CN212833314U - Air stripping reflux type small-sized purification tank sewage treatment equipment - Google Patents
Air stripping reflux type small-sized purification tank sewage treatment equipment Download PDFInfo
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- CN212833314U CN212833314U CN202021285196.0U CN202021285196U CN212833314U CN 212833314 U CN212833314 U CN 212833314U CN 202021285196 U CN202021285196 U CN 202021285196U CN 212833314 U CN212833314 U CN 212833314U
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- pipe
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- digestive juice
- pond
- sewage treatment
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- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 238000000746 purification Methods 0.000 title claims abstract description 31
- 238000010992 reflux Methods 0.000 title claims abstract description 28
- 239000010802 sludge Substances 0.000 claims abstract description 40
- 230000001079 digestive effect Effects 0.000 claims abstract description 36
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims abstract description 36
- 238000005273 aeration Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
- 238000004062 sedimentation Methods 0.000 claims description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 15
- 239000001301 oxygen Substances 0.000 abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 abstract description 15
- 230000035939 shock Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 11
- 239000000945 filler Substances 0.000 description 8
- 230000029087 digestion Effects 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of domestic sewage treatment and specifically relates to a small-size purification tank sewage treatment device of air stripping backward flow formula, including purifying tank casing and air pump, the purifying tank casing is inside to be equipped with in proper order by the side of intaking to the drainage side and adjust just heavy pond, anaerobism pond, good oxygen pond and two heavy ponds, adjust just heavy pond, anaerobism pond, good oxygen pond and two and loop through the overflow pipe intercommunication between heavy pond be equipped with the aeration head in the good oxygen pond be equipped with digestive juice back flow and sludge reflux pipe in the purifying tank casing, just two heavy ponds pass through digestive juice back flow and anaerobism pond intercommunication, two heavy ponds pass through the sludge reflux pipe and adjust just heavy pond intercommunication, aeration head, digestive juice back flow and sludge reflux pipe link to each other with the air pump through the hose respectively. The utility model discloses can realize the on-the-spot processing to rural family formula domestic sewage, have shock resistance reinforce, running cost low grade advantage.
Description
Technical Field
The utility model belongs to the technical field of domestic sewage treatment and specifically relates to a small-size purification tank sewage treatment device of air stripping backward flow formula.
Background
Along with the rapid development of rural economy, the discharge amount of rural domestic sewage is increased, so that the environmental conditions in rural areas are increasingly worsened, the generated domestic sewage is directly discharged, the pollution of rivers and ponds is caused, the living environment of villagers is influenced, and the physical health of farmers can be seriously threatened.
The number of people in some rural areas is small or the domestic sewage is inconvenient to collect and treat intensively due to the terrain, and the rural domestic sewage has the characteristics of large water quality change, uneven water quantity and the like, so that the impact resistance of sewage treatment equipment is greatly tested.
The purifying tank system is characterized in that a small purifying tank is arranged in a house foundation, can treat domestic sewage and discharge the domestic sewage on site, and has the advantages of small investment, low cost, no terrain limitation, easy sludge utilization, stable water outlet, high pollution removal rate and the like.
According to the relevant requirements of 'water pollutant discharge standard of rural domestic sewage treatment facility' which comes out from various places, the installation of the small purification tank becomes the inevitable trend of new rural construction, but how to match the sewage treatment requirements of different places according to local conditions is a problem to be considered, the impact resistance of the small purification tank is improved, and the operation cost is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a small-size purification groove sewage treatment device of air stripping backward flow formula can realize handling on the spot to rural family's formula domestic sewage, has strong shock resistance, running cost low grade advantage.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a small-size purification tank sewage treatment device of air stripping backward flow formula, includes purifying tank casing and air pump, the purifying tank casing is inside to be equipped with in proper order by the side of intaking to the drainage side and adjust just heavy pond, anaerobism pond, good oxygen pond and two heavy ponds, just adjust just heavy pond, anaerobism pond, good oxygen pond and two and loop through the overflow pipe intercommunication between the heavy pond be equipped with the aeration head in the good oxygen pond be equipped with digestive juice back flow and mud back flow in the purifying tank casing, just two heavy ponds pass through digestive juice back flow and anaerobism pond intercommunication, two heavy ponds pass through mud back flow and adjust just heavy pond intercommunication, aeration head, digestive juice back flow and mud back flow link to each other with the air pump through the hose respectively.
The digestive juice backflow pipe comprises a first vertical pipe and a first communicating pipe, wherein the lower end of the first vertical pipe forms a digestive juice backflow water inlet end, the upper end of the first vertical pipe forms a digestive juice backflow exhaust end, compressed air generated by the air pump enters the first vertical pipe through the first air inlet hose, and digestive juice is sucked from the digestive juice backflow water inlet end and enters the anaerobic tank through the first communicating pipe.
The sludge return pipe comprises a second vertical pipe and a second communicating pipe, wherein the lower end of the second vertical pipe forms a sludge return sludge inlet end, the upper end of the second vertical pipe forms a sludge return exhaust end, compressed air generated by the air pump enters the second vertical pipe through a second air inlet hose, and activated sludge is sucked by the sludge return sludge inlet end and enters the primary regulation sedimentation tank through the second communicating pipe.
The water inlet side of the purifying tank shell is provided with a water inlet pipe communicated with the adjusting primary sedimentation tank, and the water outlet side is provided with a water outlet pipe communicated with the secondary sedimentation tank.
And adjusting sewage in the primary sedimentation tank to enter and go up to overflow into an anaerobic tank through a first overflow pipe, water in the anaerobic tank to enter and go up to overflow into an aerobic tank through a second overflow pipe, and water in the aerobic tank to enter and go down to flow into a secondary sedimentation tank through a third overflow pipe.
The purification tank shell is buried underground, the air pump is controlled by an electric cabinet, and the air pump and the electric cabinet are arranged on the ground surface.
The purifying tank shell comprises an upper shell and a lower shell, wherein the upper shell is provided with a methane discharge pipe and a plurality of observation pipes, and the upper ends of the methane discharge pipe and the observation pipes are exposed out of the ground surface.
The utility model discloses an advantage does with positive effect:
1. the utility model discloses utilize and adjust just heavy pond and carry out quality of water volume regulation, deposit bulky pollutant simultaneously at even quality of water volume, reduce the load impact to follow-up biochemical pond, utilize anaerobism pond and good oxygen pond to carry out the pollutant processing to throw high-efficient suspended filler in anaerobism pond and good oxygen pond, have that the load is high, take up an area of for a short time, advantage that shock resistance is strong, utilize two heavy ponds at last to realize that digestive juice and mud backward flow and purified water discharge, the utility model discloses whole shock resistance that can effectively improve small-size purification groove reduces the running cost, realizes the reuse of reclaimed water, reaches resource maximize utilization.
2. The utility model discloses utilize the air pump to provide compressed air for the aeration head in the aerobic tank, need not insert the fan, when guaranteeing aerobic zone dissolved oxygen, reduce energy consumption, and the unnecessary tolerance of air pump lets in realization air stripping backward flow effect in digestive juice back flow and the sludge reflux pipe through the hose, utilize the density difference of the inside and outside liquid of back flow, make liquid obtain promoting to realize the backward flow, thereby saved the use of digestive juice backwash pump and sludge reflux pump, avoid being difficult to the problem of water pump lectotype because of small-size purification groove digestive juice, sludge reflux flow undersize.
3. The utility model discloses can match suitable play water mode according to local conditions, but the water after the purification can gravity in line river, pump promotion retrieval and utilization or subsurface infiltration, satisfies rural operation requirement.
Drawings
Figure 1 is a schematic structural diagram of the present invention,
FIG. 2 is a schematic view showing the arrangement of the cells in the casing of the purification tank of FIG. 1,
FIG. 3 is a schematic view showing the layout of piping inside the housing of the purification tank of FIG. 1,
figure 4 is a schematic view of the digester effluent return line of figure 3,
fig. 5 is a schematic view of the sludge return pipe of fig. 3.
The device comprises a lower shell 1, an upper shell 2, a water inlet pipe 3, a water outlet pipe 4, a primary settling adjusting tank 5, an anaerobic tank 6, an aerobic tank 7, a secondary settling tank 8, a biogas discharge pipe 9, a first observation pipe 10, a second observation pipe 11, a third observation pipe 12, an air pump 13, an electric cabinet 14, an anaerobic tank suspension filler 15, an aerobic tank suspension filler 16, a first overflow pipe 17, a second overflow pipe 18, a third overflow pipe 19, a digestive juice reflux pipe 20, a sludge reflux pipe 21, an aeration head 22, a first air inlet hose 23, a digestive juice reflux water inlet 24, a first communication pipe 25, a digestive juice reflux exhaust end 26, a second air inlet hose 27, a sludge reflux mud inlet end 28, a second communication pipe 29 and a sludge reflux exhaust end 30.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-5, the utility model comprises a purification tank shell and an air pump 13, as shown in fig. 2, an adjusting primary sedimentation tank 5, an anaerobic tank 6, an aerobic tank 7 and a secondary sedimentation tank 8 are sequentially arranged from the water inlet side to the water outlet side in the purification tank shell, a water inlet pipe 3 is arranged on the water inlet side of the purification tank shell and communicated with the adjusting primary sedimentation tank 5, a water outlet pipe 4 is arranged on the water outlet side and communicated with the secondary sedimentation tank 8, as shown in fig. 3, a first overflow pipe 7 is arranged between the adjusting primary sedimentation tank 5 and the anaerobic tank 6, sewage in the adjusting primary sedimentation tank 5 flows in and out through a first overflow pipe 17 and overflows into the anaerobic tank 6, a second overflow pipe 18 is arranged between the anaerobic tank 6 and the aerobic tank 7, water in the anaerobic tank 6 flows in and out through the second overflow pipe 18 and overflows into the aerobic tank 7, an aeration head 22 is arranged in the aerobic tank 7, the aeration cylinder 22 is connected with the air pump 13 through a pipeline, compressed air is released to provide dissolved oxygen needed by the aerobic tank 7 through an aeration head 22, a third overflow pipe 19 is arranged between the aerobic tank 7 and the secondary sedimentation tank 8, water in the aerobic tank 7 enters and exits through the third overflow pipe 19 and flows into the secondary sedimentation tank 8, a digestion liquid return pipe 20 and a sludge return pipe 21 are arranged in the purifying tank shell, the secondary sedimentation tank 8 is communicated with the anaerobic tank 6 through the digestion liquid return pipe 20, digestion liquid treated by the aerobic tank 7 flows back into the anaerobic tank 6 through the digestion liquid return pipe 20 in the secondary sedimentation tank 8, the secondary sedimentation tank 8 is communicated with the primary regulation sedimentation tank 5 through the sludge return pipe 21, activated sludge in the secondary sedimentation tank 8 flows back into the primary regulation sedimentation tank 5 through the sludge return pipe 21, as shown in figures 4-5, the digestion liquid return pipe 20 is connected with an air pump 13 through a first air inlet hose 23, the sludge return pipe 21 is connected with the air pump 13 through a second air inlet hose 27, the air pump 13 is controlled by an electric control box 14.
As shown in fig. 2, the purification tank shell comprises an upper shell 2 and a lower shell 1, wherein the upper shell 2 is provided with a biogas discharge pipe 9 and a plurality of observation pipes, the primary sedimentation tank 5 and the anaerobic tank 6 are adjusted to generate biogas during sewage treatment, the generated biogas is discharged through the biogas discharge pipe 9, and an operator can observe the specific conditions of each reaction unit through a first observation pipe 10, a second observation pipe 11 and a third observation pipe 12.
As shown in fig. 4, the digestive juice reflux pipe 20 comprises a first vertical pipe and a first communication pipe 25, wherein the lower end of the first vertical pipe forms a digestive juice reflux water inlet end 24, the upper end of the first vertical pipe forms a digestive juice reflux pipe air outlet end 26, compressed air generated by the air pump 13 enters the first vertical pipe through the first air inlet hose 23 to generate liquid density difference inside and outside the pipe, and digestive juice is sucked into the digestive juice reflux pipe 20 from the digestive juice reflux water inlet end 24 and enters the anaerobic tank 6 through the first communication pipe 25.
As shown in fig. 5, the sludge return pipe 21 includes a second vertical pipe and a second communicating pipe 29, wherein a sludge return inlet end 28 is formed at the lower end of the second vertical pipe, and a sludge return outlet end 30 is formed at the upper end of the second vertical pipe, compressed air generated by the air pump 13 enters the second vertical pipe through the second air inlet hose 27, so that a liquid density difference is generated inside and outside the second vertical pipe, and activated sludge is sucked into the sludge return pipe 21 from the sludge return inlet end 28 and enters the primary settling tank 5 through the second communicating pipe 29.
The anaerobic tank 6 is internally provided with anaerobic tank suspended filler 15, and the aerobic tank 7 is internally provided with aerobic tank suspended filler 16, so that the pollutant treatment capacity in the purification tank is improved, and the resistance is improved. The anaerobic tank suspended filler 15 and the aerobic tank suspended filler 16 are both known in the art and are commercially available products.
The utility model discloses a theory of operation does:
the utility model discloses mainly realize handling on the spot to rural family formula domestic sewage, purify the groove casing and bury in the underground, expose ground on marsh gas discharge pipe 9 and each observation tube, the earth's surface is all located to air pump 13 and electric cabinet 14.
The utility model discloses during the use, domestic sewage such as septic tank, kitchen oil interceptor, washing room flows in through inlet tube 3 and adjusts and just sink 5 in carrying out quality of water volume regulation, and the bulky pollutant is precipitated simultaneously to even quality of water volume, reduces the load impact to follow-up biochemical pond.
Adjust the sewage in the just heavy pond 5 and get into in proper order and carry out pollutant processing in anaerobism pond 6 and the good oxygen pond 7, to the unstable problem of coming water of family one's formula water yield quality of water, the utility model discloses throw with high-efficient suspension filler at anaerobism pond 6 and good oxygen pond 7, have the advantage that the load is high, take up an area of for a short time, shock resistance is strong. In addition, the air pump 13 provides compressed air for the aeration head 22 in the aerobic tank 7 for aeration, provides required dissolved oxygen for the aerobic tank 7, does not need to be connected with a fan, and reduces energy consumption while ensuring the dissolved oxygen in an aerobic zone.
After the water in the good oxygen pond 7 got into two heavy ponds 8, the digestive juice flows back to anaerobism pond 6 via digestive juice back flow 20, and activated sludge flows back to adjusting just heavy pond 5 in through mud back flow 21, and water is then discharged by drain pipe 4, and the utility model discloses utilize the unnecessary tolerance of air pump 13 to realize air stripping backward flow effect, the compressed air of air pump 13 output lets in corresponding backward flow in through the hose to utilize the density difference of the inside and outside liquid of back flow, make liquid obtain promoting to realize the backward flow, thereby saved the use of digestive juice backwash pump and mud backwash pump, avoided being difficult to the problem of water pump lectotype because of small-size purification groove digestive juice, mud reflux flow undersize.
The utility model discloses the water outlet end can match multiple water outlet mode according to the installation site needs, but the direct river that goes out of water gravity after the purification, the clear water after purifying passes through the pipeline and directly flows in the river promptly, perhaps the pump promotes the retrieval and utilization, the clear water after purifying passes through the pipeline promptly and flows to the shaft, it can carry out farmland treegarden irrigation etc. to go into the cistern after the pump promotes, perhaps the underground infiltration, the clear water after purifying promptly passes through the pipeline under the capillary infiltration and the infiltration effect of soil, move and further purify around, go out the direct infiltration underground soil moisture that supplyes of water.
Claims (7)
1. The utility model provides a small-size purification groove sewage treatment device of air stripping backward flow formula which characterized in that: comprises a purification tank shell and an air pump (13), wherein the interior of the purification tank shell is sequentially provided with an adjusting primary sedimentation tank (5), an anaerobic tank (6), an aerobic tank (7) and a secondary sedimentation tank (8) from a water inlet side to a water outlet side, the adjusting primary sedimentation tank (5), the anaerobic tank (6), the aerobic tank (7) and the secondary sedimentation tank (8) are communicated through an overflow pipe in sequence, an aeration head (22) is arranged in the aerobic tank (7), a digestive juice return pipe (20) and a sludge return pipe (21) are arranged in the purifying tank shell, and the secondary sedimentation tank (8) is communicated with the anaerobic tank (6) through a digestive juice return pipe (20), the secondary sedimentation tank (8) is communicated with the adjusting primary sedimentation tank (5) through a sludge return pipe (21), the aeration head (22), the digestive juice reflux pipe (20) and the sludge reflux pipe (21) are respectively connected with the air pump (13) through hoses.
2. The air stripping reflux type small-sized purification tank sewage treatment device as claimed in claim 1, wherein: the digestive juice return pipe (20) comprises a first vertical pipe and a first communicating pipe (25), wherein a digestive juice return water inlet end (24) is formed at the lower end of the first vertical pipe, a digestive juice return pipe exhaust end (26) is formed at the upper end of the first vertical pipe, compressed air generated by the air pump (13) enters the first vertical pipe through the first air inlet hose (23), and digestive juice is sucked by the digestive juice return water inlet end (24) and enters the anaerobic tank (6) through the first communicating pipe (25).
3. The air stripping reflux type small-sized purification tank sewage treatment device as claimed in claim 1, wherein: the sludge return pipe (21) comprises a second vertical pipe and a second communicating pipe (29), wherein the lower end of the second vertical pipe forms a sludge return sludge inlet end (28), the upper end of the second vertical pipe forms a sludge return exhaust end (30), compressed air generated by the air pump (13) enters the second vertical pipe through a second air inlet hose (27), and activated sludge is sucked by the sludge return sludge inlet end (28) and enters the adjusting primary sedimentation tank (5) through the second communicating pipe (29).
4. The air stripping reflux type small-sized purification tank sewage treatment device as claimed in claim 1, wherein: the water inlet side of the purifying tank shell is provided with a water inlet pipe (3) communicated with the adjusting primary sedimentation tank (5), and the water outlet side is provided with a water outlet pipe (4) communicated with the secondary sedimentation tank (8).
5. The air stripping reflux type small-sized purification tank sewage treatment device as claimed in claim 1, wherein: the sewage in the adjusting primary sedimentation tank (5) enters from the bottom to the top through a first overflow pipe (17) and overflows into an anaerobic tank (6), the water in the anaerobic tank (6) enters from the bottom to the top through a second overflow pipe (18) and overflows into an aerobic tank (7), and the water in the aerobic tank (7) enters from the top through a third overflow pipe (19) and flows into a secondary sedimentation tank (8).
6. The air stripping reflux type small-sized purification tank sewage treatment device as claimed in claim 1, wherein: the purification tank shell is buried underground, the air pump (13) is controlled by an electric cabinet (14), and the air pump (13) and the electric cabinet (14) are arranged on the ground surface.
7. The air stripping reflux type small-sized purification tank sewage treatment device as claimed in claim 6, wherein: the purifying tank shell comprises an upper shell (2) and a lower shell (1), wherein the upper shell (2) is provided with a methane discharge pipe (9) and a plurality of observation pipes, and the upper ends of the methane discharge pipe (9) and the observation pipes are exposed out of the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021285196.0U CN212833314U (en) | 2020-07-03 | 2020-07-03 | Air stripping reflux type small-sized purification tank sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021285196.0U CN212833314U (en) | 2020-07-03 | 2020-07-03 | Air stripping reflux type small-sized purification tank sewage treatment equipment |
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| Publication Number | Publication Date |
|---|---|
| CN212833314U true CN212833314U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021285196.0U Active CN212833314U (en) | 2020-07-03 | 2020-07-03 | Air stripping reflux type small-sized purification tank sewage treatment equipment |
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| CN (1) | CN212833314U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259363A (en) * | 2022-02-21 | 2022-11-01 | 上海市机电设计研究院有限公司 | A sewage treatment sedimentation tank energy-saving return device capable of removing floating sludge and its operation method |
| CN116573768A (en) * | 2023-06-08 | 2023-08-11 | 保定银虹裕瑞水务设备制造有限公司 | Small rural domestic sewage treatment and purification tank and sewage discharge method thereof |
-
2020
- 2020-07-03 CN CN202021285196.0U patent/CN212833314U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259363A (en) * | 2022-02-21 | 2022-11-01 | 上海市机电设计研究院有限公司 | A sewage treatment sedimentation tank energy-saving return device capable of removing floating sludge and its operation method |
| CN116573768A (en) * | 2023-06-08 | 2023-08-11 | 保定银虹裕瑞水务设备制造有限公司 | Small rural domestic sewage treatment and purification tank and sewage discharge method thereof |
| CN116573768B (en) * | 2023-06-08 | 2023-11-14 | 保定银虹裕瑞水务设备制造有限公司 | Small rural domestic sewage treatment and purification tank and sewage discharge method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An air stripping reflux type small purification tank sewage treatment equipment Effective date of registration: 20220513 Granted publication date: 20210330 Pledgee: Shenyang SME financing Company Limited by Guarantee Pledgor: SHENYANG EVERBRIGHT ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2022210000042 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230517 Granted publication date: 20210330 Pledgee: Shenyang SME financing Company Limited by Guarantee Pledgor: SHENYANG EVERBRIGHT ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2022210000042 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Small Purification Tank Sewage Treatment Equipment with Airlift Reflux Effective date of registration: 20230518 Granted publication date: 20210330 Pledgee: Shenyang SME financing Company Limited by Guarantee Pledgor: SHENYANG EVERBRIGHT ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2023210000107 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210330 Pledgee: Shenyang SME financing Company Limited by Guarantee Pledgor: SHENYANG EVERBRIGHT ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2023210000107 |