An environmentally friendly sewage treatment system

Abstract

The present application relates to a kind of environmental protection sewage treatment system, belong to sewage treatment technical field;The environmental protection sewage treatment system includes sewage tank, rack, filter device, drive device, mixing device, sewage system, the sewage tank is installed on rack, filter device is installed in sewage tank, drive device for driving sewage tank is installed on rack, mud water in sewage is separated by driving sewage tank, separated sludge is transported to mixing device by belt conveyor and is processed, after sewage is collected, it is transported to sewage system and is treated;The present application can separate water and sludge in sewage, after separation, sludge and moisture are separately treated, separated sludge is transported to mixing device and is processed, after sewage is collected, it is transported to sewage system and is treated, water and sludge can be treated and recycled, waste is turned into treasure, avoid environmental pollution, at the same time, it is in line with the environmental protection concept of waste recycling.

Description

Technical Field

[0001] This invention relates to an environmentally friendly wastewater treatment system, belonging to the field of wastewater treatment technology. Background Technology

[0002] Sludge from domestic and industrial processes contains a significant amount of water, which would be a huge waste if left untreated. Therefore, sludge treatment equipment has emerged to extract the water from the sludge, turning waste into a valuable resource, thus conserving water and protecting the environment. Furthermore, sludge mainly contains microorganisms, adsorbed organic matter, and metabolic products of these microorganisms. However, directly using the remaining activated sludge after wastewater treatment as fertilizer is ineffective and cannot efficiently provide nutrients to crops. Therefore, a treatment system needs to be designed to address these existing problems. Summary of the Invention

[0003] In order to overcome the problems existing in the background technology, the present invention can separate water and sludge in sewage. After separation, the sludge and water are treated separately. The separated sludge is transported to a mixing device for processing, and the sewage is collected and transported to the sewage system for treatment. Both water and sludge can be treated and recycled, turning waste into treasure, avoiding environmental pollution, and conforming to the environmental protection concept of waste recycling.

[0004] To overcome the problems existing in the background art and to solve the above problems, the present invention is achieved through the following technical solution:

[0005] The environmentally friendly wastewater treatment system includes a wastewater tank, a frame, a filter device, a drive device, a mixing device, and a wastewater system. The wastewater tank is installed on the frame, and a filter device is installed inside the wastewater tank. The drive device is installed on the frame to drive the wastewater tank, thereby separating the mud and water in the wastewater. The separated sludge is transported to the mixing device for processing via a belt conveyor. The wastewater is collected and then transported to the wastewater system for treatment.

[0006] Preferably, the top of the sewage tank is provided with a through hole, and a bearing is installed at the through hole. The inlet pipe connecting the mud pump extends along the inner ring of the bearing into the sewage tank. A water storage gap for storing sewage is provided between the inner wall of the sewage tank and the filter device. A liquid outlet pipe for installing a solenoid valve is installed on the side wall of the sewage tank. The bottom of the sewage tank is open, and a closing device for opening or closing the opening is installed at the opening. The filter device includes a filter element, a filter cloth, and a filter media. The filter element is a ring frame structure with water-permeable mesh holes evenly distributed on its surface. The surface of the filter element is covered with filter cloth, and the inside of the filter element is filled with filter media. The closing device includes a base plate, a rotating shaft, a gear drive mechanism, and a base plate drive motor. The rotating shaft is installed at the bottom of the sewage tank through a bearing, and the base plate is fixedly connected to the rotating shaft. The rotating shaft is connected to the base plate drive motor through a gear transmission mechanism.

[0007] Preferably, the driving device includes a ring rack, a housing drive motor, a slewing bearing, and a drive gear. The sewage tank is provided with a ring rack, the frame is equipped with a slewing bearing for supporting the ring rack, the housing drive motor is installed on the frame, and the housing drive motor is equipped with a drive gear that meshes with the ring rack.

[0008] Preferably, the wastewater tank is equipped with a sludge scraping device, which includes an annular scraper and a cylinder. The cylinder is mounted on the top of the wastewater tank via a bracket, and the end of the cylinder is connected to the annular scraper disposed inside the wastewater tank. The side of the annular scraper is attached to the inner wall of the filter device.

[0009] Preferably, the mixing device includes a mixing tank, a feeding drive motor, a feeding screw, a bevel gear drive mechanism, a material cylinder, a second rotating shaft, a gear transmission mechanism, a stirring screw, an electric telescopic rod, a baffle plate, and a vertical vibrating feeder. The top of the mixing tank is equipped with the feeding drive motor, the material cylinder, the vertical vibrating feeder, and the feeding hopper. The material cylinder contains a feeding screw connected to the motor, and the top of the material cylinder is connected to the hopper. The top of the mixing tank is also equipped with a second rotating shaft, the top of which is connected to the feeding screw via the bevel gear drive mechanism. The second rotating shaft is connected to the mixing screw installed inside the mixing box via a gear transmission mechanism. The material cylinder is connected to the inlet of the direct vibrating feeder. The outlet of the direct vibrating feeder is equipped with an electric telescopic rod installed on the bracket. The end of the electric telescopic rod is connected to a baffle plate. The baffle plate has a long strip-shaped discharge gap in the vertical direction. The size of the discharge gap is controlled by moving the baffle plate up and down through the electric telescopic rod. The outlet of the direct vibrating feeder is equipped with a feed hopper that communicates with the mixing box.

[0010] Preferably, the wastewater system includes an activated carbon filter, an ultrafiltration water purifier, a reverse osmosis filter, an ultraviolet sterilizer, a pressure storage tank, and a second booster pump. The inlet of the activated carbon filter is connected to a wastewater collection tank via a pipe and a pump body. The outlet of the activated carbon filter is connected to the inlet of the ultrafiltration water purifier via a pipe equipped with a solenoid valve. The outlet of the ultrafiltration water purifier is connected to the inlet of the second booster pump. The outlet of the second booster pump is connected to the inlet of the reverse osmosis filter via a pipe equipped with a check valve. The outlet of the reverse osmosis filter is connected to the inlet of the ultraviolet sterilizer via a pipe equipped with a solenoid valve. The outlet of the ultraviolet sterilizer is connected to the pressure storage tank via a pipe equipped with a solenoid valve.

[0011] Preferably, a water quality testing device is installed inside the pressure storage tank, and the water quality testing device includes an internally installed pH sensor, turbidity sensor, dissolved oxygen sensor, water temperature sensor and conductivity sensor.

[0012] Preferably, the solution mixing device includes a solution mixing tank, a reversing valve, a high-pressure plunger pump, and a water pump. At least two solution mixing tanks are provided for storing different solutions. The inlet of the high-pressure plunger pump is connected to the outlet of the reversing valve through a pipe. The inlet of the reversing valve is connected to the solution mixing tank through a pipe that extends to the solution mixing tank and is connected to the water pump installed in the solution mixing tank.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention can separate water and sludge from sewage. After separation, the sludge and water are treated separately. The separated sludge is transported to a mixing device for processing, while the sewage is collected and transported to a sewage system for treatment. Both water and sludge can be treated and recycled, turning waste into treasure, avoiding environmental pollution, and conforming to the environmental protection concept of waste recycling. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the wastewater tank structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the mixing device of the present invention;

[0018] Figure 4 This is a schematic diagram of the closing device structure of the present invention;

[0019] Figure 5 This is a schematic diagram of the wastewater system structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the liquid preparation device of the present invention;

[0021] Figure 7 This is a front view of the direct vibration feeder of the present invention;

[0022] Figure 8 This is a side view of the linear vibrating feeder of the present invention;

[0023] Figure 9 This is a schematic diagram of the filter device structure of the present invention;

[0024] Figure 10 This is a module diagram of the water quality testing device of the present invention;

[0025] Figure 11 This is a schematic diagram of the wireless terminal module of the present invention.

[0026] The diagram is labeled as follows: 1-Sewage tank, 2-Mixing device, 3-Sewage system, 4-Liquid mixing device, 5-Belt conveyor, 6-Collection hopper, 7-Wastewater collection pool, 8-Slurry pump, 9-Box drive motor, 10-Support sleeve, 11-Cylinder, 12-Sleeve bearing, 13-First booster pump, 14-Annular scraper, 15-Filter device, 16-Water storage space, 17-Annular rack, 18-Drive gear, 19-Base plate, 20-Gear drive mechanism, 21-First rotating shaft, 22-Discharge pipe, 23-Quick connector, 24-Pump body, 25-Base plate drive motor, 26-Feed drive motor, 27 28-Feed screw, 29-Bevel gear drive mechanism, 30-Material cylinder, 31-Second rotating shaft, 32-Gear transmission mechanism, 33-Agitating screw, 34-Electric telescopic rod, 35-Baffle plate, 36-Feed hopper, 37-Direct vibratory feeder, 38-Activated carbon filter, 39-Ultrafiltration water purifier, 40-Reverse osmosis filter, 41-Ultraviolet sterilizer, 42-Pressure water storage tank, 43-Second booster pump, 44-Check valve, 45-Discharge gap, 46-First liquid mixing tank, 47-Reversing valve, 48-Second liquid mixing tank, 49-Metering pump, 50-Locking hydraulic cylinder, 51-Locking plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding by those skilled in the art.

[0028] like Figure 1-11 As shown, the environmentally friendly wastewater treatment system includes a wastewater tank 1, a frame, a filter device 15, a drive device, a mixing device 2, and a wastewater system 3. The wastewater tank 1 is installed on the frame, and the filter device 15 is installed inside the wastewater tank 1. The drive device for driving the wastewater tank 1 is installed on the frame. By driving the wastewater tank 1, the mud and water in the wastewater are separated. The separated sludge is transported to the mixing device 2 for processing by a belt conveyor 5. After the wastewater is collected, it is transported to the wastewater system 3 for treatment.

[0029] The top of the sewage tank 1 is provided with a through hole, and a sleeve bearing 12 is installed at the through hole. The water inlet pipe connecting the mud pump 8 extends along the inner ring of the sleeve bearing 12 into the sewage tank 1. In this embodiment, a support sleeve 10 is provided at the top of the sewage tank 1, and the support sleeve 10 cooperates with a sleeve installed on the frame, so that the support sleeve 10 plays a stable supporting role when the drive device drives the sewage tank 1. Correspondingly, the through hole corresponds to the bottom of the support sleeve 10. The inner diameter of the support sleeve 10 is larger than the outer diameter of the water inlet pipe of the mud pump 8, and the gap between the two is as close as possible to about 10cm, so that the sewage tank 1 does not come into contact with the water inlet pipe of the mud pump 8 during the driving process, ensuring the normal water intake of the water inlet pipe of the mud pump 8.

[0030] A water storage gap for storing sewage is provided between the inner wall of the sewage tank 1 and the filter device 15. A discharge pipe 22 for installing a solenoid valve is installed on the side wall of the sewage tank 1. The sewage tank 1 has an opening at the bottom, and a closing device for opening or closing the opening is installed at the opening position. The closing device includes a base plate 19, a first rotating shaft 21, a gear drive mechanism 20, and a base plate drive motor 25. The first rotating shaft 21 is mounted on the bottom of the sewage tank 1 via a bearing, and the base plate 19 is fixedly connected to the first rotating shaft 21. The first rotating shaft 21 is connected to the base plate drive motor 25 via a gear transmission mechanism 31. In this embodiment, a rubber sealing gasket is covered on the base plate 19. The base plate drive motor 25 drives the first rotating shaft 21 to rotate via the gear transmission mechanism 31. The rotation of the first rotating shaft 21 causes the base plate 19 to open or close the bottom opening of the sewage tank 1. Driven by the drive device, the wastewater undergoes separation of water and sludge. The closing device then opens, allowing the sludge to be poured out. Simultaneously, the outlet pipe 22, equipped with a solenoid valve, is moved to the wastewater collection tank 7, and the solenoid valve is opened to collect the water. In this embodiment, a locking hydraulic cylinder 50 is also installed on the side of the wastewater tank 1. A locking plate 51 for locking the base plate 19 is also installed at the end of the locking hydraulic cylinder 50, ensuring the base plate 19 is stable after being closed.

[0031] The filtration device 15 includes a filter element, a filter cloth, and a filter media. The filter element has a ring-shaped frame structure with water-permeable mesh evenly distributed on its surface. The surface of the filter element is covered with filter cloth, and the interior of the filter element is filled with filter media, which can be coarse sand, gravel, cinder, or activated carbon. In addition, a first booster pump 13 is installed on the frame. Pipes are installed on both the first booster pump 13 and the sewage tank 1. The pipes are connected to each other through quick connectors 23 to achieve quick connection and quick disconnection. The pipes on the sewage tank 1 are connected to the water storage gap. After the pipes are connected through the quick connectors 23, the first booster pump 13 is connected to a water source, which can deliver high-pressure water to the water storage gap and overflow in the reverse direction along the filtration device 15 to clean the filtration device 15 and ensure filtration performance.

[0032] The driving device includes a ring rack 17, a housing drive motor 9, a slewing bearing, and a drive gear 18. The ring rack 17 is mounted on the sewage tank 1, and a slewing bearing for supporting the ring rack 17 is mounted on the frame. The housing drive motor 9 is mounted on the frame, and the drive gear 18, which meshes with the ring rack 17, is mounted on the housing drive motor 9. In this embodiment, the sewage tank 1 is a cylindrical structure, vertically arranged. The slewing bearing supports the sewage tank 1 during rotation. The housing drive motor 9 drives the drive gear 18 to rotate, and the drive gear 18 drives the ring rack 17, thus rotating the sewage tank 1.

[0033] A sludge scraping device is installed on the sewage tank 1. The sludge scraping device includes an annular scraper 14 and a cylinder 11. The cylinder 11 is mounted on the top of the sewage tank 1 via a bracket. The end of the cylinder 11 is connected to the annular scraper 14 located inside the sewage tank 1, and the side of the annular scraper 14 is attached to the inner wall of the filter device 15. In this embodiment, a rubber scraping ring can be provided around the outer circumference of the annular scraper 14 to ensure contact with the inner wall of the filter device 15 for sludge removal.

[0034] The mixing device 2 includes a mixing tank, a feeding drive motor 26, a feeding screw 27, a bevel gear drive mechanism 28, a material cylinder 29, a second rotating shaft 30, a gear transmission mechanism 31, a stirring screw 32, an electric telescopic rod 33, a baffle plate 34, and a vertical vibrating feeder 36. The top of the mixing tank is equipped with the feeding drive motor 26, the material cylinder 29, the vertical vibrating feeder 36, and a feeding hopper 35. The material cylinder 29 contains the feeding screw 27 connected to the feeding drive motor 26, and the top of the material cylinder 29 is connected to the feeding hopper. The top of the mixing tank is also equipped with the second rotating shaft 30, which is connected to the feeding hopper via the bevel gear drive mechanism 28. The screw 27 is driven and connected, and the bottom of the second rotating shaft 30 is driven and connected to the stirring screw 32 installed inside the mixing box through the gear transmission mechanism 31. The material cylinder 29 is connected to the inlet of the vertical vibrating feeder 36. The outlet of the vertical vibrating feeder 36 is equipped with an electric telescopic rod 33 through a bracket. The end of the electric telescopic rod 33 is connected to a baffle plate 34. The baffle plate 34 has a long strip-shaped discharge gap 44 in the vertical direction. The electric telescopic rod 33 controls the baffle plate 34 to move up and down, thereby controlling the size of the discharge gap 44. The outlet of the vertical vibrating feeder 36 is equipped with a feed hopper 35 that communicates with the mixing box. In this embodiment, the feed drive motor 26 and the material cylinder 29 are mounted on the mixing box via a bracket. The feed screw 27 is connected to the feed drive motor 26 via a coupling, and a bevel gear is installed on the non-spiral section of the feed screw 27. Correspondingly, a bevel gear is also installed on the second rotating shaft 30. The two bevel gears mesh with each other. The position of the baffle plate 34 can be adjusted by installing an electric telescopic rod 33 on the linear vibrating feeder 36, thereby controlling the size of the discharge gap 44. The linear vibrating feeder 36 is driven by an internal motor to rotate the two eccentric shafts, thereby generating a huge linear excitation force. The material moves forward until it reaches the discharge port. In this embodiment, the discharge gap 44 is a vertical strip structure. By controlling the extension and retraction of the electric telescopic rod 33, the size of the discharge gap 44 relative to the discharge port can be adjusted, thereby controlling the discharge amount and discharge speed in the process of cooperating with the linear vibrating feeder 36. After the feed drive motor 26 drives the feed screw 27 to rotate, the second rotating shaft 30 is driven by the bevel gear transmission mechanism 31, and the second rotating shaft 30 drives the stirring screw 32 through the gear transmission mechanism 31.

[0035] The wastewater system 3 includes an activated carbon filter 37, an ultrafiltration water purifier 38, a reverse osmosis filter 39, an ultraviolet sterilizer 40, a pressure storage tank 41, and a second booster pump 42. The inlet of the activated carbon filter 37 is connected to the wastewater collection tank 7 via a pipe and a pump body 24. The outlet of the activated carbon filter 37 is connected to the inlet of the ultrafiltration water purifier 38 via a pipe with a solenoid valve installed. The outlet of the ultrafiltration water purifier 38 is connected to the inlet of the second booster pump 42. The outlet of the second booster pump 42 is connected to the inlet of the reverse osmosis filter 39 via a pipe with a check valve 43 installed. The outlet of the reverse osmosis filter 39 is connected to the inlet of the ultraviolet sterilizer 40 via a pipe with a solenoid valve installed. The outlet of the ultraviolet sterilizer 40 is connected to the pressure storage tank 41 via a pipe with a solenoid valve installed. Water enters through the inlet of activated carbon filter 37 to remove odors, residual chlorine, methane, pesticides, fertilizers, and other impurities. After filtration, the solenoid valve at the outlet of activated carbon filter 37 is opened to deliver the water to ultrafiltration water purifier 38, which removes harmful substances such as particles, bacteria, some viruses, colloids, and some organic matter. After filtration, the solenoid valve at the outlet of ultrafiltration water purifier 38 is opened to deliver the water to the second booster pump 42. After being pressurized by the second booster pump 42, the water is delivered through check valve 43 to reverse osmosis filter 39 to remove inorganic salts, organic matter, heavy metal ions, bacteria, viruses, and other substances. After filtration, the solenoid valve at the outlet of reverse osmosis filter 39 is opened to deliver the water to ultraviolet sterilizer 40, which then disinfects and stores the water in pressure storage tank 41.

[0036] The pressure storage tank 41 is equipped with a water quality detection device, which includes an internally installed pH sensor, turbidity sensor, dissolved oxygen sensor, water temperature sensor, and conductivity sensor. The pH sensor monitors the pH value of the water in real time, the turbidity sensor monitors the turbidity of the water in real time, the dissolved oxygen sensor monitors the solubility of the water in real time, the water temperature sensor monitors the water temperature in real time, and the conductivity sensor monitors the conductivity of the water in real time. The wireless terminal module consists of a GSM signal receiving module, a GSM signal transmitting module, a motherboard circuit, and a signal converter. The GSM signal receiving module receives external detection signals, the GSM signal transmitting module transmits the received external detection signals, and the signal converter converts the signals received by the GSM signal receiving module into digital signals. The GSM signal receiving module receives external signals and converts them through the signal converter; the converted signals are then transmitted to an external terminal through the GSM signal transmitting module.

[0037] The solution mixing device 4 includes a solution mixing tank, a reversing valve 46, a metering pump 48, and a water pump 49. At least two solution mixing tanks are provided for storing different solutions. The inlet of the metering pump 48 is connected to the outlet of the reversing valve 46 via a pipe. A pipe extends from the inlet of the reversing valve 46 to the solution mixing tank and connects to the water pump 49 installed within the tank. Chemicals for treating water sources can be added to the solution mixing tanks. After reversing via the reversing valve 46, different solution mixing tanks can be connected to the metering pump 48 to deliver different solutions, thereby altering the water's pH, turbidity, solubility, temperature, and conductivity.

[0038] The working process of this invention is as follows: The mud pump 8 is turned on to transport mud and water to the sewage tank 1. The housing drive motor 9 is turned on, driving the drive gear 18 to rotate. The drive gear 18 drives the meshing ring rack 17, causing the sewage tank 1 to rotate. During rotation, the water in the sludge is filtered by the filter device 15 and separated into mud and water inside the water storage space 16. The outlet pipe 22, equipped with a solenoid valve, is moved to the wastewater collection tank 7. The solenoid valve is opened to collect the water. Then, the bottom plate drive motor 25 is turned on to open the bottom opening of the sewage tank 1, allowing the sludge to be collected along the collection path. The hopper 6 is tilted onto the belt conveyor 5 for operation. During this process, the sludge scraping device scrapes off the sludge adhering to the filter device 15 and conveys it to the inlet of the mixing device 2 via the belt conveyor 5. The feeding drive motor 26 is turned on, and the material to be mixed is added to the hopper. After the material is conveyed to the tail of the material cylinder 29, it enters the linear vibrating feeder 36. The linear vibrating feeder 36 is driven by an internal motor to rotate the two eccentric shafts, thereby generating a huge linear excitation force. The material moves forward until it reaches the discharge port, and the discharge gap 44 is adjusted by the electric telescopic rod 33, thereby controlling the discharge amount and discharge speed. After the wastewater collection tank 7 collects water, the water source is pumped into the inlet of the activated carbon filter 37 by the pump body 24. During this process, the water is treated by the ultrafiltration water purifier 38, the reverse osmosis filter 39, and the ultraviolet sterilizer 40 before being fed into the pressure storage tank 41. The water quality detection device detects the water quality in the pressure storage tank 41 and adjusts the pH value, turbidity, solubility, water temperature, and conductivity by the liquid mixing device 4.

[0039] This invention can separate water and sludge from sewage. After separation, the sludge and water are treated separately. The separated sludge is transported to a mixing device for processing, while the sewage is collected and transported to a sewage system for treatment. Both water and sludge can be treated and recycled, turning waste into treasure, avoiding environmental pollution, and conforming to the environmental protection concept of waste recycling.

[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. An environmentally friendly wastewater treatment system, characterized in that: The environmentally friendly wastewater treatment system includes a wastewater tank, a frame, a filter device, a drive device, a mixing device, and a wastewater system. The wastewater tank is installed on the frame, and a filter device is installed inside the wastewater tank. A drive device for driving the wastewater tank is installed on the frame. By driving the wastewater tank, mud and water in the wastewater are separated. The separated sludge is transported to the mixing device for processing via a belt conveyor. The wastewater is collected and transported to the wastewater system for treatment. The sewage tank has a through hole at the top, and a bearing is installed at the through hole. The inlet pipe connecting the mud pump extends along the inner ring of the bearing into the sewage tank. A water storage gap for storing sewage is provided between the inner wall of the sewage tank and the filter device. A liquid outlet pipe for installing a solenoid valve is installed on the side wall of the sewage tank. The bottom of the sewage tank is open, and a closing device for opening or closing the opening is installed at the opening. The filter device includes a filter element, a filter cloth, and a filter media. The filter element is a ring frame structure with water-permeable mesh holes evenly distributed on its surface. The surface of the filter element is covered with filter cloth, and the inside of the filter element is filled with filter media. The closing device includes a base plate, a rotating shaft, a gear drive mechanism, and a base plate drive motor. The rotating shaft is installed at the bottom of the sewage tank through a bearing, and the base plate is fixedly connected to the rotating shaft. The rotating shaft is connected to the base plate drive motor through a gear transmission mechanism.

2. The environmentally friendly wastewater treatment system according to claim 1, characterized in that: The drive device includes a ring rack, a housing drive motor, a slewing bearing, and a drive gear. The ring rack is installed on the sewage tank, and a slewing bearing for supporting the ring rack is installed on the frame. The housing drive motor is installed on the frame, and a drive gear that meshes with the ring rack is installed on the housing drive motor.

3. The environmentally friendly wastewater treatment system according to claim 2, characterized in that: The wastewater tank is equipped with a sludge scraping device, which includes an annular scraper and a cylinder. The cylinder is mounted on the top of the wastewater tank via a bracket, and the end of the cylinder is connected to the annular scraper located inside the wastewater tank. The side of the annular scraper is attached to the inner wall of the filter device.

4. The environmentally friendly wastewater treatment system according to claim 1 or 3, characterized in that: The mixing device includes a mixing box, a feeding drive motor, a feeding screw, a bevel gear drive mechanism, a material cylinder, a second rotating shaft, a gear transmission mechanism, a stirring screw, an electric telescopic rod, a baffle plate, and a vertical vibrating feeder. The mixing box has a feeding drive motor, a material cylinder, a vertical vibrating feeder, and a feeding hopper mounted on its top. A feeding screw connected to the motor is installed inside the material cylinder, and the top of the material cylinder is connected to the hopper. A second rotating shaft is also mounted on the top of the mixing box. The top of the second rotating shaft is driven by the feeding screw via a bevel gear drive mechanism, and the bottom of the second rotating shaft is driven by the stirring screw installed inside the mixing box via a gear transmission mechanism. The material cylinder is connected to the inlet of the vertical vibrating feeder. An electric telescopic rod is mounted on the outlet of the vertical vibrating feeder via a bracket. The end of the electric telescopic rod is connected to a baffle plate, which has a long, narrow discharge gap along its vertical direction. The electric telescopic rod controls the up-and-down movement of the baffle plate, thereby controlling the size of the discharge gap. A feeding hopper connected to the mixing box is installed at the outlet of the vertical vibrating feeder.

5. The environmentally friendly wastewater treatment system according to claim 4, characterized in that: The wastewater system includes an activated carbon filter, an ultrafiltration water purifier, a reverse osmosis filter, an ultraviolet sterilizer, a pressure storage tank, and a second booster pump. The inlet of the activated carbon filter is connected to a wastewater collection tank via a pipe and a pump body. The outlet of the activated carbon filter is connected to the inlet of the ultrafiltration water purifier via a pipe equipped with a solenoid valve. The outlet of the ultrafiltration water purifier is connected to the inlet of the second booster pump. The outlet of the second booster pump is connected to the inlet of the reverse osmosis filter via a pipe equipped with a check valve. The outlet of the reverse osmosis filter is connected to the inlet of the ultraviolet sterilizer via a pipe equipped with a solenoid valve. The outlet of the ultraviolet sterilizer is connected to the pressure storage tank via a pipe equipped with a solenoid valve.

6. The environmentally friendly wastewater treatment system according to claim 5, characterized in that: The pressure storage tank is equipped with a water quality testing device, which includes an internally installed pH sensor, turbidity sensor, dissolved oxygen sensor, water temperature sensor, and conductivity sensor.

7. The environmentally friendly wastewater treatment system according to claim 6, characterized in that: It also includes a solution mixing device, which includes a solution mixing tank, a reversing valve, a high-pressure plunger pump, and a water pump. At least two solution mixing tanks are provided for storing different solutions. The inlet of the high-pressure plunger pump is connected to the outlet of the reversing valve through a pipe. The inlet of the reversing valve is connected to the solution mixing tank through a pipe that extends to the solution mixing tank and is connected to the water pump installed in the solution mixing tank.

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