CN208577593U - A kind of combination MBR sewage treatment unit - Google Patents
A kind of combination MBR sewage treatment unit Download PDFInfo
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- CN208577593U CN208577593U CN201820885145.8U CN201820885145U CN208577593U CN 208577593 U CN208577593 U CN 208577593U CN 201820885145 U CN201820885145 U CN 201820885145U CN 208577593 U CN208577593 U CN 208577593U
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Abstract
The utility model discloses a kind of combination MBR sewage treatment units, including collecting pit, conditioning tank, anaerobic pond, anoxic pond, aerobic tank, combine octagon inclined-tube sedimentation tank, MBR membrane cisterna, clear water reserviors, the collecting pit connects conditioning tank by pipeline, the conditioning tank has elevator pump, the conditioning tank is connected to anaerobic pond, the anaerobic pond has fine fack, anoxic pond is provided with by the anaerobic pond, the anaerobic pond is connect with aerobic tank, the aerobic tank conducting is in combination octagon inclined-tube sedimentation tank, the combination octagon inclined-tube sedimentation tank is connected with MBR membrane cisterna, the MBR membrane cisterna is internally provided with two groups of MBR processing instruments, the MBR membrane cisterna is connected to the clear water reserviors, the clear water reserviors have No.1 treated water conduit, there is high mountain pond force (forcing) pump on the No.1 treated water conduit.The utility model has the advantages that treatment effeciency is high, effluent quality is good, facility compact, occupied area are small, easy realizations automatic control, operational management are simple, is mainly used for sanitary sewage disposal.
Description
Technical field
The utility model relates to technical field of sewage, specifically a kind of combination MBR sewage treatment unit.
Background technique
China is a water shortage country, and sewage treatment and reuse are to develop and use the effective measures of water resource, reusing sewage
It is to be used for greening, flushing, the ornamental water body of supplement etc. after the processing by municipal sewage by equipment such as membrane bioreactors
It is non-to drink purpose, and clean water is used to drink the purposes of contour water quality requirement, municipal sewage can obtain nearby, eliminate over long distances
Water delivery, pollutant is significantly removed after being processed, has not only saved water resource in this way, decreases environmental pollution,
The area of many water shortages is widely used reusing sewage in the world, is considered to have significant society, environment and economic effect
Benefit.
103319049 A of Patent No. CN is related to a kind of sewage-treatment plant, including pretreatment system and sewage treatment system
System, the sewage disposal system are cleaned by ultrasonic pond, ultra violet sterilizer and clear water reserviors by biochemical aeration tank, MBR film and pass through pipeline
It is followed in series to form, the pretreatment system is connected to the biochemical aeration tank by pipeline, and the present invention is that a kind of MBR film is dirty
Water treatment system can be synchronized and be handled sanitary wastewater and oily waste water, save a large amount of resource, and easy cleaning, disinfection
Thoroughly, also have effluent quality high-quality and stablize, excess sludge production is few, occupied area is small, do not limited, operated by setting occasion
Advantage convenient for management, the disadvantage is that sewage treatment is too simple so that sewage treatment result is poor, sludge collects processing result
It is undesirable, structure disperses.
Utility model content
Aiming at the defects existing in the prior art, the utility model aim be to provide a kind for the treatment of effeciency it is high,
Effluent quality is good, facility compact, occupied area are small, easy realization automatically controls, operational management is simple.
The utility model technical solution used for the above purpose is: a kind of combination MBR sanitary sewage disposal dress
It sets, including collecting pit, conditioning tank, anaerobic pond, anoxic pond, aerobic tank, combination octagon inclined-tube sedimentation tank, MBR membrane cisterna, clear water
Pond is provided with garbage collection area by the collecting pit, and the collecting pit is connected with conditioning tank by pipeline, sets in the conditioning tank
It is equipped with No.1 liquid-level switch, No.1 liquid-level switch side is fixedly installed with elevator pump, and the elevator pump water outlet is fixed to be connected
It is connected to No.1 sewage conduct, the No.1 sewage conduct outlet is fixedly connected on anaerobic pond, and the anaerobic pond intake pool mouth is fixed
Fine fack is installed, the anaerobic pond bottom of pond is fixedly installed with No.1 diving mixer, is provided with anoxic pond by the anaerobic pond,
The anaerobic pond is provided with water hole and is connected to the anoxic pond, and No. two liquid-level switches, the liquid level are provided in the anoxic pond
Switch two sides is respectively fixedly mounted there are two No. two diving mixers, the anoxic pond is fixedly connected with No. two sewage conducts, described
Pumping motor is fixedly installed on No. two sewage conducts, No. two sewage conducts are connect with aerobic tank, and the aerobic tank is fixed
Be connected with No.1 emptying pipeline, the aerobic tank is fixedly connected with No. three sewage conducts, No. three sewage conducts with combine eight
Angle-style inclined-tube sedimentation tank is connected, and inclined tube is fixedly installed with inside the combination octagon inclined-tube sedimentation tank, and the combination is octagonal
Type inclined-tube sedimentation tank center is fixedly installed with lifting center drive mud-scraper, and the lifting center drive mud-scraper lower part is provided with sludge bucket,
The combination octagon inclined-tube sedimentation tank is provided with water outlet triangle overflow weir, and the water outlet triangle overflow weir is fixedly installed with No. four
Sewage conduct, No. four sewage conducts are connected with three component branch pipes, and each branch pipe end is connected with MBR membrane cisterna, institute
It states MBR membrane cisterna and is internally provided with two groups of MBR processing instruments, No. three liquid-level switches, the MBR film are provided with by the MBR processing instrument
Pond is connected with No. two emptying pipelines, and the MBR processing instrument is fixedly connected to No. five sewage conducts, and No. five sewage conducts are solid
Surely it is connected with suction pump, the suction pump outlet is fixedly connected with No. six sewage conducts, and No. six sewage conducts are fixedly connected
In being provided with No. four liquid-level switches in the clear water reserviors, the clear water reserviors, the clear water reserviors are fixedly connected with No.1 treated water conduit,
High mountain pond force (forcing) pump is fixedly installed on the No.1 treated water conduit.
Aeration stick is provided in the aerobic tank, the aeration stick is connected with gas conduit, the gas conduit other end
It is connect respectively with three groups of MBR processing instruments, is connected with Roots blower in the middle part of the gas conduit.
The sludge bucket is connected with No.1 sludge conduction pipe, is fixedly connected with sludge reflux on the No.1 sludge conduction pipe
Valve, the No.1 sludge conducting pipe end are connected separately with No. two sludge conduction pipes and No. three sludge conduction pipes, No. two dirts
Mud conduction pipe is connect with the fine fack, and No. three sludge conduction pipes are connected to the MBR membrane cisterna, No. three sludge conducting
MBR reflux pump is provided on pipe.
No. four sludge conduction pipes are provided in the middle part of No. two sludge conduction pipe, No. four sludge conduction pipes are communicated with dirt
Mud thickener is provided with No. six liquid-level switches in the sludge concentration tank, and the sludge concentration tank is fixedly connected with Treatment of Sludge
It manages, is fixedly installed with sludge screw pump on the Treatment of Sludge pipe, the Treatment of Sludge pipe is connected with sludge filter press, described
Flocculant addition instrument is connected on Treatment of Sludge pipe.
It is connected with fungicide addition instrument on No. six sewage conducts, is connected with No. two clear water on No. five sewage conducts
Conduit, No. two treated water conduits are connected with back suction water tank, are fixedly connected with back suction water pump on No. two treated water conduits.
The utility model has the beneficial effects that fine fack is to section resistance bulk in suspension or the solid pollution of floating state
Object mitigates the processing load of water treatment technology system subsequent handling, prevents blocking water pump, equipment, the suspension of water after satisfaction processing
Object requirement, sewage through anaerobic zone and anoxic zone, organic matter can be utilized by polyP bacteria and denitrifying bacteria rapidly so that concentration very
It is low, be conducive to the growth and breeding of the nitrifier of autotrophy, under the conditions of anaerobic-anoxic-supports alternate run well, it is swollen to be not susceptible to sludge
Swollen, lifting center drive mud-scraper is arranged in sedimentation basin can remove the floating material of the sludge precipitated in sedimentation basin and water surface surface layer,
It ensureing and is not blocked inside combination octagon inclined-tube sedimentation tank, setting MBR membrane cisterna makes system nitrification efficiency height be not required to backwash, and
Be discharged concentration of suspension and be far below traditional solid-liquid separating equipment, keep whole system process simple, be easily integrated, for reduce management and
Operate more convenient, whole device is by the process flow of systematization, so that water quality is more high-quality after sewage treatment.
Detailed description of the invention
Fig. 1 is the utility model flowage structure schematic diagram.
In figure: 1 collecting pit, 2 conditioning tanks, 3 anaerobic ponds, 4 anoxic ponds, 5 aerobic tanks, 6 combination octagon inclined-tube sedimentation tanks,
7MBR membrane cisterna, 8 clear water reserviors, 9 garbage collection areas, 10 No.1 liquid-level switches, 11 elevator pumps, 12 No.1 sewage conducts, 13 fine facks,
14 No.1 diving mixers, 15 No. two liquid-level switches, 16 No. two diving mixers, 17 No. two sewage conducts, 18 pumping motors, 19
No.1 empties pipeline, 20 No. three sewage conducts, 21 lifting center drive mud-scrapers, 22 sludge buckets, 23 triangle overflow weirs, 24 No. four sewage
Pipeline, 25 branched pipes, 26MBR processing instrument, 27 No. five sewage conducts, 28 suction pumps, 29 No. six sewage conducts, 30 No. four liquid levels are opened
Pass, 31 No.1 treated water conduits, 32 high mountain pond force (forcing) pumps, 33 aeration sticks, 34 gas conduits, 35 Roots blowers, 36 No.1s are dirty
Mud conduction pipe, 37 No. two sludge conduction pipes, 38 No. three sludge conduction pipes, 39MBR reflux pump, 40 No. four sludge conduction pipes, 41 dirts
Mud thickener, 42 No. five liquid-level switches, 43 Treatment of Sludge pipes, 44 sludge screw pumps, 45 sludge filter press, the addition of 46 flocculants
Instrument, 47 fungicide add instrument, 48 No. two treated water conduits, 49 back suction water tanks, 50 back suction water pumps, 51 sludge reflux valves, 52 inclined tubes, 53
No. two emptying pipelines, 54 No. three liquid-level switches.
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.
Referring to Fig. 1, a kind of combination MBR sewage treatment unit, including collecting pit 1, conditioning tank 2, anaerobic pond 3, lack
Oxygen pond 4, aerobic tank 5 combine octagon inclined-tube sedimentation tank 6, MBR membrane cisterna 7, clear water reserviors 8, are provided with garbage collection by collecting pit 1
Area 9, collecting pit 1 are connected with conditioning tank 2 by pipeline, and No.1 liquid-level switch 10, No.1 liquid-level switch 10 are provided in conditioning tank 2
Side is fixedly installed with elevator pump 11, and 11 water outlet of elevator pump is fixedly connected with No.1 sewage conduct 12, No.1 sewage conduct 12
Outlet is fixedly connected on anaerobic pond 3, and 3 intake pool mouth of anaerobic pond is fixedly installed with fine fack 13, and 3 bottom of pond of anaerobic pond is fixedly installed with
No.1 diving mixer 14 is provided with anoxic pond 4 by anaerobic pond 3, and anaerobic pond 3 is provided with water hole and is connected to anoxic pond 4, anoxic pond
It is provided with No. two liquid-level switches 15 in 4, liquid-level switch two sides are respectively fixedly mounted that there are two No. two diving mixers 16, anoxic ponds 4
No. two sewage conducts 17 are fixedly connected with, pumping motor 18, No. two sewage conducts 17 are fixedly installed on No. two sewage conducts 17
It is connect with aerobic tank 5, aerobic tank 5 is fixedly connected with No.1 emptying pipeline 19, and aerobic tank 5 is fixedly connected with No. three sewage conducts
20, No. three sewage conducts 20 are connected with octagon inclined-tube sedimentation tank 6 is combined, and combine fixed inside octagon inclined-tube sedimentation tank 6
Inclined tube 52 is installed, combination 6 center of octagon inclined-tube sedimentation tank is fixedly installed with lifting center drive mud-scraper 21, and center driving scrapes mud
21 lower part of machine is provided with sludge bucket 22, and combination octagon inclined-tube sedimentation tank 6 is provided with water outlet triangle overflow weir 23, and water outlet triangle overflows
Stream weir 23 is fixedly installed with No. four sewage conducts 24, and No. four sewage conducts 24 are connected with three component branch pipes 25, each branch pipe 25
End is connected with MBR membrane cisterna 7, and MBR membrane cisterna 7 is internally provided with two groups of MBR processing instruments 26, is provided with No. three by MBR processing instrument 26
Liquid-level switch 54, the MBR membrane cisterna 77 are connected with No. two emptying pipelines 53, and MBR processing instrument 26 is fixedly connected to No. five sewage
Pipeline 27, No. five sewage conducts 27 are fixedly connected with suction pump 28, and the outlet of suction pump 28 is fixedly connected with No. six sewage conducts 29,
No. six sewage conducts 29 are fixedly connected on clear water reserviors 8, and No. four liquid-level switches 30 are provided in clear water reserviors 8, and clear water reserviors 8 are fixedly connected
There is No.1 treated water conduit 31, high mountain pond force (forcing) pump 32 is fixedly installed on No.1 treated water conduit 31.
In the utility model, aeration stick 33 is provided in aerobic tank 5, aeration stick 33 is connected with gas conduit 34, and gas is led
34 other end of pipe is connect with three groups of MBR processing instruments 26 respectively, and Roots blower 35 is connected in the middle part of gas conduit 34, in this way can be with
Oxygen is efficiently transmitted in the aeration tank of any depth makes high-concentration sewage treatment effect more obvious；Sludge bucket 22 connects
It is connected to No.1 sludge conduction pipe 36, sludge reflux valve 51, No.1 sludge conduction pipe are fixedly connected on No.1 sludge conduction pipe 36
36 ends are connected separately with No. two sludge conduction pipes 37 and No. three sludge conduction pipes 38, No. two sludge conduction pipes 37 and fine fack 13
Connection, No. three sludge conduction pipes 38 are connected to MBR membrane cisterna 7, are provided with MBR reflux pump 39 on No. three sludge conduction pipes 38, pass through
This setting can be such that returned sludge brings into, and polyP bacteria carries out releasing phosphorus and denitrification denitrogenation makes sewage treatment high-quality；No. two sludge are led
No. four sludge conduction pipes 40 are provided in the middle part of siphunculus 37, No. four sludge conduction pipes 40 are communicated with sludge concentration tank 41, sludge condensation
It is provided with No. five liquid-level switches 42 in pond 41, sludge concentration tank 41 is fixedly connected with Treatment of Sludge pipe 43, on Treatment of Sludge pipe 43
It is fixedly installed with sludge screw pump 44, Treatment of Sludge pipe 43 is connected with sludge filter press 45, is connected on Treatment of Sludge pipe 43
Flocculant adds instrument 46, and setting Treatment of Sludge process can discharge sludge normalization to effective protection environment；No. six sewage
It is connected with fungicide addition instrument 47 on pipeline 29, is connected with No. two treated water conduits 48 on No. five sewage conducts 27, described two
Number treated water conduit 48 is connected with back suction water tank 49, is fixedly connected with back suction water pump 50 on No. two treated water conduits 48, is arranged
Sterilization addition instrument, back suction water tank 49, back suction water pump 50 carry out suction water outlet sterilization so that sewage treatment result is more high-quality.
The working principle of the utility model is: being then sent to adjusting in use, be collected sewage by collecting pit 1
Sewage is sent to anaerobic pond 3 by No.1 sewage conduct 12 by elevator pump 11 later by pond 2, and the fine fack 13 of anaerobic pond 3 will be miscellaneous
Matter is isolated away, and sewage enters anaerobic pond 3, and the easily biodegradable organics in sewage are converted to VFAs by facultative anaerobic bacteria, and reflux is dirty
The polyP bacteria that mud is brought into decomposes intracorporal poly- phosphorus, and sewage enters anoxic zone by water hole, and denitrifying bacteria just utilizes mixed liquor
The organic matter to flow back in the nitrate brought into and water inlet carries out denitrification denitrogenation, and sewage is entered by No. two sewage conducts 17 later
Aerobic tank 5, into after aerobic tank 5, remaining degradable BOD in sewage is absorbed and utilized in polyP bacteria, is stored in main decomposition body
PHB generates energy and supplies itself growth and breeding, and the dissolution phosphorus in active absorption environment, and sewage passes through No. three sewage conducts 20 later
Into combination octagon inclined-tube sedimentation tank 6, mud-water separation is carried out, supernatant is entered as processing water by No. four sewage conducts 24
MBR membrane cisterna 7, precipitating sludge are scraped in sludge bucket 22 by lifting center drive mud-scraper 21, one of sludge in sludge bucket 22
Dividing through No.1 sludge conduction pipe 36 and No. two reflux anaerobic ponds 3 of sludge conduction pipes 37, another part is discharged as excess sludge,
Progress sewage is finally handled after sewage enters MBR membrane cisterna 7, and sewage passes through No. five sewage conducts 27 and No. six sewage conducts 29 later
Clear water reserviors 8 are discharged into, then clear water reserviors 8 are discharged use by No.1 water pipe 31.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of combination MBR sewage treatment unit, including collecting pit (1), conditioning tank (2), anaerobic pond (3), anoxic pond
(4), aerobic tank (5), combination octagon inclined-tube sedimentation tank (6), MBR membrane cisterna (7), clear water reserviors (8), it is characterised in that: the receipts
It is provided with garbage collection area (9) by Ji Chi (1), the collecting pit (1) is connected with conditioning tank (2), the conditioning tank by pipeline
(2) it is provided with No.1 liquid-level switch (10) in, No.1 liquid-level switch (10) side is fixedly installed with elevator pump (11), described
Elevator pump (11) water outlet is fixedly connected with No.1 sewage conduct (12), and No.1 sewage conduct (12) outlet is fixedly connected on
Anaerobic pond (3), anaerobic pond (3) the intake pool mouth are fixedly installed with fine fack (13), and anaerobic pond (3) bottom of pond is fixedly mounted
Have No.1 diving mixer (14), be provided with anoxic pond (4) by the anaerobic pond (3), the anaerobic pond (3) be provided with water hole with
Anoxic pond (4) connection, the anoxic pond (4) is interior to be provided with No. two liquid-level switches (15), and the liquid-level switch two sides are each solid
For Dingan County's dress there are two No. two diving mixers (16), the anoxic pond (4) is fixedly connected with No. two sewage conducts (17), and described two
It is fixedly installed with pumping motor (18) on number sewage conduct (17), No. two sewage conducts (17) connect with aerobic tank (5), institute
It states aerobic tank (5) and is fixedly connected with No.1 emptying pipeline (19), the aerobic tank (5) is fixedly connected with No. three sewage conducts
(20), No. three sewage conducts (20) are connected to octagon inclined-tube sedimentation tank (6) are combined, the combination octagon tube settling
It is fixedly installed with inclined tube (52) inside pond (6), combination octagon inclined-tube sedimentation tank (6) center is fixedly installed with center driving
Mud scraper (21), lifting center drive mud-scraper (21) lower part are provided with sludge bucket (22), the combination octagon tube settling
Pond (6) is provided with water outlet triangle overflow weir (23), and the water outlet triangle overflow weir (23) is fixedly installed with No. four sewage conducts
(24), No. four sewage conducts (24) are connected with three component branch pipes (25), and each branch pipe (25) end is connected with MBR
Membrane cisterna (7), the MBR membrane cisterna (7) are internally provided with two groups of MBR processing instruments (26), are provided with three by the MBR processing instrument (26)
Number liquid-level switch (54), the MBR membrane cisterna (7) are connected with No. two emptying pipelines (53), and the MBR processing instrument (26) is fixed to be connected
No. five sewage conducts (27) are connected to, No. five sewage conducts (27) are fixedly connected with suction pump (28), the suction pump (28)
Outlet is fixedly connected with No. six sewage conducts, and No. six sewage conducts are fixedly connected on the clear water reserviors (8), the clear water reserviors
(8) No. four liquid-level switches (30) are provided in, the clear water reserviors (8) are fixedly connected with No.1 treated water conduit (31), the No.1
High mountain pond force (forcing) pump (32) is fixedly installed on treated water conduit (31).
2. a kind of combination MBR sewage treatment unit according to claim 1, it is characterised in that: the aerobic tank (5)
It is inside provided with aeration stick (33), the aeration stick (33) is connected with gas conduit (34), gas conduit (34) other end point
It is not connect with three groups of MBR processing instruments (26), is connected with Roots blower (35) in the middle part of the gas conduit (34).
3. a kind of combination MBR sewage treatment unit according to claim 1, it is characterised in that: the sludge bucket
(22) it is connected with No.1 sludge conduction pipe (36), is fixedly connected with sludge reflux valve on the No.1 sludge conduction pipe (36)
(51), No.1 sludge conduction pipe (36) end is connected separately with No. two sludge conduction pipes (37) and No. three sludge conduction pipes
(38), No. two sludge conduction pipes (37) connect with the fine fack (13), No. three sludge conduction pipes (38) with it is described
MBR membrane cisterna (7) is connected to, and is provided with MBR reflux pump (39) on No. three sludge conduction pipes (38).
4. a kind of combination MBR sewage treatment unit according to claim 3, it is characterised in that: No. two sludge
No. four sludge conduction pipes (40) are provided in the middle part of conduction pipe (37), No. four sludge conduction pipes (40) are communicated with sludge concentration tank
(41), No. five liquid-level switches (42) are provided in the sludge concentration tank (41), the sludge concentration tank (41) is fixedly connected with
Treatment of Sludge pipe (43) is fixedly installed with sludge screw pump (44) on the Treatment of Sludge pipe (43), the Treatment of Sludge pipe
(43) it is connected with sludge filter press (45), flocculant addition instrument (46) is connected on the Treatment of Sludge pipe (43).
5. a kind of combination MBR sewage treatment unit according to claim 1, it is characterised in that: No. six sewage
It is connected with fungicide addition instrument (47) on pipeline, is connected with No. two treated water conduits (48), institute on No. five sewage conducts (27)
It states No. two treated water conduits (48) to be connected with back suction water tank (49), is fixedly connected with back suction water on No. two treated water conduits (48)
It pumps (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820885145.8U CN208577593U (en) | 2018-06-08 | 2018-06-08 | A kind of combination MBR sewage treatment unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820885145.8U CN208577593U (en) | 2018-06-08 | 2018-06-08 | A kind of combination MBR sewage treatment unit |
Publications (1)
| Publication Number | Publication Date |
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| CN208577593U true CN208577593U (en) | 2019-03-05 |
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ID=65507720
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820885145.8U Expired - Fee Related CN208577593U (en) | 2018-06-08 | 2018-06-08 | A kind of combination MBR sewage treatment unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN208577593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928497A (en) * | 2019-04-15 | 2019-06-25 | 湖南中拓环境工程有限公司 | A kind of compound anoxic pond of modified form up-flow |
-
2018
- 2018-06-08 CN CN201820885145.8U patent/CN208577593U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928497A (en) * | 2019-04-15 | 2019-06-25 | 湖南中拓环境工程有限公司 | A kind of compound anoxic pond of modified form up-flow |
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| CF01 | Termination of patent right due to non-payment of annual fee |