CN217148698U - Biological filler and sewage treatment equipment - Google Patents
Biological filler and sewage treatment equipment Download PDFInfo
- Publication number
- CN217148698U CN217148698U CN202220356571.9U CN202220356571U CN217148698U CN 217148698 U CN217148698 U CN 217148698U CN 202220356571 U CN202220356571 U CN 202220356571U CN 217148698 U CN217148698 U CN 217148698U
- Authority
- CN
- China
- Prior art keywords
- substrate
- base body
- width
- biological filler
- state
- 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.)
- Active
Links
Images
Classifications
-
- 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
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model relates to the technical field of sewage treatment, a biological filler and sewage treatment equipment is provided. The biological filler comprises a matrix; a plurality of pores are arranged on the substrate; the substrate is switchable between a first state and a second state; the width of the aperture is a first width with the substrate in the first state; under the condition that the substrate is in the second state, the width of the pore is the second width, the second width is larger than the first width, and part of the edge of the pore protrudes out of the surface of the substrate. The utility model discloses shown biofilm carrier has great surface area, can effectively avoid blockking up and the easy washing of ageing biomembrane drops, can improve the treatment effect to sewage, reduces biofilm carrier and changes the frequency to be convenient for install and change.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a biofilm carrier and sewage treatment device.
Background
The biological filler is an effective means for improving the sludge amount in the sewage treatment biochemical process, and is a main carrier of a hydrolytic acidification process and a biomembrane method. The biological filler is also a place where the microorganisms inhabit, and can provide stable growth and reproduction space for the microorganisms, enrich the microorganisms, reduce the sludge load of a treatment system, and increase the contact probability between sludge and substances, thereby improving the treatment effect on sewage.
The existing biological filler mainly comprises a combined filler, a three-dimensional elastic filler, a porous suspension ball filler and an active biological filler, wherein the internal structure of the biological filler is increased to improve the specific surface area, the internal space of the biological filler is reduced, the internal structure is designed into a fixed multilayer structure, the internal structure is slightly impacted by sewage, and the problem of easy blockage exists. Meanwhile, based on the existing arrangement structure of the biological filler, an aged biological film attached to the biological filler is not easy to fall off and discharge, and along with the prolonging of the service life, the biological filler has poor sewage treatment effect, needs to be replaced periodically, and is difficult to improve the sewage treatment efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model provides a biofilm carrier and sewage treatment device for it is little to solve or improve current biofilm carrier existence biofilm carrier volume, and the difficult problem that drops of ageing biofilm carrier.
The utility model provides a biological filler, include: a substrate; a plurality of pores are arranged on the substrate; the substrate is switchable between a first state and a second state; the width of the aperture is a first width with the substrate in the first state; under the condition that the substrate is in the second state, the width of the pore is the second width, the second width is larger than the first width, and part of the edge of the pore protrudes out of the surface of the substrate.
According to the biological filler provided by the utility model, the pores comprise the unfolding holes; under the condition that the substrate is in a first state, the unfolding hole is in a strip shape, and the width of the unfolding hole is the first width; and under the condition that the base body is in the second state, part of the edge of the expanded hole protrudes out of the surface of the base body, and the maximum width of the expanded hole is the second width.
According to the utility model provides a biological filler, the pore space comprises a structure reinforcing hole; the structural reinforcement hole is communicated with the expansion hole; the structural reinforcing hole is arranged at least one end of the unfolding hole along the length direction of the unfolding hole.
According to the utility model provides a pair of biological packing under the condition that the base member is in first state, the exhibition hole is linear, broken line form or arc form, first width equals zero or is close to zero.
According to the biological filler provided by the utility model, the plurality of pores are sequentially arranged on the substrate along the length direction of the pores; and/or the plurality of pores are sequentially arranged on the substrate along the width direction of the pores.
According to the utility model provides a pair of biological packing, the base member includes planar base member or curved surface form base member.
According to the biological filler provided by the utility model, the base body comprises a scroll-shaped base body, and the scroll-shaped base body is formed by winding a planar base body layer by layer according to a preset direction; or the base body comprises a cylindrical base body, and the cylindrical base body is formed by connecting two side edges of a planar base body along a preset direction; the ratio of the axial length of the cylindrical base body to the maximum outer diameter of the cylindrical base body is 0.5-2, the maximum outer diameter of the cylindrical base body is smaller than or equal to 30mm, or the ratio of the axial length of the cylindrical base body to the maximum outer diameter of the cylindrical base body is larger than 2.
According to the biological filler provided by the utility model, the base body comprises a spherical base body which is made of a planar base body; a buoyancy piece is arranged in the spherical base body.
According to the utility model provides a biological filler, the base member includes the elastic matrix, the elastic matrix includes polyurethane elastic matrix or polyethylene octene co-elastic matrix; and/or a dopant and/or a cavity are arranged in the matrix, and the density of the dopant is less than that of water.
The utility model also provides a sewage treatment device, sewage treatment device includes as above arbitrary biofilm carrier.
The utility model provides a biological filler and sewage treatment device, the biological filler has simple structure, is easy to process and transport, and based on the optimized design of the matrix, the matrix can be ensured to be switched from a first state to a second state under the hydraulic impact of sewage and other external force effects, so that the internal and external surface areas of the biological filler are increased, and the film hanging amount of microorganisms is obviously improved; meanwhile, when the substrate is in the second state, each pore on the substrate is expanded into a three-dimensional shape, so that a three-dimensional space is provided for microorganisms, the impact of sewage is resisted, the film hanging strength of the surface of the substrate is improved, the aged biological film is easy to wash and fall off based on the surface acting force generated by the substrate in the state switching, new microorganisms are re-attached, and the sewage treatment effect is improved; in addition, because when the base member is in the second state, the width increase of each hole on the base member can effectively avoid the biological filler to block up, reduces the change frequency of biological filler, has practiced thrift manpower and material resources.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a first structured biological filler provided by the present invention in a first state;
FIG. 2 is a schematic structural view of the bio-packing shown in FIG. 1 in a second state according to the present invention;
FIG. 3 is a second schematic structural view of the first structured biological filler provided by the present invention in the first state;
FIG. 4 is a schematic structural view of the bio-packing shown in FIG. 3 in a second state provided by the present invention;
fig. 5 is a schematic enlarged partial view of the utility model at K1 in fig. 3;
fig. 6 is a schematic enlarged partial view of the utility model at K2 in fig. 4;
FIG. 7 is a schematic structural view of a second structured biological filler provided by the present invention in a first state;
reference numerals:
11: a substrate; 12: a pore; 111: opening the holes; 112: the structure reinforces the hole.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following describes a biological filler and sewage treatment device of the present invention with reference to fig. 1 to 7.
As shown in fig. 1 to 4, the present embodiment provides a biological filler, including: a base 11; a plurality of pores 12 are arranged on the substrate 11; the base 11 is switchable between a first state and a second state; the width of the aperture 12 is a first width with the substrate 11 in the first state; in the second state of the substrate 11, the width of the aperture 12 is a second width, the second width is greater than the first width, and a part of the aperture 12 protrudes from the surface of the substrate 11 along the edge.
Specifically, the biological filler shown in the embodiment has a simple structure, is easy to process and transport, and based on the optimized design of the matrix 11, the matrix 11 can be switched from the first state to the second state under the hydraulic impact of sewage and other external forces, so that the internal and external surface areas of the biological filler are increased, and the biofilm formation amount of microorganisms is remarkably increased; meanwhile, when the substrate 11 is in the second state, the pores 12 on the substrate 11 are expanded into a three-dimensional shape, so that a three-dimensional attachment space is provided for microorganisms, the impact of sewage is resisted, the film hanging strength of the surface of the substrate 11 is improved, and the aged biological film is easy to wash and fall off and new microorganisms are reattached based on the surface acting force generated by the substrate 11 in the state switching, so that the sewage treatment effect is improved; in addition, because when base member 11 is in the second state, the width increase of each hole 12 on base member 11 can effectively avoid biological filler to block up, reduces biological filler's change frequency, has practiced thrift manpower and material resources.
Therefore, the biological filler has a large surface area, can effectively avoid blockage and easy flushing and falling of an aged biological film, can improve the sewage treatment effect, reduces the replacement frequency of the biological filler, and is convenient to install and replace.
In practical application, the biological filler shown in this embodiment is immersed in sewage, the other parts of the substrate 11 except the pores 12 provide carriers for the growth of the biological membrane, and each pore 12 on the substrate 11 provides a space for the attachment of the biological membrane.
When sewage flows through the biological filler at a certain flow velocity, the substrate 11 is unfolded from the first state to the second state under the action of water power, microorganisms are gradually attached to the surface of the substrate 11 and in the unfolded pores 12 to form a biological film, the biological film is contacted with the sewage, organic pollutants in the sewage are used as nutrient substances, and the sewage is purified while the self-reproduction is realized. In the process of biofilm growth, after the aged biofilm falls off, other suspended microorganisms in the sewage gradually attach to the surface of the biological filler and form a new biofilm, and the circulation is carried out, so that the efficient treatment of the sewage is realized.
In this embodiment, the biological filler can be prepared into various structural forms according to actual requirements, for example, the biological filler is prepared into a sheet shape, a column shape, a granular shape, etc., but in the case that the biological filler is immersed in the sewage, the expanded pores 12 are ensured to be contacted with the water flow in a horizontal or vertical distribution state, so as to achieve better separation and treatment effects on the water flow of the sewage.
For example, in the case that the biological filler is prepared in a sheet shape and is immersed in the aeration tank, bubbles in the sewage are divided by the pores 12 distributed horizontally or vertically when passing through the matrix 11 of the biological filler, so that the bubbles with a larger volume are divided into a plurality of bubbles with a smaller volume, and a water-gas biofilm can be exchanged more sufficiently, which is beneficial to improving the transfer rate and utilization rate of oxygen, and realizing efficient treatment of organic matters in the sewage.
In some embodiments, as shown in fig. 1 and 2, in order to facilitate the substrate 11 to switch between the first state and the second state, the aperture 12 of the present embodiment includes a deployment hole 111; under the condition that the substrate 11 is in the first state, the expansion hole 111 is in a strip shape, and the width of the expansion hole 111 is the first width; under the condition that the base body 11 is in the second state, part of the expanded hole 111 protrudes out of the surface of the base body 11 along the edge, and the maximum width of the expanded hole 111 is the second width.
As shown in fig. 2, since the area of the other portion of the base 11 except the void 12 is not changed, when the expansion hole 111 is expanded from the first width to the second width, the portion of the expansion hole 111 along the edge is deformed under stress to adapt to the change of the gap width of the expansion hole 111. Obviously, part of the edge of the unfolding hole 111 can only protrude towards the surface of the substrate 11, so that when the substrate 11 is in the second state, the unfolding hole 111 is in a three-dimensional shape, the surface area of the biological filler is increased, and meanwhile, a three-dimensional space is provided for the attachment of microorganisms, so that the microorganisms can resist the impact of sewage, and the film hanging strength of the surface of the substrate 11 is improved.
In some embodiments, the present embodiment further optimizes the design of the voids 12 in order to increase the structural strength of the biological filler. Here, the aperture 12 shown in the present embodiment further includes a structural reinforcement hole 112; the structural reinforcement hole 112 communicates with the deployment hole 111; the structural reinforcing hole 112 is provided at least one end of the deployment hole 111 in the length direction of the deployment hole 111.
As shown in fig. 3 to 6, in the present embodiment, one structural reinforcing hole 112 may be provided at each of both ends of the deployment hole 111 in the length direction thereof. The structural reinforcement holes 112 may be circular holes, elliptical holes, or the like.
Thus, compared with the holes 12 in fig. 1 and fig. 2, the holes 12 shown in this embodiment are based on the arrangement of the structure reinforcing holes 112, so that the acute angle connecting structure that the two ends of the opening 111 are stressed in a concentrated manner is changed into a fillet connecting structure that is stressed uniformly, and the mechanical structure of the biological filler is reinforced and is more durable.
As shown in fig. 5, in order to control the variation of the width of the aperture 12 so as to provide the surface tension for the shedding of the aged biofilm on the surface of the substrate 11 under the action of the external force, the embodiment is further specifically configured that the spreading hole 111 is linear with a first width equal to zero or close to zero, for example, the first width is 0 to 5mm in the case that the substrate 11 is in the first state.
Accordingly, as shown in fig. 6, when the base body 11 is switched from the first state to the second state based on the impact action of the hydraulic power, the spread hole 111 is spread in the width direction thereof and deformed into an irregular hexagonal hole, which communicates with one of the structure reinforcing holes 112 at both ends thereof in the length direction thereof, based on the restriction of the structure reinforcing hole 112.
Of course, in this embodiment, the opening 111 may be disposed in a broken line shape or an arc shape when the substrate 11 is in the first state, for example, in a case where the opening 111 is in a broken line shape, the opening 111 may specifically be composed of two straight line segments with a predetermined included angle, and in a case where the opening 111 is in an arc shape, the opening 111 may specifically be disposed in an arc shape or a curved line shape.
In some embodiments, in order to facilitate switching the substrate 11 between the first state and the second state, the present embodiment provides that a plurality of pores 12 are sequentially arranged on the substrate 11 along the length direction of the pores 12; and/or, a plurality of pores 12 are arranged in sequence on the substrate 11 along the width direction of the pores 12.
As shown in fig. 1 to 4, in a further optimized design, the substrate 11 of the present embodiment may be provided in a planar shape or a curved shape to be formed into a planar substrate or a curved substrate, respectively. In particular, in the present embodiment, while the plurality of pores 12 are sequentially arranged on the substrate 11 along the length direction of the pores 12, the plurality of pores 12 are also sequentially arranged on the substrate 11 along the width direction of the pores 12, so that the plurality of pores 12 are arranged in an array on the substrate 11, and are suitable for controlling the pores 12 to switch between the open state and the closed state under the action of water power or other external force.
In some embodiments, as shown in fig. 7, the substrate 11 includes a cylindrical substrate formed by connecting two sides of a planar substrate along a predetermined direction. Here, the end of the tubular base body may be designed to have a circular shape, a triangular shape, a rectangular shape, a regular polygonal shape, or the like. The port of the cylindrical base body shown in the present embodiment is preferably cylindrical.
In one embodiment, the ratio of the axial length of the cylindrical base to the maximum outer diameter of the cylindrical base is 0.5-2, for example, the ratio of the axial length of the cylindrical base to the maximum outer diameter of the cylindrical base may be 0.5, 0.6, 1.0, 1.2, 1.5, 1.8, and 2.
Meanwhile, the maximum outer diameter of the cylindrical base body is set to be 30mm or less in the present embodiment, for example, the maximum outer diameter of the cylindrical base body may be 10mm, 15mm, 20mm, 25mm, and 30 mm.
The axial length of the cylindrical matrix is close to the maximum outer diameter of the cylindrical matrix, and the maximum outer diameter of the cylindrical matrix is small, so that the biological filler shown in the embodiment is similar to a granular filler known in the art.
In practical application, the width direction of the pores 12 is distributed along the axial direction of the cylindrical matrix, and when the biological filler is directly thrown into sewage treated by the sewage treatment equipment, the cylindrical matrix can be deformed along the axial direction of the cylindrical matrix based on hydraulic impact of the sewage or collision between different biological fillers, so that the cylindrical matrix can be switched between the first state and the second state.
In another embodiment, in the case that the substrate 11 is a cylindrical substrate, the present embodiment may set the ratio of the axial length of the cylindrical substrate to the maximum outer diameter of the cylindrical substrate to be greater than 2, so as to make the biological filler in a cylindrical shape and ensure that the biological filler has a larger axial length. In this embodiment, the ratio of the axial length of the cylindrical base body to the maximum outer diameter of the cylindrical base body may be set to be greater than 10.
In this embodiment, the substrate 11 may be a reel-shaped substrate, and the reel-shaped substrate may be formed by winding the planar substrates shown in the above-described embodiments layer by layer in a predetermined direction. In this embodiment, the diameter of the reel-shaped substrate may be set according to actual requirements, but the specific size of the reel-shaped substrate is not limited.
In some embodiments, the present embodiment may also design the base body to be spherical; a buoyancy element is provided in the base body, which may be, for example, a float as is known in the art.
Here, the present embodiment is based on the arrangement of the buoyancy member, so that the buoyancy of the biological filler in the sewage is greater than or equal to the gravity thereof, so as to ensure that the biological filler can suspend in the sewage, or ensure that the biological filler floats on the surface of the sewage.
Based on the solutions shown in the above embodiments, in order to ensure that the biological filler can deform under the action of external force, the present embodiment provides the substrate as an elastic substrate, and the elastic substrate includes a polyurethane elastic substrate or a polyethylene octene co-elastic substrate.
Meanwhile, the embodiment can also be provided with dopants and/or cavities in the matrix, and the density of the dopants is less than that of water. The dopant may be wood block.
Thus, the present embodiment can reduce the weight and density of the matrix as much as possible, so that the biological filler can be suspended in the sewage or float on the surface of the sewage.
Preferably, the present embodiment also provides a sewage treatment apparatus comprising the biological filler as described in any one of the above.
Specifically, since the sewage treatment device includes the biological filler, and the specific structure of the biological filler refers to the above embodiment, the sewage treatment device shown in this embodiment includes all technical solutions of the above embodiment, and therefore, at least all beneficial effects brought by all technical solutions of the above embodiment are achieved, and no further description is provided herein.
It should be noted that, in the sewage treatment, the biological filler shown in this embodiment can be used as a biological carrier for hydrolytic acidification, contact oxidation, anaerobic or aerobic fluidized bed, expanded bed, biological filter, etc., and when the biological filler is directly added into a common activated sludge treatment system, the treatment capacity and efficiency of the plateau system can be greatly improved without changing all the operation conditions of the original system, and good denitrification and dephosphorization effects can be obtained.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A biological filler, comprising: a substrate; a plurality of pores are arranged on the substrate; the substrate is switchable between a first state and a second state;
the width of the aperture is a first width with the substrate in the first state;
under the condition that the substrate is in the second state, the width of the pore is the second width, the second width is larger than the first width, and part of the edge of the pore protrudes out of the surface of the substrate.
2. The biological filler according to claim 1,
the aperture comprises a deployment opening;
under the condition that the substrate is in a first state, the unfolding hole is in a strip shape, and the width of the unfolding hole is the first width;
and under the condition that the base body is in the second state, part of the edge of the expanded hole protrudes out of the surface of the base body, and the maximum width of the expanded hole is the second width.
3. The biological filler according to claim 2,
the aperture comprises a structural reinforcement hole;
the structural reinforcement hole is communicated with the expansion hole; the structural reinforcing hole is arranged at least one end of the unfolding hole along the length direction of the unfolding hole.
4. The biological filler according to claim 2,
the opening is linear, polygonal or arc in shape with the substrate in the first state, and the first width is equal to or close to zero.
5. The biological filler according to claim 1,
the plurality of pores are sequentially arranged on the substrate along the length direction of the pores;
and/or the plurality of pores are sequentially arranged on the substrate along the width direction of the pores.
6. The biological filler according to any one of claims 1 to 5,
the substrate may comprise a planar substrate or a curved substrate.
7. The biological filler according to any one of claims 1 to 5,
the base body comprises a scroll-shaped base body, and the scroll-shaped base body is formed by winding a planar base body layer by layer according to a preset direction;
or the base body comprises a cylindrical base body, and the cylindrical base body is formed by connecting two side edges of a planar base body along a preset direction;
the ratio of the axial length of the cylindrical base body to the maximum outer diameter of the cylindrical base body is 0.5-2, the maximum outer diameter of the cylindrical base body is smaller than or equal to 30mm, or the ratio of the axial length of the cylindrical base body to the maximum outer diameter of the cylindrical base body is larger than 2.
8. The biological filler according to any one of claims 1 to 5,
the base body comprises a spherical base body, and the spherical base body is made of a planar base body; a buoyancy piece is arranged in the spherical base body.
9. The biological filler according to any one of claims 1 to 5,
the substrate comprises an elastic substrate, and the elastic substrate comprises a polyurethane elastic substrate or a polyethylene octene co-elastic substrate;
and/or a dopant and/or a cavity are arranged in the matrix, and the density of the dopant is less than that of water.
10. A wastewater treatment plant characterized in that it comprises a biological filler according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220356571.9U CN217148698U (en) | 2022-02-22 | 2022-02-22 | Biological filler and sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220356571.9U CN217148698U (en) | 2022-02-22 | 2022-02-22 | Biological filler and sewage treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217148698U true CN217148698U (en) | 2022-08-09 |
Family
ID=82690485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220356571.9U Active CN217148698U (en) | 2022-02-22 | 2022-02-22 | Biological filler and sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217148698U (en) |
-
2022
- 2022-02-22 CN CN202220356571.9U patent/CN217148698U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203498167U (en) | Microbial carrier and filler carrier | |
| US11401186B2 (en) | Urban river channel direct purification device | |
| CN104058508A (en) | Water treatment method for purifying sewage by use of microorganisms | |
| CN113860498A (en) | HC-MBBR (hydrogen chloride-moving bed biofilm reactor) process for enhanced nitrogen and phosphorus removal of sewage | |
| CN217148698U (en) | Biological filler and sewage treatment equipment | |
| CN208135960U (en) | A kind of water body ecological repairing device | |
| CN212356715U (en) | Strip-shaped cavernous body biological filler mechanism | |
| CN213265897U (en) | Three-dimensional aeration biofilm reactor | |
| CN114590883A (en) | Biological filler and sewage treatment equipment | |
| CN111977802A (en) | Advanced treatment system and method for recycling jet weaving sewage | |
| CN2486547Y (en) | Suspending type biological contact waste water processing oxidation tower | |
| CN215799046U (en) | Reoxygenation type constructed wetland | |
| CN212655548U (en) | Filling combined filler | |
| CN214299478U (en) | Frame type suspended denitrification filler integrated device for reforming oxidation ditch | |
| CN213141529U (en) | Novel biological aerated filter | |
| CN113321305A (en) | Micro-power aeration water body purification device | |
| CN108439602A (en) | A kind of artificial floating island design of subregion denitrogenation | |
| CN212293197U (en) | Ecological floating island | |
| CN211770584U (en) | Filler module of integrated aeration system | |
| CN113307370A (en) | Barrel for water purification | |
| CN209143828U (en) | A kind of particle strengthening water purifying device being placed in river or lake | |
| CN209778459U (en) | Oxygenation type bionic microorganism carrier | |
| CN2563149Y (en) | Suspending biological carrier easy hainging film | |
| CN206799244U (en) | A kind of O levels biological treatment tank | |
| CN206666234U (en) | A kind of biological prosthetic self-reversal system and device of active solar energy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |