CN216005353U - Composite membrane oxygen control bioreactor - Google Patents
Composite membrane oxygen control bioreactor Download PDFInfo
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- CN216005353U CN216005353U CN202121920314.5U CN202121920314U CN216005353U CN 216005353 U CN216005353 U CN 216005353U CN 202121920314 U CN202121920314 U CN 202121920314U CN 216005353 U CN216005353 U CN 216005353U
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Abstract
The utility model relates to a composite membrane oxygen control bioreactor, belonging to the field of sewage treatment, comprising: the reactor comprises a reactor tank body, a membrane frame, a membrane component, a three-dimensional elastic biological membrane filler and a gas inlet main pipe. The membrane frame is arranged in the reactor tank body, a plurality of membrane assemblies are fixed on the membrane frame and fill the whole membrane frame, the upper parts of the membrane assemblies are connected with a gas inlet main pipe through pipelines, each membrane assembly is composed of a plurality of membrane filaments, and the three-dimensional elastic biomembrane filler is wound on the surfaces of the membrane filaments. The utility model has strong water quality impact resistance, and can accurately control the concentration of dissolved oxygen in water by adjusting the air inlet pressure and flow according to the change of the water quality of the incoming water, thereby ensuring that the outgoing water reaches the standard and is discharged; the membrane component and the three-dimensional elastic filler are combined, the biological membranes are attached to the membrane surface and the filler surface, the relative density of the biological membranes is improved, the purification efficiency is improved, two different biological membrane layered structures on the membrane filament surface and the filler surface can be realized, and the adaptability to water quality change is further enhanced.
Description
Technical Field
The utility model belongs to the field of sewage treatment, and particularly relates to a sewage biomembrane treatment process and a sewage biomembrane treatment device.
Background
The biomembrane reactor is one microbe curing technology, and has microbe fixed onto carrier stuffing and grown to form film-like biological sludge for degrading pollutant in water. At present, the application of the biofilm reactor in the field of sewage treatment is wider, and the biofilm reactor is one of the main technologies of sewage biological treatment. The biofilm reactor has the advantages of high organic load, short contact residence time, small occupied area and no sludge expansion problem in the operation management process.
The membrane aeration bioreactor is a novel sewage treatment process derived from a biofilm process, is a novel reactor combining the traditional biotechnology and the membrane technology, and mainly comprises an aeration membrane component and a biofilm, wherein the aeration membrane component can realize two functions of oxygen mass transfer and microorganism adhesion.
However, membrane-aerated bioreactors also present some problems in practical applications: (1) weak water impact resistance: when the water quality index of the inlet water fluctuates greatly, the biological membrane is possibly influenced greatly, and the degradation capability of pollutants is reduced; (2) the growth of the biofilm cannot be effectively controlled: the membrane component has high filling density, the growth of the biological membrane on the surface of the membrane cannot be controlled, and the efficiency of the reactor is reduced if the biological membrane grows excessively; (3) the biofilm shedding regeneration process is difficult to realize: the membrane aeration bioreactor mostly adopts a non-porous compact membrane, oxygen enters a water body through the dissolution diffusion effect, and the falling regeneration of the biological membrane is realized by the aeration stripping of large air bubbles at the bottom of the reactor, so that the layered structure of the biological membrane is easily damaged, and the denitrification of microorganisms is not facilitated.
Aiming at the problems of the membrane aeration bioreactor, the utility model provides a composite membrane oxygen control bioreactor which can effectively improve the impact resistance to water quality fluctuation and the pollutant degradation efficiency.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems mentioned in the background art, the utility model adopts the main technical scheme that:
a composite membrane oxygen control bioreactor comprising: the reactor comprises a reactor tank body, a membrane frame, a membrane component, a three-dimensional elastic biological membrane filler and a gas inlet main pipe.
The membrane frame is arranged in the reactor tank body, a plurality of membrane assemblies are fixed on the membrane frame and fill the whole membrane frame, the upper parts of the membrane assemblies are connected with a gas inlet main pipe through pipelines, each membrane assembly is composed of a plurality of membrane filaments, and the three-dimensional elastic biomembrane filler is wound on the surfaces of the membrane filaments.
When the reactor works, sewage to be treated enters the reactor tank body through the water inlet pipe, the membrane frame is submerged, gas enters the membrane module through the gas inlet main pipe, oxygen is provided for biochemical reaction, the oxygen is diffused from the inside of the membrane filaments to the outside of the membrane filaments and then is diffused to the surface of the three-dimensional elastic biological membrane filler to form a biological membrane, the oxygen supply amount can be adjusted through the gas inlet pressure and the flow, the biological membrane is formed on the surface of the membrane module and the surface of the three-dimensional elastic biological membrane filler, therefore, the sewage is purified, and the treated sewage is discharged through the water outlet pipe.
The reactor tank body is of a cuboid steel structure, the length of the reactor tank body is 2-2.5 meters, the width of the reactor tank body is 1-1.5 meters, the height of the reactor tank body is 2-2.5 meters, the inner wall of the reactor tank body is anticorrosive, and a water inlet pipe and a water outlet pipe are respectively arranged on two sides of the reactor tank body.
The membrane frame is 1.5-2.0 meters long, 0.8-1.2 meters wide and 1.2-1.8 meters high, and the upper part is provided with a membrane component clamping groove for installing and fixing the membrane component. The installation distance of each membrane assembly is 10-15 cm.
The membrane component is 0.8-1.25 m long and 1-1.5 m high, the membrane filaments are packaged in epoxy resin on the upper part of the membrane component, and the lower ends of the membrane filaments hang freely.
The membrane filaments are hollow fiber membranes made of polytetrafluoroethylene, the outer diameter of each membrane filament is 1.8-2.2 mm, the inner diameter of each membrane filament is 1.0-1.4 mm, and the pore diameter of each membrane filament is 0.2-0.3 micron. The surface of the membrane silk is attached with a biological membrane.
The material of the three-dimensional elastic biomembrane filler is polypropylene, and a biomembrane is attached to the surface of the filler.
The air inlet main pipe is connected with an air inlet pipeline at the upper part of each membrane module.
Has the advantages that:
the water quality impact resistance is strong: (1) according to the change of the quality of the incoming water, the concentration of dissolved oxygen in the water can be accurately controlled by adjusting the air inlet pressure and the air inlet flow, so that the effluent is ensured to be discharged after reaching the standard; (2) the technical scheme adopts a mode of combining the membrane component and the three-dimensional elastic filler, and the surfaces of the membrane and the filler are both attached with the biological membrane, so that the relative density of the biological membrane is improved, the purification efficiency is improved, and the buffer capacity of resisting water quality impact is enhanced; (3) the technical scheme can realize two different biomembrane layered structures on the surface of the membrane wire and the surface of the filler, can realize the functions of synchronous denitrification and dephosphorization for removing carbon, and further enhances the adaptability to water quality change.
The falling regeneration of the biological membrane is controllable: the membrane adopted by the technical scheme is of a microporous structure, so that two modes of bubble oxygen supply and bubble-free oxygen supply can be realized, and when the biological membrane needs to be regenerated, the bubble oxygen supply mode can be adopted, and the biological membrane is blown off by bubbling from inside to outside; compared with the traditional aeration mode, the technical scheme has mild and controllable operation mode.
The biological film overgrowth can be effectively controlled: the technical scheme adopts a mode of combining the membrane component and the three-dimensional elastic filler, and the membrane filaments are spaced by the filler, so that the problem of adhesion of the membrane filaments of the traditional membrane aeration bioreactor is solved, and the excessive growth of the biological membrane is effectively inhibited.
Drawings
FIG. 1 is a schematic front view of a reactor according to the present invention;
FIG. 2 is a top view of a reactor according to the present invention;
FIG. 3 is a schematic view of a partial structure of a membrane module.
In the figure: 1, a reactor tank body; 2 a membrane frame; 3, a membrane component; 4, filling a three-dimensional elastic biological film; 5, film yarn; 6 an air inlet main pipe; 7, a water inlet pipe; and 8, discharging a water pipe.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
For better explanation of the present invention, the technical solutions of the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. This embodiment discloses a composite membrane oxygen control biofilm reactor as shown in fig. 1-3, comprising: the device comprises a reactor tank body 1, a membrane frame 2, a membrane component 3, a three-dimensional elastic biological membrane filler 4 and an air inlet main pipe 6.
The membrane frame 2 is placed in the reactor tank body 1, 9 membrane assemblies 3 are fixed on the membrane frame and filled in the whole membrane frame 2, the upper parts of the membrane assemblies 3 are connected with a gas inlet main pipe 6 through pipelines, each membrane assembly 3 is composed of 800 membrane filaments 5, and the three-dimensional elastic biomembrane filler 4 is wound on the surfaces of the membrane filaments 5.
When the reactor works, sewage to be treated with the flow rate of 500L/h enters the reactor tank body 1 through the water inlet pipe 7 to submerge the membrane frame 2, gas with the pressure of 1KPa enters the membrane component 3 through the air inlet main pipe 6 to provide oxygen for biochemical reaction, the oxygen diffuses from the membrane filaments 5 to the outside of the membrane filaments and further diffuses to the surface of the three-dimensional elastic biological membrane filler 4 to form a biological membrane, and thus biological membranes are formed on the surfaces of the membrane component 3 and the three-dimensional elastic biological membrane filler 4 to purify the sewage, and the treated sewage is discharged through the water outlet pipe 8.
Preferentially, the reactor tank body 1 is of a cuboid steel structure, is 2.5 meters long, 1.5 meters wide and 2.5 meters high, has an inner wall corrosion-resistant structure, and the two sides of the reactor tank body 1 are respectively provided with a water inlet pipe 7 and a water outlet pipe 8.
Preferably, the membrane frame 2 has a length of 2.0 meters, a width of 1.2 meters and a height of 1.8 meters, and a membrane module slot is arranged at the upper part for installing and fixing the membrane module 3. Each membrane module 3 is installed at a distance of 15 cm.
Preferably, the membrane module 3 is 1.25 meters long and 1.5 meters high, the membrane filaments 5 are encapsulated in the epoxy resin on the upper part of the membrane module, and the lower ends of the membrane filaments 5 hang freely.
Preferably, the membrane filaments 5 are hollow fiber membranes made of polytetrafluoroethylene, the outer diameter of the membrane filaments is 2.2 mm, the inner diameter of the membrane filaments is 1.4 mm, and the pore diameter of the membrane filaments is 0.2-0.3 micron.
Preferably, the material of the three-dimensional elastic biomembrane filler 4 is polypropylene.
Preferably, the inlet manifold 6 is connected to the inlet duct at the upper part of each membrane module 3.
Claims (9)
1. A composite membrane oxygen control bioreactor, comprising: a reactor tank body (1), a membrane frame (2), a membrane component (3), a three-dimensional elastic biological membrane filler (4) and a gas inlet main pipe (6); the membrane frame (2) is placed inside the reactor tank body (1), 9 membrane assemblies (3) are fixed on the membrane frame and fill the whole membrane frame (2), the upper parts of the membrane assemblies (3) are connected with a gas inlet main pipe (6) through pipelines, the membrane assemblies (3) are composed of membrane filaments (5), and the three-dimensional elastic biomembrane filler (4) is wound on the surfaces of the membrane filaments (5).
2. The composite membrane oxygen control bioreactor according to claim 1, wherein when the bioreactor is in operation, sewage to be treated enters the reactor tank body (1) through the water inlet pipe (7), the membrane frame (2) is submerged, gas enters the membrane module (3) through the air inlet main pipe (6) to provide oxygen for biochemical reaction, the oxygen diffuses from the inside of the membrane filaments (5) to the outside of the membrane filaments and further diffuses to the surface of the three-dimensional elastic biofilm filler (4) to form a biofilm, and the oxygen supply amount can be adjusted through air inlet pressure and flow, so that the biofilms are formed on the surfaces of the membrane module (3) and the three-dimensional elastic biofilm filler (4) to purify the sewage, and the treated sewage is discharged through the water outlet pipe (8).
3. A composite membrane oxygen control bioreactor according to claim 1, characterized in that each membrane module (3) consists of 800 membrane filaments (5).
4. The composite membrane oxygen control bioreactor according to claim 1, wherein the reactor tank (1) is a rectangular steel structure with a length of 2.5 m, a width of 1.5 m and a height of 2.5 m, the inner wall is anticorrosive, and a water inlet pipe (7) and a water outlet pipe (8) are respectively arranged on two sides of the reactor tank (1).
5. The composite membrane oxygen control bioreactor as claimed in claim 1, wherein the membrane frame (2) has a length of 2.0 m, a width of 1.2 m and a height of 1.8 m, and the upper part is provided with a membrane module slot for installing and fixing the membrane module (3); the installation distance of each membrane module (3) is 10-15 cm.
6. The composite membrane oxygen control bioreactor according to claim 1, wherein the membrane module (3) is 1.25 m long and 1.5 m high, the membrane filaments (5) are encapsulated in epoxy resin on the upper part of the membrane module, and the lower ends of the membrane filaments (5) hang freely.
7. The composite membrane oxygen control bioreactor according to claim 1, wherein the membrane filaments (5) are hollow fiber membranes made of polytetrafluoroethylene, the outer diameter of the membrane filaments is 2.2 mm, the inner diameter of the membrane filaments is 1.4 mm, and the pore diameter of the membrane filaments is 0.2-0.3 micron.
8. The composite membrane oxygen control bioreactor as claimed in claim 1, wherein the material of the three-dimensional elastic biofilm filler (4) is polypropylene.
9. A composite membrane-controlled oxygen bioreactor according to claim 1, characterized in that the inlet manifold (6) is connected to the inlet duct at the upper part of each membrane module (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202121920314.5U CN216005353U (en) | 2021-08-17 | 2021-08-17 | Composite membrane oxygen control bioreactor |
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| CN202121920314.5U CN216005353U (en) | 2021-08-17 | 2021-08-17 | Composite membrane oxygen control bioreactor |
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| CN216005353U true CN216005353U (en) | 2022-03-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340178A (en) * | 2022-09-22 | 2022-11-15 | 浙江开创环保科技股份有限公司 | Membrane and method for regulating membrane hanging and oxygenation performance of membrane bioreactor |
| CN116986727A (en) * | 2023-07-31 | 2023-11-03 | 哈尔滨工业大学 | Device and method for reducing antibiotic stress effect by utilizing built-in aerobic layer biomembrane |
-
2021
- 2021-08-17 CN CN202121920314.5U patent/CN216005353U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340178A (en) * | 2022-09-22 | 2022-11-15 | 浙江开创环保科技股份有限公司 | Membrane and method for regulating membrane hanging and oxygenation performance of membrane bioreactor |
| CN116986727A (en) * | 2023-07-31 | 2023-11-03 | 哈尔滨工业大学 | Device and method for reducing antibiotic stress effect by utilizing built-in aerobic layer biomembrane |
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