CN208586083U - A kind of environment-friendly type urban wastewater treatment device - Google Patents
A kind of environment-friendly type urban wastewater treatment device Download PDFInfo
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- CN208586083U CN208586083U CN201821157623.XU CN201821157623U CN208586083U CN 208586083 U CN208586083 U CN 208586083U CN 201821157623 U CN201821157623 U CN 201821157623U CN 208586083 U CN208586083 U CN 208586083U
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Abstract
The utility model discloses a kind of environment-friendly type urban wastewater treatment devices, air-blowing room is arranged in device noumenon lower part, No.1 motor is fixedly connected on the left of device noumenon lower end, No.1 motor top is rotatablely connected crankshaft, crankshaft passes through drum gas chamber sidewall and therewith bearing seal rotation connection, fitting connecting rod left end in the middle part of crankshaft, connecting rod right end is rotatablely connected piston plate, piston plate edge seal is slidably connected air-blowing chamber interior walls, aeration plate is arranged in air-blowing room upper end, and aeration plate passes through check valve with air inlet and is connected to air-blowing chamber interior.The device drives piston plate back and forth to move left and right and blasts air to the inside of device noumenon by crankshaft using connecting rod, crankshaft passes through chain-driving aeration plate rotation aeration simultaneously, so that bubble is spread around under the action of the centrifugal force, increase and is connect with the contact surface of aqueous, and the screw rod of reciprocal positive and negative rotation drives No. two rack-plates back and forth to move left and right, it also moves up and down while No. two rack-plates back and forth move left and right, the floating flocculate that aeration generates is driven out of from removal of impurities pipe.
Description
Technical field
The utility model relates to a kind of sewage-treatment plant, specifically a kind of environment-friendly type urban wastewater treatment device.
Background technique
With the development of industrialization, the water pollution situation in cities and towns is increasingly severe, and urban wastewater treatment is also brought into schedule.
Sewage in cities and towns is in preliminary treatment mostly by being contacted with to the methods of Aeration in the water or mechanical agitation increase water with air
Area to exchange gaseous material and remove the method for treating water of volatile materials in water removal, or escapes gas from water, such as removes
The pernicious gases such as the stink or carbon dioxide of water and hydrogen sulfide;Or dissolve in oxygen in water, to improve dissolved oxygen concentration, reaches and remove
Iron, demanganization or the purpose for promoting aerobe degradation of organic substances.
The drugs such as flocculant are also put into part of contaminated water treatment process reach impurity flocculate effect, but at existing sewage
Equipment is managed mostly without aeration and flocculate cleaning efficacy, often floats a thick layer flocculate on the upper layer of equipment,
By manually rushing, flocculate can just be continued with, and be inconvenient.
Utility model content
The purpose of this utility model is to provide a kind of environment-friendly type urban wastewater treatment devices, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the utility model provides the following technical solutions:
A kind of environment-friendly type urban wastewater treatment device, including device noumenon, No.1 motor, air-blowing room, aeration plate, No. two electricity
Air-blowing room is arranged in machine, screw rod and cage plate, described device body lower part, is fixedly connected with No.1 motor on the left of device noumenon lower end, and one
Number motor top is rotatablely connected crankshaft, crankshaft pass through drum gas chamber sidewall and therewith bearing seal be rotatablely connected, crankshaft middle part fitting
Connecting rod left end, connecting rod right end are rotatablely connected piston plate, and piston plate edge seal is slidably connected air-blowing chamber interior walls, and air-blowing room lower end
Air inlet is set, and aeration plate is arranged in air-blowing room upper end, and aeration plate passes through check valve with air inlet and is connected to air-blowing chamber interior；It is described
Crankshaft upper end is connect with aeration plate by chain, and liquid discharging tube is arranged on the right side of device noumenon lower part；
No. two motors are fixedly connected on the right side of described device ontology upper end, No. two motor lower ends are rotatablely connected semicircle bevel gear,
Bevel gear is respectively arranged at left and right sides of semicircle bevel gear, bevel gear is fixedly connected on the right side of screw rod, and screw both end is distinguished bearing and turned
Dynamic attachment device inner body wall, and wire rod thread connection sleeve plate；The cage plate two sides are rotatablely connected first gear, the first tooth respectively
It takes turns upper end and engages No.1 rack-plate, the fixed device noumenon upper wall of No.1 rack-plate, cage plate lower end is fixedly connected with riser；The riser
Rotated down connects second gear, and by synchronous band connection between first gear and second gear, second gear engages the second tooth
Batten, the second rack-plate are slidably connected sliding slot, and sliding slot is set to riser side, and device noumenon right side wall is provided with removal of impurities pipe.
As a further solution of the present invention: being connected to water injection pipe on the left of described device body upper part.
The riser two sides offer through-hole respectively as a further solution of the present invention,.
Fitting guide post in the through-hole as a further solution of the present invention, guide post fixed connection apparatus ontology.
Stopcock is rotatablely connected in the middle part of the liquid discharging tube as a further solution of the present invention,.
Described device ontology lower end two sides have been respectively fixedly connected with supporting leg as a further solution of the present invention,.
Described device ontology lower end two sides are rotatably connected to idler wheel respectively as a further solution of the present invention,.
It the No.1 motor and the equal wire connecting power of No. two motors and opens as a further solution of the present invention,
It closes.
Compared with prior art, the utility model has the beneficial effects that the device utilizes connecting rod band piston by crankshaft
Plate, which is back and forth moved left and right, blasts air to the inside of device noumenon, while crankshaft is aerated by the rotation of chain-driving aeration plate, so that
Bubble is spread around under the action of the centrifugal force, is increased and is connect with the contact surface of aqueous, and the screw rod of reciprocal positive and negative rotation drives No. two
Rack-plate back and forth moves left and right, and also moves up and down while No. two rack-plates back and forth move left and right, the floating that aeration is generated
Flocculate is driven out of from removal of impurities pipe.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of environment-friendly type urban wastewater treatment device.
Fig. 2 is the enlarged drawing of first gear and No. two tooth plates in environment-friendly type urban wastewater treatment device.
Fig. 3 is the right view of first gear and No. two tooth plates in environment-friendly type urban wastewater treatment device.
In figure: 1- device noumenon；2- No.1 motor；3- crankshaft；4- connecting rod；5- piston plate；6- air-blowing room；7- air inlet；
8- chain；9- aeration plate；10- water injection pipe；11- liquid discharging tube；12- removal of impurities pipe；No. bis- motors of 13-；14- semicircle bevel gear；15- cone
Gear；16- screw rod；17- cage plate；18- first gear；19- No.1 rack-plate；20- riser；21- guide post；22- synchronous belt；23-
Sliding slot；24- second gear；No. bis- rack-plates of 25-.
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.
Embodiment 1
Please refer to Fig. 1~3, in the utility model embodiment, a kind of environment-friendly type urban wastewater treatment device, including device sheet
Body 1, No.1 motor 2, air-blowing room 6,9, No. two motors 13 of aeration plate, screw rod 16 and cage plate 17；The setting of 1 lower part of described device ontology
Air-blowing room 6,1 lower end of device noumenon left side are fixedly connected with No.1 motor 2, and 2 top of No.1 motor is rotatablely connected crankshaft 3, and crankshaft 3 is worn
Cross 6 side wall of air-blowing room and therewith bearing seal rotation connection, 3 middle part fitting connecting rod of crankshaft, 4 left end, the rotation connection of 4 right end of connecting rod
Piston plate 5,5 edge seal of piston plate are slidably connected 6 inner wall of air-blowing room, and 6 lower end of air-blowing room is arranged air inlet 7, on air-blowing room 6
End setting aeration plate 9, aeration plate 9 are connected to inside air-blowing room 6 by check valve with air inlet 7, and No.1 motor 2 is powered on band
Dynamic crankshaft 3 rotates, and crankshaft 3 drives piston plate 5 back and forth to move left and right and blasts air to the inside of device noumenon 1 using connecting rod 4；It is described
3 upper end of crankshaft is connect with aeration plate 9 by chain 8, and liquid discharging tube 11 is arranged on the right side of 1 lower part of device noumenon, turns in the middle part of liquid discharging tube 11
Dynamic connection stopcock, and 1 upper left-hand of device noumenon is connected to water injection pipe 10, injects sewage into device noumenon 1 by water injection pipe 10,
The aqueous in device noumenon 1 can be discharged from liquid discharging tube 11 for rotating opening stopcock, and the crankshaft 3 of rotation is by chain 8 with pneumatic aeration
The rotation aeration of disk 9 increases and connects with the contact surface of aqueous so that bubble is spread around under the action of the centrifugal force.
No. two motors 13 are fixedly connected on the right side of 1 upper end of described device ontology, No. two 13 lower ends of motor are rotatablely connected half-conical
Gear 14 is respectively arranged with bevel gear 15 at left and right sides of semicircle bevel gear 14, and 14 half of semicircle bevel gear half with teeth is anodontia,
Toothed portion engages bevel gear 15, and bevel gear 15 is fixedly connected with 16 right side of screw rod, and bearing rotation connection dress is distinguished at 16 both ends of screw rod
1 inner wall of ontology is set, and screw rod 16 is threadedly coupled cage plate 17, No.1 motor 2 and No. two equal wire connecting powers of motor 13 and switch,
No. two motors 13, which are powered on, to be driven semicircle bevel gear 14 to rotate and then the bevel gear 15 of the left and right sides is driven to drive screw rod 16 past
The screw rod 16 of multiple positive and negative rotation, reciprocal positive and negative rotation drives cage plate 17 back and forth to move left and right；17 two sides of cage plate are rotatablely connected respectively
No.1 rack-plate 19, fixed 1 upper wall of device noumenon of No.1 rack-plate 19, cage plate are engaged in first gear 18,18 upper end of first gear
17 lower ends are fixedly connected with riser 20, and 20 two sides of riser offer through-hole respectively, and fitting guide post 21 in through-hole, guide post 21 is fixedly connected
Device noumenon 1, the cage plate 17 moved left and right drive first gear 18 to rotate while moving under the effect of No.1 rack-plate 19；
20 rotated down of riser connects second gear 24, is connected between first gear 18 and second gear 24 by synchronous belt 22,
Second gear 24 engages the second rack-plate 25, and the second rack-plate 25 is slidably connected sliding slot 23, and sliding slot 23 is set to 20 side of riser,
1 right side wall of device noumenon is provided with removal of impurities pipe 12, meanwhile, 1 lower end two sides of device noumenon are rotatably connected to idler wheel respectively, work as cage plate
17 when moving to right, and first gear 18 rotates counterclockwise under the effect of No.1 rack-plate 19, and first gear 18 is driven by synchronous belt 22
No. two gears 24 are followed and are rotated counterclockwise, and No. two gears 24 drive No. two 25 slide downwards of rack-plate, i.e. No. two rack-plates 25 1
It moves down, is caught up with the flocculate for the floating that sewage is generated through aeration to the right by No. two rack-plates 25, finally on one side while moving to right
It is discharged from removal of impurities pipe 12, when cage plate 17 moves to left, No. two rack-plates 25 are moved up, and are avoided the floating flocculate at rear portion to the left side
It catches up with.
Embodiment 2
Please refer to Fig. 1~3, in the utility model embodiment, a kind of environment-friendly type urban wastewater treatment device, including device sheet
Body 1, No.1 motor 2, air-blowing room 6,9, No. two motors 13 of aeration plate, screw rod 16 and cage plate 17；The setting of 1 lower part of described device ontology
Air-blowing room 6,1 lower end of device noumenon left side are fixedly connected with No.1 motor 2, and 2 top of No.1 motor is rotatablely connected crankshaft 3, and crankshaft 3 is worn
Cross 6 side wall of air-blowing room and therewith bearing seal rotation connection, 3 middle part fitting connecting rod of crankshaft, 4 left end, the rotation connection of 4 right end of connecting rod
Piston plate 5,5 edge seal of piston plate are slidably connected 6 inner wall of air-blowing room, and 6 lower end of air-blowing room is arranged air inlet 7, on air-blowing room 6
End setting aeration plate 9, aeration plate 9 are connected to inside air-blowing room 6 by check valve with air inlet 7, and No.1 motor 2 is powered on band
Dynamic crankshaft 3 rotates, and crankshaft 3 drives piston plate 5 back and forth to move left and right and blasts air to the inside of device noumenon 1 using connecting rod 4；It is described
3 upper end of crankshaft is connect with aeration plate 9 by chain 8, and liquid discharging tube 11 is arranged on the right side of 1 lower part of device noumenon, turns in the middle part of liquid discharging tube 11
Dynamic connection stopcock, and 1 upper left-hand of device noumenon is connected to water injection pipe 10, injects sewage into device noumenon 1 by water injection pipe 10,
The aqueous in device noumenon 1 can be discharged from liquid discharging tube 11 for rotating opening stopcock, and the crankshaft 3 of rotation is by chain 8 with pneumatic aeration
The rotation aeration of disk 9 increases and connects with the contact surface of aqueous so that bubble is spread around under the action of the centrifugal force.
No. two motors 13 are fixedly connected on the right side of 1 upper end of described device ontology, No. two 13 lower ends of motor are rotatablely connected half-conical
Gear 14 is respectively arranged with bevel gear 15 at left and right sides of semicircle bevel gear 14, and 14 half of semicircle bevel gear half with teeth is anodontia,
Toothed portion engages bevel gear 15, and bevel gear 15 is fixedly connected with 16 right side of screw rod, and bearing rotation connection dress is distinguished at 16 both ends of screw rod
1 inner wall of ontology is set, and screw rod 16 is threadedly coupled cage plate 17, No.1 motor 2 and No. two equal wire connecting powers of motor 13 and switch,
No. two motors 13, which are powered on, to be driven semicircle bevel gear 14 to rotate and then the bevel gear 15 of the left and right sides is driven to drive screw rod 16 past
The screw rod 16 of multiple positive and negative rotation, reciprocal positive and negative rotation drives cage plate 17 back and forth to move left and right；17 two sides of cage plate are rotatablely connected respectively
No.1 rack-plate 19, fixed 1 upper wall of device noumenon of No.1 rack-plate 19, cage plate are engaged in first gear 18,18 upper end of first gear
17 lower ends are fixedly connected with riser 20, and 20 two sides of riser offer through-hole respectively, and fitting guide post 21 in through-hole, guide post 21 is fixedly connected
Device noumenon 1, the cage plate 17 moved left and right drive first gear 18 to rotate while moving under the effect of No.1 rack-plate 19；
20 rotated down of riser connects second gear 24, is connected between first gear 18 and second gear 24 by synchronous belt 22,
Second gear 24 engages the second rack-plate 25, and the second rack-plate 25 is slidably connected sliding slot 23, and sliding slot 23 is set to 20 side of riser,
1 right side wall of device noumenon is provided with removal of impurities pipe 12, meanwhile, 1 lower end two sides of device noumenon have been respectively fixedly connected with supporting leg, work as cage plate
17 when moving to right, and first gear 18 rotates counterclockwise under the effect of No.1 rack-plate 19, and first gear 18 is driven by synchronous belt 22
No. two gears 24 are followed and are rotated counterclockwise, and No. two gears 24 drive No. two 25 slide downwards of rack-plate, i.e. No. two rack-plates 25 1
It moves down, is caught up with the flocculate for the floating that sewage is generated through aeration to the right by No. two rack-plates 25, finally on one side while moving to right
It is discharged from removal of impurities pipe 12, when cage plate 17 moves to left, No. two rack-plates 25 are moved up, and are avoided the floating flocculate at rear portion to the left side
It catches up with.
It is rotated the working principle of the utility model is: No.1 motor 2 is powered on band dynamic crankshaft 3, crankshaft 3 utilizes connecting rod 4
It drives piston plate 5 back and forth to move left and right and blasts air to the inside of device noumenon 1, injected by water injection pipe 10 into device noumenon 1
The aqueous in device noumenon 1 can be discharged from liquid discharging tube 11 for sewage, rotating opening stopcock, and the crankshaft 3 of rotation is driven by chain 8
The rotation aeration of aeration plate 9 increases and connects with the contact surface of aqueous so that bubble is spread around under the action of the centrifugal force, No. two electricity
Machine 13, which is powered on, to be driven semicircle bevel gear 14 to rotate and then the bevel gear 15 of the left and right sides is driven to drive screw rod 16 reciprocal positive and negative
Turn, the screw rod 16 of reciprocal positive and negative rotation drives cage plate 17 back and forth to move left and right, and the cage plate 17 moved left and right drives first gear 18 to exist
No.1 rack-plate 19 rotates while moving under acting on, and when cage plate 17 moves to right, first gear 18 is made in No.1 rack-plate 19
It is rotated counterclockwise under, first gear 18 drives No. two gears 24 to follow and rotates counterclockwise by synchronous belt 22, No. two gears 24
No. two 25 slide downwards of rack-plate are driven, i.e. No. two rack-plates 25 move down while moving to right, and pass through No. two rack-plates 25
The flocculate for the floating that sewage is generated through aeration is caught up with to the right, is finally discharged from removal of impurities pipe 12, when cage plate 17 moves to left, No. two teeth
Batten 25 moves up, and avoids catching up with the floating flocculate at rear portion to the left side.
It should be strongly noted that motor is the application of the prior art in the application, aeration plate rotation increases air and water
The contact area of liquid, meanwhile, the flocculate that No. two rack-plates moved up and down while transverse shifting generate aeration is from removing
The discharge of miscellaneous pipe is the innovative point of the application, efficiently solve existing sewage disposal device mostly and only have aeration and without
The problem of removal of impurities.
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 (8)
1. a kind of environment-friendly type urban wastewater treatment device, including device noumenon (1), No.1 motor (2), air-blowing room (6), aeration plate
(9), No. two motors (13), screw rod (16) and cage plate (17), which is characterized in that air-blowing room is arranged in described device ontology (1) lower part
(6), it is fixedly connected No.1 motor (2) on the left of device noumenon (1) lower end, No.1 motor (2) top is rotatablely connected crankshaft (3), bent
Axis (3) passes through air-blowing room (6) side wall and therewith bearing seal rotation connection, fitting connecting rod (4) left end in the middle part of crankshaft (3), connecting rod
(4) right end rotation connection piston plate (5), piston plate (5) edge seal are slidably connected air-blowing room (6) inner wall, and under air-blowing room (6)
Aeration plate (9) are arranged in end setting air inlet (7), air-blowing room (6) upper end, and aeration plate (9) and air inlet (7) are connected by check valve
Logical air-blowing room (6) are internal；Crankshaft (3) upper end is connect with aeration plate (9) by chain (8), on the right side of device noumenon (1) lower part
It is arranged liquid discharging tube (11)；
No. two motors (13) are fixedly connected on the right side of described device ontology (1) upper end, No. two motor (13) lower ends are rotatablely connected semicircle
Bevel gear (14), semicircle bevel gear (14) left and right sides are respectively arranged with bevel gear (15), and bevel gear (15) is fixedly connected with screw rod
(16) right side, bearing rotary connecting device ontology (1) inner wall is distinguished at screw rod (16) both ends, and screw rod (16) is threadedly coupled cage plate
(17)；Cage plate (17) two sides are rotatablely connected first gear (18) respectively, and No.1 rack-plate is engaged in first gear (18) upper end
(19), fixed device noumenon (1) upper wall of No.1 rack-plate (19), cage plate (17) lower end is fixedly connected with riser (20)；The riser
(20) rotated down connection second gear (24), between first gear (18) and second gear (24) even by synchronous belt (22)
It connects, second gear (24) engages the second rack-plate (25), and the second rack-plate (25) is slidably connected sliding slot (23), sliding slot (23) setting
In riser (20) side, device noumenon (1) right side wall is provided with removal of impurities pipe (12).
2. a kind of environment-friendly type urban wastewater treatment device according to claim 1, which is characterized in that described device ontology
(1) upper left-hand connection water injection pipe (10).
3. a kind of environment-friendly type urban wastewater treatment device according to claim 1, which is characterized in that the riser (20) two
Side offers through-hole respectively.
4. a kind of environment-friendly type urban wastewater treatment device according to claim 3, which is characterized in that fitting in the through-hole
Guide post (21), guide post (21) fixed connection apparatus ontology (1).
5. a kind of environment-friendly type urban wastewater treatment device according to claim 1, which is characterized in that the liquid discharging tube (11)
Middle part is rotatablely connected stopcock.
6. a kind of environment-friendly type urban wastewater treatment device according to claim 1, which is characterized in that described device ontology
(1) lower end two sides have been respectively fixedly connected with supporting leg.
7. a kind of environment-friendly type urban wastewater treatment device according to claim 1, which is characterized in that described device ontology
(1) lower end two sides are rotatably connected to idler wheel respectively.
8. -7 any a kind of environment-friendly type urban wastewater treatment device according to claim 1, which is characterized in that the No.1
Motor (2) and No. two motors (13) wire connecting power and switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821157623.XU CN208586083U (en) | 2018-07-18 | 2018-07-18 | A kind of environment-friendly type urban wastewater treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821157623.XU CN208586083U (en) | 2018-07-18 | 2018-07-18 | A kind of environment-friendly type urban wastewater treatment device |
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| CN208586083U true CN208586083U (en) | 2019-03-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109987697A (en) * | 2019-04-02 | 2019-07-09 | 广州飞腾科技研究有限公司 | A kind of walking energy conservation and environmental protection sewage-treatment plant |
| CN111320261A (en) * | 2020-03-12 | 2020-06-23 | 杨淑桃 | Sewage treatment is with from oxygenation type microbiological treatment pond |
| CN111533240A (en) * | 2020-05-08 | 2020-08-14 | 袁思静 | Sewage treatment method and system |
| CN111925007A (en) * | 2020-07-30 | 2020-11-13 | 福建中永润城建设工程有限公司 | Automatic circular supply device and method for garden ecological water resources |
| CN111995165A (en) * | 2020-06-05 | 2020-11-27 | 安徽工程大学 | Sewage treatment of municipal administration sewage pipe network purifies integrative device |
| CN114425259A (en) * | 2022-02-18 | 2022-05-03 | 山东新泽辉新材料科技有限公司 | Synthetic preparation facilities of high accuracy magnesium hydrate fire retardant |
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2018
- 2018-07-18 CN CN201821157623.XU patent/CN208586083U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109987697A (en) * | 2019-04-02 | 2019-07-09 | 广州飞腾科技研究有限公司 | A kind of walking energy conservation and environmental protection sewage-treatment plant |
| CN111320261A (en) * | 2020-03-12 | 2020-06-23 | 杨淑桃 | Sewage treatment is with from oxygenation type microbiological treatment pond |
| CN111533240A (en) * | 2020-05-08 | 2020-08-14 | 袁思静 | Sewage treatment method and system |
| CN111995165A (en) * | 2020-06-05 | 2020-11-27 | 安徽工程大学 | Sewage treatment of municipal administration sewage pipe network purifies integrative device |
| CN111995165B (en) * | 2020-06-05 | 2022-03-29 | 安徽工程大学 | Sewage treatment of municipal administration sewage pipe network purifies integrative device |
| CN111925007A (en) * | 2020-07-30 | 2020-11-13 | 福建中永润城建设工程有限公司 | Automatic circular supply device and method for garden ecological water resources |
| CN114425259A (en) * | 2022-02-18 | 2022-05-03 | 山东新泽辉新材料科技有限公司 | Synthetic preparation facilities of high accuracy magnesium hydrate fire retardant |
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