Micro-plastic detection and degradation device

Abstract

The technical problem to be solved by the invention is to provide the micro-plastic detection and degradation device which can realize detection and decomposition of micro-plastic and effectively reduce micro-plastic pollution sources. The device comprises a base, a power supply assembly, a detection and degradation assembly and a control assembly are arranged on the base, and the detection and degradation assembly and the control assembly are electrically connected with the power supply assembly; the detection and degradation assembly comprises a bacterial liquid container, a reaction container, a micro-plastic liquid container and a detection container, the reaction container is provided with a temperature sensor and a PH value sensor, the detection container is provided with a color recognition sensor, and the micro-plastic is subjected to color reaction after being combined with the colloidal gold; the RGB value of the color appearing after the micro-plastic and the colloidal gold are combined is measured through the color recognition sensor and transmitted to the control assembly, the concentration of the micro-plastic liquid is obtained through calculation, the micro-plastic is degraded through biological reaction by mixing the bacterial liquid and the micro-plastic liquid, and the purpose of degrading the micro-plastic is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of microplastics, and in particular to a microplastics detection and degradation device. Background Art

[0002] In recent years, with the rapid growth of plastic production and use, microplastic pollution has become a major challenge to the global environment. Microplastics are usually defined as plastic particles with a diameter of less than 5 mm. The main sources include the decomposition of plastic products in the environment, plastic microbeads in personal care products, wear of synthetic fibers, and leakage of industrial plastic particles. The difficult-to-degrade nature of microplastics not only causes them to exist in the environment for a long time, but also leads to their profound negative impact on ecosystems and human health. Therefore, how to reduce the source of plastic pollution and develop effective microplastic degradation technology has become an important issue facing today's society.

[0003] In view of the above problems, it is necessary to provide a detection and degradation device to reduce the source of microplastic pollution. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a microplastic detection and degradation device, which can realize the detection and decomposition of microplastics and effectively reduce the source of microplastic pollution.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the microplastic detection and degradation device comprises a base, on which a power supply component, a detection and degradation component, and a control component are arranged, and the detection and degradation component and the control component are electrically connected to the power supply component respectively;

[0006] The detection and degradation component includes a bacterial liquid container, a reaction container, and a microplastic liquid container;

[0007] The bacterial liquid container is connected to the reaction container via a first liquid pipe and the bacterial liquid container is higher than the reaction container. The first liquid pipe is provided with a first solenoid valve and is in communication with the control component.

[0008] The microplastic liquid container is connected to the reaction container via a second liquid pipe and the microplastic liquid container is higher than the reaction container. The second liquid pipe is provided with a second solenoid valve and is in communication with the control component.

[0009] The reaction container is provided with a liquid discharge pipe, the liquid discharge pipe is provided with a third solenoid valve and is communicatively connected with the control component;

[0010] A mounting plate is provided at the upper end of the inner cavity of the reaction container, a temperature sensor and a pH value sensor are provided on the mounting plate, and the probe of the temperature sensor and the measuring electrode of the pH value sensor are both located in the liquid in the reaction container, and the temperature sensor and the pH value sensor are respectively connected to the control component for communication;

[0011] A detection container is arranged on the outer side wall of the microplastic liquid container, and a color recognition sensor is arranged on the outer side wall of the detection container and is communicatively connected with the control component.

[0012] Furthermore, the base, bacterial liquid container, reaction container, microplastic liquid container, first liquid tube, second liquid tube, detection container, and mounting plate are all made of high-transparency acrylic plate;

[0013] The drainage pipe is a transparent PU water pipe.

[0014] Furthermore, the power supply assembly includes a switching power supply, a DC step-down device, and a four-way relay;

[0015] The input end of the switching power supply is connected to the mains, and the switching power supply is used to convert 220V alternating current into 24V direct current;

[0016] The input end of the DC step-down device is electrically connected to the output end of the switching power supply, and the DC step-down device adopts a three-way DC step-down device and converts 24V DC power into three-way DC power of 12V, 8V and 5V;

[0017] The positive and negative electrodes of the 5V output end of the DC step-down device are respectively electrically connected to the two pins of the positive and negative electrodes of the input end of the four-way relay, three of the control ports of the four-way relay are respectively connected to the three capacitive touch modules, the four NO terminals of the four-way relay are all electrically connected to the positive electrode of the output end of the switching power supply, the positive electrode of the first solenoid valve, the positive electrode of the second solenoid valve, and the positive electrode of the third solenoid valve are respectively electrically connected to the three COM terminals of the four-way relay connected to the capacitive touch module, the negative electrode of the first solenoid valve, the negative electrode of the second solenoid valve, and the negative electrode of the third solenoid valve are all electrically connected to the negative electrode of the output end of the switching power supply, and the four NC terminals of the four-way relay are all grounded;

[0018] The temperature sensor, pH value sensor and color recognition sensor are electrically connected to the 5V output port of the DC step-down device respectively.

[0019] Furthermore, the control component includes a first development board, a second development board, and a display screen;

[0020] The first development board adopts an Arduino UNO R3 development board based on ATmega328p, the second development board adopts an Arduino Mega2560 development board based on ATmega2560, and the display screen adopts a 3.5-inch display screen of model ArduinoDisplay-Mega2560;

[0021] The display screen is arranged on the front side of the base and is directly connected to the second development board;

[0022] The first development board and the second development board are connected by serial communication;

[0023] The first development board and the second development board are electrically connected to the 12V output port of the DC step-down device respectively;

[0024] The temperature sensor, pH value sensor, color recognition sensor, and driving module are respectively connected to the first development board for communication.

[0025] Furthermore, the reaction vessel is provided with a heating system;

[0026] The heating system includes an electric heating plate and a driving module;

[0027] The electric heating plate is arranged below the reaction container, and a heat-conducting soft silicone gasket is arranged between the electric heating plate and the reaction container;

[0028] The input end of the driving module is electrically connected to the output end of the switching power supply, and the electric heating plate is electrically connected to the output end of the driving module;

[0029] The signal control terminal of the driving module is communicatively connected with the first development board.

[0030] Furthermore, the reaction vessel is provided with a stirring system;

[0031] The stirring system includes a stirring motor, a fixing plate is arranged above the reaction container through a copper column, and the stirring motor is arranged on the fixing plate;

[0032] The output shaft of the stirring motor passes through the fixing plate, the mounting plate is provided with a through hole, a stirring rod is provided on the output shaft of the stirring motor, and the lower end of the stirring rod passes through the through hole and extends to the middle and lower part of the inner cavity of the reaction container, and a stirring blade is provided at the lower end of the stirring rod;

[0033] The positive pole of the stirring motor is electrically connected to the remaining COM terminal of the four-way relay, the negative pole of the stirring motor is electrically connected to the negative pole of the output terminal of the switching power supply, and the remaining control port of the four-way relay is connected to a first button switch for controlling the stirring motor, and the other end of the first button switch is electrically connected to the 5V output port of the DC step-down.

[0034] Furthermore, a first LED white light fill lamp is provided at the bottom of the detection container;

[0035] The power of the first LED white light fill light is 10W, the first LED white light fill light is electrically connected to the 8V output port of the DC step-down device, and a second button switch is arranged between the first LED white light fill light and the 8V output port of the DC step-down device.

[0036] Furthermore, a second LED white light fill lamp is provided at the bottom of the microplastic solution container;

[0037] The power of the second LED white light fill light is 10W, the second LED white light fill light is electrically connected to the 8V output port of the DC step-down device, and a third button switch is arranged between the second LED white light fill light and the 8V output port of the DC step-down device.

[0038] Furthermore, an ultraviolet sterilization structure is provided on the base;

[0039] The ultraviolet sterilization structure includes an ozone-free ultraviolet lamp, which corresponds to the drain pipe and is electrically connected to the 12V output port of the DC step-down device. A fourth button switch is provided between the ozone-free ultraviolet lamp and the 12V output end of the DC step-down device.

[0040] Furthermore, the first button switch, the second button switch, the third button switch, and the fourth button switch all use button switches with model KAN-28; the DC step-down device uses a DC-DC three-way DC step-down device with model LM2596; the temperature sensor uses a temperature sensor with model DS18B20; the color recognition sensor uses a color recognition sensor with model TCS34725; the first solenoid valve, the second solenoid valve, and the third solenoid valve all use solenoid valves with model 2W-025-08.

[0041] The beneficial effects of the present invention are as follows:

[0042] 1. By adding an appropriate amount of microplastic liquid solution and colloidal gold test agent into the detection container, a color reaction will appear after the microplastic and colloidal gold combine. The RGB value of the color that appears after the microplastic and colloidal gold combine is measured by the set color recognition sensor, and transmitted to the control component for calculation and processing to obtain the concentration of the microplastic liquid.

[0043] 2. The bacterial liquid in the bacterial liquid container is drained into the reaction container through the first solenoid valve, and the microplastic liquid in the microplastic liquid container is drained into the reaction container through the second solenoid valve, so that the bacterial liquid and the microplastic liquid are mixed, and the microplastics are degraded through biological reaction to achieve the purpose of microplastic degradation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of the microplastic detection and degradation device described in the present invention;

[0045] Figure 2 is a top view of the microplastic detection and degradation device described in the present invention;

[0046] Figure 3 is a structural schematic diagram of the microplastic detection and degradation device of the present invention from another perspective;

[0047] Figure 4 is a top view of the partial structure of the microplastic detection and degradation device described in the present invention;

[0048] Figure 5 It is a rear view of the partial structure of the microplastic detection and degradation device described in the present invention;

[0049] Figure 6 It is a schematic diagram of the combined structure of the reaction container, stirring system, heating system, temperature sensor and pH value sensor of the present invention;

[0050] Figure 7 It is a structural schematic diagram of the stirring motor, stirring rod and stirring blade combination of the present invention;

[0051] Figure 8 It is a schematic diagram of the combined structure of the microplastic liquid container, the detection container, the color recognition sensor, the first LED white light fill light, and the second LED white light fill light according to the present invention;

[0052] Markings in the figure: base 1, bacterial liquid container 2, reaction container 3, microplastic liquid container 4, first solenoid valve 5, second solenoid valve 6, third solenoid valve 7, drain pipe 8, temperature sensor 9, pH sensor 10, detection container 11, color recognition sensor 12, switching power supply 13, DC buck 14, four-way relay 15, first development board 16, second development board 17, display screen 18, electric heating plate 19, fixing plate 20, drive module 21, thermal conductive soft silicone gasket 22, mounting plate 23, stirring motor 24, stirring rod 25, stirring blade 26, first button switch 27, first LED white light fill light 28, second LED white light fill light 29, ozone-free ultraviolet lamp 30, second button switch 31, third button switch 32, fourth button switch 33, capacitive touch module 34, perforation 35, copper column 36. DETAILED DESCRIPTION

[0053] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] It should be noted that the directions or positional relationships indicated by all directional indication terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" in the embodiments of the present application are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. They are only used to explain the relative positional relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0055] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0057] like Figure 1-8 As shown, the microplastic detection and degradation device comprises a base 1, which is used to fix various components. The base 1 is provided with a power supply component, a detection and degradation component, and a control component, and the detection and degradation component and the control component are electrically connected to the power supply component respectively;

[0058] The detection and degradation component includes a bacterial liquid container 2, a reaction container 3, and a microplastic liquid container 4. The bacterial liquid container 2 contains a bacterial liquid for biologically reacting with the microplastic liquid, which is an Escherichia coli bacterial liquid that has been gene-edited to produce enzymes that can decompose microplastics. The microplastic liquid container 4 contains a liquid containing microplastics, which is derived from a contaminated water sample. The reaction container 3 is used to mix the bacterial liquid and the microplastic liquid so that the two undergo a biological reaction.

[0059] The bacterial liquid container 2 is connected to the reaction container 3 through a first liquid pipe, and the bacterial liquid container 2 is higher than the reaction container 3. The first liquid pipe is provided with a first electromagnetic valve 5 and is in communication connection with the control component. The height of the bacterial liquid container 2 is higher than that of the reaction container 3 so as to ensure that the bacterial liquid in the bacterial liquid container 2 can smoothly enter the reaction container 3 when the first electromagnetic valve 5 is opened, and the mixed liquid in the reaction container 3 will not flow back into the bacterial liquid container 2.

[0060] The microplastic liquid container 4 is connected to the reaction container 3 through a second liquid pipe and the microplastic liquid container 4 is higher than the reaction container 3. The second liquid pipe is provided with a second solenoid valve 6 and is in communication connection with the control component. The height of the microplastic liquid container 4 is higher than that of the reaction container 3 so as to ensure that the liquid in the microplastic liquid container 4 can smoothly enter the reaction container 3 when the second solenoid valve 6 is opened, and the mixed liquid in the reaction container 3 will not flow back into the microplastic liquid container 4;

[0061] The reaction container 3 is provided with a drain pipe 8, and the drain pipe 8 is provided with a third solenoid valve 7 and is communicatively connected with the control component. When the biological reaction of the mixed liquid of the bacterial liquid and the microplastic liquid in the reaction container 3 is completed, the third solenoid valve 7 is opened to discharge the liquid in the reaction container 3 through the drain pipe 8. The biological reaction time is generally about 24 hours. The third solenoid valve 7 is opened to discharge the liquid in the reaction container 3, and then the degradation product of the reaction is measured (by high-efficiency HPLC liquid phase mass spectrometry in the laboratory). The reaction is carried out by utilizing the catalytic action of the enzyme, and the enzyme can be reused in theory; in addition, the use of the above three solenoid valves effectively replaces the role of the water pump, and the flow rate can be better controlled;

[0062] A mounting plate 23 is provided at the upper end of the inner cavity of the reaction container 3, and a temperature sensor 9 and a pH sensor 10 are provided on the mounting plate 23, and the probe of the temperature sensor 9 and the measuring electrode of the pH sensor 10 are both located in the liquid in the reaction container 3, that is, a mounting hole adapted to the temperature sensor 9 and the pH sensor 10 is provided on the mounting plate 23, and the temperature sensor 9 and the pH sensor 10 are fixedly installed through the corresponding mounting holes, and the temperature sensor 9 and the pH sensor 10 are respectively communicated and connected with the control component, and the temperature of the liquid in the reaction container 3 is monitored in real time by the set temperature sensor 9 to ensure that the temperature is maintained at the optimum temperature required for the reaction. When the temperature is lower than the optimum temperature, the temperature can be maintained at the optimum temperature required for the reaction by means of a heating device, and the pH value of the liquid in the reaction container 3 is monitored in real time by the pH sensor 10, and when the pH value deviates, the corresponding buffer solution can be added in time to adjust it so that it is kept within a suitable pH value range;

[0063] A detection container 11 is arranged on the outer wall of the microplastic liquid container 4. The detection container 11 is arranged at the front end of the left side wall of the microplastic liquid container 4. A color recognition sensor 12 is arranged on the outer wall of the detection container 11 and is communicatively connected with the control component. The color recognition sensor 12 is specifically arranged on the left side wall of the detection container 11. Liquid containing microplastics and colloidal gold test agent are added to the detection container 11. The liquid containing microplastics is also a contaminated water sample. Different color reactions will appear for microplastic solutions of different concentrations. The RGB value of the color that appears after the microplastics and colloidal gold are combined is measured by the set color recognition sensor 12, and transmitted to the control component to calculate the concentration of the microplastic liquid. Measuring the concentration of the sample microplastic can better handle the contaminated water of the corresponding source.

[0064] In this example, in order to more conveniently display the internal structure and ensure the correct recognition of the color reaction by the color recognition sensor 12, the base 1, the bacterial liquid container 2, the reaction container 3, the microplastic liquid container 4, the first liquid tube, the second liquid tube, the detection container 11, and the mounting plate 23 are all made of high-transparency acrylic plates;

[0065] The drain pipe 8 is made of a transparent PU water pipe. The transparent material can clearly show the internal structure and ensure that the color recognition sensor 12 can correctly recognize the color reaction.

[0066] like Figure 1 , Figure 3 As shown, in this example, as a preference, the power supply assembly includes a switching power supply 13, a DC step-down converter 14, and a four-way relay 15;

[0067] The input end of the switching power supply 13 is connected to the mains, and the switching power supply 13 is used to convert 220V AC power into 24V DC power;

[0068] The input end of the DC voltage reducer 14 is electrically connected to the output end of the switching power supply 13. The DC voltage reducer 14 adopts a three-way DC voltage reducer 14. The three-way DC voltage reducer 14 can convert 24V DC power into three-way DC power of 12V, 8V and 5V, so as to meet the voltage requirements of different electrical components;

[0069] The positive and negative electrodes of the 5V output end of the DC step-down device 14 are respectively electrically connected to the two pins of the positive and negative electrodes of the input end of the four-way relay 15, three of the control ports of the four-way relay 15 are respectively connected to the three capacitive touch modules 34, the four NO terminals of the four-way relay 15 are all electrically connected to the positive electrode of the output end of the switching power supply 13, the positive electrode of the first solenoid valve 5, the positive electrode of the second solenoid valve 6, and the positive electrode of the third solenoid valve 7 are respectively electrically connected to the three COM terminals of the four-way relay 15 connected with the capacitive touch module 34, the negative electrode of the first solenoid valve 5, the negative electrode of the second solenoid valve 6, and the negative electrode of the third solenoid valve 7 are all electrically connected to the negative electrode of the output end of the switching power supply 13, and the four NC terminals of the four-way relay 15 are all grounded, and the corresponding solenoid valve can be opened by touching the corresponding capacitive touch module 34;

[0070] The temperature sensor 9 , the pH value sensor 10 , and the color recognition sensor 12 are electrically connected to the 5V output port of the DC step-down converter 14 , respectively.

[0071] like Figure 1 , Figure 2 As shown, in this example, as a preference, the control component includes a first development board 16, a second development board 17, and a display screen 18;

[0072] The first development board 16 adopts an Arduino UNO R3 development board based on ATmega328p, and the second development board 17 adopts an Arduino Mega2560 development board based on ATmega2560. The Arduino IDE is used to program the Arduino UNO R3 development board and the Arduino Mega2560 development board in the control system. The program in the Arduino UNO R3 development board includes a temperature sensor 9 measuring temperature and outputting it in a serial port, a PH sensor measuring PH value and outputting it in a serial port, and a color recognition sensor 12 measuring RGB values ​​and outputting the calculated microplastic liquid concentration in a serial port. When the PH value deviates, the corresponding buffer solution can be added in time for adjustment. Measuring the concentration of sample microplastics can also better deal with the polluted water body of the corresponding source. The program in the Arduino Mega2560 development board includes receiving the value output by the serial port of the Arduino UNO R3 development board and displaying it in real time on a display screen 18. The display screen 18 adopts a 3.5-inch display screen 18 of model ArduinoDisplay-Mega2560;

[0073] The display screen 18 is arranged on the front side of the base 1 and is directly connected to the second development board 17. All pins (including power supply) are connected to the second development board 17. The display screen 18 is used to display data information such as the detected temperature, pH value and microplastic concentration;

[0074] The first development board 16 and the second development board 17 are connected by serial communication;

[0075] The first development board 16 and the second development board 17 are electrically connected to the 12V output port of the DC step-down device 14 respectively;

[0076] The temperature sensor 9 , pH sensor 10 , color recognition sensor 12 , and driving module 21 are respectively connected to the first development board 16 for communication. The first development board 16 collects data from each sensor and transmits the data to the second development board 17 . The second development board 17 processes and calculates various data and displays them intuitively through the display screen 18 .

[0077] like Figure 2-6 As shown, in this example, in order to facilitate maintaining the temperature of the mixed liquid in the reaction container 3 at the optimal temperature required for the reaction, the reaction container 3 is provided with a heating system;

[0078] The heating system includes an electric heating plate 19 and a driving module 21;

[0079] The electric heating plate 19 is arranged below the reaction container 3, and a heat-conducting soft silicone gasket 22 is arranged between the electric heating plate 19 and the reaction container 3. The heat-conducting soft silicone gasket 22 can transfer the electric heating plate 19 to the reaction container 3 to increase the temperature of the mixed liquid inside the reaction container;

[0080] The input end of the driving module 21 is electrically connected to the output end of the switching power supply 13, and the electric heating plate 19 is electrically connected to the output end of the driving module 21, that is, the positive and negative electrodes of the electric heating plate 19 are respectively connected to the positive and negative electrodes of the output end of the driving module 21;

[0081] The signal control end of the driving module 21 is communicatively connected with the first development board 16. The program in the Arduino UNO R3 development board also includes a program for controlling the output of the heating system by the analog port. The Arduino UNO R3 controls the IO port for heating output, so that the temperature can be maintained at the optimum temperature required for the reaction. The temperature is adjusted by changing the preset value. The temperature of the mixed liquid in the reaction container 3 is monitored in real time by the temperature sensor 9. When the monitored temperature is lower than the preset optimum temperature required for the reaction, the first development board 16 controls to start the driving module 21, and the driving module 21 drives the electric heating plate 19 to work for heating, so that the temperature of the mixed liquid in the reaction container 3 is maintained at the optimum temperature required for the reaction. The driving module 21 generally adopts a high-power driving module, and the heating temperature can be up to 110°C.

[0082] like Figure 1-7 As shown, in this example, in order to allow the bacterial liquid and the microplastic liquid to fully mix and react, a stirring system is provided on the reaction container 3;

[0083] The stirring system includes a stirring motor 24. A fixing plate 20 is disposed above the reaction container 3 through a copper column 36. The stirring motor 24 is disposed on the fixing plate 20.

[0084] The output shaft of the stirring motor 24 passes through the fixed plate 20, and the mounting plate 23 is provided with a through hole 35. A stirring rod 25 is provided on the output shaft of the stirring motor 24, and the lower end of the stirring rod 25 passes through the through hole 35 and extends to the middle and lower part of the inner cavity of the reaction container 3. A stirring blade 26 is provided at the lower end of the stirring rod 25.

[0085] The positive pole of the stirring motor 24 is electrically connected to the remaining COM terminal of the four-way relay 15, and the negative pole of the stirring motor 24 is electrically connected to the negative pole of the output terminal of the switching power supply 13. The remaining control port of the four-way relay 15 is connected to a first button switch 27 for controlling the stirring motor 24. The other end of the first button switch 27 is electrically connected to the 5V output port of the DC step-down device 14. The stirring motor 24 is started by the first button switch 27, and the stirring motor 24 drives the stirring rod 25 to rotate, and then drives the stirring blade 26 to rotate, so that the bacterial liquid and the microplastic liquid are fully mixed, thereby ensuring that the bacterial liquid and the microplastic liquid fully undergo biological reaction, so that the microplastics are fully degraded.

[0086] like Figure 8 As shown, in this example, in order to better enable the color recognition sensor 12 to receive the RGB value of the color, a first LED white light fill light 28 is provided just below the bottom of the detection container 11, and the first LED white light fill light 28 is provided on the base 1;

[0087] The power of the first LED white light fill light 28 is 10W. The first LED white light fill light 28 is electrically connected to the 8V output port of the DC buck 14. A second button switch 31 is arranged between the first LED white light fill light 28 and the 8V output port of the DC buck 14. The first LED white light fill light 28 can be turned on or off by the second button switch 31. After testing, the first LED fill light effect is most suitable under this voltage condition. The fill light is provided by the first LED white light fill light 28, so that the color recognition sensor 12 can better receive the RGB value of the color.

[0088] like Figure 8 As shown, in this example, in order to better observe the state of the microplastics in the microplastic liquid container 4, a second LED white light fill light 29 is arranged just below the bottom of the microplastic solution container, and the second LED white light fill light 29 is arranged on the base 1;

[0089] The power of the second LED white light fill light 29 is 10W. The second LED white light fill light 29 is electrically connected to the 8V output port of the DC buck 14. A third button switch 32 is arranged between the second LED white light fill light 29 and the 8V output port of the DC buck 14. The second LED white light fill light 29 can be turned on or off by the third button switch 32. By using the second LED white light fill light 29 for fill light, the state of the microplastics in the microplastic liquid container 4 can be better observed.

[0090] like Figure 3 As shown, in this example, in order to effectively prevent accidental leakage of engineered bacteria in the device and ensure biological safety, an ultraviolet sterilization structure is provided on the base 1;

[0091] The ultraviolet sterilization structure includes an ozone-free ultraviolet lamp 30, which corresponds to the drain pipe 8. The ozone-free ultraviolet lamp 30 is electrically connected to the 12V output port of the DC buck 14. A fourth button switch 33 is arranged between the ozone-free ultraviolet lamp 30 and the 12V output end of the DC buck 14. The ozone-free ultraviolet lamp 30 can be turned on or off by the fourth button switch 33. The ozone-free ultraviolet lamp 30 can kill the engineering bacteria in the drain pipe 8, effectively preventing accidental leakage of the engineering bacteria in the device and ensuring biological safety.

[0092] In this example, as a preference, the first button switch 27, the second button switch 31, the third button switch 32, and the fourth button switch 33 all use button switches of model KAN-28; the DC step-down converter 14 uses a three-way DC step-down converter 14 of model LM2596DC-DC; the temperature sensor 9 uses a temperature sensor 9 of model DS18B20; the color recognition sensor 12 uses a color recognition sensor 12 of model TCS34725; the first solenoid valve 5, the second solenoid valve 6, and the third solenoid valve 7 use solenoid valves of model 2W-025-08.

[0093] Working principle: start and turn on the switch power supply 13, the first development board 16, the second development board 17, and the display screen 18, ensure that the second solenoid valve 6 is in a closed state, add an appropriate amount of liquid sample containing microplastics to the microplastic liquid container 4, ensure that the first solenoid valve 5 is in a closed state, add an appropriate amount of bacterial liquid to the bacterial liquid container 2, and then extract an appropriate amount of liquid sample from the microplastic liquid container 4 and add it to the detection container 11, and add an appropriate amount of colloidal gold test agent to the detection container 11, turn on the first LED white light fill light 28, and measure the RGB value of the color after the microplastic and colloidal gold are combined through the color recognition sensor 12. The first development board 16 collects the data information of the color recognition sensor 12 and transmits it to the second development board 17. The second development board 17 calculates the concentration of the processed microplastic liquid and displays it through the display screen 18; then turn on the first The solenoid valve 5 and the second solenoid valve 6 ensure that the third solenoid valve 7 is in a closed state, so that the liquid sample of microplastics and the bacterial liquid enter the reaction container 3, and then start the stirring motor 24 to stir the mixed liquid to make it fully mixed. The temperature of the liquid in the reaction container 3 is monitored in real time by the temperature sensor 9 to ensure that the temperature is maintained at the optimum temperature required for the reaction. When the monitored temperature is lower than the optimum temperature, the first development board 16 controls the start-up drive module 21 to make the electric heating plate 19 work to maintain its temperature at the optimum temperature required for the reaction. The pH value of the liquid in the reaction container 3 is monitored in real time by the pH sensor 10. When the pH value deviates, the corresponding buffer is added in time to adjust it to keep it within a suitable numerical range. After the reaction time is reached, the third solenoid valve 7 is opened to discharge the reactants in the reaction container 3 for subsequent measurement and analysis.

[0094] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A microplastic detection and degradation device, comprising a base (1), characterized in that: The base (1) is provided with a power supply component, a detection and degradation component, and a control component, and the detection and degradation component and the control component are electrically connected to the power supply component respectively; The detection and degradation component comprises a bacterial liquid container (2), a reaction container (3), and a microplastic liquid container (4); The bacterial liquid container (2) and the reaction container (3) are connected via a first liquid pipe, and the bacterial liquid container (2) is higher than the reaction container (3); a first solenoid valve (5) is provided on the first liquid pipe and is in communication connection with the control component; The microplastic liquid container (4) is connected to the reaction container (3) via a second liquid pipe, and the microplastic liquid container (4) is higher than the reaction container (3); a second solenoid valve (6) is provided on the second liquid pipe and is in communication connection with the control component; The reaction container (3) is provided with a liquid discharge pipe (8), and the liquid discharge pipe (8) is provided with a third solenoid valve (7) and is communicatively connected with the control component; A mounting plate (23) is provided at the upper end of the inner cavity of the reaction container (3), a temperature sensor (9) and a pH value sensor (10) are provided on the mounting plate (23), and a probe of the temperature sensor (9) and a measuring electrode of the pH value sensor (10) are both located in the liquid in the reaction container (3), and the temperature sensor (9) and the pH value sensor (10) are respectively connected to the control component for communication; A detection container (11) is arranged on the outer wall of the microplastic liquid container (4), and a color recognition sensor (12) is arranged on the outer wall of the detection container (11) and is communicatively connected with the control component.

2. A microplastic detection and degradation device according to claim 1, characterized in that: The base (1), bacterial liquid container (2), reaction container (3), microplastic liquid container (4), first liquid tube, second liquid tube, detection container (11), and mounting plate (23) are all made of high-transparency acrylic plate; The liquid discharge pipe (8) is a transparent PU water pipe.

3. A microplastic detection and degradation device according to claim 2, characterized in that: The power supply assembly comprises a switching power supply (13), a DC voltage reducer (14), and a four-way relay (15); The input end of the switching power supply (13) is connected to the mains, and the switching power supply (13) is used to convert 220V alternating current into 24V direct current; The input end of the DC voltage reducer (14) is electrically connected to the output end of the switch power supply (13), and the DC voltage reducer (14) adopts a three-way DC voltage reducer (14) and converts 24V DC power into three-way DC power of 12V, 8V and 5V; The positive and negative electrodes of the 5V output end of the DC voltage reducer (14) are respectively electrically connected to the two pins of the positive and negative electrodes of the input end of the four-way relay (15); three control ports of the four-way relay (15) are respectively connected to three capacitive touch modules (34); the four NO terminals of the four-way relay (15) are all electrically connected to the positive electrode of the output end of the switch power supply (13); the positive electrodes of the first solenoid valve (5), the second solenoid valve (6), and the third solenoid valve (7) are respectively electrically connected to the three COM terminals of the four-way relay (15) connected to the capacitive touch module (34); the negative electrodes of the first solenoid valve (5), the second solenoid valve (6), and the third solenoid valve (7) are all electrically connected to the negative electrode of the output end of the switch power supply (13); and the four NC terminals of the four-way relay (15) are all grounded; The temperature sensor (9), the pH value sensor (10), and the color recognition sensor (12) are electrically connected to the 5V output port of the DC step-down device (14), respectively.

4. A microplastic detection and degradation device according to claim 3, characterized in that: The control component comprises a first development board (16), a second development board (17), and a display screen (18); The first development board (16) is an Arduino UNO R3 development board based on ATmega328p, the second development board (17) is an Arduino Mega2560 development board based on ATmega2560, and the display screen (18) is a 3.5-inch display screen (18) with a model of Arduino Display-Mega2560; The display screen (18) is arranged on the front side of the base (1) and is directly connected to the second development board (17); The first development board (16) and the second development board (17) are connected via serial communication; The first development board (16) and the second development board (17) are electrically connected to the 12V output port of the DC step-down device (14) respectively; The temperature sensor (9), the pH value sensor (10), the color recognition sensor (12), and the driving module (21) are respectively connected to the first development board (16) for communication.

5. A microplastic detection and degradation device according to claim 4, characterized in that: The reaction container (3) is provided with a heating system; The heating system comprises an electric heating plate (19) and a driving module (21); The electric heating plate (19) is arranged below the reaction container (3), and a heat-conducting soft silicone gasket (22) is arranged between the electric heating plate (19) and the reaction container (3); The input end of the driving module (21) is electrically connected to the output end of the switching power supply (13), and the electric heating plate (19) is electrically connected to the output end of the driving module (21); The signal control terminal of the driving module (21) is communicatively connected to the first development board (16).

6. A microplastic detection and degradation device according to claim 5, characterized in that: The reaction container (3) is provided with a stirring system; The stirring system comprises a stirring motor (24); a fixing plate (20) is arranged above the reaction container (3) via a copper column (36); and the stirring motor (24) is arranged on the fixing plate (20); The output shaft of the stirring motor (24) passes through the fixed plate (20), the mounting plate (23) is provided with a through hole (35), a stirring rod (25) is provided on the output shaft of the stirring motor (24), and the lower end of the stirring rod (25) passes through the through hole (35) and extends to the middle and lower part of the inner cavity of the reaction container (3), and a stirring blade (26) is provided at the lower end of the stirring rod (25); The positive pole of the stirring motor (24) is electrically connected to the remaining COM terminal of the four-way relay (15), the negative pole of the stirring motor (24) is electrically connected to the negative pole of the output terminal of the switching power supply (13), and the remaining control port of the four-way relay (15) is connected to a first button switch (27) for controlling the stirring motor (24), and the other end of the first button switch (27) is electrically connected to the 5V output port of the DC buck (14).

7. A microplastic detection and degradation device according to claim 6, characterized in that: A first LED white light fill lamp (28) is arranged below the bottom of the detection container (11); The power of the first LED white light fill light (28) is 10W, the first LED white light fill light (28) is electrically connected to the 8V output port of the DC step-down device (14), and a second button switch (31) is provided between the first LED white light fill light (28) and the 8V output port of the DC step-down device (14).

8. A microplastic detection and degradation device according to claim 7, characterized in that: A second LED white light fill lamp (29) is arranged below the bottom of the microplastic solution container; The power of the second LED white light fill light (29) is 10W, the second LED white light fill light (29) is electrically connected to the 8V output port of the DC step-down device (14), and a third button switch (32) is provided between the second LED white light fill light (29) and the 8V output port of the DC step-down device (14).

9. A microplastic detection and degradation device according to claim 8, characterized in that: The base (1) is provided with an ultraviolet sterilization structure; The ultraviolet sterilization structure comprises an ozone-free ultraviolet lamp (30), the ozone-free ultraviolet lamp (30) corresponds to the drain pipe (8), the ozone-free ultraviolet lamp (30) is electrically connected to a 12V output port of a DC step-down device (14), and a fourth button switch (33) is provided between the ozone-free ultraviolet lamp (30) and the 12V output end of the DC step-down device (14).

10. A microplastic detection and degradation device according to claim 9, characterized in that: The first button switch (27), the second button switch (31), the third button switch (32), and the fourth button switch (33) are all button switches of model KAN-28; the DC voltage reducer (14) is a DC-DC three-way DC voltage reducer (14) of model LM2596; the temperature sensor (9) is a temperature sensor (9) of model DS18B20; the color recognition sensor (12) is a color recognition sensor (12) of model TCS34725; and the first solenoid valve (5), the second solenoid valve (6), and the third solenoid valve (7) are solenoid valves of model 2W-025-08.

Images