CN108892232B - Automatic membrane bioreactor who clears up - Google Patents
Automatic membrane bioreactor who clears up Download PDFInfo
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- CN108892232B CN108892232B CN201810733047.7A CN201810733047A CN108892232B CN 108892232 B CN108892232 B CN 108892232B CN 201810733047 A CN201810733047 A CN 201810733047A CN 108892232 B CN108892232 B CN 108892232B
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- 239000012528 membrane Substances 0.000 title claims abstract description 189
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000001914 filtration Methods 0.000 claims abstract description 46
- 238000004140 cleaning Methods 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims description 26
- 239000007921 spray Substances 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 9
- 241001330002 Bambuseae Species 0.000 claims description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 9
- 239000011425 bamboo Substances 0.000 claims description 9
- 239000010802 sludge Substances 0.000 abstract description 20
- 239000010865 sewage Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Classifications
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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
-
- 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
- C02F3/102—Permeable membranes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses an automatic cleaning membrane bioreactor, belongs to the field of sewage treatment equipment, solves the problem that dirt adhered on a membrane component is difficult to separate, the technical proposal is characterized in that the device comprises a membrane biological tank, a membrane component is rotationally connected in the membrane biological tank, the membrane component comprises a rotary cylinder and a filtering membrane, the rotary cylinder is rotationally connected with the membrane biological pond, the filtering membrane is arranged on the side wall of the rotary cylinder, the membrane component is communicated with a water outlet pipe, the membrane biological tank is provided with a circulating pipe, both ends of the circulating pipe are communicated with the membrane biological tank, the membrane component cleaning device is reasonable in structure, water pressurized by the circulating pump flows back to the membrane biological pond to impact the membrane component, and sludge on the membrane component is flushed down, so that the purpose of cleaning the filtering membrane is achieved.
Description
Technical Field
The invention relates to sewage treatment equipment, in particular to an automatic cleaning membrane bioreactor.
Background
The membrane-bioreactor is a novel state wastewater treatment system organically combining membrane separation technology and biological treatment technology. The membrane component is used for replacing a secondary sedimentation tank at the tail end of the traditional biological treatment technology, the concentration of high-activity sludge is kept in a bioreactor, the organic load of biological treatment is improved, the floor area of a sewage treatment facility is reduced, and the amount of excess sludge is reduced by keeping low sludge load. Mainly utilizes the membrane separation equipment immersed in the aerobic biological tank to trap the activated sludge and macromolecular organic matters in the tank. The concentration of the activated sludge in the membrane bioreactor system can be increased to 8000-10,000 mg/L or even higher; the sludge age can be prolonged to more than 30 days.
At present, chinese patent with publication number CN206109043U discloses a membrane bioreactor, which comprises an MBR reaction tank, a membrane support, a membrane module, an aeration device and a swinging device, wherein the MBR reaction tank is provided with a water inlet and an air inlet, the membrane module is mounted on the membrane support, the membrane module is provided with a water outlet, the membrane support and the aeration device are arranged in the MBR reaction tank, the aeration device is communicated with the air inlet, the membrane support is rotatably erected in the MBR reaction tank, and the swinging device penetrates through the membrane support. The during operation sways device drive membrane support and reciprocates in MBR reaction tank, and then realizes the swing of membrane module, and then produces the friction with the sewage in the MBR reaction tank and rocks, makes the difficult adhesion filth of membrane module in the use or makes the filth of gluing break away from, has avoided the problem of membrane jam.
A different technical scheme is provided at present, and the problem that dirt adhered on a membrane component is difficult to separate is solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an automatic cleaning membrane bioreactor, water pressurized by a circulating pump flows back to a membrane biological tank to impact a membrane component, and sludge on the membrane component is washed down, so that the aim of cleaning a filtering membrane is fulfilled.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automatic membrane bioreactor of clearance, includes the membrane biological pond, it is connected with the membrane module to rotate in the membrane biological pond, the membrane module is including rotating a section of thick bamboo and filtration membrane, it rotates to rotate a section of thick bamboo and connects in the membrane biological pond to rotate, filtration membrane sets up on rotating a section of thick bamboo lateral wall, the membrane module intercommunication has the outlet pipe, the membrane biological pond is equipped with the circulating pipe, the circulating pipe both ends all communicate with the membrane biological pond, the circulating pipe is equipped with the circulating pump, let in gas in the circulating pipe, the delivery port of circulating pipe is located the membrane module.
By adopting the technical scheme, the water in the membrane biological pond is pumped out by the circulating pump and then mixed with gas, and then is conveyed back to the membrane biological pond again, so that the amount of bubbles contained in the water in the membrane biological pond is increased, enough oxygen is provided for the reproduction and growth of activated sludge in the water, and a nitrogen source and inorganic salts in the sewage are consumed, the chemical oxygen demand in the sewage is effectively reduced, the water pressurized by the circulating pump flows back to the membrane biological pond to impact the membrane component, and the sludge on the membrane component is washed down, so that the aim of cleaning the filtering membrane is fulfilled; when aeration is finished and treated water is discharged, the treated water passes through the filtering membrane under the action of water pressure, activated sludge is blocked outside the filtering membrane, and the water entering the membrane module is discharged outside the membrane bioreactor through the water outlet pipe.
The invention is further configured to: the membrane biological pond is rotatably connected with a driving barrel, the membrane assembly is sleeved with the driving barrel, the driving barrel comprises a plurality of inclined plates which are circumferentially arranged, a straight line where the inclined plates are located is a chord which does not pass through the circle center of the driving barrel, the circulating pipe is communicated with the driving barrel, and the driving barrel drives the membrane assembly to rotate.
By adopting the technical scheme, the circulating pump is started, water in the driving barrel is pumped out by the circulating pump, so that water above the driving barrel flows into the driving barrel, the water flows through the inclined plate and applies pressure to the inclined plate, so that driving force for rotating the driving barrel is generated, the driving barrel is rotated by the action of the water flow, and then the driving barrel is used for driving the membrane assembly to rotate; when the membrane module rotates, the water pressurized by the circulating pump can be utilized to impact the whole filtering membrane, so that the cleaning effect on the filtering membrane is further improved.
The invention is further configured to: the membrane assembly is characterized in that the driving cylinder is provided with a first driving gear, the rotating cylinder is provided with a second driving gear, the first driving gear drives the second driving gear, and the driving cylinder and the membrane assembly have different rotating speeds.
When the rotating speeds of the driving cylinder and the membrane module are the same, one part of the filtering membrane is always shielded by the inclined plate, and then the shielded part of the filtering membrane cannot be cleaned.
The invention is further configured to: the first driving gear is an inner gear ring, the membrane biological pond is rotationally connected with a planetary gear, and the planetary gear is meshed with the first driving gear and the second driving gear simultaneously.
By adopting the technical scheme, the inner gear ring is driven to rotate when the driving cylinder rotates, the inner gear ring drives the planetary gear to rotate, the planetary gear rotates to further drive the second driving gear to rotate, the second driving gear drives the rotating cylinder to rotate, and the rotation directions of the inner gear ring and the second driving gear are different, so that the driving cylinder and the rotating cylinder rotate in opposite directions, more parts of the filtering membrane can be impacted by water pressurized by the circulating pump, and the cleaning effect on the filtering membrane is further improved.
The invention is further configured to: the spray pipe is communicated with the water outlet of the circulating pipe, the spray pipe is parallel to the rotation center line of the driving cylinder, the spray pipe is provided with a plurality of nozzles, and the nozzles are aligned to the membrane assembly.
Through adopting above-mentioned technical scheme, utilize a plurality of nozzles to strike the membrane module, make more areas of filtration membrane length direction washed, further increase the clean effect to filtration membrane.
The invention is further configured to: the nozzle is aligned to the rotation center line of the driving cylinder, and the plane where the inclined plate is located is tangent to the filtering membrane.
By adopting the technical scheme, the water after the circulating pump is pressurized impacts the inclined plate, the direction of the water flow is changed by utilizing the inclined plate, and the water flow flows along the inclined direction of the inclined plate, so that the water flow is tangent to the filtering membrane, the impact force on the membrane is reduced, the possibility that the filtering membrane is broken by the water flow is reduced, and the inclined effect is not influenced.
The invention is further configured to: the coaxial fixedly connected with first installation department of a section of thick bamboo rotates, the coaxial fixedly connected with second installation department of a driving drum, first installation department is arranged in the second installation department and both rotate and are connected, the outlet pipe passes first installation department and rotates with first installation department and be connected.
Through adopting above-mentioned technical scheme, utilize first installation department and second installation department to realize rotating the coaxial rotation of a section of thick bamboo and a driving drum and be connected.
The invention is further configured to: the second installation department is located to circulating pipe pot head, is close to the through-hole has been seted up to the second installation department of circulating pipe, the through-hole is with circulating pipe and rotation section of thick bamboo intercommunication.
Through adopting above-mentioned technical scheme, under the effect of circulating pump, the water in the drive cylinder passes through the through-hole and gets into in the circulating pipe to make drive cylinder and membrane biological pond connection structure simple stable.
The invention is further configured to: be equipped with first antifriction bearing between first installation department and the second installation department, be equipped with second antifriction bearing between second installation department and the membrane biological pond.
Through adopting above-mentioned technical scheme, utilize first antifriction bearing and second antifriction bearing's reduction to rotate between section of thick bamboo and the driving cylinder and the membrane biological pond between frictional force, and then make driving cylinder and a rotation section of thick bamboo rotate more smoothly.
The invention is further configured to: an oil seal is arranged between the first installation part and the second installation part.
Through adopting above-mentioned technical scheme, utilize the oil blanket to reduce sewage and flow out from the junction of first installation department and second installation department.
In conclusion, the invention has the following beneficial effects:
firstly, water pressurized by a circulating pump flows back to a membrane biological tank to impact a membrane module in a rotating state, so that sludge on the membrane module is flushed down, and the purpose of cleaning a filtering membrane is achieved;
secondly, water flows by using the circulating pump, the flowing water generates a driving force for driving the driving cylinder to rotate, the driving cylinder rotates by using the action of the water flow, and then the driving cylinder drives the membrane assembly to rotate, so that a linkage effect is generated, driving pieces are reduced, and the cost is saved;
thirdly, the rotating speed and the rotating direction of the driving cylinder and the membrane module are different, so that more parts of the filtering membrane can be impacted by the water pressurized by the circulating pump, and the cleaning effect on the filtering membrane is further improved.
Drawings
FIG. 1 is a sectional view of the present embodiment;
FIG. 2 is a sectional view of the present embodiment showing a membrane module;
FIG. 3 is a cross-sectional view of the present embodiment for showing a driving cycle structure;
FIG. 4 is an enlarged view of portion A of FIG. 3;
fig. 5 is an enlarged view of a portion B of fig. 3.
Reference numerals: 1. a membrane biological pond; 11. a water inlet pipe; 12. a water outlet pipe; 121. discharging the water pump; 2. a membrane module; 21. a rotating cylinder; 22. a filtration membrane; 23. a first mounting portion; 231. a first rolling bearing; 232. oil sealing; 24. a planetary gear set; 241. a first drive gear; 242. a planetary gear; 243. a second drive gear; 3. a drive cycle structure; 31. a drive cylinder; 311. an end cap; 312. a sloping plate; 313. a second mounting portion; 314. a through hole; 315. a second rolling bearing; 32. a circulation pipe; 321. an air inlet pipe; 322. a nozzle; 323. a nozzle; 33. and a circulating pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
An automatic cleaning membrane bioreactor, as shown in figure 1, comprises a membrane biological tank 1, a membrane component 2 and a driving circulation structure 3, wherein activated sludge is cultivated in the membrane biological tank 1, the membrane biological tank 1 is communicated with a water inlet pipe 11 and a water outlet pipe 12, and sewage is conveyed into the membrane biological tank 1 by the water inlet pipe 11. The membrane component 2 is rotationally connected with the membrane biological tank 1, the water outlet pipe 12 is communicated with the interior of the membrane component 2, and the sewage filtered by the membrane component 2 is output from the water outlet tank to the membrane biological tank 1. The driving circulation structure 3 drives the membrane component 2 to rotate, and increases the amount of bubbles contained in the water in the membrane biological pond 1, so that enough oxygen is available in the water for the reproduction and growth of the activated sludge and the consumption of nitrogen sources and inorganic salts in the sewage, thereby effectively reducing the chemical oxygen demand in the sewage.
As shown in fig. 1 and 2, the membrane module 2 includes a rotary cylinder 21 and a filter membrane 22, a plurality of through holes 314 are opened on a side wall of the rotary cylinder 21, and the filter membrane 22 is cylindrically sleeved on the rotary cylinder 21 and fixedly connected to the rotary cylinder 21 by bolts. The right side of the rotating cylinder 21 is communicated with a water outlet pipe 12, and the water outlet pipe 12 is connected with a water outlet pump 121. After aeration is finished, the water outlet pump 121 is started to pump water out of the rotary cylinder 21, so that pressure difference is formed between the inside and the outside of the rotary cylinder 21, water outside the rotary cylinder 21 rapidly passes through the filtering membrane 22 under the action of the pressure difference, and then is discharged out of the membrane bioreactor through the water outlet pipe 12, and activated sludge in the membrane biological pond 1 is blocked outside the filtering membrane 22 by the filtering membrane 22. When water in the rotary cylinder 21 is pumped out, water outside the membrane module 2 enters from the upper end of the rotary cylinder 21, so that more sludge is concentrated at the upper end of the filtering membrane 22, and in order to solve the technical problem, the membrane module 2 is driven to rotate by the driving and circulating structure 3, so that the filtering membrane 22 rotates, and the activated sludge can be uniformly distributed on the filtering membrane 22.
As shown in fig. 1 and 2, the driving circulation structure 3 includes a driving drum 31, a circulation pipe 32, and a circulation pump 33. Wherein the driving cylinder 31 is coaxially sleeved on the rotating cylinder 21 and is in rotating connection with the rotating cylinder 21. The driving cylinder 31 comprises two end covers 311 and inclined plates 312, the two end covers 311 are vertical to the rotation axis of the driving cylinder 31, the plurality of inclined plates 312 are provided, two ends of each inclined plate are fixedly connected with the two end covers 311, the inclined plates 312 are circumferentially arranged by the rotation center line of the driving cylinder 31, and the straight line where the inclined plates 312 are located is a chord which does not pass through the circle center of the driving cylinder 31. When the membrane module 2 discharges water out of the membrane bioreactor, the water in the membrane biological pool 1 flows into the driving cylinder 31 from the upper part and then flows into the membrane module 2; when water flows into the drive cylinder 31, the water flows through the swash plate 312 and applies pressure to the swash plate 312, thereby generating a driving force for rotating the drive cylinder 31, and rotating the drive cylinder 31 by the action of the water flow.
As shown in FIGS. 1 and 2, one end of the circulation pipe 32 is communicated with the driving cylinder 31, and the other end thereof passes through the sidewall of the membrane biological tank 1 to extend into the membrane biological tank 1 and is located below the driving cylinder 31, and the circulation pump 33 is installed at the circulation pipe 32. The circulation pipe 32 communicates with an intake pipe 321, and one end of the intake pipe 321 communicating with the intake pipe 321 is located between the circulation pump 33 and the driving cylinder 31, and compressed air is supplied into the circulation pipe 32 through the intake pipe 321. The circulating pump 33 pumps out the water in the driving cylinder 31, so that more water flows into the driving cylinder 31, the force of the water flow on the driving cylinder 31 is increased, and the driving cylinder 31 can rotate more smoothly; when the water in the driving cylinder 31 returns to the membrane biological tank 1 through the circulating pipe 32, the air inlet pipe 321 enables a large amount of compressed air to be mixed into the water, and the compressed air is conveyed into the membrane biological tank 1, so that the amount of air bubbles in the water in the membrane biological tank 1 is increased, enough oxygen is provided in the water for the reproduction and growth of activated sludge, and a nitrogen source and inorganic salts in the sewage are consumed, and the chemical oxygen demand in the sewage is effectively reduced.
As shown in FIGS. 1 and 2, a spray pipe 322 communicated with the water outlet of the circulation pipe 32, the spray pipe 322 being parallel to the rotation center line of the rotary drum 21, the spray pipe 322 being provided with a plurality of nozzles 323, the nozzles 323 being directed to the membrane module 2. The membrane module 2 is impacted by the plurality of nozzles 323 through the gap between the inclined plates 312, so that a larger area in the longitudinal direction of the filtration membrane 22 is washed, and the cleaning effect on the filtration membrane 22 is further increased. In order to reduce the damage of the water flow to the filtering membrane 22, the plane of the inclined plate 312 is tangent to the filtering membrane 22, the water pressurized by the circulating pump impacts on the inclined plate 312, the direction of the water flow is changed by the inclined plate 312, the water flow flows along the inclined direction of the inclined plate 312, so that the water flow is tangent to the filtering membrane 22, the impact force on the membrane is reduced, the possibility that the filtering membrane 22 is broken by the water flow is reduced, the cleaning effect is not influenced, and the inclined plate 312 applies thrust when the water flow impacts on the inclined plate 312, so that the driving force for driving the cylinder 31 to rotate is increased.
As shown in fig. 3 and 4, the first mounting portion 23 is coaxially and fixedly connected to both ends of the rotary cylinder 21, and the second mounting portion 313 is coaxially and fixedly connected to each end cover 311, wherein each of the first mounting portion 23 and the second mounting portion 313 has a cylindrical shape. The first mounting portion 23 is disposed on the second mounting portion 313 and is rotatably coupled thereto, and a first rolling bearing 231 is mounted between the first mounting portion 23 and the second mounting portion 313 in order to reduce a frictional force between the first mounting portion 23 and the second mounting portion 313. The second mounting part 313 is rotatably connected to a sidewall of the membrane biological tank 1, and a second rolling bearing 315 is mounted between the second mounting part 313 and the sidewall of the membrane biological tank 1 in order to reduce a frictional force between the second mounting part 313 and the sidewall of the membrane biological tank 1. The water outlet pipe 12 passes through the second mounting portion 313 on the right side and communicates with the first mounting portion 23 through a rotary joint. The circulation tube 32 is sleeved on the second mounting part 313 on the left side, a rotary joint is also arranged between the circulation tube 32 and the second mounting part 313, and a plurality of through holes 314 for communicating the circulation tube 32 and the rotary cylinder 21 are formed in the circumferential direction of the second mounting part 313. An oil seal 232 is arranged between the first mounting part 23 and the second mounting part 313, the oil seal 232 is arranged between the through hole 314 and the first rolling bearing 231, and the first rolling bearing 231 is less damaged by sewage.
As shown in fig. 3 and 5, the planetary gear set 24 is mounted between the right second mounting portion 313 and the right first mounting portion 23. The planetary gear set 24 includes a first driving gear 241, a second driving gear 243 and a planetary gear 242, wherein the first driving gear 241 is an inner gear ring coaxially and fixedly connected to the second mounting portion 313, the second driving gear 243 is coaxially and fixedly connected to the first mounting portion 23, the planetary gear 242 is simultaneously engaged with the first driving gear 241 and the second driving gear 243, and the planetary gear 242 is rotatably connected to the sidewall of the membrane biological pond 1. When the driving barrel 31 rotates, the inner gear ring is driven to rotate, the inner gear ring rotates to drive the planetary gear 242 to rotate, the planetary gear 242 rotates to drive the second driving gear 243 to rotate, the second driving gear 243 drives the rotating barrel 21 to rotate, and the rotation directions of the inner gear ring and the second driving gear 243 are different, so that the driving barrel 31 and the rotating barrel 21 rotate in opposite directions, more parts of the filtering membrane 22 can be impacted by water pressurized by the circulating pump 33, and the cleaning effect on the filtering membrane 22 is further improved.
The specific working mode is as follows: the sewage is conveyed into the membrane biological tank 1 through the water inlet pipe 11, then the circulating pump 33 is started, the water in the driving cylinder 31 is pumped out and then mixed with compressed air and then conveyed into the membrane biological tank 1 again, so that enough oxygen is available in the water for the reproduction and growth of activated sludge and the nitrogen source and inorganic salt in the sewage are consumed, and the chemical oxygen demand in the sewage is effectively reduced. Then, the water pump 121 is started to pump away the water in the rotary drum 21, the water outside the rotary drum 21 rapidly passes through the filtering membrane 22 under the action of pressure difference, and then is discharged out of the membrane bioreactor through the water outlet pipe 12, and the activated sludge in the membrane organisms is blocked outside the filtering membrane 22 by the filtering membrane 22.
The nozzle 323 impacts the driving cylinder 31, and the driving cylinder 31 is rotated by the water flow. The driving drum 31 rotates and then drives the rotary drum 21 to rotate through the planetary gear set 24, thereby rotating the filter membrane 22. The water in the water spray pipe is guided by the inclined plate 312 to impact and clean the filtering membrane 22, so that the filtering membrane 22 is cleaned.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides an automatic membrane bioreactor of clearance, includes membrane biological pond (1), membrane biological pond (1) internal rotation is connected with membrane module (2), characterized by: the membrane module (2) comprises a rotating cylinder (21) and a filtering membrane (22), the rotating cylinder (21) is rotatably connected to the membrane biological pond (1), the filtering membrane (22) is arranged on the side wall of the rotating cylinder (21), the membrane module (2) is communicated with a water outlet pipe (12), the membrane biological pond (1) is provided with a circulating pipe (32), two ends of the circulating pipe (32) are communicated with the membrane biological pond (1), the circulating pipe (32) is provided with a circulating pump (33), gas is introduced into the circulating pipe (32), and a water outlet of the circulating pipe (32) is positioned below the membrane module (2); the membrane biological pond (1) is rotatably connected with a driving cylinder (31), the driving cylinder (31) is sleeved on the membrane assembly (2), the driving cylinder (31) comprises a plurality of inclined plates (312), the inclined plates (312) are circumferentially arranged, a straight line where the inclined plates (312) are located is a chord which does not pass through the circle center of the driving cylinder (31), the circulating pipe (32) is communicated with the driving cylinder (31), and the driving cylinder (31) drives the membrane assembly (2) to rotate; the driving barrel (31) is provided with a first driving gear (241), the rotating barrel (21) is provided with a second driving gear (243), the first driving gear (241) drives the second driving gear (243), and the driving barrel (31) and the membrane assembly (2) have different rotating speeds; the spray pipe (322) is communicated with the water outlet of the circulating pipe (32), the spray pipe (322) is parallel to the rotation center line of the driving cylinder (31), the spray pipe (322) is provided with a plurality of nozzles (323), and the nozzles (323) are aligned to the membrane module (2); the nozzle (323) is aligned with the rotation center line of the driving cylinder (31), and the plane of the inclined plate (312) is tangent to the filtering membrane (22).
2. The membrane bioreactor for automatic cleaning according to claim 1, wherein: the first driving gear (241) is an inner gear ring, the membrane biological pond (1) is rotatably connected with a planetary gear (242), and the planetary gear (242) is meshed with the first driving gear (241) and the second driving gear (243) simultaneously.
3. The membrane bioreactor for automatic cleaning according to claim 1, wherein: the coaxial fixedly connected with first installation department (23) of a section of thick bamboo (21) rotates, the coaxial fixedly connected with second installation department (313) of a driving cylinder (31), first installation department (23) are arranged in second installation department (313) and both rotate and are connected, outlet pipe (12) pass first installation department (23) and rotate with first installation department (23) and be connected.
4. An automatic cleaning membrane bioreactor as claimed in claim 3, wherein: one end of the circulating pipe (32) is sleeved on the second mounting part (313), a through hole (314) is formed in the second mounting part (313) close to the circulating pipe (32), and the circulating pipe (32) is communicated with the rotating cylinder (21) through the through hole (314).
5. The membrane bioreactor for automatic cleaning according to claim 4, wherein: be equipped with first antifriction bearing (231) between first installation department (23) and second installation department (313), be equipped with second antifriction bearing (315) between second installation department (313) and membrane biological pond (1).
6. An automatic cleaning membrane bioreactor as claimed in claim 5, wherein: an oil seal (232) is provided between the first mounting portion (23) and the second mounting portion (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810733047.7A CN108892232B (en) | 2018-07-05 | 2018-07-05 | Automatic membrane bioreactor who clears up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810733047.7A CN108892232B (en) | 2018-07-05 | 2018-07-05 | Automatic membrane bioreactor who clears up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108892232A CN108892232A (en) | 2018-11-27 |
| CN108892232B true CN108892232B (en) | 2021-02-26 |
Family
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| CN201810733047.7A Expired - Fee Related CN108892232B (en) | 2018-07-05 | 2018-07-05 | Automatic membrane bioreactor who clears up |
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| CN113087138B (en) * | 2021-03-24 | 2022-10-28 | 广州市天河区林和粤财技术服务中心 | Dynamic rotating film anaerobic bioreactor |
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| CN106925128A (en) * | 2016-05-23 | 2017-07-07 | 中科瑞阳膜技术（北京）有限公司 | A kind of membrane bioreactor and its rolled membrane module |
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- 2018-07-05 CN CN201810733047.7A patent/CN108892232B/en not_active Expired - Fee Related
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| ES2408182T3 (en) * | 2004-11-19 | 2013-06-18 | Vlaamse Instelling Voor Technologisch Onderzoek (Vito) | Hair membranes |
| CN1935689A (en) * | 2006-10-19 | 2007-03-28 | 北京科技大学 | Apparatus and method for treating sewage by air-lift internal circulating membrane bioreactor |
| CN203999113U (en) * | 2014-06-27 | 2014-12-10 | 北京赛诺膜技术有限公司 | A kind of pulse aerating apparatus and comprise the MBR film system of this device |
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| CN106186564A (en) * | 2016-08-30 | 2016-12-07 | 广德清源水处理设备有限公司 | Membrane bioreactor sewage purification system and operational approach thereof |
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| CN108892232A (en) | 2018-11-27 |
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