CN208898641U - A kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment - Google Patents
A kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment Download PDFInfo
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- CN208898641U CN208898641U CN201821326440.6U CN201821326440U CN208898641U CN 208898641 U CN208898641 U CN 208898641U CN 201821326440 U CN201821326440 U CN 201821326440U CN 208898641 U CN208898641 U CN 208898641U
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- fixedly connected
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- wall
- filtration plate
- organic wastewater
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Abstract
The utility model discloses a kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipments, including shell, filter chamber, adsorbent chamber, disengagement chamber, disinfection cavity, partition, water inlet pipe, by-pass filtration plate, secondary filtration plate, three-stage filtration plate, permeable hole, first motor, turntable, bull stick, drive rod, limited block, drive block, fixing axle, elevating lever, position-limiting tube, fixed link, lifter plate, adsorbing bar, water pump, aqueduct, second motor, shaft, fixed ring, rabbling mechanism, filter screen, sedimentation basin, immersible pump, drainage tube, return pipe, valve, COD detector, disinfect box, disinfection nozzle and outlet pipe.The technical issues of the utility model solves is to overcome the organic waste water treating device of the prior art complicated for operation, it is at high cost, low efficiency, the defect of effect difference, a kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment is provided, the features such as it is low in cost with easy to operate, and treatment effeciency is high, effect is good.
Description
Technical field
The utility model relates to technical field of waste water processing, specially a kind of environment-friendly type high concentrated organic wastewater advanced treating
Tapping equipment.
Background technique
Organic wastewater generally refers to the waste water in 2000mg/L or more being discharged by industries such as papermaking, leather and food, has
Machine waste water easily causes Water Eutrophication, harm is bigger, and high concentrated organic wastewater mainly has based on organic pollutant
Following characteristics: first is that organic concentration is high, for COD generally in 2 000 mg/L or more, some is even as high as tens of thousands of or even hundreds of thousands
Mg/L, in contrast, BOD are lower, and the ratio of many waste water BOD and COD is less than 0.3；Second is that complicated component.Contain toxic substance
Matter is given up, and Organic substance in water is in the majority with aromatic compound and heterocyclic compound, and more containing sulfide, nitride, heavy metal and have
Malicious organic matter；Third is that coloration is high, some waste water give out pungent stench, cause adverse effect to ambient enviroment；Fourth is that having strong
Sour strong basicity.Existing organic waste water treating device is complicated for operation, at high cost, low efficiency, processing it is ineffective, it is difficult to effectively
Reduction processed waste water COD value.
Summary of the invention
The technical issues of the utility model solves is to overcome the organic waste water treating device of the prior art complicated for operation, at
This height, low efficiency, the defect of effect difference provide a kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment.Described one
Kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment has easy to operate, and low in cost, treatment effeciency is high, effect is good
The features such as.
To achieve the above object, the utility model provides the following technical solutions: a kind of environment-friendly type high concentrated organic wastewater is deep
Degree processing tapping equipment, including shell, the inner cavity of the shell are respectively arranged with filter chamber, adsorbent chamber, disengagement chamber and disinfection cavity,
It is separated by partition between the filter chamber, adsorbent chamber, disengagement chamber and disinfection cavity, the side of the filter chamber is fixedly connected
There is water inlet pipe, and is respectively arranged with by-pass filtration plate, secondary filtration plate and three-stage filtration plate in the filter chamber, the level-one mistake
Filter plate, secondary filtration plate and three-stage filtration plate are fixedly connected with the inner wall in filter chamber, between the adsorbent chamber and filter chamber
Partition bottom offers several permeable holes, and the side top inner wall of the adsorbent chamber is equipped with first motor, and described first
The output shaft of motor is fixedly connected with turntable, bull stick is fixedly connected on the turntable, the bull stick, which runs through, drive rod, and institute
The shaft for stating bull stick is fixedly connected with two pieces of limited blocks, and two pieces of limited blocks are located at the two sides of drive rod, the transmission
The bottom end of bar is fixedly connected with drive block, and fixing axle, the axis of the fixing axle are fixedly connected between the inner wall of the drive block
Body is arranged with elevating lever, and position-limiting tube is provided with below the drive block, and the two sides tube wall of the position-limiting tube is fixedly connected with
Fixed pole, one end of the fixed link are fixedly connected on the inner wall of adsorbent chamber, and the elevating lever passes through position-limiting tube and extends to limit
The lower section of pipe, and the bottom end of the elevating lever is fixedly connected with lifter plate, the bottom of the lifter plate is fixedly connected with several
The inner wall top of adsorbing bar, the adsorbent chamber is equipped with water pump, two aqueducts is fixedly connected on the water pump, wherein one
The aqueduct extends to the bottom of adsorbent chamber, and another aqueduct then runs through partition and extend in disengagement chamber, described
The second motor is installed at the top of the inner wall of disengagement chamber, the output end of second motor is fixedly connected with shaft, the shaft
Axle body is fixedly connected with several fixed rings, several rabbling mechanisms, the disengagement chamber are provided in each fixed ring
It is inside provided with filter screen, the filter screen is fixedly connected on the bottom end inner wall of disengagement chamber, and is provided with below the filter screen
Sedimentation basin, the disinfection cavity are equipped with immersible pump on the inner wall of disengagement chamber side, are fixedly connected with and draw on the immersible pump
One end of flow tube, the drainage tube through partition and extends in sedimentation basin, and the other end of the drainage tube runs through disinfection cavity
Top exterior walls and extend to outside shell, the drainage pipe end outside shell is fixedly connected with return pipe, the reflux
The both ends of pipe extend through the top exterior walls of shell and are extended to the in filter chamber and disinfection cavity, and the both ends of the return pipe are respectively mounted
There is valve, and be also equipped with COD detector on the return pipe, is fixedly connected with disinfect box at the top of the inner wall of the disinfection cavity,
The bottom of the disinfect box is equipped with disinfection nozzle, and the disinfection cavity is fixedly connected with water outlet on the side wall far from disengagement chamber side
Pipe, the nozzle of the outlet pipe are equally equipped with valve.
Preferably, the rabbling mechanism includes stirring rod, and the stirring rod is fixedly connected on the side wall of fixed ring, shaft
If being fixedly connected with dry plate stirring sheet, and the end of the stirring rod is fixedly connected with scraping blade.
Preferably, the scraping blade is arcuate structure, and the outer wall of the scraping blade is provided with one layer of hairbrush.
Preferably, several through-holes are distributed in the stirring sheet.
Preferably, the by-pass filtration plate, secondary filtration plate and three-stage filtration plate are opened in plate face in being sequentially distributed up and down
Mesh number equipped with several sieve pores, and the by-pass filtration plate, secondary filtration plate and three-stage filtration plate is sequentially increased.
Compared with prior art, the utility model has the beneficial effects that can be filtered to organic wastewater by filter chamber
Processing, so that the large granular impurities such as sandstone contained in organic wastewater be filtered out, driving first motor can make on lifter plate
Lower reciprocating motion, so that the second motor of driving can be such that shaft drive stirs by the organic matter in the adsorbable organic wastewater of adsorbing bar
Mechanism rotation is mixed, organic wastewater can be stirred using rabbling mechanism, thus by small, sludge being dissolved in organic wastewater etc.
Grain impurity is separated, and is filtered by filter screen, can remove the suspended matter in organic wastewater by sedimentation basin, is played net
Change water quality effect, water quality can be detected by COD detector, if COD value is still excessively high if open left side reflux
Organic wastewater is directed into filter chamber by the valve on pipe again carries out advanced treating again, and right side is opened if COD value is up to standard
Organic wastewater is directed into disinfection cavity by the valve on return pipe, can carry out depth to organic wastewater using the chlorine in disinfect box
Disinfection, after the completion of organic wastewater disinfection, opening valve can be such that it is discharged from outlet pipe, then complete the depth of entire organic wastewater
Degree processing discharge process.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the structural schematic diagram of rabbling mechanism.
Figure label: 1 shell, 2 filter chambers, 3 adsorbent chambers, 4 disengagement chambers, 5 disinfection cavities, 6 partitions, 7 water inlet pipes, 8 level-one mistakes
Filter plate, 9 secondary filtration plates, 10 three-stage filtration plates, 11 permeable holes, 12 first motors, 13 turntables, 14 bull sticks, 15 drive rods, 16 limits
Position block, 17 drive blocks, 18 fixing axles, 19 elevating levers, 20 position-limiting tubes, 21 fixed links, 22 lifter plates, 23 adsorbing bars, 24 water pumps, 25
Aqueduct, 26 second motors, 27 shafts, 28 fixed rings, 29 rabbling mechanisms, 291 stirring rods, 292 stirring sheets, 293 scraping blades, 30 mistakes
Strainer, 31 sedimentation basins, 32 immersible pumps, 33 drainage tubes, 34 return pipes, 35 valves, 36 COD detectors, 37 disinfect boxes, 38 disinfections
Spray head, 39 outlet pipes.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of environment-friendly type high concentrated organic wastewater depth
Tapping equipment is managed, including shell 1, the inner cavity of shell 1 are respectively arranged with filter chamber 2, adsorbent chamber 3, disengagement chamber 4 and disinfection cavity 5, mistake
Separated by partition 6 between filter chamber 2, adsorbent chamber 3, disengagement chamber 4 and disinfection cavity 5, the side of filter chamber 2 be fixedly connected with into
Water pipe 7, and by-pass filtration plate 8, secondary filtration plate 9 and three-stage filtration plate 10 are respectively arranged in filter chamber 2, by-pass filtration plate 8,
Secondary filtration plate 9 and three-stage filtration plate 10 are fixedly connected with the inner wall in filter chamber 2, by-pass filtration plate 8,9 and of secondary filtration plate
Three-stage filtration plate 10 offers several sieve pores, and by-pass filtration plate 8, secondary filtration plate 9 in being sequentially distributed up and down in plate face
It is sequentially increased with the mesh number of three-stage filtration plate 10,6 bottom of partition between adsorbent chamber 3 and filter chamber 2 offers several thoroughly
Water hole 11, and the side top inner wall of adsorbent chamber 3 is equipped with first motor 12, the output shaft of first motor 12, which is fixedly connected with, to be turned
Disk 13, is fixedly connected with bull stick 14 on turntable 13, and bull stick 14 is through there is drive rod 15, and the shaft of bull stick 14 is fixedly connected with two
Block limited block 16, two pieces of limited blocks 16 are located at the two sides of drive rod 15, can play position-limiting action, prevent drive rod 15 or so
Shake, the bottom end of drive rod 15 is fixedly connected with drive block 17, and drive block 17 is U-shaped structure, and the inner wall of drive block 17 it
Between be fixedly connected with fixing axle 18, the axle body of fixing axle 18 is arranged with elevating lever 19, and the lower section of drive block 17 is provided with position-limiting tube
20, the two sides tube wall of position-limiting tube 20 is fixedly connected with fixed link 21, and one end of fixed link 21 is fixedly connected on the interior of adsorbent chamber 3
Wall, elevating lever 19 passes through position-limiting tube 20 and extends to the lower section of position-limiting tube 20, and the bottom end of elevating lever 19 is fixedly connected with lifting
Plate 22, the bottom of lifter plate 22 are fixedly connected with several adsorbing bars 23, and the surface adhesion of adsorbing bar 23 has granular activated carbon, inhale
Water pump 24 is installed at the top of the inner wall of attached chamber 3, two aqueducts 25 are fixedly connected on water pump 24, wherein an aqueduct 25 prolongs
The bottom of adsorbent chamber 3 is extended to, another aqueduct 25 then through partition 6 and extends in disengagement chamber 4, the inner wall top of disengagement chamber 4
Portion is equipped with the second motor 26, and the output end of the second motor 26 is fixedly connected with shaft 27, and the axle body of shaft 27 is fixedly connected with
Several fixed rings 28, fixed ring 28 are equally distributed in shaft 27, and several stirrings are provided in each fixed ring 28
Mechanism 29, rabbling mechanism 29 are center annular distribution in the outer wall of fixed ring 28 using the center of circle of shaft 27, and rabbling mechanism 29 includes
Stirring rod 291, stirring rod 291 are fixedly connected on the side wall of fixed ring 28, if shaft is fixedly connected with dry plate stirring sheet 292,
Several through-holes are distributed in stirring sheet 292, it is possible to increase the contact area of stirring sheet 292 and organic wastewater, to improve stirring
Efficiency and effect, while being adhered in stirring sheet 292 prevented also from the impurity particle in organic wastewater, the end of stirring rod 291
End is fixedly connected with scraping blade 293, and scraping blade 293 is arcuate structure, and the outer wall of scraping blade 293 is provided with one layer of hairbrush, when shaft 27
When stirring rod 291 being driven to rotate, wiper can be carried out to the inner wall of disengagement chamber 4 using scraping blade 293, to prevent in organic wastewater
The granule foreigns such as sludge are adhered to the inner wall of disengagement chamber 4, and filter screen 30 is provided in disengagement chamber 4, and filter screen 30 is fixedly connected on
The bottom end inner wall of disengagement chamber 4, and the lower section of filter screen 30 is provided with sedimentation basin 31, inner wall of the disinfection cavity 5 close to 4 side of disengagement chamber
On immersible pump 32 is installed, be fixedly connected with drainage tube 33 on immersible pump 32, one end of drainage tube 33 through partition 6 and extends to
In sedimentation basin 31, and the other end of drainage tube 33 runs through the top exterior walls of disinfection cavity 5 and extends to outside shell 1, is located at outside shell 1
33 end of drainage tube be fixedly connected with return pipe 34, the both ends of return pipe 34 extend through the top exterior walls of shell 1 and extension
To filter chamber 2 and disinfection cavity 5, the both ends of return pipe 34 are mounted on valve 35, and COD detection is also equipped on return pipe 34
The inner wall top of instrument 36, disinfection cavity 5 is fixedly connected with disinfect box 37, and the bottom of disinfect box 37 is equipped with disinfection nozzle 38, disinfection
Chamber 5 is fixedly connected with outlet pipe 39 on the side wall far from 4 side of disengagement chamber, the nozzle of outlet pipe 39 is equally equipped with valve 35.
Working principle: when the utility model is used, organic wastewater to be processed is directed into filter chamber by water inlet pipe 7
In 2, organic wastewater enters after filter chamber 2 through the sieve pore stream on by-pass filtration plate 8, secondary filtration plate 9 and three-stage filtration plate 10
To the bottom of filter chamber 2, organic wastewater can be carried out using by-pass filtration plate 8, secondary filtration plate 9 and three-stage filtration plate 10 triple
Filtering, so that the large granular impurities such as sandstone contained in organic wastewater are filtered out, it is organic after being filtered by filter chamber 2
Waste water enters in adsorbent chamber 3 through permeable hole 11, then first motor 12 is driven to make it that turntable 13 be driven to rotate, and 13 turns of turntable
Drive rod 15 can be driven to pump by bull stick 14 after dynamic, drive rod 15 then drives 19 edge of elevating lever by drive block 17
Position-limiting tube 20 pump, then drive lifter plate 22 also together and then pumps, about 22 lifter plate is past
By the organic matter in the adsorbable organic wastewater of adsorbing bar 23 when moving again, drive water pump 24 that organic wastewater is sucked water guide later
Pipe 25 is simultaneously directed into disengagement chamber 4 by aqueduct 25, drives the second motor 26 that shaft 27 is made to drive rabbling mechanism at the same time
29 rotations, can be stirred organic wastewater using rabbling mechanism 29, thus by little particles such as the sludge being dissolved in organic wastewater
Impurity is separated, and is filtered by filter screen 30, and remaining organic wastewater enters to the heavy of lower section through filter screen 30
In shallow lake pond 31, the suspended matter in organic wastewater can remove by sedimentation basin 31, play the effect to purify water, by sedimentation basin 31
Precipitation and purification for a period of time after, the organic wastewater in sedimentation basin 31 is sucked into drainage tube 33 by driving immersible pump 32, and is led to
Cross drainage tube 33 and be directed into return pipe 34, when organic wastewater enters in return pipe 34, by COD detector 36 can to water quality into
Row detection, if COD value is still excessively high if open left side return pipe 34 on valve 35 organic wastewater was directed into again
Advanced treating is carried out in filter chamber 2 again, the valve 35 opened on the return pipe 34 of right side if COD value is up to standard imports organic wastewater
Into disinfection cavity 5, filled with chlorine in disinfect box 37, chlorine can be sprayed by disinfection nozzle 38, thus can be to having using chlorine
Machine waste water carries out depth disinfection, and after the completion of organic wastewater disinfection, opening valve 35 can be such that it is discharged from outlet pipe 39, then complete
At the advanced treating discharge process of entire organic wastewater.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment, including shell (1), it is characterised in that: described outer
The inner cavity of shell (1) is respectively arranged with filter chamber (2), adsorbent chamber (3), disengagement chamber (4) and disinfection cavity (5), the filter chamber (2),
It is separated by partition (6) between adsorbent chamber (3), disengagement chamber (4) and disinfection cavity (5), the side of the filter chamber (2) is fixed
It is connected with water inlet pipe (7), and is respectively arranged with by-pass filtration plate (8), secondary filtration plate (9) and three-level in the filter chamber (2)
Filter plate (10), the by-pass filtration plate (8), secondary filtration plate (9) and three-stage filtration plate (10) are fixedly connected in filter chamber
(2) inner wall, partition (6) bottom between the adsorbent chamber (3) and filter chamber (2) offer several permeable holes (11), and
The side top inner wall of the adsorbent chamber (3) is equipped with first motor (12), and the output shaft of the first motor (12) is fixed to be connected
It being connected to turntable (13), is fixedly connected with bull stick (14) on the turntable (13), the bull stick (14), which is run through, to be had drive rod (15), and
The shaft of the bull stick (14) is fixedly connected with two pieces of limited blocks (16), and two pieces of limited blocks (16) are located at drive rod
(15) bottom end of two sides, the drive rod (15) is fixedly connected with drive block (17), between the inner wall of the drive block (17)
It is fixedly connected with fixing axle (18), the axle body of the fixing axle (18) is arranged with elevating lever (19), under the drive block (17)
Side is provided with position-limiting tube (20), and the two sides tube wall of the position-limiting tube (20) is fixedly connected with fixed link (21), the fixed link
(21) one end is fixedly connected on the inner wall of adsorbent chamber (3), and the elevating lever (19) passes through position-limiting tube (20) and extends to limit
The lower section of (20) is managed, and the bottom end of the elevating lever (19) is fixedly connected with lifter plate (22), the bottom of the lifter plate (22)
Several adsorbing bars (23) are fixedly connected with, are equipped with water pump (24) at the top of the inner wall of the adsorbent chamber (3), the water pump (24)
On be fixedly connected with two aqueducts (25), wherein an aqueduct (25) extends to the bottom of adsorbent chamber (3), Ling Yigen
The aqueduct (25) then through partition (6) and extends in disengagement chamber (4), is equipped at the top of the inner wall of the disengagement chamber (4)
The output end of second motor (26), second motor (26) is fixedly connected with shaft (27), and the axle body of the shaft (27) is solid
Surely several fixed rings (28) are connected with, several rabbling mechanisms (29) are provided on each fixed ring (28), it is described
It is provided with filter screen (30) in disengagement chamber (4), the filter screen (30) is fixedly connected on the bottom end inner wall of disengagement chamber (4), and institute
It states and is provided with below filter screen (30) sedimentation basin (31), the disinfection cavity (5) is installed on the inner wall of disengagement chamber (4) side
Have immersible pump (32), be fixedly connected with drainage tube (33) on the immersible pump (32), one end of the drainage tube (33) run through every
Plate (6) simultaneously extends in sedimentation basin (31), and the other end of the drainage tube (33) runs through the top exterior walls of disinfection cavity (5) and prolongs
It extends to shell (1) outside, is located at the drainage tube (33) end of shell (1) outside and is fixedly connected with return pipe (34), the reflux
The both ends of pipe (34) extend through the top exterior walls of shell (1) and are extended to the in filter chamber (2) and disinfection cavity (5), the reflux
The both ends of pipe (34) are mounted on valve (35), and COD detector (36), the disinfection are also equipped on the return pipe (34)
It is fixedly connected with disinfect box (37) at the top of the inner wall of chamber (5), the bottom of the disinfect box (37) is equipped with disinfection nozzle (38), institute
It states and is fixedly connected with outlet pipe (39) on the side wall of disinfection cavity (5) separate disengagement chamber (4) side, the nozzle of the outlet pipe (39)
Valve (35) are equally installed.
2. a kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment according to claim 1, it is characterised in that:
The rabbling mechanism (29) includes stirring rod (291), and the stirring rod (291) is fixedly connected on the side wall of fixed ring (28),
If shaft is fixedly connected with dry plate stirring sheet (292), and the end of the stirring rod (291) is fixedly connected with scraping blade (293).
3. a kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment according to claim 2, it is characterised in that:
The scraping blade (293) is arcuate structure, and the outer wall of the scraping blade (293) is provided with one layer of hairbrush.
4. a kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment according to claim 2, it is characterised in that:
Several through-holes are distributed on the stirring sheet (292).
5. a kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment according to claim 1, it is characterised in that:
The by-pass filtration plate (8), secondary filtration plate (9) and three-stage filtration plate (10) offer in plate face in being sequentially distributed up and down
Several sieve pores, and the mesh number of the by-pass filtration plate (8), secondary filtration plate (9) and three-stage filtration plate (10) is sequentially increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821326440.6U CN208898641U (en) | 2018-08-17 | 2018-08-17 | A kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821326440.6U CN208898641U (en) | 2018-08-17 | 2018-08-17 | A kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208898641U true CN208898641U (en) | 2019-05-24 |
Family
ID=66569542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821326440.6U Expired - Fee Related CN208898641U (en) | 2018-08-17 | 2018-08-17 | A kind of environment-friendly type high concentrated organic wastewater advanced treating tapping equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208898641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763287A (en) * | 2021-01-15 | 2022-07-19 | 安徽之泓环境工程有限公司 | Municipal administration sewage treatment plant |
-
2018
- 2018-08-17 CN CN201821326440.6U patent/CN208898641U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763287A (en) * | 2021-01-15 | 2022-07-19 | 安徽之泓环境工程有限公司 | Municipal administration sewage treatment plant |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190524 Termination date: 20190817 |