CN220907272U - Pulse aerator and MBR component device composed of same - Google Patents

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a pulse aerator and an MBR component device composed of the pulse aerator. The utility model disperses and discharges the gas in different directions instantly through the discharge holes and the release holes, the aeration release amount is obviously increased, and the utility model is beneficial to improving the strength of aeration scrubbing membrane wires and promoting more uniform aeration release. The utility model adopts the gas collection type pulse aeration mode to carry out intermittent aeration, has shorter intermittent time, and is beneficial to improving the aeration efficiency and the effect of aeration scrubbing membrane filaments. The outer shell with the bottom in an open structure and the air inlet groove effectively prevent sludge from accumulating in the air inlet groove, effectively avoid blocking of an aeration pipeline, further reduce air inflow and reduce energy consumption while ensuring the strength and the effect of aeration scrubbing membrane wires. Through set up at MBR membrane frame top and hang the subassembly, effectively avoid a large amount of mud to pile up on the membrane silk, further alleviate the dirty stifled, the pollution scheduling condition of membrane, ensured the steady operation of MBR system.

Description

Pulse aerator and MBR component device composed of same

Technical Field

The utility model belongs to the technical field of sewage treatment, and particularly relates to a pulse aerator and an MBR component device composed of the pulse aerator.

Background

The MBR membrane bioreactor is a novel efficient sewage treatment process combining efficient membrane separation technology with a traditional activated sludge process. The sewage is filtered by the hollow fiber membrane, and the sewage treatment device has the characteristics of strong treatment capacity, high solid-liquid separation efficiency, good effluent quality, small occupied area, simple operation management and the like.

The aeration function in the MBR membrane system is to sweep the surface of the membrane from bottom to top through the turbulence generated by the gas-water mixed solution, and inhibit the aggravation of membrane pollution while removing the mud on the surface of the membrane. In order to ensure the surface cleaning of the membrane wires, high-strength gas-water flushing is required, so that the extremely high aeration energy consumption is brought.

The conventional aeration mode of MBR adopts a perforation aeration technology, and the working principle of the perforation aeration technology is as follows: the perforated aeration pipe wall is uniformly provided with a plurality of equal-diameter circular perforations with the diameters of 4-8 mm along the length direction, the perforated aeration pipe is arranged at the bottom of the MBR membrane frame through a fixed bracket, the circular perforations are vertically downward, gas passes out of the circular perforations and is subjected to buoyancy, and bubbles quickly rise to wash the surface of membrane wires. However, the perforated aeration is in a form of high-resistance perforated gas distribution, when gas inflow is stopped, sewage and sludge easily enter the cavity in the aeration pipe, and after a period of time, the sludge is deposited to the bottom of the pipe and accumulated together, and at the moment, the aeration pipe becomes a horizontally placed deposition pipe. When aeration is performed again, gas reenters the aeration pipe, water can be discharged outside the aeration pipe, but sludge at the bottom of the aeration pipe still adheres to the bottom of the pipe due to the fact that the specific gravity and the viscosity of the sludge are large, the sludge cannot be discharged outside the aeration pipe, and the aeration pipe is easy to be blocked. The blocking of the aeration pipeline can further cause the problem of high transmembrane pressure difference.

In addition, the traditional MBR membrane rack is installed in place, namely, the MBR membrane rack is directly placed on the lower surface of the pool. And under the condition of overhigh sludge concentration, a large amount of sludge can be precipitated at the bottom of the tank under the action of gravity. The installation mode is extremely easy to cause that a large amount of sludge is accumulated in the membrane wires, and the conditions of membrane blockage, pollution and the like are further aggravated due to long-time operation.

Disclosure of utility model

The utility model provides a pulse aerator and an MBR component device formed by the pulse aerator, which are used for overcoming the defects that an aerator in the prior art is easy to block an aeration pipeline, has low air scrubbing strength and poor effect, has long aeration intermittent time and is easy to aggravate the fouling and pollution of a membrane when an MBR membrane frame is in place and installed.

In order to achieve the purpose of the utility model, the utility model is realized by the following technical scheme:

A pulse aerator mounted on an MBR membrane holder, comprising:

The bottom of the outer shell is of an open structure, one end of the outer shell is provided with an air inlet for connecting an air source, the other end of the outer shell is provided with a fixing piece for being connected with the MBR membrane frame, and the top of the outer shell is provided with a plurality of exhaust holes for exhausting air;

The top cover is positioned at the top of the outer shell, and a plurality of release holes for dispersing and discharging the gas along different directions are formed in the position, corresponding to the discharge holes, of the top cover;

The air inlet groove is positioned at the bottom of the outer shell and extends along the length direction of the outer shell, one end of the air inlet groove is provided with an inlet communicated with the air inlet, the other end of the air inlet groove is connected with the fixing piece, an air collection chamber is formed between the two side walls of the air inlet groove and the two side walls of the outer shell, and the two side walls of the air inlet groove are respectively provided with a plurality of air inlet distribution holes;

The siphon bowl is positioned in the gas collection chamber and extends downwards from the top of the outer shell, an exhaust pipe is sleeved in the siphon bowl, the upper end of the exhaust pipe is communicated with the exhaust hole, the lower end of the siphon bowl is opened, and the position of the lower end of the siphon bowl is higher than the position of the upper end of the gas inlet groove.

The pulse aerator is arranged on the MBR membrane frame. The pulse aerator comprises an outer shell with an open bottom, and an air inlet used for connecting an air source is arranged at one end of the outer shell. The other end of the outer shell is provided with a fixing piece used for being connected with the MBR membrane frame. The top of the outer shell is provided with a plurality of exhaust holes for exhausting gas. The top of the outer shell is provided with a top cover. The top cover is provided with a plurality of release holes which are used for dispersing and discharging the gas along different directions at positions corresponding to the discharge holes. The pulse aerator further comprises an air inlet groove. The air inlet groove is positioned at the bottom of the outer shell and extends along the length direction of the outer shell. One end of the air inlet groove is provided with an inlet communicated with the air inlet, and the other end of the air inlet groove is connected with the fixing piece. And a gas collection chamber is formed between the two side walls of the gas inlet groove and the two side walls of the outer shell. Two side walls of the air inlet groove are respectively provided with a plurality of air inlet distribution holes. The pulse aerator further includes a siphon bowl located inside the plenum and extending downward from the top of the outer housing. The siphon bowl is sleeved with an exhaust pipe, and the upper end of the exhaust pipe is communicated with the exhaust hole. The lower end of the siphon bowl is opened, and the position of the lower end of the siphon bowl is higher than the position of the upper end of the air inlet groove.

By temporarily storing the gas in the gas collection chamber until the pressure in the gas collection chamber reaches the siphon breaking point, the gas is instantaneously dispersed and discharged in different directions through the discharge hole and the release hole. Compared with the common perforated pipe aeration mode, the gas collection type pulse aeration technology is adopted, so that the aeration release amount is obviously increased, and the membrane wire strength is improved during aeration scrubbing, and the aeration release is promoted to be more uniform. In addition, the intermittent aeration is performed by adopting a gas collection type pulse aeration mode, the intermittent time is shorter, and the shorter the intermittent time is along with the larger aeration release amount, the aeration efficiency and the membrane silk aeration scrubbing effect are improved. In addition, the outer shell with the bottom in an open structure and the air inlet groove are adopted, so that sludge aggregation and accumulation in the air inlet groove can be effectively prevented, the blocking of an aeration pipeline is effectively avoided, the air inflow is further reduced while the strength and the effect of aeration scrubbing membrane wires are ensured, and the energy consumption is reduced.

Preferably, a plurality of air outlet holes are further formed in the two side walls of the outer shell, and the air outlet holes are uniformly or unevenly distributed.

Through setting up the venthole, promote the dwell time of gas in sewage to shorten, help improving gas transfer efficiency. In addition, when the exhaust pipe is polluted and blocked, the gas can be discharged from the gas outlet holes, so that aeration is maintained, and the stable operation of the MBR system is further ensured.

Preferably, the air outlet holes are arranged corresponding to the air inlet distribution holes.

Through the arrangement, the gas can be uniformly distributed in the air inlet groove, so that the gas and the liquid are better mixed, the mass transfer efficiency between the gas and the liquid is improved, and the wastewater treatment efficiency is further improved. In addition, through reasonable arrangement of the positions of the air inlet distribution holes and the air outlet holes, the air is uniformly discharged from the air inlet distribution holes on the air inlet groove and enters the air collection chamber. When the exhaust pipe is polluted and blocked, the gas can be uniformly released from the gas outlet holes, so that the gas is effectively prevented from being concentrated in a local area, and the energy consumption is further reduced.

Preferably, a plurality of clapboards are arranged above the air inlet groove at intervals, two sides of each clapboard are fixedly connected with two side walls of the outer shell respectively, and the upper ends of the clapboards are connected with the top of the outer shell.

Through setting up a plurality of baffles, divide into a plurality of gas collecting units with the gas collection chamber, help increasing the contact time of bubble and liquid, further improve the mass transfer efficiency between bubble and the liquid to the membrane silk effect is cleaned in the reinforcing aeration. Meanwhile, the partition plate can effectively prevent bubbles from being accumulated on one side or other local areas in the gas collection chamber, so that uniform distribution of the bubbles is realized. Further improving the aeration effect and maintaining the stable operation of the MBR system.

As a further preferable aspect, the intake air distribution holes on both side walls of the intake air tank are located at a position lower than the lower end of the partition plate.

Through the arrangement, the gas can enter each gas collecting unit from the gas inlet distribution holes on the two side walls of the gas inlet groove, and the gas is uniformly distributed, so that the aeration uniformity is ensured, and the aeration effect is further improved.

As a further preferable mode, the bottom of the air inlet groove is in an open structure.

As a further preferable aspect, the side wall of the air inlet groove has a thin wall structure.

Through the arrangement, when the air inlet groove stops air inlet, mud water at the bottom of the tank enters the air inlet groove, and after a period of standing, the mud water starts to precipitate and moves downwards under the action of gravity. Because the bottom of the air inlet groove is of an open structure, the sludge can only flow out of the air inlet groove, is difficult to accumulate in the air inlet groove, and cannot form granular sludge. Meanwhile, when the sludge is precipitated, the sludge at the air inlet distribution holes on the air inlet grooves may fall to the lower edges of the air inlet distribution holes, but the sludge is very easy to slide off on the side walls of the air inlet grooves due to the thin-wall structure of the side walls of the air inlet grooves, so that granular sludge is difficult to form. Thereby effectively avoiding the blocking of the aeration pipeline by sludge and further improving the strength and the aeration effect of the aeration scrubbing membrane wires.

Preferably, the partition plate includes a clamping portion clamped with the top of the air inlet groove.

Through the arrangement, the baffle plate and the top of the air inlet groove are firmly clamped.

Preferably, a plurality of reinforcing ribs are fixedly connected to the inner side wall of the outer shell and positioned on two sides of the partition plate respectively.

Through the arrangement, the strength and the connection stability of the partition plate and the outer shell are improved, so that the partition plate is not easy to deform or damage when bearing larger pressure or impact.

Preferably, a plurality of reinforcing ribs are arranged in the air inlet groove at intervals, and two ends of each reinforcing rib are respectively connected with two side walls of the air inlet groove.

Through above-mentioned setting, help increasing the intensity of air inlet tank and improve structural stability, avoid taking place to warp because of pressure or sewage impact, damage.

An MBR component device comprises a plurality of pulse aerators arranged on an MBR membrane frame and a suspension component arranged on the top of the MBR membrane frame.

According to the utility model, the suspension assembly is arranged at the top of the MBR membrane frame, so that the whole MBR membrane frame is suspended and hung on the upper part of the water tank, and a large amount of sludge is effectively prevented from accumulating on membrane wires. Meanwhile, the sludge attached to the membrane wires is driven to fall off and sink under the action of flushing and gravity of the gas collection type pulse aeration mode, so that the conditions of fouling, pollution and the like of the membrane are further relieved, and the stable operation of the MBR system is ensured.

Preferably, the suspension assembly comprises suspension beams arranged above the MBR membrane rack, and the number of the suspension beams is at least two.

As a further preference, the number of suspension beams is four.

By the arrangement, the load of a single suspension beam is reduced, so that the stability and the bearing capacity of the whole suspension assembly are improved. Meanwhile, at least two suspension cross beams are arranged, so that the pulse aeration device can be maintained or replaced conveniently. The hanging cross beam is only required to be taken down from the support beam prefabricated in advance above the pool top, so that the maintenance or replacement cost is effectively reduced, and the maintenance time is shortened.

Preferably, a water producing pipe is arranged at the center of the bottom of the MBR membrane frame, a lifting hook for lifting the MBR membrane frame is arranged above the water producing pipe, an aeration pipe is longitudinally arranged on the side face of the MBR membrane frame, an aeration port is arranged at the upper end of the aeration pipe, and the lower end of the aeration pipe is communicated with the air inlet.

Through the arrangement, the MBR membrane frame is lifted by the lifting hook, so that the hanging cross beam above the MBR membrane frame is conveniently taken down from the support beam prefabricated in advance above the pool top, the operation is simple and convenient, and the follow-up installation, maintenance or replacement is facilitated. Meanwhile, the water producing pipe is arranged at the center of the bottom of the MBR membrane frame, so that the stability of the MBR membrane frame in the running process is improved, and shaking or tilting caused by uneven weight distribution is avoided. In addition, the setting of aeration pipe, aeration mouth and air inlet helps improving the aeration effect, and then further improves gas transmission efficiency and microorganism degradation effect.

Therefore, the utility model has the following beneficial effects:

(1) According to the utility model, the gas is stored in the gas collection chamber for a short time until the pressure in the gas collection chamber reaches the siphon breaking point, and the gas is instantaneously dispersed and discharged in different directions through the discharge hole and the release hole. Compared with the common perforated pipe aeration mode, the gas collection type pulse aeration technology is adopted, so that the aeration release amount is obviously increased, and the membrane wire strength is improved while the aeration release is promoted to be more uniform;

(2) The utility model adopts the gas collection type pulse aeration mode to carry out intermittent aeration, the intermittent time is shorter, and the intermittent time is shorter along with the larger aeration release amount, thereby being beneficial to improving the aeration efficiency and the aeration membrane filament scrubbing effect;

(3) The utility model adopts the outer shell with the bottom in an open structure and the air inlet tank, can effectively prevent sludge from gathering and accumulating in the air inlet tank, thereby effectively avoiding the blockage of an aeration pipeline, further reducing the air inflow and reducing the energy consumption while ensuring the strength and the effect of aeration scrubbing membrane wires;

(4) According to the utility model, the suspension assembly is arranged at the top of the MBR membrane frame, so that the whole MBR membrane frame is suspended and hung on the upper part of the pool, a large amount of sludge is effectively prevented from being accumulated on membrane wires, the conditions of membrane fouling, pollution and the like are further relieved, and the stable operation of an MBR system is ensured.

Drawings

Fig. 1 is a schematic perspective view of a pulse aerator.

Fig. 2 is a schematic structural view of the outer case.

Fig. 3 is a schematic structural view of the top cover.

Fig. 4 is a schematic structural view of an air intake groove.

Fig. 5 is a schematic view of the internal structure of the outer case.

Fig. 6 is a schematic sectional structure of a pulse aerator.

Fig. 7 is a schematic structural diagram of an MBR assembly device.

In the figure: an MBR membrane frame 1; an outer case 2; an air inlet 3; a fixing member 4; a discharge hole 5; a top cover 6; a release hole 7; an air intake groove 8; an inlet port 9; a plenum 10; intake distribution holes 11; a siphon bowl 12; an exhaust pipe 13; an air outlet hole 14; a partition 15; a clamping part 16; a reinforcing rib 17; a reinforcing rib 18; a suspension assembly 19; a suspension beam 20; a water producing pipe 21; a lifting hook 22; an aerator pipe 23; an aeration port 24; a pulse aerator 25; an MBR component apparatus 26.

Detailed Description

The utility model is further described below with reference to the drawings and specific examples. Those of ordinary skill in the art will be able to implement the utility model based on these descriptions. In addition, the embodiments of the present utility model referred to in the following description are typically only some, but not all, embodiments of the present utility model. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

Example 1

In this embodiment, a pulse aerator is provided.

As shown in fig. 1 to 6, the pulse aerator 25 of the present utility model is installed on the MBR membrane holder 1. The pulse aerator 25 comprises an outer shell 2 with an open bottom, and one end of the outer shell 2 is provided with an air inlet 3 for connecting an air source. The other end of the outer housing 2 is provided with a fixing member 4 for connection with the MBR membrane frame 1. The top of the outer housing 2 is provided with a number of exhaust holes 5 for the exhaust of gas. The top of the outer housing 2 is provided with a top cover 6. The top cover 6 is provided with a plurality of release holes 7 for dispersing and discharging the gas in different directions at positions corresponding to the discharge holes 5. The pulse aerator 25 further comprises an air inlet channel 8. The air inlet groove 8 is located at the bottom of the outer casing 2 and extends along the length direction of the outer casing 2. One end of the air inlet groove 8 is provided with an inlet 9 communicated with the air inlet 3, and the other end of the air inlet groove 8 is connected with the fixing piece 4. A gas collection chamber 10 is formed between the two side walls of the gas inlet groove 8 and the two side walls of the outer shell 2. The two side walls of the air inlet groove 8 are respectively provided with a plurality of air inlet distribution holes 11. The pulse aerator 25 also includes a siphon bowl 12, the siphon bowl 12 being located inside the plenum 10 and extending downwardly from the top of the outer housing 2. An exhaust pipe 13 is sleeved in the siphon bowl 12, and the upper end of the exhaust pipe 13 is communicated with the exhaust hole 5. The lower end of the siphon bowl 12 is opened, and the position of the lower end of the siphon bowl 12 is higher than the position of the upper end of the air inlet groove 8.

By temporarily storing the gas in the gas collection chamber 10 until the pressure in the gas collection chamber 10 reaches the siphon breaking point, the gas is instantaneously dispersed and discharged in different directions through the discharge hole 5 and the release hole 7. Compared with the common perforated pipe aeration mode, the gas collection type pulse aeration technology is adopted, so that the aeration release amount is obviously increased, and the membrane wire strength is improved during aeration scrubbing, and the aeration release is promoted to be more uniform. At the same time, the provision of the plenum 10 may direct air bubbles into the plenum 10, helping to reduce the direct impact of the air bubbles on the membrane, thereby protecting the integrity of the membrane. The time for the bubbles to contact with pollutants in water can be increased, and the pollutant removal efficiency is improved. And longer residence time is also beneficial to the aggregation and lift-off of bubbles and is beneficial to improving the aeration effect. In addition, the structural stability of the whole device is improved, the device is suitable for any application scene, and the influence of the placement position of the device is avoided.

In addition, the intermittent aeration is performed by adopting a gas collection type pulse aeration mode, the intermittent time is shorter, and the shorter the intermittent time is along with the larger aeration release amount, the aeration efficiency and the membrane silk aeration scrubbing effect are improved. In addition, the adoption bottom is shell body 2 and the air inlet tank 8 of open structure, can effectively prevent mud gathering, pile up in air inlet tank 8 to effectively avoid aeration pipe 23 way to block up, further reduce the air input when guaranteeing aeration scrubbing membrane silk intensity and effect, reduce the energy consumption.

As an implementation manner, a plurality of air outlet holes 14 are further arranged on two side walls of the outer shell 2, and the air outlet holes 14 are uniformly or unevenly distributed.

By providing the air outlet holes 14, the residence time of the gas in the sewage is shortened, which is helpful for improving the gas transfer efficiency. In addition, when the exhaust pipe 13 is polluted and blocked, the gas can be discharged from the gas outlet hole 14, so that aeration is maintained, and the stable operation of the MBR system is further ensured.

As one embodiment, the air outlet holes 14 are provided corresponding to the air inlet distribution holes 11.

Through the arrangement, the gas can be uniformly distributed in the air inlet groove 8, so that the gas and the liquid are better mixed, the mass transfer efficiency between the gas and the liquid is improved, and the wastewater treatment efficiency is further improved. In addition, by reasonably positioning the positions of the inlet distribution holes 11 and the outlet holes 14, uniform discharge of gas from the inlet distribution holes 11 on the inlet channel 8 and into the plenum 10 is achieved. When the exhaust pipe 13 is polluted and blocked, the gas can be uniformly released from the gas outlet holes 14, so that the gas is effectively prevented from being concentrated in a local area, and the energy consumption is further reduced.

As an embodiment, a plurality of partition plates 15 are provided above the air intake duct 8 at intervals. Two sides of the partition plate 15 are fixedly connected with two side walls of the outer shell 2 respectively, and the upper end of the partition plate 15 is connected with the top of the outer shell 2.

By arranging the plurality of partition plates 15, the gas collection chamber 10 is divided into a plurality of gas collection units, so that the contact time of bubbles and liquid is prolonged, the mass transfer efficiency between the bubbles and the liquid is further improved, and the effect of aeration scrubbing of membrane wires is enhanced. At the same time, the baffle 15 may effectively prevent air bubbles from collecting on one side or other localized areas within the plenum 10, thereby achieving uniform distribution of air bubbles. Further improving the aeration effect and maintaining the stable operation of the MBR system.

As another embodiment, the intake air distribution holes 11 on both side walls of the intake air tank 8 are located lower than the lower end of the partition 15.

Through the arrangement, the gas can enter each gas collecting unit from the gas inlet distribution holes 11 on the two side walls of the gas inlet groove 8, and the gas is uniformly distributed, so that the aeration uniformity is ensured, and the aeration effect is further improved.

As another embodiment, the bottom of the air inlet groove 8 has an open structure.

As another embodiment, the side wall of the air intake groove 8 has a thin-walled structure.

Through the arrangement, when the air inlet groove 8 stops air inlet, mud water at the bottom of the tank enters the air inlet groove 8, and after a period of standing, the mud water starts to precipitate and moves downwards under the action of gravity. Because the bottom of the air inlet groove 8 is of an open structure, the sludge can only flow out of the air inlet groove 8, is difficult to accumulate in the air inlet groove 8, and cannot form granular sludge. Meanwhile, when the sludge is precipitated, the sludge at the air inlet distribution holes 11 on the air inlet tank 8 may fall to the lower edge of the air inlet distribution holes 11, but the sludge is very easy to slide on the side wall of the air inlet tank 8 due to the thin wall structure of the side wall of the air inlet tank 8, so that granular sludge is difficult to form. Thereby effectively avoiding the blocking of the 23 paths of the aeration pipes by sludge and further improving the strength of aeration scrubbing membrane wires and the aeration effect.

As one embodiment, the partition 15 includes a locking portion 16 that is locked to the top of the air intake duct 8.

Through the arrangement, the baffle 15 is firmly clamped with the top of the air inlet groove 8.

As an embodiment, a plurality of reinforcing ribs 17 are fixedly connected to the inner side wall of the outer casing 2 and positioned on both sides of the partition plate 15.

By the above arrangement, the strength and the connection stability of the partition plate 15 and the outer case 2 are improved, so that the partition plate is not easily deformed or damaged when being subjected to a large pressure or impact.

As an embodiment, a plurality of reinforcing ribs 18 are arranged in the air inlet groove 8 at intervals, and two ends of each reinforcing rib 18 are respectively connected with two side walls of the air inlet groove 8.

Through the arrangement, the strength of the air inlet groove 8 is increased, the structural stability is improved, and deformation and damage caused by pressure or sewage impact are avoided.

Example 2

In this embodiment, an MBR assembly apparatus is provided.

As shown in fig. 7, an MBR assembly device 26 includes a plurality of pulse aerators 25 as described above mounted on the MBR membrane frame 1, and further includes a hanging assembly 19 provided on the top of the MBR membrane frame 1.

According to the utility model, the suspension assembly 19 is arranged at the top of the MBR membrane frame 1, so that the whole MBR membrane frame 1 is suspended and hung at the upper part of a pool, and a large amount of sludge is effectively prevented from accumulating on membrane wires. Meanwhile, the sludge attached to the membrane wires is driven to fall off and sink under the action of flushing and gravity of the gas collection type pulse aeration mode, so that the conditions of fouling, pollution and the like of the membrane are further relieved, and the stable operation of the MBR system is ensured.

As an embodiment, the suspension assembly 19 comprises suspension beams 20 arranged above the MBR membrane rack 1, the number of suspension beams 20 being at least two.

As another embodiment, the number of suspension beams 20 is four.

By the above arrangement, it is facilitated to reduce the load of the individual suspension beams 20, thereby improving the stability and load carrying capacity of the whole suspension assembly 19. At the same time, by providing at least two suspension beams 20, subsequent maintenance or replacement of the pulse aeration device 26 is facilitated. The hanging beam 20 is only required to be taken down from the support beam prefabricated in advance above the pool top, so that the maintenance or replacement cost is effectively reduced and the maintenance time is shortened.

As an embodiment, a water producing pipe 21 is provided at a bottom center position of the MBR membrane frame 1, and a lifting hook 22 for lifting the MBR membrane frame 1 is provided above the water producing pipe 21. An aeration pipe 23 is longitudinally arranged on the side surface of the MBR membrane frame 1, an aeration opening 2424 is arranged at the upper end of the aeration pipe 23, and the lower end of the aeration pipe 23 is communicated with the air inlet 3.

Through the arrangement, the MBR membrane frame 1 is lifted by the lifting hooks 22, so that the hanging cross beam 20 above the MBR membrane frame 1 is conveniently taken down from the support beam prefabricated in advance above the pool top, the operation is simple and convenient, and the follow-up installation, maintenance or replacement is facilitated. Meanwhile, the water producing pipe 21 is arranged at the bottom center position of the MBR membrane frame 1 (the other end of the water producing pipe 21 is connected with a water pump for pumping and conveying), so that stability of the MBR membrane frame 1 in the running process is improved, and shaking or tilting caused by uneven weight distribution is avoided. In addition, the provision of the aeration pipe 23, the aeration port 2424 and the air inlet 3 contributes to the improvement of the aeration effect, and in turn, further improves the gas transmission efficiency and the microbial degradation effect.

The pulse aerator 25 and the MBR assembly device 26 are used as follows:

And installing a prefabricated supporting beam above the pool top. The pulse aerator 25 is mounted on the bottom of the MBR membrane frame 1 and the hanging assembly 19 is mounted on the top of the MBR membrane frame 1. The assembled MBR assembly device 26 is suspended on the support beam by the suspension cross beam 20 and the MBR membrane rack 1 is horizontally aligned. Thereby promoting the whole MBR membrane frame 1 to hang on the upper part of the pool in a suspended way, and effectively avoiding a large amount of sludge from accumulating on membrane wires. Meanwhile, the sludge attached to the membrane wires is driven to fall off and sink under the action of flushing and gravity of the gas collection type pulse aeration mode, so that the conditions of fouling, pollution and the like of the membrane are further relieved, and the stable operation of the MBR system is ensured. When the MBR component device 26 is maintained or replaced later, the MBR membrane frame 1 is lifted by the lifting hook 22, and the hanging cross beam 20 above the MBR membrane frame 1 is taken down from the supporting beam, so that the operation is simple and convenient.

Before the gas is not introduced, the inside of the outer case 2 and the air inlet groove 8 is filled with water. When the gas is input, the gas enters the aeration pipe 23 through the aeration opening 2424, and the lower end of the aeration pipe 23 is communicated with the gas inlet 3 on the outer housing 2 in the pulse aerator 25. So that gas enters from the gas inlet 3 into an inlet port 9 provided at one end of the gas inlet channel 8 in communication with the gas inlet 3. The gas continuously enters the air inlet groove 8 with an open bottom through the inlet opening 9 of the air inlet groove 8, and then enters the gas collection chamber 10 through the air inlet distribution holes 11 on the two side walls of the air inlet groove 8. As gas is continuously input and temporarily stored in the gas collection chamber 10, the liquid level in the gas collection chamber 10 is pressed downwards, and when the liquid level is pressed to the position of the water seal opening of the exhaust pipe 13 in the siphon bowl 12, the gas in the gas collection chamber 10 is instantaneously released in the form of large bubbles. The released bubbles enter from the lower end of the siphon bowl 12, and when the bubbles rise to the top of the outer shell 2, the bubbles start to move downwards and enter from the exhaust pipe 13 under the blocking of the top of the outer shell 2, then enter the top cover 6 through the exhaust hole 5 communicated with the upper end of the exhaust pipe 13, and finally are instantaneously dispersed and exhausted in different directions through the release holes 7 arranged on the top cover 6 at positions corresponding to the exhaust hole 5, so that uniform aeration is realized. At this time, the inside of the outer case 2 and the air intake groove 8 will be refilled with water. With the continuous input of gas, the phenomenon is repeated and repeated to form the gas-collecting pulse aeration.

In addition, when the air intake groove 8 stops air intake, muddy water at the bottom of the tank enters the air intake groove 8, and after a period of standing, the muddy water starts to precipitate and moves downwards under the action of gravity. Because the bottom of the air inlet groove 8 is of an open structure, the sludge can only flow out of the air inlet groove 8, is difficult to accumulate in the air inlet groove 8, and cannot form granular sludge. Meanwhile, when the sludge is precipitated, the sludge at the air inlet distribution holes 11 on the air inlet tank 8 may fall to the lower edge of the air inlet distribution holes 11, but the sludge is very easy to slide on the side wall of the air inlet tank 8 due to the thin wall structure of the side wall of the air inlet tank 8, so that granular sludge is difficult to form. Thereby effectively avoiding the blocking of the 23 paths of the aeration pipes by sludge and further improving the strength of aeration scrubbing membrane wires and the aeration effect.

Claims (10)

1. A pulse aerator mounted on an MBR membrane holder (1), comprising:

The device comprises an outer shell (2), wherein the bottom of the outer shell is of an open structure, an air inlet (3) for connecting an air source is formed in one end of the outer shell (2), a fixing piece (4) for connecting with an MBR membrane frame (1) is arranged at the other end of the outer shell (2), and a plurality of exhaust holes (5) for exhausting air are formed in the top of the outer shell (2);

The top cover (6) is positioned at the top of the outer shell (2), and a plurality of release holes (7) for dispersing and discharging the gas in different directions are arranged on the top cover (6) at positions corresponding to the discharge holes (5);

The air inlet groove (8) is positioned at the bottom of the outer shell (2) and extends along the length direction of the outer shell (2), an inlet (9) communicated with the air inlet (3) is formed at one end of the air inlet groove (8), the other end of the air inlet groove (8) is connected with the fixing piece (4), an air collection chamber (10) is formed between two side walls of the air inlet groove (8) and two side walls of the outer shell (2), and a plurality of air inlet distribution holes (11) are respectively formed in the two side walls of the air inlet groove (8);

The siphon bowl (12) is located inside the gas collection chamber (10) and extends downwards from the top of the outer shell (2), an exhaust pipe (13) is sleeved in the siphon bowl (12), the upper end of the exhaust pipe (13) is communicated with the exhaust hole (5), the lower end of the siphon bowl (12) is opened, and the position of the lower end of the siphon bowl (12) is higher than the position of the upper end of the air inlet groove (8).

2. A pulse aerator as defined in claim 1, wherein a plurality of air outlet holes (14) are further arranged on two side walls of the outer casing (2), and the air outlet holes (14) are uniformly or unevenly distributed.

3. A pulse aerator as defined in claim 2, wherein said air outlet holes (14) are provided in correspondence with the air inlet distribution holes (11).

4. The pulse aerator according to claim 1, wherein a plurality of partition boards (15) are arranged above the air inlet groove (8) at intervals, two sides of each partition board (15) are fixedly connected with two side walls of the outer shell (2) respectively, and the upper end of each partition board (15) is connected with the top of the outer shell (2).

5. A pulse aerator as defined in claim 4, characterized in that said partition (15) comprises a clamping portion (16) to be clamped with the top of the air inlet tank (8).

6. A pulse aerator as defined in claim 4, wherein a plurality of reinforcing ribs (17) are fixedly connected to the inner side wall of the outer casing (2) and positioned on both sides of the partition plate (15).

7. A pulse aerator as defined in claim 1 or 4, wherein a plurality of reinforcing ribs (18) are arranged in the air inlet groove (8) at intervals, and two ends of the reinforcing ribs (18) are respectively connected with two side walls of the air inlet groove (8).

8. An MBR assembly device, characterized by comprising a plurality of pulse aerators according to any one of claims 1-7 mounted on an MBR membrane frame (1), and further comprising a hanging assembly (19) arranged on the top of the MBR membrane frame (1).

9. An MBR assembly arrangement according to claim 8, wherein the suspension assembly (19) comprises suspension beams (20) arranged above the MBR membrane rack (1), the number of suspension beams (20) being at least two.

10. The MBR assembly device of claim 8, wherein a water producing pipe (21) is arranged at the bottom center position of the MBR membrane frame (1), a lifting hook (22) for lifting the MBR membrane frame (1) is arranged above the water producing pipe (21), an aeration pipe (23) is longitudinally arranged on the side surface of the MBR membrane frame (1), an aeration port (24) is arranged at the upper end of the aeration pipe (23), and the lower end of the aeration pipe (23) is communicated with the air inlet (3).