CN106915783A - A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides - Google Patents
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides Download PDFInfo
- Publication number
- CN106915783A CN106915783A CN201710259267.6A CN201710259267A CN106915783A CN 106915783 A CN106915783 A CN 106915783A CN 201710259267 A CN201710259267 A CN 201710259267A CN 106915783 A CN106915783 A CN 106915783A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- module
- seal cover
- plate unit
- combined type
- 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.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- 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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Sewage (AREA)
Abstract
The invention discloses a kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides, including seal cover board main body, seal cover board main body is spliced successively by multigroup cover plate unit；Each group of cover plate unit is made up of three kinds of different modules, is closely connected by pasting female connector pipe and independent connecting insertion between adjacent block.It is an object of the invention to provide simple structure, a kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides easy to assembly, its effusion that can not only reduce toxic and harmful prevents the harm to environment and human body.
Description
Technical field
The present invention relates to the deodorant antipollution equipment technical field of sewage treatment plant, specifically a kind for the treatment of tank group
The symmetrical inclined flat seal cover plate in box-like flat-top both sides.
Background technology
In social production practice, the moment can all produce various sanitary sewages, such as resident living sewage and industrial wastewater
Etc..There is substantial amounts of organic pollution in these waste water, it can produce big during storage, conveying and biochemical treatment
Poisonous and hazardous gas is measured, these gases fly away in atmosphere, not only pollute the environment, while to the human body of the resident that around lives
Health can also produce certain harm.
Traditionally, the cesspool span of each sewage treatment plant is inconsistent, is generally all consolidating using the lid of a pond one
Mould-fixed, this pattern can cause the specification of pattern mould will to be remake according to corresponding requirement each time, cause cost
Compare high.Simultaneously, it is contemplated that pond width,
All it is traditionally the template for using dome-shaped large span, and needs to increase reinforcement, not only results in sealing space
Increase, increase cost, while can also influence closure to help the utilization rate of side space（Other components cannot on top be laid）.
The content of the invention
It is an object of the invention to provide simple structure, a kind for the treatment of tank combined type flat-top both sides pair easy to assembly
Claim inclined flat seal cover plate, its effusion that can not only reduce toxic and harmful prevents the harm to environment and human body.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides, including seal cover board main body and sealing
Side seal board, it is characterised in that：Seal cover board main body is spliced successively by multigroup cover plate unit；Each group of cover plate unit is by three kinds
Different module compositions, is closely connected between adjacent block by sleeve pipe and independent connecting insertion.
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides as described above, its feature exists
In：Each group of cover plate unit two long side is respectively equipped with sealing straight flange and sealing flanging, between two adjacent groups cover plate unit
Nature sealing is mutually compressed by the sealing flanging on the sealing straight flange and another group of cover plate unit on a seal cover board.
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides as described above, its feature exists
In：Described sleeve pipe be hidden in it where module in, sleeve pipe outer end extends to module docking end face where it and is inserted for connection with being formed
The interface that pipe is inserted in, connecting insertion two ends are tightly packed in two sleeve pipes being mutually butted in module respectively.
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides as described above, its feature exists
In：Connected by multiple independent connecting insertions between the adjacent block of each group of cover plate unit, correspondence in each module
It is provided with the multiple sleeve pipes coordinated with above-mentioned multiple connecting insertions.
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides as described above, its feature exists
In：Reinforcement cutting hole is respectively equipped with the adjacent block of each group of cover plate unit, respectively by only between each pair of connection module
Vertical reinforcement cutting reinforcement by connection, it is slotting for strengthening cutting to be formed that reinforcement cutting outer end of hole extends to module docking end face where it
The opening for entering, strengthens cutting hole two ends and is tightly packed in respectively in the two reinforcement cutting holes being mutually butted in module.
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides as described above, its feature exists
In：Three kinds of modules on each group of cover plate unit include outer framework, and glass epoxy, stainless steel plate are provided with outer framework
Or sunlight board.
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides as described above, its feature exists
In：The each group of cover plate unit two ends are connected with by setscrew and are fixed on pond body end wall for this group of cover plate unit
On angle steel.
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides as described above, its feature exists
In：Self-tapping screw locking connection between the sealing side seal board and seal cover board body rim.
A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides as described above, its feature exists
In：The seal cover board main body is provided with access hole.
A kind of cover plate unit on seal cover board, it is characterised in that：Cover plate unit is made up of three kinds of different modules, adjacent
Be closely connected by sleeve pipe and independent connecting insertion between module, described sleeve pipe be hidden in it where module in, sleeve pipe
Outer end extends to module where it and docks end face to form the interface being inserted in for connecting insertion, and connecting insertion two ends are tightly packed in respectively
Two are mutually butted in the sleeve pipe in module.
It is more of the invention compared with prior art to have prominent effect：
1st, seal cover board main body is spliced successively by multigroup cover plate unit；Each group of cover plate unit is by three kinds of different module groups
Into being closely connected by sleeve pipe and independent connecting insertion between adjacent block.The structure design simple structure, each group
Seal cover board can individually be dismantled and installed, and be easy to operation, easy to assembly, can be preferable with Reusability, reappearance, while transport
It is very convenient.
2nd, using Modularization assembled structure design, individual module has simple structure to the present invention, and area is small, it is convenient increase or
Reduce the area of cover plate main body, it is adaptable to variously-shaped, span pond body, convenient sewage treatment plant's pond body group with all size
Dress is used, and the fixed mode defect of the lid of a pond one for causing in the prior art is overcome, while also overcome conventional cover plate cannot
The problem of recycling, the cover plate can carry out artificial or molding batch production, not only in the form of module assembled to module
Operating efficiency is improve, while the cost manufactured can also be greatly lowered, is increased economic efficiency.
3rd, the present invention is in the unitary construction of flat-top both sides symmetric trapezium shape, and closure is good, and span is big, space availability ratio is high；
Outward appearance is brief, attractive in appearance, convenient maintenance；For arch seal cover board, the formed space of present invention sealing is relatively small,
Rate of air sucked in required can be reduced so as to reduce the energy consumption of operation.
4th, the present invention takes into full account the daily convenience checked and overhaul, and upset is provided with the corresponding site of cover plate main body
Formula or plug-type maintenance window, facilitate the maintenance of staff to check, to ensure the normal operation of sewage disposal device.
5th, the present invention fully considers the Utilizing question of seal cover board superjacent air space, and top is the structure design of plane, is reduced
The height of cover plate main body, can comprehensively utilize cover plate main body superjacent air space, be conducive to the movement of cleaning equipment, be conducive to the present invention
Promote the use of.
Brief description of the drawings
Fig. 1 is embodiment of the present invention cover plate cellular construction schematic diagram.
Fig. 2 be Fig. 1 in a to structural representation.
Fig. 3 is top module plan.
Fig. 4 is standard module plan.
Fig. 5 is the structural representation that sleeve pipe and connecting insertion are disassembled.
Fig. 6 is one of sleeve pipe and connecting insertion assembly structure diagram.
Fig. 7 is the two of sleeve pipe and connecting insertion assembly structure diagram.
Fig. 8 is installation diagram before and after module.
Fig. 9 is the two groups of module installation diagrams in left and right.
Figure 10 is the sectional view in b directions in Fig. 9.
Figure 11 is the enlarged drawing of B in Figure 10.
Figure 12 is seal cover board assembling schematic diagram.
Specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11 and Figure 12：At a kind of sewage
The symmetrical inclined flat seal cover plate in reason pond combined type flat-top both sides, including seal cover board main body and sealing side seal board.Closure
Plate main body is spliced successively by multigroup cover plate unit 100.
In the application, each group of cover plate unit 100 is made up of three kinds of different modules, and three kinds of different modules are respectively top
Portion's module 1, module standard module 2 and bottom module 8, between top module 1 and module standard module 2, the phase of module standard module 2
It is closely connected by sleeve pipe 5 and independent connecting insertion 4 between mutually, between module standard module 2 and bottom module 8.
For convenience of docking, edge-to-edge is close to be close together between the adjacent block allowed on each group of cover plate unit 100, sleeve pipe
5 be hidden in it where module in, the outer end of sleeve pipe 5 extends to module where it and docks end face to form what is be inserted in for connecting insertion 5
Interface, the two ends of connecting insertion 4 are tightly packed in two sleeve pipes 5 being mutually butted in module respectively, assemble rear connecting insertion and are hidden in phase
In sleeve pipe 5 in adjacent two modules, be conducive to forming closely combination between two neighboring module.
For each group of stability of cover plate unit, in the application, between adjacent block can using multigroup sleeve pipe 5 and solely
Vertical connecting insertion 4 is closely connected.For example：Between top module 1 and module standard module 2, module standard module 2 it is mutual
Between, connected by multiple independent connecting insertions 4 between module standard module 2 and bottom module 8, top module 1, mould
The multiple sleeve pipes 5 coordinated with above-mentioned multiple connecting insertions 4 are correspondingly provided with block standard module 2 and bottom module 8.
To further enhance each group of fastness of cover plate unit 100, in the application, top module 1 and module standard mould
Between block 2, module standard module 2 be respectively equipped with reinforcement cutting hole each other, between module standard module 2 and bottom module 8
11, strengthen the outer end of cutting hole 11 and extend to module docking end face where it to be formed for strengthening the opening that cutting 3 is inserted.Top die
Between block 1 and module standard module 2, module standard module 2 each other, between module standard module 2 and bottom module 8 respectively
By the independent reinforcement by connection of reinforcement cutting 3, strengthen the two ends of cutting hole 11 and be tightly packed in two reinforcements being mutually butted in module respectively
In cutting hole 11.
In the application, top module 1, module standard module 2 and bottom module 8 on each group of cover plate unit 100 are wrapped
Outer framework is included, plate is provided with outer framework, plate can be glass epoxy, stainless steel plate or sunlight board.
For convenience of the connection with pond body, in the application, each group of two ends of cover plate unit 100 are connected with by setscrew
The angle steel on pond body end wall is fixed on for this group of cover plate unit.Between sealing side seal board and seal cover board body rim certainly
Tapping locking connection.The each group of long side of cover plate unit two is respectively equipped with sealing straight flange and sealing flanging, two adjacent groups cover plate
Between unit nature sealing is mutually compressed by the sealing flanging on the sealing straight flange and another group of cover plate unit on a seal cover board.
For convenience of overhauling, in the application, seal cover board main body is provided with plug-type access hole.
When the application is installed, according to the size of pond body span, assembling is adapted to multigroup cover plate unit of span, by every group of cover plate
Unit is covered in above the pond body of corresponding span, to prevent cover plate unit 100 from deforming, between the two ends of cover plate unit 100 and pond body
Positioned by fixed angle steel, in the present embodiment, angle steel is both sides orthogonal into angular strip steel.Using swollen during installation
Swollen screw locks angle steel and pond body, is fixed on the pool wall at pond body two ends with completing one group of cover plate unit 100.The like,
Multigroup cover plate unit 100 is fixed on the pool wall at pond body two ends.
In above-mentioned installation process, between two adjacent groups cover plate unit 100, the sealing flanging 7 of one group of cover plate unit 100 is inserted
Below the sealing straight flange 6 of another group of cover plate unit for having fixed so that between the abutting edge of two adjacent groups cover plate unit 100
Nature sealing is mutually compressed, the like, multigroup cover plate unit 100 is sequentially spliced to form the seal cover board for covering whole pond body
Main body.
After completing above-mentioned installation, corresponding side seal board 13 finally is used in pond body both sides, bottom is fixed using setscrew
In on the pool wall of both sides, the top of side seal board 13 using self-tapping screw and cover plate main body both sides sealing straight flange 6, seal flanging 7 and distinguish
It is fixed, that is, form the sealing covering of bed rearrangement pond body.
In the present embodiment, sleeve pipe 5 is metal tube, and sleeve pipe 5 is welded or pasted in the module where being connected on it, to keep module
The planarization on surface, can on that module open up groove, then in metal tube horizontal groove and will weld or paste connects and is fixed on
In module.
In the application, it is contemplated that the problem of sleet load during bad weather, can select the seal cover board of suitable thickness with
And the connecting insertion and sleeve pipe of suitable caliber and wall thickness, to ensure the steadiness of whole cover plate.Seal cover board, connecting insertion and set
The change of tube thickness does not influence the restriction of the application protection domain.
The above is only several preferred embodiments of the invention, any formal limitation is not made to the present invention, it is all
It is any simple modification, equivalent variations and the modification made to above example according to technical spirit of the invention, still falls within
The scope of protection of the invention.
Claims (10)
1. the symmetrical inclined flat seal cover plate in a kind for the treatment of tank combined type flat-top both sides, including seal cover board main body and close
Envelope side seal board, it is characterised in that：Seal cover board main body is spliced successively by multigroup cover plate unit；Each group of cover plate unit is by three
Different module compositions are planted, is closely connected by sleeve pipe and independent connecting insertion between adjacent block.
2. the symmetrical inclined flat seal cover plate in a kind for the treatment of tank combined type flat-top both sides according to claim 1,
It is characterized in that：Each group of cover plate unit two long side is respectively equipped with sealing straight flange and sealing flanging, two adjacent groups cover plate
Between unit nature sealing is mutually compressed by the sealing flanging on the sealing straight flange and another group of cover plate unit on a seal cover board.
3. the symmetrical inclined flat seal cover plate in a kind for the treatment of tank combined type flat-top both sides according to claim 1,
It is characterized in that：Described sleeve pipe be hidden in it where module in, sleeve pipe outer end extends to module where it and docks end face to be formed
For the interface that connecting insertion is inserted in, connecting insertion two ends are tightly packed in two sleeve pipes being mutually butted in module respectively.
4. a kind of symmetrical inclined flat seal lid in treatment tank combined type flat-top both sides according to claim 1 or 3
Plate, it is characterised in that：Connected by multiple independent connecting insertions between the adjacent block of each group of cover plate unit, respectively
The multiple sleeve pipes coordinated with above-mentioned multiple connecting insertions are correspondingly provided with module.
5. a kind of symmetrical inclined flat seal lid in treatment tank combined type flat-top both sides according to claim 1 or 3
Plate, it is characterised in that：Reinforcement cutting hole is respectively equipped with the adjacent block of each group of cover plate unit, between each pair of connection module
Respectively by independent reinforcement cutting reinforcement by connection, strengthen cutting outer end of hole and extend to module docking end face where it to form confession
Strengthen the opening of cutting insertion, strengthen cutting hole two ends and be tightly packed in respectively in the two reinforcement cutting holes being mutually butted in module.
6. the symmetrical inclined flat seal cover plate in a kind for the treatment of tank combined type flat-top both sides according to claim 1,
It is characterized in that：Three kinds of modules on each group of cover plate unit include outer framework, be provided with outer framework glass epoxy,
Stainless steel plate or sunlight board.
7. the symmetrical inclined flat seal cover plate in a kind for the treatment of tank combined type flat-top both sides according to claim 1,
It is characterized in that：The each group of cover plate unit two ends are connected with by setscrew and are fixed on pond body for this group of cover plate unit
Angle steel on end wall.
8. the symmetrical inclined flat seal cover plate in a kind for the treatment of tank combined type flat-top both sides according to claim 1,
It is characterized in that：Self-tapping screw locking connection between the sealing side seal board and seal cover board body rim.
9. the symmetrical inclined flat seal cover plate in a kind for the treatment of tank combined type flat-top both sides according to claim 1,
It is characterized in that：The seal cover board main body is provided with access hole.
10. the cover plate unit on the seal cover board described in a kind of claim 1, it is characterised in that：Cover plate unit is by three kinds of differences
Module composition, be closely connected by sleeve pipe and independent connecting insertion between adjacent block, described sleeve pipe is hidden in its institute
Module in, sleeve pipe outer end extends to module docking end face where it to form the interface being inserted in for connecting insertion, and connection is inserted
Pipe two ends are tightly packed in two sleeve pipes being mutually butted in module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710259267.6A CN106915783A (en) | 2017-04-20 | 2017-04-20 | A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710259267.6A CN106915783A (en) | 2017-04-20 | 2017-04-20 | A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106915783A true CN106915783A (en) | 2017-07-04 |
Family
ID=59568136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710259267.6A Pending CN106915783A (en) | 2017-04-20 | 2017-04-20 | A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106915783A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483536A (en) * | 2018-06-02 | 2018-09-04 | 安徽海康药业有限责任公司 | A kind of recovery method of sewage disposal device and methane gas with floating roof |
| CN108824629A (en) * | 2018-08-07 | 2018-11-16 | 富威蜂窝科技（常州）有限公司 | Novel wastewater disposal basin floating head plate |
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| CN201040753Y (en) * | 2007-05-29 | 2008-03-26 | 王洪凯 | Methane fermentation pool cover and square methane tank |
| KR101224524B1 (en) * | 2012-10-25 | 2013-01-21 | 주식회사 지이글로벌 | System for heat insulating covering of bio reactor for public sewage treatment facilities with offensive odor treatment function designing low energy consumption |
| CN203620305U (en) * | 2013-12-03 | 2014-06-04 | 厦门水务中环污水处理有限公司 | Capping and algae removal device for secondary sedimentation tank effluent weir of sewage treatment plant |
| KR101498424B1 (en) * | 2014-07-17 | 2015-03-03 | 천지플랜트주식회사 | Cover assembly for sewage disposalplants |
| CN204848319U (en) * | 2015-08-05 | 2015-12-09 | 北京科智成市政设计咨询有限公司 | Sealed lid in sewage treatment pond |
| CN205948445U (en) * | 2016-08-26 | 2017-02-15 | 淮安自来水有限公司 | Reaction settling pond apron that slides |
| CN207016504U (en) * | 2017-04-20 | 2018-02-16 | 广州金鹏环保工程有限公司 | A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides |
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2017
- 2017-04-20 CN CN201710259267.6A patent/CN106915783A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201040753Y (en) * | 2007-05-29 | 2008-03-26 | 王洪凯 | Methane fermentation pool cover and square methane tank |
| KR101224524B1 (en) * | 2012-10-25 | 2013-01-21 | 주식회사 지이글로벌 | System for heat insulating covering of bio reactor for public sewage treatment facilities with offensive odor treatment function designing low energy consumption |
| CN203620305U (en) * | 2013-12-03 | 2014-06-04 | 厦门水务中环污水处理有限公司 | Capping and algae removal device for secondary sedimentation tank effluent weir of sewage treatment plant |
| KR101498424B1 (en) * | 2014-07-17 | 2015-03-03 | 천지플랜트주식회사 | Cover assembly for sewage disposalplants |
| CN204848319U (en) * | 2015-08-05 | 2015-12-09 | 北京科智成市政设计咨询有限公司 | Sealed lid in sewage treatment pond |
| CN205948445U (en) * | 2016-08-26 | 2017-02-15 | 淮安自来水有限公司 | Reaction settling pond apron that slides |
| CN207016504U (en) * | 2017-04-20 | 2018-02-16 | 广州金鹏环保工程有限公司 | A kind of symmetrical inclined flat seal cover plate in treatment tank combined type flat-top both sides |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483536A (en) * | 2018-06-02 | 2018-09-04 | 安徽海康药业有限责任公司 | A kind of recovery method of sewage disposal device and methane gas with floating roof |
| CN108824629A (en) * | 2018-08-07 | 2018-11-16 | 富威蜂窝科技（常州）有限公司 | Novel wastewater disposal basin floating head plate |
| CN108824629B (en) * | 2018-08-07 | 2024-01-30 | 江苏龙禾轻型材料有限公司 | Novel wastewater pool floating cover plate |
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