Membrane bioreactor based on distributed vibration

Abstract

The present invention discloses a membrane bioreactor based on distributed vibration, which relates to the technical field of membrane bioreactors. It is based on the operating principle of the membrane reactor, and forms the operating processes of multiple membrane reactor bodies into an integral structure. In the overall process, the liquid level change of sewage inside the tank body is used to directly feedback the processing capacity of the membrane reactor body in each independent position. Its essence is to establish a water level analysis system, specifically by real-time collection of sewage level parameters in the three stages of the front section, the middle section and the cross-linking section for analysis, and to feedback the processing capacity of the membrane reactor body by the sewage change speed. On this basis, a working component is added to the overall structure. Its essence is to utilize the above-mentioned processing capacity to enable each membrane reactor body to adopt a cyclic and continuous replacement process. The sewage treatment process will not be interrupted in the overall process, nor will it directly affect the overall sewage treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of membrane bioreactors, in particular to a membrane bioreactor based on distributed vibration. Background Art

[0002] The membrane bioreactor system in sewage treatment is a sewage treatment system composed of ultrafiltration and microfiltration membrane components in membrane separation technology and bioreactors in sewage biological treatment engineering. For details, please refer to the relevant content mentioned in publication number CN101565232A.

[0003] It should be noted that the membrane reactor system is built in a membrane pool with several membrane reactors, and water flows through the membrane reactors one by one. The conventional method is to adopt the form of "one to N", so its operation mode is "all start once started, all stop once stopped". It should also be noted that the workload of the single membrane reactor that first contacts the water flow is the highest, and its membrane separation effect decreases the fastest. When the membrane reactor at this position needs to be cleaned, it will directly affect the operation effect of the entire system, and the process of reinstalling the membrane reactor is very time-consuming, and the sewage treatment effect is reduced. Specifically, the overall treatment system needs to be temporarily interrupted during the cleaning or reinstallation of the membrane reactor.

[0004] This application proposes a solution to this problem. Summary of the Invention

[0005] The purpose of the present invention is to provide a membrane bioreactor based on distributed vibration. For the current membrane bioreactor system, because its sewage treatment process is coordinated with the continuous fluidity of sewage, the single membrane reactor that first contacts the sewage has the highest workload, and the subsequent cleaning, reinstallation and other processes will further affect the sewage treatment effect.

[0006] The object of the present invention can be achieved by the following technical solution: a membrane bioreactor based on distributed vibration, comprising a tank body and a membrane reactor body, wherein the membrane reactor body is linearly equidistantly arranged inside the tank body along the length direction of the tank body, and the interior of the tank body is divided into a plurality of buffer chambers by the membrane reactor body;

[0007] The tank body is provided with a connecting pipe corresponding to the buffer tank, the connecting pipe is arranged in a vertical direction and a liquid level sensor is installed at the top position of the connecting pipe. The membrane reactor body is provided with a straight connecting block along the width direction of the tank body, and the tank body is provided with a working component corresponding to the straight connecting block.

[0008] A control assembly module associated with a liquid level sensor and a working component is provided on the outside of the tank body. The control assembly module performs status analysis and action determination on each membrane reactor body according to the liquid level value in the liquid level sensor.

[0009] It is further configured that: the bottom end of the connecting pipe is communicated with the interior of the buffer bin, and the top end of the connecting pipe is higher than the height of the membrane reactor body.

[0010] It is further configured as follows: the working component includes a transmission track, a working roller shaft and a drive assembly; the working roller shaft is rotatably connected to the outer walls on both sides of the trough body along its width direction, and the working roller shaft is linearly equidistantly arranged along the length direction of the trough body; the transmission track is arranged on each working roller shaft; and the output shaft of the drive assembly is fixedly connected to the center point of one of the working roller shafts.

[0011] It is further configured as follows: the upper surface position of the transmission crawler and the upper surface position of the trough body are on the same horizontal plane, and a cooperating bayonet corresponding to the straight connecting block is opened on the outer curved surface of the transmission crawler, and a card block corresponding to the cooperating bayonet is installed on the lower side of the straight connecting block.

[0012] It is further configured as follows: a water level analysis system is established with a control assembly module, the water level analysis system is composed of a data integration unit, an independent stage analysis unit, and a cross-link analysis unit. The data integration unit is used to record the liquid level value in each liquid level sensor, the water injection volume per unit time of sewage, and the water discharge volume per unit time of water production, which are expressed as Hi, Qt, and Ct respectively;

[0013] The independent stage analysis unit and the cross-linking analysis unit perform water level status analysis based on Hi, Qt and Ct in the data integration unit to obtain the status capacity of the membrane reactor body, and number the membrane reactor body inside the tank body as 1, 2, 3...i along the flow direction of the sewage. In the independent stage analysis unit, the initial value H0 of the liquid level in the buffer tank numbered 1 can be obtained through Qt and Ct. H0=(Qt-Ct)*t / k. The liquid level value in each buffer tank is expressed as H1, H2, H3...Hi;

[0014] In the cross-link analysis unit, the liquid level value in the liquid level sensor is used to calculate the rate of increase of the sewage level in the corresponding buffer tank, HV i =(Hi t -Hi t-n ) / n, where HV i It is used to indicate the rate of increase of sewage water level, and integrates the sewage liquid level value in the buffer tank and the rate of increase of sewage water level to judge the state capacity of the membrane reactor body.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention is directed to the operating principle of the membrane reactor body, and the operating processes of multiple membrane reactor bodies are formed into an overall structure. Based on the filtering capacity of the membrane reactor body, the overall structure uses the sewage level change in the buffer bin between two adjacent membrane reactor bodies to directly feedback the processing capacity of the membrane reactor body in each independent position. More specifically, by establishing a water level analysis system, the state capacity of the membrane reactor body is judged by the sewage level value in the buffer bin and the rate of increase of the sewage water level. In the process of replacing the membrane reactor body, a cyclic and continuous replacement process is adopted. The overall process only has two actions of taking out and re-inserting, which takes a short time. The overall process will not interrupt the sewage treatment process and will not directly affect the overall sewage treatment effect.

[0017] 2. In combination with the above-mentioned water level analysis system, it is necessary to explain again that: first, the membrane reactor bodies carried are numbered along the flow direction of sewage, based on the membrane reactor bodies that preferentially contact the sewage, and the overall process is divided into three stages: the front section, the middle section and the cross-linking section. Based on the sewage level parameters in the three stages, it specifically includes independent stage analysis and cross-linking analysis processes, with the aim of maintaining the normal operation of the overall system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of the membrane bioreactor based on distributed vibration proposed in the present invention;

[0020] Figure 2 The membrane bioreactor based on distributed vibration proposed by the present invention Figure 1 sectional view of

[0021] Figure 3 The membrane bioreactor based on distributed vibration proposed by the present invention Figure 2 Front view of

[0022] Figure 4 This is a partial cross-sectional view of the tank body in the membrane bioreactor based on distributed vibration proposed by the present invention.

[0023] In the figure: 1. Tank body; 101. Buffer bin; 2. Membrane reactor body; 3. Liquid level sensor; 4. Straight connection block; 5. Control assembly module; 6. Drive assembly; 7. Cooperative bayonet; 8. Transmission track; 9. Working roller shaft. DETAILED DESCRIPTION

[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1: For the current membrane bioreactor system, because its sewage treatment process is coordinated with the continuous flow of sewage, the workload of the single membrane reactor that first contacts the sewage is the highest, and the subsequent cleaning and reinstallation processes will further affect the sewage treatment effect. In this regard, this embodiment proposes the following technical solutions:

[0026] Reference Figures 1 to 4 The membrane bioreactor based on distributed vibration in this embodiment includes a tank body 1 and a membrane reactor body 2. The membrane reactor body 2 is linearly and equidistantly arranged inside the tank body 1 along the length direction of the tank body 1, and the interior of the tank body 1 is divided into a plurality of buffer chambers 101 by the membrane reactor body 2.

[0027] A connecting pipe corresponding to the buffer bin 101 is installed on the outside of the tank body 1. The connecting pipe is arranged in a vertical direction and a liquid level sensor 3 is installed at the top position. A straight connecting block 4 is installed on the membrane reactor body 2 along the width direction of the tank body 1. A working component corresponding to the straight connecting block 4 is installed on the tank body 1.

[0028] The outer position of the tank body 1 is provided with a control assembly module 5 associated with a liquid level sensor 3 and a working component. The control assembly module 5 performs state analysis and action determination on each membrane reactor body 2 based on the liquid level value in the liquid level sensor 3;

[0029] The bottom end of the connecting pipe is connected to the interior of the buffer tank 101 , and the top end of the connecting pipe is higher than the height of the membrane reactor body 2 .

[0030] Working principle: A brief description of the membrane reactor is that it is essentially a filtration structure. Figure 3 For example, when sewage continues to flow along the right side of the tank body 1, after being filtered by each membrane reactor body 2 during the flow process, the treated water is finally obtained at the leftmost position of the tank body 1. Therefore, it can be understood that the leftmost position of the tank body 1 is the water outlet end, and the rightmost position of the tank body 1 is the water injection end, and the power of the sewage injection process is used to promote the water flow;

[0031] However, it needs to be further explained that: since the membrane reactor body 2 is essentially a filtering structure, its processing performance is significantly reduced during continuous operation, and it even has no filtering ability. For this reason, the present invention divides the interior of the tank body 1 into multiple buffer bins 101 through the setting position of the membrane reactor body 2. In essence, each membrane reactor body 2 has water permeability, so it can be indirectly understood that each buffer bin 101 is connected. However, when the membrane reactor body 2 at a certain position is contaminated with too many impurities, the water permeability is reduced or even lost, thereby limiting the flow process of sewage in the tank body 1. Specifically, the sewage retained in the buffer bin 101 at the membrane reactor body 2 with reduced or even lost water permeability cannot continue to flow, resulting in its liquid level height continuing to rise. Specifically, the liquid level change is sensed by the liquid level sensor 3, and a state analysis and judgment action is performed according to the liquid level change. Finally, the membrane reactor body 2 with reduced or even lost water permeability is removed and cleaned by a crane and other structures. This part is the basic principle of the present invention.

[0032] Example 2: Explanation of the replacement process of each membrane reactor in the tank body:

[0033] The working components include a transmission track 8, a working roller shaft 9 and a drive assembly 6. The working roller shaft 9 is rotatably connected to the outer walls of the trough body 1 on both sides along its width direction, and the working roller shaft 9 is linearly equidistantly arranged along the length direction of the trough body 1. The transmission track 8 is arranged on each working roller shaft 9. The output shaft of the drive assembly 6 is fixedly connected to the center point of one of the working roller shafts 9. The upper surface position of the transmission track 8 and the upper surface position of the trough body 1 are on the same horizontal plane, and a cooperating bayonet 7 corresponding to the straight connecting block 4 is opened on the outer curved surface of the transmission track 8, and a card block corresponding to the cooperating bayonet 7 is installed on the lower side of the straight connecting block 4.

[0034] Solution description: In combination with the technical content in Example 1, it is necessary to explain again: if the membrane reactor body 2 at a certain position is removed, the volume of the buffer bin 101 at that position increases, which directly affects the sewage flow rate, and then indirectly affects the overall sewage treatment effect. Therefore, in this embodiment, a working component is proposed for the relevant content in Example 1. Its essence is: each membrane reactor body 2 is installed inside the tank body 1 one by one through a structure such as a crane, specifically by the block on the straight connecting block 4 being matched with the cooperative bayonet 7 position on the transmission crawler 8;

[0035] And again with Figure 2For example, if the sewage flows from right to left, the membrane reactor body 2 at the far right position will be in contact with the sewage first, so the "work load" of each membrane reactor body 2 gradually decreases from right to left. In theory, the membrane reactor body 2 at the far right position is "more likely" to be completely blocked by impurities and lose its water permeability. Then, the sewage in the buffer tank 101 at the far right position will have difficulty flowing into the next buffer tank 101, and the amount of sewage inside it will continue to increase.

[0036] To this end, it is necessary to replace the membrane reactor body 2 at the rightmost position. To be more specific, it does not mean direct replacement, but replacement of the setting position of the membrane reactor body 2. Its essence is: when the membrane reactor body 2 at the rightmost position is taken out, the transmission crawler 8 is driven by the driving assembly 6 to rotate clockwise, thereby driving the membrane reactor body 2 in the remaining position to move a distance from left to right under the cooperation of the cooperative bayonet 7, and the distance moved is equal to the length of the membrane reactor body 2. To be more specific, multiple membrane reactor bodies 2 and each are moved from right to left. The corresponding buffer bins 101 are numbered in sequence: 1, 2, 3...i, where i is a natural number. When each membrane reactor body 2 is replaced, because the membrane reactor body 2 with number 1 is taken out, and the membrane reactor bodies 2 in the remaining positions continue to move to the right, it can be understood that the membrane reactor body 2 with number 2 is "upgraded" to number 1, and the cleaned or new membrane reactor body 2 is placed in the leftmost position. What is explained in this process is that the sewage still keeps flowing during the whole process, and the whole replacement process only has two actions of taking out and putting in again, and the time is relatively short. Example

[0037] The control assembly module in the first embodiment is explained in conjunction with the second embodiment:

[0038] Based on the operating principle of the membrane reactor body 2, if each membrane reactor body 2 is in a brand new state and is continuously flowing with pure water, then the liquid level change in each buffer bin 101 is in a relatively constant or non-significant fluctuation state. However, when sewage continues to flow through each membrane reactor body 2, impurities in the sewage continue to adhere to each membrane reactor body 2, causing the liquid level change in the buffer bin 101 at the rightmost position to show a significant increase. After that, each membrane reactor body 1 will still filter the sewage, so that the liquid level changes in the remaining positions will also show a significant increase. However, the difference is that the liquid level change in the buffer bin 101 numbered 1 is the largest.

[0039] For this purpose, a water level analysis system is established with the control assembly module. Its essence is composed of a data integration unit, an independent stage analysis unit, and a cross-link analysis unit. The data integration unit is used to record the liquid level value of each liquid level sensor 3, the water injection volume per unit time of sewage, and the water discharge volume per unit time of water production, and they are expressed as Hi, Qt, and Ct respectively;

[0040] The independent stage analysis unit and the cross-linking analysis unit perform water level state analysis based on Hi, Qt and Ct in the data integration unit, and obtain the state capacity of the membrane reactor body 2 at the corresponding position from the water level state analysis. In this process, because the volume of each buffer bin 101 in the tank body 1 is the same, the initial value H0 of the liquid level in the buffer bin 101 numbered 1 can be obtained first through Qt and Ct. Its essence is H0=(Qt-Ct)*t / k, where k is a constant factor of the volume of the associated buffer bin 101. If Qt is greater than Ct, the initial value of the liquid level in the buffer bin 101 numbered 1 is positive, otherwise it is negative. This part will not be explained in detail.

[0041] Combined with the relevant description in the second embodiment again, the liquid level value in each buffer bin 101 can be obtained, specifically expressed as H1, H2, H3...Hi, and it is obvious that H1>H2>H3>Hi. The water level peak value Ha of the single membrane reactor body 2 is directly set in the data integration unit. This part mainly represents the front section of the overall structure.

[0042] Therefore, in the cross-link analysis unit, if H1>Ha, it directly indicates that the membrane reactor body 2 of number 1 is in a state of loss of processing capacity. This part is the most basic judgment method, and in the independent stage analysis section, the liquid level value in the liquid level sensor 3 is used to calculate the rising speed of the sewage water level in the corresponding buffer tank 101, which is specifically expressed as HV i =(Hi t -Hi t-n ) / n, where HV i Used to indicate the rate of increase of sewage water level;

[0043] The cross-linking analysis unit is based on the independent stage analysis unit. Specifically, the calculation process in the independent stage analysis unit is used as the main method to calculate the peak water level height and the sewage water level increase rate of each subsequent buffer bin 101. This part corresponds to the median section in the overall structure. In theory, since the membrane reactor body 2 of No. 1 always contacts the sewage first, the workload of each subsequent membrane reactor body 2 is relatively low, which can be understood as the subsequent Hi<Ha, but the HV t There are obvious differences, specifically in HV i and HV i-1To express the state capacity of the membrane reactor body i, because the flow inside the tank 1 is sewage, the calculation method H0=(Qt-Ct)*t / k is no longer applicable. The liquid level value of the buffer tank 101 numbered 1 is only related to the water injection volume of the sewage per unit time and the state capacity of the membrane reactor body 2 numbered 1, Qt*t / k-MhV=H1, where the value of Qt*t / k-MhV represents the liquid level value in the buffer tank 101 numbered 1, where MhV is mainly used to represent the water permeability of the membrane reactor body 2 numbered 1, and the water permeability is used to represent the state capacity of the membrane reactor body 2. Therefore, when MhV=0, the sewage water level in the buffer tank 101 numbered 1 continues to increase, but when MhV is not equal to 0, a part of the sewage in the buffer tank 101 numbered 1 penetrates into the buffer tank 101 numbered 2. Similarly, the sewage water levels in the buffer tanks 101 numbered 2 and 3 can be used to judge the state capacity of the membrane reactor body 2 numbered 2. By analogy, H can be obtained. i -1-MhV i -1=H i The conversion method is used to generate the upper limit value A of the sewage water level increase rate in each buffer tank 101 when combining multiple membrane reactor bodies 2, and the following judgment method is generated again:

[0044] S1: When H1<Ha, but HV 1 If it is greater than or equal to A, it still means that the processing capacity of the membrane reactor body 2 of No. 1 has been lost, and the membrane reactor body 2 of No. 1 needs to be directly replaced;

[0045] S2: When H1<Ha, and HV 1 If it is less than A, in theory, each subsequent membrane reactor body 2 will still maintain a relatively good state. However, because the impurity content in the sewage is different, it may affect the membrane reactor body 2 in a certain position. In this process, Hi and Ha are judged first. When Hi<Ha, HV needs to be further calculated. i However, because the sewage level in the buffer tank 101 of number i changes, it is determined by the membrane reactor body of number i and the membrane reactor body 1 before number i-1. Similarly, when HV i If it is greater than or equal to A, it directly indicates that the membrane reactor body 2 with the number i-1 is in a state of losing its processing capacity, and as shown in the first embodiment, the membrane reactor body 2 with the number i-1 is directly replaced.

[0046] In summary: Based on the operating principle of the membrane reactor, the operating processes of multiple membrane reactor bodies are formed into an overall structure. In the overall process, the liquid level changes of the sewage inside the tank are used to directly feedback the processing capacity of the membrane reactor body in each independent position. Its essence is to establish a water level analysis system, specifically by collecting the sewage level parameters in the three stages of the front section, the middle section and the cross-linking section in real time for analysis, and to use the sewage change rate to feedback the processing capacity of the membrane reactor body. On this basis, working components are added to the overall structure. Its essence is to use the above-mentioned processing capacity to make each membrane reactor body adopt a cyclic and continuous replacement process. In the overall process, the sewage treatment process will not be interrupted, nor will it directly affect the overall sewage treatment effect.

[0047] The above contents are merely examples and explanations of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

[0048] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A membrane bioreactor based on distributed vibration, comprising a tank body (1) and a membrane reactor body (2), characterized in that: The membrane reactor body (2) is linearly and equidistantly arranged inside the tank body (1) along the length direction of the tank body (1), and the inside of the tank body (1) is divided into a plurality of buffer bins (101) by the membrane reactor body (2); A connecting pipe corresponding to the buffer bin (101) is installed on the outside of the tank body (1), the connecting pipe is arranged in a vertical direction and a liquid level sensor (3) is installed at the top position of the connecting pipe, a straight connecting block (4) is installed on the membrane reactor body (2) along the width direction of the tank body (1), and a working component corresponding to the straight connecting block (4) is installed on the tank body (1); The tank body (1) is provided with an associated liquid level sensor (3) and a control assembly module (5) of a working component at an external position. The control assembly module (5) performs a state analysis and action determination on each membrane reactor body (2) based on the liquid level value in the liquid level sensor (3); The working assembly comprises a transmission crawler (8), a working roller shaft (9) and a drive assembly (6), wherein the working roller shaft (9) is rotatably connected to the outer wall positions on both sides of the trough body (1) along the width direction thereof, and the working roller shafts (9) are linearly and equidistantly arranged along the length direction of the trough body (1), the transmission crawler (8) is arranged on each working roller shaft (9), and the output shaft of the drive assembly (6) is fixedly connected to the center point of one of the working roller shafts (9); A water level analysis system is established with the control assembly module. The water level analysis system consists of a data integration unit, an independent stage analysis unit, and a cross-link analysis unit. The data integration unit is used to record the liquid level value of each liquid level sensor (3), the water injection volume per unit time of sewage, and the water discharge volume per unit time of water production, which are expressed as Hi, Qt, and Ct respectively; The independent stage analysis unit and the cross-linking analysis unit perform water level state analysis based on Hi, Qt and Ct in the data integration unit to obtain the state capacity of the membrane reactor body (2), and number the membrane reactor body (2) inside the tank body (1) as 1, 2, 3...i along the flow direction of the sewage. In the independent stage analysis unit, the initial value H0 of the liquid level in the buffer bin (101) numbered 1 can be obtained through Qt and Ct. H0=(Qt-Ct)*t / k. The liquid level value in each buffer bin (101) is expressed as H1, H2, H3...Hi, k is a constant factor of the volume of the associated buffer bin (101), and t is expressed as time; In the cross-link analysis unit, the liquid level value in the liquid level sensor (3) is used to calculate the rising speed of the sewage water level in the corresponding buffer tank (101), HV i =(Hi t -Hi t-n ) / n, where HV i It is used to indicate the rate of increase of the sewage water level, and integrates the sewage liquid level value in the buffer tank (101) and the rate of increase of the sewage water level to judge the state capacity of the membrane reactor body (2).

2. The membrane bioreactor based on distributed vibration according to claim 1, characterized in that: The bottom end of the connecting pipe is in communication with the interior of the buffer bin (101), and the top end of the connecting pipe is higher than the height of the membrane reactor body (2).

3. The membrane bioreactor based on distributed vibration according to claim 1, characterized in that The upper surface of the transmission crawler (8) and the upper surface of the trough (1) are on the same horizontal plane, and a cooperating bayonet (7) corresponding to the straight connecting block (4) is provided on the outer curved surface of the transmission crawler (8), and a card block corresponding to the cooperating bayonet (7) is installed on the lower side of the straight connecting block (4).

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