CN109179864A - A kind of industrial sewage-treatment plant - Google Patents
A kind of industrial sewage-treatment plant Download PDFInfo
- Publication number
- CN109179864A CN109179864A CN201811025389.XA CN201811025389A CN109179864A CN 109179864 A CN109179864 A CN 109179864A CN 201811025389 A CN201811025389 A CN 201811025389A CN 109179864 A CN109179864 A CN 109179864A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- collecting tank
- pump housing
- sedimentation basin
- degraded pond
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/109—Characterized by the shape
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Abstract
The invention discloses a kind of industrial sewage-treatment plants, including collecting tank, the top side of the collecting tank is provided with pipeline one, the bottom end of the pipeline one extends to the inside upper part of the collecting tank, the inside upper part of the collecting tank is provided with filter screen, the filter screen is located at the lower section of the pipeline one, the interior side of the collecting tank and the separate pipeline one is provided with pipeline two, the bottom end of the pipeline two is located at the inside bottom of the collecting tank, the top of the pipeline two is fixedly connected through the filter screen and with the pump housing one for being set to the collecting tank side, the pump housing one is located at the collecting tank and the side far from the pipeline one, the top of the pump housing one is provided with pipeline three, the side of the collecting tank and the close pump housing one is provided with sedimentation basin, it is provided between the collecting tank and the sedimentation basin Pipeline four, the collecting tank are connected to by the pipeline four with the sedimentation basin.The utility model has the advantages that improving the utilization rate of water.
Description
Technical field
The present invention relates to sewage treatment fields, it particularly relates to a kind of industrial sewage-treatment plant.
Background technique
Sewage treatment is a kind of to be discharged into a certain water body or the water quality requirement reused to reach sewage and carry out only to it
The process of change.Sewage treatment is widely used in building, agricultural, traffic, the energy, petrochemical industry, environmental protection, urban landscape, medical treatment, food and drink
Etc. every field, also come into the daily life of common people more and more.Existing sewage treatment mostly uses greatly drug-treated,
So that processing speed improves, but opposite drug is but also the benefit materials in water body remove together, under Water quality is serious
Drop, is unfavorable for being used for a long time, while processed water direct emission, but also the utilization rate of the energy reduces.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For the problems in the relevant technologies, the present invention proposes a kind of industrial sewage-treatment plant, to overcome existing correlation
Above-mentioned technical problem present in technology.
The technical scheme of the present invention is realized as follows:
A kind of industrial sewage-treatment plant, including collecting tank, the top side of the collecting tank are provided with pipeline one, institute
The bottom end for stating pipeline one extends to the inside upper part of the collecting tank, and the inside upper part of the collecting tank is provided with filter screen, institute
State the lower section that filter screen is located at the pipeline one, the collecting tank and interior side far from the pipeline one is provided with pipeline
Two, the bottom end of the pipeline two is located at the inside bottom of the collecting tank, the top of the pipeline two through the filter screen and
It is fixedly connected with the pump housing one for being set to the collecting tank side, the pump housing one is located at the collecting tank and far from the pipeline
One side, the top of the pump housing one are provided with pipeline three, the collecting tank and are provided with close to the side of the pump housing one
Sedimentation basin, is provided with pipeline four between the collecting tank and the sedimentation basin, the collecting tank by the pipeline four with it is described
Sedimentation basin connection, the sedimentation basin and the side far from the collecting tank are provided with degraded pond, the sedimentation basin and the degradation
Top between pond is provided with the pump housing two, the pump housing two and the side of the sedimentation basin is provided with pipeline five, the pipe
The bottom end in road five extends to the inside bottom of the sedimentation basin, and the top of the pump housing two is provided with pipeline six, the degraded pond
It is connected to the sedimentation basin by pipeline six, the side of the degraded pond is provided with reservoir, and the reservoir passes through pipeline seven
It is connected to, the reservoir and side far from the degraded pond is provided with the pump housing three, the pump housing three and leans on the degraded pond
The side of the nearly reservoir is provided with pipeline eight, and the bottom end of the pipeline eight extends to the inside bottom of the reservoir, institute
The top for stating the pump housing three is provided with pipeline nine, the reservoir and middle side part far from the degraded pond is provided with drainpipe,
Control valve is provided on the drainpipe；
Wherein, the lower inside of the degraded pond is symmetrically arranged with several support rods, between the top of the support rod
It is provided with cross bar one, cross bar two, the bottom of the cross bar one and the cross bar are provided between the bottom of the support rod
Two top is provided with fixed ring, and helical packing is provided between the fixed ring, is provided at the top of the degraded pond
Support frame is provided with air pump at the top of support frame as described above, and the bottom of the air pump is provided with tracheae one, the bottom end of the tracheae one
It is symmetrically arranged with tracheae two, the bottom end of the tracheae two extends to the inside bottom of the degraded pond, the bottom end of the tracheae two
It is provided with check valve, is provided with air supply pipe between the check valve.
Further, ground is run through at the top of the collecting tank, the sedimentation basin, the degraded pond and the reservoir
And the top on ground is extended to, the pump housing one, the pump housing two and the pump housing three are respectively positioned at the top of ground, the pipeline
Four, the pipeline six, the pipeline seven and the drainpipe are respectively positioned on ground bottom.
Further, the filter screen is located at the inside of fixed frame, and the filter screen passes through the fixed frame and the collection
Liquid pool is fixedly connected.
Further, the inner wall of the degraded pond is provided with the protective layer of concrete structure, the bottom of the support rod
It is provided with fixed plate, the fixed plate passes through lock screw and is fixedly connected with the protective layer.
Further, the distance between adjacent described helical packing is greater than 20cm.
Further, several gas vents are evenly arranged at the top of the air supply pipe.
Further, protective cover plate is provided at the top of the sedimentation basin, the degraded pond and the reservoir.
Beneficial effects of the present invention: by being collected to sewage and primary filtration so that in sewage biggish impurity or
Suspended matter is excluded by filter screen, and the sludge of deposition is drawn through pipeline three and pipeline six for sludge by the pump housing one and the pump housing two
It is sent in external filtering equipment, is further processed, the sewage after processing enters degraded pond, and the helical packing in degraded pond is inhaled
Attached microorganism carries out degradation purification to sewage by microorganism, to remove crude removal, last treated sewage collecting to water storage
Chi Zhong, it is static, it is for later use, to improve the utilization rate of water to discharging again after the carry out secondary use after processing.
In addition, by the way that ground is run through at the top of collecting tank, sedimentation basin, degraded pond and reservoir and extends to ground
Top, the pump housing one, the pump housing two and the pump housing three are respectively positioned at the top of ground, and pipeline four, pipeline six, pipeline seven and drainpipe are respectively positioned on ground
The occupancy in space is reduced so that whole device is respectively positioned on underground in face bottom；By filter screen being located at the inside of fixed frame, mistake
Strainer is fixedly connected by fixed frame with collecting tank, is convenient for changing；By the way that the inner wall of degraded pond is provided with concrete structure
Protective layer, the bottom of support rod is provided with fixed plate, and fixed plate passes through lock screw and is fixedly connected with protective layer, fixed
It is stronger；By the way that the distance between adjoining spiral filler is greater than 20cm, avoids setting excessively intensive, influence degradation efficiency；
By being convenient for aeration several gas vents are evenly arranged at the top of air supply pipe；By sedimentation basin, degraded pond and reservoir
Top be provided with protective cover plate, when use, is safer.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram one of industrial sewage-treatment plant according to an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram two of industrial sewage-treatment plant according to an embodiment of the present invention；
Fig. 3 is a kind of side view of the support rod of industrial sewage-treatment plant according to an embodiment of the present invention.
In figure:
1, collecting tank；2, pipeline one；3, filter screen；4, pipeline two；5, the pump housing one；6, pipeline three；7, sedimentation basin；8, pipeline
Four；9, degraded pond；10, the pump housing two；11, pipeline five；12, pipeline six；13, pipeline six；14, reservoir；15, pipeline seven；16, it pumps
Body three；17, pipeline eight；18, pipeline nine；19, drainpipe；20, control valve；21, support rod；22, cross bar one；23, cross bar two；
24, fixed ring；25, helical packing；26, support frame；27, air pump；28, tracheae one；29, tracheae two；30, check valve；31, it supplies
Pipe；32, fixed frame；33, protective layer；34, fixed plate；35, protective cover plate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
According to an embodiment of the invention, providing a kind of industrial sewage-treatment plant.
As shown in Figure 1-3, a kind of industrial sewage-treatment plant according to an embodiment of the present invention, including collecting tank 1, it is described
The top side of collecting tank 1 is provided with pipeline 1, and the bottom end of the pipeline 1 extends to the inside upper part of the collecting tank 1,
The inside upper part of the collecting tank 1 is provided with filter screen 3, and the filter screen 3 is located at the lower section of the pipeline 1, the liquid collecting
The interior side of pond 1 and the separate pipeline 1 is provided with pipeline 24, and the bottom end of the pipeline 24 is located at the collecting tank 1
Inside bottom, the top of the pipeline 24 through the filter screen 3 and with the pump housing 1 that is set to 1 side of collecting tank
It is fixedly connected, the pump housing 1 is located at the collecting tank 1 and the side far from the pipeline 1, the top of the pump housing 1
It is provided with pipeline 36, the collecting tank 1 and the side of the pump housing 1 is provided with sedimentation basin 7, the collecting tank 1 and institute
It states and is provided with pipeline 48 between sedimentation basin 7, the collecting tank 1 is connected to by the pipeline 48 with the sedimentation basin 7, described heavy
Shallow lake pond 7 and the side of the collecting tank 1 is provided with degraded pond 9, the top between the sedimentation basin 7 and the degraded pond 9
It is provided with the pump housing 2 10, the pump housing 2 10 and the side of the sedimentation basin 7 is provided with pipeline 5 11, the pipeline 5 11
Bottom end extend to the inside bottom of the sedimentation basin 7, the top of the pump housing 2 10 is provided with pipeline 6 12, the degraded pond
9 are connected to the sedimentation basin 7 by pipeline 6 13, and the side of the degraded pond 9 is provided with reservoir 14, and the reservoir 14 is logical
Piping 7 15 is connected to the degraded pond 9, and the side of the reservoir 14 and the separate degraded pond 9 is provided with the pump housing three
16, the pump housing 3 16 and the side of the reservoir 14 is provided with pipeline 8 17, the bottom end of the pipeline 8 17 extends
To the inside bottom of the reservoir 14, the top of the pump housing 3 16 is provided with pipeline 9 18, the reservoir 14 and separate
One middle side part of the degraded pond 9 is provided with drainpipe 19, is provided with control valve 20 on the drainpipe 19；
Wherein, the lower inside of the degraded pond 9 is symmetrically arranged with several support rods 21, the top of the support rod 21
Between be provided with cross bar 1, cross bar 2 23, the bottom of the cross bar 1 are provided between the bottom of the support rod 21
Portion and the top of the cross bar 2 23 are provided with fixed ring 24, and helical packing 25, institute are provided between the fixed ring 24
The top for stating degraded pond 9 is provided with support frame 26, and the top of support frame as described above 26 is provided with air pump 27, the bottom of the air pump 27
It is provided with tracheae 1, the bottom end of the tracheae 1 is symmetrically arranged with tracheae 2 29, and the bottom end of the tracheae 2 29 extends to
The inside bottom of the degraded pond 9, the bottom end of the tracheae 2 29 are provided with check valve 30, are arranged between the check valve 30
There is air supply pipe 31.
With the aid of the technical scheme, by being collected to sewage and primary filtration, so that biggish impurity in sewage
Or suspended matter is excluded by filter screen 3, the sludge of deposition is drawn through pipeline 36 and pipeline by the pump housing 1 and the pump housing 2 10
6 12 are sent to sludge in external filtering equipment, are further processed, it is processed after sewage enter degraded pond 9, in degraded pond 9
Helical packing 25 adsorb microorganism, degradation purification is carried out to sewage by microorganism, to remove crude removal, last treated
Sewage collecting is static into reservoir 14, for later use, to mention to discharging again after the carry out secondary use after processing
The high utilization rate of water.
In addition, by the way that ground is run through at the top of collecting tank 1, sedimentation basin 7, degraded pond 9 and reservoir 14 and is extended to
The top on ground, the pump housing 1, the pump housing 2 10 and the pump housing 3 16 are respectively positioned at the top of ground, pipeline 48, pipeline 6 13, pipeline 7 15
It is respectively positioned on ground bottom with drainpipe 19, so that whole device is respectively positioned on underground, reduces the occupancy in space；By filter screen 3
Positioned at the inside of fixed frame 32, filter screen 3 is fixedly connected by fixed frame 32 with collecting tank 1, is convenient for changing；By degraded pond
9 inner wall is provided with the protective layer 33 of concrete structure, and the bottom of support rod 21 is provided with fixed plate 34, and fixed plate 34 is equal
It is fixedly connected by lock screw with protective layer 33, fixation is stronger；By the way that the distance between adjoining spiral filler 25 is big
In 20cm, avoids setting excessively intensive, influence degradation efficiency；By the way that the top of air supply pipe 31 is evenly arranged with several exhausts
Hole, convenient for aeration；By the way that the top of sedimentation basin 7, degraded pond 9 and reservoir 14 is provided with protective cover plate 35, when use more
Add safety.
In conclusion by means of above-mentioned technical proposal of the invention, by being collected to sewage and primary filtration, so that
Biggish impurity or suspended matter are excluded by filter screen 3 in sewage, and the sludge of deposition is logical by the pump housing 1 and the extraction of the pump housing 2 10
Sludge is sent in external filtering equipment by piping 36 and pipeline 6 12, is further processed, and the sewage after processing enters drop
Pond 9 is solved, microorganism is adsorbed in the helical packing 25 in degraded pond 9, degradation purification is carried out to sewage by microorganism, to remove decontamination
Object, last treated sewage collecting is static into reservoir 14, for later use, thus secondary to the carry out after processed
It is discharged again after utilization, improves the utilization rate of water.
In addition, by the way that ground is run through at the top of collecting tank 1, sedimentation basin 7, degraded pond 9 and reservoir 14 and is extended to
The top on ground, the pump housing 1, the pump housing 2 10 and the pump housing 3 16 are respectively positioned at the top of ground, pipeline 48, pipeline 6 13, pipeline 7 15
It is respectively positioned on ground bottom with drainpipe 19, so that whole device is respectively positioned on underground, reduces the occupancy in space；By filter screen 3
Positioned at the inside of fixed frame 32, filter screen 3 is fixedly connected by fixed frame 32 with collecting tank 1, is convenient for changing；By degraded pond
9 inner wall is provided with the protective layer 33 of concrete structure, and the bottom of support rod 21 is provided with fixed plate 34, and fixed plate 34 is equal
It is fixedly connected by lock screw with protective layer 33, fixation is stronger；By the way that the distance between adjoining spiral filler 25 is big
In 20cm, avoids setting excessively intensive, influence degradation efficiency；By the way that the top of air supply pipe 31 is evenly arranged with several exhausts
Hole, convenient for aeration；By the way that the top of sedimentation basin 7, degraded pond 9 and reservoir 14 is provided with protective cover plate 35, when use more
Add safety.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of industrial sewage-treatment plant, which is characterized in that including collecting tank (1), the top side of the collecting tank (1)
It is provided with pipeline one (2), the bottom end of the pipeline one (2) extends to the inside upper part of the collecting tank (1), the collecting tank
(1) inside upper part is provided with filter screen (3), and the filter screen (3) is located at the lower section of the pipeline one (2), the collecting tank
(1) and the interior side far from the pipeline one (2) is provided with pipeline two (4), and the bottom end of the pipeline two (4) is located at the collection
The inside bottom of liquid pool (1), the top of the pipeline two (4) through the filter screen (3) and be set to the collecting tank (1)
The pump housing one (5) of side is fixedly connected, and the pump housing one (5) is located at the one of the collecting tank (1) and the separate pipeline one (2)
Side is provided with pipeline three (6), the collecting tank (1) and the side close to the pump housing one (5) at the top of the pump housing one (5)
It is provided with sedimentation basin (7), pipeline four (8), the collecting tank (1) is provided between the collecting tank (1) and the sedimentation basin (7)
It is connected to by the pipeline four (8) with the sedimentation basin (7), the side of the sedimentation basin (7) and separate the collecting tank (1) is set
It is equipped with degraded pond (9), the top between the sedimentation basin (7) and the degraded pond (9) is provided with the pump housing two (10), the pump housing
The side of two (10) and close the sedimentation basin (7) is provided with pipeline five (11), and the bottom end of the pipeline five (11) extends to institute
The inside bottom of sedimentation basin (7) is stated, pipeline six (12), the degraded pond (9) and institute are provided at the top of the pump housing two (10)
It states sedimentation basin (7) to be connected to by pipeline six (13), the side of the degraded pond (9) is provided with reservoir (14), the reservoir
(14) it is connected to by pipeline seven (15) with the degraded pond (9), the reservoir (14) and the side far from the degraded pond (9)
It is provided with the pump housing three (16), the pump housing three (16) and the side of the reservoir (14) is provided with pipeline eight (17), institute
The bottom end for stating pipeline eight (17) extends to the inside bottom of the reservoir (14), is provided with pipe at the top of the pump housing three (16)
Road nine (18), the reservoir (14) and the middle side part far from the degraded pond (9) are provided with drainpipe (19), the draining
Control valve (20) are provided on pipe (19)；
Wherein, the lower inside of the degraded pond (9) is symmetrically arranged with several support rods (21), the top of the support rod (21)
It is provided with cross bar one (22) between portion, is provided with cross bar two (23), the cross bar between the bottom of the support rod (21)
It is provided at the top of the bottom of one (22) and the cross bar two (23) fixed ring (24), is respectively provided between the fixed ring (24)
Have helical packing (25), is provided with support frame (26) at the top of the degraded pond (9), support frame as described above is provided at the top of (26)
Air pump (27), the bottom of the air pump (27) are provided with tracheae one (28), and the bottom end of the tracheae one (28) is symmetrically arranged with gas
Pipe two (29), the bottom end of the tracheae two (29) extend to the inside bottom of the degraded pond (9), the bottom of the tracheae two (29)
End is provided with check valve (30), is provided with air supply pipe (31) between the check valve (30).
2. a kind of industrial sewage-treatment plant according to claim 1, which is characterized in that the collecting tank (1), described
The top of sedimentation basin (7), the degraded pond (9) and the reservoir (14) runs through ground and extends to the top on ground, institute
It states the pump housing one (5), the pump housing two (10) and the pump housing three (16) to be respectively positioned at the top of ground, the pipeline four (8), the pipe
Road six (13), the pipeline seven (15) and the drainpipe (19) are respectively positioned on ground bottom.
3. a kind of industrial sewage-treatment plant according to claim 1, which is characterized in that the filter screen (3) is located at
The inside of fixed frame (32), the filter screen (3) are fixedly connected by the fixed frame (32) with the collecting tank (1).
4. a kind of industrial sewage-treatment plant according to claim 1, which is characterized in that the degraded pond (9) it is interior
Wall is provided with the protective layer (33) of concrete structure, and the bottom of the support rod (21) is provided with fixed plate (34), described
Fixed plate (34) is fixedly connected by lock screw with the protective layer (33).
5. a kind of industrial sewage-treatment plant according to claim 1, which is characterized in that the adjacent helical packing
The distance between (25) it is greater than 20cm.
6. a kind of industrial sewage-treatment plant according to claim 1, which is characterized in that the top of the air supply pipe (31)
Portion is evenly arranged with several gas vents.
7. a kind of industrial sewage-treatment plant according to claim 1, which is characterized in that the sedimentation basin (7), described
Protective cover plate (35) are provided at the top of degraded pond (9) and the reservoir (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811025389.XA CN109179864A (en) | 2018-09-04 | 2018-09-04 | A kind of industrial sewage-treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811025389.XA CN109179864A (en) | 2018-09-04 | 2018-09-04 | A kind of industrial sewage-treatment plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109179864A true CN109179864A (en) | 2019-01-11 |
Family
ID=64914286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811025389.XA Pending CN109179864A (en) | 2018-09-04 | 2018-09-04 | A kind of industrial sewage-treatment plant |
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| BRPI0704292A2 (en) * | 2007-11-23 | 2009-07-21 | De Limas Galdino Santana | natural wastewater treatment system |
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2018
- 2018-09-04 CN CN201811025389.XA patent/CN109179864A/en active Pending
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|---|---|---|---|---|
| BRPI0704292A2 (en) * | 2007-11-23 | 2009-07-21 | De Limas Galdino Santana | natural wastewater treatment system |
| CN201545770U (en) * | 2009-09-23 | 2010-08-11 | 杭州恒达环保实业有限公司 | System for processing wool weave dyeing waste water |
| CN102951775A (en) * | 2012-11-24 | 2013-03-06 | 青岛小川环保设备有限公司 | Integral sewage treatment method and device thereof |
| CN203498229U (en) * | 2013-10-16 | 2014-03-26 | 孙田力 | Modular biological membrane purifying and recycling device for drainage of same floor |
| CN205076832U (en) * | 2015-11-03 | 2016-03-09 | 莫培兴 | Solar sewage treatment device |
| CN205170569U (en) * | 2015-11-29 | 2016-04-20 | 亚力坤·马合木提 | A water filter equipment for concrete manufacturing |
| CN108439577A (en) * | 2018-04-19 | 2018-08-24 | 福建碧蓝环保股份公司 | A kind of wastewater treatment equipment based on helical packing |
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| 蔡进强: "《小城市生态系统建构研究与实践》", 31 March 2018, 山东大学出版社 * |
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Application publication date: 20190111 |