CN214327255U

CN214327255U - External MBR reactor

Info

Publication number: CN214327255U
Application number: CN202023176144.2U
Authority: CN
Inventors: 黄春梅; 李永腾; 严松
Original assignee: Guangzhou Jiajing Water Treatment Technology Engineering Co ltd
Current assignee: Guangzhou Jiajing Water Treatment Technology Engineering Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-01
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses an external MBR reactor relates to sewage treatment technical field. An external MBR (membrane bioreactor) comprises a tank body, a tubular membrane and a backwashing tank, wherein a liquid inlet pipe is arranged at the upper end of the tank body, a first water pump is arranged on the liquid inlet pipe, an upper isolation plate and a lower isolation plate which are relatively parallel are arranged in the tank body from top to bottom, a plurality of corresponding round holes are uniformly distributed on the upper isolation plate and the lower isolation plate, the round holes at corresponding positions are communicated through the tubular membrane, a first water outlet pipe and a backwashing pipe are arranged on a tank body shell between the upper isolation plate and the lower isolation plate, the water outlet pipe and the backwashing pipe are connected with the backwashing tank, a second water pump and a gas pipe are arranged on the backwashing pipe, a second water outlet pipe is arranged on the backwashing tank, a pressure control device is installed at the bottom of the lower isolation plate, a liquid discharge pipe is connected to the lower side of the tank body, and a support frame is arranged at the bottom of the tank body. Adopt the utility model discloses technical scheme satisfies people and puts the requirement that can low energy consumption, high efficiency get rid of the particulate matter to external MBR reactor.

Description

External MBR reactor

Technical Field

The utility model belongs to the technical field of sewage treatment, a external MBR reactor is related to.

Background

At present, in sewage treatment, untreated sewage is generally subjected to AO and A²After biochemical reaction pond such as O handled, arrange to the sedimentation separation of going on in the sedimentation pond, get rid of thick granule suspended solid, tiny suspended solid in the reuse filter equipment (filtration membrane) removal sewage, filtration membrane need dip and carry out filtration separation in the sedimentation pond, the water side suction forms the negative pressure at filtration membrane production through negative pressure suction pump, but such water treatment mode leads to the large granule material to produce the deposit because concentration polarization easily on filtration membrane's membrane surface, only must set up the aeration in the bottom in order to solve the problem of deposit, the disturbance that utilizes air bubble reduces the deposit of large granule material, increased equipment investment on the one hand, on the other hand treatment effect is relatively poor, and, this water treatment mode washs inconveniently, need take out filter equipment from the sedimentation pond and just can wash.

In order to solve the problems, the Chinese patent (publication No. CN209878412U) discloses an external MBR flat ceramic membrane water treatment integrated device, which comprises a settling tank, a separating tank and a backwashing tank, wherein the separating tank is positioned outside the settling tank, a flat ceramic membrane group is arranged in the separating tank, the separating tank is also provided with a first opening, a second opening and a third opening, the first opening is arranged at the bottom of the separating tank, the second opening is arranged at the top of the separating tank, and the third opening is arranged on the side wall of the separating tank; the backwashing tank comprises a fourth opening, a fifth opening and a sixth opening, the fourth opening is arranged at the top of the backwashing tank, the fifth opening is arranged at the lower part of the backwashing tank side, and the sixth opening is arranged at the upper part of the backwashing tank side; the integrated device for the water treatment of the flat ceramic membrane further comprises a first pipe, a second pipe, a third pipe, a fourth pipe, a fifth pipe, a sixth pipe and a seventh pipe, wherein one end of the first pipe is inserted into the sedimentation tank, the other end of the first pipe is arranged at the first opening, one end of the second pipe is arranged at the third opening, the other end of the second pipe is connected with the third pipe, the other end of the third pipe is arranged at the fourth opening, one end of the fourth pipe is arranged at the sixth opening, the fourth pipe is a discharge pipe, one end of the fifth pipe is arranged at the second opening, the fifth pipe is a large-particle concentrated liquid pipe, one end of the sixth pipe is arranged at the joint of the second pipe and the third pipe, one end of the seventh pipe is arranged on the sixth pipe, and the other end of the seventh pipe is arranged at the fifth opening; the plate ceramic membrane water treatment integrated device also comprises a first valve, a second valve, a third valve and a fourth valve, wherein the first valve F1 is a water outlet pneumatic valve, the second valve F2 is a liquid inlet pneumatic valve, the third valve F3 is a concentrated liquid pneumatic valve, the fourth valve F4 is a backwashing pneumatic valve, the third valve F3 is arranged on a fifth pipe, the first valve F1 is arranged on the third pipe, the fourth valve is arranged on a seventh pipe, and the second valve F2 is arranged on the first pipe; the flat ceramic membrane water treatment integrated device also comprises a manual regulating valve SF1, the manual regulating valve SF1 is a pressure regulating valve, the manual regulating valve SF1 is installed on the fifth pipe, and the third valve F3 is positioned between the second opening and the manual regulating valve SF 1; the flat ceramic membrane water treatment integrated device also comprises a first pump and a second pump, wherein the first pump is arranged on the first pipe and is positioned between the second valve F2 and the settling tank; the second water pump is mounted on the seventh pipe between the fourth valve F4 and the fifth opening.

Although above-mentioned scheme is easily washd, need not take out filter equipment from the aquatic to can handle the large granule material of high concentration, the energy consumption is higher in its use, and is efficient, and is difficult to follow supreme discharge from the bottom with the particulate matter, very easily blocks up the device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an external MBR reactor satisfies people and puts the requirement that can low energy consumption, high-efficiently get rid of the particulate matter to external MBR reactor.

In order to solve the technical problem, the utility model discloses technical scheme as follows:

an external MBR (membrane bioreactor) comprises a tank body, a tubular membrane and a backwashing tank, wherein a liquid inlet pipe is arranged at the upper end of the tank body, a first water pump is arranged on the liquid inlet pipe, an upper isolation plate and a lower isolation plate which are relatively parallel are arranged in the tank body from top to bottom, a plurality of corresponding round holes are uniformly distributed on the upper isolation plate and the lower isolation plate, the round holes at corresponding positions are communicated through the tubular membrane, a first water outlet pipe and a backwashing pipe are arranged on a tank body shell between the upper isolation plate and the lower isolation plate, the water outlet pipe and the backwashing pipe are connected with the backwashing tank, a second water pump and a gas pipe are arranged on the backwashing pipe, a second water outlet pipe is arranged on the backwashing tank, a pressure control device is installed at the bottom of the lower isolation plate, a liquid discharge pipe is connected to the lower side of the tank body, and a support frame is arranged at the bottom of the tank body.

The utility model discloses technical scheme's principle and effect as follows:

when suspended particles in sewage need to be removed, the reactor is installed firstly, and the liquid inlet pipe, AO and A are connected²The biochemical process pools such as O and the like are connected, raw water is pumped into the tank body through a first water pump, the raw water is filtered and separated through a tubular membrane and a pressure control device, filtered clean water enters a backwashing tank through a first water outlet pipe, one part of the filtered clean water is stored in the backwashing tank, and the other part of the filtered clean water is discharged to a subsequent water treatment unit through a second water outlet pipe; the filtered and separated concentrated water flows to the reaction tank again through the liquid discharge pipe, so that the reaction tank has enough sludge, and sewage can be better subjected to biochemical treatment.

When the tubular membrane is backwashed in needs, can start the second water pump, take out the clean water in the backwash box, wash the tubular membrane, extrude away the particulate matter in the tubular membrane filtration pore through clean water from outer to interior pressure, still can carry compressed air to the backwash pipe through the trachea, improve the washing effect for resume membrane flux.

The utility model discloses external MBR reactor is put upper portion and is intake, the lower part is gone out water to be equipped with accuse pressure device, compare with the lower part of the dull and stereotyped ceramic membrane water treatment integrated device of external MBR of prior art is intake, the upper portion is gone out water, the utility model discloses the power consumption is lower, and the water in the jar body can not produce the oppression to the feed liquor, increases first water pump energy consumption, also need not like prior art, keeps high-power to erodeing the particulate matter in the tubular membrane from bottom to top, prevents that the granule from blockking up; the utility model discloses device is pressed in accessible accuse for the intraductal water of tubular is filtered off under the unchangeable circumstances of energy consumption and is filtered off more clean water.

Furthermore, the round hole of the upper isolation plate is larger than the round hole at the corresponding position of the lower isolation plate, and the upper end opening of the tubular membrane is larger than the lower end opening.

Therefore, the upper layer water flow in the tubular membrane can exert a force on the lower layer water flow, so that the effect of the lower layer water flow permeating to the outside of the tubular membrane is better.

Further, the pressure control device comprises a telescopic rod arranged at the bottom of the inner cavity of the tank body, a baffle plate is arranged on the telescopic rod, and the baffle plate is attached to the lower isolation plate.

Therefore, the pressure of water flow in the tubular membrane to the membrane can be regulated and controlled by moving the baffle up and down, so that the water flow has a tendency of moving towards the tube wall, thereby better filtering and generating more clean water.

Further, external MBR reactor still includes first manometer, pressure sensor and second manometer, and first manometer is installed on the feed liquor pipe, and pressure sensor installs on a tubular membrane inner wall, and the second manometer is installed on the fluid-discharge tube.

Therefore, the pressure in the liquid inlet pipe can be detected by the first pressure gauge, the pressure in the tubular membrane can be detected by the pressure sensor, and the pressure in the liquid outlet pipe can be detected by the second pressure gauge, so that the externally-arranged MBR is regulated and controlled, the optimal permeation is achieved and more clean water is discharged under the condition that the pipeline is not damaged or high load is caused to the pipeline.

Furthermore, the liquid inlet pipe, the first water outlet pipe, the backwashing pipe, the air pipe and the liquid discharge pipe are all provided with control valves.

Therefore, water inlet, water outlet and back flushing can be regulated and controlled through the valve, and the smooth proceeding of the water treatment process is ensured.

Furthermore, the inner pipe wall of the water inlet end of the water inlet pipe is provided with a separation block sheet.

Therefore, the partition sheet can be used for blocking part of particles in the inlet water, and the amount of particles entering the tubular membrane is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an external MBR reactor of the present invention;

the reference numbers in the figures are as follows: the device comprises a tank body 1, a backwashing tank 2, a liquid inlet pipe 3, a first pressure gauge 31, a first water pump 4, an upper isolation plate 5, a lower isolation plate 6, a tubular membrane 7, a pressure sensor 71, a first water outlet pipe 8, a backwashing pipe 9, a second water pump 10, an air pipe 11, a second water outlet pipe 12, a pressure control device 13, an expansion link 131, a baffle plate 132, a liquid discharge pipe 14, a second pressure gauge 141 and a baffle plate 15.

Detailed Description

The invention will be described in further detail with reference to the following drawings and detailed description:

as shown in figure 1, the external MBR reactor comprises a tank body 1, a tubular membrane 7 and a back washing tank 2, wherein a liquid inlet pipe 3 is arranged at the upper end of the tank body 1, a first water pump 4 is arranged on the liquid inlet pipe 3, a first pressure gauge 31 is arranged at the right side of the first water pump 4, a separation blade 15 is arranged in the water inlet end at the left side of the liquid inlet pipe 3, the separation blades 15 are uniformly distributed on the inner wall of the liquid inlet pipe 3 at intervals, an upper separation plate 5 is arranged in the tank body 1, a lower separation plate 6 is arranged below the upper separation plate 5, the upper separation plate 5 is parallel to the lower separation plate 6, a plurality of corresponding round holes are uniformly distributed on the upper separation plate 5 and the lower separation plate 6, the round holes of the upper separation plate 5 are larger than the round holes at the corresponding positions of the lower separation plate 6, the pipe diameter of the tubular membrane 7 is gradually reduced from top to bottom, the round holes at the corresponding positions of the upper separation plate 5 and the lower separation plate 6 are communicated through the tubular membrane 7, and the pipe wall of the tubular membrane 7 is hermetically connected with the corresponding round holes, a pressure sensor 71 is arranged on the inner wall of the tubular membrane 7, a first water outlet pipe 8 close to the lower isolation plate 6 and a back flushing pipe 9 close to the upper isolation plate 5 are arranged on a shell of the tank body 1 between the upper isolation plate 5 and the lower isolation plate 6, the first water outlet pipe 8 and the back flushing pipe 9 are both connected with a back flushing tank 2, a second water pump 10 is arranged on the back flushing pipe 9, an air pipe 11 is arranged on the left side of the second water pump 10, a second water outlet pipe 12 is connected with the back flushing tank 2, a pressure control device 13 is arranged at the bottom of the lower isolation plate 6, the pressure control device 13 comprises a telescopic rod 131 arranged at the bottom of an inner cavity of the tank body 1, the top 131 of the telescopic rod is fixedly connected with a baffle 132, the baffle 132 is attached to the lower isolation plate 6, a drain pipe 14 is connected to the lower side of the tank body 1, a second pressure gauge 141 is arranged on the drain pipe 14, a liquid inlet support is arranged at the bottom of the tank body 1, a liquid inlet pipe 3, a first water outlet pipe 8, a back flushing pipe 9, Control valves are arranged on the air pipe 11 and the liquid discharge pipe 14.

When the external MBR is used for removing suspended particulate matters in sewage, the reactor is installed and debugged, the water inlet end of the liquid inlet pipe 3 is connected with biochemical process pools such as AO and A2O, then the first water pump 4 is started to pump water in the reaction pool into the tank body 1, the water in the tank body 1 flows from top to bottom, the inlet water is firstly gathered on the upper isolation plate 5 and then enters the tubular membrane 7 through the round hole on the upper isolation plate 5, the inlet water is divided into two parts in the downward flowing process of the tubular membrane 7, one part of the inlet water passes through the tubular membrane 7 to become clean water, the other part of the inlet water continues to flow downwards along the tubular membrane 7 to become concentrated water with high particulate matter content, the clean water enters the backwashing tank 2 through the first water outlet pipe 8, one part of the clean water is stored in the backwashing tank 3, and the other part of the clean water flows to the subsequent water treatment unit through the second water outlet pipe 12 for treatment; after contacting with the baffle 132, the concentrated water flows along the baffle 132, finally converges at the bottom of the tank body 1 and flows into the reaction tank again through the liquid discharge pipe 14; when sewage flows in the reactor, an operator can know the operation conditions of the liquid inlet pipe 3, the tubular membrane 7 and the liquid discharge pipe 14 in real time according to the first pressure gauge 31, the pressure sensor 71 and the second pressure gauge 141, reasonably adjust the water inflow, and adjust the telescopic rod 131 to drive the baffle 132 to move, so that the baffle 132 has a barrier to the water outlet of the tubular membrane 7, and the water in the tubular membrane 7 can be filtered and separated to the maximum extent.

When the tubular membrane 7 needs to be backwashed, the valves of the first water pump 4, the first water outlet pipe 8 and the liquid discharge pipe 14 are closed firstly, then the second water pump 10 is started to pump clean water in the backwash tank 2, the tubular membrane 7 is backwashed by the clean water, compressed air is conveyed to the backwash pipe 9 through the air pipe 11, the particles in the filter holes of the tubular membrane 7 are impacted by the water and the compressed air, after all the particles are washed away, the valve of the water discharge pipe 14 is opened to discharge the particles outwards, then the second water pump 10 is closed, and a new round of sewage is filtered and separated.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides an external MBR reactor, includes jar body (1), tubular membrane (7) and back flush case (2), its characterized in that: the utility model discloses a washing tank, including the jar body (1), be equipped with feed liquor pipe (3) on the feed liquor pipe (3), be equipped with first water pump (4) on the jar body (1) from last division board (5) and lower division board (6) that are equipped with relative parallel extremely down, it has a plurality of corresponding round holes to go up to divide equally cloth on division board (5) and lower division board (6), the round hole that corresponds the position all communicates through tubular membrane (7), upward be equipped with first outlet pipe (8) and backwash pipe (9) on jar body (1) casing between division board (5) and lower division board (6), outlet pipe (8) and backwash pipe (9) all are connected with backwash box (2), be equipped with second water pump (10) and trachea (11) on backwash pipe (9), be equipped with second outlet pipe (12) on backwash box (2), accuse pressure equipment (13) is installed to division board (6) bottom down, the liquid discharge pipe (14) is connected to the lower side of the tank body (1), and a support frame is arranged at the bottom of the tank body (1).

2. The external MBR reactor of claim 1, wherein: the round hole of the upper isolation plate (5) is larger than the round hole of the corresponding position of the lower isolation plate (6), and the upper end opening of the tubular membrane (7) is larger than the lower end opening.

3. The external MBR reactor of claim 1, wherein: the pressure control device (13) comprises a telescopic rod (131) arranged at the bottom of the inner cavity of the tank body (1), a baffle (132) is arranged on the telescopic rod (131), and the baffle (132) is attached to the lower isolation plate (6).

4. The external MBR reactor of claim 1, wherein: the external MBR reactor further comprises a first pressure gauge (31), a pressure sensor (71) and a second pressure gauge (141), wherein the first pressure gauge (31) is installed on the liquid inlet pipe (3), the pressure sensor (71) is installed on the inner wall of the tubular membrane (7), and the second pressure gauge (141) is installed on the liquid discharge pipe (14).

5. The external MBR reactor of claim 1, wherein: and control valves are arranged on the liquid inlet pipe (3), the first water outlet pipe (8), the backwashing pipe (9), the air pipe (11) and the liquid discharge pipe (14).

6. The external MBR reactor of claim 1, wherein: the inner pipe wall of the water inlet end of the liquid inlet pipe (3) is provided with a separation block piece (15).