Wastewater treatment equipment for breeding portunus trituberculatus

Abstract

The invention discloses wastewater treatment equipment for breeding of portunus trituberculatus, and relates to the technical field of wastewater treatment. Through cooperation of the cleaning assembly and the blow-off pipe, foam breaking and separated impurity flushing are facilitated, through cooperation of the foaming assembly and the separation assembly, foam adsorption impurities and water and foam separation are facilitated, the capacity of purifying water is achieved, and finally the problem that a large number of impurities remain in a recovery pipe when existing equipment recovers foam is solved; historical data are analyzed through the processing unit to determine the optimal chemical feeding amount and the cyclone separator power, adjustment is conducted according to the actual impurity content, and chemical waste and too high equipment energy consumption are avoided; the method has the advantages that treatment parameters are accurately controlled, the invalid operation time and unnecessary loss of equipment are reduced, the service life of the equipment is prolonged, the maintenance cost of the equipment is reduced, reasonable utilization of resources and effective control of cost are realized while the wastewater treatment effect is ensured, and the economic benefit is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to a wastewater treatment device for the breeding of Portunus trituberculatus. Background Art

[0002] Portunus trituberculatus is an important marine cultured crab in China and is widely distributed along the coast of China. At present, the breeding of Portunus trituberculatus mainly adopts the traditional earthen pond culture. With this breeding method, the breeding environment is greatly affected by the weather, and it is difficult to control the water quality. Long-term feed feeding and excrement and other high-protein impurities float in the water. These proteins will not only consume the dissolved oxygen in the water, causing hypoxia in the water body and affecting the respiration of Portunus trituberculatus, but also become a breeding ground for harmful microorganisms such as bacteria and viruses. Therefore, equipment for separating water and protein impurities is needed, and a protein separator based on the foam separation principle has become the first choice.

[0003] Existing protein skimmers usually directly recover foam using a pipeline structure. Since the foam form is unstable and easily breaks, a large amount of impurities accumulate in the recovery pipeline, not only polluting the equipment but also, when the foam breaks, the impurities that originally adhered to the foam will form sewage, and the sewage will flow back into the separation equipment, affecting the separation quality.

[0004] Therefore, the present invention improves the existing equipment in view of the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to provide a wastewater treatment device for the breeding of Portunus trituberculatus.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: A wastewater treatment device for the breeding of Portunus trituberculatus, including a separation tank. The separation tank is a tank structure with an opening at the top gradually narrowing. A cleaning cover is installed and fixed at the opening on the top surface of the separation tank through a flange. The cleaning cover is made of transparent glass material. A separation component is arranged in the separation tank, a cleaning component is arranged in the cleaning cover, and a foaming component is arranged on the separation component.

[0007] The separation component includes a control module. The control module includes a collection unit, a processing unit, and an adjustment unit.

[0008] The collection unit detects the impurity content data before and after removing impurities in the sewage, collects the data of the chemical agent dosage and the cyclone separator power, and transmits the collected impurity content, chemical agent dosage, and cyclone separator power data to the processing unit.

[0009] The processing unit processes the impurity content data before and after removing impurities in the sewage to obtain the impurity removal rate, and then combines the impurity removal rate with the chemical agent dosage and cyclone separator power data for analysis to determine the optimal chemical agent dosage and cyclone separator power; establishes the relationship between the chemical agent dosage, cyclone separator power and the impurity content in the sewage, generates a chemical agent dosage adjustment signal and a wind force adjustment signal according to the actual impurity content in the sewage, and transmits the chemical agent dosage adjustment signal and the wind force adjustment signal to the adjustment unit;

[0010] The adjustment unit receives the chemical agent dosage adjustment signal and the wind force adjustment signal, and adjusts the chemical agent dosage and the cyclone separator power according to the calculated actual chemical agent dosage and actual power.

[0011] Preferably, the separation component includes a water pump, the water pump is installed and fixed on the installation platform on one side of the separation tank, a flange connecting pipe is provided at the interface on the side of the water pump, and a water inlet pipe is connected and fixed through a flange at the interface on the top surface of the water pump.

[0012] Preferably, the cleaning component includes a first electric valve, the first electric valve is installed and fixed on the top end of the water inlet pipe through a flange, a cleaning pipe is communicated through a flange on the top surface of the first electric valve, the other end of the cleaning pipe penetrates through the top surface of the cleaning cover and is communicated with a water spraying pipe through a flange, the water spraying pipe is of an inverted U-shaped structure, and a plurality of nozzles are communicated with the water spraying pipe.

[0013] Preferably, the foaming component includes a foaming pipe, the foaming pipe is of a three-way elbow structure, one end of the foaming pipe is communicated with the side of the water inlet pipe through a flange, an air inlet pipe is communicated with the through hole on the side of the foaming pipe through a flange, and the other end of the air inlet pipe is connected with a third electric valve through a flange.

[0014] Preferably, the foaming pipe is communicated with the spiral separation barrel through a flange, the spiral separation barrel is installed and fixed inside the separation tank, the lower end of the spiral separation barrel penetrates through the separation tank and is installed with a second electric valve through a flange, and a water outlet pipe is installed and communicated on the top surface of the second electric valve.

[0015] Preferably, the bottom surface of the cleaning cover is hermetically connected to the upper end of the spiral separation barrel, a sewage discharge pipe is communicated with one side of the cleaning cover, and the other end of the sewage discharge pipe extends downward and is installed with a fourth electric valve.

[0016] Preferably, the steps for the processing unit to determine the optimal chemical agent dosage and the optimal cyclone separator power are as follows:

[0017] S1: Preset the impurity removal rate There is a linear relationship with the chemical agent dosage and the cyclone separator power ​​To represent the basic impurity removal rate when there is no chemical agent dosing and the separator is not operating, is the regression coefficient of the chemical agent dosing amount , is the regression coefficient of the cyclone separator power , is the error term;

[0018] S2: Retrieve groups of data from the historical sewage treatment data. Substitute the data corresponding to the time points in the historical data regarding the impurity removal rate , chemical agent dosing amount and cyclone separator power into the linear relationship formula between the impurity removal rate and the chemical agent dosing amount and cyclone separator power to obtain the estimated value of the impurity removal rate for the historical data. and are respectively the chemical agent dosing amount and cyclone separator power of the th group of data. According to the historical data, the actual impurity removal rate of the th group of data is , then the error of the th group of data;

[0019] S3: The sum of squared errors ; Take the partial derivatives of with respect to , and respectively, and set them equal to zero. Take the partial derivative of to obtain , take the partial derivative of to obtain , take the partial derivative of to obtain ;

[0020] S4: Solve the three obtained partial derivative equations to obtain the estimated values , and corresponding to , and ; When reaches the maximum value, determine that the chemical agent dosing amount and cyclone separator power at this time are the best, denoted as and .

[0021] Preferably, the analysis steps for the adjustment amounts of the chemical agent dosing amount and cyclone separator power by the processing unit are as follows:

[0022] M1: Historical data analysis reveals that the dosage of the medicament and the power of the cyclone separator are directly proportional to the impurity content in the sewage, and the proportionality coefficients are and respectively. Retrieve the impurity content data when the value reaches its maximum; ;

[0023] M2: When the detection device detects the actual impurity content in the sewage, it can calculate the most suitable dosage of the medicament and the power of the cyclone separator at this time according to the proportionality coefficients and . Calculate the difference between the most suitable dosage of the medicament and the actual dosage of the medicament to obtain the adjustment amount of the medicament dosage; calculate the difference between the most suitable power of the cyclone separator and the actual power of the cyclone separator to obtain the adjustment amount of the cyclone separator power:

[0024] M3: Generate a medicament dosage adjustment signal and a wind force adjustment signal respectively according to the medicament dosage adjustment amount and the cyclone separator power adjustment amount data, and transmit the medicament dosage adjustment signal and the wind force adjustment signal to the adjustment unit.

[0025] Preferably, the analysis steps of the impurity content in the sewage by the processing unit are as follows:

[0026] N1: Calibrate the turbidity sensor with a known turbidity standard solution to establish the corresponding relationship between the turbidity value and the electrical signal. The turbidity value of the sewage , is the intensity of the processed electrical signal received by the photodetector, and are the coefficients obtained through calibration;

[0027] N2: Detect the turbidity value of the sewage at regular intervals, calculate the mean and the standard deviation of multiple turbidity values detected at the same time, and set the data fluctuation range with the calculated mean and standard deviation. The fluctuation range is . Mark the turbidity value data that is not within the fluctuation range among the turbidity value data detected at the same time as abnormal values, and after screening out the abnormal values, calculate the mean of the remaining turbidity value data, and use the mean of the remaining turbidity value data as the turbidity value of the currently detected sewage.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. Through the cooperation of the cleaning component and the sewage discharge pipe, it is convenient to break the foam and wash the separated impurities, improving the practicability and realizing the ability to fully recover the impurities and sewage. Then, through the cooperation of the foaming component and the separation component, it is convenient to produce foam to adsorb impurities and separate water and foam, improving the practicability and realizing the ability to purify water quality. Finally, the problem that a large amount of impurities remain in the recovery pipe when the existing equipment recovers foam is solved;

[0030] 2. The processing unit analyzes historical data to determine the optimal chemical dosage and the power of the cyclone separator, and adjusts according to the actual impurity content, avoiding chemical waste and excessive equipment energy consumption; accurately controls the processing parameters, reduces the ineffective operation time and unnecessary losses of the equipment, extends the service life of the equipment, reduces the equipment maintenance cost, realizes the reasonable utilization of resources and the effective control of costs while ensuring the wastewater treatment effect, and improves the economic benefits;

[0031] 3. By using the turbidity sensor calibration to establish the relationship between the turbidity value and the electrical signal, and processing the turbidity data by calculating the mean value and the standard deviation to screen out the abnormal values, an accurate and stable sewage turbidity value is obtained, ensuring the accuracy of the decision-making of the processing unit, and then ensuring the stable operation of the entire wastewater treatment process and the reliability of the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 is a three-dimensional schematic view of the overall appearance of the device proposed by the present invention;

[0034] Figure 2 is a front view schematic of the overall appearance of the device proposed by the present invention;

[0035] Figure 3 is a rear view schematic of the overall appearance of the device proposed by the present invention;

[0036] Figure 4 is a three-dimensional schematic view of the structure of the separation component proposed by the present invention;

[0037] Figure 5 is a three-dimensional schematic view of the structure of the foaming component proposed by the present invention;

[0038] Figure 6 is a schematic view of the internal structure of the spiral separation barrel proposed by the present invention;

[0039] Figure 7 is a system flow chart proposed by the present invention.

[0040] Reference numerals in the figure: 1. Separation tank; 2. Cleaning cover; 3. Water pump; 4. Water inlet pipe; 5. First electric valve; 6. Cleaning pipe; 7. Water spraying pipe; 8. Foaming pipe; 9. Spiral separation barrel; 10. Second electric valve; 11. Water outlet pipe; 12. Air inlet pipe; 13. Third electric valve; 14. Sewage discharge pipe; 15. Fourth electric valve. Detailed implementation mode

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0042] Embodiment: Refer to Figure 1-6 , a wastewater treatment device for culturing Portunus trituberculatus seedlings in the present invention, includes a separation tank 1. The separation tank 1 is a tank structure with an opening at the top gradually narrowing. A cleaning cover 2 is installed and fixed at the opening on the top surface of the separation tank 1 through a flange. The cleaning cover 2 is made of transparent glass material. A separation component is arranged in the separation tank 1, a cleaning component is arranged in the cleaning cover 2, and a foaming component is arranged on the separation component. The modular design facilitates the maintenance and upgrade of the device and improves the practicability; the separation component includes a water pump 3. The water pump 3 is installed and fixed on the installation platform on one side of the separation tank 1. A flange connecting pipe is arranged at the interface on the side of the water pump 3. The interface on the top surface of the water pump 3 is connected and fixed with a water inlet pipe 4 through a flange. Through the cooperation of the water pump 3 and the water inlet pipe 4, it is convenient to extract the sewage in the breeding pond and transport it into the device, improving the practicability; the cleaning component includes a first electric valve 5. The first electric valve 5 is installed and fixed at the top of the water inlet pipe 4 through a flange. The top surface of the first electric valve 5 is communicated with a cleaning pipe 6 through a flange. The other end of the cleaning pipe 6 penetrates through the top surface of the cleaning cover 2 and is communicated with a water spraying pipe 7 through a flange. The water spraying pipe 7 is of an inverted U-shaped structure, and a plurality of nozzles are communicated with the water spraying pipe 7. Through the cooperation of the first electric valve 5 and the water spraying pipe 7, it is convenient to break the foam and wash the separated impurities, improving the practicability.

[0043] In the present invention, the foaming assembly includes a foaming pipe 8, which is a three-way elbow structure. One end of the foaming pipe 8 is connected to the side of the water inlet pipe 4 through a flange. At the side through-hole of the foaming pipe 8, it is connected to the air inlet pipe 12 through a flange. The other end of the air inlet pipe 12 is connected with a third electric valve 13 through a flange. Through the cooperation of the third electric valve 13 and the air inlet pipe 12, it is convenient for the mixed sewage and gas to produce bubbles, improving the practicability. The foaming pipe 8 is connected to the spiral separation barrel 9 through a flange. The spiral separation barrel 9 is installed and fixed inside the separation tank 1. The lower end of the spiral separation barrel 9 penetrates through the separation tank 1 and is installed with a second electric valve 10 through a flange. The top surface of the second electric valve 10 is installed and connected with a water outlet pipe 11. Through the cooperation of the second electric valve 10 and the water outlet pipe 11, it is convenient to control the water output of the device, improving the practicability. The bottom surface of the cleaning cover 2 is hermetically connected to the upper end of the spiral separation barrel 9. One side of the cleaning cover 2 is connected with a sewage discharge pipe 14. The other end of the sewage discharge pipe 14 extends downward and is installed with a fourth electric valve 15. Through the cooperation of the fourth electric valve 15 and the sewage discharge pipe 14, it is convenient to control the sewage discharge amount, improving the practicability.

[0044] The separation assembly includes a control module, and the control module includes a collection unit, a processing unit and an adjustment unit;

[0045] By adding a foam-generating agent to the sewage, and then using a cyclone separator to take away the foam floating on the sewage, the impurities contained in the foam are separated from the sewage, achieving the effect of purifying the water quality; preset impurity removal rate and the dosage of the agent and the power of the cyclone separator have a linear relationship. , represents the basic impurity removal rate without agent addition and separator operation. is the dosage of the agent of the regression coefficient. is the power of the cyclone separator of the regression coefficient. is the error term;

[0046] Retrieve groups of data in the historical data of sewage treatment. Substitute the data of the corresponding time points in the historical data regarding the impurity removal rate , the dosage of the agent and the power of the cyclone separator into the linear relationship formula between the impurity removal rate and the dosage of the agent and the power of the cyclone separator to obtain the estimated value of the impurity removal rate of the historical data. and are respectively the The dosage of the medicament and the power of the cyclone separator for a group of data. According to historical data, the actual impurity removal rate of the th group of data is , then the error of the th group of data;

[0047] To minimize the overall error of all data, we construct the sum of squared errors as the objective function, and the sum of squared errors ; For , find the partial derivatives with respect to , and respectively, and set them equal to zero. Take the partial derivative of to get , take the partial derivative of to get , take the partial derivative of to get ; Solve the three partial derivative equations obtained to get the estimated values , and corresponding to , and ; When reaches the maximum value, determine that the dosage of the medicament and the power of the cyclone separator at this time are the best, denoted as and ;

[0048] Through historical data analysis, it is found that the dosage of the medicament and the power of the cyclone separator are in a direct proportional relationship with the impurity content in the sewage, and the proportionality coefficients are and respectively. Retrieve the impurity content data when reaches the maximum value; When the detection device detects the actual impurity content in the sewage, it can calculate the most suitable dosage of the medicament and the power of the cyclone separator at this time according to the proportionality coefficients and , and make adjustments according to the most suitable dosage of the medicament and the power of the cyclone separator at this time.

[0049] Calibrate the turbidity sensor using a known turbidity standard solution to establish the corresponding relationship between the turbidity value and the electrical signal. The turbidity value of the sewage, is the intensity of the processed electrical signal received by the photodetector, and is the coefficient obtained through calibration; then the turbidity sensor is immersed in the sewage to be measured. The light emitted by the light source in the turbidity sensor propagates in the sewage. When encountering suspended impurities, the light will be scattered and absorbed; the photodetector in the turbidity sensor receives the optical signal after being affected by the sewage, converts the received optical signal into an electrical signal, and records the electrical signal.

[0050] The turbidity value of the sewage is detected every set time period, and the average value and standard deviation are calculated, and the data fluctuation range is set based on the calculated average value and standard deviation. The fluctuation range is . The turbidity value data that is not within the fluctuation range among the turbidity value data detected at the same time is marked as an outlier. After screening out the outliers, the average value of the remaining turbidity value data is calculated, and the average value of the remaining turbidity value data is used as the turbidity value of the currently detected sewage.

[0051] Working principle: When the present invention is in use, first supply power to all electrical equipment, then connect the connecting pipe of the aquaculture reservoir to the interface on the side of the water pump 3, and then start the water pump 3 through the controller. The water pump 3 first extracts sewage from the reservoir, and then transports it into the foaming pipe 8 through the water inlet pipe 4. At the same time, start the third electric valve 13 to control an appropriate amount of gas to enter the foaming pipe 8 through the gas inlet pipe 12. After the sewage and gas are mixed, they enter the spiral separation barrel 9. After the mixed water enters the spiral separation barrel 9, it will first collide with the inner wall of the spiral separation barrel 9, and then spiral downwards. At the same time, a large number of bubbles are generated in the water. The bubbles will adsorb the protein impurities in the water, and then concentrate towards the middle of the spiral separation barrel 9 under the action of buoyancy. At this time, the heavier water clings to the inner wall of the spiral separation barrel 9 due to centrifugal force. At this time, the heavier water clings to the inner wall of the spiral separation barrel 9 due to centrifugal force. The spiral movement of the fluid will drive the air flow in the middle of the separation barrel 9 to form a reverse upward swirling flow, and the foam will concentrate in the middle and gradually move upward under the action of the air flow swirling flow, so as to realize the separation of water and foam. The purified water separated will enter the second electric valve 10 from below the spiral separation barrel 9, and then control the water passing amount by adjusting the second electric valve 10, and then return to the reservoir through the water outlet pipe 11 to complete the purified water work. The foam will flow into the cleaning cover 2 from above the spiral separation barrel 9, and then start the first electric valve 5. Then a part of the water in the water inlet pipe 4 enters the cleaning pipe 6, and then enters the spray pipe 7 and sprays out from the nozzle, so as to break the foam and wash away the impurities. Finally, it enters the fourth electric valve 15 through the sewage discharge pipe 14, and start the fourth electric valve 15 to control the water passing amount to achieve the effective recovery of the impurities.

[0052] Foam separation is based on the principle of adsorption. Bubbles are blown into the liquid containing surface active substances, causing the surface active substances in the liquid to accumulate at the gas-liquid interface (the surface of the bubbles). A foam layer is formed above the liquid body. By separating the foam layer from the main liquid phase, the purpose of concentrating the surface active substances (in the foam layer) and purifying the main liquid phase can be achieved. The cyclone separation technology forms a vortex when the fluid enters the conical barrel through an offset water inlet. Under the centrifugal force, the heavier water clings to the inner wall of the conical barrel, and at the same time, an upward airflow is formed in the middle of the conical barrel, which drives the bubbles floating out of the water body to rise. When the bubbles rise in the barrel, they mainly rise synchronously as a whole wrapped by the airflow and will not be squeezed against each other to cause the foam to break. After losing the upward airflow, the moving mode is driven forward by the extrusion of the foam behind. During the extrusion process, the foam is prone to break. The unbroken foam after extrusion breaks under the action of the water flow ejected from the water spray pipe 7, so that the impurities contained in the foam are recovered.

[0053] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A wastewater treatment device for Portunus trituberculatus seedling cultivation, including a separation tank (1), characterized in that: The separation tank (1) is a tank structure with a gradually narrowing opening at the top. A cleaning cover (2) is fixedly installed at the opening on the top surface of the separation tank (1) through a flange. The cleaning cover (2) is made of transparent glass material. A separation component is provided inside the separation tank (1), a cleaning component is provided inside the cleaning cover (2), and a foaming component is provided on the separation component; The separation component includes a control module, and the control module includes a collection unit, a processing unit, and an adjustment unit; The collection unit detects the impurity content data before and after impurity removal in the sewage, collects the data of the chemical agent dosage and the cyclone separator power, and transmits the collected impurity content, chemical agent dosage, and cyclone separator power data to the processing unit; The processing unit processes the impurity content data before and after impurity removal in the sewage to obtain the impurity removal rate, then combines the impurity removal rate with the chemical agent dosage and cyclone separator power data for analysis to determine the optimal chemical agent dosage and cyclone separator power; establishes the relationship between the chemical agent dosage, cyclone separator power, and impurity content in the sewage, generates a chemical agent dosage adjustment signal and a wind force adjustment signal according to the actual impurity content in the sewage, and transmits the chemical agent dosage adjustment signal and the wind force adjustment signal to the adjustment unit; The adjustment unit receives the chemical agent dosage adjustment signal and the wind force adjustment signal, and adjusts the chemical agent dosage and the cyclone separator power according to the calculated actual chemical agent dosage and actual power.

2. The wastewater treatment equipment for Portunus trituberculatus seedling cultivation according to claim 1, characterized in that: The separation component includes a water pump (3). The water pump (3) is fixedly installed on the installation platform on one side of the separation tank (1). A flange connecting pipe is provided at the interface on the side of the water pump (3), and a water inlet pipe (4) is fixedly connected to the interface on the top surface of the water pump (3) through a flange.

3. The wastewater treatment equipment for Portunus trituberculatus seedling cultivation according to claim 1, characterized in that: The cleaning component includes a first electric valve (5). The first electric valve (5) is fixedly installed at the top of the water inlet pipe (4) through a flange. A cleaning pipe (6) is communicated with the top surface of the first electric valve (5) through a flange. The other end of the cleaning pipe (6) penetrates through the top surface of the cleaning cover (2) and is communicated with a water spraying pipe (7) through a flange. The water spraying pipe (7) is of an inverted U-shaped structure, and a plurality of nozzles are communicated with the water spraying pipe (7).

4. The wastewater treatment equipment for Portunus trituberculatus seedling cultivation according to claim 1, characterized in that: The foaming component includes a foaming pipe (8). The foaming pipe (8) is of a three-way elbow structure. One end of the foaming pipe (8) is communicated with the side of the water inlet pipe (4) through a flange. An air inlet pipe (12) is communicated with the through hole on the side of the foaming pipe (8) through a flange. The other end of the air inlet pipe (12) is connected with a third electric valve (13) through a flange.

5. The wastewater treatment equipment for Portunus trituberculatus seedling cultivation according to claim 4, characterized in that: The foaming pipe (8) is communicated with a spiral separation barrel (9) through a flange. The spiral separation barrel (9) is fixedly installed inside the separation tank (1). The lower end of the spiral separation barrel (9) penetrates through the separation tank (1) and is installed with a second electric valve (10) through a flange. A water outlet pipe (11) is installed and communicated with the top surface of the second electric valve (10).

6. The wastewater treatment equipment for Portunus trituberculatus seedling cultivation according to claim 3, characterized in that: The bottom surface of the cleaning cover (2) is hermetically connected to the upper end of the spiral separation barrel (9). A sewage discharge pipe (14) is communicated with one side of the cleaning cover (2). The other end of the sewage discharge pipe (14) extends downward and is installed with a fourth electric valve (15).

7. The wastewater treatment equipment for Portunus trituberculatus seedling cultivation according to claim 1, characterized in that: The steps for the processing unit to determine the optimal chemical dosing amount and the optimal cyclone separator power are as follows: S1: Predetermined impurity removal rate There is a linear relationship with the chemical agent dosage and the cyclone separator power , , wherein represents the basic impurity removal rate without chemical agent dosage and separator operation, is the chemical agent dosage regression coefficient, is the cyclone separator power regression coefficient, is the error term; S2: Retrieve the group of data from the historical sewage treatment data, and substitute the data of the impurity removal rate , chemical agent dosage and cyclone separator power at the corresponding time point in the historical data into the linear relationship formula of the impurity removal rate with the chemical agent dosage and cyclone separator power to obtain the estimated value of the impurity removal rate for the historical data , and are the chemical agent dosage and cyclone separator power of the th group of data respectively. According to the historical data, the actual impurity removal rate of the th group of data is . Then the error of the th group of data; S3: Sum of Squared Errors ; For respectively find the partial derivatives with respect to , and , and set them equal to zero. Taking the partial derivative of gives , taking the partial derivative of gives , and taking the partial derivative of gives ; S4: Solve the three obtained partial derivative equations to obtain , and corresponding estimated values , and ; when reaches the maximum value, determine that the medicament dosage and cyclone separator power at this time are optimal, denoted as and .

8. A wastewater treatment device for Portunus trituberculatus seedling breeding according to claim 7, characterized in that: The steps for the processing unit to analyze the adjustment amounts of the chemical dosing amount and the cyclone separator power are as follows: M1: Historical data analysis reveals that the dosage of the medicament and the power of the cyclone separator are directly proportional to the impurity content in the sewage , and the proportionality coefficients are respectively and . Retrieve the impurity content data when the value reaches the maximum; M2: When the detection device detects the actual impurity content in the sewage, it can calculate the most appropriate chemical dosing amount and cyclone separator power at this time according to the proportionality coefficients and calculate the difference between the most appropriate chemical dosing amount and the actual chemical dosing amount to obtain the chemical dosing adjustment amount; Calculate the difference between the most suitable cyclone separator power and the actual cyclone separator power to obtain the adjustment amount of the cyclone separator power: M3: Generate a chemical dosing adjustment signal and a wind force adjustment signal respectively according to the chemical dosing adjustment amount and the cyclone separator power adjustment amount data, and transmit the chemical dosing adjustment signal and the wind force adjustment signal to the adjustment unit.

9. The wastewater treatment equipment for Portunus trituberculatus seedling cultivation according to claim 7, characterized in that: The steps for the processing unit to analyze the impurity content in the sewage are as follows: N1: Calibrate the turbidity sensor using a known turbidity standard solution to establish the correspondence between the turbidity value and the electrical signal. The turbidity value of the sewage , is the intensity of the processed electrical signal received by the photodetector, and are the coefficients obtained through calibration; N2: Detect the turbidity value of the sewage at every set time interval, calculate the mean value and standard deviation of multiple turbidity values detected at the same time, and set the data fluctuation range with the calculated mean value and standard deviation. The fluctuation range is and standard deviation . Mark the turbidity value data that is not within the fluctuation range among the turbidity value data detected at the same time as outliers. After screening out the outliers, calculate the mean value of the remaining turbidity value data, and use the mean value of the remaining turbidity value data as the turbidity value of the currently detected sewage. ​

Images