CN217025688U - Built-in improvement AO integral type effluent treatment plant who washes sedimentation tank automatically - Google Patents
Built-in improvement AO integral type effluent treatment plant who washes sedimentation tank automatically Download PDFInfo
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- CN217025688U CN217025688U CN202220668499.3U CN202220668499U CN217025688U CN 217025688 U CN217025688 U CN 217025688U CN 202220668499 U CN202220668499 U CN 202220668499U CN 217025688 U CN217025688 U CN 217025688U
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 57
- 230000006872 improvement Effects 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000010802 sludge Substances 0.000 claims abstract description 31
- 238000005273 aeration Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000010992 reflux Methods 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 238000011010 flushing procedure Methods 0.000 claims description 39
- 238000004065 wastewater treatment Methods 0.000 claims description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000033116 oxidation-reduction process Effects 0.000 description 6
- 206010021143 Hypoxia Diseases 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The application discloses built-in automatic improvement AO integral type effluent treatment plant who washes sedimentation tank. The device comprises an anoxic tank, an aerobic tank and a sedimentation tank arranged between the anoxic tank and the aerobic tank; the anoxic tank is provided with a water inlet which is connected with a water source through a pipeline, and the bottom of the anoxic tank is provided with a hole which is connected with the aerobic tank through a pipeline; the aerobic tank is internally provided with an air stripping device, a mixed liquid reflux air stripping device and at least one baffle wall, the air stripping device is used for pumping and discharging the treated water to the sedimentation tank, the mixed liquid reflux air stripping device extends into the anoxic tank to reflux part of water in the aerobic tank to the anoxic tank, the baffle wall divides the aerobic tank into more than 2 division areas, and the division areas are respectively provided with an aeration system; the sedimentation tank is internally provided with a washing component and a water outlet, the water outlet part of the washing component faces to the sludge return port at the bottom of the sedimentation tank, the washing component is used for washing the sludge accumulated at the sludge return port, and the water outlet is used for discharging the treated water.
Description
Technical Field
The application relates to the field of wastewater treatment, in particular to an improved AO integrated wastewater treatment device with a built-in automatic flushing sedimentation tank.
Background
Along with the increasing of water eutrophication and water shortage problems, the discharge standard of ammonia nitrogen in the industries of steel, coal chemical industry and the like is further improved, the requirement on total nitrogen discharge is also provided, the discharge standard of ammonia nitrogen is generally required to be 5mg/L, and the discharge standard of total nitrogen is required to be 15 mg/L. In addition, the structural design of the sedimentation tank of the conventional treatment device is unreasonable, so that sludge can be accumulated at the bottom of the sedimentation tank and needs to be manually cleaned after being completely drained regularly. Increasing the cost of post-maintenance.
Therefore, a simple, easily controllable, low-running-cost treatment apparatus is urgently required.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application provides an improved AO integrated wastewater biochemical treatment device with an automatic flushing sedimentation tank built therein to solve the above problems.
In order to achieve the purpose, the following technical scheme is adopted in the application:
the utility model provides an improvement AO integral type effluent treatment plant of built-in automatic flushing sedimentation tank which characterized in that contains:
an anoxic tank, an aerobic tank and a sedimentation tank arranged between the anoxic tank and the aerobic tank;
the anoxic tank is provided with a water inlet which is connected with inflow water to be treated through a pipeline, the bottom of the anoxic tank is provided with a hole, and the hole is connected to the aerobic tank through a pipeline;
the aerobic tank is internally provided with an air stripping device, a mixed liquid reflux air stripping device and at least one baffle wall, the air stripping device is used for pumping and discharging water treated in the aerobic tank to the sedimentation tank, the mixed liquid reflux air stripping device extends into the anoxic tank so as to reflux part of water in the aerobic tank to the anoxic tank, the baffle wall divides the aerobic tank into more than 2 division areas, and the division areas are respectively provided with the aeration systems;
a washing component and a water outlet are arranged in the sedimentation tank,
the water outlet of the flushing component at least partially faces to the sludge return port at the bottom of the sedimentation tank, the flushing component is used for flushing sludge accumulated at the sludge return port, and the water outlet is used for discharging treated water. Set up the mud through such design in the sedimentation tank bottom and wash the part, this mud washes part connection control module, realizes the mud of regular automatic washing bottom based on control module's control and prevents that mud from plugging up the mud backward flow mouth, intake and match aeration system through the baffling at good oxygen pond and greatly reduce later stage running cost.
In one embodiment, the aeration systems are disposed at the middle and lower parts of the divided regions and are respectively connected to the air pipes.
In one embodiment, the aeration system is configured such that the effluent rate is greater on the side closer to the settling tank than on the side farther from the settling tank.
In an embodiment, the aeration system comprises an aeration pipe, wherein the aeration pipe is arranged to be parallel or approximately parallel with the bottom of the aerobic tank.
In one embodiment, the length of the aeration tube in each partition of the wastewater treatment plant is different.
In one embodiment, more than 2 baffle walls are arranged in the aerobic tank, and two adjacent baffle walls are arranged in a staggered manner, one side end of each baffle wall is connected with the side wall of the aerobic tank, a gap is arranged between the other side of each baffle wall and the side wall of the aerobic tank, and water is baffled into the aerobic tank through the baffle parts so as to mix the concentration of the water entering the aerobic tank.
In one embodiment, the number of baffles is between 2 and 10.
In one embodiment, the wastewater treatment apparatus further comprises a plurality of effluent weirs, and the effluent weirs are arranged in the sedimentation tank in a splicing manner. The level is ensured by the design.
In one embodiment, the flushing component comprises a flushing pipe which is fixed in the sedimentation tank through a connecting piece, and a water outlet of the flushing pipe at least partially faces the sludge return opening.
In one embodiment, the flushing pipe is connected with an electric valve, the electric valve is electrically connected with the control module, the electric valve is controlled to act based on instructions, and the flushing pipe responds to the action of the electric valve to discharge water so as to flush the sludge return port. The control module is provided with a timer, so that an electric valve (also called an automatic flushing valve) is triggered after a preset time (such as 1Hr, 2Hr, 12Hr, 24Hr, 36Hr, 48Hr and the like) so as to flush the sludge return opening through the flushing pipe, and the sludge return opening is prevented from being blocked by settled sludge.
Advantageous effects
Compared with the prior art, the embodiment of the application has the following advantages:
the application provides its design that adopts the integral type of built-in improvement AO integral type waste water (sewage) processing apparatus who washes the sedimentation tank automatically, simplifies the structure of device, washes the part through setting up mud in the sedimentation tank bottom, and this mud washes part connection control module, realizes the mud of periodic automatic washing bottom based on control module's control and prevents that mud from plugging up the mud backward flow mouth. Greatly reducing the later operation and maintenance cost.
The effluent weir of the sedimentation tank of the treatment device adopts a modular design, and the design ensures that the effluent weir is horizontally arranged on the surface of the sedimentation tank, so that the effluent is uniform.
This processing apparatus is through improving the interior structure of good oxygen pond, and the mode of intaking of baffling is adopted in the intaking, according to pollutant concentration, the difference provide oxygen and the anterior segment provides a large amount of oxygen promptly, and the rear end only needs a small amount of oxygen to reduce aeration systems's power consumption.
Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.
FIG. 1 is a process flow diagram of a wastewater treatment plant according to an embodiment of the present application;
FIG. 2 is a schematic view of a wastewater treatment plant according to an embodiment of the present application;
FIG. 3 is a schematic top view of the wastewater treatment apparatus shown in FIG. 2.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The application provides an improvement AO integral type effluent treatment plant of built-in automatic washing sedimentation tank. This integral type effluent treatment plant contains: an anoxic tank, an aerobic tank and a sedimentation tank arranged between the anoxic tank and the aerobic tank; holes are formed in the bottom of the anoxic tank, the holes are connected to the aerobic tank through pipelines, and water treated by the anoxic tank overflows to the aerobic tank through the pipelines for treatment; the aerobic tank is provided with an air stripping device which pumps the treated water to the sedimentation tank through a water outlet based on instructions, and the anoxic tank is connected with the mixed liquid reflux device and is used for mixing part of water in the aerobic tank with the raw water flowing into the reflux device and then refluxing the mixed liquid to the anoxic tank; the bottom of the sedimentation tank is provided with a flushing component and a sludge return port, the water outlet of the flushing component at least partially faces the sludge return port, the sludge return port is used for returning sludge to the anoxic tank, and the water outlet is used for discharging treated water. AO is an abbreviation for Anaerobic Oxic, and the AO method is also called Anaerobic-aerobic method.
When the wastewater treatment device operates, the liquid level of the anoxic tank is higher than that of the aerobic tank, and water treated by the anoxic tank overflows to the aerobic tank and reaches a first liquid level preset by requirements. The flushing part is connected with a water source (fire water, reclaimed water and the like can be used, raw water is not recommended, and the quality of outlet water can be influenced). The wastewater treatment device is controlled in an automatic mode, the pH meter of the aerobic pool is linked with the liquid caustic soda pump, the pH value of the aerobic pool is ensured to be 7-8, the dissolved oxygen meter of the aerobic pool is linked with the variable frequency fan to realize automatic control, the dissolved oxygen value at the front end of the aerobic pool is ensured to be 3-5, the dissolved oxygen value at the tail end of the aerobic pool is ensured to be 1-3, and the automatic control of the dissolved oxygen gradually decreased is realized.
The improved AO integrated wastewater treatment device with built-in automatic flushing sedimentation tank (referred to as wastewater treatment device for short) proposed in the present application will be described with reference to the accompanying drawings.
FIG. 2 is a schematic view showing the structure of a wastewater treatment apparatus according to an embodiment of the present invention. FIG. 3 is a schematic top view of the wastewater treatment apparatus shown in FIG. 2.
The wastewater treatment apparatus comprises:
a water inlet 1, a water outlet 2, an air pipe 3, a residual sludge discharge pipe 4, a mixed liquid reflux stripping pump 5, an anoxic pond thermometer 6, an anoxic pond pH meter 7, an anoxic pond dissolved oxygen meter 8, an anoxic pond oxidation-reduction potentiometer 9, an aerobic pond thermometer 10, an aerobic pond pH meter 11, an aerobic pond dissolved oxygen meter 12, an aerobic pond oxidation-reduction potentiometer 13, a water inlet flow meter 14, an air flow meter 15, a water outlet weir 16, an anoxic pond metering weir 17, an anoxic pond metering scale 18, an aeration pipe 19, a reaction and air release pond water inlet stripping pump 20, a reaction and air release partition plate 21, a sludge reflux port 22, an anoxic pond 23, an aerobic pond 24, a reaction and air release area 25, a sedimentation pond 26, a metering weir 27, a metering scale 28, a stirrer 29, an anoxic/aerobic pond 30, an automatic flushing valve 31, a flushing pipeline 32, a baffle wall 33, a liquid alkali pump 34, a blower 35, a water alkali pump, An air valve 36.
When the device is operated, raw water (waste water) is pumped into an anoxic tank 23 from a water inlet 1 through a water pump, when the pumped water reaches a preset height (specifically set according to application occasions), a stirrer 29 of the anoxic tank is started to stir, the water treated by the anoxic tank 23 overflows to an aerobic tank 24 through an anoxic/aerobic tank communicating pipe 30 arranged at the bottom of the anoxic tank, the water treated by the anoxic tank 23 flows in the aerobic tank 23 in a bending way through a baffle wall 33, when the water reaches the preset height, an aeration system 19 is started based on a control system/control module, when the water treated by the aerobic tank 23 reaches a working liquid level, a short-cut nitrification liquid air lift pump 5 from the aerobic tank to the anoxic tank is started, so that part of the water subjected to aeration treatment flows back to the anoxic tank, an air lift pump 20 from the aerobic tank to a sedimentation tank 26 is started, part of the water flows into the sedimentation tank 26 to precipitate, and the precipitated sludge flows back to the anoxic tank of the device through a sludge return port, the circulation is carried out until the water in the aerobic tank reaches the standard (reaches the standard of discharge), and then the water is discharged from a water outlet. During flushing, the automatic flushing valve 31 is actuated, and flushing water flows into the flushing pipe 32 and flows out of the flushing sludge return port 22 from the water outlet thereof to flush precipitated sludge and prevent clogging. The automatic flush valve 31 is electrically connected to the control module.
In this embodiment, the anoxic tank 23 is further provided with a water inlet 1, a water inlet flow meter 14 provided with the water inlet, an air pipe 3, a residual sludge discharge pipe 4, an anoxic tank thermometer 6, an anoxic tank pH meter 7, an anoxic tank dissolved oxygen meter 8, an anoxic tank oxidation-reduction potentiometer 9, and an aerobic tank thermometer 10. In this embodiment, the aerobic tank 24 is further provided with an aerobic tank pH meter 11, an aerobic tank dissolved oxygen meter 12, an aerobic tank oxidation-reduction potential meter 13, an air flow meter 15, a water outlet weir 16, an anoxic tank metering weir 17, and an anoxic tank metering scale 18. The weir 16 accurately reflects the amount of water entering the settling tank by means of a metering scale. Both the first and second air lift pumps are aerodynamic lift water requiring air pipes 3. The wastewater treatment device is equipment integrating anoxia/aerobic, sedimentation, sludge backflow and mixed liquid backflow.
Due to the design, the device is simple in structure, and the occupied area of the device is reduced. It has the functions of sludge-water separation, sludge reflux and mixed liquid reflux. The anoxic tank, the sedimentation tank and the aerobic tank are mutually isolated and flow according to the laid pipeline. Total nitrogen is removed in the anoxic tank, and the aerobic tank is used for converting ammonia nitrogen into nitrite nitrogen by using nitrosobacteria. A plurality of aeration systems of the aerobic tank respectively adopt perforation aeration, and the aeration systems are provided with air blowers 35 which are connected with air valves 36 through pipelines. Preferably, an air flow meter 15 is disposed on the pipe. The mud backward flow and mixed liquid backward flow, the mud of sedimentation tank gets into the oxygen deficiency pond through the automatic flow of effect of gravity and realizes the mud backward flow, and the water that (biochemical) got into good oxygen pond according to gravity flow behind the oxygen deficiency pond processing, in this embodiment, sedimentation system (sedimentation tank)'s liquid level is the highest, and secondly is the oxygen deficiency pond, and good oxygen pond's liquid level is the lowest. Therefore, the operation energy consumption of the device is reduced, and the economic benefit is improved.
The sedimentation system in the integrated wastewater treatment device is also called a sedimentation tank, and water treated by the aerobic tank (namely water discharged from the aerobic tank) is lifted to the sedimentation system through the second air stripping pump. Preferably, in order to prevent air entrainment in the effluent from affecting the precipitation effect, an air release tank, such as a partition plate, is arranged in front of the precipitation tank, and the water lifted by the air lift pump releases air bubbles through the air release tank (multi-stage water drop), so that the precipitation effect is further improved. In one embodiment, in order to accurately measure the return flow of the sludge, a triangular weir or a rectangular weir is arranged at the front section of the partition plate, so that the water amount entering the sedimentation tank is accurately reflected through a measuring scale.
The wastewater treatment device also comprises a control system (also called a control module), and the control system controls the operation of the device based on instructions or preset programs.
Specifically, the anoxic tank is provided with a detector (such as an anoxic tank thermometer 6, an anoxic tank pH meter 7, an anoxic tank dissolved oxygen instrument 8 and an anoxic tank oxidation-reduction potentiometer 9); the detection meters (such as an aerobic tank thermometer 10, an aerobic tank pH meter 11, an aerobic tank dissolved oxygen meter 12 and an aerobic tank oxidation-reduction potentiometer 13) arranged in the aerobic tank, a water inlet flow meter 14, an air flow meter 15 and the like are respectively connected to the control module, and when the wastewater treatment device operates, the control module controls the wastewater treatment device to operate based on the information fed back by the detection meters of the anoxic tank, the detection meters arranged in the aerobic tank, the water inlet flow meter 14 and the air flow meter 15. The information control system detected by the dissolved oxygen meter adjusts the oxygen content in the water to a preset range (preferably, the dissolved oxygen is maintained at 2.1-3.9 or 4 mg/L); the pH meter of the aerobic tank is interlocked with the alkali liquor feeding pump, and the alkali liquor feeding pump is controlled by an information control system based on the detection of the pH meter, so that the pH value of the aerobic tank is maintained in a preset interval (for example, the pH value is between 7.6 and 8.5) during the operation period.
The above-mentioned embodiments are only for illustrating the technical idea and features of the present application, and are intended to enable one skilled in the art to understand the content of the present application and implement the same, and not to limit the protection scope of the present application. All modifications made according to the spirit of the main technical scheme of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An improved AO integrated wastewater treatment device with a built-in automatic flushing sedimentation tank is characterized by comprising:
an anoxic tank, an aerobic tank and a sedimentation tank arranged between the anoxic tank and the aerobic tank;
the anoxic tank is provided with a water inlet which is connected with inflow water to be treated through a pipeline, and the bottom of the anoxic tank is provided with a hole which is connected to the aerobic tank through a pipeline;
the aerobic tank is internally provided with an air stripping device, a mixed liquid reflux air stripping device and at least one baffle wall, the air stripping device is used for pumping and discharging water treated in the aerobic tank to the sedimentation tank, the mixed liquid reflux air stripping device extends into the anoxic tank so as to reflux part of water in the aerobic tank to the anoxic tank, the baffle wall divides the aerobic tank into more than 2 division areas, and the division areas are respectively provided with an aeration system;
a washing component and a water outlet are arranged in the sedimentation tank,
the water outlet of the flushing component at least partially faces to the sludge return port at the bottom of the sedimentation tank, the flushing component is used for flushing sludge accumulated at the sludge return port, and the water outlet is used for discharging treated water.
2. The improved AO all-in-one wastewater treatment apparatus with built-in auto-flushing sedimentation tank of claim 1, wherein the aeration system is disposed at a middle lower portion of the divided zone and is connected to the air pipes, respectively.
3. The improved AO integrated wastewater treatment apparatus with built-in automatic flushing sedimentation tank of claim 2, wherein,
the air output of the aeration system is configured to be larger near the sedimentation tank side than far away from the sedimentation tank side.
4. The improved AO integrated wastewater treatment apparatus with built-in automatic washing sedimentation tank of claim 2,
the aeration system comprises an aeration pipe which is configured to be parallel or approximately parallel with the bottom of the aerobic tank.
5. The improved AO all-in-one wastewater treatment plant of claim 4, wherein the length of the aeration tube in each partition is different.
6. The improved AO integrated wastewater treatment apparatus with built-in automatic washing sedimentation tank as claimed in claim 1,
dispose the baffling wall more than 2 in the good oxygen pond, and two adjacent baffling walls staggered arrangement, a side with the lateral wall of good oxygen pond is connected, the opposite side with be equipped with the clearance between the lateral wall of good oxygen pond, through baffling portion is intake in order to baffling in the good oxygen pond to the concentration of mixing the interior intake of good oxygen pond.
7. The improved AO integrated wastewater treatment apparatus with built-in automatic flushing sedimentation tank of claim 6, wherein the number of the baffles is 2 to 10.
8. The improved AO integrated wastewater treatment apparatus with built-in auto-flushing sedimentation tank of claim 1, further comprising a plurality of effluent weirs, which are arranged in the sedimentation tank in a manner of being connected.
9. The improved AO integrated wastewater treatment apparatus with built-in automatic flushing sedimentation tank of claim 1, wherein,
the flushing component comprises a flushing pipe which is fixed in the sedimentation tank through a connecting piece, and the water outlet of the flushing pipe at least partially faces to the sludge return port.
10. The improved AO integrated wastewater treatment apparatus with built-in automatic flushing sedimentation tank of claim 9,
the flushing pipe is connected with the electric valve, the electric valve is electrically connected with the control module, the electric valve is controlled to act based on the instruction, and the flushing pipe responds to the action of the electric valve to discharge water so as to flush the sludge return port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220668499.3U CN217025688U (en) | 2022-03-24 | 2022-03-24 | Built-in improvement AO integral type effluent treatment plant who washes sedimentation tank automatically |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220668499.3U CN217025688U (en) | 2022-03-24 | 2022-03-24 | Built-in improvement AO integral type effluent treatment plant who washes sedimentation tank automatically |
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| CN217025688U true CN217025688U (en) | 2022-07-22 |
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| CN202220668499.3U Active CN217025688U (en) | 2022-03-24 | 2022-03-24 | Built-in improvement AO integral type effluent treatment plant who washes sedimentation tank automatically |
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Address after: Floor 4, block a, Oriental fisherman's Wharf, 1088 Yangshupu Road, Yangpu District, Shanghai 200082 Patentee after: Mai Wang Environmental Technology Co.,Ltd. Country or region after: China Address before: Floor 4, block a, Oriental fisherman's Wharf, 1088 Yangshupu Road, Yangpu District, Shanghai 200082 Patentee before: MCWONG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Country or region before: China |