Method and device for rapid photocuring of low-organic-matter multi-source sludge for building material utilization

Abstract

The application belongs to the technical field of sludge treatment, and particularly relates to a method and device for building material utilization of low-organic-matter multi-source sludge rapid photocuring, A1: taking low-organic-matter multi-source sludge S1 as a main building material, S1 is multi-source sludge with a water content of 60-80%, and the organic matter content is 30%-50%, waste oil S2 is added, and the volume ratio of S1 to S2 is 10:1; A2: green foaming surfactant Sol-A is added into the low-organic-matter multi-source sludge S1 to form a mixture S3, and the ratio of S1 to Sol-A is 100: (1-3); after photocuring, the sludge is deeply dewatered and subjected to multi-wavelength cyclic irradiation, the water content of the sludge can be reduced to below 30% within 30-32 min, and the sludge enters a pyrolysis or drying device, and is burned into carbon-based material containing holes, the energy consumption is reduced by 50%, the comprehensive photocuring material consumption is reduced by 10%, and the total cost is reduced by 30%-40% compared with the energy consumption of the traditional dewatering-pyrolysis / drying process.

Description

Technical Field

[0001] This invention belongs to the field of sludge treatment technology, specifically a method and apparatus for utilizing building materials through rapid photopolymerization of low-organic-matter multi-source sludge. Background Technology

[0002] Silicon in low-organic-matter multi-source sludge mainly exists in the form of silicate minerals and amorphous silica. Low-organic-matter multi-source sludge refers to a general term for sludge produced from various sources, including municipal sewage sludge, water supply sludge, agricultural and rural sewage sludge, and sludge from other sources such as riverbed sediment and lakebed sediment. These sediments are formed during the long-term deposition of natural water bodies and contain a large amount of organic matter, sediment, microorganisms, and potentially heavy metals and persistent organic pollutants.

[0003] Sludge from various sources varies significantly in composition, properties, and treatment difficulty. Municipal sewage sludge, originating from urban wastewater treatment plants, is a solid waste generated during the treatment of urban domestic sewage and some industrial wastewater. Its composition is relatively complex, containing organic matter, pathogens, heavy metals, and various chemical substances. Water supply sludge: In water treatment, raw water usually contains various impurities, such as suspended particles, colloids, organic matter, and microorganisms. In order to purify the raw water to meet drinking water standards, it needs to go through a series of treatment processes, such as coagulation, sedimentation, and filtration. During these processes, the added coagulant will cause the suspended particles and colloids in the water to agglomerate into larger flocs. Then, through sedimentation and filtration processes, these flocs are separated from the water, thus forming water supply sludge. Agricultural and rural sewage sludge: This includes sludge generated after the treatment of rural domestic sewage, livestock wastewater, and farmland drainage. This type of sludge typically contains high levels of organic matter and nutrients such as nitrogen and phosphorus, and may also contain pesticide and fertilizer residues. Other sources of sludge include riverbed sediment and lake sediment. These sediments are formed during the long-term deposition of natural water bodies and contain a large amount of organic matter, silt, microorganisms, and potentially heavy metals and persistent organic pollutants.

[0004] Therefore, the present invention provides a method and apparatus for utilizing building materials by rapidly photocuring low-organic-matter multi-source sludge. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is: a method for utilizing building materials by rapid photopolymerization of low-organic-matter multi-source sludge, the method comprising the following steps: A1: Using low-organic-matter multi-source sludge S1 as the main building material, S1 is a multi-source sludge with a moisture content of 60-80% and an organic matter content of 30%~50%, and waste oil S2 is added. The volume ratio of S1 to S2 is 10:1. A2: Green foaming surfactant Sol-A is added to low organic matter multi-source sludge S1 to form mixture S3, S1:Sol-A=100:(1-3). A3: Add photocurable material S0 to S2, mix thoroughly in a mixer, then add conventional photocurable material initiator Sol-C to form mixture S4, S2:S0:Sol-C=100:(1.5-3):(0.5-1); A4: Mixture S3 and mixture S4 are thoroughly stirred in a mixer to form large bubbles. 365nm ultraviolet light is used to excite the free radical photoinitiator to achieve free radical photopolymerization initiation. 405nm wavelength light source is used to excite the cationic photoinitiator. Multi-wavelength cyclic irradiation is carried out for 1 hour, mainly in the foam and emulsification areas. A5: There is too much foam. Sol-B spraying needs to be increased and continuous irradiation is required. The bottom agitator should be continuously stirred and the reaction should be carried out in a batch process. When the bottom foam is less than 5cm, it should be allowed to settle for 5-8 hours. The bottom mud and scum should be removed for dewatering, and the wastewater should be sent to the wastewater treatment plant.

[0007] Appropriate addition of the green foaming surfactant Sol-A brings the content of green foaming agents such as amino acid surfactants and alkyl glycoside surfactants to 300-500 mg / kg. (Amino acid surfactants and alkyl glycoside surfactants are difficult-to-treat components in municipal sludge, generally ranging from a few mg / kg to tens of mg / kg. In urban areas with high consumption of cosmetics and detergents, the content of these surfactants in municipal sludge may approach tens of mg / kg; while in areas where industrial wastewater accounts for a large proportion and the use of these surfactants in domestic sewage is low, the content may only be a few mg / kg.) The dosage of the cationic photoinitiator Sol-C is generally 1%-5% of the solid content of the water-based resin.

[0008] B1: The remaining bottom mud and scum in A5 are deeply dewatered and irradiated with multiple wavelengths. The sludge is reduced to a moisture content of less than 30% within 30-32 minutes and then enters a pyrolysis or drying device to burn into a porous carbon-based material. Waste oil S2 includes recyclable waste oil such as household waste oil, biodiesel, and animal and vegetable oils. B2: Photocurable material S0 contains green water-based resins such as acrylate water-based resins, polyurethane water-based resins, epoxy resin water-based resins, and water-based alkyd resins. It is thoroughly mixed in a mixer to form a stable dispersion system, and then mixed with S2 in the mixer. B3: Add a photocurable material to the foam section so that the photocurable material is adsorbed onto the foam. When exposed to ultraviolet light, the foam layer is quickly cured. Its main purpose is to cure the organic components in the low organic matter sludge. B4: Low organic matter multi-source sludge, rapidly centrifuged and cut at high speed to form fine nanoparticles with a particle size of 20nm-30nm. Since 0.1wt% silica has the effect of auxiliary defoaming agent, it can destroy the surface tension of bubbles through physical adsorption and is used as a defoaming agent. The low organic matter multi-source sludge solution with 0.1wt% silica is calculated to be Sol-B.

[0009] After photocuring, the bottom sludge and scum are deeply dewatered and subjected to multi-wavelength circulating irradiation. The sludge can be reduced to a moisture content of less than 30% within 30-32 minutes and then enters a pyrolysis or drying device to be burned into a porous carbon-based material. Energy consumption is reduced by 50%, and the overall consumption of photocuring materials is reduced by 10%. The total cost is 30%-40% lower than the energy consumption of traditional dewatering-pyrolysis / drying processes.

[0010] Because it is a multi-source sludge with low organic matter and high silicon content, surfactants can be used to mix the sludge organic matter, waste oil, water-based resin, and initiator in the form of foam. Under light conditions, regardless of the complexity of the system, it can be directly cured using UV, forming a rapid curing process in complex systems. The system is flammable, increasing its calorific value. It can both burn and produce carbon-based materials.

[0011] The steps for using the mixer described in step A2 include: C1: Low organic matter multi-source sludge S1 and foaming surfactant Sol-A are injected into the mixer through the first feed port, and then waste oil S2, photocurable material S0 and conventional photocurable material initiator Sol-C are added into the connecting sleeve through the second feed port; C2: The first connecting shaft and the second connecting shaft are connected by the locking of the locking rod and the locking slot. Then, the first connecting shaft and the second connecting shaft are driven by the motor to rotate, so that the first stirring blade and the second stirring blade can stir and mix the materials in the mixer and the connecting sleeve. C3: After the materials in the connecting sleeve are mixed, they are discharged from the outlet into the mixer, where they continue to be mixed with the materials in the mixer. After the mixture is fully mixed, the materials are discharged from the outlet.

[0012] A device for utilizing building materials by rapid photocuring of low-organic-matter multi-source sludge is provided. The device is applicable to the above-mentioned method for utilizing building materials by rapid photocuring of low-organic-matter multi-source sludge. The top of the mixer is connected to a first feed port and a second feed port. The bottom surface of the inner wall of the mixer is rotatably connected to a first connecting shaft. Multiple sets of first stirring blades are fixedly connected to the side wall of the first connecting shaft. The bottom surface of the mixer is provided with a motor that drives the first connecting shaft to rotate. Preferably, a connecting sleeve is fixedly connected to the top surface of the inner wall of the mixer, a second connecting shaft is rotatably connected to the bottom surface of the connecting sleeve, a pair of fixing rings are provided on the surface of the second connecting shaft, a set of second stirring blades are fixedly connected to the side wall of the fixing rings, a set of discharge holes are opened on the bottom surface of the connecting sleeve, a sealing component for sealing the discharge holes is provided on the connecting sleeve, and a connecting mechanism is provided between the first connecting shaft and the second connecting shaft.

[0013] Preferably, the connecting mechanism includes a slide groove formed at the top of the first connecting shaft, a connecting plate disposed inside the slide groove, a first spring fixedly connected between the bottom surface of the connecting plate and the inner wall of the slide groove, the connecting plate being made of magnetic material, an electromagnet magnetically attracted to the connecting plate being fixedly connected to the top surface of the inner wall of the slide groove, a pair of locking rods being fixedly connected to the top surface of the connecting plate, and a pair of locking grooves engaging with the locking rods being formed on the bottom surface of the second connecting shaft.

[0014] Preferably, the sealing assembly includes a sealing ring that contacts the bottom surface of the connecting sleeve, the sealing ring covering the discharge hole for sealing, and a set of second springs fixedly connected to the top surface of the sealing plate, and a fixing plate fixedly connected to the top surface of the second springs, the fixing plate being fixedly connected to the inner wall of the connecting sleeve.

[0015] Preferably, the connecting plate is slidably and sealed to the inner wall of the slide groove. A connecting rod is provided in the slide groove. The connecting rod has a first connecting hole that communicates with the slide groove. The top of the connecting rod has a second connecting hole that communicates with the first connecting hole. A moving rod is slidably and sealed to the inner wall of the second connecting hole. A third spring is fixedly connected between the bottom surface of the moving rod and the inner wall of the second connecting hole. A magnetic ring fitted on the connecting sleeve is fixedly connected to the top surface of the moving rod. The sealing ring is made of a magnetic material that magnetically attracts the magnetic ring.

[0016] Preferably, a pair of hollow grooves are formed inside the second connecting shaft, and a set of rectangular grooves communicating with the hollow grooves are formed on the side wall of the second connecting shaft. A fixing plate is slidably connected to the inner wall of the rectangular groove, and a slide rod is fixedly connected to the fixing plate. The slide rod is slidably connected to the inside of the second connecting shaft. A movable groove is formed inside the second connecting shaft, and the slide rod is slidably connected to the inner wall of the movable groove. The side of the fixing plate away from the slide rod is fixedly connected to a fixing ring. A movable component for driving the slide rod to move is provided inside the mixer.

[0017] Preferably, the movable component includes a circular hole formed on the bottom surface of the second connecting shaft, the circular hole communicating with the movable groove, a fixed sleeve fixedly connected to the bottom surface of the second connecting shaft, the first connecting shaft rotatably connected to the inner wall of the fixed sleeve, a sealing ring provided on the bottom surface of the fixed sleeve to fit and seal against the first connecting shaft, and a fourth spring fixedly connected between the bottom surface of the slide rod and the inner wall of the movable groove.

[0018] The beneficial effects of this invention are as follows: 1. This invention achieves deep dehydration of bottom mud and scum after photocuring and multi-wavelength cyclic irradiation. The sludge can be reduced to a moisture content of less than 30% within 30-32 minutes and then enter a pyrolysis or drying device to be burned into a porous carbon-based material. Energy consumption is reduced by 50%, and the overall photocuring material consumption is reduced by 10%. The total cost is 30%-40% lower than the energy consumption of the traditional dehydration-pyrolysis / drying process.

[0019] 2. The multi-source sludge in this invention, being low in organic matter and high in silicon, can be mixed with organic matter, waste oil, water-based resin, and initiator using surfactants in foam form. Under light conditions, regardless of the system's complexity, it can be directly cured using UV, resulting in rapid curing within a complex system. The system is flammable, increasing its calorific value. It is both combustible and yields carbon-based materials. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figures 1-3 This is a schematic diagram of the method in this invention; Figure 4 This is a schematic diagram of the mixer in this invention; Figure 5 This is a schematic diagram of the internal structure of the mixer in this invention; Figure 6 yes Figure 5 Enlarged view of point A; Figure 7 yes Figure 5 Enlarged view of point B; Figure 8 This is a schematic diagram of the internal structure of the connecting rod in this invention; Figure 9 This is a cross-sectional view of the second connecting shaft in this invention.

[0022] In the diagram: 1. Mixer; 2. First feed inlet; 3. Second feed inlet; 4. Discharge outlet; 5. First connecting shaft; 6. First stirring blade; 7. Second connecting shaft; 8. Fixing ring; 9. Second stirring blade; 10. Connecting sleeve; 11. Slide groove; 12. Connecting plate; 13. Electromagnet; 14. Locking rod; 15. Locking groove; 16. Discharge hole; 17. Sealing ring; 18. Fixing plate; 19. Magnetic ring; 20. Connecting rod; 21. Moving rod; 22. First connecting hole; 23. Second connecting hole; 24. Moving groove; 25. Slide rod; 26. Fixing plate; 27. Hollow groove; 28. Rectangular groove; 29. ​​Sealing ring; 30. Fixing sleeve; 31. Round hole. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] Example 1: As Figures 1 to 3 As shown in the embodiment of the present invention, a method for utilizing low-organic-matter multi-source sludge through rapid photopolymerization in building materials includes the following steps: A1: Using low-organic-matter multi-source sludge S1 as the main building material, S1 is a multi-source sludge with a moisture content of 60-80% and an organic matter content of 30%~50%, and waste oil S2 is added. The volume ratio of S1 to S2 is 10:1. A2: Green foaming surfactant Sol-A is added to low organic matter multi-source sludge S1 to form mixture S3, S1:Sol-A=100:(1-3). A3: Add photocurable material S0 to S2, mix thoroughly in mixer 1, then add conventional photocurable material initiator Sol-C to form mixture S4, S2:S0:Sol-C=100:(1.5-3):(0.5-1); A4: Mixture S3 and mixture S4 are thoroughly stirred in mixer 1 to form large bubbles. 365nm ultraviolet light is used to excite free radical photoinitiation for 1 hour. 405nm cationic initiation is used for multi-wavelength cyclic irradiation, mainly in the foam region and emulsification region. A5: There is too much foam. Sol-B spraying needs to be increased and continuous irradiation is required. The bottom agitator should be continuously stirred and the reaction should be carried out in a batch process. When the bottom foam is less than 5cm, it should be allowed to settle for 5-8 hours. The bottom mud and scum should be removed for dewatering, and the wastewater should be sent to the wastewater treatment plant.

[0025] Appropriate addition of the green foaming surfactant Sol-A brings the content of green foaming agents such as amino acid surfactants and alkyl glycoside surfactants to 300-500 mg / kg. (Amino acid surfactants and alkyl glycoside surfactants are difficult-to-treat components in municipal sludge, generally ranging from a few mg / kg to tens of mg / kg. In urban areas with high consumption of cosmetics and detergents, the content of these surfactants in municipal sludge may approach tens of mg / kg; while in areas where industrial wastewater accounts for a large proportion and the use of these surfactants in domestic sewage is low, the content may only be a few mg / kg.) The dosage of the cationic photoinitiator Sol-C is generally 1%-5% of the solid content of the water-based resin.

[0026] B1: The remaining bottom mud and scum in A5 are deeply dewatered and irradiated with multiple wavelengths. The sludge is reduced to a moisture content of less than 30% within 30-32 minutes and then enters a pyrolysis or drying device to burn into a porous carbon-based material. Waste oil S2 includes recyclable waste oil such as household waste oil, biodiesel, and animal and vegetable oils. B2: The photocurable material S0 contains green water-based resins such as acrylate water-based resin, polyurethane water-based resin, epoxy resin water-based resin and water-based alkyd resin. It is thoroughly stirred in mixer 1 to form a stable dispersion system, and then mixed with S2 in mixer 1. B3: Add a photocurable material to the foam section so that the photocurable material is adsorbed onto the foam. When exposed to ultraviolet light, the foam layer is quickly cured. Its main purpose is to cure the organic components in the low organic matter sludge. B4: Low organic matter multi-source sludge, rapidly centrifuged and cut at high speed to form fine nanoparticles with a particle size of 20nm-30nm. Since 0.1wt% silica has the effect of auxiliary defoaming agent, it can destroy the surface tension of bubbles through physical adsorption and is used as a defoaming agent. The low organic matter multi-source sludge solution with 0.1wt% silica is calculated to be Sol-B.

[0027] After photocuring, the bottom sludge and scum are deeply dewatered and subjected to multi-wavelength circulating irradiation. The sludge can be reduced to a moisture content of less than 30% within 30-32 minutes and then enters a pyrolysis or drying device to be burned into a porous carbon-based material. Energy consumption is reduced by 50%, and the overall consumption of photocuring materials is reduced by 10%. The total cost is 30%-40% lower than the energy consumption of traditional dewatering-pyrolysis / drying processes.

[0028] Because it is a multi-source sludge with low organic matter and high silicon content, surfactants can be used to mix the sludge organic matter, waste oil, water-based resin and initiator in the form of foam. Under light conditions, regardless of the complexity of the system, it can be directly cured by UV to form a rapid curing in a complex system. The system is flammable, increases the calorific value, and can both burn and produce carbon-based materials.

[0029] Example 2: Figures 4 to 9As shown in the comparative embodiment one, another embodiment of the present invention is: a building material utilization device for rapid photocuring of low organic matter multi-source sludge. This device is applicable to the above-mentioned method for rapid photocuring of low organic matter multi-source sludge into building materials. The top of the mixer 1 is connected to a first feed port 2 and a second feed port 3. The bottom surface of the inner wall of the mixer 1 is rotatably connected to a first connecting shaft 5. Multiple sets of first stirring blades 6 are fixedly connected to the side wall of the first connecting shaft 5. A motor for driving the first connecting shaft 5 to rotate is provided on the bottom surface of the mixer 1. A connecting sleeve 10 is fixedly connected to the top surface of the inner wall of the mixer 1. A second connecting shaft 7 is rotatably connected to the bottom surface of the connecting sleeve 10. A pair of fixing rings 8 are provided on the surface of the second connecting shaft 7. A set of second stirring blades 9 are fixedly connected to the side wall of the fixing rings 8. A set of discharge holes 16 are opened on the bottom surface of the connecting sleeve 10. A sealing component for sealing the discharge holes 16 is provided on the connecting sleeve 10. A connecting mechanism is provided between the first connecting shaft 5 and the second connecting shaft 7. The current mixer 1 has certain limitations when it is working. For example, when mixing low organic matter multi-source sludge S1 and foaming surfactant Sol-A, it cannot simultaneously mix waste oil S2, photocurable material S0 and conventional photocurable material initiator Sol-C. They can only be processed separately, which results in low processing efficiency of the building material utilization method of rapid photocuring of low organic matter multi-source sludge. The low-organic-matter multi-source sludge S1 and foaming surfactant Sol-A are injected into the mixer 1 through the first feed port 2 via the aforementioned mechanism. Then, waste oil S2, photocurable material S0, and conventional photocurable material initiator Sol-C are added into the connecting sleeve 10 through the second feed port 3. At this time, the first connecting shaft 5 and the second connecting shaft 7 can be connected through the connecting mechanism. When the motor drives the first connecting shaft 5 to rotate, the second connecting shaft 7 will also rotate accordingly, so that the first stirring blade 6 stirs and mixes the low-organic-matter multi-source sludge S1 and foaming surfactant Sol-A to form S3. At the same time, the second stirring blade 9 stirs and mixes the waste oil S2, photocurable material S0, and conventional photocurable material initiator Sol-C. Material S0 and conventional photocurable material initiator Sol-C are stirred and mixed to form S4. Then, the sealing component can be de-sealed from the discharge port 16, and the S4 mixture can be discharged from the discharge port 16 into the mixer 1 to mix with S1. At this time, the first connecting shaft 5 and the second connecting shaft 7 can be de-connected, and the motor can only drive the first connecting shaft 5 to rotate, thereby reducing the power of the motor and achieving the effect of saving energy. When the first connecting shaft 5 rotates, the first stirring blade 6 will stir and mix S3 and S4. Through the above mechanism, S3 and S4 can be stirred and mixed simultaneously, thereby greatly improving the stirring and mixing efficiency.

[0030] The connecting mechanism includes a slide groove 11 formed at the top of the first connecting shaft 5, a connecting plate 12 disposed inside the slide groove 11, a first spring fixedly connected between the bottom surface of the connecting plate 12 and the inner wall of the slide groove 11, the connecting plate 12 being made of magnetic material, an electromagnet 13 magnetically attracted to the connecting plate 12 being fixedly connected to the top surface of the inner wall of the slide groove 11, a pair of locking rods 14 being fixedly connected to the top surface of the connecting plate 12, and a pair of locking grooves 15 engaging with the locking rods 14 being formed on the bottom surface of the second connecting shaft 7; When the first connecting shaft 5 and the second connecting shaft 7 need to be separated, the connecting plate 12 can be moved downward by the electromagnet 13, thereby causing the locking rod 14 to disengage from the slot 15. At this time, when the first connecting shaft 5 rotates, it will no longer drive the second connecting shaft 7 to rotate. By turning off the electromagnet 13, the first spring can push the connecting plate 12 to move upward. If the locking rod 14 does not correspond to the slot 15, it will abut against the bottom surface of the second connecting shaft 7. Then, during the rotation of the first connecting shaft 5, the locking rod 14 will align with the slot 15 and then be pushed into the slot 15 by the first spring to engage. At this time, when the first connecting shaft 5 rotates, it can synchronously drive the second connecting shaft 7 to rotate.

[0031] The sealing assembly includes a sealing ring 17 that contacts the bottom surface of the connecting sleeve 10. The sealing ring 17 covers the discharge hole 16 for sealing. A set of second springs is fixedly connected to the top surface of the sealing plate. A fixing plate 18 is fixedly connected to the top surface of the second springs. The fixing plate 18 is fixedly connected to the inner wall of the connecting sleeve 10. In this application, the liquid discharge hole can be made to firmly adhere to the bottom surface of the connecting sleeve 10 by the force of the second spring pushing the sealing ring 17, so as to cover and seal the discharge hole 16 and prevent material from falling into the mixer 1 during the mixing process.

[0032] The connecting plate 12 is slidably and sealed to the inner wall of the slide groove 11. A connecting rod 20 is provided in the slide groove 11. A first connecting hole 22 communicating with the slide groove 11 is opened in the connecting rod 20. A second connecting hole 23 communicating with the first connecting hole 22 is opened at the top of the connecting rod 20. A moving rod 21 is slidably and sealed to the inner wall of the second connecting hole 23. A third spring is fixedly connected between the bottom surface of the moving rod 21 and the inner wall of the second connecting hole 23. A magnetic ring 19 sleeved on the connecting sleeve 10 is fixedly connected to the top surface of the moving rod 21. The sealing ring 17 is made of a magnetic material that magnetically attracts the magnetic ring 19. In this application, when the first connecting shaft 5 and the second connecting shaft 7 are disengaged, it means that the material in the connecting sleeve 10 has been mixed. At this time, the material needs to be discharged. Through the above mechanism, when the electromagnet 13 pulls the connecting plate 12 downward, the connecting plate 12 pushes the gas in the slide groove 11 into the connecting hole. Then the gas enters the second connecting hole 23 and pushes the moving rod 21 upward. At this time, the moving rod 21 will drive the magnetic ring 19 to move upward, so that the sealing ring 17 moves upward with the magnetic ring 19 and no longer seals the discharge hole 16. At this time, the mixture S4 in the connecting sleeve 10 will be discharged from the discharge hole 16.

[0033] The second connecting shaft 7 has a pair of hollow grooves 27 inside, and a set of rectangular grooves 28 communicating with the hollow grooves 27 are formed on the side wall of the second connecting shaft 7. A fixing plate 26 is slidably connected to the inner wall of the rectangular grooves 28, and a sliding rod 25 is fixedly connected to the fixing plate 26. The sliding rod 25 is slidably connected to the inside of the second connecting shaft 7. A moving groove 24 is formed inside the second connecting shaft 7, and the sliding rod 25 is slidably connected to the inner wall of the moving groove 24. The side of the fixing plate 26 away from the sliding rod 25 is fixedly connected to the fixing ring 8. A moving component is provided inside the mixer 1 to drive the sliding rod 25 to move. In this application, the material in the connecting sleeve 10 is stirred and mixed by the second stirring blade 9. The sliding rod 25 can be driven to move up and down by the moving component. During the up and down movement of the sliding rod 25, the fixing plate 26 will drive the connecting ring to move up and down, thereby moving the second stirring blade 9 to improve the stirring and mixing effect of the second stirring blade 9 on the material in the connecting sleeve 10.

[0034] The movable component includes a circular hole 31 formed on the bottom surface of the second connecting shaft 7, the circular hole 31 communicating with the movable groove 24, a fixing sleeve 30 fixedly connected to the bottom surface of the second connecting shaft 7, the first connecting shaft 5 rotatably connected to the inner wall of the fixing sleeve 30, a sealing ring 29 provided on the bottom surface of the fixing sleeve 30 to fit and seal against the first connecting shaft 5, and a fourth spring fixedly connected between the bottom surface of the slide rod 25 and the inner wall of the movable groove 24; the electromagnet 13 in this application has two magnetic force settings. The first setting allows the electromagnet 13 to attract the connecting plate 12 downward while simultaneously disengaging the locking rod 14 from the locking groove 15, and the second setting... In the second gear position, the downward movement of the connecting plate 12 is insufficient to disengage the locking rod 14 from the locking groove 15. At the same time, the gas pushing the connecting plate 12 to the slide 11 is also insufficient to move the slide rod 25 upward. This allows the sealing ring 17 to move away from above the discharge hole 16. When the second gear position is activated, the electromagnet 13 is activated intermittently. At this time, the connecting plate 12 will move up and down. When the connecting plate 12 moves upward, it will push the gas in the slide 11 and the connecting sleeve 10 into the moving groove 24 through the round hole 31. At this time, the gas can push the slide rod 25 to move up and down, thereby achieving the effect of driving the second stirring blade 9 to move.

[0035] Working principle: Low-organic-matter multi-source sludge S1 and foaming surfactant Sol-A are injected into mixer 1 through the first feed port 2. Then, waste oil S2, photocurable material S0, and conventional photocurable material initiator Sol-C are added into connecting sleeve 10 through the second feed port 3. At this time, the first connecting shaft 5 and the second connecting shaft 7 are connected by the connecting mechanism. When the motor drives the first connecting shaft 5 to rotate, the second connecting shaft 7 will also rotate, so that the first stirring blade 6 stirs and mixes the low-organic-matter multi-source sludge S1 and foaming surfactant Sol-A to form S3. At the same time, the second stirring blade 9 stirs and mixes the waste oil S2, photocurable material S0, and conventional photocurable material initiator Sol-C. Material S0 and conventional photocurable material initiator Sol-C are stirred and mixed to form S4. Then, the sealing component can be de-sealed from the discharge port 16, and the S4 mixture can be discharged from the discharge port 16 into the mixer 1 to mix with S1. At this time, the first connecting shaft 5 and the second connecting shaft 7 can be de-connected, and the motor can only drive the first connecting shaft 5 to rotate, thereby reducing the power of the motor and achieving the effect of saving energy. When the first connecting shaft 5 rotates, the first stirring blade 6 will stir and mix S3 and S4. Through the above mechanism, S3 and S4 can be stirred and mixed simultaneously, thereby greatly improving the stirring and mixing efficiency. When the first connecting shaft 5 and the second connecting shaft 7 need to be separated, the connecting plate 12 can be moved downward by the electromagnet 13, thereby causing the locking rod 14 to disengage from the slot 15. At this time, when the first connecting shaft 5 rotates, it will no longer drive the second connecting shaft 7 to rotate. By turning off the electromagnet 13, the first spring can push the connecting plate 12 to move upward. If the locking rod 14 does not correspond to the slot 15, it will abut against the bottom surface of the second connecting shaft 7. Then, during the rotation of the first connecting shaft 5, the locking rod 14 will align with the slot 15 and then be pushed into the slot 15 by the first spring to engage. At this time, when the first connecting shaft 5 rotates, it can synchronously drive the second connecting shaft 7 to rotate. The liquid outlet in this application can be made to firmly adhere to the bottom surface of the connecting sleeve 10 by the force of the second spring pushing the sealing ring 17, so as to cover and seal the discharge hole 16 and prevent material from falling into the mixer 1 during the mixing process. In this application, when the first connecting shaft 5 and the second connecting shaft 7 are disengaged, it means that the material in the connecting sleeve 10 has been mixed. At this time, the material needs to be discharged. Through the above mechanism, when the electromagnet 13 pulls the connecting plate 12 downward, the connecting plate 12 pushes the gas in the slide groove 11 into the connecting hole. Then the gas enters the second connecting hole 23 and pushes the moving rod 21 upward. At this time, the moving rod 21 will drive the magnetic ring 19 to move upward, so that the sealing ring 17 will follow the magnetic ring 19 upward and no longer seal the discharge hole 16. At this time, the mixture S4 in the connecting sleeve 10 will be discharged from the discharge hole 16. In this application, the material in the connecting sleeve 10 is stirred and mixed by the second stirring blade 9. The moving component drives the slide rod 25 to move up and down. During the up and down movement of the slide rod 25, the fixed plate 26 will drive the connecting ring to move up and down, so that the second stirring blade 9 moves, thereby improving the stirring and mixing effect of the second stirring blade 9 on the material in the connecting sleeve 10. The electromagnet 13 in this application has two magnetic force settings. In the first setting, the electromagnet 13 can attract the connecting plate 12 to move downwards while simultaneously disengaging the locking rod 14 from the locking slot 15. In the second setting, the downward movement of the connecting plate 12 is insufficient to disengage the locking rod 14 from the locking slot 15, and the gas pushed by the connecting plate 12 to the slide 11 is also insufficient to move the slide rod 25 upwards. This allows the sealing ring 17 to move away from above the discharge hole 16. When the second and third settings are activated, the electromagnet 13 is activated intermittently. At this time, the connecting plate 12 will move up and down. When the connecting plate 12 moves upwards, it will push the gas in the slide 11 and the connecting sleeve 10 into the moving groove 24 through the round hole 31. At this time, the gas can push the slide rod 25 to move up and down, thereby achieving the effect of driving the second stirring blade 9 to move.

[0036] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0037] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for utilizing building materials through rapid photopolymerization of low-organic-matter, multi-source sludge, characterized in that: The method includes the following steps: A1: Using low-organic-matter multi-source sludge S1 as the main building material, S1 is a multi-source sludge with a moisture content of 60-80% and an organic matter content of 30%~50%, and waste oil S2 is added. The volume ratio of S1 to S2 is 10:

1. A2: Green foaming surfactant Sol-A is added to low organic matter multi-source sludge S1, and a mixture S3 is formed in a mixer (1), S1:Sol-A=100:(1-3). A3: Add photocurable material S0 to S2, stir thoroughly in mixer (1), and then add conventional photocurable material initiator Sol-C to form mixture S4, S2:S0:Sol-C=100:(1.5-3):(0.5-1); A4: Mix S3 and S4 are thoroughly stirred in a mixer (1) to form large bubbles. 365nm ultraviolet light is used to excite the free radical photoinitiator to achieve free radical photopolymerization initiation. 405nm wavelength light source is used to excite the cationic photoinitiator. Multi-wavelength cyclic irradiation is carried out for 1 hour, mainly in the foam area and emulsification area. A5: There is too much foam. Sol-B spraying needs to be increased and continuous irradiation is required. The bottom agitator should be continuously stirred and the reaction should be carried out in a batch process. When the bottom foam is less than 5cm, it should be allowed to settle for 5-8 hours. The bottom mud and scum should be removed for dewatering, and the wastewater should be sent to the wastewater treatment plant.

2. The method for utilizing low-organic-matter multi-source sludge through rapid photopolymerization in building materials according to claim 1, characterized in that: The method also includes the following steps: B1: The remaining bottom mud and scum in A5 are deeply dewatered and irradiated with multiple wavelengths. The sludge is reduced to a moisture content of less than 30% within 30-32 minutes and then enters a pyrolysis or drying device to burn into a porous carbon-based material. Waste oil S2 includes recyclable waste oil such as household waste oil, biodiesel, and animal and vegetable oils. B2: The photocurable material S0 contains green water-based resins such as acrylate water-based resin, polyurethane water-based resin, epoxy resin water-based resin and water-based alkyd resin. It is thoroughly mixed in the mixer (1) to form a stable dispersion system, and then mixed with S2 in the mixer (1). B3: Add a photocurable material to the foam section so that the photocurable material is adsorbed onto the foam. When exposed to ultraviolet light, the foam layer is quickly cured. Its main purpose is to cure the organic components in the low organic matter sludge. B4: Low organic matter multi-source sludge, rapidly centrifuged and cut at high speed to form fine nanoparticles with a particle size of 20nm-30nm. Since 0.1wt% silica has the effect of auxiliary defoaming agent, it can destroy the surface tension of bubbles through physical adsorption and is used as a defoaming agent. The low organic matter multi-source sludge solution with 0.1wt% silica is calculated to be Sol-B.

3. The method for utilizing low-organic-matter multi-source sludge through rapid photopolymerization in building materials according to claim 2, characterized in that: The steps for using the mixer (1) described in step A2 include: C1: Low organic matter multi-source sludge S1 and foaming surfactant Sol-A are injected into the mixer (1) through the first feed port (2), and then waste oil S2, photocurable material S0 and conventional photocurable material initiator Sol-C are added into the connecting sleeve (10) through the second feed port (3). C2: The first connecting shaft (5) and the second connecting shaft (7) are connected by the locking rod (14) and the locking groove (15). Then, the first connecting shaft (5) and the second connecting shaft (7) are rotated by the motor, so that the first stirring blade (6) and the second stirring blade (9) can stir and mix the materials in the mixer (1) and the connecting sleeve (10). C3: After the material in the connecting sleeve (10) is mixed, it is discharged into the mixer (1) through the discharge hole (16) and mixed with the material in the mixer (1) until it is fully mixed, and then discharged through the discharge port (4).

4. A device for the rapid photocuring of low-organic-matter multi-source sludge into building materials, wherein the device is applicable to the method for the rapid photocuring of low-organic-matter multi-source sludge into building materials as described in claim 3, characterized in that: The top of the mixer (1) is connected to a first feed port (2) and a second feed port (3). The bottom surface of the inner wall of the mixer (1) is rotatably connected to a first connecting shaft (5). Multiple sets of first stirring blades (6) are fixedly connected to the side wall of the first connecting shaft (5). The bottom surface of the mixer (1) is provided with a motor that drives the first connecting shaft (5) to rotate. The inner wall top surface of the mixer (1) is fixedly connected to a connecting sleeve (10), the bottom surface of the connecting sleeve (10) is rotatably connected to a second connecting shaft (7), the surface of the second connecting shaft (7) is provided with a pair of fixing rings (8), the side wall of the fixing rings (8) is fixedly connected to a set of second stirring blades (9), the bottom surface of the connecting sleeve (10) is provided with a set of discharge holes (16), the connecting sleeve (10) is provided with a sealing component for sealing the discharge holes (16), and a connecting mechanism is provided between the first connecting shaft (5) and the second connecting shaft (7).

5. The building material utilization device for rapid photopolymerization of low-organic-matter multi-source sludge according to claim 4, characterized in that: The connecting mechanism includes a slide groove (11) opened at the top of the first connecting shaft (5), a connecting plate (12) is provided inside the slide groove (11), a first spring is fixedly connected between the bottom surface of the connecting plate (12) and the inner wall of the slide groove (11), the connecting plate (12) is made of magnetic material, an electromagnet (13) that magnetically attracts the connecting plate (12) is fixedly connected to the top surface of the inner wall of the slide groove (11), a pair of locking rods (14) are fixedly connected to the top surface of the connecting plate (12), and a pair of locking grooves (15) that engage with the locking rods (14) are opened on the bottom surface of the second connecting shaft (7).

6. The building material utilization device for rapid photopolymerization of low-organic-matter multi-source sludge according to claim 5, characterized in that: The sealing assembly includes a sealing ring (17) that contacts the bottom surface of the connecting sleeve (10). The sealing ring (17) covers the discharge hole (16) for sealing. A set of second springs is fixedly connected to the top surface of the sealing plate. A fixing plate (18) is fixedly connected to the top surface of the second springs. The fixing plate (18) is fixedly connected to the inner wall of the connecting sleeve (10).

7. The building material utilization device for rapid photopolymerization of low-organic-matter multi-source sludge according to claim 6, characterized in that: The connecting plate (12) is slidably connected to the inner wall of the slide groove (11). A connecting rod (20) is provided in the slide groove (11). A first connecting hole (22) communicating with the slide groove (11) is provided in the connecting rod (20). A second connecting hole (23) communicating with the first connecting hole (22) is provided at the top of the connecting rod (20). A moving rod (21) is slidably connected to the inner wall of the second connecting hole (23). A third spring is fixedly connected between the bottom surface of the moving rod (21) and the inner wall of the second connecting hole (23). A magnetic ring (19) sleeved on the connecting sleeve (10) is fixedly connected to the top surface of the moving rod (21). The sealing ring (17) is made of a magnetic material that magnetically attracts the magnetic ring (19).

8. The building material utilization device for rapid photopolymerization of low-organic-matter multi-source sludge according to claim 7, characterized in that: The second connecting shaft (7) has a pair of hollow grooves (27) inside. The side wall of the second connecting shaft (7) has a set of rectangular grooves (28) that communicate with the hollow grooves (27). The inner wall of the rectangular grooves (28) is slidably connected to a fixing plate (26). A slide rod (25) is fixedly connected to the fixing plate (26). The slide rod (25) is slidably connected to the inside of the second connecting shaft (7). The second connecting shaft (7) has a moving groove (24) inside. The slide rod (25) is slidably connected to the inner wall of the moving groove (24). The side of the fixing plate (26) away from the slide rod (25) is fixedly connected to a fixing ring (8). The mixer (1) is provided with a moving component that drives the slide rod (25) to move.

9. The building material utilization device for rapid photopolymerization of low-organic-matter multi-source sludge according to claim 8, characterized in that: The moving component includes a circular hole (31) on the bottom surface of the second connecting shaft (7), the circular hole (31) communicating with the moving groove (24), a fixed sleeve (30) fixedly connected to the bottom surface of the second connecting shaft (7), the first connecting shaft (5) being rotatably connected to the inner wall of the fixed sleeve (30), a sealing ring (29) being provided on the bottom surface of the fixed sleeve (30) to fit and seal the first connecting shaft (5), and a fourth spring being fixedly connected between the bottom surface of the slide rod (25) and the inner wall of the moving groove (24).

10. The method for utilizing building materials by rapid photocuring of low-organic-matter multi-source sludge according to claim 1, wherein the low-organic-matter multi-source sludge is one or more of the following: water supply sludge, river dredging sediment, municipal sludge, and engineering mud.

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