CN114656110A

CN114656110A - Waste water treatment equipment of membrane bioreactor

Info

Publication number: CN114656110A
Application number: CN202210383596.2A
Authority: CN
Inventors: 徐静; 陆钰; 武杰; 沙宇翔; 刘勇
Original assignee: Anhui Yulong New Energy Technology Group Co ltd; Bengbu College
Current assignee: Anhui Yulong New Energy Technology Group Co ltd; Bengbu College
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-06-24

Abstract

The invention provides a membrane bioreactor wastewater treatment device, which comprises a treatment box, wherein an aeration pipe can be driven by a power device to rotate; a membrane module is arranged above the aeration pipe in a non-contact manner, MBR membranes are fixedly arranged on two sides of the supporting rod, and a lifting pipe is communicated with the side wall of the treatment box; the bottom of the interface tube is communicated with and provided with a first washing cover, the first washing cover is used for washing an MBR membrane, the washing tube is communicated with and provided with a second washing cover, the second washing cover is used for washing an aeration hole and an anti-blocking net in the aeration hole, an elastic sealing section is arranged at the opening of the washing tube, and a power pump switch is arranged in the elastic sealing section in a wrapping mode and is in signal connection with the power pump. The invention provides a membrane bioreactor wastewater treatment device, which is internally provided with a reflux flushing device, can flush aeration holes of an aeration pipe and an MBR membrane of a membrane component respectively, and has better use effect.

Description

Waste water treatment equipment of membrane bioreactor

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment device of a membrane bioreactor.

Background

The Membrane Bioreactor (MBR) process is a novel wastewater treatment technology organically combining a membrane separation technology and a biotechnology. It utilizes membrane separation equipment to retain active sludge and macromolecular organic substances in the biochemical reaction tank, and saves secondary sedimentation tank. The activated sludge concentration is greatly improved, the Hydraulic Retention Time (HRT) and the Sludge Retention Time (SRT) can be respectively controlled, and substances which are difficult to degrade continuously react and degrade in the reactor. Thus, Membrane Bioreactor (MBR) processes greatly enhance the bioreactor function through membrane separation techniques. Compared with the traditional biological treatment method, the method is one of the most promising new wastewater treatment technologies at present.

In the prior art, a dioxygen layer biofilm reactor for wastewater treatment with publication number "CN 109734198B", a water inlet at the lower part of a container body is connected with a water inlet pump through a pipeline, a continuous water outlet is arranged at the upper part of the container body, a stirring device is arranged at the center of the bottom of the cavity of the container body, a hollow fiber membrane component serving as a biofilm carrier is arranged in the cavity of the container body, the lower end of the hollow fiber membrane component is connected with a gas inlet pipe, the upstream end of the gas inlet pipe is sequentially connected with a gas pressure gauge, a gas flow meter and an electric air pump, and the upper end of the hollow fiber membrane component is connected with a microporous aeration device arranged in the cavity of the container body through a backflow gas pipe, so that a gas circulation system is formed; the upper part of the container body is provided with a water circulation outlet, the lower part of the container body is provided with a water circulation inlet, the water circulation outlet is connected with the water circulation inlet through a backflow water pipe, and a circulating water pump is arranged on the backflow water pipe, so that a water circulation system is formed. It is favorable for the full-aerobic denitrifying bacteria to form a double-oxygen layer biological film in the reactor and provides a stable aerobic environment for the double-oxygen layer biological film. The ammonia nitrogen removal rate of the high ammonia nitrogen wastewater reaches 80-90%.

However, the method still has the obvious defects in the using process: 1. the device is provided with the micropore aeration device, but after long-term use, the aeration holes are very easy to be blocked by impurities in the wastewater, so that the aeration device fails; 2. the device is provided with the hollow fiber membrane module, and similarly, after the device is used for a long time, the hollow fiber membrane module can reduce the effect of sewage treatment because of being attached by impurities, and at the moment, the device also needs to be manually cleaned, so that the device is very complicated and low in efficiency.

Disclosure of Invention

The present invention is directed to a membrane bioreactor wastewater treatment apparatus to solve the above problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a membrane bioreactor wastewater treatment device comprises a treatment box, wherein a water inlet pipe is communicated and arranged on the side wall of the lower end of the treatment box, a thick grating, a thin grating and a partition plate are fixedly arranged in an inner cavity of the treatment box from bottom to top in sequence, the thick grating is provided with a thick through hole, the thin grating is provided with a thin through hole, an aeration pipe is arranged above the partition plate, the aeration pipe is provided with a plurality of aeration holes, an anti-blocking net is arranged in each aeration hole, and the aeration pipe can be driven by a power device to rotate;

a membrane module is arranged above the aeration pipe in a non-contact manner, a plurality of support rods are fixedly arranged on the membrane module, MBR membranes are fixedly arranged on two sides of each support rod, a lift pipe is communicated and arranged on the side wall of the treatment box, a lift pump is arranged on the lift pipe, one end of the lift pipe is communicated with the inner cavity of the treatment box between the fine grid and the aeration pipe, the other end of the lift pipe is communicated and arranged with a confluence plate, a plurality of water outlet pipes are communicated and arranged on the confluence plate and face the membrane module, a baffle is arranged above the membrane module in a non-contact manner, and a drain pipe is communicated and arranged on the side wall of the upper end of the treatment box;

the bottom of the drain pipe is communicated with the liquid storage plate through a return pipe, the return pipe is provided with a return valve, the liquid storage plate is communicated with a flushing pipe through a communicating pipe, the flushing pipe is communicated with a connector pipe, the connector pipe is provided with a power pump, the bottom of the connector pipe is communicated with a first flushing cover, the first flushing cover is used for flushing an MBR membrane, the flushing pipe is communicated with a second flushing cover, the second flushing cover is used for flushing an aeration hole and an anti-blocking net in the aeration hole, an elastic sealing section is arranged at an opening of the flushing pipe, a power pump switch is arranged in the elastic sealing section in a wrapping mode, the power pump switch is in signal connection with the power pump, the bottom of the support rod is fixedly provided with a sliding plate, the sliding plate is movably arranged in a fixed frame, the bottom of the sliding plate is fixedly provided with a closure rod, and the closure rod can press down the elastic sealing section, and a compression spring is connected between the sliding plate and the bottom of the fixed frame.

Preferably, the bottom of the treatment box is communicated with a sewage discharge funnel, a sewage discharge pipe is fixedly arranged below the sewage discharge funnel, and a sewage discharge valve is arranged on the sewage discharge pipe.

Preferably, the power device comprises a rotating motor, a rotating shaft is fixedly arranged on an output shaft of the rotating motor, one end of the rotating shaft, which is far away from the rotating motor, is fixed on the air pump, and the air pump is communicated with the aeration pipe through an air conveying rod.

Preferably, the rotating motor is fixedly arranged on a support plate, and the support plate is fixedly arranged on the outer wall of the treatment box.

Preferably, the inner wall of the treatment box is embedded with a bearing, and the air conveying rod is arranged in the bearing.

Preferably, be provided with the disinfection filter screen in the inner chamber of handling the case, just the disinfection filter screen sets up between baffle and drain pipe.

Preferably, a sealing plate is arranged in an inner cavity of the treatment box, and the interface tube, the power pump and the upper section of the first flushing cover are arranged in the sealing plate.

Preferably, a stop block is fixedly arranged on the inner wall of the opening end of the fixing frame.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the backflow flushing device is arranged, and the built-in first flushing cover can flush the MBR membrane, so that the effect of impurities in wastewater on wastewater treatment is prevented from being influenced after the impurities in the wastewater are attached to the MBR membrane, self-cleaning can be realized, and the utilization rate of the MBR membrane is higher;

2. the aeration device is internally provided with the second washing cover, the second washing cover can wash the aeration holes and the anti-blocking net therein, so that the aeration holes are prevented from being blocked, the aeration device can be kept in a good use state for a long time, the dissolved oxygen in water is effectively improved, and the wastewater treatment effect is better;

3. the first washing cover and the second washing cover can spray back washing water, and the first washing cover and the second washing cover are mutually related, namely, in a normal use state, the washing water is sprayed out of the second washing cover to realize real-time cleaning of aeration holes, but along with the increase of time duration, when more impurities are gradually attached to an MBR membrane, the MBR membrane can be gradually pressed downwards due to the increase of the weight of the MBR membrane, so that the washing liquid flowing to the second washing cover is intercepted, at the moment, the first washing cover sprays the washing water to wash the MBR membrane with higher power and more water flows, the switching is automatically realized, and the configuration is more reasonable.

The invention provides a membrane bioreactor wastewater treatment device, which is internally provided with a backflow flushing device, can flush aeration holes of an aeration pipe and an MBR membrane of a membrane component respectively, and the two are mutually related, so that automatic flushing switching can be realized, and the using effect is better.

Drawings

FIG. 1 is a schematic front sectional view of the overall structure of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the invention at B in FIG. 1;

FIG. 4 is a side sectional schematic view of the flush tube of the present invention.

In the figure: the device comprises a treatment box 1, a water inlet pipe 2, a sewage discharge funnel 3, a sewage discharge pipe 4, a sewage discharge valve 5, a thick grid 6, a thick through hole 601, a thin grid 7, a thin through hole 701, a partition plate 8, an aeration pipe 9, an aeration hole 901, a rotating motor 10, a support plate 11, a rotating shaft 12, an air pump 13, an air conveying rod 14, a bearing 15, a membrane module 16, a support rod 17, an MBR membrane 18, a riser pipe 19, a lift pump 20, a collecting plate 21, a water outlet pipe 22, a baffle plate 23, a disinfection filter screen 24, a drain pipe 25, a return pipe 26, a liquid storage plate 27, a return valve 28, a communicating pipe 29, a flushing pipe 30, a mouthpiece pipe 31, a power pump 32, a first flushing cover 33, a sealing plate 34, a second flushing cover 35, an elastic sealing section 36, a power pump switch 37, a sliding plate 38, a fixing frame 39, a blocking block 40, a interception rod 41 and a compression spring 42.

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.

Referring to fig. 1 to 4, the present invention provides a technical solution:

the first embodiment is as follows:

a membrane bioreactor wastewater treatment device comprises a treatment box 1, wherein the side wall of the lower end of the treatment box 1 is communicated with a water inlet pipe 2, in the embodiment, the water inlet pipes 2 are symmetrically arranged, so that a user can conveniently introduce wastewater from different directions, a coarse grating 6, a fine grating 7 and a partition plate 8 are fixedly arranged in the inner cavity of the treatment box 1 from bottom to top in sequence, a coarse through hole 601 is formed in the coarse grating 6, a fine through hole 701 is formed in the fine grating 7, the diameter of the coarse through hole 601 is larger than that of the fine through hole 701, so that primary filtration can be realized after the wastewater sequentially passes through the coarse grating 6 and the fine grating 7, large impurities in the wastewater are intercepted, the partition plate 8 is in a full-sealed type, the inner cavity of the treatment box 1 can be divided into two parts, an aeration pipe 9 is arranged above the partition plate 8, a plurality of aeration holes 901 are formed in the aeration pipe 9, and an anti-blocking net is arranged in the aeration holes 901, aeration pipe 9 can be driven by power device and then take place the rotation, can constantly spout gas in aeration hole 901, both can improve the dissolved oxygen concentration of aquatic, and then improve reaction rate, can clean MBR membrane 18 through the mode that attaches to the bubble on MBR membrane 18 and take place the bubble burst again.

A membrane module 16 is arranged above the aeration pipe 9 in a non-contact manner, a plurality of support rods 17 are fixedly arranged on the membrane module 16, MBR membranes 18 are fixedly arranged on two sides of each support rod 17 and used for treating wastewater, a lift pipe 19 is arranged on the side wall of the treatment box 1 in a communicating manner, a lift pump 20 is arranged on the lift pipe 19, one end of the lift pipe 19 is communicated with the inner cavity of the treatment box 1 between the fine grid 7 and the aeration pipe 9 and used for leading in the wastewater after primary filtration, a confluence plate 21 is arranged at the other end of the lift pipe 19 in a communicating manner, a plurality of water outlet pipes 22 are arranged on the confluence plate 21 in a communicating manner, the water outlet pipes 22 are arranged towards the membrane module 16, so that the wastewater after primary filtration is reacted with the MBR membranes 18 on the membrane module 16, a baffle plate 23 is arranged above the membrane module 16 in a non-contact manner, the baffle plate 23 is arranged in a semi-closed manner, and the position of the membrane module 16 is arranged in a staggered manner, and the path of the wastewater outflow of the wastewater can be prolonged, so that the wastewater can be further precipitated, a drain pipe 25 is communicated with the side wall of the upper end of the treatment tank 1, and the treated wastewater finally flows out of the drain pipe 25.

The bottom of the drain pipe 25 is communicated with the liquid storage plate 27 through the return pipe 26, the return pipe 26 is provided with a return valve 28, whether the drain pipe 25 is communicated with the return pipe 26 can be controlled through opening and closing of the return valve 28, the liquid storage plate 27 is communicated with the flushing pipe 30 through a communication pipe 29, the flushing pipe 30 is communicated with a mouthpiece 31, the mouthpiece 31 is provided with a power pump 32, after the power pump 32 is opened, water flow in the mouthpiece 31 can be sprayed out at a higher speed, the bottom of the mouthpiece 31 is communicated with a first flushing cover 33, the first flushing cover 33 is used for flushing the MBR membrane 18, the defect that the treatment efficiency is reduced due to the fact that impurities in waste water are attached to the MBR membrane 18 is overcome, the flushing pipe 30 is communicated with a second flushing cover 35, and the second flushing cover 35 is used for flushing the anti-blocking aeration holes 901 and the anti-blocking net therein, so as to avoid the blocking of the aeration holes 901, so that the device can be kept in a good working state for a long time, an elastic sealing section 36 is arranged at the opening of the flushing pipe 30, a power pump switch 37 is arranged in the elastic sealing section 36 in a wrapping mode, and the power pump switch 37 is in signal connection with the power pump 32, so that when the power pump switch 37 is pressed and triggered, the power pump 32 is started, a sliding plate 38 is fixedly arranged at the bottom of the supporting rod 17, the sliding plate 38 is movably arranged in a fixed frame 39, the shape and the size of the sliding plate 38 are completely the same as those of the inside of the fixed frame 39, therefore, the sliding plate 38 can lift along the inner wall of the fixed frame 39, a cut-off rod 41 is fixedly arranged at the bottom of the sliding plate 38, the cut-off rod 41 can press the elastic sealing section 36, so that the section of the flushing pipe 30 is blocked, the water amount sprayed from the second flushing cover 35 is reduced, and a compression spring 42 is arranged between the sliding plate 38 and the bottom of the fixed frame 39, the compression spring 42 has good elasticity, when more impurities are attached to the MBR membrane 18, the compression spring 42 is pressed down due to the increased weight, and when the MBR membrane 18 is washed, the weight is reduced, and the sliding plate 38 at the moment is jacked upwards by the compression spring 42 and then returns to the initial position.

The second embodiment:

a membrane bioreactor wastewater treatment device comprises a treatment box 1, a water inlet pipe 2 is communicated and arranged on the side wall of the lower end of the treatment box 1, a sewage funnel 3 is communicated and arranged at the bottom of the treatment box 1, a sewage pipe 4 is fixedly arranged below the sewage funnel 3, a sewage valve 5 is arranged on the sewage pipe 4, whether the sewage pipe 4 is opened or not can be controlled by opening and closing the sewage valve 5, after the membrane bioreactor wastewater treatment device is used for a period of time, as large-scale dirt in the wastewater can be intercepted and deposited in the sewage funnel 3, the sewage valve 5 can be opened at regular time and the dirt can be discharged through the sewage pipe 4, a thick grating 6, a thin grating 7 and a baffle plate 8 are fixedly arranged in an inner cavity of the treatment box 1 from bottom to top in sequence, a thick through hole 601 is arranged on the thick grating 6, a thin through hole 701 is arranged on the thin grating 7, the diameter of the thick through hole 601 is larger than that of the thin through hole 701, therefore, after the wastewater sequentially passes through the thick grating 6 and the thin grating 7, can realize the prefilter, and then intercept large-scale impurity wherein, the top of baffle 8 is provided with aeration pipe 9, a plurality of aeration holes 901 have been seted up on aeration pipe 9, and be provided with in the aeration hole 901 and prevent stifled net, aeration pipe 9 can be driven and then take place rotatoryly by power device, the bubble scope after the rotation is wider, excellent in use effect, dissolved oxygen concentration in the aquatic both can be improved, and then improve reaction rate, can be through attaching to the bubble on MBR membrane 18 and the mode that the bubble explodes and splits, it is clean to MBR membrane 18.

A membrane module 16 is arranged above the aeration pipe 9 in a non-contact manner, a plurality of support rods 17 are fixedly arranged on the membrane module 16, MBR membranes 18 are fixedly arranged on two sides of each support rod 17 and used for treating wastewater, a lift pipe 19 is communicated and arranged on the side wall of the treatment box 1, a lift pump 20 is arranged on the lift pipe 19, one end of the lift pipe 19 is communicated with the inner cavity of the treatment box 1 between the fine grid 7 and the aeration pipe 9, a confluence plate 21 is communicated and arranged at the other end of the lift pipe 19, a plurality of water outlet pipes 22 are communicated and arranged on the confluence plate 21, the water outlet pipes 22 are arranged towards the membrane module 16, a baffle 23 is arranged above the membrane module 16 in a non-contact manner, the baffle 23 is in a semi-closed manner, a disinfection filter screen 24 is arranged in the inner cavity of the treatment box 1, and the disinfection filter screen 24 is arranged between the baffle 23 and the water outlet pipe 25, so that the wastewater can be further disinfected and sterilized, and the discharged wastewater is safer, the side wall of the upper end of the treatment box 1 is provided with a drain pipe 25 in a communication mode, and the treated wastewater finally flows out of the drain pipe 25.

The bottom of the drain pipe 25 is communicated with the liquid storage plate 27 through the return pipe 26, the return pipe 26 is provided with a return valve 28, the liquid storage plate 27 is communicated with the flushing pipe 30 through a communication pipe 29, the flushing pipe 30 is communicated with a mouthpiece 31, the mouthpiece 31 is provided with a power pump 32, the bottom of the mouthpiece 31 is communicated with a first flushing cover 33, the first flushing cover 33 is used for flushing the MBR membrane 18, a sealing plate 34 is arranged in the inner cavity of the treatment box 1, the mouthpiece 31, the power pump 32 and the upper section of the first flushing cover 33 are arranged in the sealing plate 34, the arrangement can effectively protect the power pump 32 and avoid the damage of the power pump 32 caused by water inflow, the whole body is more attractive, the flushing pipe 30 is communicated with a second flushing cover 35, the second flushing cover 35 is used for flushing the aeration holes 901 and the anti-blocking nets in the aeration holes, an elastic sealing section 36 is arranged at the opening of the flushing pipe 30, a power pump switch 37 is arranged in the elastic sealing section 36, and the power pump switch 37 is in signal connection with the power pump 32 The bottom of the support rod 17 is fixedly provided with a sliding plate 38, the sliding plate 38 is movably arranged in a fixed frame 39, the sliding plate 38 can be lifted along the inner wall of the fixed frame 39, the inner wall of the open end of the fixed frame 39 is fixedly provided with a stop block 40, the stop block 40 can prevent the sliding plate 38 from being separated from the fixed frame 39 when moving, so that the device can be normally used for a long time, the bottom of the sliding plate 38 is fixedly provided with a cut-off rod 41, the cut-off rod 41 can press down the elastic sealing section 36, a compression spring 42 is connected and arranged between the sliding plate 38 and the bottom of the fixed frame 39, the compression spring 42 has good telescopic elasticity, when more impurities are attached to the MBR membrane 18, the compression spring 42 is pressed down due to the increased weight, and when the MBR membrane 18 is washed, the weight is reduced, and the slide plate 38 is lifted up by the compression spring 42 and returns to the original position.

Example three:

in the present embodiment, based on the first and second embodiments, the specific structure of the power device is further disclosed and defined, specifically: the power device comprises a rotating motor 10, the rotating motor 10 is fixedly arranged on a support plate 11, the support plate 11 is fixedly arranged on the outer wall of the treatment box 1, in this embodiment, the support plate 11 is L-shaped, the rotating motor 10 is convenient to place, a rotating shaft 12 is fixedly arranged on an output shaft of the rotating motor 10, one end of the rotating shaft 12, which is far away from the rotating motor 10, is fixed on an air pump 13, therefore, the rotating motor 10 in a starting state can drive the air pump 13 to rotate through the rotating shaft 12, the air pump 13 is communicated with the aeration pipe 9 through an air conveying rod 14, therefore, the air pump 13 can drive the aeration pipe 9 to rotate through the air conveying rod 14, so that the aeration holes 901 on the aeration pipe 9 can blow air flows in more directions, the air flows are more uniform, the effect of treating wastewater is improved, a bearing 15 is embedded in the inner wall of the treatment box 1, the air conveying rod 14 is arranged in the bearing 15, and the air conveying rod 14 can stably rotate due to the arrangement of the bearing 15, so that the rotation process is smoother.

The working principle is as follows:

when the waste water treatment device is used, firstly, waste water is led into an inner cavity of the treatment box 1 through the water inlet pipe 2, the waste water can sequentially pass through the thick through holes 601 on the thick grating 6 and the thin through holes 701 on the thin grating 7, and the diameter of the thick through holes 601 is larger than that of the thin through holes 701, so that large-sized impurity dirt in the waste water can be intercepted after the waste water sequentially passes through the thick grating 6 and the thin grating 7, and preliminary filtration is realized.

Then, the inner cavity of the treatment box 1 is divided into two parts because the partition plate 8 is in a full-sealing type, so that the arrangement can further prevent large-sized dirt from moving upwards, and is convenient for discharging larger impurity dirt from the sewage discharge hopper 3 and the sewage discharge pipe 4 subsequently; at this time, the lift pump 20 is started, and the primarily filtered wastewater is guided to the confluence plate 21 by the lift pipe 19 and finally sprayed out of the water outlet pipe 22, so that the wastewater uniformly passes through the plurality of MBR membranes 18, thereby realizing wastewater treatment.

Finally, the waste water bypasses the semi-closed baffle 23, is sterilized by the sterilizing filter net 24, and is finally discharged from the drain pipe 25.

In the above-mentioned wastewater treatment process, whether the aeration holes 901 of the aeration pipe 9 or the MBR membrane 18 on the membrane module 16 are likely to be clogged due to the dirt attached thereto, at this time, the return valve 28 may be opened to allow the wastewater treated in the drain pipe 25 to return to the liquid storage plate 27 through the return pipe 26, and the wastewater in the liquid storage plate 27 further enters the plurality of flushing pipes 30 through the communication pipe 29, and in a normal state, the wastewater in the flushing pipe 30 is sprayed out from the second flushing cover 35 under the action of a power source, such as a water pump, so as to flush and clean the aeration holes 901 of the aeration pipe 9, thereby preventing the aeration effect from being influenced by the clogging, but when more impurities are attached to the MBR membrane 18 at a corresponding position, the compression spring 42 is gradually pressed down, so that the position of the interception rod 41 is gradually lowered and is gradually inserted into the elastic sealing section 36 of the flushing pipe 30, so that this section is choked flow, and the water yield of spouting from the second washes in the cover 35 reduces, and the water yield of flow direction first washing cover 33 then increases, because the power pump switch 37 will be pressed to when damming lever 41 pushes down, power pump 32 starts this moment for rivers in the mouth-piece 31 can be according to higher speed spout first washing cover 33, realize more effectively washing to MBR membrane 18 from this. After the washing is finished, the MBR membrane 18 is lightened and is jacked up to return to the initial position under the action of the compression spring 42, the power pump 32 is not started at the moment, the water flow sprayed out of the first washing cover 33 is increased, the washing of the aeration holes 901 of the aeration pipe 9 is continuously realized, the MBR membrane and the washing are mutually related, the automatic switching is realized, and the using effect is better.

The rotating motor 10 used in the present invention may be D57BLD69-24A-15S model manufactured by demarke motor ltd, guangzhou city, the air pump 13 may be ZFSR50-300 model manufactured by jinandingfeng machinery manufacturing ltd, the lift pump 20 may be WQ100-100-15-7.5 model manufactured by shanghai wilford pump ltd, and the power pump 32 may be 125-315I model manufactured by taizhou galun pump ltd.

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

Claims

1. The utility model provides a membrane bioreactor waste water treatment equipment, includes treatment case (1), its characterized in that: the water inlet pipe (2) is communicated with the side wall of the lower end of the treatment box (1), a thick grating (6), a thin grating (7) and a partition plate (8) are fixedly arranged in the inner cavity of the treatment box (1) from bottom to top in sequence, a thick through hole (601) is formed in the thick grating (6), a thin through hole (701) is formed in the thin grating (7), an aeration pipe (9) is arranged above the partition plate (8), a plurality of aeration holes (901) are formed in the aeration pipe (9), an anti-blocking net is arranged in each aeration hole (901), and the aeration pipe (9) can be driven by a power device to rotate;

a membrane component (16) is arranged above the aerator pipe (9) without contacting, a plurality of support rods (17) are fixedly arranged on the membrane component (16), MBR membranes (18) are fixedly arranged on both sides of the support rod (17), a lift pipe (19) is communicated with the side wall of the treatment box (1), a lifting pump (20) is arranged on the lifting pipe (19), one end of the lifting pipe (19) is communicated with the inner cavity of the treatment box (1) between the fine grid (7) and the aeration pipe (9), the other end of the lifting pipe (19) is communicated with a confluence plate (21), the confluence plate (21) is communicated with a plurality of water outlet pipes (22), the water outlet pipe (22) is arranged towards the membrane module (16), a baffle (23) is arranged above the membrane module (16) in a non-contact way, a drain pipe (25) is communicated with the side wall of the upper end of the treatment box (1);

the bottom of the drain pipe (25) is communicated with a liquid storage plate (27) through a return pipe (26), a return valve (28) is arranged on the return pipe (26), the liquid storage plate (27) is communicated with a flushing pipe (30) through a communicating pipe (29), a connector pipe (31) is communicated with the flushing pipe (30), a power pump (32) is arranged on the connector pipe (31), a first flushing cover (33) is communicated with the bottom of the connector pipe (31), the first flushing cover (33) is used for flushing an MBR membrane (18), a second flushing cover (35) is communicated with the flushing pipe (30), the second flushing cover (35) is used for flushing an aeration hole (901) and an anti-blocking net in the aeration hole, an elastic sealing section (36) is arranged at the opening of the flushing pipe (30), a power pump switch (37) is wrapped in the elastic sealing section (36), and the power pump switch (37) is in signal connection with the power pump (32), the fixed slide (38) that is provided with in bottom of bracing piece (17), slide (38) activity sets up in fixed frame (39), the fixed damming pole (41) that is provided with in bottom of slide (38), just the sealed section of elasticity (36) can be pushed down to damming pole (41), it is provided with compression spring (42) to connect between slide (38) and fixed frame (39) bottom.

2. The membrane bioreactor wastewater treatment plant of claim 1, characterized in that: the bottom of the treatment box (1) is communicated with a sewage discharge funnel (3), a sewage discharge pipe (4) is fixedly arranged below the sewage discharge funnel (3), and a sewage discharge valve (5) is arranged on the sewage discharge pipe (4).

3. The membrane bioreactor wastewater treatment plant of claim 1, characterized in that: the power device comprises a rotating motor (10), a rotating shaft (12) is fixedly arranged on an output shaft of the rotating motor (10), one end, far away from the rotating motor (10), of the rotating shaft (12) is fixed on an air pump (13), and the air pump (13) is communicated with the aeration pipe (9) through an air conveying rod (14).

4. The membrane bioreactor wastewater treatment plant of claim 3, wherein: the rotating motor (10) is fixedly arranged on a support plate (11), and the support plate (11) is fixedly arranged on the outer wall of the treatment box (1).

5. A membrane bioreactor wastewater treatment plant according to claim 3, characterized in that: the inner wall of the treatment box (1) is embedded with a bearing (15), and the air conveying rod (14) is arranged in the bearing (15).

6. The membrane bioreactor wastewater treatment plant of claim 1, wherein: be provided with disinfection filter screen (24) in the inner chamber of handling case (1), just disinfection filter screen (24) set up between baffle (23) and drain pipe (25).

7. The membrane bioreactor wastewater treatment plant of claim 1, characterized in that: a sealing plate (34) is arranged in an inner cavity of the treatment box (1), and the upper sections of the interface tube (31), the power pump (32) and the first washing cover (33) are all arranged in the sealing plate (34).

8. The membrane bioreactor wastewater treatment plant of claim 1, characterized in that: and a stop block (40) is fixedly arranged on the inner wall of the opening end of the fixing frame (39).