CN211813661U - Improved MBR (Membrane biological reactor) - Google Patents

Abstract

The utility model relates to the technical field of sewage treatment equipment, in particular to an improved MBR (membrane bioreactor) with good dredging effect, which comprises a box body, a water inlet pipe, a water drain pipe, a membrane component and an aeration component, wherein the box body comprises a purification chamber and an activity chamber, the water inlet pipe is arranged at the bottom end of one side surface of the box body and is communicated with the purification chamber, the water drain pipe is arranged at the top end of the other side surface of the box body and is communicated with the purification chamber, the water drain pipe is used for discharging purified water, the membrane component is accommodated in the purification chamber and comprises a plurality of membranes which are arranged in a stacking way, the ring side surface of each membrane is respectively abutted against the inner surface of the box body, the aeration component comprises an aeration pipe, a plurality of aeration heads, a servo motor and a screw rod, two ends of the aeration pipe are respectively communicated with an external air pump and the activity chamber, the aeration heads are connected in sequence and, the servo motor, the screw rod and the aeration head closest to the screw rod are sequentially connected.

Description

Improved MBR (Membrane biological reactor)

Technical Field

The utility model relates to the technical field of sewage treatment equipment, in particular to an improved MBR (membrane bioreactor).

Background

An MBR (membrane bioreactor) is a novel ecological wastewater treatment system which organically combines a membrane separation technology and a biological treatment technology, and adopts a membrane component to replace a terminal secondary sedimentation tank of the traditional biological treatment technology, so that the high active sludge concentration is kept in the bioreactor, the biological treatment organic load is improved, the occupied area of a sewage treatment facility is reduced, and the residual sludge amount is reduced by keeping the low sludge load. The membrane bioreactor has an effective interception effect, can retain microorganisms with longer generation period, realizes deep purification of sewage, simultaneously can fully reproduce nitrobacteria in a system, has obvious nitrification effect, and can realize deep dephosphorization and denitrification operation of sewage, thereby improving the sewage treatment effect.

However, the aeration device of the conventional MBR membrane bioreactor is fixed in the air outlet direction of the membrane module, the air flow generated by the aeration device has incomplete erosion effect on the sludge on the membrane module, the sludge is accumulated on the membrane module for a long time to cause the blockage of the membrane, and further the normal use of the membrane bioreactor is influenced, and frequent dredging operation on the membrane module aggravates the maintenance and operation cost of the membrane bioreactor, further increases the sewage treatment cost, and is not beneficial to improving the market competitiveness of the membrane bioreactor product.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide an improved MBR membrane bioreactor for the technical problem that the sludge is not easy to be removed.

An improved MBR membrane bioreactor comprises a box body, a water inlet pipe, a water discharge pipe, a membrane component and an aeration component, wherein the box body is provided with a purifying chamber and a moving chamber, the purifying chamber is adjacent to the top of the box body, the moving chamber is adjacent to the bottom of the box body, the purifying chamber and the moving chamber are independently arranged, the water inlet pipe is arranged at the bottom of one side surface of the box body and communicated with the purifying chamber, the water inlet pipe is used for accessing sewage to be purified, the water discharge pipe is arranged at the top of the other side surface of the box body and communicated with the purifying chamber, the water discharge pipe is used for communicating with an external water suction pump and discharging purified water, the membrane component is contained in the purifying chamber and comprises a plurality of membranes which are arranged in a stacked mode, and the ring side surface of each membrane is respectively abutted against the inner surface of the box body, the aeration assembly is arranged at the bottom of the box body and comprises an aeration pipe, a plurality of aeration heads, a servo motor and a screw rod, one end of the aeration pipe is used for being communicated with an external air pump, the other end of the aeration pipe is sealed and inserted in the movable chamber, the aeration heads are respectively connected with the aeration pipe in a swinging mode along the length direction of the aeration pipe, the aeration heads are arranged in parallel and are sequentially and elastically connected, the output end of each aeration head is respectively inserted in the purification chamber and corresponds to the diaphragm at the bottom of the diaphragm assembly, the servo motor is arranged at the bottom of the outer surface of the box body and is used for being electrically connected with an external power supply, one end of the screw rod is connected with the output end of the servo motor, and the other end of the screw rod is inserted in the movable chamber and is rotatably connected with the aeration head adjacent to.

In one embodiment, the aeration head is integrally formed with a threaded hose of the aeration pipe.

In one embodiment, the aeration head is integrally formed with a bendable sizing tube of the aeration tube.

In one embodiment, the output end of the aeration head is provided with a check valve.

In one embodiment, the check valve comprises a valve ring and a valve cover, the valve ring is mounted at the output end of the aeration head, the valve cover is far away from the output end of the aeration head and is connected with one end of the valve ring in a swinging mode, and a valve port with an adjustable size is arranged between the valve cover and the valve ring.

In one embodiment, a sealing rubber ring is arranged at the joint of the aeration head and the box body.

In one embodiment, the distance between two adjacent membranes is between 3 cm and 8 cm.

In one embodiment, a plurality of spherical fillers are respectively filled between every two adjacent membranes, and the fillers have a large number of microbial pores.

In one embodiment, the diaphragm assembly further comprises a mounting bracket, the mounting bracket is connected with the inner surface of the box body in a sealing manner, the mounting bracket is provided with a mounting space, and each diaphragm is accommodated in the mounting space and is respectively connected with the mounting bracket.

In one embodiment, the mounting bracket is provided with a sliding groove, and the diaphragm is inserted into the sliding groove and abuts against the inner surface of the sliding groove.

In the improved MBR membrane bioreactor, the servo motor and the screw rod are additionally arranged on the basis of the traditional membrane bioreactor, in the purification process of sewage, the servo motor drives the screw rod to move, and further drives each aeration head to do periodic swinging motion relative to the aeration pipe so as to adjust the orientation of the output end of the aeration pipe, namely, the aeration direction of the aeration pipe is adjusted, thus, the air flow introduced into the purification chamber frequently moves and promotes the sewage in the purification chamber to rapidly flow to form turbulent flow, the fluidity of the sewage is improved, the possibility that impurities in the sewage are attached to the membrane is reduced, in addition, the scouring direction of the turbulent flow sewage is continuously changed, each part of the membrane is scoured, the sludge attached to the membrane is peeled off from the membrane, the membrane is not easy to block, and the desilting operation frequency of the membrane bioreactor and the maintenance and operation cost of equipment are reduced, thereby reducing the cost of sewage treatment.

Drawings

FIG. 1 is a schematic sectional view of an improved MBR membrane bioreactor in one embodiment;

FIG. 2 is a schematic diagram of a diaphragm assembly according to one embodiment;

FIG. 3 is a partially enlarged view of the portion A in the embodiment of FIG. 2;

FIG. 4 is a schematic structural view of an aeration assembly according to one embodiment;

fig. 5 is a schematic structural view of a check valve in one embodiment.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1, the present invention provides an improved MBR membrane bioreactor 10, the improved MBR membrane bioreactor 10 includes a tank 100, a water inlet pipe 200, a water outlet pipe 300, a membrane module 400 and an aeration module 500, the tank 100 includes a purification chamber 110 and a movable chamber 120, the purification chamber 110 is adjacent to the top of the tank 100, the movable chamber 120 is adjacent to the bottom of the tank 100, the purification chamber 110 and the movable chamber 120 are independently disposed, the water inlet pipe 200 is disposed at the bottom of one side of the tank 100 and is communicated with the purification chamber 110, the water inlet pipe 200 is used for receiving the sewage to be purified, the water outlet pipe 300 is disposed at the top of the other side of the tank 100 and is communicated with the purification chamber 110, the water outlet pipe 300 is used for communicating with an external water pump and discharging the purified water, the membrane module 400 is received in the purification chamber 110, the membrane module 400 includes a plurality of membranes 410 stacked, the side of each membrane 410 is abutted to the, the aeration assembly 500 is arranged at the bottom of the box body 100, the aeration assembly 500 comprises an aeration pipe 510, a plurality of aeration heads 520, a servo motor 530 and a screw rod 540, one end of the aeration pipe 510 is used for being communicated with an external air pump, the other end of the aeration pipe 510 is sealed and inserted in the movable chamber 120, the aeration heads 520 are respectively connected with the aeration pipe 510 in a swinging mode along the length direction of the aeration pipe 510, the aeration heads 520 are arranged in parallel and are sequentially and elastically connected, the output end of each aeration head 520 is respectively inserted in the purification chamber 110 and corresponds to the membrane 410 at the bottom of the membrane assembly 400, the servo motor 530 is arranged at the bottom of the outer surface of the box body 100 and is used for being electrically connected with an external power supply, one end of the screw rod 540 is connected with the output end of the servo motor 530, and the other end.

In the improved MBR (membrane bioreactor) 10, the servo motor 530 and the screw rod 540 are additionally arranged on the basis of the traditional membrane bioreactor, in the sewage purification process, the servo motor 530 drives the screw rod 540 to move, and further drives each aeration head 520 to do periodic swinging motion relative to the aeration pipe 510 so as to adjust the orientation of the output end of the aeration pipe 510, namely, adjust the aeration direction of the aeration pipe 510, thus, the air flow introduced into the purification chamber 110 frequently moves and promotes the sewage in the purification chamber 110 to rapidly flow to form turbulent flow, the fluidity of the sewage is improved, the possibility of the impurities in the sewage attaching to the membrane 410 is reduced, in addition, the scouring direction of the turbulent sewage is continuously changed, each part of the membrane 410 is scoured, so that the sludge attached to the membrane 410 is peeled off from the membrane 410, the membrane 410 is not easy to be blocked, the dredging operation frequency of the membrane bioreactor and the maintenance and the operation cost of equipment are reduced, thereby reducing the cost of sewage treatment.

The box 100 is used for accommodating the membrane module 400 and the aeration module 500 and providing space for sewage purification operation, in other words, the membrane bioreactor of the invention integrates all the components into a whole through the box 100, thereby reducing the whole volume of the membrane bioreactor and promoting the development of sewage treatment equipment towards miniaturization direction. In one embodiment, a cover 130 is disposed on the top of the box 100 and can cover the box 100. By arranging the tank cover 130, the purification chamber 110 can be isolated from the external environment, and external foreign matters are prevented from falling into the purification chamber 110, thereby damaging the membrane 410 or causing purified water pollution, so that the normal operation of sewage purification operation and the reliability of sewage treatment are ensured. Of course, in the actual production operation, under the condition of ensuring the production safety, the box body 100 can be opened, so as to facilitate the real-time inspection of the sewage treatment operation condition and the sludge adhesion condition on the surface of the membrane 410, which is not described herein again.

The water inlet pipe 200 is used to communicate with an external wastewater tank and to introduce wastewater to be treated into the purification chamber 110, so as to facilitate the filtering and purification of wastewater in the purification chamber 110. The drain pipe 300 is used for communicating with an external water pump, and discharging purified clean water to the external water pump, so as to separate the clean water from sewage. It should be noted that, by respectively disposing the water inlet pipe 200 at the bottom of one side of the box 100 and the water outlet pipe 300 at the top of the other side of the box 100, on one hand, the flow path of the sewage in the purification chamber 110 is prolonged, the purification time of the sewage is prolonged, and the purpose of improving the purification effect of the sewage is achieved, and on the other hand, in the process of separating the water in the sewage from the sludge, the sludge is accumulated at the bottom of the box 100 under the action of gravity, so that the problem that the membrane 410 is blocked or even overloaded and broken due to the large amount of sludge accumulated on the membrane 410 when the water inlet pipe 200 is disposed at the top of the box 100 and the water outlet pipe 300 is disposed at the top of the box 100 is avoided, so as to prolong the service life of the membrane 410 and ensure the effective operation of the sewage treatment.

The membrane module 400 is used to filter the contaminated water to remove particulate impurities from the contaminated water. In one embodiment, the distance between two adjacent diaphragms 410 is between 3 cm and 8 cm. Preferably, a plurality of spherical fillers 420 are respectively filled between each two adjacent membranes 410, and a large number of microbial pores are formed on the fillers 420. In other words, the filler 420 having a thickness of 3 to 8 cm is filled between two adjacent diaphragms 410. The filler 420 is used for selectively filtering microorganisms in the sewage, so that beneficial microorganism colonies in the sewage pass through the filler and the membrane 410 and enter the purified clean water, thereby promoting improvement of the water quality of the purified water body.

Referring to fig. 2, in an embodiment, the diaphragm assembly 400 further includes a mounting bracket 430, the mounting bracket 430 is hermetically connected to an inner surface of the housing 100, the mounting bracket 430 has a mounting space 431, and each diaphragm 410 is accommodated in the mounting space 431 and is respectively connected to the mounting bracket 430. Through setting up installing support 430, improved the integrated nature of membrane module 400, in the assembly process of membrane bioreactor, only need with the internal surface of installing in box 100 of membrane module 400 in groups can, greatly reduced the assembly degree of difficulty of membrane bioreactor. Referring to fig. 3, in an embodiment, the mounting bracket 430 is provided with a sliding groove 432, and the diaphragm 410 is inserted into the sliding groove 432 and abuts against an inner surface of the sliding groove 432. Through seting up spout 432 on installing support 430, in the installation of diaphragm 410, only need insert diaphragm 410 and locate spout 432 and can realize being connected of diaphragm 410 and installing support 430, the installation degree of difficulty of diaphragm 410 has been reduced, furthermore, in the use of diaphragm 410, can take off the diaphragm 410 of damage inefficacy alone from installing support 430 and change, the waste of the whole change production of diaphragm subassembly 400 has been avoided, greatly reduced the use cost of diaphragm subassembly 400.

The aeration assembly 500 is used for providing oxygen to the purification chamber 110 to facilitate the oxidative growth of microorganisms in the water, and in addition, the aeration assembly 500 is also used for generating airflow to accelerate the flow rate of the water in the purification chamber 110, so as to wash away the sludge on the membrane 410 and reduce the adhesion of the sludge on the membrane 410, so as to prolong the service life of the membrane 410 and ensure the effective use of the membrane bioreactor, and the working principle of the aeration assembly 500 is described below with reference to fig. 4. In the working process of the membrane bioreactor, the aeration pipe 510 is connected with air by an external air pump, and the air moves to the purification chamber 110 through the aeration pipe 510 under the action of the external air pump and forms an air flow to drive the sewage in the purification chamber 110 to move rapidly. Meanwhile, the servo motor 530 is connected with an external power supply, during the first half of the working period of the servo motor 530, the rotor of the servo motor 530 rotates in the forward direction and drives the screw rod 540 to rotate, and since the screw rod 540 is rotatably connected with the aeration head 520 nearest to the screw rod 540, the screw rod 540 drives the aeration head 520 to deflect in the direction close to the servo motor 530 in the rotating process, and further, the aeration head 520 drives the other aeration head 520 elastically connected with the screw rod 520 and the rest of the aeration heads 520 to synchronously deflect in the direction close to the servo motor 530, so that the aeration direction of each aeration head 520 deflects to one side of the purification chamber 110. In the latter half of the working period of the servo motor 530, the rotor of the servo motor 530 reversely rotates and drives the screw rod 540 to rotate, and the screw rod 540 drives the aeration head 520 closest to the screw rod 540 to deflect in the direction away from the servo motor 530 in the process of rotating, so that the aeration direction of each aeration head 520 is deflected to the other side of the purification chamber 110. In this way, the servo motor 530 and the screw 540 drive the aeration heads 520 to periodically deflect relative to the aeration pipes 510, so that the air ejected from the aeration heads 520 can reach any position on the membrane 410, and the rapid change of the air flow can also promote the sewage in the purification chamber 110 to generate turbulence, so as to reduce the retention time of the sludge on the membrane 410.

In one embodiment, the aerator 520 is integrally formed with the threaded hose of the aerator pipe 510. In another embodiment, aeration head 520 is integrally formed with the flexible sizing tube of aeration tube 510. Through the design of aeration head 520 for the screw thread rubber tube or the crooked sizing pipe with aeration pipe 510 integral type shaping, aeration head 520's fatigue strength is higher, in other words, aeration head 520 can be for aeration pipe 510 pivoted number of times greatly increased to aeration head 520's life has been prolonged, and then reduced membrane bioreactor's use cost.

Referring to fig. 4 and 5, in one embodiment, the output end of the aeration head 520 is provided with a check valve 550. Preferably, the check valve 550 includes a valve ring 551 and a valve cover 552, the valve ring 551 is installed at the output end of the aeration head 520, the valve cover 552 is far away from the output end of the aeration head 520 and is connected with one end of the valve ring 551 in a swinging manner, and a valve port 553 with adjustable size is arranged between the valve cover 552 and the valve ring 551. The check valve 550 is used to prevent the sewage to be purified from flowing back to the external air pump, and further, the leakage and damage of the external air pump are caused, so as to ensure the safety and reliability of the sewage purification operation. During the operation of the membrane bioreactor, air enters the aeration tube 510 from the external air pump and impacts the valve cover 552, so that the free end of the valve cover 552 swings away from the valve ring 551, and thus the valve port 553 becomes larger to facilitate the air flow into the purification chamber 110. When the air supply to the purification chamber 110 is stopped, the pressure of the waste water on the check valve 550 will make the valve cover 552 close to the edge of the port of the valve ring 551, in other words, the valve port 553 is closed, thereby preventing the waste water from entering the external air pump through the check valve 550.

In one embodiment, a sealing rubber ring is disposed at the connection position of the aeration head 520 and the box 100. Through set up the sealed ring of gluing in aeration head 520 and box 100 junction, can avoid the emergence of the room 120 pollution problem that causes because of the sewage entering activity room 120 in the clean room 110, so, need not frequent clearance activity room 120's ponding, reduced the maintenance degree of difficulty of equipment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An improved MBR membrane bioreactor is characterized by comprising a box body, a water inlet pipe, a water outlet pipe, a membrane component and an aeration component, wherein the box body is provided with a purifying chamber and a moving chamber, the purifying chamber is adjacent to the top of the box body, the moving chamber is adjacent to the bottom of the box body, the purifying chamber and the moving chamber are independently arranged, the water inlet pipe is arranged at the bottom end of one side surface of the box body and communicated with the purifying chamber, the water inlet pipe is used for accessing sewage to be purified, the water outlet pipe is arranged at the top end of the other side surface of the box body and communicated with the purifying chamber, the water outlet pipe is used for communicating with an external water suction pump and discharging purified water, the membrane component is contained in the purifying chamber and comprises a plurality of membranes which are arranged in a stacked mode, the ring side surface of each membrane is respectively abutted against the inner surface, the aeration assembly is arranged at the bottom of the box body and comprises an aeration pipe, a plurality of aeration heads, a servo motor and a screw rod, one end of the aeration pipe is used for being communicated with an external air pump, the other end of the aeration pipe is sealed and inserted in the movable chamber, the aeration heads are respectively connected with the aeration pipe in a swinging mode along the length direction of the aeration pipe, the aeration heads are arranged in parallel and are sequentially and elastically connected, the output end of each aeration head is respectively inserted in the purification chamber and corresponds to the diaphragm at the bottom of the diaphragm assembly, the servo motor is arranged at the bottom of the outer surface of the box body and is used for being electrically connected with an external power supply, one end of the screw rod is connected with the output end of the servo motor, and the other end of the screw rod is inserted in the movable chamber and is rotatably connected with the aeration head adjacent to.

2. The improved MBR membrane bioreactor of claim 1, wherein the aerator is integrally formed with a threaded rubber tube of the aerator pipe.

3. The improved MBR membrane bioreactor of claim 1, wherein the aeration head is integrally formed on the bendable sizing tube of the aeration tube.

4. The improved MBR membrane bioreactor according to any one of claims 2 or 3, wherein the output end of the aeration head is provided with a check valve.

5. The improved MBR membrane bioreactor according to claim 4, wherein the check valve comprises a valve ring and a valve cover, the valve ring is installed at the output end of the aeration head, the valve cover is far away from the output end of the aeration head and is in swing connection with one end of the valve ring, and a valve port with adjustable size is arranged between the valve cover and the valve ring.

6. The improved MBR membrane bioreactor according to claim 4, wherein a sealing rubber ring is arranged at the joint of the aeration head and the tank body.

7. The improved MBR membrane bioreactor of claim 1, wherein the distance between two adjacent membrane sheets is between 3 cm and 8 cm.

8. The improved MBR membrane bioreactor according to claim 1, wherein a plurality of spherical fillers are respectively filled between each two adjacent membranes, and the fillers have a large number of microbial pores.

9. The improved MBR membrane bioreactor according to claim 1, wherein the membrane module further comprises a mounting bracket, the mounting bracket is connected with the inner surface of the tank body in a sealing manner, the mounting bracket is provided with a mounting space, and each membrane is accommodated in the mounting space and is respectively connected with the mounting bracket.

10. The improved MBR membrane bioreactor according to claim 9, wherein the mounting bracket is provided with a chute, and the membrane is inserted into the chute and abuts against the inner surface of the chute.

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