for generating biomass charcoal clean water by utilizing micro-plastic mediated straw pyrolysis according to the utility model comprises a pressurizing device 1 and a filtering tank 2; the pressurizing device 1 is arranged at the top end of the filter tank 2; the pressurizing device 1 is connected with the filter tank 2 in a sealing way;
the pressurizing device 1 is used for pressurizing the water sample in the filtering tank 2 to accelerate the filtering speed of the water sample;
a filter sieve and an adsorption bag 4 are arranged in the filter tank 2.
Preferably, the pressurization device 1 comprises a top cover 101 for connection with the filtration tank; a piston cylinder 102 is arranged on the top cover 101, and a piston 103 is arranged in the piston cylinder 102; the lower end of the piston cylinder 102 is communicated with the filter tank 2.
When the staff discovers that the filtering speed of the water sample in the filter is slow, the air in the filtering tank can be compressed in a mode that the water sample is not easy to settle through the piston of the pressurizing device, and external force is applied from the top to increase the filtering speed and improve the filtering speed.
Preferably, the filter screens include a first filter screen 301 and a second filter screen 302.
Preferably, the filter tank comprises a first tank body 201, a second tank body 202 and a third tank body 203 from top to bottom; the first filter screen 301 is located inside the first tank 201; the adsorbent bags 4 are located within the second tank 202 and the second filter screen 302 is located within the third tank 203.
Preferably, the first tank 201 is hermetically connected with the second tank 202, and the second tank 202 is hermetically connected with the third tank 203.
Preferably, the sealing connection between the first tank 201 and the second tank 202 is a threaded connection.
Preferably, the sealed connection of the second tank 202 and the third tank 203 is a threaded connection.
Preferably, the screen mesh size of the first filter screen 301 and the second filter screen 302 is 0.45 μm each.
Preferably, the screen mesh size of the first filter screen 301 and the second filter screen 302 is 0.22 μm each.
Preferably, the first filter screen 301 and the second filter screen 302 are fixed inside the first tank 201 and the third tank 203, respectively, by screws.
In the filter for generating the biomass charcoal clean water body by utilizing the micro-plastic mediated straw pyrolysis, a water sample containing heavy metals is added into the filter tank from the water inlet 2011 on the first tank body 201. The water inlet needs to be sealed by a sealing cover when pressurized. In consideration of the problem of pressurization, a water inlet can be omitted, and water samples are directly poured from the top opening of the filter tank. The suspended solid in the water sample is filtered through the first filter sieve, and the filtered water sample enters the second tank body and is subjected to secondary filtration through the adsorption bag. And the water sample filtered by the adsorption bag enters a third tank body, and is filtered for the third time by the second filter sieve.
The third tank body is also used as a collector for collecting cleaner water after three times of filtration. A water outlet (not shown in the figure) is arranged on the third tank body and used for leading out the cleaner water body after the third filtration.
The two filter screens and the filter tank are fixed through screws, so that the filter screens can be conveniently detached for cleaning, and the filter screens are fixed in the filter tank again after cleaning.
Threaded connection between the first jar body and the second jar body, threaded connection between the second jar body and the third jar body consequently can dismantle three jar bodies in proper order get off, conveniently pull down the filter sieve and adsorb the package.
The screen mesh size of the filter screen has different specifications of 0.45 μm, 0.22 μm and the like. The first filter screen and the second filter screen are the same in size. The first filter sieve and the second filter sieve are the same size, or all are 0.45 μm. Or all the filter screens are 0.22 mu m, and the filter grids meeting the standard size of water sample detection can be replaced at any time, so that two sets of filter screens are provided, one set of filter screens is 0.45 mu m (the first filter screen and the second filter screen), and the other set of filter screens is 0.22 mu m (the first filter screen and the second filter screen), and one set of filter screens is used for standby.
And a biomass charcoal adsorbent is arranged in the adsorption bag. The adsorbent is biomass charcoal prepared by mixing and calcining two agricultural wastes of micro plastic and straw powder according to a certain proportion. The biomass charcoal is prepared from micro plastic and straw powder according to the weight ratio of 1: 4 proportion of the mixture is doped and then the mixture is generated under the condition that the pyrolysis final temperature is 400 ℃. Uniformly mixing the micro plastic and the straw powder in a crucible according to a preset proportion, calcining in a muffle furnace, and selecting a pyrolysis final temperature of 400 ℃, a pyrolysis speed of 5 ℃/min, and continuing the final temperature for 3 hours to obtain the biomass charcoal. And putting the biochar into a packaging bag to prepare an adsorption bag. The adsorption bag disclosed by the utility model can be used for repeatedly utilizing two most common agricultural wastes, and has the advantages of high filtration efficiency, readily available raw materials for preparation, economy and clean process.
The biomass charcoal generated by the micro-plastic mediated pyrolysis of the straw powder has good adsorption effect on heavy metals in water.
A water sample is injected from the upper part, large granular substances such as suspended matters are removed through the first filter sieve, then the water enters the second tank body filled with the adsorbent bag, certain heavy metals are removed, and finally the water flows out of a cleaner water body through the second filter sieve in the third tank body.
The biomass charcoal adsorbent in the adsorption bag is powdery particles, and can be filled into a small cloth bag firstly to make the adsorption bag similar to a tea bag, and then the adsorption bag is filled into the second tank body.
The two filter sieves are taken out for cleaning at regular intervals, and the adsorption bag also carries out regular detection and replacement of the biomass charcoal.
In specific implementation, the screen mesh size of the selected filter screen is 0.45 μm, 0.22 μm and the like, only one screen mesh is placed at a time, and the screen mesh meeting the water sample detection standard size can be replaced at any time.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A filter for generating biomass charcoal to clean water by utilizing micro-plastic mediated straw pyrolysis is characterized by comprising a pressurizing device (1) and a filtering tank (2); the pressurizing device (1) is arranged at the top end of the filtering tank (2); the pressurizing device (1) is connected with the filtering tank (2) in a sealing way;
the pressurizing device (1) is used for pressurizing the water sample in the filtering tank (2) and accelerating the filtering speed of the water sample;
a filter sieve and an adsorption bag (4) are arranged in the filter tank (2).
2. The filter for cleaning water by utilizing micro-plastic mediated straw pyrolysis to generate biomass charcoal as claimed in claim 1, wherein the pressurizing device (1) comprises a top cover (101) for connecting with the filter tank; a piston cylinder (102) is arranged on the top cover (101), and a piston (103) is arranged in the piston cylinder (102); the lower end of the piston cylinder (102) is communicated with the filter tank (2).
3. The filter for cleaning water by utilizing micro-plastic mediated straw pyrolysis to generate biomass charcoal as claimed in claim 1, wherein the filter screen comprises a first filter screen (301) and a second filter screen (302).
4. The filter for generating the biomass charcoal clean water body by utilizing the micro-plastic mediated straw pyrolysis as claimed in claim 3, wherein the filter tank comprises a first tank body (201), a second tank body (202) and a third tank body (203) from top to bottom in sequence; the first filter screen (301) is located within the first tank (201); the adsorption bag (4) is positioned in the second tank body (202), and the second filter screen (302) is positioned in the third tank body (203).
5. The filter for cleaning water by utilizing the biomass charcoal produced by the micro-plastic mediated straw pyrolysis as claimed in claim 4, wherein the first tank (201) is hermetically connected with the second tank (202), and the second tank (202) is hermetically connected with the third tank (203).
6. The filter for cleaning water by utilizing the micro-plastic mediated straw pyrolysis to generate the biomass charcoal as claimed in claim 5, wherein the sealing connection between the first tank body (201) and the second tank body (202) is a threaded connection.
7. The filter for cleaning water by utilizing the micro-plastic mediated straw pyrolysis for generating the biomass charcoal as claimed in claim 5, wherein the sealing connection between the second tank body (202) and the third tank body (203) is a threaded connection.
8. The filter for cleaning water by utilizing the micro-plastic mediated straw pyrolysis for generating the biomass charcoal as claimed in claim 3, wherein the screen mesh size of the first filter screen (301) and the screen mesh size of the second filter screen (302) are both 0.45 μm.
9. The filter for cleaning water by utilizing the micro-plastic mediated straw pyrolysis for generating the biomass charcoal as claimed in claim 3, wherein the screen mesh size of the first filter screen (301) and the screen mesh size of the second filter screen (302) are both 0.22 μm.
10. The filter for cleaning water by utilizing the micro-plastic mediated straw pyrolysis to generate the biomass charcoal as claimed in claim 4, wherein the first filter screen (301) and the second filter screen (302) are fixed in the first tank body (201) and the third tank body (203) by screws respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123270126.5U CN216890361U (en) | 2021-12-23 | 2021-12-23 | Filter for generating biomass charcoal clean water body by utilizing micro-plastic mediated straw pyrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123270126.5U CN216890361U (en) | 2021-12-23 | 2021-12-23 | Filter for generating biomass charcoal clean water body by utilizing micro-plastic mediated straw pyrolysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216890361U true CN216890361U (en) | 2022-07-05 |
Family
ID=82208094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123270126.5U Expired - Fee Related CN216890361U (en) | 2021-12-23 | 2021-12-23 | Filter for generating biomass charcoal clean water body by utilizing micro-plastic mediated straw pyrolysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216890361U (en) |
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2021
- 2021-12-23 CN CN202123270126.5U patent/CN216890361U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20220705 |