Membrane bioreactor based on distributed vibration

Abstract

The invention discloses a membrane bioreactor based on distributed vibration, relates to the technical field of membrane bioreactors, and is characterized in that operation processes of a plurality of membrane reactor bodies form an integral structure based on an operation principle of the membrane reactor. In the whole process, the treatment capacity of the membrane reactor body in each independent position is directly fed back according to the liquid level change of sewage in the tank body, and the essence is that a water level analysis system is established, and specifically, the sewage liquid level parameters in the front-position section, the middle-position section and the cross-linking section are acquired in real time for analysis; the treatment capacity of the membrane reactor body is fed back based on the change speed of sewage, on this basis, the working assembly is additionally arranged in the whole structure, the essence is that the treatment capacity is utilized, each membrane reactor body adopts a circulating continuous replacement process, the sewage treatment process is not interrupted in the whole process, and the sewage treatment efficiency is improved. And the whole sewage treatment effect is not directly influenced.

Description

Technical Field

[0001] The invention relates to the technical field of membrane bioreactors, and 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 "one to N" form, and the 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 overall 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 in the subsequent cleaning, reinstallation and other processes, it will further affect the sewage treatment effect.

[0006] The object of the present invention can be achieved by the following technical scheme: 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 inside of the tank body is divided into a plurality of buffer bins by the membrane reactor body;

[0007] A connecting pipe corresponding to the buffer bin is installed on the outside of the tank body, the connecting pipe is arranged in a vertical direction and a liquid level sensor is installed at the top position thereof, a straight connecting block is installed on the membrane reactor body along the width direction of the tank body, and a working component corresponding to the straight connecting block is installed on the tank body;

[0008] A control assembly module associated with a liquid level sensor and a working component is arranged on the outside of the tank body. The control assembly module performs state 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 inside 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 of 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 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 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 respectively expressed as Hi, Qt, and Ct;

[0013] The independent stage analysis unit and the cross-link 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, 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 Ho of the liquid level in the buffer bin numbered 1 can be obtained through Qt and Ct, Ho = (Qt-Ct)*t / k, and the liquid level value in each buffer bin 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 aimed at the operating principle of the membrane reactor body, and the operating processes of multiple membrane reactor bodies are formed into an integral structure. Based on the filtering capacity of the membrane reactor body, the change of the sewage level in the buffer bin between the membrane reactor bodies at two adjacent positions is used in the overall structure 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 putting back, which is time-consuming. 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 sewage flow direction, 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a membrane bioreactor based on distributed vibration proposed by 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 A 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 crawler; 9. working roller shaft. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1: 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 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 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;

[0027] A connecting pipe corresponding to the buffer bin 101 is installed outside 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 thereof, a straight connecting block 4 is installed along the width direction of the tank body 1 on the membrane reactor body 2, and a working component corresponding to the straight connecting block 4 is installed on the tank body 1;

[0028] 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 according to the liquid level value in the liquid level sensor 3.

[0029] The bottom end of the connecting pipe is connected to the inside of the buffer bin 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 the 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, 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: because the membrane reactor body 2 is essentially a filtering structure, its treatment performance is significantly reduced during continuous operation, and it even has no filtering ability. In this regard, 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 has too many impurities attached to it, the water permeability is reduced or even has no water permeability, thereby limiting the flow process of sewage in the tank body 1, which is specifically manifested as follows:

[0032] The sewage retained in the buffer bin 101 at the membrane reactor body 2 whose water permeability is reduced or even lost cannot continue to flow, causing its liquid level height to continue 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 whose water permeability is reduced or even lost is taken out and cleaned by a crane and other structures. This part is the basic principle of the present invention.

[0033] Example 2: Explanation of the replacement process of each membrane reactor in the tank body:

[0034] The working components include a transmission crawler 8, a working roller shaft 9 and a driving 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 shafts 9 are linearly 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 driving assembly 6 is fixedly connected to the center point of one of the working roller shafts 9. The upper surface position of the transmission crawler 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 crawler 8, and a card block corresponding to the cooperating bayonet 7 is installed on the lower side of the straight connecting block 4.

[0035] Solution description: In combination with the technical content in the first embodiment, it is necessary to explain again: if the membrane reactor body 2 at a certain position is taken out, the volume of the buffer bin 101 at that position increases, which directly affects the sewage flow rate, and will also indirectly affect the overall sewage treatment effect. Therefore, in this embodiment, a working component is proposed for the relevant content in the first embodiment. Its essence is: each membrane reactor body 2 is successively installed inside the tank body 1 through a structure such as a crane, specifically, the block on the straight connecting block 4 is matched to the position of the cooperative bayonet 7 on the transmission crawler 8;

[0036] And again with Figure 2For example, if the flow direction of sewage is from right to left, the membrane reactor body 2 at the rightmost position will be in contact with the sewage first, so that the "work burden" of each membrane reactor body 2 gradually decreases from right to left. In theory, the membrane reactor body 2 at the rightmost position is "more likely" to be completely blocked by impurities and lose its water permeability. Then, the sewage in the buffer bin 101 at the rightmost position is difficult to continue to flow into the next buffer bin 101, so that the amount of sewage inside it continues to increase.

[0037] For this purpose, the membrane reactor body 2 at the rightmost position needs to be replaced. More specifically, it does not mean direct replacement, but replacing the setting position of the membrane reactor body 2. Its essence is that 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, so that under the cooperation of the cooperative bayonet 7, the membrane reactor body 2 in the remaining position is driven to move a distance from left to right, and the distance moved is equal to the length of the membrane reactor body 2. More specifically,

[0038] Multiple membrane reactor bodies 2 and each corresponding buffer bin 101 are numbered in sequence from right to left as follows: 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. This process is explained as follows: the sewage still keeps flowing during the overall process, and the overall replacement process only has two actions of taking out and putting in again, and the time is relatively short.

[0039] Embodiment 3: The control assembly module in Embodiment 1 is explained in combination with Embodiment 2:

[0040] Based on the operating principle of the membrane reactor body 2, if each membrane reactor body 2 is in a brand new state and continues to flow through in the state of pure water, then the liquid level change in each buffer bin 101 is in a relatively constant state or has no obvious fluctuations. 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, resulting in a significant increase in the liquid level change in the buffer bin 101 at the rightmost position, and then each membrane reactor body 1 will still filter the sewage, so that the liquid level change in the remaining positions will also show a significant increase, but the difference is that the liquid level change in the buffer bin 101 No. 1 is the largest;

[0041] For this purpose, a water level analysis system is established with a control assembly module, which is essentially 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 3, the water injection volume per unit time of sewage, and the water discharge volume per unit time of water production, and are expressed as Hi, Qt, and Ct respectively;

[0042] The independent stage analysis unit and the cross-link 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 in 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 Ho of the liquid level in the buffer bin 101 numbered 1 can be obtained by Qt and Ct. Its essence is Ho = (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.

[0043] Combined with the relevant description in the second embodiment again, the liquid level value in each buffer bin 101 can be obtained, which is specifically expressed as H1, H2, H3...Hi, and it is obviously presented as H1>H2>H3>Hi. The water level height peak Ha of a single membrane reactor body 2 is directly set in the data integration unit. This part mainly represents the front segment in the overall structure;

[0044] Therefore, in the cross-link analysis unit, if H1>Ha, it directly indicates that the membrane reactor body 2 of No. 1 is in a state of losing 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 increase rate 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;

[0045] The cross-linking analysis unit is based on the independent stage analysis unit. Specifically, the water level peak value and sewage water level increase rate of each subsequent buffer bin 101 are calculated based on the calculation process in the independent stage analysis unit. This part corresponds to the median section in the overall structure. In theory, because the membrane reactor body 2 with the number 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:

[0046] HV i and HV i-1To represent the state capacity in the membrane reactor body i of number i, because the flow inside the tank body 1 is sewage, the calculation method of Ho = (Qt-Ct)*t / k is no longer applicable, and the liquid level value of the buffer tank 101 of number 1 is only related to the water injection volume of sewage per unit time and the state capacity of the membrane reactor body 2 of number 1, Qt*t / k-MhV = H1, where the value of Qt*t / k-MhV represents the liquid level value in the buffer tank 101 of number 1, and MhV is mainly used to represent the water permeability of the membrane reactor body 2 of number 1, and the water permeability is used to represent the state capacity of the membrane reactor body 2;

[0047] When MhV=0, the sewage level in the buffer bin 101 of No. 1 continues to increase. However, when MhV is not equal to 0, part of the sewage in the buffer bin 101 of No. 1 penetrates into the buffer bin 101 of No. 2. Similarly, the sewage levels in the buffer bins 101 of No. 2 and No. 3 can be used to judge the state capacity of the membrane reactor body 2 of No. 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 bin 101 when combining multiple membrane reactor bodies 2, and the following judgment method is generated again:

[0048] S1: When H1<Ha, but HV 1 If it is greater than or equal to A, it still indicates 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;

[0049] 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 the subsequent process. In this process, Hi and Ha are judged first. When Hi<Ha, HV needs to be further calculated. i However, the sewage level in the buffer tank 101 is determined by the membrane reactor body 1 and the membrane reactor body 1 before the number i-1. i If it is greater than or equal to A, it also directly indicates that the membrane reactor body 2 with 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 number i-1 is directly replaced.

[0050] 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, to collect 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 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 during the overall process, nor will it directly affect the overall sewage treatment effect.

[0051] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described 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 should all fall within the protection scope of the present invention.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. 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 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 thereof, 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); A control assembly module (5) associated with a liquid level sensor (3) and a working component is arranged at an external position of the tank body (1), and the control assembly module (5) performs a state analysis and judgment action on each membrane reactor body (2) based on the liquid level value in the liquid level sensor (3).

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 working assembly comprises a transmission crawler (8), a working roller shaft (9) and a driving assembly (6); 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 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 driving assembly (6) is fixedly connected to the center point of one of the working roller shafts (9).

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

5. The membrane bioreactor based on distributed vibration according to claim 1, characterized in that: 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-link 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 Ho of the liquid level in the buffer bin (101) numbered 1 can be obtained through Qt and Ct, Ho = (Qt-Ct)*t / k, and the liquid level value in each buffer bin (101) is expressed as H1, H2, H3...Hi; In the cross-link analysis unit, the liquid level value in the liquid level sensor (3) is used to calculate the rate of increase 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 bin (101) and the rate of increase of the sewage water level to judge the state capacity of the membrane reactor body (2).

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