Solar energy driven electrochemical biological coupling oily sludge treatment and carbon emission reduction device

Abstract

The utility model relates to a solar drive's electrochemical biological coupling oily sludge treatment and carbon emission reduction device, relates to environmental science and engineering technical field. Traditional bioelectrochemical device, and the processing effect is poor, and the existing carbon treatment mode indirectly increases carbon emission. The upper cover, rectangular groove and percolate collection groove are buckled together from top to bottom, the bottom surface of rectangular groove is equipped with multiple water seepage holes, and a water permeable layer is arranged at each water seepage hole, a through hole is formed in the upper cover, the through hole is connected with pipeline, and the pipeline is used for putting in voltage-resistant bacterial agent and nutrient salt mixture, solar power supply unit supplies power for multiple rows of positive electrode and multiple rows of negative electrode, electrode adjusting mechanism is used for adjusting the spacing between multiple rows of positive electrode and multiple rows of negative electrode, thereby changing the electric field intensity, promoting voltage-resistant bacterial agent nutrient salt to treat oily sludge, and setting reaction solution in carbon emission reduction treatment box, absorbing carbon dioxide, and the generated gas is discharged to the outside. The technology is used for treating oily sludge and meets the discharge standard of three ten thousandth.

Description

Technical Field

[0001] This utility model relates to the field of environmental science and engineering technology, specifically to an oily sludge treatment device. Background Technology

[0002] Oily sludge is a major hazardous waste generated during oilfield development, and its harmless treatment is a challenging issue in the environmental protection field. Traditional methods for treating oily sludge and purifying it include physical centrifugation, pyrolysis washing, and bioelectrochemical methods.

[0003] However, for severely emulsified or extremely fine oily sludge, the centrifugal force of physical centrifugation is insufficient to completely destroy stable emulsified oil droplets, resulting in a high residual oil content in the treated sludge, which fails to meet environmental emission standards (oil content of treated sludge ≤3%). Therefore, using physical centrifugation to treat oily sludge is incomplete, and the equipment is prone to wear and tear with a high failure rate.

[0004] Pyrolysis washing methods require a large amount of heat energy, and the equipment is complex and costly.

[0005] Existing bioelectrochemical methods use bioelectrochemical devices, which have low operating costs, but the electrode spacing and electric field strength are fixed, resulting in low treatment efficiency and poor treatment effect for oily sludge with high viscosity.

[0006] Furthermore, traditional processing devices all rely on the power grid for power, which has drawbacks such as high energy consumption, high operating costs, and a large carbon footprint.

[0007] In addition, carbon dioxide is generated during the treatment of oily sludge, and existing methods for treating carbon dioxide are complex and energy-intensive, which indirectly increases carbon emissions. Utility Model Content

[0008] The purpose of this invention is to solve the problems of traditional bioelectrochemical devices, which have fixed electrode spacing and electric field strength, resulting in low treatment efficiency and poor treatment effect for oily sludge with high viscosity. Existing carbon dioxide treatment processes are complex, energy-intensive, and indirectly increase carbon emissions. This invention proposes a solar-driven electrochemical-biocoupled oily sludge treatment and carbon emission reduction device.

[0009] A solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device, the device includes a top cover, a rectangular tank and a leachate collection tank that are snapped together from top to bottom, and also includes a microbial agent dosing pipe, a drain pipe connected to the leachate collection tank, a solar power supply unit, a carbon emission reduction treatment box, a gas pipeline, multiple rows of positive electrodes, multiple rows of negative electrodes and an electrode adjustment mechanism arranged inside the rectangular tank.

[0010] Multiple seepage holes are opened on the bottom surface of the rectangular groove, and a permeable layer is set at each seepage hole;

[0011] A through hole is provided on the top cover, which is connected to the microbial agent injection pipe. The microbial agent injection pipe is used to inject a mixture of voltage-resistant microbial agent and nutrient salts.

[0012] A solar power unit is used to supply power to multiple rows of positive electrodes and multiple rows of negative electrodes;

[0013] The electrode adjustment mechanism is used to adjust the spacing between multiple rows of positive electrodes and multiple rows of negative electrodes, thereby changing the electric field strength, promoting the decomposition of petroleum hydrocarbons in the oily sludge loaded in the rectangular tank by the voltage-resistant bacterial agent and removing heavy metals from the oily sludge, and promoting the degradation of nutrients in the microorganisms in the oily sludge.

[0014] A through hole is opened on the side wall of the top cover, which connects to one end of a gas pipeline, and the other end of the gas pipeline connects to a carbon emission reduction treatment box. The carbon emission reduction treatment box contains a reaction solution and is used to absorb the carbon dioxide generated in the rectangular tank and generate gas that is discharged from the carbon emission reduction treatment box.

[0015] Preferably, the electrode adjustment mechanism includes a rectangular housing, a variable pitch screw, a fixed shaft, multiple variable pitch rods, multiple locking blocks, and a motor;

[0016] A rectangular outer shell is embedded in the width direction of the bottom surface of a rectangular groove. The variable pitch screw and the fixed shaft are arranged parallel inside the rectangular outer shell. The two ends of the variable pitch screw are rotatably connected to the rectangular outer shell, and the two ends of the fixed shaft are fixedly connected to the rectangular outer shell. Multiple snap-fit ​​blocks are equally spaced on the fixed shaft and are snapped into the threads of the variable pitch screw in sequence. Each snap-fit ​​block is connected to one variable pitch rod, forming each integral structure.

[0017] The rectangular groove has symmetrical guide grooves on its two opposite inner walls. The two ends of each pitch rod are slidably connected in the two guide grooves. Each pitch rod is vertically connected to a row of positive or negative electrodes. Multiple rows of positive and negative electrodes are arranged alternately at equal intervals along the width of the rectangular groove. Multiple electrodes on each row of positive and negative electrodes are arranged at equal intervals.

[0018] Preferably, the device further includes a vibrator;

[0019] The vibrator is installed on the outer wall of the pipe.

[0020] Preferably, the device further includes a blower and a measurement and control device;

[0021] The monitoring and control device includes a carbon dioxide sensor, valves, and an intelligent controller;

[0022] The blower is installed on the gas pipeline; a carbon dioxide sensor and a valve are installed sequentially at the outlet of the carbon emission reduction treatment box;

[0023] A carbon dioxide sensor is used to detect the concentration of carbon dioxide in the gas output from the carbon emission reduction treatment box and transmit the data to the intelligent controller.

[0024] The intelligent controller compares the carbon dioxide concentration with a preset concentration. When the carbon dioxide concentration is lower than or equal to the preset concentration, it controls the valve to open and controls the discharge of gas from the carbon emission reduction treatment box. When the carbon dioxide concentration is higher than the preset concentration, it controls the gas from the carbon emission reduction treatment box to re-enter the carbon emission reduction treatment box.

[0025] Preferably, the voltage-resistant bacterial agent includes Pseudomonas, Acinetobacter, and Bacillus;

[0026] Preferably, the nutrients include phosphates, nitrates, sulfates, urea, organic matter, petroleum products, and organic carbon.

[0027] Preferably, the through hole on the top cover is an umbrella-shaped hole.

[0028] Preferably, the device further includes a water supply pipe, a water supply end, a water pump, a humidity sensor, and a spray mechanism;

[0029] A spraying mechanism is installed on the inner bottom surface of the top cover. The spraying mechanism is connected to the outlet of the water supply pipe through the through hole on the top cover. The inlet of the water supply pipe is connected to the water supply end, and a water pump is installed at the inlet of the water supply pipe.

[0030] A humidity sensor is installed inside a rectangular trough to detect the humidity of the oily sludge and transmit the data to an intelligent controller. The intelligent controller compares the humidity with a preset humidity range. When the humidity is lower than the preset range, it controls the water pump to pump water from the water supply end into the oily sludge through the spraying mechanism.

[0031] Preferably, the preset humidity range is 50% to 80%.

[0032] Preferably, the device further includes an oil level sensor and a heavy metal concentration sensor;

[0033] Both the oil level sensor and the heavy metal concentration sensor are installed inside the rectangular tank to detect the oil content and heavy metal concentration in the oily sludge, respectively, and transmit the data to the intelligent controller. The intelligent controller then replenishes the liquid voltage-resistant bacterial agent or the voltage-resistant bacterial agent and nutrient salt dosage based on the oil content and heavy metal concentration.

[0034] The beneficial effects of this utility model are:

[0035] This invention utilizes an electrode adjustment mechanism to adjust the spacing between multiple rows of positive and negative electrodes based on the viscosity of the oily sludge to be treated. When the viscosity of the oily sludge is high, the electrode spacing is reduced to increase the electric field strength, thereby accelerating the decomposition of petroleum hydrocarbons in the oily sludge loaded in the rectangular tank by the voltage-resistant bacterial agent and removing heavy metals from the oily sludge. It also promotes the degradation of microorganisms in the oily sludge by nutrients, improving the efficiency and effectiveness of sludge treatment. Therefore, the electrode adjustment mechanism is suitable for the efficient treatment of oily sludge of different viscosities.

[0036] This invention uses solar power as the electrode, which is independent of the power grid and has low operating costs. It creates an electric field in the oily sludge, and combined with the applied electro-resistant bacterial agent and nutrient salt mixture, it effectively removes water and heavy metals from the oily sludge, thus purifying the oily sludge.

[0037] This utility model device has a simple structure; by adding a mixture of electrolytic bacteria and nutrients, and adjusting the electric field intensity according to the different viscosities of oily sludge, it efficiently degrades petroleum pollutants, enabling the oily sludge to achieve the best purification effect and realize the harmless and volume reduction treatment of oily sludge; the oil content of the treated sludge is ≤3%. Therefore, this utility model achieves the best purification effect with a simple structure, good treatment effect, high treatment efficiency, stable performance, low carbon and environmental protection, and is suitable for the treatment of oily sludge in oil fields and refining industries.

[0038] This invention involves adding a reaction solution, such as sodium hydroxide solution, into the carbon emission reduction treatment tank to absorb carbon dioxide. Therefore, the carbon emission reduction treatment method of this invention is simple, has a good treatment effect, and is of great significance for carbon emission reduction. Attached Figure Description

[0039] Figure 1 A schematic diagram of the disassembly of a solar-driven electrochemical-biological coupled oily sludge treatment device;

[0040] Figure 2 This is a schematic diagram of the carbon dioxide treatment principle.

[0041] Figure 3 This is a schematic diagram of the electrode adjustment mechanism;

[0042] Figure 4 A schematic diagram illustrating the principle of a solar power unit supplying power to the electrodes;

[0043] Figure 5 This is a schematic diagram of the principle of a solar power supply unit. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the present invention.

[0046] Example:

[0047] A solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device includes an upper cover 1, a rectangular trough 2 and a leachate collection trough 5 that are sequentially fastened together from top to bottom, as well as a microbial agent dosing pipe 7, a drain pipe 6 connected to the leachate collection trough 5, a solar power supply unit, a carbon emission reduction treatment box 10, a gas pipe 11, multiple rows of positive electrodes 8 and multiple rows of negative electrodes 9 arranged inside the rectangular trough 2, and an electrode adjustment mechanism 3.

[0048] Multiple seepage holes are opened on the bottom surface of the rectangular groove 2, and a permeable layer 4 is set at each seepage hole;

[0049] A through hole is provided on the upper cover 1, which is connected to the microbial agent delivery pipe 7. The microbial agent delivery pipe 7 is used to deliver a mixture of voltage-resistant microbial agent and nutrient salts.

[0050] A solar power unit is used to supply power to the multi-row positive electrodes 8 and the multi-row negative electrodes 9;

[0051] The electrode adjustment mechanism 3 is used to adjust the spacing between the multiple rows of positive electrodes 8 and the multiple rows of negative electrodes 9, thereby changing the electric field strength, promoting the decomposition of petroleum hydrocarbons in the oily sludge loaded in the rectangular tank 2 by the voltage-resistant bacterial agent and removing heavy metals from the oily sludge, and promoting the degradation of nutrients in the microorganisms in the oily sludge.

[0052] A through hole is opened on the side wall of the top cover 1, which is connected to one end of the gas pipe 11, and the other end of the gas pipe 11 is connected to the carbon emission reduction treatment box 10. The carbon emission reduction treatment box 10 contains a reaction solution and is used to absorb the carbon dioxide generated in the rectangular tank 2 and generate gas that is discharged from the carbon emission reduction treatment box 10.

[0053] Specifically, such as Figure 4 As shown, the solar power supply unit includes solar photovoltaic panels, an energy storage module, and a DC regulated power supply.

[0054] Solar photovoltaic panels: These are polycrystalline or monocrystalline silicon photovoltaic panels installed on top of or around the device in open areas to convert solar energy into electrical energy. The electrical energy is then passed through an energy storage module and a DC regulated power supply to power the electrodes.

[0055] Energy storage module: including battery pack and charge / discharge management system, stores the electrical energy generated by photovoltaic panels and provides a stable DC power supply for electrochemical unit.

[0056] Electrodes: Steel pipes, iron pipes or graphene electrodes are used. An electric field is formed by a DC regulated power supply (powered by an energy storage module). The oxidation-reduction reaction decomposes petroleum hydrocarbons, and the electrodialysis removes moisture and heavy metals.

[0057] The electrodes are all made of steel pipe, iron pipe or graphene electrode.

[0058] The inner coating of rectangular tank 1 is polytetrafluoroethylene coating, which solves the problem of equipment wear caused by corrosive substances such as hydrogen sulfide in oily sludge, and extends the service life from the original 3 years to more than 5 years.

[0059] Further defined, the electrode adjustment mechanism 3 includes a rectangular housing 3-1, a variable pitch screw 3-2, a fixed shaft 3-3, multiple variable pitch rods 3-4, multiple locking blocks 3-5, and a motor;

[0060] A rectangular outer shell 3-1 is embedded in the width direction of the bottom surface of a rectangular groove 2. A variable pitch screw 3-2 and a fixed shaft 3-3 are arranged parallel inside the rectangular outer shell 3-1. The two ends of the variable pitch screw 3-2 are rotatably connected to the rectangular outer shell 3-1, and the two ends of the fixed shaft 3-3 are fixedly connected to the rectangular outer shell 3-1. Multiple snap-fit ​​blocks 3-5 are equally spaced on the fixed shaft 3-3 and are sequentially snapped into the threads of the variable pitch screw 3-2. Each snap-fit ​​block 3-5 is connected to a variable pitch rod 3-4, forming a single integrated structure.

[0061] Guide grooves are symmetrically opened on the two opposite inner walls of the rectangular groove 2. The two ends of each pitch rod 3-4 are slidably connected in the two guide grooves. A row of positive electrodes 8 or negative electrodes 9 are vertically connected to each pitch rod 3-4. Multiple rows of positive electrodes 8 and multiple rows of negative electrodes 9 are arranged alternately at equal intervals along the width direction of the rectangular groove 2. Multiple electrodes on each row of positive electrodes 8 and each row of negative electrodes 9 are arranged at equal intervals.

[0062] Specifically, the number of pitch rods and the number of positive and negative electrodes per row can be reasonably set according to the size of the rectangular groove.

[0063] like Figure 2As shown, when the motor is rotating forward, the pitch screw 3-2 rotates inward, and each thread on the pitch screw 3-2 rotates towards the center of the pitch rod. The locking block also moves closer to the center of the pitch screw 3-2 along the corresponding thread, thus reducing the distance between the electrodes. When the motor is rotating in reverse, the pitch screw 3-2 rotates outward, and each thread on the pitch screw 3-2 rotates away from the center of the pitch rod. The locking block also moves away from the center of the pitch screw 3-2 along the corresponding thread, thus increasing the distance between the electrodes.

[0064] Furthermore, the device also includes a vibrator;

[0065] The vibrator is installed on the outer wall of pipe 7.

[0066] Specifically, the vibrator is used to discharge the mixture of voltage-resistant bacteria and nutrients adhering to the pipe wall into the oily sludge, so that the mixture of voltage-resistant bacteria and nutrients is completely discharged.

[0067] Furthermore, the device also includes a blower 13 and a measurement and control device 12;

[0068] The monitoring and control device includes a carbon dioxide sensor 12-1, a valve 12-2, and an intelligent controller;

[0069] Blower 13 is installed on gas pipeline 11; carbon dioxide sensor 12-1 and valve 12-2 are installed in sequence at the outlet of carbon emission reduction treatment box 10;

[0070] Carbon dioxide sensor 12-1 is used to detect the carbon dioxide concentration in the output gas of carbon emission reduction treatment box 10 and transmit it to the intelligent controller.

[0071] The intelligent controller compares the carbon dioxide concentration with a preset concentration. When the carbon dioxide concentration is lower than or equal to the preset concentration, the control valve 12-2 is opened to control the discharge of the gas output from the carbon emission reduction treatment box 10. When the carbon dioxide concentration is higher than the preset concentration, the control valve controls the gas output from the carbon emission reduction treatment box 10 to re-enter the carbon emission reduction treatment box 10.

[0072] Specifically, a carbon dioxide sensor 12-1 is used to detect whether the concentration of carbon dioxide exceeds the standard and whether it can be directly emitted to the outside.

[0073] This embodiment also includes a current sensor, a voltage sensor, and a moisture content sensor, which respectively collect the current, voltage, and moisture content of the oily sludge output by the solar power unit. The intelligent controller records this voltage and current for subsequent analysis. At the same time, when the voltage and current deviate from the preset value, the current and voltage are adjusted. The intelligent controller analyzes the treatment process of the oily sludge based on the real-time recorded moisture content.

[0074] Intelligent controller: integrates MPPT (maximum power point tracking) technology, automatically adjusts the output power of photovoltaic panels, optimizes energy utilization efficiency, and has overcharge and over-discharge protection functions.

[0075] Further specifying, voltage-resistant bacterial agents include Pseudomonas, Acinetobacter, and Bacillus;

[0076] Nutrients include phosphates, nitrates, sulfates, urea, organic matter, petroleum products, and organic carbon.

[0077] Specifically, 1 kg to 5 kg of voltage-resistant bacterial agent and nutrient salts at a concentration of 5 to 10 g / L are added to each ton of oily sludge.

[0078] Voltage-resistant bacterial agents can rapidly degrade petroleum pollutants and remove heavy metals under microcurrent conditions. They support solid powder or liquid addition and can shorten the treatment cycle through multiple bio-enhancement processes.

[0079] The nutrient salt addition ratio is C:N:P:S=40:10:1:2, where C refers to organic matter, petroleum and organic carbon in oily sludge; N refers to nitrate and urea; P refers to phosphate; and S refers to sulfate.

[0080] Furthermore, the through hole on the top cover 1 is an umbrella-shaped hole.

[0081] Specifically, the umbrella-shaped hole has a larger diameter at the bottom end of the top cover than at the top end; this facilitates the uniform addition of voltage-resistant bacterial agents and nutrients into the oily sludge.

[0082] Furthermore, the device also includes a water supply pipe, a water supply end, a water pump, a humidity sensor, and a spray mechanism;

[0083] A spraying mechanism is installed on the inner bottom surface of the upper cover 1. The spraying mechanism is connected to the outlet of the water supply pipe through the through hole on the upper cover 1. The inlet of the water supply pipe is connected to the water supply end. A water pump is installed at the inlet of the water supply pipe.

[0084] A humidity sensor is installed inside rectangular trough 2 to detect the humidity of the oily sludge and transmit the data to the intelligent controller. The intelligent controller compares this humidity level with a preset humidity range. When the humidity level is lower than the preset range, it controls the water pump to operate, pumping water from the supply end into the oily sludge through the spray mechanism. The preset humidity range is 50% to 80%.

[0085] Furthermore, the device also includes an oil level sensor and a heavy metal concentration sensor;

[0086] Both the oil level sensor and the heavy metal concentration sensor are installed inside the rectangular tank 2 to detect the oil content and heavy metal concentration in the oily sludge, respectively, and transmit the data to the intelligent controller. The intelligent controller then replenishes the liquid voltage-resistant bacterial agent or the voltage-resistant bacterial agent and nutrient salt dosage based on the oil content and heavy metal concentration.

[0087] Specifically, the pretreated sludge is fed into a rectangular tank, the solar power system is turned on, the intelligent controller is adjusted to stabilize the current at 10~16A and the voltage at 2~8V / cm, and the spray system is controlled by a humidity sensor to maintain the sludge humidity at 50%~80%.

[0088] The oil content and heavy metal concentration collected by the intelligent controller can be compared with the internally preset oil content and heavy metal concentration respectively. When the oil content is higher than the first preset oil content or the heavy metal concentration is higher than the first preset heavy metal concentration, the agent is replenished according to the first preset electrolytic bacteria concentration and nutrient salt concentration. When the oil content is higher than the second preset oil content or the heavy metal concentration is higher than the second preset heavy metal concentration, the agent is replenished according to the second preset electrolytic bacteria concentration and nutrient salt concentration.

[0089] Working principle:

[0090] Before being placed into the rectangular trough, the oily sludge needs to be crushed by an agricultural straw crusher and mixer to a particle size of ≤5mm, and impurities such as stones and plastics need to be removed. Based on the viscosity of the treated oily sludge, the spacing between each row of positive electrodes and the adjacent row of negative electrodes is adjusted using the electrode adjustment mechanism within the rectangular trough. After adjustment, the treated oily sludge is loaded into the rectangular trough, and the power cord is connected to the multiple rows of positive and negative electrodes. When energized, an electric field is generated within the oily sludge. A mixture of voltage-resistant bacterial agents and nutrients is then added to the oily sludge. Sensors are used to monitor the parameters within the oily sludge in real time, and voltage-resistant bacterial agents and nutrients are replenished accordingly to achieve the best purification effect. The treatment cycle is 7-15 days. After testing and confirming that the oil content is ≤3‰ and heavy metals meet standards, the sludge is discharged through the outlet and used for farmland soil improvement or roadbed filling.

[0091] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device, characterized in that, The device includes a top cover (1), a rectangular trough (2) and a leachate collection trough (5) that are snapped together from top to bottom, as well as a microbial agent injection pipe (7), a drain pipe (6) connected to the leachate collection trough (5), a solar power supply unit, a carbon emission reduction treatment box (10), a gas pipe (11), multiple rows of positive electrodes (8), multiple rows of negative electrodes (9) and an electrode adjustment mechanism (3) set inside the rectangular trough (2); Multiple seepage holes are opened on the bottom surface of the rectangular groove (2), and a permeable layer (4) is set at each seepage hole. A through hole is provided on the top cover (1), which is connected to the agent delivery pipe (7). The agent delivery pipe (7) is used to deliver a mixture of voltage-resistant agent and nutrient salts. A solar power supply unit is used to supply power to multiple rows of positive electrodes (8) and multiple rows of negative electrodes (9); The electrode adjustment mechanism (3) is used to adjust the spacing between the multi-row positive electrodes (8) and the multi-row negative electrodes (9), thereby changing the electric field strength, promoting the decomposition of petroleum hydrocarbons in the oily sludge loaded in the rectangular tank (2) by the voltage-resistant bacterial agent and removing heavy metals in the oily sludge, and promoting the degradation of nutrients in the microorganisms in the oily sludge. A through hole is opened on the side wall of the top cover (1), which is connected to one end of the gas pipe (11), and the other end of the gas pipe (11) is connected to the carbon emission reduction treatment box (10). The carbon emission reduction treatment box (10) contains a reaction solution and is used to absorb the carbon dioxide generated in the rectangular tank (2) and generate gas to be discharged from the carbon emission reduction treatment box (10).

2. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 1, characterized in that, The electrode adjustment mechanism (3) includes a rectangular housing (3-1), a variable pitch screw (3-2), a fixed shaft (3-3), multiple variable pitch rods (3-4), multiple locking blocks (3-5), and a motor; A rectangular shell (3-1) is embedded in the width direction of the bottom surface of a rectangular groove (2). A variable pitch screw (3-2) and a fixed shaft (3-3) are arranged parallel inside the rectangular shell (3-1). The two ends of the variable pitch screw (3-2) are rotatably connected to the rectangular shell (3-1), and the two ends of the fixed shaft (3-3) are fixedly connected to the rectangular shell (3-1). Multiple snap-fit ​​blocks (3-5) are equally spaced on the fixed shaft (3-3) and are snapped into the threads of the variable pitch screw (3-2) in sequence. Each snap-fit ​​block (3-5) is connected to a variable pitch rod (3-4) to form a single integrated structure. Guide grooves are symmetrically opened on the two opposite inner walls of the rectangular groove (2), and the two ends of each pitch rod (3-4) are slidably connected in the two guide grooves; a row of positive electrodes (8) or negative electrodes (9) are vertically connected on each pitch rod (3-4), and multiple rows of positive electrodes (8) and multiple rows of negative electrodes (9) are arranged alternately at equal intervals along the width direction of the rectangular groove (2), and multiple electrodes on each row of positive electrodes (8) and each row of negative electrodes (9) are arranged at equal intervals.

3. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 1, characterized in that, The device also includes a vibrator; The vibrator is installed on the outer wall of the pipe (7).

4. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 1, characterized in that, The device also includes a blower (13) and a measurement and control device (12); The monitoring and control device includes a carbon dioxide sensor (12-1), a valve (12-2), and an intelligent controller; The blower (13) is installed on the gas pipeline (11); a carbon dioxide sensor (12-1) and a valve (12-2) are installed in sequence at the outlet of the carbon emission reduction treatment box (10). A carbon dioxide sensor (12-1) is used to detect the concentration of carbon dioxide in the output gas of the carbon emission reduction treatment box (10) and transmit it to the intelligent controller; The intelligent controller is used to compare the carbon dioxide concentration with the preset concentration. When the carbon dioxide concentration is lower than or equal to the preset concentration, the control valve (12-2) is opened to control the discharge of the gas output from the carbon emission reduction treatment box (10). When the carbon dioxide concentration is higher than the preset concentration, the control gas output from the carbon emission reduction treatment box (10) is re-entered into the carbon emission reduction treatment box (10).

5. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 1, characterized in that, Voltage-resistant bacterial agents include Pseudomonas, Acinetobacter, and Bacillus.

6. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 4, characterized in that, Nutrients include phosphates, nitrates, sulfates, urea, organic matter, petroleum products, and organic carbon.

7. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 1, characterized in that, The through hole on the top cover (1) is an umbrella-shaped hole.

8. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 1, characterized in that, The device also includes a water supply pipe, a water supply end, a water pump, a humidity sensor, and a spray mechanism; A spraying mechanism is provided on the inner bottom surface of the top cover (1). The spraying mechanism is connected to the outlet of the water supply pipe through the through hole on the top cover (1). The inlet of the water supply pipe is connected to the water supply end. A water pump is provided at the inlet of the water supply pipe. A humidity sensor is installed inside a rectangular groove (2) to detect the humidity of the oily sludge and transmit it to the intelligent controller. The intelligent controller compares the humidity with a preset humidity range. When the humidity is lower than the preset humidity range, it controls the water pump to work and pumps the water from the water supply end into the oily sludge through the spraying mechanism.

9. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 8, characterized in that, The preset humidity range is 50%~80%.

10. The solar-driven electrochemical-biological coupled oily sludge treatment and carbon emission reduction device according to claim 1, characterized in that, The device also includes an oil level sensor and a heavy metal concentration sensor; The oil content sensor and the heavy metal concentration sensor are both installed inside the rectangular tank (2) to detect the oil content and heavy metal concentration in the oily sludge, respectively, and transmit them to the intelligent controller. The intelligent controller replenishes liquid voltage-resistant bacteria or voltage-resistant bacteria and nutrient salts according to the oil content and heavy metal concentration.

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