CN220201615U - Dissolved oxygen regulating and lowering system for biochemical pond - Google Patents
Dissolved oxygen regulating and lowering system for biochemical pond Download PDFInfo
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- CN220201615U CN220201615U CN202321788412.7U CN202321788412U CN220201615U CN 220201615 U CN220201615 U CN 220201615U CN 202321788412 U CN202321788412 U CN 202321788412U CN 220201615 U CN220201615 U CN 220201615U
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- gas
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- pipe
- dissolved oxygen
- biochemical
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000001301 oxygen Substances 0.000 title claims abstract description 76
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 76
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 128
- 239000000178 monomer Substances 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000005273 aeration Methods 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 9
- 238000005276 aerator Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 229940079593 drug Drugs 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The utility model discloses a dissolved oxygen regulating and reducing system of a biochemical pool, which comprises the following components: an oxygen supply device having an air supply port through which an oxygen-carrying gas flows out; the gas transmission main pipe is provided with a first gas inlet and a first gas outlet, and the first gas inlet is connected with the gas supply port; the first air outlet is communicated with the biochemical tank; the gas bypass component is provided with a second gas inlet and a second gas outlet, and the second gas inlet is communicated with a middle pipe section of the gas transmission main pipe, which is positioned between the first gas inlet and the first gas outlet; and the aerobic monomer device is communicated with the second air outlet. The dissolved oxygen regulating and reducing system for the biochemical pool ensures the normal operation effect of the biochemical aerobic system; avoiding energy waste.
Description
Technical Field
The utility model relates to the technical field of aerobic equipment, in particular to a dissolved oxygen regulating and lowering system of a biochemical pool.
Background
When the sewage plant is designed and constructed, the treated water quantity is considered according to the requirement of 5-10 years in long term, and the air quantity of an aeration blower matched with the biochemical aerobic system is also configured according to the requirement when the water quantity is maximum.
However, most sewage plants run for one to two years immediately before, the daily water inflow is lower than the design value, and part of the daily water inflow of the sewage plants is less than 50% of the design value, and the BOD (Biochemical Oxygen Demand, biochemical oxygen demand or biochemical oxygen consumption) value of the inflow water is generally lower than the design value, so that the oxygen demand of the biochemical oxygen demand system is far lower than the design value for the two reasons. The air quantity regulation range of the air blower of the biochemical aerobic system is limited, the air quantity is still larger than the air quantity required by the biochemical pond when the air quantity is reduced to the minimum value, so that the dissolved oxygen in the biochemical pond is higher than the conventional value, the microorganism propagation is limited, the treatment effect of the biochemical pond is poor, indexes such as the effluent TN (Total Nitrogen) are out of standard, the normal operation of the biochemical aerobic system is influenced, and the energy waste is easily caused.
Disclosure of Invention
In view of the above, the utility model provides a dissolved oxygen regulating and lowering system for a biochemical pool, which ensures the normal operation of an aerobic system of the biochemical pool and avoids energy waste.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a biochemical pond dissolved oxygen conditioning system comprising:
an oxygen supply device having an air supply port through which an oxygen-carrying gas flows out;
the gas transmission main pipe is provided with a first gas inlet and a first gas outlet, and the first gas inlet is connected with the gas supply port;
the first air outlet is communicated with the biochemical tank;
the gas bypass component is provided with a second gas inlet and a second gas outlet, and the second gas inlet is communicated with a middle pipe section of the gas transmission main pipe, which is positioned between the first gas inlet and the first gas outlet;
and the aerobic monomer device is communicated with the second air outlet.
Optionally, in the biochemical pool dissolved oxygen reducing system, the gas bypass component comprises a bypass pipeline control valve, and the bypass pipeline control valve is used for controlling the amount of gas flowing into the gas bypass component from the second gas inlet.
Optionally, in the dissolved oxygen reducing system of the biochemical pool, the gas bypass component further comprises a bypass main pipe and a bypass branch pipe;
the bypass branch pipe is communicated with the bypass main pipe; the end, far away from the bypass branch pipe, of the bypass main pipe is the second air inlet, and the end, far away from the bypass main pipe, of the bypass branch pipe is the second air outlet;
the bypass pipeline control valve is arranged on the bypass main pipe.
Optionally, in the biochemical pool dissolved oxygen reducing system, the gas bypass component further comprises a perforated aerator pipe;
the perforated aeration pipe is arranged in the aerobic monomer device and is communicated with the second air outlet.
Optionally, in the biochemical pool dissolved oxygen regulating and reducing system, the perforated aeration pipe is arranged at the bottom of the pool body of the aerobic monomer device;
the air outlet of the perforated aeration pipe is vertically upwards.
Optionally, in the biochemical pool dissolved oxygen reducing system, the gas bypass component further comprises a blow-down pipe;
the blow-down pipe is communicated with the bypass main pipe, the blow-down pipe is provided with a blow-down valve capable of controlling the on-off of the blow-down pipe and the external environment, and redundant gas supplied by the oxygen supply device can be discharged into the external environment through opening the blow-down valve and the blow-down pipe.
Optionally, in the biochemical pool dissolved oxygen regulating and reducing system, the number of the bypass branch pipes is at least two and corresponds to the aerobic monomer devices one by one;
the bypass branch pipe is provided with a regulating valve, and the regulating valve can at least control the on-off of the bypass branch pipe.
Optionally, in the dissolved oxygen regulating and reducing system of the biochemical pool, A is less than or equal to 1/4B;
the second air inlet is provided with a first air inlet and a second air inlet, wherein the second air inlet is provided with a flow cross section A and a flow cross section B, respectively.
Optionally, in the biochemical pool dissolved oxygen reducing system, an opening position of the middle pipe section is communicated with the second air inlet;
the periphery of the opening position is provided with an operation space for an operator to operate.
Optionally, in the biochemical tank dissolved oxygen regulating system, the aerobic monomer device comprises at least one of an accident tank, a medicine dissolving tank and other aerobic monomers.
According to the technical scheme, the dissolved oxygen regulating and reducing system for the biochemical pool, provided by the utility model, is characterized in that the oxygen carrying gas is conveyed into the gas transmission main pipe through the oxygen supply device, and can be shunted to the aerobic monomer device through the gas bypass component on the basis of being conveyed to the aerobic zone of the biochemical pool through the gas transmission main pipe. That is, the gas supplied from the gas supply port of the oxygen supply device is branched. On the basis that the gas provided by the gas supply port of the oxygen supply device is certain (oxygen is certain), the gas amount provided for the biochemical tank is effectively reduced, the problems that the dissolved oxygen in the biochemical tank is higher than a conventional value due to the fact that the provided gas amount is larger than the gas requirement of the biochemical tank, so that microorganism propagation is limited, the treatment effect of the biochemical tank is poor, indexes such as effluent TN are out of standard are avoided, and the normal operation effect of a biochemical aerobic system is ensured; and the redundant gas is conveyed to the aerobic monomer device, so that the oxygen supply of the aerobic monomer device is satisfied, and the energy waste is avoided.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system for regulating and lowering dissolved oxygen in a biochemical pool according to an embodiment of the present utility model.
Detailed Description
The utility model discloses a dissolved oxygen regulating and reducing system of a biochemical pool, which is used for ensuring the normal operation of a biochemical aerobic system and avoiding energy waste.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in FIG. 1, the embodiment of the utility model provides a dissolved oxygen reducing system of a biochemical pool, which comprises an oxygen supply device 1, a gas transmission main pipe 2, the biochemical pool 4, a gas bypass component 3 and an aerobic monomer device. The oxygen supply device 1 has an air supply port through which oxygen-carrying gas flows out; the gas transmission main pipe 2 is provided with a first gas inlet and a first gas outlet, and the first gas inlet is connected with the gas supply port; the first air outlet is communicated with the biochemical tank 4; the gas bypass component 3 is provided with a second gas inlet and a second gas outlet, and the second gas inlet is communicated with a middle pipe section of the gas transmission main pipe 2 positioned between the first gas inlet and the first gas outlet; the aerobic monomer device is communicated with the second air outlet.
According to the dissolved oxygen regulating and reducing system for the biochemical pool, provided by the embodiment of the utility model, the oxygen carrying gas is conveyed into the gas transmission main pipe 2 through the oxygen supply device 1, and can be shunted to an aerobic monomer device through the gas bypass component 3 on the basis of being conveyed to the aerobic zone of the biochemical pool 4 through the gas transmission main pipe 2. That is, the gas supplied from the gas supply port of the oxygen supply device 1 is branched. On the basis of certain gas (certain oxygen) supplied by the gas supply port of the oxygen supply device 1, the amount of the gas supplied to the biochemical tank 4 is effectively reduced, and the problems that the dissolved oxygen in the biochemical tank 4 is higher than a conventional value due to the fact that the supplied gas amount is larger than the gas demand of the biochemical tank 4, so that the microorganism propagation is limited, the treatment effect of the biochemical tank 4 is poor, the indexes such as effluent TN are out of standard are avoided, and the normal operation effect of a biochemical aerobic system is ensured; and the redundant gas is conveyed to the aerobic monomer device, so that the oxygen supply of the aerobic monomer device is satisfied, and the energy waste is avoided.
It is understood that the biochemical aerobic system comprises an oxygen supply device 1, a gas transmission main pipe 2 and a biochemical tank 4 in the dissolved oxygen regulating and lowering system of the biochemical tank.
Wherein the biochemical tank 4 is provided with an aerobic zone. The oxygen supply device 1 is preferably a blower. Of course, other devices may be selected as the oxygen supply device 1, and the oxygen supply needs only need to be satisfied.
Further, the gas bypass member 3 includes a bypass line control valve 31, and the bypass line control valve 31 is used to control the amount of gas flowing into the gas bypass member 3 from the second gas inlet. The gas quantity conveyed to the aerobic monomer device by the gas conveying main pipe 2 is controlled by adjusting the bypass pipeline control valve 31, so that the gas quantity conveyed to the biochemical tank 4 by the gas conveying main pipe 2 is adjusted, and the gas demand of the biochemical tank 4 is met. The opening of the bypass control valve 31 may be adjusted according to the dissolved oxygen value in the biochemical tank.
To enhance automation control, the bypass line control valve 31 is preferably an electrically-regulated butterfly valve. Further, the bypass pipeline control valve 31 is a spheroidal graphite cast iron ball valve, and is installed through a flange, so that the bypass pipeline control valve 31 is convenient to detach. Of course, other regulating valves capable of controlling the flow rate may be selected.
In this embodiment, the gas bypass component 3 further comprises a bypass manifold and a bypass branch pipe; the bypass branch pipe is communicated with the bypass main pipe; the end of the bypass main pipe, which is far away from the bypass branch pipe, is a second air inlet, and the end of the bypass branch pipe, which is far away from the bypass main pipe, is a second air outlet; the bypass line control valve 31 is provided on the bypass manifold.
Further, the gas bypass part 3 further includes a perforated aerator pipe 32; perforated aeration tubes 32 are disposed within the aerobic monomer apparatus and are in communication with the second air outlet. Through setting up perforation aeration pipe 32, can improve the pressure of gas to guarantee that gas distributes evenly in the gas monomer device that needs, and then make gas can realize the gas stirring operation in the aerobic monomer device, on satisfying the basis of oxygen suppliment, improved the stirring effect.
In the dissolved oxygen regulating and reducing system of the biochemical pool provided by the embodiment of the utility model, a perforated aerator pipe 32 is arranged at the bottom of the pool body of the aerobic monomer device; the air outlet of the perforated aerator pipe 32 is vertically upward. That is, the perforated aeration pipe 32 has a perforated position vertically upward, and the gas is diffused in the water in a turbulent state. Wherein the end of the perforated aerator pipe 32 is plugged with a blind plate.
Further, the gas bypass member 3 further includes a blow-down pipe; the blow-down pipe is communicated with the bypass main pipe, the blow-down pipe is provided with a blow-down valve 34 which can control the on-off of the blow-down pipe and the external environment, and redundant gas supplied by the oxygen supply device 1 can be discharged into the external environment through opening the blow-down valve 34 and the blow-down pipe. That is, by opening and closing the purge valve 34, the surplus gas supplied from the oxygen supply device 1 can be discharged. Wherein, after the gas supplied by the oxygen supply device 1 meets the gas demand of the biochemical tank 4 and the gas demand of the aerobic monomer device, a part of gas is still increased, and the part of gas is redundant gas. Wherein, the blow-down pipe can also be used as a bypass branch pipe.
In this embodiment, the number of bypass branches may be one, and the number of blow-down pipes may be one, i.e., the bypass header is branched off by the bypass branches and the blow-down pipes. It is also possible to provide only one bypass branch instead of a blow-down pipe.
In order to improve the utilization rate, the energy distribution is further optimized, and the number of bypass branch pipes is at least two and corresponds to that of the aerobic monomer devices one by one; the bypass branch pipe is provided with a regulating valve 33, and the regulating valve 33 can at least control the on-off of the bypass branch pipe. Wherein, when oxygen is needed to be supplied to a certain aerobic monomer device, a regulating valve 33 on a bypass branch pipe corresponding to the oxygen is opened. By the arrangement, the flexible control degree of the air supply of the plurality of aerobic monomer devices is improved.
The regulating valve 33 is preferably a manual ball valve. Of course, other ball valves or butterfly valves that are convenient to operate may be used without specific limitation herein.
Further, in this embodiment, the regulating valve 33 may further control the flow rate of the bypass branch pipe.
In order not to influence the normal operation of the biochemical tank 4, A is less than or equal to 1/4B; wherein, the cross-sectional area A of the second air inlet and the cross-sectional area B of the main air transmission pipe 2. That is, the flow cross-sectional area a of the second inlet is the opening size of the opening location 23 of the intermediate pipe section. The flow cross-sectional area a of the second air inlet is determined according to the air supply amount of the oxygen supply device 1 and the air demand amount of the biochemical tank 4, and generally does not exceed 1/4 of the flow cross-sectional area B of the main air transmission pipe 2.
Of course, A > 1/4B may be used, and is not particularly limited herein.
For convenience of processing, the open hole position 23 of the middle pipe section is communicated with the second air inlet; the periphery of the opening position 23 has an operation space for an operator to operate. In order to facilitate the pipeline laying, the opening position 23 also needs to be located at a relatively short distance from the aerobic monomer unit.
In order to improve the service life and reduce the leakage of the gas at the open hole position 23, the materials of the gas transmission main pipe 2 and the gas bypass component 3 are preferably consistent so as to facilitate the operation of welding and the like. In addition, the gas flow rate at the open hole position 23 is high, and stainless steel pipes are preferable for the gas line main pipe 2 and the gas bypass main pipe in order to prevent oxidation of the pipe. Other bypass branch pipes can be carbon steel pipes or galvanized pipes.
Still further, the aerobic monomer device includes at least one of an accident cell 5, a drug dissolving cell 6, and other aerobic monomers 7. The bypass component 3 supplies air to the accident pool 5, the medicine dissolving pool 6 and other aerobic monomers 7, can be distributed into the medicine dissolving pool 6 for air stirring, mixes medicine liquid, and can be distributed into the accident pool 5 for air stirring, so that anaerobic odor generation of sewage in the pool and sludge deposition in the pool are prevented. The specific type of the other aerobic monomer 7 is not limited.
Specifically, in the embodiment in which the design and construction process water amount is 13000m3/d, the biochemical tank 4 is provided with 2 air suspension blowers (oxygen supply device 1) with the following parameters: q=40 Nm 3 /min，N＝56kW，H＝8.0mH 2 O,1 was prepared with 1.
In actual operation, the daily average water inflow is only 4000m 3 When a blower is started and the air output of the blower is regulated to the minimum, the dissolved oxygen in the aerobic zone of the biochemical pool 4 is still 8mg/l. By applying the dissolved oxygen regulating and reducing system for the biochemical pool,the dissolved oxygen in the aerobic zone can be reduced to 3mg/l, redundant gas is respectively distributed into the accident pool 5 and the medicine dissolving pool 6 through two bypass branches, the accident pool 5 is oxygenated through the perforated aeration pipe 32, anaerobic fermentation of sewage in the pool is prevented, sludge deposition is prevented, and the perforated aeration pipe 32 is distributed in the medicine dissolving pool 6 to mix medicine liquid.
As shown in fig. 1, the biochemical tank 4 has a plurality of aerobic zones (e.g., a first aerobic zone 41, a second aerobic zone 42, a third aerobic zone 43, and a fourth aerobic zone 44), and the number of the first air outlets is plural and is set corresponding to the plural aerobic zones.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A biochemical pool dissolved oxygen conditioning system, comprising:
an oxygen supply device (1), wherein the oxygen supply device (1) is provided with an air supply port for flowing out oxygen-carrying gas;
the gas transmission main pipe (2) is provided with a first gas inlet and a first gas outlet, and the first gas inlet is connected with the gas supply port;
the first air outlet is communicated with the biochemical tank (4);
the gas bypass component (3) is provided with a second gas inlet and a second gas outlet, and the second gas inlet is communicated with a middle pipe section of the gas transmission main pipe (2) between the first gas inlet and the first gas outlet;
and the aerobic monomer device is communicated with the second air outlet.
2. The biochemical pool dissolved oxygen reducing system as defined in claim 1, wherein the gas bypass member (3) includes a bypass line control valve (31), the bypass line control valve (31) being for controlling an amount of gas flowing into the gas bypass member (3) from the second gas inlet.
3. The biochemical pool dissolved oxygen reducing system according to claim 2, wherein the gas bypass component (3) further comprises a bypass main pipe and a bypass branch pipe;
the bypass branch pipe is communicated with the bypass main pipe; the end, far away from the bypass branch pipe, of the bypass main pipe is the second air inlet, and the end, far away from the bypass main pipe, of the bypass branch pipe is the second air outlet;
the bypass line control valve (31) is provided on the bypass manifold.
4. A biochemical pool dissolved oxygen reducing system as claimed in claim 3, wherein the gas bypass member (3) further comprises a perforated aerator pipe (32);
the perforated aeration pipe (32) is arranged in the aerobic monomer device and is communicated with the second air outlet.
5. The biochemical tank dissolved oxygen reducing system as set forth in claim 4, wherein the perforated aeration pipe (32) is provided at the bottom of the tank body of the aerobic monomer device;
the air outlet of the perforated aeration pipe (32) is vertically upwards.
6. A biochemical pool dissolved oxygen reduction system according to claim 3, characterized in that the gas bypass means (3) further comprises a blow down pipe;
the air vent pipe is communicated with the bypass main pipe, the air vent pipe is provided with an air vent valve (34) capable of controlling the on-off of the air vent pipe and the external environment, and redundant gas supplied by the oxygen supply device (1) can be discharged into the external environment through opening the air vent valve (34) and the air vent pipe.
7. The biochemical pool dissolved oxygen reducing system as set forth in any one of claims 3 to 6, wherein the number of bypass branches is at least two and corresponds to one of the aerobic monomer units;
the bypass branch pipe is provided with a regulating valve (33), and the regulating valve (33) can at least control the on-off of the bypass branch pipe.
8. The biochemical pool dissolved oxygen reduction system of claim 1, wherein A is less than or equal to 1/4B;
wherein the second air inlet has a flow cross section area A and the main air transmission pipe (2) has a flow cross section area B.
9. The biochemical pool dissolved oxygen reducing system as set forth in claim 1, wherein an opening position (23) of the intermediate pipe section is communicated with the second air inlet;
the periphery of the hole opening position (23) is provided with an operation space for an operator to operate.
10. The biochemical tank dissolved oxygen reduction system according to claim 1, wherein the aerobic monomer device comprises at least one of an accident tank (5), a drug dissolving tank (6) and other aerobic monomers (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321788412.7U CN220201615U (en) | 2023-07-07 | 2023-07-07 | Dissolved oxygen regulating and lowering system for biochemical pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321788412.7U CN220201615U (en) | 2023-07-07 | 2023-07-07 | Dissolved oxygen regulating and lowering system for biochemical pond |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220201615U true CN220201615U (en) | 2023-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321788412.7U Active CN220201615U (en) | 2023-07-07 | 2023-07-07 | Dissolved oxygen regulating and lowering system for biochemical pond |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220201615U (en) |
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2023
- 2023-07-07 CN CN202321788412.7U patent/CN220201615U/en active Active
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