CN113023880A - Aeration device of MBR (membrane bioreactor) - Google Patents
Aeration device of MBR (membrane bioreactor) Download PDFInfo
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- CN113023880A CN113023880A CN202110258931.1A CN202110258931A CN113023880A CN 113023880 A CN113023880 A CN 113023880A CN 202110258931 A CN202110258931 A CN 202110258931A CN 113023880 A CN113023880 A CN 113023880A
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- aeration
- tank body
- membrane bioreactor
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- mbr
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- 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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- 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
Abstract
The invention belongs to the technical field of water treatment, and relates to an aeration device of an MBR (membrane bioreactor), which is a tank body with bottom openings at the bottom, side aeration holes at two sides and top aeration holes at the top, wherein two ends of the tank body are sealed and only an aeration pipe interface for connecting an aeration air inlet pipe is reserved, the aperture of the bottom openings is as large as possible and is used as a sludge discharge channel to reduce the risk of sludge deposition and blockage, the side aeration holes and the top aeration holes are used as the aeration holes, the bottom openings are arranged at the bottom of the aeration pipe and are used as the sludge discharge channel, when the aeration is stopped, sludge and water mixture enters the tank body of the aeration device, most of sludge can be discharged through the bottom openings at the bottom of the tank body, and when the next aeration is started, sludge remained on an inner partition plate of the tank body can be discharged due to the disturbance of air flow, can not be blocked, so that the MBR equipment can run more stably, and the working efficiency of the sewage treatment equipment is improved.
Description
Technical Field
The invention belongs to the technical field of water treatment, relates to a membrane reactor sewage treatment device, and particularly relates to an aeration device of an MBR (membrane bioreactor).
Background
The advanced treatment of sewage refers to the further water treatment process of reusing sewage as water resource for production or life after primary and secondary treatment of urban domestic sewage or industrial wastewater in order to reach certain standard of reclaimed water. Aiming at the raw water quality of the sewage (wastewater) and the water quality requirement after treatment, a three-stage treatment or multi-stage treatment process can be further adopted. Is used for removing trace COD and BOD organic pollutants, SS, high-concentration nutrient substances of nitrogen and phosphorus and salts in water. The deep treatment method comprises the following steps: physical and chemical methods such as flocculation precipitation, sand filtration, activated carbon, ozone oxidation, membrane separation, ion exchange, electrolysis, wet oxidation, catalytic oxidation, and evaporative concentration, biological denitrification and dephosphorization.
The membrane technology, which is a novel high-efficiency separation technology generated in the 60's of the 20 th century, means that a plurality of components are separated and purified through a structural membrane made of a specific material under the promotion of external pressure or osmotic pressure. In recent years, the membrane separation technology is rapidly developed under the guidance of national relevant industrial policies based on self advantages, is widely applied to the fields of municipal wastewater treatment and reuse, municipal water supply treatment, industrial wastewater treatment and recycling, high-end ultrapure water preparation and the like, has great potential in the secondary effluent of urban advanced wastewater treatment, mainly uses Ultrafiltration (UF), Microfiltration (MF) and nanofiltration (DF), and has good effect on the removal of main pollutants. Meanwhile, with the concern and importance of people on the safety of drinking water, the membrane technology can quickly become indispensable force in water treatment, and mainly has the characteristics of large development potential and self-identity.
In recent years, membrane technology has become an indispensable core technology for advanced treatment of various sewage and wastewater or high-quality reclaimed water, and researches prove that DF has a very good effect on advanced treatment of high-salinity sewage and refractory organic wastewater and dye wastewater and high-quality recycling treatment of municipal sewage and wastewater. The continuous membrane filtration system is a high-efficiency and energy-saving membrane treatment technology, and compared with the traditional sewage treatment, the continuous membrane filtration system has the advantages of simple process operation, high effluent quality, stable treatment effect and the like, thereby being widely applied to the field of water treatment. The separation mechanism is a sieve mesh separation mechanism, the treatment liquid is subjected to membrane filtration under certain pressure, molecules or particles with the size smaller than the separation pore diameter of the membrane can pass through the surface of the membrane, and the molecules or particles with the size larger than the separation pore diameter of the membrane are intercepted, so that the separation of the large particles and the small particles is realized.
In membrane technology, Membrane Bioreactor (MBR) is a sewage treatment process developed in recent years, and utilizes the physical separation capacity of the membrane to completely separate hydraulic retention time from sludge retention time, thereby achieving the purpose of improving sewage treatment capacity and effect by utilizing high sludge concentration. Because of the characteristics of good effluent quality, small floor area, good mud-water separation effect and the like, the method is being applied and popularized more and more. The conventional Membrane Bioreactor (MBR) is mainly structured in such a way that a plurality of hollow fiber membranes are arranged on a stainless steel membrane frame, and an aeration pipe is arranged at the lowest part of the membrane frame. When the device is operated, the membrane rack with the membranes is placed into a sewage pool according to the position arranged in advance, and water is produced by pumping through a suction pump. The suction can generate negative pressure in the hollow fiber membrane, so that the clean water penetrates into the hollow fiber membrane through the micropores on the surface of the membrane filaments and then enters the clean water tank through the pipeline. And pollutants (such as sludge) cannot enter the membrane through the micropores due to large particle size and are trapped outside the membrane, so that sludge-water separation is realized.
Along with the operation of MBR, pollutants such as mud can lead to the membrane pore to block up on the membrane surface, reduces the filtration efficiency of membrane, consequently needs the aeration to wash away the membrane surface, slows down the accumulation of pollutant. At present, most of aeration is carried out by perforated pipes, and because the aeration pipes are easily blocked by sludge at the bottom of a biochemical pool, the aeration is reduced, even if no aeration is carried out in a certain area, the membrane pollution is accelerated indirectly. The main reason is that in the operation process, aeration is temporarily stopped due to subjective or objective reasons, muddy water flows backwards into the aeration pipe, sludge is deposited at the bottom of the air pipe, when the aeration is restarted, the muddy water in the air pipe can be extruded by air flow, but partial deposited sludge is difficult to avoid remaining at the bottom of the aeration pipe, and the blockage of an aeration hole and the aeration pipe can be caused after long-time operation.
In order to solve the problems in the prior art, the invention provides a novel aeration device of an MBR (membrane bioreactor).
Disclosure of Invention
The invention aims to provide a novel aeration device of an MBR membrane bioreactor, aiming at the technical defects in the prior art, the aeration device can effectively avoid the blockage of an aeration pipe, reduce the probability of shutdown maintenance of sewage treatment equipment caused by the blockage of the aeration pipe, ensure the normal operation of sewage treatment work, ensure the operation of MBR equipment to be more stable and improve the working efficiency of the sewage treatment equipment.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an aeration device of an MBR membrane bioreactor comprises a tank body, wherein aeration pipe connectors are arranged at two ends of the tank body, a top aeration hole is formed in the top of the tank body, a side aeration hole is formed in the side wall of the tank body, and a bottom opening is formed in the bottom of the tank body.
Preferably, the two ends of the groove body are closed and only provided with an aeration pipe interface.
Preferably, the pore diameter of the top aeration hole is smaller than that of the side aeration hole.
Preferably, the pore diameter of the bottom opening is larger than that of the side aeration hole.
Preferably, the top aeration holes, the side aeration holes and the bottom openings are uniformly or non-uniformly arranged.
Preferably, the tank body is a stainless steel tank body or an engineering plastic tank body.
Preferably, the material of the interface of the aeration pipe comprises one of PP, PA, PE, TPE, silica gel, rubber, PVC, PFA, FEP, F46 and fluorinated ethylene propylene.
Preferably, the engineering plastic includes one of polyphenylene sulfide (PPS), Polysulfone (PSF), Polyarylsulfone (PASF), Polysulfone Ether (PES), Polyimide (PI), Polyarylate (PAR), Liquid Crystal Polymer (LCP), Polyetheretherketone (PEEK), fluoropolymer (PTFE, PVDF, PCTFE, PFA), glass fiber reinforced PPS, Polyetherimide (PEI), Polyaminobismaleimide (PABM), polyamide-imide (PAI), poly-pyromellitic-tetramimide (PMMI), poly-p-phenylene terephthalamide (PPTA), and poly-p-benzamide (PBA).
The aeration device of the MBR membrane bioreactor is a tank body with an opening at the bottom, aeration holes at the side surfaces at the two sides and aeration holes at the top, and the aeration device can be a rectangular tank body, a cylindrical tank body, a polyhedral cubic tank body, a cuboid tank body and the like, preferably is a cuboid tank body, and the tank body is preferably made of stainless steel or engineering plastics. Two ends of the tank body are sealed and only an aeration pipe interface for connecting an aeration air inlet pipe is reserved. The aperture of bottom trompil is as big as possible, as row's mud passageway, reduces the risk that mud deposit blockked up, and side aeration hole and top aeration hole regard as the aeration hole to use, compromise aeration equipment both sides and the membrane pile directly over, do not keep the aeration dead angle as far as possible.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the bottom opening is formed in the bottom of the aeration pipe and is used as a sludge discharge channel of sludge, when aeration is stopped, sludge-water mixture enters the tank body of the aeration device, most of the sludge is discharged through the bottom opening at the bottom of the tank body after sedimentation, and a small part of sludge remained on the partition plate in the tank body is discharged due to disturbance of air flow when next aeration is started, so that aeration holes and the aeration pipe cannot be blocked, the operation of MBR equipment is more stable, and the working efficiency of sewage treatment equipment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 side view of an aeration apparatus for an MBR membrane bioreactor of the present invention;
FIG. 2 is a schematic top view of an aeration apparatus for an MBR membrane bioreactor of the present invention;
FIG. 3 is a schematic bottom view of an aeration apparatus for an MBR membrane bioreactor of the present invention;
FIG. 4 is a schematic end view of an aeration apparatus for an MBR membrane bioreactor of the present invention.
In the figure: the aeration pipe comprises an aeration pipe connector-1, side aeration holes-2, a side wall-3, top aeration holes-4, a top-5, bottom openings-6, a partition-7 and a tank body-8.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
The utility model provides an aeration equipment of MBR membrane bioreactor, includes the cell body 8, the both ends of cell body 8 are equipped with aeration pipe interface 1, and the top 5 of cell body 8 is provided with top aeration hole 4, and the lateral wall 3 of cell body 8 is provided with side aeration hole 2, and the bottom of cell body 8 is provided with bottom trompil 6.
In order to connect an aeration gas supply pipeline and ensure the tightness of an aeration device to prevent gas leakage, the two ends of the tank body 8 are sealed and only provided with the aeration pipe interfaces 1.
In practical use, the aeration device of the invention has a structure of a cuboid tank body 8 with a bottom opening 6 at the bottom, side aeration holes 2 at two sides and a top aeration hole 4 at the top, the tank body 8 can also be a rectangular tank body, a cylindrical tank body, a multi-face cubic tank body, a cuboid tank body and the like, the tank body is preferably made of stainless steel or engineering plastics, and two ends of the tank body are closed and only an aeration pipe interface for connecting an aeration air inlet pipe is reserved.
A row of side aeration holes 2 are respectively opened on two side walls, a row of top aeration holes 4 are opened on the top, the aperture of the top aeration holes 4 is slightly smaller than that of the side aeration holes 2, the aperture of the bottom opening holes 6 is larger than that of the side aeration holes 2 and the top aeration holes 4, the side aeration holes 2 and the top aeration holes 4 are mainly used for aeration, and the bottom opening holes 6 are mainly used for sludge discharge.
The bottom opening 6 of the aeration device of the invention has larger large aperture, but the aeration hole is not easy to escape in general, because the aeration holes are arranged at the two sides and the top, the air flow can go through the side aeration hole 2 and the top aeration hole 4, and can not go down.
The aperture of the top aeration hole 4 of the aeration device is slightly smaller than that of the side aeration hole 2, and the main reason is that the water pressure of the side aeration hole 2 is larger than that of the top aeration hole 4 in the operation process of the equipment, so the aperture of the side aeration hole 2 is increased and the air outlet resistance of the side aeration hole 2 is reduced by reducing the aperture of the top aeration hole 4 and increasing the air outlet resistance of the top aeration hole 4, and the air outlet resistances of the side aeration hole 2 are balanced, thereby avoiding the problem that only the top aeration hole 4 is used for air outlet and the side aeration hole 2 is not used for air outlet in aeration.
The top aeration holes 4, the side aeration holes 2 and the bottom openings 6 are uniformly or non-uniformly arranged, and generally, the openings are uniformly arranged.
According to the requirement, the tank body is a stainless steel tank body or an engineering plastic tank body, the material of the aeration pipe interface comprises one of PP, PA, PE, TPE, silica gel, rubber, PVC, PFA, FEP, F46 and polyfluorinated ethylene propylene, and the engineering plastic comprises one of polyphenylene sulfide (PPS), Polysulfone (PSF), Polyarylsulfone (PASF), Polysulfone Ether (PES), Polyimide (PI), Polyarylate (PAR), Liquid Crystal Polymer (LCP), polyether ether ketone (PEEK), fluorine-containing polymer (PTFE, PVDF, PCTFE, PFA), glass fiber reinforced PPS, Polyetherimide (PEI), Polyaminobismaleimide (PABM), polyamide-imide (PAI), poly Pyromellitimide (PMMI), poly p-phenylene terephthalamide (PPTA) and poly-p-benzamide (PBA).
The aeration device of the MBR membrane bioreactor is a cuboid tank body with an opening 6 at the bottom, aeration holes 2 at the side surfaces and aeration holes 4 at the top, and is preferably made of stainless steel or engineering plastics. Two ends of the tank body are sealed and only an aeration pipe interface for connecting an aeration air inlet pipe is reserved. The aperture of bottom trompil is as big as possible, as row's mud passageway, reduces the risk that mud deposit blockked up, and side aeration hole and top aeration hole regard as the aeration hole to use, compromise aeration equipment both sides and the membrane pile directly over, do not keep the aeration dead angle as far as possible.
According to the invention, the bottom opening is formed in the bottom of the aeration pipe and is used as a sludge discharge channel of sludge, when aeration is stopped, sludge-water mixture enters the tank body of the aeration device, most of the sludge is discharged through the bottom opening at the bottom of the tank body after sedimentation, and a small part of sludge remained on the partition plate 7 in the tank body is discharged due to disturbance of air flow when next aeration is started, so that aeration holes and the aeration pipe cannot be blocked, the operation of MBR equipment is more stable, and the working efficiency of sewage treatment equipment is improved. .
In addition, it should be noted that the specific examples described in the present specification may differ in terms of formulation, process name, and the like. All equivalent or simple changes of the structure, the characteristics and the principle of the invention which are described in the patent conception of the invention are included in the protection scope of the patent of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (8)
1. An aeration device of an MBR membrane bioreactor comprises a tank body and is characterized in that aeration pipe connectors are arranged at two ends of the tank body, top aeration holes are formed in the top of the tank body, side aeration holes are formed in the side wall of the tank body, and a bottom opening is formed in the bottom of the tank body.
2. The aeration device of the MBR membrane bioreactor according to claim 1, wherein both ends of the tank body are closed and only provided with an aeration pipe interface.
3. The aeration device of the MBR membrane bioreactor of claim 1, wherein the pore size of the top aeration holes is smaller than the pore size of the side aeration holes.
4. The aeration device of the MBR membrane bioreactor according to claim 3, wherein the pore size of the bottom opening is larger than the pore size of the side aeration holes.
5. The aeration device of the MBR membrane bioreactor of claim 1, wherein the top aeration holes, the side aeration holes and the bottom openings are uniformly or non-uniformly arranged.
6. The aeration device of the MBR membrane bioreactor of claim 1, wherein the tank body is a stainless steel tank body or an engineering plastic tank body.
7. The aeration device of the MBR Membrane Bioreactor (MBR) according to claim 1, wherein the material of the aeration pipe interface comprises one of PP, PA, PE, TPE, silica gel, rubber, PVC, PFA, FEP, F46, and fluorinated ethylene propylene.
8. The aeration device of the MBR membrane bioreactor of claim 6, wherein the engineering plastic comprises one of polyphenylene sulfide (PPS), Polysulfone (PSF), Polyarylsulfone (PASF), Polysulfone Ether (PES), Polyimide (PI), Polyarylate (PAR), Liquid Crystal Polymer (LCP), Polyetheretherketone (PEEK), fluoropolymer (PTFE, PVDF, PCTFE, PFA), glass fiber reinforced PPS, Polyetherimide (PEI), Polyaminobismaleimide (PABM), polyamide-imide (PAI), Polytetramethylenetetramethyimide (PMMI), polyparaphenyleneterephthalamide (PPTA), and Polyparaphenyleneterephthalamide (PBA).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110258931.1A CN113023880A (en) | 2021-03-10 | 2021-03-10 | Aeration device of MBR (membrane bioreactor) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110258931.1A CN113023880A (en) | 2021-03-10 | 2021-03-10 | Aeration device of MBR (membrane bioreactor) |
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| CN113023880A true CN113023880A (en) | 2021-06-25 |
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| CN202110258931.1A Pending CN113023880A (en) | 2021-03-10 | 2021-03-10 | Aeration device of MBR (membrane bioreactor) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511737A (en) * | 2021-08-19 | 2021-10-19 | 王学千 | Self-air-quantity-balancing function non-blocking perforated aeration pipe and using method thereof |
| CN113860661A (en) * | 2021-11-02 | 2021-12-31 | 航天环保(北京)有限公司 | Water treatment system |
-
2021
- 2021-03-10 CN CN202110258931.1A patent/CN113023880A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511737A (en) * | 2021-08-19 | 2021-10-19 | 王学千 | Self-air-quantity-balancing function non-blocking perforated aeration pipe and using method thereof |
| CN113860661A (en) * | 2021-11-02 | 2021-12-31 | 航天环保(北京)有限公司 | Water treatment system |
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