CN211847541U - Laboratory sewage treatment plant - Google Patents
Laboratory sewage treatment plant Download PDFInfo
- Publication number
- CN211847541U CN211847541U CN202020123013.9U CN202020123013U CN211847541U CN 211847541 U CN211847541 U CN 211847541U CN 202020123013 U CN202020123013 U CN 202020123013U CN 211847541 U CN211847541 U CN 211847541U
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- Prior art keywords
- box
- pipe
- filter screen
- ultraviolet
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 239000003814 drug Substances 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 238000005273 aeration Methods 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 20
- 238000000746 purification Methods 0.000 claims description 16
- 241000220317 Rosa Species 0.000 claims description 8
- 239000008394 flocculating agent Substances 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims 7
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000002341 toxic gas Substances 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Physical Water Treatments (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model relates to the technical field of sewage treatment, in particular to a laboratory sewage treatment device, which comprises a filter box, a driven wheel, a motor and an ultraviolet box, wherein the top end of the filter box is provided with a feeding pipe, the front and back directions of the inner upper part area and the lower part area of the filter box are respectively provided with a first sliding plate and a second sliding plate, the inner upper part area and the lower part area of the filter box are respectively and transversely provided with a first filter screen and a second filter screen, the first filter screen and the second filter screen are respectively in contact connection with the first sliding plate and the second sliding plate, the aperture of the first filter screen is larger than that of the second filter screen, the bottom end of the filter box is provided with a discharging pipe, the top end of the ultraviolet box is communicated with the bottom end of the discharging pipe, a control box is arranged on the ultraviolet box, the top output end of the motor is concentrically and fixedly, and the toxic gas in the liquid medicine is conveniently purified, and the use reliability is reduced.
Description
Technical Field
The utility model relates to a sewage treatment technical field specifically is a laboratory sewage treatment plant.
Background
As is known, laboratories are sites for carrying out experiments, various chemical solutions are generally used, the chemical solutions have strong acid and strong alkali corrosion effects, and the like, and the chemical solutions after the experiments are generally directly discharged to the outside, so that the surrounding environment and the health of people are affected, and the problem of purification treatment of the chemical solutions is urgent.
The utility model discloses a chinese patent No. CN 201420743682.0's utility model discloses a laboratory sewage treatment plant, including the collecting pit with install the platform in the collecting pit top, install the integrated treatment facility of sewage with the collecting pit pipe connection on the platform, the integrated treatment facility of sewage passes through pipe connection clear water tank and DSBR reactor, the integrated treatment facility of sewage is installed on the integrated equipment mounting bracket, the integrated equipment mounting bracket is fixed on the platform, still installs the PLC control box that is used for controlling integrated treatment facility on the integrated equipment mounting bracket.
The above patent found in use that it also had the following problems: the large impurities contained in the liquid medicine are inconvenient to remove, and the toxic gas in the liquid medicine is inconvenient to purify, so that the use reliability is low.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a laboratory sewage treatment device which is convenient to remove large impurities contained in liquid medicine, and can purify toxic gas in the liquid medicine and reduce use reliability.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a laboratory sewage treatment device comprises a filter box, a driven wheel, a motor and an ultraviolet box, wherein a feeding pipe is arranged at the top end of the filter box, a first sliding plate and a second sliding plate are respectively arranged in the front-back direction of the inner upper part area and the lower part area of the filter box, a first filter screen and a second filter screen are respectively and transversely arranged in the inner upper part area and the lower part area of the filter box, the first filter screen and the second filter screen are respectively in contact connection with the first sliding plate and the second sliding plate, the aperture of the first filter screen is larger than that of the second filter screen, a discharging pipe is arranged at the bottom end of the filter box, the top end of the ultraviolet box is communicated with the bottom end of the discharging pipe, a control box is arranged on the ultraviolet box, a driving wheel is concentrically and fixedly arranged at the top output end of the motor, and a stirring, the top end of the stirring shaft penetrates through the bottom end of the ultraviolet box and extends towards the inside of the ultraviolet box, stirring blades are symmetrically arranged at the left end and the right end of the stirring shaft, the driving wheel is meshed with the driven wheel, a settling box is arranged at one end of the ultraviolet box, a first water pump and a medicine inlet pipe are respectively arranged at the top end of the settling box, the bottom end of the medicine inlet pipe is communicated with the top end of the settling box, the bottom end output end of the first water pump penetrates through the top end of the settling box and extends towards the inside of the settling box, the top end input end of the first water pump penetrates through the side wall of the ultraviolet box and extends towards the inside of the ultraviolet box, an aeration box is arranged at one end of the settling box, an air hole is formed at the top end of the aeration box, a second water pump is arranged at the top end of the aeration box, and the bottom input end of the second water pump penetrates, the input end of the second water pump is provided with a communicating pipe, the top end of the communicating pipe is communicated with a water inlet pipe, the input end of the communicating pipe penetrates through one end of the aeration tank and extends towards the inside of the aeration tank, one end of the aeration tank is provided with a purification tank, the output end of the water inlet pipe penetrates through one end of the purification tank and extends towards the inside of the purification tank, and the lower region of one end of the purification tank is communicated with a discharge pipe.
Preferably, the communicating pipe and the water inlet pipe are respectively provided with a first valve and a second valve in a communicating mode.
Preferably, the one end of first filter screen and second filter screen all extends to the outer end of rose box, the one end of first filter screen and second filter screen all is provided with sealed the pad, each sealed one end of filling up all contacts with the one end of rose box, the regional screwed pipe that is provided with in one end lower part of rose box, the screwed pipe passes the lateral wall of rose box and extends and internal contact, the spiral shell dress of screwed pipe is connected with the threaded rod, the other end spiral shell dress of threaded rod is connected with the clamping bar, the one end of clamping bar all with each sealed pad contact.
Preferably, a pipe cap is arranged on the discharge pipe, the outer side of the circumference of the discharge pipe is of an external thread structure, the inner side of the circumference of the pipe cap is of an internal thread structure, and the discharge pipe is in threaded connection with the pipe cap.
Preferably, the radius of the driven wheel is larger than that of the driving wheel.
Preferably, a supporting column is arranged at the bottom end of the driven wheel.
Preferably, a flocculating agent is placed in the medicine inlet pipe.
Preferably, the bottom end of the motor is provided with a bottom plate, and the top end of the bottom plate is connected with the bottom end of the supporting column
(III) advantageous effects
Compared with the prior art, the utility model provides a laboratory sewage treatment plant possesses following beneficial effect:
the laboratory sewage treatment device can conveniently remove large impurities in the sewage through the installation of the first filter screen and the second filter screen, the output end at the top of the motor drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate, the driven wheel drives the stirring shaft to rotate, the stirring blades are driven to rotate by the stirring shaft, the intensity of the ultraviolet box is adjusted by the control box, so that the ultraviolet box starts to work, sewage is conveniently and uniformly stirred, and the sterilization and disinfection are conveniently and uniformly carried out, water is sucked into the settling tank through the first water pump, the flocculant is put into the settling tank through the pesticide inlet pipe, suspended substances in the sewage are conveniently settled, the sewage is sucked into the aeration tank through the second water pump, so that the water quality is prevented from being rotten and smelly, the oxygen content in the sewage is increased, water in the aeration tank is sucked into the purification tank through the water inlet pipe, and pollutants such as micro-particles, harmful air, bacteria and the like are removed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a portion of the enlarged structure of FIG. 1;
FIG. 3 is a schematic view of a portion of the enlarged structure of FIG. 1 at B according to the present invention;
fig. 4 is a left side view structure diagram of the present invention.
In the figure: 1. a filter box; 2. a driven wheel; 3. a motor; 4. an ultraviolet box; 5. a feed pipe; 6. a first slide plate; 7. a second slide plate; 8. a first filter screen; 9. a second filter screen; 10. a discharge pipe; 11. a control box; 12. a stirring shaft; 13. stirring blades; 14. a settling tank; 15. a first water pump; 16. a medicine inlet pipe; 17. an aeration tank; 18. air holes; 19. a second water pump; 20. a communicating pipe; 21. a water inlet pipe; 22. a purification box; 23. a discharge pipe; 24. a first valve; 25. a second valve; 26. a gasket; 27. a threaded pipe; 28. a threaded rod; 29. a clamping lever; 30. a pipe cap; 31. a support pillar; 32. a base plate; 33. a driving wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, a laboratory sewage treatment device comprises a filter box 1, a driven wheel 2, a motor 3 and an ultraviolet box 4, wherein a feeding pipe 5 is arranged at the top end of the filter box 1, a first sliding plate 6 and a second sliding plate 7 are respectively arranged in the front and back directions of the upper area and the lower area inside the filter box 1, a first filter screen 8 and a second filter screen 9 are respectively and transversely arranged in the upper area and the lower area inside the filter box 1, the first filter screen 8 and the second filter screen 9 are respectively in contact connection with the first sliding plate 6 and the second sliding plate 7, the aperture of the first filter screen 8 is larger than that of the second filter screen 9, a discharging pipe 10 is arranged at the bottom end of the filter box 1, the top end of the ultraviolet box 4 is communicated with the bottom end of the discharging pipe 10, a control box 11 is arranged on the ultraviolet box 4, a driving wheel 33 is concentrically and fixedly arranged at the, a stirring shaft 12 is concentrically and fixedly arranged at the top end of the driven wheel 2, the top end of the stirring shaft 12 penetrates through the bottom end of the ultraviolet box 4 and extends towards the inside of the ultraviolet box 4, stirring blades 13 are symmetrically arranged at the left end and the right end of the stirring shaft 12, a driving wheel 33 is meshed and connected with the driven wheel 2, a settling box 14 is arranged at one end of the ultraviolet box 4, a first water pump 15 and a medicine inlet pipe 16 are respectively arranged at the top end of the settling box 14, the bottom end of the medicine inlet pipe 16 is communicated with the top end of the settling box 14, the bottom end output end of the first water pump 15 penetrates through the top end of the settling box 14 and extends towards the inside of the settling box 14, the top end of the first water pump 15 penetrates through the side wall of the ultraviolet box 4 and extends towards the inside of the ultraviolet box 4, an aeration box 17 is arranged at one end of the settling box 14, an air hole 18 is formed at, the bottom input end of the second water pump 19 passes through the top end of the aeration tank 17 and extends towards the inside of the aeration tank 17, the input end of the second water pump 19 is provided with a communicating pipe 20, the top end of the communicating pipe 20 is communicated with a water inlet pipe 21, the input end of the communicating pipe 20 passes through one end of the aeration tank 17 and extends towards the inside of the aeration tank 17, one end of the aeration tank 17 is provided with a purification tank 22, the output end of the water inlet pipe 21 passes through one end of the purification tank 22 and extends towards the inside of the purification tank 22, the lower area of one end of the purification tank 22 is communicated with a discharge pipe 23, through the installation of the first filter screen 8 and the second filter screen 9, large impurities in sewage can be conveniently removed, the top output end of the motor 3 drives the driving wheel 33 to rotate, the driving wheel 33 drives the driven wheel 2 to rotate, the driven wheel 2, the intensity of the ultraviolet box 4 is adjusted through the control box, so that the ultraviolet box 4 starts to work, sewage is conveniently and uniformly stirred, and is conveniently and uniformly sterilized and disinfected, water is sucked into the sedimentation box 14 through the first water pump 15, flocculant is put into the sedimentation box through the pesticide inlet pipe 16, suspended substances in the sewage are conveniently precipitated, the sewage is sucked into the aeration box 17 through the second water pump 19, water quality is prevented from being rotten, the oxygen content in the sewage is increased, the water in the aeration box 17 is sucked into the purification box 22 through the water inlet pipe 21, pollutants such as micro-particles, harmful air and bacteria are removed, the first valve 24 and the second valve 25 are respectively communicated and arranged on the communication pipe 20 and the water inlet pipe 21 and are controlled, water is prevented from flowing randomly, one ends of the first filter screen 8 and the second filter screen 9 extend to the outer end of the filter box 1, one ends of the first filter screen 8 and the second filter screen 9 are respectively provided with the sealing gaskets 26, one end of each sealing gasket 26 is contacted with one end of the filter box 1, a threaded pipe 27 is arranged in the lower area of one end of the filter box 1, the threaded pipe 27 penetrates through the side wall of the filter box 1 and extends to be contacted with the inside, a threaded rod 28 is connected with the threaded pipe 27 in a threaded manner, a clamping rod 29 is connected with the other end of the threaded rod 28 in a threaded manner, one end of the clamping rod 29 is contacted with each sealing gasket 26, the first filter screen 8 and the second filter screen 9 are convenient to disassemble and clean, a pipe cap 30 is arranged on the discharge pipe 23, the outer side of the circumference of the discharge pipe 23 is in an external thread structure, the inner side of the circumference of the pipe cap 30 is in an internal thread structure, the discharge pipe 23 is connected with the pipe cap 30 in a threaded manner, the sewage is prevented from flowing out without being purified, the radius of the driven wheel 2 is larger than that of the driving wheel 33, the small wheel is provided with the large, follow the bottom of driving wheel 2 and be provided with support column 31, support it, prevent to take place to slide, put the flocculating agent in advancing medicine pipe 16, conveniently condense suspended particle, conveniently deposit it, and motor 3's bottom is provided with bottom plate 32, and the top of bottom plate 32 is connected with support column 31's bottom, supports it.
In this embodiment: the model of the motor 3 is Y90S-2; the model of the first water pump 15 is 100 WL-8-4; the model of the second water pump 19 is 100WL 126-5.3-4.
When the laboratory sewage treatment device is used, firstly, sewage is poured into the feeding pipe 5, the sewage passes through the first filter screen 8 and the second filter screen 9 along the feeding, impurities larger than the aperture of the first filter screen 8 are intercepted, the impurities smaller than the aperture of the first filter screen 8 flow onto the second filter screen 9, the impurities larger than the aperture of the second filter screen 9 are intercepted, the impurities smaller than the aperture of the first filter screen 8 are discharged into ultraviolet rays along with the sewage, the control box is adjusted to enable the ultraviolet box 4 to work, the power supply of the motor 3 is started, the output end at the top of the motor 3 drives the driving wheel 33 to rotate, the driving wheel 33 drives the driven wheel 2 to rotate, the driven wheel 2 drives the stirring shaft 12 to rotate, the stirring blade 13 is driven to rotate by the stirring shaft 12, after waiting for a period of time, the power supply of the first water pump 15 is switched on, the sewage is sucked into the settling box 14 by the first water pump 15, a coagulant, after waiting for a period of time, starting a power supply of a second water pump 19, opening a first valve 24, sucking sewage into the aeration tank 17 by the second water pump 19, after waiting for a period of time, closing the first valve 24, opening a second valve 25, sucking water in the aeration tank 17 into the purification tank 22 through a water inlet pipe 21, after waiting for a period of time, unscrewing a pipe cap 30, discharging the water from a discharge pipe 23, collecting by a user, then closing all power supplies, screwing a threaded rod 28 out of a threaded pipe 27, then pulling out the first filter screen 8 and the second filter screen 9 to clean the same, after cleaning, putting the first filter screen 8 and the second filter screen 9 back to original positions according to the operation, and waiting for next use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a laboratory sewage treatment plant which characterized in that: comprises a filter box (1), a driven wheel (2), a motor (3) and an ultraviolet box (4), wherein a feeding pipe (5) is arranged at the top end of the filter box (1), a first sliding plate (6) and a second sliding plate (7) are respectively arranged in the front-back direction of the upper part area and the lower part area of the interior of the filter box (1), a first filter screen (8) and a second filter screen (9) are respectively and transversely arranged in the upper part area and the lower part area of the interior of the filter box (1), the first filter screen (8) and the second filter screen (9) are respectively in contact connection with the first sliding plate (6) and the second sliding plate (7), the aperture of the first filter screen (8) is larger than that of the second filter screen (9), a discharging pipe (10) is arranged at the bottom end of the filter box (1), and the top end of the ultraviolet box (4) is communicated with the bottom end of the discharging pipe, a control box (11) is arranged on the ultraviolet box (4), a driving wheel (33) is concentrically and fixedly arranged at the top output end of the motor (3), a stirring shaft (12) is concentrically and fixedly arranged at the top end of the driven wheel (2), the top end of the stirring shaft (12) penetrates through the bottom end of the ultraviolet box (4) and extends towards the inside of the ultraviolet box (4), stirring blades (13) are symmetrically arranged at the left end and the right end of the stirring shaft (12), the driving wheel (33) is meshed and connected with the driven wheel (2), a settling box (14) is arranged at one end of the ultraviolet box (4), a first water pump (15) and a medicine inlet pipe (16) are respectively arranged at the top end of the settling box (14), the bottom end of the medicine inlet pipe (16) is communicated with the top end of the settling box (14), and the bottom end output end of the first water pump (15) penetrates through the top end of the settling box (14) and extends towards the inside of the settling box, the top input end of the first water pump (15) penetrates through the side wall of the ultraviolet box (4) and extends towards the inside of the ultraviolet box (4), one end of the sedimentation box (14) is provided with an aeration box (17), the top end of the aeration box (17) is provided with an air hole (18), the top end of the aeration box (17) is provided with a second water pump (19), the bottom input end of the second water pump (19) penetrates through the top end of the aeration box (17) and extends towards the inside of the aeration box (17), the input end of the second water pump (19) is provided with a communicating pipe (20), the top end of the communicating pipe (20) is communicated with a water inlet pipe (21), the input end of the communicating pipe (20) penetrates through one end of the aeration box (17) and extends towards the inside of the aeration box (17), one end of the aeration box (17) is provided with a purification box (22), and the output end of the water inlet pipe (21) penetrates through one end of the purification box (22) and extends towards the, and a discharge pipe (23) is communicated with the lower area of one end of the purification box (22).
2. The laboratory wastewater treatment apparatus according to claim 1, wherein: the communicating pipe (20) and the water inlet pipe (21) are respectively provided with a first valve (24) and a second valve (25) in a communicating mode.
3. The laboratory wastewater treatment apparatus according to claim 1, wherein: the one end of first filter screen (8) and second filter screen (9) all extends to the outer end of rose box (1), the one end of first filter screen (8) and second filter screen (9) all is provided with sealed pad (26), each the one end of sealed pad (26) all contacts with the one end of rose box (1), the one end lower part region of rose box (1) is provided with screwed pipe (27), screwed pipe (27) pass the lateral wall of rose box (1) and extend and internal contact, the spiral shell dress of screwed pipe (27) is connected with threaded rod (28), the other end spiral shell dress of threaded rod (28) is connected with clamping bar (29), the one end of clamping bar (29) all with each sealed pad (26) contact.
4. The laboratory wastewater treatment apparatus according to claim 1, wherein: the discharge pipe (23) is provided with a pipe cap (30), the outer side of the circumference of the discharge pipe (23) is of an external thread structure, the inner side of the circumference of the pipe cap (30) is of an internal thread structure, and the discharge pipe (23) is in threaded connection with the pipe cap (30).
5. The laboratory wastewater treatment apparatus according to claim 1, wherein: the radius of the driven wheel (2) is larger than that of the driving wheel (33).
6. The laboratory wastewater treatment apparatus according to claim 1, wherein: the bottom end of the driven wheel (2) is provided with a supporting column (31).
7. The laboratory wastewater treatment apparatus according to claim 1, wherein: a flocculating agent is placed in the medicine inlet pipe (16).
8. The laboratory wastewater treatment apparatus according to claim 1, wherein: the bottom of motor (3) is provided with bottom plate (32), the top of bottom plate (32) is connected with the bottom of support column (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020123013.9U CN211847541U (en) | 2020-01-19 | 2020-01-19 | Laboratory sewage treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020123013.9U CN211847541U (en) | 2020-01-19 | 2020-01-19 | Laboratory sewage treatment plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211847541U true CN211847541U (en) | 2020-11-03 |
Family
ID=73232316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020123013.9U Expired - Fee Related CN211847541U (en) | 2020-01-19 | 2020-01-19 | Laboratory sewage treatment plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211847541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904306A (en) * | 2022-03-31 | 2022-08-16 | 济南市市政工程设计研究院（集团）有限责任公司 | Sewage treatment device and working method |
-
2020
- 2020-01-19 CN CN202020123013.9U patent/CN211847541U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904306A (en) * | 2022-03-31 | 2022-08-16 | 济南市市政工程设计研究院（集团）有限责任公司 | Sewage treatment device and working method |
| CN114904306B (en) * | 2022-03-31 | 2024-02-13 | 济南市市政工程设计研究院（集团）有限责任公司 | Sewage treatment device and working method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |