CN216062746U - Automatic off-line cleaning device for immersed MBR (membrane bioreactor) membrane - Google Patents

Abstract

The utility model discloses an immersed MBR (membrane bioreactor) membrane automatic off-line cleaning device, which belongs to the field of MBR membrane cleaning devices and comprises a device body, a membrane fixing assembly, an input pipeline and an output pipeline. The automatic off-line cleaning device comprises a body, an input pipeline, a spraying section and an output pipeline, wherein a cavity is formed in the body and used for forming a cleaning pool, the input pipeline is arranged on the body, the input pipeline is divided into the input section and the spraying section, the spraying section is used for spraying cleaning liquid to the cleaning pool, and the output pipeline is arranged on the body and used for communicating the cleaning pool with the outside. The utility model automatically completes multiple processes of physical cleaning, mud discharging, chemical soaking, multiple rinsing, cleaning solution discharging and the like of multiple medicaments, reduces the workload of off-line cleaning and improves the working efficiency.

Description

Automatic off-line cleaning device for immersed MBR (membrane bioreactor) membrane

Technical Field

The utility model relates to the field of MBR (membrane bioreactor) membrane cleaning devices, in particular to an immersed MBR membrane automatic off-line cleaning device.

Background

In recent years, the immersed MBR membrane process is widely applied in the water treatment industry, and when the MBR membrane filters suspended matters in water, a large amount of pollutants are easily accumulated on the membrane surface, so that the MBR membrane cleaning process becomes an essential process for normal operation of the MBR membrane system. MBR membrane cleaning is generally divided into two modes of "online cleaning" and "offline cleaning". The on-line cleaning is routine maintenance cleaning in daily units, and is generally performed by using sodium hypochlorite and water; the off-line cleaning is a restorative cleaning in a month unit, and is generally performed using sodium hypochlorite, citric acid, alkali, and water.

In engineering application, online cleaning is widely integrated in an automatic control mode of an MBR device system as a necessary procedure for normal operation of an MBR membrane system; however, offline cleaning is neglected under many conditions, only one cleaning container is arranged, even in some cases, in order to save investment cost, even if no cleaning container is arranged, which brings great inconvenience to the operation management work of the MBR system, and offline cleaning involves multiple processes of physical cleaning with multiple chemicals, sludge discharge, chemical soaking with multiple chemicals, multiple rinsing, cleaning solution discharge and the like, and uses a large amount of time, manpower and material resources.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the background art and designs an immersed MBR membrane automatic off-line cleaning device.

The technical scheme of the utility model is that the immersed MBR membrane automatic off-line cleaning device comprises: the device comprises a device body, a diaphragm fixing component, an input pipeline and an output pipeline;

the device body is provided with a cavity for forming a cleaning pool, the input pipeline is arranged on the device body and is divided into an input section and a spraying section;

the spraying section is used for spraying cleaning liquid to the cleaning pool;

the output pipeline is used for communicating the cleaning pool with the outside.

In some embodiments of the utility model, the diaphragm fixing assembly comprises:

a1, a first membrane fixing grid, wherein the first membrane fixing grid is arranged on a first surface of the cleaning pool;

a2, a second membrane fixing grid, wherein the second membrane fixing grid is arranged on a second surface of the cleaning pool;

a3, a membrane box support, wherein the membrane box support is arranged at the lower part of the cleaning pool.

In some embodiments of the utility model, the input lines comprise a first input line, a second input line, and a third input line;

and the input pipelines are arranged above the cleaning pool at equal intervals or unequal intervals.

In some embodiments of the utility model, the first input line comprises a first input section and a first sparging section; the first spraying section is used for spraying cleaning liquid to the cleaning pool; the first input end is used for inputting reclaimed water.

In some embodiments of the present invention, the input ends of the first input pipeline, the second input pipeline and the third input pipeline are respectively provided with a first input branch, a second input branch and a third input branch.

In some embodiments of the utility model, the output line comprises a first output line and a second output line;

the first output pipeline is used for discharging cleaning wastewater, and the second output pipeline is used for discharging cleaning slurry.

In some embodiments of the present invention, the submerged MBR membrane automatic off-line cleaning apparatus further comprises: a sewage pump;

the output pipeline also comprises a main output pipeline;

the first output pipeline and the second output pipeline are respectively connected with the main output pipeline;

the main output pipeline is connected with the sewage pump and then divided into a first output branch and a second output branch, the first output branch is externally connected with a processing pool, and the second output branch is externally connected with a second processing pool.

In some embodiments of the present invention, the submerged MBR membrane automatic off-line cleaning apparatus includes one or more of the following technical features:

b1, the cleaning pool is a cuboid cavity;

b2, further comprising a fixing mechanism, wherein the fixing mechanism is arranged on the device body, is positioned on the side wall of the cleaning pool and is used for fixing the spraying section;

b3, the device body comprises a device base and a plurality of side walls, the side walls enclose a cavity and form a cleaning pool, and reinforcing ribs are arranged on the outer sides of the side walls;

b4, coating an anticorrosive material outside the device body;

b5, coating an anticorrosive material outside the membrane fixing component;

b6, a plurality of spraying holes are arranged on one surface of the spraying section facing the cleaning pool.

In some embodiments of the utility model, the submerged MBR membrane automatic off-line cleaning apparatus, in B1:

including one or more of the following technical features:

c1, the grid gap of the first membrane fixed grid (21) is 5-20 mm;

c2, the grid gap of the second membrane fixed grid (22) is 20-50 mm;

c3, the first membrane fixing grid (21) is arranged in the length direction of the cleaning pool;

c4, the second membrane fixing grid (22) is arranged in the width direction of the cleaning pool;

c5, the membrane box bracket (23) is arranged at the lower part of the cleaning pool, and the distance from the membrane box bracket to the bottom of the cleaning pool is 10-50 cm.

In some embodiments of the utility model, the submerged MBR membrane automatic off-line cleaning apparatus, in B6:

including one or more of the following technical features:

d1, the plurality of spraying holes are uniformly or alternately arranged;

d2, the aperture of the spraying hole is 1-5 mm;

d3, the distance between the spraying holes is 10-50 mm.

In some embodiments of the present invention, the apparatus for automatically cleaning an immersed MBR membrane off-line further includes: the device comprises a controller, a liquid level detector and a pH detector;

a plurality of electromagnetic valves and maintenance valves are arranged on pipelines of the input pipeline and the output pipeline;

the controller is respectively and electrically connected with each electromagnetic valve, the liquid level detector and the pH detector.

Has the advantages that:

the utility model provides an immersed MBR (membrane biological reactor) membrane automatic off-line cleaning device, which can automatically complete a plurality of procedures of physical cleaning of a plurality of medicaments, sludge discharge, chemical soaking of the plurality of medicaments, multiple rinsing, cleaning fluid discharge and the like, reduce the workload of off-line cleaning and improve the working efficiency.

Drawings

FIG. 1 is a schematic structural diagram of an automatic off-line cleaning device for submerged MBR membranes according to the present invention;

FIG. 2 is a schematic diagram of a top view of the submerged MBR membrane automatic off-line cleaning device according to the present invention;

FIG. 3 is a schematic side view of the submerged MBR membrane automatic off-line cleaning device.

Reference numbers in the figures:

1. a device body;

11. reinforcing ribs;

21. a first diaphragm fixed grid; 22. a second diaphragm fixed grid; 23. a membrane cassette holder;

31. a first input line;

311. a first input branch; 312. a first spraying section;

32. a second input line;

321. a second input branch;

33. a third input line;

331. a third input branch;

41. a first output line; 42. a second output line; 43. a main output line;

5. a sewage pump;

51. a first output branch; 52. a second output branch;

6. a fixing mechanism;

7. a liquid level detector;

8. a pH detector;

9. and a controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper/lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed/sleeved," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model can be applied to the existing waste water station which is provided with a reclaimed water conveying system (the water pressure is 1-2bar, and the waste water station without the reclaimed water system can be replaced by tap water); a storage tank (stirring tank) and a dosing pump for sodium hypochlorite, citric acid, liquid caustic soda and other medicaments; compressing air; a small movable steel step; a sludge tank and a sludge treatment device; wastewater treatment systems, and the like.

The conventional immersed MBR membrane module in the market at present comprises a curtain type hollow fiber membrane module and a flat plate membrane module, wherein the hollow fiber membrane module can be subdivided into a plurality of forms such as a two-end fixed type, a bottom fixed type and a drawer type, the utility model can simultaneously clean three types of common membrane modules, and the types and specification sizes of the membrane modules are as shown in Table 1:

TABLE 1

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Referring to fig. 1-3, an apparatus for automatically cleaning an immersed MBR membrane off-line includes: the device comprises a device body 1, a diaphragm fixing component, an input pipeline and an output pipeline. Wherein, device body 1 establishes the cavity and is used for forming the washing pond, and input pipeline locates device body 1, and input pipeline divide into the input section and spray the section, sprays the section and is used for spraying the washing liquid to wasing the pond. The output pipeline is used for communicating the cleaning pool 1 with the outside.

In a specific embodiment, the device body 1 is made of carbon steel and comprises a device base and a plurality of side walls, the side walls enclose a cuboid cavity and form a cleaning pool, reinforcing ribs 11 are arranged on the outer sides of the side walls, and the device body 1 is coated with an anticorrosive material, preferably epoxy asphalt for corrosion prevention.

In a specific embodiment, the specification and the model of the device body 1 are 2196 multiplied by 1336 multiplied by 1780mm (h), the device body 1 is provided with a cleaning pool, and a membrane fixing component is arranged in the cleaning pool and is used for containing cleaning agents and rinsing water.

In a preferred embodiment, the membrane fixing assembly comprises a first membrane fixing grid 21, a second membrane fixing grid 22 and a membrane box support 23, which are all made of carbon steel and coated with epoxy asphalt for corrosion prevention, wherein the first membrane fixing grid 21 and the second membrane fixing grid 22 are respectively arranged on the inner side wall of the cleaning pool, the grid gap of the first membrane fixing grid 21 is 5-20mm, the grid gap of the second membrane fixing grid 22 is 20-50mm, and the membrane box support 23 is arranged at the lower part of the cleaning pool.

In a specific embodiment, the first membrane fixing grid 21 is arranged in the length direction of the cleaning pool, the second membrane fixing grid 22 is arranged in the width direction of the cleaning pool, and the membrane box support 23 is arranged at the lower part of the cleaning pool and is 10-50cm away from the bottom of the cleaning pool.

In a specific embodiment, 200 first membrane fixing grids are arranged in the length direction of the cleaning pool, and the grid gap of each first membrane fixing grid is 10mm and is used for bearing a PEIER-100 flat membrane element; 72 second membrane fixing fences 22 were provided in the width direction of the cleaning tank, each having a gap of 35mm, for carrying 60E0040SA curtain film elements. 48 groups of membrane box supports are arranged 20cm away from the bottom of the cleaning pool and are used for bearing ECONITY drawer type membrane boxes.

In a preferred embodiment, the input lines comprise a first input line 31, a second input line 32 and a third input line 33, and the input lines are arranged above the cleaning pool at equal intervals or at unequal intervals, and are used for inputting the same or different cleaning agents or tap water or reclaimed water.

In a preferred embodiment, the first input line 31 comprises a first input section and a first spraying section 312, the first spraying section 312 being used for spraying washing liquid to the washing basin, the first input section being used for inputting reclaimed water;

similarly, the second input pipeline comprises a second input section and a second spraying section, the second spraying section is used for spraying cleaning liquid to the cleaning pool, and the second input section is used for inputting reclaimed water;

the third input pipeline comprises a third input section and a third spraying section, the third spraying section is used for spraying cleaning liquid to the cleaning pool, and the third input section is used for inputting reclaimed water.

In a specific embodiment, a fixing mechanism, preferably a detachable buckle, is further provided on the device body and located on the side wall of the cleaning pool for fixing the spraying section. During the in-service use, open the buckle, will be located the section of spraying that washs the pond top and mention, put into the washing pond with the diaphragm.

In a preferred embodiment, the side of the spray section facing the washing basin is provided with spray means or with a plurality of spray openings.

In a specific embodiment, the plurality of spraying holes are uniformly or alternatively arranged, the aperture of each spraying hole is 1-5mm, and the distance between every two spraying holes is 10-50 mm.

In a specific embodiment, the spraying holes are staggered at an included angle of 30 degrees, the hole diameter is 2mm, and the hole distance is 30 mm.

In a specific embodiment, the first input section, the second input section and the third input section are respectively provided with solenoid valves for controlling the input of the reclaimed water washing water.

In a preferred embodiment, the input ends of the first, second and third inlet lines 31, 32, 33 are provided with a first, second and third inlet branch 311, 321, 331, respectively, each for delivering the same or a different cleaning agent to each.

In a specific embodiment, the first input branch 311 is used for inputting sodium hypochlorite to the first input pipeline 31, the second input branch 321 is used for inputting caustic soda liquid to the second input pipeline 32, and the third input branch 331 is used for inputting citric acid to the third input pipeline 33.

In a specific embodiment, the first input branch 311, the second input branch 321 and the third input branch 331 are respectively provided with solenoid valves for controlling the input of the respective cleaning agents.

In a specific embodiment, the first input section, the second input section and the third input section, the first input branch 311, the second input branch 321 and the third input branch 331 are respectively provided with a manual ball valve for the overhauling use of the pipeline.

In a preferred embodiment, the outlet lines comprise a first outlet line 41 and a second outlet line 42, the first outlet line 41 being used for discharging the washing waste water and the second outlet line 42 being used for discharging the washing sludge.

In a specific embodiment, the first output pipeline 41 and the second output pipeline 42 are respectively provided with a manual butterfly valve for the maintenance of each pipeline.

In a preferred embodiment, the output pipeline further comprises a main output pipeline 43, the first output pipeline 41 and the second output pipeline 42 are respectively connected with the main output pipeline 43 and flow into the sewage pump 5 after being connected, and flow out of the sewage pump 5 and are divided into a first output branch 51 and a second output branch 52, the first output branch 51 is externally connected with a processing pool, and the second output branch 52 is externally connected with a second processing pool. Specifically, the first output branch 51 outputs the cleaned water and chemical agent to the outside and discharges the water and chemical agent into a waste water receiving tank, and the second output branch 52 outputs the waste sludge receiving tank to the outside; and the first output branch 51 and the second output branch 52 are respectively provided with an electric valve for controlling the output of the waste water or the waste mud.

In a specific embodiment, the dredge pump 5 is an air operated diaphragm pump with process parameters of 10m³0.6MPa, and is provided with an air hose, one end of the air hose is connected with a galvanized steel pipe, the other end of the air hose is connected with an air source and a pneumatic diaphragm pump, the galvanized steel pipe is externally connected with the air source, and the galvanized steel pipe is provided with a manual ball valve.

In a preferred embodiment, the submerged MBR membrane automatic off-line cleaning apparatus further comprises: a controller, a liquid level detector 7 and a pH detector 8;

the controller is respectively electrically connected with each electromagnetic valve, the liquid level detector 7 and the pH detector 8.

In a specific embodiment, a liquid level detector is disposed in the cleaning tank for monitoring the liquid level, and the pH detector is disposed in the cleaning tank for monitoring the pH of the cleaning agent in the tank.

In a specific embodiment, the electric control box is further included and comprises a controller, an indicator light, a control switch and the like. The controller includes touch-sensitive screen, PLC module and electrical control original paper etc..

The operation process of the utility model is as follows: (taking a flat membrane as an example)

S1, disassembling the flat membrane assembly and taking out the membrane; manually loosening the top of the device (namely a buckle on the side wall of the cleaning pool), lifting the spraying sections of the input pipelines, enabling the flat membrane to be parallel to the width direction of the device, inserting the flat membrane between the first membrane fixing grids, inserting 50 flat membranes in a single layer, and vertically stacking double layers and inserting 100 flat membranes;

s2, manually resetting the spraying section, fixing the buckle, and aligning the spraying hole of the spraying section downwards to the membrane;

s3, checking conditions such as a reclaimed water system, a dosing system, a sludge tank caching capacity and a wastewater receiving tank caching capacity which are matched and used on site, checking and ensuring that all manual valves of the device are in an open state, pressing a 'one-key cleaning' button on a touch screen of an electric cabinet after checking is correct, and starting automatic operation of the device, wherein the following sequence numbers (1) to (5) are detailed;

(1) the electromagnetic valves on the first input pipeline, the second input pipeline and the third input pipeline are automatically opened, the reclaimed water washes residual mud attached to the surface of the MBR membrane through the washing pipeline under the action of pressure, and the washing duration is adjustable within 5-15 minutes.

In the flushing process, an electric valve on the first output branch is in a closed state, an electric valve on the second output branch is in an open state, a liquid level detector monitors the liquid level in the cleaning pool, the liquid level detector and a controller control the start and stop of a pneumatic diaphragm pump, and muddy water at the bottom of the device is transferred into an existing sludge tank of a wastewater station for subsequent treatment; when the flushing time reaches a set time point, the electromagnetic valves on the first input pipeline, the second input pipeline and the third input pipeline are automatically closed, no reclaimed water is injected into the device at the moment, and after the pneumatic diaphragm pump exhausts the slurry in the device, the liquid level is monitored by the liquid level detector, and the pneumatic diaphragm pump and the controller are closed, and the electric valve on the second input pipeline is closed. At this point, the physical flushing process of the MBR membrane in the first step is finished, and the device body is in an empty groove state.

(2) After the physical flushing of the MBR membrane is finished, the slurry at the bottom of the device is basically discharged, a second-step chemical soaking procedure is triggered by a liquid level detector and a controller, electric valves on a first output branch and a second output branch are closed, a pneumatic diaphragm pump is closed, electromagnetic valves on a first input pipeline, a second input pipeline and a third input pipeline are opened again, reclaimed water begins to be injected into the device body, when the liquid level in the device reaches the depth of 1.3 meters, the liquid level detector sends out signals, the electromagnetic valves on the first input pipeline, the second input pipeline and the third input pipeline are closed, after 10 seconds of delay, the electromagnetic valve on the first input branch is opened, a sodium hypochlorite dosing pump is opened on site, 125 liters (10%) of sodium hypochlorite solution is added into the device for about 15 minutes, and after the addition is finished, the electromagnetic valve on the first input branch and the sodium hypochlorite dosing pump are closed; then the electromagnetic valve on the second input branch and the on-site liquid caustic soda dosing pump are opened, meanwhile, the electromagnetic valves on the first input pipeline and the third input pipeline are opened again, reclaimed water is injected into the main body device to play a certain stirring role, and when the pH value continuously rises to 12, the pH detector sends a signal to close the electromagnetic valve on the second input branch and the liquid caustic soda dosing pump; when the liquid level in the device reaches the depth of 1.5 meters, the liquid level detector controls the electromagnetic valves on the first input pipeline and the third input pipeline to be closed, water injection is stopped, all the electric control devices are in a closed state at the moment, a soaking procedure is carried out, the soaking time is adjustable within 2-5 hours, and after soaking is finished, the sodium hypochlorite and caustic soda liquid soaking process of the second step is finished.

(3) After the soaking process is finished, automatically opening an electric valve on the first output branch, delaying for 10 seconds, and starting a pneumatic diaphragm pump to discharge the chemical agent in the device main body into a wastewater receiving pool; when the liquid level in the device main body is reduced to the bottom, the liquid level detector sends a signal to close the pneumatic diaphragm pump and the electric valve on the first output branch; after delaying for 10 seconds, opening the electromagnetic valves on the first input pipeline, the second input pipeline and the third input pipeline again, injecting reclaimed water into the device main body, controlling the electromagnetic valves on the first input pipeline, the second input pipeline and the third input pipeline to be closed by the liquid level detector when the liquid level in the device reaches the depth of 1.5 meters, automatically opening the electric valve on the first output pipeline after delaying for 5 minutes, and then opening the pneumatic diaphragm pump and discharging the wastewater in the device main body into the wastewater receiving pool after delaying for 10 seconds; repeating the process for 3-4 times, and reducing the pH value of the reclaimed water in the device main body from about 12 to about 7, and finishing the rinsing process in the third step.

(4) After the clear water washing process is finished, the liquid level detector triggers a fourth step of citric acid chemical soaking process, at the moment, electric valves on the first output branch and the second output branch are closed, the pneumatic diaphragm pump is closed, electromagnetic valves on the first input pipeline, the second input pipeline and the third input pipeline are opened again, reclaimed water starts to be injected into the device body, when the liquid level in the device reaches the depth of 1.3 meters, the liquid level detector sends a signal, the electromagnetic valves on the third input pipeline are closed (at the moment, the electromagnetic valves on the first input pipeline and the second input pipeline are still in an open state), after 10 seconds of delay, the electromagnetic valve on the third input branch and the field citric acid dosing pump are opened, when the pH value continuously drops to 4, the pH detector sends a signal, and the citric acid dosing pump is closed; when the liquid level in the device reaches 1.5 m, the liquid level detector sends out a signal, the electromagnetic valves on the first input pipeline and the second input pipeline are closed, all the electric control devices are in a closed state at the moment, a soaking procedure is started, the soaking time is adjustable within 2-4 hours, and after the soaking is finished, the citric acid soaking procedure is finished in the fourth step.

(5) After the citric acid soaking process is finished, automatically opening an electric valve on the first output branch, delaying for 10 seconds, starting a pneumatic diaphragm pump, and discharging chemical agents in the device main body into a wastewater receiving pool; when the liquid level in the device main body is reduced to the bottom, the liquid level detector sends a signal to close the pneumatic diaphragm pump and the electric valve on the first output branch; after delaying for 10 seconds, opening the electromagnetic valves on the first input pipeline, the second input pipeline and the third input pipeline again, injecting reclaimed water into the device main body, controlling the electromagnetic valves on the first input pipeline, the second input pipeline and the third input pipeline to be closed by the liquid level detector when the liquid level in the device reaches the depth of 1.5 meters, automatically opening the electric valve on the first output branch after delaying for 5 minutes, and starting the pneumatic diaphragm pump and discharging the wastewater in the device main body into the wastewater receiving pool after delaying for 10 seconds; repeating the process for 3-4 times, wherein the pH value of the reclaimed water in the device main body is increased from about 4 to about 7, and the fifth step of the rinsing process with clean water is finished.

S4, manually loosening a buckle at the top of the device for fixing the spraying section, taking out the cleaned flat membrane, reassembling the flat membrane into a membrane assembly, and restoring the reclaimed water washing pipe to the original position to finish the whole chemical cleaning process.

In addition, when the MBR curtain type membrane is cleaned, the MBR membrane curtain is inserted into the fixed grid in parallel to the length direction of the device body, other cleaning processes are consistent, and local data can be finely adjusted on the touch screen before one-key cleaning, so that a better cleaning effect is achieved.

When MBR drawer membrane washs, directly stack the membrane case in the device main part, other wash the flow unanimously, can rinse "a key before, finely tune local data on the touch-sensitive screen to reach better cleaning performance.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. An automatic off-line cleaning device of submergence formula MBR membrane, its characterized in that includes: the device comprises a device body (1), a diaphragm fixing component, an input pipeline and an output pipeline;

the device body (1) is provided with a cavity for forming a cleaning pool, the input pipeline is arranged on the device body (1) and is divided into an input section and a spraying section;

the spraying section is used for spraying cleaning liquid to the cleaning pool;

the output pipeline is used for communicating the cleaning pool with the outside.

2. The submerged MBR membrane automatic off-line cleaning device according to claim 1, wherein the membrane fixing assembly comprises:

a1, a first membrane fixing grid (21), wherein the first membrane fixing grid (21) is arranged on a first surface of the cleaning pool;

a2, a second membrane fixing grid (22), wherein the second membrane fixing grid (22) is arranged on the second surface of the cleaning pool;

a3, a membrane box bracket (23), wherein the membrane box bracket (23) is arranged at the lower part of the cleaning pool.

3. The submerged MBR membrane automatic off-line cleaning device according to claim 1, wherein the input lines comprise a first input line (31), a second input line (32), and a third input line (33);

and the input pipelines are arranged above the cleaning pool at equal intervals or unequal intervals.

4. The automatic offline MBR membrane cleaning device according to claim 3, wherein the input ends of the first input pipeline (31), the second input pipeline (32) and the third input pipeline (33) are respectively provided with a first input branch (311), a second input branch (321) and a third input branch (331).

5. The submerged MBR membrane automatic off-line cleaning device according to claim 1, wherein the outlet line comprises a first outlet line (41) and a second outlet line (42);

the first output pipeline (41) is used for discharging cleaning wastewater, and the second output pipeline (42) is used for discharging cleaning slurry.

6. The submerged MBR membrane automatic off-line cleaning device of claim 5, further comprising: a sewage pump (5);

the output line further comprises a main output line (43);

the first output pipeline (41) and the second output pipeline (42) are respectively connected with the main output pipeline (43);

the main output pipeline (43) is connected with the sewage pump (5) and then is divided into a first output branch (51) and a second output branch (52), the first output branch (51) is externally connected with a processing pool, and the second output branch (52) is externally connected with a second processing pool.

7. The submerged MBR membrane automatic off-line cleaning device according to claim 2, and comprising one or more of the following technical features:

b1, the cleaning pool is a cuboid cavity;

b2, further comprising a fixing mechanism (6), wherein the fixing mechanism is arranged on the device body (1), is positioned on the side wall of the cleaning pool and is used for fixing the spraying section;

b3, the device body (1) comprises a device base and a plurality of side walls, the side walls enclose a chamber and form a cleaning pool, and reinforcing ribs (11) are arranged on the outer sides of the side walls;

b4, coating an anticorrosive material outside the device body (1);

b5, coating an anticorrosive material outside the membrane fixing component;

b6, a plurality of spraying holes are arranged on one surface of the spraying section facing the cleaning pool.

8. The automatic off-line cleaning device for the submerged MBR membrane according to claim 7, wherein the B1 comprises one or more of the following technical characteristics:

c1, the grid gap of the first membrane fixed grid (21) is 5-20 mm;

c2, the grid gap of the second membrane fixed grid (22) is 20-50 mm;

c3, the first membrane fixing grid (21) is arranged in the length direction of the cleaning pool;

c4, the second membrane fixing grid (22) is arranged in the width direction of the cleaning pool;

c5, the membrane box bracket (23) is arranged at the lower part of the cleaning pool, and the distance from the membrane box bracket to the bottom of the cleaning pool is 10-50 cm.

9. The automatic off-line cleaning device for the submerged MBR membrane according to claim 7, wherein the B6 comprises one or more of the following technical characteristics:

d1, the plurality of spraying holes are uniformly or alternately arranged;

d2, the aperture of the spraying hole is 1-5 mm;

d3, the distance between the spraying holes is 10-50 mm.

10. The submerged MBR membrane automatic off-line cleaning device according to any one of claims 1-9, further comprising: the device comprises a controller, a liquid level detector and a pH detector;

a plurality of electromagnetic valves and maintenance valves are arranged on pipelines of the input pipeline and the output pipeline;

the controller is respectively and electrically connected with the electromagnetic valves, the liquid level detector (7) and the pH detector (8).

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