CN203999113U - A kind of pulse aerating apparatus and comprise the MBR film system of this device - Google Patents
A kind of pulse aerating apparatus and comprise the MBR film system of this device Download PDFInfo
- Publication number
- CN203999113U CN203999113U CN201420346897.9U CN201420346897U CN203999113U CN 203999113 U CN203999113 U CN 203999113U CN 201420346897 U CN201420346897 U CN 201420346897U CN 203999113 U CN203999113 U CN 203999113U
- Authority
- CN
- China
- Prior art keywords
- support tube
- collector box
- mbr
- sleeve
- membrane
- 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 - Lifetime
Links
- 239000012528 membrane Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000012423 maintenance Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005273 aeration Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000012510 hollow fiber Substances 0.000 description 11
- 238000005265 energy consumption Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000003245 working effect Effects 0.000 description 5
- 238000005842 biochemical reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 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
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a kind of pulse aerating apparatus and comprises the MBR film system of this device, comprises collector box, support tube and is fixed on support tube sleeve around, and collector box inside is provided with collector box air chamber, and top seal is in support tube, and bottom is open; Support tube inside is provided with gas-liquid flow-guiding channel, and top is connected with peripheral space by gas-liquid flow-guiding channel, and bottom opening and horizontal plane are higher than collector box bottom; Sleeve inner is provided with sleeve air chamber, and top is flexibly connected with support tube by supporting mechanism and opening, and bottom opening and horizontal plane are lower than collector box bottom; Sleeve can move up and down along support tube axial direction due.And a kind of MBR film system is provided, comprises membrane support, water gathering system, aerating system and a plurality of MBR membrane module; Water gathering system is fixed on membrane support top; A plurality of MBR membrane modules equidistantly or non-equidistance be arranged in membrane support inside, two inlets of each MBR membrane module by tube stub, be connected with inlet in water gathering system respectively and inner chamber maintenance unimpeded; Membrane support bottom is fixed with aerating system.
Description
Technical field
The utility model relates to a kind of membrane biological reaction waste disposal plant, more specifically, relates to a kind of pulse aerating apparatus and comprises the MBR film system of this device.
Background technology
Along with the development of sewage disposal technology, membrane biological reaction treatment technology becomes main flow gradually.Membrane biological reaction treatment technology is also referred to as film separated activated sludge method, is the technology that membrane technique is combined with biochemical reaction in sewage disposal.The membrane bioreactor wherein adopting to filtering containing dirt water in biochemical reaction tank, is realized mud-water separation with film.On the one hand, film has been held back the microorganism in reaction tank, and the activated sludge concentration in pond is increased greatly, makes the biochemical reaction of degradation of sewage carry out more rapidly thoroughly; On the other hand, due to the high filtering precision of film, obtain high-quality product water.Yet the aerating system in MBR film system is that persistence aeration, complex structure and gas distribution are unreasonable at present, causes MBR film system energy consumption high, membrane separating property is poor, and work-ing life is short.
Utility model content
Therefore, the purpose of this utility model is the MBR film system that a kind of pulse aerating apparatus is provided and comprises this device, and to solve, the existing hollow fiber film thread solid-liquid separation of prior art rate is low, work-ing life is short, system energy consumption high-technology problem.
The utility model is achieved through the following technical solutions:
A kind of pulse aerating apparatus of the present utility model, comprises collector box 11, support tube 12 and is fixed on support tube 12 sleeve 15 around.Described collector box 11 inside are provided with collector box air chamber 13, and top seal is in support tube 12, and bottom is open; Described support tube 12 inside are provided with gas-liquid flow-guiding channel 13, and top is connected with peripheral space by gas-liquid flow-guiding channel 13, and bottom opening and horizontal plane are higher than collector box 11 bottoms; Described sleeve 15 inside are provided with sleeve air chamber 16, and top is flexibly connected with support tube 12 by supporting mechanism and opening, and bottom opening and horizontal plane are lower than collector box 11 bottoms, and bottom opening is less than open top; Described sleeve 15 can move up and down along support tube 12 axial direction dues.
Preferably, the mode of connection of described support tube 12 and sleeve 14 adopts and is threaded or slide block is connected.
Preferably, the cross-sectional shape of described collector box 11, support tube 12 and sleeve 14 is rectangle, circle or Polygons.
The utility model also provides a kind of MBR film system, comprises membrane support 21, water gathering system 30, aerating system 40 and a plurality of MBR membrane module 22; Described water gathering system 30 is fixed on membrane support 21 tops; Described a plurality of MBR membrane modules 22 equidistantly or non-equidistance be arranged in the inside of membrane support 21, two inlets of each MBR membrane module 22 by tube stub, be connected with inlet in water gathering system 30 respectively and inner chamber maintenance unimpeded; Membrane support 21 bottoms are fixed with aerating system 40.
Preferably, described water gathering system 30 comprises catchment female pipe 31 and the Duo Gen arm 32 that catchments, the mother that catchments manages 31 1 ends and is provided with water outlet, the other end sealing, described female pipe 31 lower ends of catchmenting are connected with the arm 32 that catchments and both inner chambers keep unimpeded, and each arm 32 both sides of catchmenting is respectively provided with two inlets.
Preferably, the inlet of arm 32 both sides of catchmenting in described water gathering system 30 is connected respectively at the inlet on MBR membrane module 22 and inner chamber keeps unimpeded.
Preferably, described aerating system 40 comprises the female pipe 41 of air inlet, air intake branch 42 and a plurality of pulse aerating apparatus, the female pipe of air inlet 41 tops are provided with inlet mouth, and both ends are connected with air intake branch 42 respectively and inner chamber keeps unimpeded, and each air intake branch 42 top is fixed with a plurality of pulse aerating apparatuss.
Preferably, in described aerating system 40, the upper surface of air intake branch 42 is provided with a plurality of qi-emitting holes, and each qi-emitting hole section area is 10mm
2-1000 mm
2.
Preferably, each qi-emitting hole on described air intake branch 42 is connected with the collector box air chamber 14 in pulse aerating apparatus respectively.
A kind of pulse aerating apparatus in the utility model is realized the eruption aeration of pulsed by pressure balanced principle, reduced system energy consumption, reduced input cost, a kind of MBR film system that comprises this aerating apparatus that the utility model also provides, improve membrane sepn efficiency and the stifled ability of anti-soil of hollow fiber film thread, extended the work-ing life of membrane module.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of pulse aerating apparatus of the present utility model.
Fig. 2 is the structural principle schematic isometric of MBR film system of the present utility model.
Fig. 3 is the structural principle schematic isometric of water gathering system in MBR film system of the present utility model.
Fig. 4 is the structural principle schematic isometric of aerating system in MBR film system of the present utility model.
In figure: 10-pulse aerating apparatus; 11-collector box; 12-support tube; 13-gas-liquid flow-guiding channel; 14-collector box air chamber; 15-sleeve; 16-sleeve air chamber; 20-MBR film system, 21-membrane support; 22-MBR membrane module; 30-water gathering system; 31-female pipe that catchments; The 32-arm that catchments; 40-aerating system; The female pipe of 41-air inlet; 42-air intake branch.
Embodiment
In order to understand better the utility model, below in conjunction with accompanying drawing, the utility model is described in further detail, to understand up hill and dale the technical solution of the utility model.
Fig. 1 is the structural principle schematic diagram of pulse aerating apparatus 10 of the present utility model.As shown in Figure 1, pulse aerating apparatus 10, comprises collector box 11, support tube 12 and is fixed on support tube 12 sleeve 15 around.Collector box 11 inside are provided with collector box air chamber 13, and top seal is in support tube 12, and bottom is open; Support tube 12 inside are provided with gas-liquid flow-guiding channel 13, and top is connected with peripheral space by gas-liquid flow-guiding channel 13, and bottom opening and horizontal plane are higher than collector box 11 bottoms; Sleeve 15 inside are provided with sleeve air chamber 16, and top is flexibly connected with support tube 12 by supporting mechanism and opening, and bottom opening and horizontal plane are lower than collector box 11 bottoms, and bottom opening is less than open top; Sleeve 15 can move up and down along support tube 12 axial direction dues.
In described pulse aerating apparatus 10, support tube 12 adopts with the mode of connection of sleeve 14 and is threaded, slide block is connected or other mechanical connections.The cross-sectional shape of collector box 11, support tube 12 and sleeve 14 is rectangle, circle or Polygons.
Fig. 2 is the structural principle schematic isometric of MBR film system 20 of the present utility model.As shown in Figure 2, MBR film system 20, comprises membrane support 21, water gathering system 30, aerating system 40 and a plurality of MBR membrane module 22; Described water gathering system 30 is fixed on membrane support 21 tops; Described a plurality of MBR membrane modules 22 equidistantly or non-equidistance be arranged in the inside of membrane support 21, two inlets of each MBR membrane module 22 by tube stub, be connected with inlet in water gathering system 30 respectively and inner chamber maintenance unimpeded; Membrane support 21 bottoms are fixed with aerating system 40.
Fig. 3 is the structural principle schematic isometric of water gathering system 30 in MBR film system 20 of the present utility model.As shown in Figure 3, water gathering system 30 comprises catchment female pipe 31 and the Duo Gen arm 32 that catchments, the mother that catchments manages 31 1 ends and is provided with inlet, the other end sealing, described female pipe 31 lower ends of catchmenting are connected with the arm 32 that catchments and both inner chambers keep unimpeded, each arm 32 both sides of catchmenting is respectively provided with two inlets, and this inlet is connected respectively at the inlet on MBR membrane module 22 and inner chamber keeps unimpeded.
Fig. 4 is the structural principle schematic isometric of aerating apparatus 40 in MBR film system 20 of the present utility model.As shown in Figure 4, aerating system 40 comprises the female pipe 41 of air inlet, air intake branch 42 and a plurality of pulse aerating apparatus 10, the female pipe of air inlet 41 tops are provided with inlet mouth, and both ends are connected with air intake branch 42 respectively and inner chamber keeps unimpeded, and each air intake branch 42 top is fixed with a plurality of pulse aerating apparatuss 10.The upper surface of air intake branch 42 is provided with a plurality of qi-emitting holes, and each qi-emitting hole section area is 10mm
2-1000 mm
2, this qi-emitting hole divides with the collector box air chamber 14 in corresponding pulse aerating apparatus 10 and is connected.
During use, MBR film system 20 is as shown in Figure 2 immersed in membrane biological reaction pond, makes MBR membrane module 22 be positioned at 20mm to 400mm under the liquid level of membrane biological reaction pond.Under normal temperature and pressure, the hollow fiber film thread inner chamber of Send out pump in MBR membrane module 22 produces negative pressure, thereby make the former water in membrane biological reaction pond through hollow fiber film thread filtration, be collected to the collecting chamber of MBR membrane module 22 inside, via two inlets in MBR membrane module 22, by the arm 32 that catchments, be collected in the mother's pipe 31 that catchments, through the water outlet of female pipe 31 that catchments, by Send out pump is lasting, export.Meanwhile, the low discharge pressurized air of air pump output enters the female pipe of air inlet 41 inner chambers via the inlet mouth on the female pipe 41 of air inlet, and pressurized air enters air intake branch 42 inner chambers and enters in pulse aerating apparatus 10 through gas distribution pipe.In pulse aerating apparatus 10, be full of liquid, low discharge pressurized air enters in the collector box air chamber 14 of collector box 11 inside, in extruding collector box air chamber 14, liquid is discharged collector box 11, in collector box air chamber 14, liquid is discharged completely, pressurized air enters the liquid that continues in the sleeve air chamber 16 of sleeve 15 inside to fill this inside of extruding until liquid level drops to Lb horizontal plane, pressurized air continues to increase, by support tube 12 bottom opening ports, enter in gas-liquid flow-guiding channel 13, and enter in membrane biological reaction pond to MBR membrane module 22 aerations that are positioned at top by this passage.Because the pressurized air entering is for aeration, air pressure in air pressure in collector box air chamber 14 and sleeve air chamber 16 declines, liquid level in this air chamber rises until to Lb horizontal plane, because the bottom opening of sleeve 15 is smaller, produce siphonage, the liquid countercurrent of the bottom opening port of sleeve 15 and on mixing pressurized air in 2 air chambers and entering in membrane biological reaction pond through gas-liquid flow-guiding channel 13, liquid level in 2 air chambers continues to rise until to La horizontal plane simultaneously, air chamber internal and external pressure balance, aeration stops.Low discharge pressurized air continues to enter, continue liquid in extruding collector box air chamber 14 and discharge collector box 11, in collector box air chamber 14, liquid is discharged completely, pressurized air enters the liquid that continues in the sleeve air chamber 16 of sleeve 15 inside to fill this inside of extruding until liquid level drops to Lb horizontal plane, by support tube 12 bottom opening ports, enter in gas-liquid flow-guiding channel 13, and enter in membrane biological reaction pond to MBR membrane module 22 aerations that are positioned at top by this passage.Simultaneously because the pressurized air entering is for aeration, air pressure in air pressure in collector box air chamber 14 and sleeve air chamber 16 declines, liquid level in this air chamber rises until to Lb horizontal plane, because the bottom opening of sleeve 15 is smaller, produce siphonage, the liquid countercurrent of the bottom opening port of sleeve 15 and on mixing pressurized air in 2 air chambers and entering in membrane biological reaction pond through gas-liquid flow-guiding channel 13, liquid level in 2 air chambers continues to rise until to La horizontal plane simultaneously, air chamber internal and external pressure balance, aeration stops.By so repeatedly carrying out aeration and stopping realizing pulse aeration, turn round.The random gas-water mixture exposing of a plurality of pulse aerating apparatuss 10 in aerating system 40 constantly provides containing the higher water body of oxygen to being attached to the lip-deep microorganism of hollow fiber film thread, to accelerate it, decomposes the impurity such as organism in former water.Simultaneously, under the disturbance of the gas-water mixture exposing, because the part in the middle of hollow fiber film thread is unbound state in water, can be significantly with gas current shifting and be not easy to rupture, can well shake off by being attached to the lip-deep pollutent of hollow fiber film thread 33, improve the stifled ability of anti-soil of hollow fiber film thread and then strengthen its solid-liquid separation effect, extending the work-ing life of hollow fiber film thread.During aeration, the low discharge pressurized air that continues to enter, under liquid pressure effect, spray the mixing wastewater with air liquid of large flow, can effectively rinse out hollow fiber film thread surface contaminant, improve hollow fiber film thread antifouling property, it is very low that while also makes the energy consumption of whole film device drop to, and saves input cost.Horizontal plane La and the essence volume V between horizontal plane Lb in two air chambers are pulse aeration rates, because sleeve 15 can move up and down along support tube 12 axial direction dues, be exactly the size that regulates essence volume V accordingly, be regulating impulse aeration rate, the system energy consumption that can regulate different pulse aeration rates to reduce according to different condition of water quality in actual application.
The disclosed a kind of pulse aerating apparatus of the utility model and comprise the MBR film system of this device, has higher antifouling property and longer work-ing life, and water production rate is stable and water quality is good, and system energy consumption is low, is applicable to large-scale municipal wastewater process field.
Claims (9)
1. a pulse aerating apparatus, it is characterized in that: this pulse aerating apparatus comprises collector box (11), support tube (12) and is fixed on support tube (12) sleeve (15) around, described collector box (11) inside is provided with collector box air chamber (13), top seal is in support tube (12), and bottom is open; Described support tube (12) inside is provided with gas-liquid flow-guiding channel (13), and top is connected with peripheral space by gas-liquid flow-guiding channel (13), and bottom opening and horizontal plane are higher than collector box (11) bottom; Described sleeve (15) inside is provided with sleeve air chamber (16), and top is flexibly connected with support tube (12) by supporting mechanism and opening, and bottom opening and horizontal plane are lower than collector box (11) bottom, and bottom opening is less than open top; Described sleeve (15) can move up and down along support tube (12) axial direction due.
2. a kind of pulse aerating apparatus as claimed in claim 1, is characterized in that: described support tube (12) is threaded with the mode of connection employing of sleeve (14) or slide block is connected.
3. a kind of pulse aerating apparatus as claimed in claim 1, is characterized in that: the cross-sectional shape of described collector box (11), support tube (12) and sleeve (14) is rectangle, circle or Polygons.
4. adopt the MBR film system that comprises as claimed in claim 1 a kind of pulse aerating apparatus, it is characterized in that: this MBR film system comprises membrane support (21), water gathering system (30), aerating system (40) and a plurality of MBR membrane module (22); Described water gathering system (30) is fixed on membrane support (21) top; Described a plurality of MBR membrane modules (22) equidistantly or non-equidistance be arranged in the inside of membrane support (21), two inlets of each MBR membrane module (22) by tube stub, be connected with inlet in water gathering system (30) respectively and inner chamber maintenance unimpeded; Membrane support (21) bottom is fixed with aerating system (40).
5. according to a kind of MBR film system as claimed in claim 4, it is characterized in that: described water gathering system (30) comprises catchment female pipe (31) and the many arms that catchment (32), the mother that catchments manages (31) one ends and is provided with inlet, the other end sealing, described female pipe (31) lower end of catchmenting is connected with the arm that catchments (32) and both inner chambers keep unimpeded, and each arm that catchments (32) both sides is respectively provided with two inlets.
6. a kind of MBR film system as claimed in claim 4, is characterized in that: the inlet of the arm that catchments (32) both sides in described water gathering system (30) is connected respectively at the inlet on MBR membrane module (22) and inner chamber keeps unimpeded.
7. according to a kind of MBR film system as claimed in claim 4, it is characterized in that: described aerating system (40) comprises the female pipe of air inlet (41), air intake branch (42) and a plurality of pulse aerating apparatus, the female pipe of air inlet (41) top is provided with inlet mouth, both ends are connected with air intake branch (42) respectively and inner chamber keeps unimpeded, and each air intake branch (42) top is fixed with a plurality of pulse aerating apparatuss.
8. a kind of MBR film system as claimed in claim 4, is characterized in that: in described aerating system (40), the upper surface of air intake branch (42) is provided with a plurality of qi-emitting holes, and each qi-emitting hole section area is 10mm
2-1000 mm
2.
9. a kind of MBR film system as claimed in claim 7, is characterized in that: each qi-emitting hole on described air intake branch (42) is connected with the collector box air chamber (14) in pulse aerating apparatus respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346897.9U CN203999113U (en) | 2014-06-27 | 2014-06-27 | A kind of pulse aerating apparatus and comprise the MBR film system of this device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346897.9U CN203999113U (en) | 2014-06-27 | 2014-06-27 | A kind of pulse aerating apparatus and comprise the MBR film system of this device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203999113U true CN203999113U (en) | 2014-12-10 |
Family
ID=52039143
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420346897.9U Expired - Lifetime CN203999113U (en) | 2014-06-27 | 2014-06-27 | A kind of pulse aerating apparatus and comprise the MBR film system of this device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203999113U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006951A (en) * | 2016-08-02 | 2016-10-12 | 四川拓璞环保科技有限公司 | Intake hood of pulse aeration apparatus used in MBR system |
| CN107324598A (en) * | 2017-08-14 | 2017-11-07 | 海宁泓环境科技有限公司 | A kind of landscape water disposing method of biomembrane |
| CN108545844A (en) * | 2018-04-25 | 2018-09-18 | 崔云华 | A kind of energy-efficient multiple aerating system and its method of sewage disposal |
| CN108892232A (en) * | 2018-07-05 | 2018-11-27 | 嘉兴市盛翔织造有限公司 | A kind of membrane bioreactor cleared up automatically |
| CN112279360A (en) * | 2021-01-04 | 2021-01-29 | 上海威德环保有限公司 | Pulse aerator and working method thereof |
| CN113200610A (en) * | 2021-05-19 | 2021-08-03 | 重庆浩丰规划设计集团股份有限公司 | Ecological pond lotus water purification system |
-
2014
- 2014-06-27 CN CN201420346897.9U patent/CN203999113U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106006951A (en) * | 2016-08-02 | 2016-10-12 | 四川拓璞环保科技有限公司 | Intake hood of pulse aeration apparatus used in MBR system |
| CN107324598A (en) * | 2017-08-14 | 2017-11-07 | 海宁泓环境科技有限公司 | A kind of landscape water disposing method of biomembrane |
| CN108545844A (en) * | 2018-04-25 | 2018-09-18 | 崔云华 | A kind of energy-efficient multiple aerating system and its method of sewage disposal |
| CN108892232A (en) * | 2018-07-05 | 2018-11-27 | 嘉兴市盛翔织造有限公司 | A kind of membrane bioreactor cleared up automatically |
| CN108892232B (en) * | 2018-07-05 | 2021-02-26 | 嘉兴市盛翔织造有限公司 | Automatic membrane bioreactor who clears up |
| CN112279360A (en) * | 2021-01-04 | 2021-01-29 | 上海威德环保有限公司 | Pulse aerator and working method thereof |
| CN112279360B (en) * | 2021-01-04 | 2021-03-26 | 上海威德环保有限公司 | Pulse aerator and working method thereof |
| CN113200610A (en) * | 2021-05-19 | 2021-08-03 | 重庆浩丰规划设计集团股份有限公司 | Ecological pond lotus water purification system |
| CN113200610B (en) * | 2021-05-19 | 2022-08-16 | 重庆浩丰规划设计集团股份有限公司 | Ecological pond lotus water purification system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |