Pulse aerator and membrane module based on gas supply communication

Abstract

The present disclosure relates to environmental water treatment, and provides a pulse aerator based on air supply communication and a membrane group device. The pulse aerator comprises a shell forming a containing space with an open bottom, a top forming an air inlet and a plurality of air outlets communicating with the containing space; a partition structure arranged in the containing space, forming an air supply cavity with a gap between the inner wall of the shell and enclosing a plurality of aeration cavities; the aeration cavities are arranged in pairs with the air outlets; a plurality of air passage assemblies are formed at a predetermined height position of the partition structure, respectively communicating the air supply cavity with each aeration cavity; the air passage assembly comprises at least one air passage notch formed at the bottom end of the partition structure; at least one air hole part formed on the wall surface of the partition structure; the position of the air hole part is higher than that of the air passage notch. The air hole part with adjustable position is used to preferentially ventilate the air supply cavity and the aeration cavity, and the air passage notch is used as a backup ventilation when the air hole part is blocked, which takes into account the setting and reliability of the ventilation time of the two cavities.

Description

Technical Field

[0001] This disclosure relates to the field of environmental water treatment technology, and in particular to pulse aerators and membrane modules based on air supply connection. Background Technology

[0002] Membrane bioreactor (MBR) technology is a novel and highly efficient wastewater treatment process that combines efficient membrane separation technology with the traditional activated sludge process. The MBR achieves efficient sludge-water separation through hollow fiber membranes. Simultaneously, due to its effective retention capacity, it can retain microorganisms with long generation cycles, achieving deep wastewater purification. Furthermore, nitrifying bacteria can proliferate fully within the system, resulting in significant nitrification and enabling advanced phosphorus and nitrogen removal.

[0003] In related technologies, MBRs can be used in conjunction with aerators to continuously flush membrane fibers using a two-phase flow of gas and liquid generated by aeration, thereby removing sludge adsorbed on the membrane fiber surface. Some related technologies utilize pulse aerators with a structure comprising an air supply chamber and an aeration chamber connecting the air supply chamber, such as the aerator structure in Chinese patent application CN202110000666.7. This structure connects the air supply chamber and the aeration chamber via a connecting notch located at the bottom. Therefore, when the wastewater level drops to expose the connecting notch, the air supply chamber can supply air to the aeration chamber through the connecting notch, and the height of the connecting notch determines the start time of air supply. Consequently, if the height of the connecting notch is increased to accelerate air supply, the total area of ​​the connecting notch will unnecessarily increase, potentially even affecting the internal structural strength of the aerator. Therefore, the limited height of the connecting notch restricts the adjustment of air supply time and frequency. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide a pulse aerator and membrane module based on air supply connection, so as to solve the problem that the aerator in the related art only uses a connecting notch to connect the air supply chamber and the aeration chamber.

[0005] The first aspect of this disclosure provides a pulse aerator based on air supply communication, comprising: a shell forming a receiving space with a bottom opening, and a top forming an air inlet and a plurality of air outlets communicating with the receiving space; a cavity structure disposed in the receiving space, with a gap between the cavity structure and the inner wall of the shell forming an air supply cavity and surrounding a plurality of aeration cavities; the aeration cavities and the air outlets are arranged in pairs; a plurality of ventilation components formed at a predetermined height position of the cavity structure, respectively communicating with the air supply cavity and each aeration cavity; the ventilation component includes: at least one ventilation notch formed at the bottom end of the cavity structure; at least one air hole formed on the wall of the cavity structure; the air hole is positioned higher than the ventilation notch.

[0006] In an embodiment of the first aspect, the ventilation gaps are provided in pairs between a pair of opposite sidewalls of each aeration chamber.

[0007] In an embodiment of the first aspect, there are at least two ventilation gaps, which are symmetrically distributed on a pair of opposing cavity walls adjacent to the air supply cavity relative to the central axis of the aeration cavity.

[0008] In an embodiment of the first aspect, the air vents are at least two in number and are symmetrically distributed on a pair of opposing cavity walls adjacent to the air supply cavity relative to the central axis of the aeration cavity.

[0009] In an embodiment of the first aspect, the vent portion includes a plurality of vent holes.

[0010] In the first aspect of the embodiment, the plurality of vents are at the same height; or, the plurality of vents are arranged in groups, with each group of vents at the same height; or, the plurality of vents are arranged at different heights.

[0011] In an embodiment of the first aspect, the vent portion includes a vent hole having a variable diameter section with an increasing cross-sectional area from the air supply chamber to the aeration chamber.

[0012] In an embodiment of the first aspect, the vent further includes an air inlet section with one end connected to the variable diameter section and the other end extending to the air supply chamber.

[0013] In an embodiment of the first aspect, the end of the variable diameter section facing the aeration chamber is connected to the chamber wall of the aeration chamber.

[0014] A second aspect of this disclosure provides a membrane module, characterized in that it comprises: a pulse aerator as described in any one of the first aspects, and a filter membrane located above the pulse aerator.

[0015] As described above, this disclosure relates to environmental water treatment, providing a pulse aerator and membrane module based on air supply and connection. The pulse aerator includes: a shell forming a receiving space with a bottom opening, and a top forming an air inlet and multiple air outlets communicating with the receiving space; a cavity structure disposed in the receiving space, with a gap between the cavity structure and the inner wall of the shell forming an air supply cavity, and surrounding multiple aeration chambers; the aeration chambers and air outlets are arranged in pairs; multiple ventilation components are formed at a preset height position of the cavity structure, respectively communicating with the air supply cavity and each aeration chamber; each ventilation component includes: at least one ventilation notch formed at the bottom end of the cavity structure; at least one air hole formed on the wall of the cavity structure; the air hole is positioned higher than the ventilation notch. The position-adjustable air hole prioritizes air supply to the air supply cavity and aeration chamber, while the ventilation notch can be used as backup air supply when the air hole is blocked, taking into account both the setting and reliability of the air supply time of the two chambers. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of the aerator in the embodiments of this disclosure is shown.

[0017] Figure 2 A three-dimensional structural diagram showing the separation of the pulse aeration device housing and the gas diversion component in an embodiment of this disclosure is provided.

[0018] Figure 3 This diagram illustrates a three-dimensional structure of the pulse aeration device hood from an inverted perspective, as shown in an embodiment of this disclosure.

[0019] Figure 4 This is a three-dimensional structural diagram of the pulse aeration device hood from another inverted perspective in an embodiment of this disclosure.

[0020] Figure 5 The diagram shown is a top view of the aerator in an embodiment of this disclosure.

[0021] Figure 6 exhibit Figure 5 Schematic diagram of the cross-sectional view along the EE direction.

[0022] Figure 7 It shows Figure 3 A magnified view of the structure of part H in the middle. Detailed Implementation

[0023] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0024] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0025] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0026] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0027] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0028] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0029] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0030] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0031] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0032] In related technologies, there are pulse aerators that construct an air supply chamber and an aeration chamber connecting the air supply chamber, such as the aerator structure in Chinese patent application CN202110000666.7. The air supply chamber and the aeration chamber are connected by a connecting notch located at the bottom. Therefore, when the wastewater level drops to expose the connecting notch, the air supply chamber can supply air to the aeration chamber through the connecting notch, and the height of the connecting notch determines the start time of air supply. Thus, if the height of the connecting notch is increased to accelerate air supply, the total area of ​​the connecting notch will unnecessarily increase, and may even affect the internal structural strength of the aerator. Therefore, the height of the connecting notch is limited, resulting in limitations on the adjustment of air supply time and frequency.

[0033] In view of this, the present disclosure provides a pulse aerator, which solves the problem of limited ventilation time caused by a single ventilation gap in the related art by setting a ventilation component with redundant design between the air supply chamber and the aeration chamber.

[0034] Please refer to the following: Figures 1 to 4 . Figure 1 A three-dimensional structural schematic diagram of the aerator in the embodiments of this disclosure is shown. Figure 2 A three-dimensional structural diagram showing the separation of the pulse aeration device housing and the gas diversion component in an embodiment of this disclosure is provided. Figure 3 This diagram illustrates a three-dimensional structure of the pulse aeration device hood from an inverted perspective, as shown in an embodiment of this disclosure. Figure 4 This is a three-dimensional structural diagram of the pulse aeration device hood from another inverted perspective in an embodiment of this disclosure.

[0035] The aerator 100 includes a housing 110, a cavity structure 120, and an aeration component 130.

[0036] The housing 110 forms a receiving space 1100 with a bottom opening 1101. As an example, the housing 110 includes a top wall and peripheral sidewalls adjoining the edge of the top wall, with no bottom wall forming the opening 1101. The housing 110 is exemplary implemented as a cuboid, having a length direction (X direction) and a width direction (Y direction). The shape of the housing 110 can also vary depending on the layout of the aeration chamber 1103. The top of the housing 110 forms an air inlet 111 communicating with the receiving space 1100 and a plurality of air outlets 112. In some embodiments, the air inlet 111 is located at one end along the length of the housing 110. The air inlet 111 can be connected to an air source to allow air to enter the housing 110. In some embodiments, the plurality of air outlets 112 can be linearly spaced along one extending direction of the housing 110.

[0037] Optionally, in Figure 1 and Figure 2 In this structure, each vent 112 is connected to a gas diverter 140. The gas diverter 140 is fixedly mounted on the outer top wall of the housing 110. The gas diverter 140 has a central cavity communicating with the vent 112, and diversion ports extending laterally and evenly around the central cavity. Large air bubbles discharged from the vent 112 are broken into multiple smaller air bubbles by the gas diverter 140 and output through the diversion ports. These smaller air bubbles can uniformly scrub the membrane module within its coverage area and also agitate the nearby water, achieving the agitation effect of a sludge mixing pump.

[0038] Please see Figure 3 and Figure 4 The aerator 100 includes a cavity structure 120 disposed in the receiving space 1100, forming an annular continuous air supply cavity 1102 between the aerator and the inner wall of the housing 110, and surrounding a plurality of mutually spaced aeration cavities 1103. The cavity structure 120 forms ventilation components 160 at at least two opposite sides at predetermined height positions, connecting the air supply cavity 1102 and each aeration cavity 1103. That is, through the annular continuous air supply cavity 1102 surrounding the plurality of aeration cavities 1103, communication between the aeration cavity 1103 and the air supply cavity 1102 is formed at least on both sides of each aeration cavity 1103, allowing the air supply cavity 1102 to uniformly supply air to each aeration cavity 1103.

[0039] The aeration chamber 1103 and the air outlet 112 (see...) Figure 2 (Set in pairs) Figure 2 The example shows four air vents 112. Figure 4The image shows an aeration chamber 1103 corresponding to each air outlet 112. Each aeration chamber 1103 is equipped with an aeration component 130, which connects to the corresponding air outlet 112. Optionally, the plurality of air outlets 112 can be arranged at equal intervals. Each aeration chamber 1103 can be coaxially arranged with the corresponding air outlet 112. The plurality of aeration chambers 1103 have the same dimensions, thus having the same capacity for uniform air output.

[0040] See also Figure 3 and Figure 4 The ventilation assembly 160 may include at least one ventilation notch 162 formed at the bottom end of the cavity structure 120, and at least one vent portion 161 formed on the wall surface of the cavity structure 120. As an example, the vent portion 161 may be disposed above the ventilation notch 162.

[0041] As an example, the cavity wall of each aeration chamber 1103 (i.e., the portion of the aeration chamber 1103 enclosed by the septum structure 120) can be provided with multiple ventilation openings 162, for example... Figure 3 and Figure 4 The four ventilation openings 162 shown are evenly distributed in pairs on a pair of opposing cavity walls of the aeration chamber 1103, cooperating with the annular continuous air supply chamber 1102 to uniformly introduce air into each aeration chamber 1103. Optionally, the four ventilation openings 162 can be arranged symmetrically around the central axis of the corresponding aeration chamber 1103. It is understood that in other embodiments, the number of ventilation openings 162 can vary; for example, a pair of ventilation openings 162 may be symmetrically distributed relative to the central axis of the aeration chamber 1103 on a pair of opposing cavity walls adjacent to the air supply chamber 1102. For example, in Figure 4 In this configuration, a pair of ventilation openings 162 can be arranged radially along the center of the aeration chamber 1103 on the pair of chamber walls, such as at positions A and B on the pair of chamber walls along the width direction perpendicular to the housing 110. Alternatively, they can be staggered in the width direction, such as at positions C and D on the pair of chamber walls at an angle.

[0042] In some embodiments, at least two air vents 161 are provided, symmetrically distributed relative to the central axis of the aeration chamber 1103 on a pair of opposing chamber walls adjacent to the air supply chamber 1102. Figure 3 and Figure 4The diagram shows a pair of air vents 161, offset in width and symmetrically arranged on the walls of the pair of chambers relative to the central axis of the aeration chambers 1103, to cooperate with the annular continuous air supply chambers 1102 to uniformly ventilate each aeration chamber 1103. It is understood that in other embodiments, even if the air supply chambers 1102 do not completely surround each aeration chamber 1103, the structure of the air vents 161 being symmetrically distributed relative to the central axis of the aeration chambers 1103 can still be used if the air supply chambers 1102 uniformly supply air from both sides of the aeration chambers 1103.

[0043] The vent portion 161 may include at least one vent 1611. Optionally, the vent portion 161 may include multiple vents 1611, such as the two vents 1611 shown in the figure. The multiple vents 1611 may be located at the same height. In other examples, the multiple vents 1611 may be grouped, with each group of vents 1611 having the same height, for example, four vents 1611, two at height 'a', and the other two at height 'b' which is greater than 'a'. In still other examples, the multiple vents 1611 may be set at different heights. For example, two vents 1611, one at height 'a', and the other at height 'b' which is greater than 'a'; if there are three vents 1611, the height of the third vent 1611 may be 'c' which is greater than 'a' and 'b', 'd' which is between 'a' and 'b', or 'e' which is less than 'a', etc. By using vents 1611 at different heights, the air supply can gradually increase as the water level decreases. Furthermore, the lower-height vents 1611 can serve as redundancy for the higher-height vents 1611, thus increasing reliability.

[0044] The size and number of vent holes 1611 in each vent section 161 are related to the air supply volume from the air supply chamber 1102 to the aeration chamber 1103. Since the aerator 100 is placed in the wastewater to be treated, if the vent holes 1611 are too small, they are easily blocked by sludge; if the vent holes 1611 are too large or too numerous, they can easily cause gas fluctuations. Therefore, the appropriate size and number of vent holes 1611 can be selected according to the required air supply effect.

[0045] In other embodiments, the number of vent portions 161 and the number of vent holes 1611 included can also vary. In one example, there may be four vent portions 161, located one-to-one in... Figure 2 and Figure 4 Above each ventilation opening 162, each vent portion 161 may include only one ventilation hole 1611, which is consistent with... Figure 2 and Figure 4 In the embodiment, four ventilation gaps 162 are used in conjunction with four ventilation holes 1611 for ventilation. The ventilation volume is similar, but the structure can be different, and the uniformity may be better.

[0046] Optionally, in Figure 7 In the middle, for Figure 3 A magnified view of the structure of part H in the middle. Figure 7 The vent 1611 in the vent section 161 may have a variable diameter section 16111 with an increasing cross-sectional area from the air supply chamber 1102 to the aeration chamber 1103. As an example, the end of the vent 1611 facing the aeration chamber 1103 may be chamfered to form the variable diameter section 16111. The end of the variable diameter section facing the aeration chamber may be connected to the chamber wall of the aeration chamber. Because the air pressure in the vent section 161 is relatively low, it is not easy to flush away the accumulated material inside the vent. Therefore, when the water / airflow flows from the air supply chamber 1102 to the aeration chamber 1103, it can obtain more movement space through the variable diameter section 16111 after passing through the vent 1611, thereby effectively preventing debris from accumulating in the vent 1611. For example, it can effectively prevent fibrous debris or even aquatic parasites (such as red nematodes) from getting stuck in the vent 1611, thus improving the reliability of the aerator. In addition, the vent 1611 also includes an air inlet section 16112. One end of the air inlet section 16112 communicates with the variable diameter section 16111, and the other end extends to the wall of the air supply chamber. As an example, the air inlet section 16112 can be a straight pipe section. In other embodiments, the air inlet section 16112 can also have a structure with an increasing cross-sectional area from the air supply chamber 1102 to the aeration chamber 1103, but the change in cross-sectional area of ​​the air inlet section 16112 can be smaller than that of the variable diameter section 16111.

[0047] In addition, the ventilation assembly 160 includes a higher-positioned air vent 161 and a lower-positioned ventilation notch 162. According to the aeration principle of the pulse aerator, gas introduced into the air inlet 111 flows downwards into the air supply chamber 1102, lowering the water level in the air supply chamber 1102 so that the gas first connects to the higher-positioned air vent 161. Therefore, the ventilation unit is preferentially used to supply air from the air supply chamber 1102 to the aeration chamber 1103. When the air vent 161 is blocked and cannot supply air, the water level can be further lowered to connect the gas and the ventilation notch 162, still allowing air supply from the air supply chamber 1102 to the aeration chamber 1103. That is, the ventilation notch 162 serves as a backup for the air vent 161 to supply air from the air supply chamber 1102 to the aeration chamber 1103, achieving a "main-backup" redundant air supply design, which can effectively improve the reliability of the aerator 100.

[0048] It is understood that although the above embodiments show the application of the aeration component 160 to a pulse aerator 100 having a continuous annular air supply chamber 1102 surrounding the aeration chamber 1103, in other embodiments, the aeration component 160 may also be applied to aerators with non-annular air supply chambers 1102, such as the aerator in CN202110000666.7, and is not limited to the illustrations in this disclosure.

[0049] It should be noted that, since each aeration chamber 1103 is equipped with a corresponding ventilation component 160, therefore Figure 3 and Figure 4 Only some parts are marked, not all of them. In other embodiments, the plurality of air outlets 112 and aeration chambers 1103 may not be arranged in a straight line, but may be arranged in an array such as a square, ring, or circle, and are not limited to the structure in this embodiment.

[0050] like Figure 4 As shown, multiple aeration components 130 are respectively disposed in each of the aeration chambers 1103, for connecting the paired aeration chambers 1103 and the air outlets 112. For example... Figure 5 and Figure 6 The structure of the aeration component 130 is described in detail below. Figure 5 The diagram shown is a top view of the aerator 100 in an embodiment of this disclosure. Figure 6 exhibit Figure 5 Schematic diagram of the cross-sectional view along the EE direction.

[0051] like Figure 6 As shown, the aeration assembly 130 includes an air outlet pipe 131 and an air collection hood 132. One end of the air outlet pipe 131 is connected to the inner top wall of the housing 110 and communicates with the air outlet 112, while the other end, away from the inner top wall of the housing 110, has an air inlet 1311. The air collection hood 132 is fitted upwards around the air outlet pipe 131, with its upper end maintaining a gap with the inner top wall of the housing 110 to form an air collection port 1321, and its lower end has a discharge port 1322. The discharge port 1322 is used to allow sludge sedimentation in the air collection chamber 1323 of the air collection hood 132 to be discharged from the discharge port 1322 into the aeration chamber 1103.

[0052] Referring to the airflow arrows in the diagram, the working principle of the aerator 100 is explained. Gas is introduced through the air inlet 111 and flows downwards into the air supply chamber 1102. As the gas enters and rises in the air supply chamber 1102, it forces water out from the bottom of the shell 110, lowering the water level in the air supply chamber 1102. When the water level drops to expose the air vent 161, the air supply chamber 1102 connects to the aeration chamber 1103 through the air ventilation unit to supply air to the aeration chamber 1103. Similarly, as gas is continuously introduced into the aeration chamber 1103, the water level in the aeration chamber 1103 decreases. Since the air collection hood 132 is connected to the aeration chamber 1103 through the air collection port 1321, the water level also decreases until the water level drops to expose the air inlet 1311 at the bottom of the air collection hood 132. Gas can enter the air collection hood 132 through the air collection port 1321 and then enter the air outlet pipe 131 through the air inlet 1311 to be discharged through the air outlet 112, so that it can be diverted and output by the gas diverter 140 to form aeration. After aeration is formed, the sewage in the aeration chamber 1103 rises and refills the aeration chamber 1103. Subsequently, by continuously filling the air collection chamber 1323 of the air collection hood 132 with air, the aerator 100 will continuously repeat the above aeration process. Thus, the aerator 100 will form an intermittent aeration. To facilitate the sewage being forced out of the air supply chamber 1102 and the aeration chamber 1103, it can be as follows... Figure 4 As shown in the figure, the housing 110 may also be provided with overflow grooves 1104 for water to overflow at the bottom of the two inner side walls.

[0053] exist Figure 6 In this process, the vent pipe 131 can be integrally formed with the housing 110, or the vent pipe 131 can be fixedly connected to the inner top wall of the housing 110 by means of snap-fit, heat fusion or other methods.

[0054] like Figure 6 As can be seen, the air outlet pipe 131 is a pipe with a straight central axis that is coaxial with the air outlet 112, and the air collection hood 132 is a hood that is coaxial with the air outlet pipe 131 and extends in a straight line.

[0055] Alternatively, in other optional embodiments, the gas collecting hood 132 and the gas outlet pipe 131 may be eccentrically positioned along one extension direction of the housing 110, i.e., their central axes are not collinear. Alternatively, the gas outlet pipe 131 and the gas outlet hole 112 may be eccentrically positioned along the width direction of the housing 110. Alternatively, the gas outlet pipe 131 and the gas outlet hole 112 may be eccentrically positioned along both the length and width directions of the housing 110. The gas outlet pipe 131 is more conducive to breaking the instantaneous balance of pulse aeration, making pulse aeration easier to occur and more uniform, unaffected by environmental factors.

[0056] In summary, this disclosure relates to environmental water treatment, providing a pulse aerator and membrane module based on air supply and connection. The pulse aerator includes: a shell forming a receiving space with a bottom opening, and an air inlet and multiple air outlets forming an air inlet communicating with the receiving space at the top; a cavity structure disposed in the receiving space, with a gap between the cavity structure and the inner wall of the shell forming an air supply cavity, and surrounding multiple aeration chambers; the aeration chambers and air outlets are arranged in pairs; multiple ventilation components are formed at a preset height position of the cavity structure, respectively communicating with the air supply cavity and each aeration chamber; each ventilation component includes: at least one ventilation notch formed at the bottom end of the cavity structure; at least one vent portion formed on the wall of the cavity structure; the vent portion is positioned higher than the ventilation notch. The position-adjustable vent portion prioritizes air supply to the air supply cavity and aeration chamber, while the ventilation notch can be used as backup air supply when the vent portion is blocked, taking into account both the setting of the air supply time and reliability of the two chambers.

[0057] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A pulse aerator based on air supply connection, characterized in that, include: The housing forms a receiving space with an opening at the bottom, and an air inlet and multiple air outlets at the top that communicate with the receiving space; A cavity structure is provided in the accommodating space, and the gap between the cavity structure and the inner wall of the shell forms an air supply cavity, which in turn surrounds multiple aeration cavities. The aeration chamber and the air outlet are arranged in pairs; Multiple ventilation components are formed at a preset height position of the cavity structure, and are respectively connected to the air supply chamber and each aeration chamber; The ventilation component includes: at least one ventilation notch formed at the bottom end of the cavity structure; at least one vent portion formed on the wall of the cavity structure; the vent portion is positioned higher than the ventilation notch.

2. The pulse aerator according to claim 1, characterized in that, Each aeration chamber has a pair of ventilation gaps between its opposite sidewalls.

3. The pulse aerator according to claim 1, characterized in that, There are at least two ventilation gaps, which are symmetrically distributed on a pair of opposing cavity walls adjacent to the air supply cavity relative to the central axis of the aeration cavity.

4. The pulse aerator according to claim 2, characterized in that, The air vents are at least two in number and are symmetrically distributed on a pair of opposing cavity walls adjacent to the air supply cavity, relative to the central axis of the aeration cavity.

5. The pulse aerator according to claim 1, characterized in that, The vent section includes multiple vent holes.

6. The pulse aerator according to claim 5, characterized in that, The plurality of vents are at the same height; or, the plurality of vents are arranged in groups, with each group of vents at the same height; or, the plurality of vents are arranged at different heights.

7. The pulse aerator according to claim 5, characterized in that, The venting section includes a variable diameter section with an increasing cross-sectional area from the air supply chamber to the aeration chamber.

8. The pulse aerator according to claim 7, characterized in that, The vent further includes an air inlet section, one end of which is connected to the variable diameter section and the other end of which extends to the air supply chamber.

9. The pulse aerator according to claim 7, characterized in that, The end of the variable diameter section facing the aeration chamber is connected to the wall of the aeration chamber.

10. A membrane module, characterized in that, include: The pulse aerator and the filter membrane located above the pulse aerator as described in any one of claims 1 to 9.

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