An adaptive control method and system for an MBR water treatment device

Abstract

The application discloses a self-adaptive control method and system of an MBR water treatment device. The self-adaptive control method realizes self-adaptive control of the MBR water treatment device by means of active adjustment and self-adaptive adjustment, does not need the participation of an operator, and improves control precision.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an adaptive control method and system for an MBR water treatment device. Background Technology

[0002] With the expansion of urbanization, the continuous increase in population, and the increasingly stringent pollutant discharge standards for urban wastewater treatment plants, the MBR (Membrane Bio-Reactor) process, with its advantages such as stable effluent quality and small footprint, is gradually being adopted by more and more wastewater treatment plants.

[0003] However, the application of MBR technology in water plants currently also has the following problems: 1) Water plants mostly use MBR process control, and the parameter control is mostly based on fixed values ​​set according to the average influent flow rate and influent water quality. When the influent flow rate and water quality fluctuate greatly, it cannot respond in a timely and effective manner, resulting in substandard effluent. 2) The MBR process requires operators to monitor and adjust parameters in real time. However, equipment that requires personnel to set parameters and monitor in real time often relies on the experience and expertise of the personnel, resulting in slow response speed and low control accuracy, which also has a significant impact on the treatment effect. Summary of the Invention

[0004] The purpose of this invention is to provide an adaptive control method and system for an MBR water treatment device, so as to realize adaptive control of the MBR water treatment device without the need for operator intervention and improve control accuracy.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] An adaptive control method for an MBR water treatment device, the adaptive control method comprising the following steps:

[0007] When the MBR water treatment unit is started, the filter outlet solenoid valve is closed and the self-circulation solenoid valve is opened. The pH value of the wastewater in the MBR tank is adjusted by actively calculating the amount of neutralizing liquid added, so that the pH value of the wastewater in the MBR tank is within the preset pH value range. The dissolved oxygen concentration of the wastewater in the MBR tank is adjusted by actively calculating the aeration adjustment value, so that the dissolved oxygen concentration in the MBR tank is within the preset dissolved oxygen concentration range.

[0008] When the effluent conditions are met, close the self-circulating solenoid valve and open the filtered effluent solenoid valve. Adjust the pH of the wastewater in the MBR tank using an adaptive neutralizing liquid addition method to ensure the pH value is within the preset range. Adjust the dissolved oxygen concentration of the wastewater in the MBR tank using an adaptive aeration rate adjustment method to ensure the dissolved oxygen concentration is within the preset range. When the sludge concentration in the MBR tank is within the preset sludge concentration range, adjust the sludge concentration using an adaptive sludge pump speed adjustment method. When the sludge concentration is outside the preset range, adjust the sludge concentration using an active calculation method. When the water quality in the MBR tank is within the preset water quality range, adjust the effluent pump speed using an adaptive method. When the water quality is outside the preset range, adjust the effluent pump speed using an active calculation method.

[0009] Optionally, the method of actively calculating the amount of neutralizing liquid added to adjust the pH value of the wastewater in the MBR tank, so that the pH value of the wastewater in the MBR tank is within a preset pH range, specifically includes:

[0010] Obtain the pH value of the wastewater in the MBR tank as the current pH value;

[0011] The amount of neutralizing solution to be added is calculated using an acid-base neutralization operation based on the current pH value.

[0012] The neutralizing liquid is added to the MBR tank by controlling the neutralizing liquid adjustment solenoid valve group according to the amount of neutralizing liquid added. After a first preset time period after adding the neutralizing liquid, the process returns to the step "obtain the pH value of the wastewater in the MBR tank as the current pH value" until the pH value of the wastewater in the MBR tank is within the preset pH value range.

[0013] Optionally, the method of actively calculating the aeration rate adjustment value to regulate the dissolved oxygen concentration of wastewater in the MBR tank, so that the dissolved oxygen concentration in the MBR tank is within a preset dissolved oxygen concentration range, specifically includes:

[0014] Obtain the dissolved oxygen concentration of the wastewater in the MBR tank as the current value of dissolved oxygen concentration;

[0015] Calculate the aeration rate adjustment value based on the current dissolved oxygen concentration;

[0016] According to the aeration volume adjustment value, the air compressor is controlled to add air to the MBR tank. After a second preset time period after the air is added, the process returns to the step "obtain the dissolved oxygen concentration of the wastewater in the MBR tank as the current value of dissolved oxygen concentration" until the pH value of the wastewater in the MBR tank is within the preset pH value range.

[0017] Optionally, the formula for calculating the aeration volume adjustment value is:

[0018]

[0019] Where Δy% is the aeration volume adjustment value, and k1 is the coefficient used to calculate the aeration volume adjustment value.

[0020] Optionally, when the sludge concentration in the MBR tank is not within the preset sludge concentration range, the sludge concentration in the MBR tank is adjusted by actively calculating the sludge pump speed adjustment amount, specifically including:

[0021] Obtain the sludge concentration in the MBR tank as the current sludge concentration value;

[0022] Determine whether the current value of the sludge concentration is lower than the minimum sludge concentration limit, and obtain the first determination result;

[0023] If the first judgment result indicates yes, then the sludge pump is shut down, and when the water quality of the wastewater in the MBR tank does not meet the water quality standards, the process returns to the step "obtain the sludge concentration in the MBR tank as the current value of the sludge concentration" after the third preset time after shutting down the sludge pump.

[0024] If the first judgment result indicates no, then it is determined whether the current value of the sludge concentration is higher than the maximum limit of sludge concentration, and a second judgment result is obtained;

[0025] If the second judgment result indicates yes, then the sludge pump speed adjustment amount is calculated based on the current sludge concentration;

[0026] Adjust the sludge pump speed according to the sludge pump speed adjustment amount. After the fourth preset time period after the speed adjustment, return to the step "obtain the sludge concentration in the MBR tank as the current value of sludge concentration".

[0027] Optionally, the formula for calculating the sludge pump speed adjustment is:

[0028]

[0029] Where, Δn wn k1 represents the adjustment amount of the sludge pump speed, and k2 is the coefficient used to calculate the adjustment amount of the sludge pump speed.

[0030] Optionally, adjusting the sludge pump speed according to the sludge pump speed adjustment amount specifically includes:

[0031] Calculate the sum of the current speed of the sludge pump and the adjustment amount of the sludge pump speed, and use it as the adjusted sludge pump speed.

[0032] Determine whether the adjusted sludge pump speed is greater than the sludge pump's maximum speed to obtain the third judgment result;

[0033] If the third judgment result indicates yes, then control the sludge pump to rotate at the sludge pump's highest speed.

[0034] If the third judgment result indicates no, then the sludge pump is controlled to rotate at the adjusted sludge pump speed.

[0035] Optionally, when the water quality in the MBR tank is outside the preset water quality range, the pump speed is adjusted by actively calculating the pump speed. Specifically, this includes:

[0036] Obtain the water quality of the MBR tank as the current water quality value;

[0037] Determine whether the current water quality value is higher than the highest water quality setting value to obtain the fourth determination result;

[0038] If the fourth judgment result is yes, then calculate the reduction in water pump speed based on the current water quality value; reduce the rotation speed of the water pump based on the reduction in water pump speed, and after a fifth preset time period after the water pump speed is reduced, return to the step "obtain the water quality of the MBR tank as the current water quality value";

[0039] If the fourth judgment result is negative, then determine whether the current water quality value is lower than 0.5 times the minimum water quality setting value, and obtain the fifth judgment result;

[0040] If the fifth judgment result is yes, then calculate the increase in water pump speed based on the current water quality value; increase the rotation speed of the water pump based on the increase in water pump speed, and after a sixth preset time period after the water pump rotation speed is increased, return to the step "obtain the water quality of the MBR tank as the current water quality value".

[0041] Optionally, the formula for calculating the decrease in pump speed is:

[0042]

[0043] Where, Δn cs1 k3 is the coefficient used to calculate the decrease in the speed of the water pump.

[0044] The formula for calculating the increase in pump speed is:

[0045]

[0046] Where, Δn cs2 k is the increase in the speed of the water pump, and k4 is the coefficient for calculating the increase in the speed of the water pump.

[0047] An adaptive control system for an MBR water treatment unit, the adaptive control system including sensor components and a controller;

[0048] The sensor assembly is connected to the controller, and the sensor assembly includes: a first water quality self-test sensor, a second water quality self-test sensor, a pH value detector, a sludge concentration detector, and a dissolved oxygen concentration detector.

[0049] The controller is connected to the control terminals of the filter outlet solenoid valve, self-circulation solenoid valve, neutral liquid regulating solenoid valve group, air compressor, sludge pump and outlet pump of the MBR water treatment device.

[0050] The controller is used to control the MBR water treatment device using the aforementioned adaptive control method.

[0051] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0052] This invention discloses an adaptive control method and system for an MBR water treatment device. The adaptive control method includes the following steps: When the MBR water treatment device is started, the filter outlet solenoid valve is closed, the self-circulation solenoid valve is opened, and the pH value of the wastewater in the MBR tank is adjusted by actively calculating the amount of neutralizing liquid added, so that the pH value of the wastewater in the MBR tank is within a preset pH value range; the dissolved oxygen concentration of the wastewater in the MBR tank is adjusted by actively calculating the aeration adjustment value, so that the dissolved oxygen concentration in the MBR tank is within a preset dissolved oxygen concentration range; when the effluent conditions are met, the self-circulation solenoid valve is closed, the filter outlet solenoid valve is opened, and the pH value of the wastewater in the MBR tank is adjusted by adaptively adjusting the amount of neutralizing liquid added, so that the pH value of the wastewater in the MBR tank is within a preset pH value range. Within a preset pH range, the dissolved oxygen concentration of the wastewater in the MBR tank is adjusted using an adaptive aeration rate adjustment method to keep the dissolved oxygen concentration within the preset range. When the sludge concentration in the MBR tank is within a preset sludge concentration range, the sludge concentration is adjusted using an adaptive sludge pump speed adjustment method. When the sludge concentration is outside the preset range, the sludge concentration is adjusted using an active calculation method. Similarly, when the water quality in the MBR tank is within a preset range, the effluent pump speed is adjusted using an adaptive method. When the water quality is outside the preset range, the effluent pump speed is adjusted using an active calculation method. This invention combines active and adaptive regulation to achieve adaptive control of the MBR water treatment device, eliminating the need for operator intervention and improving control accuracy. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 A flowchart of the first part of an adaptive control method for an MBR water treatment device provided in an embodiment of the present invention;

[0055] Figure 2 A flowchart of the second part of an adaptive control method for an MBR water treatment device provided in an embodiment of the present invention;

[0056] Figure 3 This is a schematic diagram of the structure of the MBR water treatment device and sensor assembly provided in an embodiment of the present invention.

[0057] Figure label:

[0058] 1. Power distribution box; 2. Automatic control box; 3. Air compressor; 4. Water pump; 5. Sludge pump; 6. Filtered water solenoid valve; 7. Self-circulating solenoid valve; 8. Clean water backwash solenoid valve; 9. Membrane module filtered water solenoid valve assembly; 10. MBR tank; 11. Liquid level sensor; 12. Gas flow meter; 13. First water quality self-test sensor; 14. Water effluent detection tank; 15. Second water quality self-test sensor; 16. Sludge concentration detector; 17. MBR membrane module; 18. Liquid level valve; 19. Manifold; 20. Pressure sensor; 21. Aeration pipe; 22. Weak acid regulating solenoid valve; 23. Weak alkali regulating solenoid valve; 24. Weak acid tank; 25. Weak alkali tank. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] The purpose of this invention is to provide an adaptive control method and system for an MBR water treatment device, so as to realize adaptive control of the MBR water treatment device without the need for operator intervention and improve control accuracy.

[0061] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0062] Example 1

[0063] This invention provides an adaptive control method for an MBR water treatment device, such as... Figure 1 and Figure 2 As shown, the adaptive control method includes the following steps:

[0064] When the MBR water treatment unit is started, the filter outlet solenoid valve is closed and the self-circulation solenoid valve is opened. The pH value of the wastewater in the MBR tank is adjusted by actively calculating the amount of neutralizing liquid added, so that the pH value of the wastewater in the MBR tank is within the preset pH value range. The dissolved oxygen concentration of the wastewater in the MBR tank is adjusted by actively calculating the aeration adjustment value, so that the dissolved oxygen concentration in the MBR tank is within the preset dissolved oxygen concentration range.

[0065] When the effluent conditions are met, close the self-circulating solenoid valve and open the filtered effluent solenoid valve. Adjust the pH of the wastewater in the MBR tank using an adaptive neutralizing liquid addition method to ensure the pH value is within the preset range. Adjust the dissolved oxygen concentration of the wastewater in the MBR tank using an adaptive aeration rate adjustment method to ensure the dissolved oxygen concentration is within the preset range. When the sludge concentration in the MBR tank is within the preset sludge concentration range, adjust the sludge concentration using an adaptive sludge pump speed adjustment method. When the sludge concentration is outside the preset range, adjust the sludge concentration using an active calculation method. When the water quality in the MBR tank is within the preset water quality range, adjust the effluent pump speed using an adaptive method. When the water quality is outside the preset range, adjust the effluent pump speed using an active calculation method.

[0066] like Figure 3 As shown, the specific arrangement of the MBR water treatment device and its sensor components used in Embodiment 1 of the present invention is as follows:

[0067] The MBR water treatment unit includes: a power distribution box 1, an automatic control box 2, an air compressor 3, an effluent pump 4, a sludge pump 5, a filtered effluent solenoid valve 6, a self-circulation solenoid valve 7, a clean water backwash solenoid valve 8, a membrane module filtered effluent solenoid valve group 9, an MBR tank 10, an effluent detection tank 14, an MBR membrane module 17, a manifold 19, an aeration pipe 21, a weak acid regulating solenoid valve 22, a weak alkali regulating solenoid valve 23, a weak acid tank 24, and a weak alkali tank 25. The effluent pump 4 is located on the effluent / self-circulation / backwash pipeline, the sludge pump 5 is located on the sludge discharge pipeline, the filtered effluent solenoid valve 6 is a normally open solenoid valve, the self-circulation solenoid valve 7 is a normally closed solenoid valve, the clean water backwash solenoid valve 8 is a normally closed solenoid valve, the membrane module filtered effluent solenoid valve group 9 is a normally open solenoid valve group, the aeration pipe 21 is located inside the MBR tank 10, and the level valve 18 is located on the inlet pipeline of the MBR tank 10.

[0068] The sensor assembly includes: a liquid level sensor 11, a gas flow meter 12, a first water quality self-test sensor 13, a second water quality self-test sensor 15, a sludge concentration detector 16, a liquid level valve 18, and a pressure sensor 20. The pressure sensor 20 is installed on the downstream pipe of the manifold in the MBR tank; the liquid level sensor 11, the first water quality self-test sensor 13, and the sludge concentration detector 16 are installed inside the MBR tank 10; the second water quality self-test sensor 15 is installed inside the effluent detection tank; and the gas flow meter 12 is installed on the aeration pipe.

[0069] As a specific implementation method, such as Figure 1 and 2 As shown, the adaptive control method in Embodiment 1 of the present invention includes the following steps:

[0070] Before starting the system, close the filter outlet solenoid valve 6 and open the self-circulation solenoid valve 7 to ensure that no water is discharged if the water quality does not meet the requirements.

[0071] The current values ​​of the wastewater in the MBR tank 10, such as pH value, dissolved oxygen concentration, and sludge concentration, are obtained through the first water quality self-testing sensor 13 in the MBR tank 10.

[0072] Determine whether the pH value of the wastewater in MBR tank 10 meets the initially set pH range (i.e., the preset pH range, pH). min -PH max PH min To preset the minimum pH value, pH maxIf the preset maximum pH value is not met, an acid-base neutralization operation is performed to determine the amount of weak acid or weak base to be added (i.e., the amount of neutralizing solution added). The appropriate amount of weak acid or weak base is added to the corresponding weak acid tank 24 or weak alkali tank 25 by controlling the opening and closing time of the weak acid regulating solenoid valve 22 or the weak alkali regulating solenoid valve 23, so that the pH value of the wastewater in the MBR tank 10 meets the initially set pH range. min -PH max )Require.

[0073] Determine whether the dissolved oxygen concentration of the wastewater in MBR tank 10 meets the initially set dissolved oxygen concentration range (i.e., the preset dissolved oxygen concentration range). To preset the minimum dissolved oxygen limit, To meet the preset maximum dissolved oxygen limit, if it is not met, the aeration rate of the aeration pipes in the MBR tank 10 will be increased, decreased, or even shut down by controlling the air compressor 3, so that the dissolved oxygen concentration of the wastewater in the MBR tank 10 meets the initially set dissolved oxygen concentration range. Require.

[0074] The aeration volume adjustment value Δy% of the aeration device is as follows. The coefficient k1 for calculating the aeration volume adjustment value is initially set and will be determined through subsequent operation and iteration:

[0075]

[0076] When the liquid level measured by the level gauge 11 in the MBR tank 10 is lower than the low liquid level, the effluent pump 4 stops running.

[0077] When the liquid level measured by the level gauge 11 in the MBR tank 10 is higher than the low liquid level but lower than the high liquid level, the liquid level remains unchanged regardless of the operating state of the outlet pump 4.

[0078] When the liquid level measured by the level gauge 11 in the MBR tank 10 is higher than the high liquid level, the effluent pump 4 will start if it has not started, and will operate at an adaptive speed according to the effluent water quality.

[0079] When the liquid level in the MBR tank 10 is higher than the warning level, the inlet water level valve 18 closes to stop the water intake.

[0080] During the filtration process, the addition rate of weak acid and weak alkali is adaptively adjusted by collecting the pH value in the MBR tank 10, the amount of weak acid and weak alkali added, and the water discharge rate of the effluent pump 4. This is achieved by adjusting the opening and closing time ratio of the weak acid regulating solenoid valve 22 or the weak alkali regulating solenoid valve 23.

[0081] During the filtration process, the aeration rate of the aeration device per unit time is adaptively adjusted by collecting the dissolved oxygen concentration in the MBR tank 10, the aeration rate of the aeration device 21, and the effluent velocity of the effluent pump 4.

[0082] Based on the initial sludge concentration range (η)min -η max The sludge concentration in the MBR tank 10 is adjusted to the required range by switching on and off the sludge pump 5 and adjusting the operating speed of the sludge pump 5.

[0083] During the filtration process, the operating speed of the sludge removal pump 5 is adaptively adjusted based on the collected sludge concentration value in the MBR tank 10, the on / off status of the sludge pump 5, and the effluent velocity of the effluent pump 4. The adjustment amount Δn wn as follows:

[0084]

[0085] During the filtration process, data from various indicators are collected from the second water quality self-testing sensor 15 inside the effluent detection tank 14. If any effluent water quality indicator exceeds the set value, indicating that the effluent water quality does not meet the standard, the operating speed of the effluent pump 4 needs to be reduced, and the adjustment amount Δn needs to be adjusted. cs1 as follows:

[0086]

[0087] During the filtration process, the data of each indicator of the second water quality self-testing sensor 15 in the water outlet detection tank 14 are collected. If any water quality indicator of the outlet is lower than the set value, the water quality of the outlet meets the standard. At this time, the self-circulation solenoid valve 7 is closed and the filter outlet solenoid valve 6 is opened, and the filtration system outputs water normally.

[0088] During the filtration process, data from various indicators of the second water quality self-testing sensor 15 inside the effluent detection tank 14 are collected. If any effluent water quality indicator is significantly lower than the set value (e.g., lower than k5 / 2 times the set value, i.e., 0.5 times the minimum water quality set value), meaning the effluent water quality far exceeds the standard, the operating speed of the effluent pump 4 is increased, with the pump speed increase being Δn. cs2 as follows:

[0089]

[0090] After increasing the operating speed of the outlet pump 4, the quality of the effluent water needs to be tested. This process is repeated to determine the maximum control speed n of the outlet pump. cs2 .

[0091] Maintain the adaptive operating speed of the outlet pump 4 n cs2 ×k6.

[0092] The adaptive rotation speed involves learning and iteratively finding the highest control speed n that meets the requirements for filtered water. cs2 Take the highest control speed n cs2 The speed is set at 6 times the k value as the high-speed operating speed (k6 is initially set at 90%, with a certain margin to prevent water quality from failing due to disturbances, and the speed will be determined iteratively during later operation).

[0093] The effluent water quality meets the requirements. During the filtration process, the effluent / self-circulation / backwash pipeline pump reverses at a certain time ratio. When the pipeline pump reverses, the filter effluent solenoid valve is closed and the clean water solenoid valve is opened; when the pipeline pump rotates forward, the clean water solenoid valve is closed and the filter effluent solenoid valve is opened.

[0094] Example 2

[0095] Embodiment 2 of the present invention provides an adaptive control system for an MBR water treatment device. The adaptive control system includes a sensor assembly and a controller. The sensor assembly is connected to the controller and includes: a first water quality self-test sensor, a second water quality self-test sensor, a pH detector, a sludge concentration detector, and a dissolved oxygen concentration detector. The controller is connected to the control terminals of the filter outlet solenoid valve, the self-circulation solenoid valve, the neutralization liquid regulating solenoid valve group, the air compressor, the sludge pump, and the outlet pump of the MBR water treatment device. The controller is used to control the MBR water treatment device using the adaptive control method of Embodiment 1.

[0096] For example, the controller can be integrated into the automatic control box 2.

[0097] In summary, the embodiments of the present invention achieve adaptive control of the MBR water treatment device without the need for operator intervention and improve control accuracy.

[0098] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0099] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method of adaptive control of an MBR water treatment plant, characterized in that, The adaptive control method comprises the following steps: When the MBR water treatment device is started, the filtered water electromagnetic valve is closed, the self-circulation electromagnetic valve is opened, the neutralizing liquid addition amount is actively calculated, the PH value of the sewage in the MBR tank is adjusted, the PH value of the sewage in the MBR tank is in the preset PH value range, the aeration amount adjustment value is actively calculated, the dissolved oxygen concentration of the sewage in the MBR tank is adjusted, and the dissolved oxygen concentration in the MBR tank is in the preset dissolved oxygen concentration range; When the water outlet condition is reached, the self-circulation electromagnetic valve is closed, the filtered water outlet electromagnetic valve is opened, the self-adaptive neutralizing liquid addition amount is adopted, the PH value of the sewage in the MBR tank is adjusted, the PH value of the sewage in the MBR tank is in the preset PH value range, the self-adaptive aeration amount adjustment value is adopted, the dissolved oxygen concentration of the sewage in the MBR tank is adjusted, and the dissolved oxygen concentration in the MBR tank is in the preset dissolved oxygen concentration range; when the sludge concentration in the MBR tank is in the preset sludge concentration range, the self-adaptive sludge pump speed adjustment amount is adopted, the sludge concentration in the MBR tank is adjusted, when the sludge concentration in the MBR tank is not in the preset sludge concentration range, the sludge pump speed adjustment amount is actively calculated, and the sludge concentration in the MBR tank is adjusted; when the water quality of the MBR tank is in the preset water quality range, the self-adaptive water outlet pump speed is adopted, the speed of the water outlet pump is adjusted, the self-adaptive running speed of the water pump is n cs2 ×k6, through learning, iteration is performed to find the highest speed n cs2 of the filter water under the condition that the requirements are met cs2 , and k6 times of the highest speed n cs2 is taken as the self-adaptive running speed; when the water quality of the MBR tank is not in the preset water quality range, the water outlet pump speed is actively calculated, and the speed of the water outlet pump is adjusted; When the water quality of the MBR tank is not in the preset water quality range, the water pump speed is actively calculated, the rotating speed of the water pump is adjusted, and the specific steps include: The water quality of the MBR tank is obtained as the current water quality value; It is judged whether the current water quality value is higher than the highest water quality setting value, and a fourth judgment result is obtained; If the fourth judgment result is yes, the water pump speed reduction amount is calculated according to the current water quality value, the rotating speed of the water pump is reduced according to the water pump speed reduction amount, and after the fifth preset time period after the rotating speed of the water pump is reduced, the step of "obtaining the water quality of the MBR tank as the current water quality value" is returned; If the fourth judgment result is no, it is judged whether the current water quality value is lower than 0.5 times the lowest water quality setting value, and a fifth judgment result is obtained; If the fifth judgment result is yes, the water pump speed increase amount is calculated according to the current water quality value, the rotating speed of the water pump is increased according to the water pump speed increase amount, and after the sixth preset time period after the rotating speed of the water pump is increased, the step of "obtaining the water quality of the MBR tank as the current water quality value" is returned; The formula for calculating the water pump speed reduction amount is: where Δn cs1 is the water pump speed reduction amount, and k3 is a coefficient for calculating the water pump speed reduction amount. The formula for calculating the water pump speed increase amount is: where Δn cs2 is the water pump speed increase, and k4 is a coefficient for calculating the water pump speed increase.

2. The adaptive control method of an MBR water treatment apparatus according to claim 1, characterized by, The PH value of the sewage in the MBR tank is obtained as the current PH value, the neutralizing liquid addition amount is calculated by using the acid-base neutralization operation according to the current PH value, the neutralizing liquid is added to the MBR tank by controlling the neutralizing liquid adjusting electromagnetic valve group according to the neutralizing liquid addition amount, the step of "obtaining the PH value of the sewage in the MBR tank as the current PH value" is returned after the first preset time period after the neutralizing liquid is added, and the PH value of the sewage in the MBR tank is in the preset PH value range. The dissolved oxygen concentration of the sewage in the MBR tank is obtained as the current dissolved oxygen concentration, the aeration amount adjustment value is calculated according to the current dissolved oxygen concentration, the air is added to the MBR tank by controlling the air compressor according to the aeration amount adjustment value, the step of "obtaining the dissolved oxygen concentration of the sewage in the MBR tank as the current dissolved oxygen concentration" is returned after the second preset time period after the air is added, and the dissolved oxygen concentration in the MBR tank is in the preset dissolved oxygen concentration range. The formula for calculating the aeration amount adjustment value is: Wherein, Δy% is the aeration amount adjustment value, and k1 is the coefficient for calculating the aeration amount adjustment value.

3. The adaptive control method of an MBR water treatment apparatus according to claim 1, characterized by, ​ ​ ​ ​ 4. The adaptive control method of an MBR water treatment apparatus according to claim 1 or 3, characterized by, ​ ​ 5. The adaptive control method of an MBR water treatment apparatus according to claim 1, characterized by, When the sludge concentration in the MBR tank is not within the preset sludge concentration range, the sludge pump rotation speed adjustment amount is actively calculated to adjust the sludge concentration in the MBR tank, and the method specifically comprises the following steps: Obtain the sludge concentration in the MBR tank as a current sludge concentration value; Determine whether the current sludge concentration value is lower than a minimum sludge concentration limit value to obtain a first determination result; If the first determination result is yes, turn off the sludge pump, and after a third preset time after the sludge pump is turned off, return to the step of obtaining the sludge concentration in the MBR tank as the current sludge concentration value when the water quality of the wastewater in the MBR tank does not meet the water quality standard; If the first determination result is no, determine whether the current sludge concentration value is higher than a maximum sludge concentration limit value to obtain a second determination result; If the second determination result is yes, calculate the sludge pump rotation speed adjustment amount according to the current sludge concentration value; Adjust the rotation speed of the sludge pump according to the sludge pump rotation speed adjustment amount, and after a fourth preset time period after the rotation speed is adjusted, return to the step of obtaining the sludge concentration in the MBR tank as the current sludge concentration value.

6. The adaptive control method of an MBR water treatment apparatus according to claim 5, characterized by, The formula for calculating the sludge pump rotation speed adjustment amount is: Where Δn wn is the sludge pump speed adjustment amount, and k2 is the coefficient for calculating the sludge pump speed adjustment amount.

7. The adaptive control method of an MBR water treatment apparatus according to claim 5, characterized by, Adjusting the rotation speed of the sludge pump according to the sludge pump rotation speed adjustment amount specifically comprises: Calculate the sum of the current rotation speed of the sludge pump and the sludge pump rotation speed adjustment amount as the adjusted sludge pump rotation speed; Determine whether the adjusted sludge pump rotation speed is greater than a maximum sludge pump rotation speed to obtain a third determination result; If the third determination result is yes, control the sludge pump to rotate at the maximum sludge pump rotation speed; If the third determination result is no, control the sludge pump to rotate at the adjusted sludge pump rotation speed.

8. An adaptive control system for an MBR water treatment plant, characterized by The adaptive control system comprises a sensor assembly and a controller; The sensor assembly is connected to the controller, and the sensor assembly comprises a first water quality self-checking sensor, a second water quality self-checking sensor, a pH value detector, a sludge concentration detector, and a dissolved oxygen concentration detector; The controller is connected to the control ends of a filtered water electromagnetic valve, a self-circulation electromagnetic valve, a neutralizing liquid adjustment electromagnetic valve group, an air compressor, a sludge pump, and a water outlet pump of an MBR water treatment device; The controller is configured to control the MBR water treatment device by using the adaptive control method of any one of claims 1-7.

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