CN112374607B - Anaerobic membrane bioreactor for sewage treatment - Google Patents
Anaerobic membrane bioreactor for sewage treatment Download PDFInfo
- Publication number
- CN112374607B CN112374607B CN202110059126.6A CN202110059126A CN112374607B CN 112374607 B CN112374607 B CN 112374607B CN 202110059126 A CN202110059126 A CN 202110059126A CN 112374607 B CN112374607 B CN 112374607B
- Authority
- CN
- China
- Prior art keywords
- pressure gas
- low
- pressure
- material layer
- filter material
- 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
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The invention discloses an anaerobic membrane bioreactor for sewage treatment, which comprises a shell and a filter material layer arranged in the shell, and also comprises: the high-pressure gas backflushing structure is arranged above the filter material layer and comprises a high-pressure gas distribution structure and a plurality of high-pressure gas nozzles arranged on the high-pressure gas distribution structure, and the openings of the high-pressure gas nozzles face the filter material layer; the low-pressure gas disturbance structure is arranged below the filter material layer and comprises a low-pressure gas distribution structure and a plurality of low-pressure gas nozzles arranged on the low-pressure gas distribution structure, and the openings of the low-pressure gas nozzles face the filter material layer. When the filter material layer is blocked, the high-pressure gas sprayed out by the high-pressure gas nozzle is used for back washing the filter material layer. When the filter material layer is not blocked, the low-pressure gas is sprayed near the filter material layer by the low-pressure gas nozzle, so that the sewage fluidity near the filter material layer is increased, and the disturbance is increased, thereby increasing the scouring action of the sewage on the filter material layer, prolonging the blocking period of the filter material layer, increasing the treatment effect of the reactor, and reducing the backwashing frequency.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an anaerobic membrane bioreactor for sewage treatment.
Background
Anaerobic treatment technology has been developed for many years and wastewater anaerobic treatment technology has been rapidly developed due to its low operating costs, its availability for biogas production and its many advantages in treating high concentrations of wastewater. Anaerobic biological treatment is to convert most of organic matters into methane and carbon dioxide under the anaerobic condition by the action of transfer anaerobe and facultative anaerobe.
At present, a filter material layer in the existing anaerobic membrane bioreactor for sewage treatment can be frequently blocked, and is not uniform enough during back washing after being blocked, so that all the blocked filter material layers cannot be cleaned, and the phenomenon that part of the blocked filter material layer is still blocked is caused. Therefore, the treatment effect of the anaerobic membrane bioreactor is greatly reduced, and the existing anaerobic membrane bioreactor is washed for multiple times, so that sludge possibly enters the water outlet pipeline along with sewage, and the water outlet pipeline is blocked after long-time accumulation.
Disclosure of Invention
In view of this, the present invention provides an anaerobic membrane bioreactor capable of prolonging the plugging period of a filter material layer and reducing the number of backwashing times.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an anaerobic membrane bioreactor for sewage treatment, includes the shell with set up in the precoat in the shell, the precoat will the inner chamber of shell divide into the membrane front side space of below and the membrane rear side space of top, still includes:
the high-pressure gas backflushing structure is arranged above the filter material layer and comprises a high-pressure gas distribution structure and a plurality of high-pressure gas nozzles arranged on the high-pressure gas distribution structure, and the openings of the high-pressure gas nozzles face the filter material layer;
the low-pressure gas disturbance structure is arranged below the filter material layer and comprises a low-pressure gas distribution structure and a plurality of low-pressure gas nozzles arranged on the low-pressure gas distribution structure, and the openings of the low-pressure gas nozzles face the filter material layer.
Preferably, the high-pressure gas distribution structure comprises a high-pressure gas supply pipeline, the high-pressure gas supply pipeline is spirally wound above the filter material layer, and a plurality of high-pressure gas nozzles are arranged at intervals along the extending direction of the high-pressure gas supply pipeline;
the low-pressure gas distribution structure comprises a low-pressure gas supply pipeline, the low-pressure gas supply pipeline is spirally wound below the filter material layer, and a plurality of low-pressure gas nozzles are arranged at intervals along the extending direction of the low-pressure gas supply pipeline.
Preferably, anaerobic membrane bioreactor still include waste gas collection portion and with the play air pipe group that waste gas collection portion connects, play air pipe group include with house steward that waste gas collection portion connects and with house steward's first branch pipe and second branch pipe, first branch pipe with high pressure air supply pipe connects, the second branch pipe with low pressure air supply pipe connects, be provided with high pressure check valve and high pressure control valve on the first branch pipe, be provided with low pressure check valve and low pressure control valve on the second branch pipe.
Preferably, the anaerobic membrane bioreactor further comprises a compressor and a booster fan, the compressor is used for compressing the biogas collected by the waste gas collecting part and then inputting the compressed biogas into the first branch pipe, and the booster fan is used for sending the biogas collected by the waste gas collecting part into the second branch pipe.
Preferably, the opening of the high-pressure gas nozzle faces to be vertical to the surface of the filter material layer;
the opening of the low-pressure gas nozzle faces to be not vertical to the surface of the filter material layer.
Preferably, the high-pressure gas nozzle comprises a high-pressure straight pipe part and a high-pressure conical pipe part connected with the high-pressure straight pipe part, wherein the small-diameter end of the high-pressure conical pipe part is connected with the high-pressure straight pipe part, the large-diameter end of the high-pressure conical pipe part is provided with a high-pressure gas outlet surface, and the high-pressure gas outlet surface is provided with a plurality of high-pressure gas outlets;
the low-pressure gas nozzle comprises a low-pressure straight pipe part and a low-pressure taper pipe part connected with the low-pressure straight pipe part, the small-diameter end of the low-pressure taper pipe part is connected with the low-pressure straight pipe part, the large-diameter end is provided with a low-pressure gas outlet face, and a plurality of low-pressure gas outlets are formed in the low-pressure gas outlet face.
Preferably, a water inlet pipe and a circulating water pipe are oppositely arranged on the side wall of the shell close to the bottom wall,
the water inlet pipe is provided with a water inlet check valve, a water inlet control valve and a water inlet backwashing pipe, and the water inlet backwashing pipe is provided with a water inlet backwashing check valve and a water inlet backwashing control valve;
the circulating water back flushing device is characterized in that a circulating water check valve, a circulating water control valve and a circulating water back flushing pipe are arranged on the circulating water pipe, and a circulating water back flushing check valve and a circulating water back flushing control valve are arranged on the circulating water back flushing pipe.
Preferably, a water outlet pipe and a uniform flow structure are arranged on the side wall of the shell close to the top wall.
Preferably, the exhaust gas collecting part comprises an air bag, squeezing plates arranged on two sides of the air bag and a driving device for driving the squeezing plates to act, the driving device can drive the squeezing plates to move relatively to squeeze the air bag, and the movement speed of the squeezing plates when the high-pressure control valve is opened is higher than that when the low-pressure control valve is opened.
Preferably, the exhaust gas collecting portion further includes a pressure detecting device for detecting the air pressure in the air bag.
In the anaerobic membrane bioreactor provided by the invention, the high-pressure gas backflushing structure is arranged above the filter material layer, the low-pressure gas disturbing structure is arranged below the filter material layer, when the filter material layer is blocked, high-pressure gas can be sprayed to the filter material layer by using a high-pressure gas nozzle in the high-pressure gas backflushing structure, and the filter material layer is backflushed by using the high-pressure gas, so that the blocked filter material layer can be effectively cleaned. When the filter material layer is not blocked, low-pressure gas is sprayed nearby the filter material layer by using a low-pressure gas nozzle in the low-pressure gas disturbance structure, so that the flowability of sewage nearby the filter material layer is increased, the disturbance is increased, the scouring effect of the sewage on the filter material layer is increased, the blocking period of the filter material layer is prolonged, the treatment effect of the reactor is greatly increased, and the backwashing frequency is reduced.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a schematic diagram illustrating the structure of an anaerobic membrane bioreactor according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an anaerobic membrane bioreactor provided by an embodiment of the invention at a high-pressure gas backflushing structure and a low-pressure gas perturbation structure;
FIG. 3 is a schematic structural diagram of a high-pressure gas distribution structure in an anaerobic membrane bioreactor according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a high-pressure gas outlet surface of a high-pressure gas nozzle in an anaerobic membrane bioreactor according to an embodiment of the present invention;
FIG. 5 is a schematic view showing the structure of an exhaust gas collecting part in an anaerobic membrane bioreactor according to an embodiment of the present invention;
FIG. 6 shows a second schematic structural diagram of an exhaust gas collecting part in an anaerobic membrane bioreactor according to an embodiment of the present invention.
In the figure:
10. a housing; 20. a filter material layer; 30. a high pressure gas backflush structure; 31. a high-pressure gas distribution structure; 311. a high pressure gas delivery conduit; 32. a high pressure gas nozzle; 321. a high-pressure straight pipe portion; 322. a high-pressure tapered pipe portion; 323. high pressure air outlet surface; 3231. a high pressure gas outlet; 40. a low pressure gas perturbation structure; 41. a low-pressure gas distribution structure; 42. a low pressure gas nozzle; 421. a low pressure straight tube portion; 422. a low pressure conical section; 50. an air outlet pipe group; 51. a first branch pipe; 511. a high pressure check valve; 512. a high pressure control valve; 52. a second branch pipe; 521. a low pressure check valve; 522. a low pressure control valve; 53. a header pipe; 60. an exhaust gas collection section; 61. an air bag; 62. a pressing plate; 63. a drive device; 631. a motor; 632. a support; 6321. a cross beam; 6322. a guide bar; 633. a ball screw; 6331. a nut; 6332. a lead screw; 70. a water inlet pipe; 71. a water inlet check valve; 72. a water inlet control valve; 73. a water inlet backwash pipe; 731. a water inlet back flushing check valve; 732. a water inlet backwashing control valve; 80. a circulating water pipe; 81. a circulating water check valve; 82. a circulating water control valve; 83. a circulating water backwashing pipe; 831. circulating water back flushing check valve; 832. a circulating water back flushing control valve; 91. a water outlet pipe; 92. and (4) a uniform flow structure.
Detailed Description
The present invention is described below based on embodiments, and it will be understood by those of ordinary skill in the art that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
Aiming at the problems of easy blockage and uneven backwashing of the existing anaerobic membrane bioreactor, the applicant finds that the existing backwashing is water washing, and because the inside of the anaerobic membrane bioreactor is filled with water, the water washing is difficult to obtain a good backwashing effect, on the basis of the problems, the application provides the anaerobic membrane bioreactor which comprises a shell 10 and a filter material layer 20 arranged in the shell 10, the filter material layer 20 divides an inner cavity of the shell 10 into a membrane front side space below and a membrane rear side space above, wastewater enters the membrane front side space below, the wastewater is filtered by the filter material layer 20, dirt is remained at the upstream side of the filter material layer 20, and the filtered water enters the membrane rear side space above. Further, the anaerobic membrane bioreactor also comprises a high-pressure gas backflushing structure 30 and a low-pressure gas disturbing structure 40, wherein the high-pressure gas backflushing structure 30 is located in the space on the rear side of the membrane, the filter material layer 20 is backflushed by the high-pressure gas backflushing structure 30, the low-pressure gas disturbing structure 40 is located in the space on the front side of the membrane, and the low-pressure gas disturbing structure 40 is used for disturbing the gas flow on the water inlet side of the filter material layer 20. Specifically, the high-pressure gas backflushing structure 30 is disposed above the filter material layer 20, and includes a high-pressure gas distribution structure 31 and a plurality of high-pressure gas nozzles 32 disposed on the high-pressure gas distribution structure 31, the high-pressure gas distribution structure 31 distributes the high-pressure gas to each high-pressure gas nozzle 32, and openings of the high-pressure gas nozzles 32 face the filter material layer 20. The low-pressure gas disturbing structure 40 is arranged below the filter material layer 20 and comprises a low-pressure gas distribution structure 41 and a plurality of low-pressure gas nozzles 42 arranged on the low-pressure gas distribution structure 41, the low-pressure gas distribution structure 41 distributes low-pressure gas to the low-pressure gas nozzles 42, and openings of the low-pressure gas nozzles 42 face the filter material layer 20.
In this way, when the filter material layer 20 is clogged, the high-pressure gas is jetted toward the filter material layer 20 by the high-pressure gas nozzle 32 of the high-pressure gas backflushing structure 30, and the filter material layer 20 is backflushed by the high-pressure gas, so that the clogged filter material layer 20 can be effectively cleaned. When the filter material layer 20 is not blocked, the low-pressure gas nozzle 42 in the low-pressure gas disturbing structure 40 is used for spraying low-pressure gas near the filter material layer 20, so that the flowability of sewage near the filter material layer 20 is increased, the disturbance is increased, the scouring effect of the sewage on the filter material layer 20 is increased, the blocking period of the filter material layer 20 is prolonged, the treatment effect of the reactor is greatly increased, and the backwashing frequency is reduced.
It should be understood that the opening of the high-pressure gas nozzle 32 described herein may be oriented perpendicular to the surface of the filter material layer 20, that is, the gas ejected from the high-pressure gas nozzle 32 is vertically ejected toward the filter material layer 20, or the opening may be oriented obliquely to the surface of the filter material layer 20, that is, the gas ejected from the high-pressure gas nozzle 32 is obliquely ejected toward the filter material layer 20. In a preferred embodiment, the opening of the high-pressure gas nozzle 32 is oriented perpendicular to the surface of the filter material layer 20, so that the gas sprayed from the high-pressure gas nozzle 32 can impact the filter material layer 20 at the maximum speed, thereby achieving a better backflushing effect.
Further preferably, as shown in fig. 2, the high-pressure gas nozzle 32 includes a high-pressure straight pipe portion 321 and a high-pressure tapered pipe portion 322 connected to the high-pressure straight pipe portion 321, a small diameter end of the high-pressure tapered pipe portion 322 is connected to the high-pressure straight pipe portion 321, and a large diameter end faces the filter material layer 20, so that the bottom of the high-pressure gas nozzle 32 is in an open umbrella-shaped structure, the coverage area of a single nozzle can be increased, the number of the high-pressure gas nozzles 32 is reduced, and the filter material layer 20 can be backwashed more uniformly. As shown in fig. 4, a high-pressure gas outlet face 323 is arranged at the large-diameter end, and a plurality of high-pressure gas outlet ports 3231 are arranged on the high-pressure gas outlet face 323, so that high-pressure gas can be uniformly sprayed onto the upper surface of the filter material layer 20, and the situation that backwashing is not complete in a local area is prevented.
The opening of the low-pressure gas nozzle 42 described here may be oriented to the filter material layer 20, that is, the opening may be oriented to be perpendicular to the surface of the filter material layer 20, that is, the gas ejected from the low-pressure gas nozzle 42 may be vertically ejected to the filter material layer 20, or the opening may be oriented to be inclined to the surface of the filter material layer 20, that is, the gas ejected from the low-pressure gas nozzle 42 may be obliquely ejected to the filter material layer 20. In a preferred embodiment, the opening of the low-pressure gas nozzle 42 is not perpendicular to the surface of the filter material layer 20, so that the propelling performance of the ejected gas to the water body can be increased, the water body generates a rotational flow, the disturbance performance and the scouring effect of the water body to the filter material layer 20 are enhanced, and the blocking frequency of the filter material layer 20 is further reduced. The low pressure gas nozzles 42 may be oriented in the same direction or in different directions, for example, in one embodiment, the openings of the low pressure gas nozzles 42 are oriented at an angle of 30 ° to the surface of the filter material layer 20 and the openings of the low pressure gas nozzles 42 are oriented in the same direction of inclination with respect to the surface of the filter material layer 20. In another embodiment, the openings of one part of the low-pressure gas nozzles 42 face in the opposite direction to the inclination direction of the openings of the other part of the low-pressure gas nozzles 42 relative to the surface of the filter material layer 20, so that dirt on the surface of the filter material layer 20 can be disturbed in multiple directions, thereby further improving the scouring effect on the filter material layer 20.
Further preferably, as shown in fig. 2, the low-pressure gas nozzle 42 includes a low-pressure straight pipe portion 421 and a low-pressure taper pipe portion 422 connected to the low-pressure straight pipe portion 421, a small diameter end of the low-pressure taper pipe portion 422 is connected to the low-pressure straight pipe portion 421, and a large diameter end faces the filter material layer 20, so that the top of the low-pressure gas nozzle 42 is in an open umbrella-shaped structure, the coverage area of a single nozzle can be increased, the number of the low-pressure gas nozzles 42 is reduced, and the filter material layer 20 can be backwashed more uniformly. The big footpath end sets up low pressure gas outlet face, be provided with a plurality of low pressure gas outlets on the low pressure gas outlet face, can spray the lower surface of filter material layer 20 with low-pressure gas uniformly.
The high-pressure gas distribution structure 31 can be any structure capable of distributing high-pressure gas in each high-pressure gas nozzle 32, for example, the high-pressure gas distribution structure 31 is a hollow disc structure, the hollow disc structure is provided with a plurality of openings, each opening is provided with one high-pressure gas nozzle 32, the hollow disc structure can realize uniform flow of gas, and uniformity of gas pressure sprayed by each high-pressure gas nozzle 32 is guaranteed. In order to ensure the gas pressure sprayed from the high-pressure gas nozzles 32, as shown in fig. 3, the high-pressure gas distribution structure 31 preferably includes a high-pressure gas supply pipe 311, the high-pressure gas supply pipe 311 is spirally wound above the filter material layer 20, and a plurality of the high-pressure gas nozzles 32 are arranged at intervals along the extending direction of the high-pressure gas supply pipe 311. The high-pressure air supply pipeline 311 is arranged in a disc shape, so that the effective service area can be increased, the filter material layer 20 can be completely covered, the filter material layer 20 is subjected to back washing without dead angles, and the phenomenon of local blockage is prevented.
The gas inlet of the high pressure gas supply pipe 311 may be located at the outermost end or at the central position, and in order to further ensure the uniformity of the gas pressure of each high pressure gas nozzle 32 on the high pressure gas supply pipe 311, it is preferable that the gas inlet of the high pressure gas supply pipe 311 is located at both the outermost end and the central position.
Similarly, the low-pressure gas distribution structure 41 may be any structure capable of distributing low-pressure gas to each low-pressure gas nozzle 42, for example, the low-pressure gas distribution structure 41 is a hollow disk structure, the hollow disk structure is provided with a plurality of openings, each opening is provided with one low-pressure gas nozzle 42, the hollow disk structure can realize uniform flow of gas, and uniformity of gas sprayed from each low-pressure gas nozzle 42 is ensured. In order to ensure the gas pressure sprayed from the low-pressure gas nozzles 42, it is preferable that the low-pressure gas distribution structure 41 includes a low-pressure gas supply pipe spirally wound below the filter material layer 20, and a plurality of the low-pressure gas nozzles 42 are provided at intervals in the extending direction of the low-pressure gas supply pipe, so that the pressure loss can be reduced as much as possible, and the impact force of the low-pressure gas on the filter material layer 20 can be ensured. The low pressure pipeline of supplying gas is the disc and arranges and to increase effective service area, can carry out complete cover with filtering material layer 20 simultaneously, and the disc is arranged and to be made gas promote the water better and rotate, produces stronger disturbance nature, strengthens the scouring action to filtering material layer 20.
It is further preferred that the openings of adjacent rings of low pressure gas nozzles 42 are inclined in opposite directions relative to the surface of the filter material layer 20, so as to create opposite gas flow disturbances, further enhancing the scouring action on the filter material layer 20.
The air inlets of the low pressure air supply pipes may be located at the outermost ends or at the central positions, and in order to further ensure the uniformity of the air pressure of the low pressure air nozzles 42 on the low pressure air supply pipes, it is preferable that the air inlets of the low pressure air supply pipes are located at both the outermost ends and the central positions.
The high-pressure gas backflushing structure 30 and the low-pressure gas disturbing structure 40 may be supplied with external air, for example, the high-pressure gas distributing structure 31 is connected to a compressor, the compressor compresses the external air, and inputs the compressed high-pressure gas into the high-pressure gas distributing structure 31, the low-pressure gas distributing structure 41 is connected to a booster fan, and the booster fan inputs the external air into the low-pressure gas distributing structure 41. Since the anaerobic membrane bioreactor itself generates biogas, it is preferable to use the biogas generated by the anaerobic membrane bioreactor as a gas source for the high-pressure gas backflushing structure 30 and the low-pressure gas disturbing structure 40 to save energy. Specifically, anaerobic membrane bioreactor still includes waste gas collection portion 60 and the group 50 of giving vent to anger of being connected with waste gas collection portion 60, give vent to anger the group 50 include with house steward 53 that waste gas collection portion 60 is connected and with house steward 53 connect first branch pipe 51 and second branch pipe 52, first branch pipe 51 with high pressure air feed pipeline 311 connects, second branch pipe 52 with low pressure air feed pipeline connects, be provided with high-pressure check valve 511 and high pressure control valve 512 on first branch pipe 51, high pressure check valve 511 is used for preventing that the inside sewage of reactor from pouring out through first branch pipe 51, and high pressure control valve 512 is normally closed valve, and control high pressure control valve 512 opens when anaerobic membrane bioreactor blocks up. The second branch pipe 52 is provided with a low-pressure check valve 521 and a low-pressure control valve 522, the low-pressure check valve 521 is used for preventing sewage in the reactor from flowing back through the second branch pipe 52, the low-pressure control valve 522 is a normally open valve, and biogas generated by the anaerobic membrane bioreactor enters the low-pressure gas disturbing structure 40 through the second branch pipe 52.
In one embodiment, the anaerobic membrane bioreactor further comprises a compressor and a booster fan, wherein the compressor and the booster fan are used for respectively forming a high-pressure gas flow and a low-pressure gas flow, specifically, the compressor is used for compressing the biogas collected by the waste gas collecting part 60 and then inputting the compressed biogas into the first branch pipe 51, and the booster fan is used for sending the biogas collected by the waste gas collecting part 60 into the second branch pipe 52. In another embodiment, as shown in fig. 5, the exhaust gas collecting portion 60 includes an air bag 61, squeezing plates 62 disposed on both sides of the air bag 61, and a driving device 63 for driving the squeezing plates 62 to move, wherein the driving device 63 can drive the squeezing plates 62 to move relatively to squeeze the air bag 61, the moving speed of the squeezing plates 62 when the high pressure control valve 512 is opened is higher than the moving speed of the squeezing plates 62 when the low pressure control valve 522 is opened, that is, when the high pressure control valve 512 is opened, the driving device 63 drives the squeezing plates 62 to move at a first moving speed to squeeze the air bag 61, when the low pressure control valve 522 is opened, the driving device 63 drives the squeezing plates 62 to move at a second moving speed to squeeze the air bag 61, the first moving speed is higher than the second moving speed, so that the outlet gas of the air bag 61 when the air bag 61 is squeezed at the first moving speed is a high pressure gas flow, the air of the air bag 61 is discharged as a low pressure air flow when the air bag 61 is pressed at the second moving speed. So, utilize a set of structure can form two kinds of air currents, saved compressor and booster fan, the structure is simpler to, the atmospheric pressure of air current can carry out infinitely variable control, in order to satisfy different atmospheric pressure demands.
The driving device 63 may be any structure capable of driving the pressing plate 62 to move, for example, the pressing plate 62 is driven to move by an air cylinder, in order to ensure the moving stability of the pressing plate 62, preferably, the driving device 63 includes a motor 631, a bracket 632, and a ball screw 633, the bracket 632 includes a cross beam 6321 and a guide rod 6322 connecting the cross beam 6321 and one pressing plate 62, the guide rod 6322 is inserted into the other pressing plate 62, a nut 6331 of the ball screw 633 is fixed to the other pressing plate 62, the screw 6332 penetrates through the cross beam 6321, and the penetrating part is fixedly connected with a motor shaft of the motor 631, so that the motor 631 drives the screw 6332 to rotate, thereby driving the other pressing plate 62 to move up and down.
In order to realize the automatic control, it is further preferable that the exhaust gas collecting portion 60 further includes a pressure detecting means for detecting the pressure in the air bag 61, when the pressure detecting means detects that the pressure in the air bag 61 reaches a predetermined value, the low pressure control valve 522 is controlled to be opened, and the driving means 63 is controlled to be operated, the pressing plate 62 is driven to move at the second moving speed to press the air bag 61, so that the automatic continuous low pressure gas flow supply is formed, and when the anaerobic membrane bioreactor is clogged, the low pressure control valve 522 is controlled to be closed, the high pressure control valve 512 is controlled to be opened, and the driving means 63 is controlled to be operated, the pressing plate 62 is driven to move at the first moving speed to press the air bag 61, so that the high pressure.
Since the biogas is continuously generated, in order to ensure that the waste gas collecting portion 60 can collect the biogas while exhausting the biogas, it is further preferable that, as shown in fig. 6, three squeezing plates 62 are provided, wherein the squeezing plates 62 at both ends are fixedly provided, the squeezing plate 62 at the middle is movably provided, a guide rod 6322 is provided between the two squeezing plates 62, the guide rod 6322 is inserted into the movable squeezing plate 62 so that the movable squeezing plate 62 can move up and down along the guide rod 6322, and the air cells 61 are provided between the fixed squeezing plates 62 at both ends and the movable squeezing plate 62, so that the squeezing plates 62 move up and down along the guide rod 6322 so as to squeeze the upper air cells 61 when the squeezing plates 62 move up, so that the upper air cells 61 are exhausted, and the lower air cells 61 are not squeezed to collect the biogas, and the lower air cells 61 are squeezed when the squeezing plates 62 move down, so that the lower air cell 61 is exhausted and the upper air cell 61 is not pressed to collect the biogas.
Further, a water inlet pipe 70 and a water circulating pipe 80 are oppositely disposed on the side wall of the housing 10 near the bottom wall, so that the front side washing of the film is realized by the circulation flow of the water inlet pipe 70 and the water circulating pipe 80. The water inlet pipe 70 is provided with a water inlet check valve 71, a water inlet control valve 72 and a water inlet backwashing pipe 73, the water inlet check valve 71 is used for preventing sewage in the reactor from running out of the water inlet pipe 70, the water inlet control valve 72 is normally open and is used for controlling water to be added into the reactor, when the water inlet pipe 70 is blocked, the water inlet backwashing pipe 73 is used for dredging through the water inlet backwashing pipe 73, the water inlet backwashing pipe 73 is provided with a water inlet backwashing check valve 731 and a water inlet backwashing control valve 732, the water inlet backwashing check valve 731 is used for preventing the sewage in the reactor from flowing backwards into the water inlet backwashing pipe 73 when the pressure in the reactor is too high, the water inlet backwashing control valve 732 is normally closed, and when the water inlet pipe 70 is blocked, the water inlet backwashing control valve 732 is opened to backwash the.
The circulating water pipe 80 is provided with a circulating water check valve 81, a circulating water control valve 82 and a circulating water backwashing pipe 83, the circulating water check valve 81 is used for preventing water in the circulating water pipe 80 from flowing back into the reactor, the circulating water control valve 82 is used for controlling the opening and closing of the circulating water pipe 80 so as to control whether the circulating washing on the front side of the membrane is carried out or not, when the circulating water pipe 80 is blocked, the circulating water backwashing pipe 83 is used for dredging, the circulating water backwashing pipe 83 is provided with a circulating water backwashing check valve 831 and a circulating water backwashing control valve 832, the circulating water backwashing check valve 831 is used for preventing sewage in the reactor from flowing back into the circulating water backwashing pipe 83 when the pressure in the reactor is too high, the circulating water backwashing control valve 832 is normally closed, and when the circulating water pipe 80 is blocked, the circulating water backwashing control valve 832 is.
Further, a water outlet pipe 91 and a flow equalizing structure 92 are disposed on the side wall of the housing 10 near the top wall, and the flow equalizing structure 92 enables the treated sewage to be uniformly discharged through the water outlet pipe 91. In a preferred embodiment, the flow homogenizing structure 92 comprises a saw tooth structure with which the water flow is homogenized.
Those skilled in the art will readily appreciate that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an anaerobic membrane bioreactor for sewage treatment, includes the shell with set up in the precoat in the shell, the precoat will the inner chamber of shell divide into the membrane front side space of below and the membrane rear side space of top, its characterized in that still includes:
the high-pressure gas backflushing structure is arranged above the filter material layer and comprises a high-pressure gas distribution structure and a plurality of high-pressure gas nozzles arranged on the high-pressure gas distribution structure, the openings of the high-pressure gas nozzles face the filter material layer, and the high-pressure gas distribution structure comprises a high-pressure gas supply pipeline;
the low-pressure gas disturbance structure is arranged below the filter material layer and comprises a low-pressure gas distribution structure and a plurality of low-pressure gas nozzles arranged on the low-pressure gas distribution structure, the openings of the low-pressure gas nozzles face the filter material layer, and the low-pressure gas distribution structure comprises a low-pressure gas supply pipeline;
the opening of the high-pressure gas nozzle faces to be vertical to the surface of the filter material layer;
the opening of the low-pressure gas nozzles faces to be not vertical to the surface of the filter material layer, and the opening of one part of the low-pressure gas nozzles faces to the opposite inclination direction of the opening of the other part of the low-pressure gas nozzles facing to the surface of the opposite filter material layer;
anaerobic membrane bioreactor still include waste gas collection portion and with the play air pipe group that waste gas collection portion connects, play air pipe group include with house steward that waste gas collection portion connects and with house steward's first branch pipe and second branch pipe of connecting, first branch pipe with high pressure air supply pipe connects, the second branch pipe with low pressure air supply pipe connects, be provided with high pressure check valve and high pressure control valve on the first branch pipe, be provided with low pressure check valve and low pressure control valve on the second branch pipe, waste gas collection portion includes gasbag, three stripper plate and is used for the drive arrangement of stripper plate action, wherein the stripper plate at both ends is fixed to be set up, and the stripper plate at middle part sets up for the activity, drive arrangement can drive stripper plate relative motion is in order to right the gasbag extrudees, when high pressure control valve opens the velocity of motion of stripper plate is higher than when the low pressure control valve opens the stripper plate The air bags are arranged between the extrusion plates at two ends and the movable extrusion plates, nuts of the ball screws are fixed on the movable extrusion plates, and the screw screws penetrate through the cross beam and penetrate out of the motor shaft of the motor to be fixedly connected with the motor.
2. The anaerobic membrane bioreactor as claimed in claim 1, wherein the high pressure gas supply pipeline is spirally wound above the filter material layer, and a plurality of high pressure gas nozzles are arranged at intervals along the extending direction of the high pressure gas supply pipeline;
the low-pressure gas supply pipeline is spirally wound below the filter material layer, and a plurality of low-pressure gas nozzles are arranged at intervals along the extending direction of the low-pressure gas supply pipeline.
3. The anaerobic membrane bioreactor as claimed in claim 1, further comprising a compressor and a booster fan, wherein the compressor is used for compressing the biogas collected by the waste gas collection part and then inputting the compressed biogas into the first branch pipe, and the booster fan is used for sending the biogas collected by the waste gas collection part into the second branch pipe.
4. The anaerobic membrane bioreactor as claimed in any one of claims 1 to 3, wherein the high pressure gas nozzle comprises a high pressure straight pipe part and a high pressure conical pipe part connected with the high pressure straight pipe part, the small diameter end of the high pressure conical pipe part is connected with the high pressure straight pipe part, the large diameter end is provided with a high pressure gas outlet surface, and the high pressure gas outlet surface is provided with a plurality of high pressure gas outlets;
the low-pressure gas nozzle comprises a low-pressure straight pipe part and a low-pressure taper pipe part connected with the low-pressure straight pipe part, the small-diameter end of the low-pressure taper pipe part is connected with the low-pressure straight pipe part, the large-diameter end is provided with a low-pressure gas outlet face, and a plurality of low-pressure gas outlets are formed in the low-pressure gas outlet face.
5. The anaerobic membrane bioreactor as claimed in any one of claims 1 to 3, wherein a water inlet pipe and a water circulating pipe are oppositely arranged on the side wall of the housing near the bottom wall,
the water inlet pipe is provided with a water inlet check valve, a water inlet control valve and a water inlet backwashing pipe, and the water inlet backwashing pipe is provided with a water inlet backwashing check valve and a water inlet backwashing control valve;
the circulating water back flushing device is characterized in that a circulating water check valve, a circulating water control valve and a circulating water back flushing pipe are arranged on the circulating water pipe, and a circulating water back flushing check valve and a circulating water back flushing control valve are arranged on the circulating water back flushing pipe.
6. The anaerobic membrane bioreactor as claimed in any one of claims 1 to 3, wherein the side wall of the housing is provided with a water outlet pipe and a uniform flow structure at a position close to the top wall.
7. The anaerobic membrane bioreactor of claim 1, wherein the exhaust gas collecting part further comprises a pressure detecting means for detecting the air pressure in the air bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110059126.6A CN112374607B (en) | 2021-01-18 | 2021-01-18 | Anaerobic membrane bioreactor for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110059126.6A CN112374607B (en) | 2021-01-18 | 2021-01-18 | Anaerobic membrane bioreactor for sewage treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112374607A CN112374607A (en) | 2021-02-19 |
| CN112374607B true CN112374607B (en) | 2021-03-26 |
Family
ID=74581942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110059126.6A Active CN112374607B (en) | 2021-01-18 | 2021-01-18 | Anaerobic membrane bioreactor for sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112374607B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4328296A1 (en) * | 2022-08-24 | 2024-02-28 | Mirai Foods AG | Method for operating a bioreactor for cultivated meat and corresponding bioreactor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3064158B2 (en) * | 1993-06-25 | 2000-07-12 | 松下電工株式会社 | Sewage treatment tank |
| JP2009136737A (en) * | 2007-12-05 | 2009-06-25 | Eco Work Co Ltd | Water treatment contact filter and water treatment apparatus |
| CN102153251B (en) * | 2011-05-11 | 2012-08-22 | 上海膜达克环保工程有限公司 | External anaerobic membrane bioreactor and waste water purification technology thereof |
| CN205294956U (en) * | 2015-11-26 | 2016-06-08 | 中国农业科学院农业环境与可持续发展研究所 | Anaerobic reactor and breed effluent disposal system |
| CN106115958B (en) * | 2016-07-22 | 2017-05-24 | 福建省联盛纸业有限责任公司 | Papermaking boiler feedwater treatment device and cation resin layer washing method |
| CN206604237U (en) * | 2017-01-23 | 2017-11-03 | 陕煤集团神木张家峁矿业有限公司 | A kind of water-purifying filter for being aerated backwash |
| CN209740808U (en) * | 2019-03-15 | 2019-12-06 | 重庆郅治环保科技有限公司 | Anaerobic biological filter sewage treatment system |
-
2021
- 2021-01-18 CN CN202110059126.6A patent/CN112374607B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112374607A (en) | 2021-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203017830U (en) | Continuous type sand filter | |
| CN112374607B (en) | Anaerobic membrane bioreactor for sewage treatment | |
| CN102755771A (en) | Multi-stage variable-porosity fiber filter bed and filtering equipment | |
| CN202933629U (en) | External pressure hollow fiber ultrafiltration membrane | |
| CN105016462A (en) | Biological aerated filter for automatically and continuously cleaning filter materials | |
| CN215530957U (en) | Integrated rice and fish symbiotic system | |
| CN206661772U (en) | A kind of swash plate purging system in inclined-plate clarifying basin | |
| CN1272085C (en) | Self clean sand filter for online scanning current | |
| CN214528237U (en) | A fluidization adsorption equipment for sewage treatment | |
| CN211521878U (en) | Combined high-efficiency reaction clarification filter | |
| CN111675422B (en) | Environment-friendly sewage purification tank | |
| CN113041691A (en) | Sludge press filtration water-saving flushing device | |
| CN201940109U (en) | Rotary disk filter tank | |
| CN112704947A (en) | Fermentation liquor filtering and purifying device for plant fermentation | |
| CN2712429Y (en) | On-line cross flow self-cleaning sand-bed filter | |
| CN113016577A (en) | Water-saving irrigation system and irrigation method | |
| CN220047272U (en) | Flowing water filter equipment is used in water pollution purification | |
| CN105565609A (en) | Fiber bundle biological reaction integrated sewage treatment equipment | |
| CN101422665B (en) | Filter head for upward flow filter pool | |
| CN212731312U (en) | Disk filter is used in tailing dehydration | |
| CN116443992B (en) | Ultrafiltration membrane equipment | |
| CN212504461U (en) | Environment-friendly sewage purification tank | |
| CN214116494U (en) | Water conservancy water and electricity construction is with drainage canal | |
| CN220597202U (en) | Water distribution backwashing structure of anoxic biological filter | |
| CN214991014U (en) | Polymer particle bioreactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100073 502, 5th floor, building 2, yard 9, Guang'an Road, Fengtai District, Beijing Patentee after: Beijing Branch of Huaxia Bishui Environmental Protection Technology Co.,Ltd. Address before: 100073 502, 5th floor, building 2, yard 9, Guang'an Road, Fengtai District, Beijing Patentee before: Beijing Branch of Huaxia Bishui Environmental Protection Technology Co.,Ltd. |