A sludge harmless degradation device and method thereof

Abstract

The present invention discloses a sludge harmless degradation device and a method thereof. The device comprises a pretreatment component, a combined degradation component and a dehydration component; the pretreatment component includes a pretreatment tank, a homogenization plate and a driving motor for providing power to the homogenization plate; the combined degradation component includes a degradation tank, a dissolved air tank, a salvage member, a lifting motor and a first sludge pump; the dehydration component includes a dehydration tank, an extrusion member, a linkage member, a first electric push rod and a second sludge pump; the device of the present invention has a reasonable structural design. Through the combined treatment of microbial degradation, chemical oxidation and mechanical dehydration of sludge, the harmless and reduction treatment of sludge is realized; at the same time, the microbial inoculum and oxidant used in the present invention will not cause secondary pollution to the sludge. Compared with the traditional sludge treatment equipment, it has the advantages of mild degradation conditions, safety and high efficiency, and is suitable for popularization and use.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and particularly relates to a sludge harmless degradation device and method thereof. Background Art

[0002] Sludge harmless treatment refers to a series of physical, chemical or biological treatments on the sludge generated during the sewage treatment process to reduce its volume, mitigate or eliminate its potential hazards, and ultimately achieve resource utilization. At present, the work on sludge harmless treatment mainly focuses on improving the harmless disposal rate, promoting resource utilization technologies, and establishing relevant standard systems, etc.; emerging sludge treatment technologies, such as the two-stage drying + pyrolysis gasification process, are being applied to sludge disposal projects, and the sludge harmless treatment work is rapidly developing towards the direction of improving the disposal rate, promoting resource technologies, and establishing a standard system to achieve the dual goals of environmental protection and sustainable resource utilization.

[0003] In the prior art, the methods for sludge harmless treatment mainly include solvent extraction, hot water washing, thermal decomposition, ultrasonic oil removal technology, and biological treatment technology, etc. However, the above methods all have deficiencies. The solvent extraction technology has a large amount of extractant consumption, high cost, and the solvent recovery process requires a large amount of energy consumption; the hot water washing technology will cause secondary pollution; the thermal decomposition technology has high energy consumption and complex operation; the current biological treatment technology takes a long time and cannot recycle useful resources. Summary of the Invention

[0004] In view of the above existing technical problems, the present invention provides a sludge harmless degradation device and method thereof.

[0005] The technical solution of the present invention is: a sludge harmless degradation device, including a pretreatment component, a combined degradation component connected to the pretreatment component, and a dehydration component connected to the combined degradation component; the pretreatment component includes a pretreatment tank, a homogenizing plate slidably clamped inside the pretreatment tank, and a pushing motor provided at the top of the pretreatment tank to provide power for the homogenizing plate;

[0006] The combined degradation component includes a degradation tank, a dissolved gas tank provided at the bottom inside the degradation tank, a salvage member provided at the top inside the degradation tank, a lifting motor provided at the top of the degradation tank to provide lifting power for the salvage member, and a first sludge pump provided on the outer side wall of the degradation tank and communicating with the pretreatment tank and the degradation tank respectively; a partition is provided at the lower end inside the degradation tank; several dissolved gas nozzles are equidistantly distributed on the partition; the dissolved gas tank is connected to each dissolved gas nozzle through a conduit;

[0007] The dehydration assembly includes a dehydration tank, a squeezing member and a linkage member disposed inside the dehydration tank, a first electric push rod disposed on the outer side wall of the dehydration tank and providing power for the linkage member, and a second sludge pump disposed at the top end of the degradation tank and communicating with the degradation tank and the squeezing member respectively.

[0008] Furthermore, a water inlet flange is provided on the outer side wall of the pretreatment tank; several through grooves are provided through the homogenizing plate, and two threaded seats are provided at the top end of the homogenizing plate, which respectively penetrate through the pretreatment tank and are slidably clamped with the pretreatment tank; two moving lead screws are rotatably clamped to the top end of the pretreatment tank through vertical plates; the two moving lead screws are respectively threadedly connected to the two threaded seats in one-to-one correspondence, and small sprockets are provided at the ends of the two moving lead screws; the output end of the driving motor is connected with a main sprocket, and the main sprocket is connected with the two small sprockets through a chain drive;

[0009] A sewage discharge hopper is provided on the upper end face of the outer side wall of the degradation tank, and a chemical addition pipe is provided at the top end; the input end of the first sludge pump is communicated with the lower end inside the pretreatment tank through a conduit, and the output end of the first sludge pump is communicated with the upper end inside the degradation tank through a conduit;

[0010] A sludge discharge port and a water discharge port are provided at the lower end of the outer side wall of the dehydration tank; the input end of the second sludge pump is communicated with the lower end inside the degradation tank through a conduit, and the output end of the second sludge pump is communicated with the inside of the squeezing member through a conduit.

[0011] Furthermore, several connecting shafts are arranged side by side up and down in the middle of the homogenizing plate, connecting gears located inside the homogenizing plate are sleeved on each connecting shaft, and rotating mesh drums are provided at both ends of each connecting shaft; crushing knives are provided on each rotating mesh drum, and collection grooves are provided through the rotating mesh drums at the connection between the crushing knives and the rotating mesh drums; a follower seat that penetrates through the pretreatment tank and is slidably clamped with the pretreatment tank is provided at the top end of the homogenizing plate; a pushing rack that is slidably clamped with the inner wall of the homogenizing plate and meshes with each connecting gear at the same time is provided through the follower seat; an auxiliary motor is provided on the follower seat, the output end of the auxiliary motor is connected with an eccentric turntable, and the eccentric turntable and the top end of the pushing rack are movably hinged through a hinged rod; a sealing door is clamped on the outer side wall of the pretreatment tank;

[0012] Note: During the movement of the homogenizing plate, the auxiliary motor is used to drive the eccentric turntable to rotate. At this time, the pushing rack reciprocates along the inner wall of the homogenizing plate under the combined action of the hinged rod and the eccentric turntable. Each connecting shaft reciprocally rotates under the meshing action of the connecting gear and the pushing rack, and drives the corresponding rotating mesh drum to reciprocally rotate; when the rotating mesh drum rotates, the crushing knives are used to crush large particle impurities in the sludge, reducing the difficulty of subsequent sludge treatment; at the same time, the insoluble substances in the sludge enter the inside of the rotating mesh drum through the collection grooves on the rotating mesh drum, and finally the insoluble substances collected inside the rotating mesh drum are transferred through the sealing door.

[0013] Furthermore, the salvage component includes a salvage frame, a porous plate assembly movably arranged at the inner bottom of the salvage frame, and a second electric push rod arranged inside the salvage frame and providing power for the porous plate assembly; a transfer hole is arranged on the side wall of the salvage frame corresponding to the position of the sewage discharge hopper, a fixing plate is arranged at the center of the inner bottom of the salvage frame, and a threaded sleeve is arranged on the fixing plate; there are several porous plate assemblies, which are evenly distributed on both sides of the fixing plate; each porous plate assembly consists of two movable porous plates, and the sides of the two movable porous plates close to each other are movably hinged through a T-shaped plate, and the two movable porous plates at both ends are respectively slidably clamped with the inner side wall of the salvage frame; a pushing cross beam connected to each T-shaped plate is arranged inside the salvage frame; the second electric push rod is connected to the lower bottom surface of the pushing cross beam; the output end of the lifting motor is connected with a lifting lead screw that penetrates through the degradation tank and is threadedly connected with the threaded sleeve;

[0014] Note: The lifting motor is used to drive the lifting lead screw to rotate. Under the combined action of the threaded sleeve and the lifting lead screw, the salvage frame moves up and down along the inner wall of the degradation tank; during the descending process of the salvage frame, the second electric push rod is used to drive the pushing cross beam to move upward. At this time, the two movable porous plates connected by the T-shaped plate approach each other, opening the bottom of the salvage frame; during the ascending process of the salvage frame, the second electric push rod is used to drive the pushing cross beam to move downward. At this time, the movable porous plates close the bottom of the salvage frame, and the movable porous plates are used to block the pollutants floating on the surface of the sludge; during the movement of the salvage frame, it can also promote the uniformity of the mixing of the microbial inoculant, oxidant and sludge.

[0015] Furthermore, a scraper is slidably clamped at the inner bottom of the degradation tank, a U-shaped frame connected to the scraper is slidably clamped on the outer side wall of the degradation tank, and a third electric push rod connected to the U-shaped frame is arranged on the outer side wall of the degradation tank;

[0016] Note: The third electric push rod is used to push the U-shaped frame to move. At this time, the scraper moves inside the degradation tank to scrape the pollutants salvaged at the inner bottom of the salvage frame, which is beneficial to improving the working continuity of the salvage component.

[0017] Furthermore, the extrusion component includes two extrusion boxes symmetrically arranged inside the dewatering tank and extrusion plates respectively and movably clamped on the two extrusion boxes; one end of the extrusion box is open, and the other end is provided with a dewatering mesh plate. The open ends of the two extrusion boxes are close to each other, and the two extrusion plates are respectively and slidably clamped at the open ends of the two extrusion boxes; the output end of the second sludge pump is communicated with the inside of the extrusion box through a conduit;

[0018] Note: During use, the linkage component is used to push the two extrusion plates away from each other to extrude the sludge inside the two extrusion boxes. The water in the sludge passes through the dewatering mesh plate and then is discharged through the drain port, and the dewatered sludge is discharged through the sludge discharge port, realizing the reduction treatment of the sludge.

[0019] Further, the linkage member is arranged between the two extrusion plates. The linkage member includes a rotating rod and a pushing rod. There are two rotating rods and two pushing rods. The central positions of the two rotating rods are hinged to each other and are rotationally clamped with the inner wall of the dewatering tank. The two pushing rods are respectively located on both sides of the hinge point of the two rotating rods and are respectively slidably clamped with the two rotating rods one by one. Extension seats that penetrate through the dewatering tank and are slidably clamped with the dewatering tank are arranged on the side walls of the two pushing rods. There are two first electric push rods, and the two first electric push rods are respectively connected to the two extension seats one by one.

[0020] Explanation: During use, the two first electric push rods are used to push the corresponding extension seats closer to each other. At this time, the two pushing rods move closer to each other, causing the two rotating rods to open and pushing the two extrusion plates away from each other.

[0021] Further, rollers are rotationally clamped at the ends of the two rotating rods.

[0022] Explanation: By arranging rollers on the rotating rods, it is beneficial to reduce the frictional resistance between the rotating rods and the extrusion plates and reduce the power loss of the first electric push rods.

[0023] Further, several extrusion members are provided. Each extrusion member is arranged in parallel inside the dewatering tank. The number of linkage members corresponds to the number of extrusion members. The extension seats are connected by a sliding beam. The first electric push rod is connected to the sliding beam at the corresponding position.

[0024] Explanation: By providing multiple extrusion members, it is convenient to perform decentralized dewatering treatment on the sludge, reducing the dewatering difficulty of the sludge piled up together and also reducing the energy consumption of the equipment.

[0025] The present invention also provides a method for harmless degradation of sludge. Based on the above-mentioned sludge harmless degradation equipment, it includes the following steps:

[0026] S1. Feed the sludge to be treated into the pretreatment tank, and inject clear water into the pretreatment tank to adjust the moisture content of the sludge to 45 - 55%. Then use the driving motor to drive the homogenizing plate to reciprocate inside the pretreatment tank, and use the homogenizing plate to stir the sludge to improve the fluidity of the sludge.

[0027] S2, using the first sludge pump to introduce the sludge in the pretreatment tank into the degradation tank, injecting the microbial agent into the degradation tank, and using the air dissolving tank to inject the flotation water into the sludge through the air dissolving nozzle, so that bubbles moving upward are generated in the sludge; the oily pollutants in the sludge move to the sludge liquid surface under the action of the bubbles, and the oily pollutants are salvaged and collected by using the salvage component; the microbial agent diffuses into the sludge under the action of the flotation water, and the hydrocarbon pollutants in the sludge are decomposed by the microbial agent; wherein the microbial agent is prepared by mixing Microbacterium phylloides, Pseudomonas putida, and Microbacterium stutzeri in a volume ratio of 1:1:2, and the dosage of the microbial agent is 0.005~0.009mg / L;

[0028] S3. Inject an oxidant into the degradation tank. The oxidant diffuses into the sludge under the action of the flotation water to oxidize and decompose the pollutants in the sludge. The oxidant is a hydrogen peroxide solution with a volume concentration of 15-20%, and the dosage of the oxidant is 0.01-0.04 ml / L.

[0029] S4. Use the second sludge pump to guide the sludge inside the degradation box into the extrusion component, use the first electric push rod to drive the linkage component, and use the linkage component to make the extrusion component move to extrude and dehydrate the sludge.

[0030] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects:

[0031] First, the present invention achieves harmless and reduced sludge treatment by subjecting the sludge to microbial degradation, chemical oxidation and mechanical dehydration treatment. At the same time, the microbial agents and oxidants used in the present invention will not cause secondary pollution to the sludge. Compared with traditional sludge treatment equipment, the present invention has the advantages of mild treatment conditions, safety and high efficiency.

[0032] Second, the present invention utilizes the principle of air flotation, which can not only improve the diffusion uniformity of microbial agents and oxidants in the sludge, but also enable the oily pollutants in the sludge to be discharged along with the bubbles, thereby reducing the difficulty of sludge treatment and improving the treatment efficiency;

[0033] Third, the present invention pre-treats the sludge through the pre-treatment component, which can crush the large particle impurities in the sludge, effectively improve the fluidity of the sludge, and lay the foundation for the microbiological, chemical and dehydration treatment of the sludge; at the same time, during the pre-treatment process, the insoluble substances in the sludge are collected and discharged, reducing the difficulty of subsequent sludge treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a longitudinal sectional view of the apparatus of the present invention;

[0035] Figure 2 is a front view of the device of the present invention;

[0036] Figure 3 is the top view of the device of the present invention;

[0037] Figure 4 is the present invention Figure 1 a partially enlarged schematic view of location A in the present invention;

[0038] Figure 5 is the present invention Figure 3 a partially enlarged schematic view of location B in the present invention;

[0039] Figure 6 is the connection schematic diagram of the connecting shaft and the homogeneous plate of the present invention;

[0040] Figure 7 is the distribution diagram of the crushing knives on the rotating drum of the present invention;

[0041] Figure 8 is the connection schematic diagram of the auxiliary motor and the pushing rack of the present invention;

[0042] Figure 9 is the connection schematic diagram of the fishing frame and the lifting motor of the present invention;

[0043] Figure 10 is the structural schematic diagram of the fishing member of the present invention;

[0044] Figure 11 is the distribution diagram of the movable perforated plate on the fishing frame of the present invention;

[0045] Figure 12 is the structural schematic diagram of the linkage member of the present invention;

[0046] Among them, 1 - pretreatment component, 10 - pretreatment tank, 100 - water inlet flange, 101 - vertical plate, 11 - homogenizing plate, 110 - through groove, 111 - threaded seat, 112 - follower seat, 12 - pushing motor, 120 - main sprocket, 13 - moving lead screw, 130 - small sprocket, 14 - connecting shaft, 140 - connecting gear, 141 - rotating mesh cylinder, 1410 - collection tank, 142 - crushing knife, 15 - pushing rack, 16 - auxiliary motor, 160 - eccentric turntable, 161 - hinged rod, 17 - sealing door, 2 - combined degradation component, 20 - degradation tank, 200 - sewage discharge hopper, 201 - chemical addition pipe, 202 - partition board, 21 - dissolved air tank, 210 - dissolved air nozzle, 22 - fishing component, 220 - fishing frame, 2200 - transfer hole, 221 - porous plate assembly, 2210 - movable porous plate, 2211 - T-shaped plate, 2212 - pushing cross beam, 222 - second electric push rod, 223 - fixing plate, 2230 - threaded sleeve, 23 - lifting motor, 230 - lifting lead screw, 24 - first sludge pump, 25 - scraper, 250 - U-shaped frame, 251 - third electric push rod, 3 - dehydration component, 30 - dehydration tank, 300 - sludge discharge port, 301 - drainage port, 31 - extrusion component, 310 - extrusion tank, 311 - extrusion plate, 312 - dehydration screen plate, 32 - linkage component, 320 - rotating rod, 3200 - roller, 321 - pushing rod, 322 - extension seat, 323 - sliding beam, 33 - first electric push rod, 34 - second sludge pump. Detailed implementation manners

[0047] Example 1: As Figure 1 , Figure 3 , Figure 5 shown, a sludge harmless degradation device includes a pretreatment component 1, a combined degradation component 2 connected to the pretreatment component 1, and a dehydration component 3 connected to the combined degradation component 2; the pretreatment component 1 includes a pretreatment tank 10, a homogenizing plate 11 slidably clamped inside the pretreatment tank 10, and a pushing motor 12 provided at the top of the pretreatment tank 10 to provide power for the homogenizing plate 11; a water inlet flange 100 is provided on the outer side wall of the pretreatment tank 10; several through grooves 110 are provided through the homogenizing plate 11, and two threaded seats 111 are provided at the top of the homogenizing plate 11, which respectively penetrate through the pretreatment tank 10 and are slidably clamped with the pretreatment tank 10; two moving lead screws 13 are rotatably clamped to the top of the pretreatment tank 10 through vertical plates 101; the two moving lead screws 13 are respectively threadedly connected to the two threaded seats 111 in a one-to-one correspondence, and small sprockets 130 are provided at the ends of the two moving lead screws 13; the output end of the pushing motor 12 is connected with a main sprocket 120, and the main sprocket 120 is connected to the two small sprockets 130 through a chain drive;

[0048] As Figure 1 , Figure 2 , Figure 3As shown in the figure, the combined degradation component 2 includes a degradation tank 20, a dissolved air tank 21 arranged at the bottom inside the degradation tank 20, a salvage member 22 arranged at the top inside the degradation tank 20, a lifting motor 23 arranged at the top end of the degradation tank 20 and providing lifting power for the salvage member 22, and a first sludge pump 24 arranged on the outer side wall of the degradation tank 20 and communicating with the pretreatment tank 10 and the degradation tank 20 respectively; a sewage discharge hopper 200 is arranged on the upper end face of the outer side wall of the degradation tank 20, and a chemical addition pipe 201 is arranged at the top end; a partition plate 202 is arranged at the lower end inside the degradation tank 20; several dissolved air nozzles 210 are equidistantly distributed on the partition plate 202; the dissolved air tank 21 is connected to each dissolved air nozzle 210 through a conduit; the input end of the first sludge pump 24 is communicated with the lower end inside the pretreatment tank 10 through a conduit, and the output end of the first sludge pump 24 is communicated with the upper end inside the degradation tank 20 through a conduit; the salvage member 22 is a prior art;

[0049] As Figure 1 , Figure 2 shown in the figure, the dehydration component 3 includes a dehydration tank 30, an extrusion member 31 and a linkage member 32 arranged inside the dehydration tank 30, a first electric push rod 33 arranged on the outer side wall of the dehydration tank 30 and providing power for the linkage member 32, and a second sludge pump 34 arranged at the top end of the degradation tank 20 and communicating with the degradation tank 20 and the extrusion member 31 respectively; a sludge discharge port 300 and a water discharge port 301 are arranged at the lower end of the outer side wall of the dehydration tank 30; the input end of the second sludge pump 34 is communicated with the lower end inside the degradation tank 20 through a conduit, and the output end of the second sludge pump 34 is communicated with the inside of the extrusion member 31 through a conduit, wherein both the extrusion member 31 and the linkage member 32 are prior arts.

[0050] Embodiment 2: This embodiment describes a method for harmless degradation of sludge. Based on the sludge harmless degradation device of Embodiment 1, it includes the following steps:

[0051] S1. Feed the sludge to be treated into the pretreatment tank 10 through the water inlet flange 100, and inject clear water into the pretreatment tank 10 to adjust the moisture content of the sludge to 45%; then drive the main sprocket 120 to rotate by using the driving motor 12. At this time, the small sprocket 130 drives the moving lead screw 13 to rotate, and due to the connection between the threaded seat 111 and the moving lead screw 13, the homogenizing plate 11 reciprocates inside the pretreatment tank 10, and the sludge is agitated by using the homogenizing plate 11 to improve the fluidity of the sludge;

[0052] S2, using the first sludge pump 24 to introduce the sludge in the pretreatment box 10 into the degradation box 20, injecting the microbial agent into the degradation box 20 through the dosing pipe 201, and using the air dissolving tank 21 to inject the flotation water into the sludge through the air dissolving nozzle 210, so that bubbles moving upward are generated in the sludge; the oily pollutants in the sludge move to the sludge liquid surface under the action of the bubbles, and the oily pollutants are salvaged and collected by the salvage component 22; and the pollutants collected by the salvage component 22 are discharged through the sewage hopper 200; the microbial agent diffuses into the sludge under the action of the flotation water, and the hydrocarbon pollutants in the sludge are decomposed by the microbial agent; wherein the microbial agent is prepared by mixing Microbacterium phylloides, Pseudomonas putida, and Microbacterium stutzeri in a volume ratio of 1:1:2, and the dosage of the microbial agent is 0.005 mg / L;

[0053] S3, injecting an oxidant into the degradation box 20 through the dosing pipe 201, the oxidant diffuses into the sludge under the action of the flotation water, and oxidizes and decomposes the pollutants in the sludge; wherein the oxidant is hydrogen peroxide with a volume concentration of 15%, and the dosage of the oxidant is 0.01 ml / L;

[0054] S4. The sludge in the degradation box 20 is introduced into the extrusion member 31 by the second sludge pump 34. The linkage member 32 is driven by the first electric push rod 33. The extrusion member 31 is moved by the linkage member 32 to extrude and dehydrate the sludge. The water removed from the sludge is discharged through the drainage port 301, and the dehydrated sludge is discharged through the sludge discharge port 300.

[0055] Example 3: This example describes a method for harmless degradation of sludge, which is based on a sludge harmless degradation device of Example 1, and differs from Example 2 in that:

[0056] In step S1, the sludge moisture content is adjusted to 55%;

[0057] In step S2, the dosage of the microbial agent is 0.009 mg / L;

[0058] In step S3, the oxidant is hydrogen peroxide with a volume concentration of 20%, and the dosage of the oxidant is 0.04 ml / L.

[0059] Embodiment 4: This embodiment differs from Embodiment 1 in that Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8As shown in the figure, 13 connecting shafts 14 are arranged side by side up and down in the middle of the homogeneous plate 11. Connecting gears 140 located inside the homogeneous plate 11 are sleeved on each connecting shaft 14. Rotating mesh cylinders 141 are arranged at both ends of each connecting shaft 14; Crushing knives 142 are arranged on each rotating mesh cylinder 141. A collection groove 1410 is penetrated and arranged on the rotating mesh cylinder 141 at the connection between the crushing knife 142 and the rotating mesh cylinder 141; A follower seat 112 that penetrates through the pretreatment tank 10 and is slidably clamped with the pretreatment tank 10 is arranged at the top of the homogeneous plate 11; A pushing rack 15 that penetrates through the follower seat 112 and is slidably clamped with the inner wall of the homogeneous plate 11 and is simultaneously meshed and connected with each connecting gear 140 is arranged on the follower seat 112; An auxiliary motor 16 is arranged on the follower seat 112. The output end of the auxiliary motor 16 is connected with an eccentric turntable 160. The eccentric turntable 160 and the top end of the pushing rack 15 are movably hinged through a hinge rod 161; A sealing door 17 is clamped on the outer side wall of the pretreatment tank 10.

[0060] Example 5: What this example records is a method for harmless degradation of sludge. Based on the sludge harmless degradation equipment in Example 4, the difference from Example 2 is as follows:

[0061] In step S1, during the movement of the homogeneous plate 11, the auxiliary motor 16 is used to drive the eccentric turntable 160 to rotate. At this time, under the combined action of the hinge rod 161 and the eccentric turntable 160, the pushing rack 15 reciprocates along the inner wall of the homogeneous plate 11. Each connecting shaft 14 rotates reciprocally under the meshing action of the connecting gear 140 and the pushing rack 15, and drives the corresponding rotating mesh cylinder 141 to rotate reciprocally; When the rotating mesh cylinder 141 rotates, the crushing knife 142 is used to crush large particle impurities in the sludge; At the same time, the insoluble substances in the sludge enter the inside of the rotating mesh cylinder 141 through the collection groove 1410 on the rotating mesh cylinder 141, and finally the insoluble substances collected inside the rotating mesh cylinder 141 are transferred through the sealing door 17.

[0062] Example 6: The difference between this example and Example 4 is that 20 connecting shafts 14 are provided.

[0063] Example 7: The difference between this example and Example 4 is that, as Figure 1 、 Figure 9 、 Figure 10 、 Figure 11As shown in the figure, the salvage component 22 includes a salvage frame 220, a porous plate assembly 221 movably arranged at the inner bottom of the salvage frame 220, and a second electric push rod 222 arranged inside the salvage frame 220 to provide power for the porous plate assembly 221; a transfer hole 2200 is arranged on the side wall of the salvage frame 220 corresponding to the position of the sewage discharge hopper 200, and a fixing plate 223 is arranged at the center of the inner bottom of the salvage frame 220, and a threaded sleeve 2230 is arranged on the fixing plate 223; there are 4 porous plate assemblies 221, and they are evenly distributed on both sides of the fixing plate 223; each porous plate assembly 221 is composed of two movable porous plates 2210, and one side of the two movable porous plates 2210 close to each other is movably hinged through a T-shaped plate 2211, and the two movable porous plates 2210 at both ends are respectively slidably clamped with the inner side wall of the salvage frame 220; a pushing cross beam 2212 connected to each T-shaped plate 2211 at the same time is arranged inside the salvage frame 220; the second electric push rod 222 is connected to the lower bottom surface of the pushing cross beam 2212; the output end of the lifting motor 23 is connected with a lifting lead screw 230 that penetrates through the degradation tank 20 and is threadedly connected with the threaded sleeve 2230; during the movement of the salvage frame 220, it can not only collect the pollutants floating on the surface of the sludge, but also promote the uniformity of the mixing of the microbial inoculant, the oxidant and the sludge.

[0064] Example 8: This example records a method for harmless degradation of sludge. Based on the sludge harmless degradation device in Example 7, the difference from Example 5 is as follows:

[0065] In step S2, the specific working principle of the salvage component 22 is as follows: The lifting motor 23 drives the lifting lead screw 230 to rotate, and the salvage frame 220 moves up and down along the inner wall of the degradation tank 20 under the combined action of the threaded sleeve 2230 and the lifting lead screw 230; during the descending process of the salvage frame 220, the second electric push rod 222 is used to drive the pushing cross beam 2212 to move upward. At this time, the two movable porous plates 2210 connected by the T-shaped plate 2211 approach each other, opening the bottom of the salvage frame 220; during the ascending process of the salvage frame 220, the second electric push rod 222 is used to drive the pushing cross beam 2212 to move downward. At this time, the movable porous plate 2210 closes the bottom of the salvage frame 220, and the movable porous plate 2210 is used to block the pollutants floating on the surface of the sludge.

[0066] Example 9: The difference between this example and Example 7 is that there are 6 porous plate assemblies 221.

[0067] Example 10: The difference between this example and Example 7 is that, as Figure 3 、 Figure 9 shown, a scraper 25 is slidably clamped at the inner bottom of the degradation tank 20, a U-shaped frame 250 connected to the scraper 25 is slidably clamped on the outer side wall of the degradation tank 20, and a third electric push rod 251 connected to the U-shaped frame 250 is arranged on the outer side wall of the degradation tank 20.

[0068] Example 11: This example describes a method for harmless degradation of sludge. Based on the sludge harmless degradation device in Example 10, the difference from Example 8 is as follows:

[0069] In step S2, when the fishing frame 220 moves to the inner top of the degradation tank 20, the third electric push rod 251 is used to push the U-shaped frame 250 to move. At this time, the scraper 25 moves inside the degradation tank 20 to scrape the pollutants fished at the inner bottom of the fishing frame 220, and the scraped pollutants are discharged through the sewage hopper 200.

[0070] Example 12: The difference between this example and Example 10 is that, as Figure 1 shown, the extrusion member 31 includes two extrusion boxes 310 symmetrically arranged inside the dehydration tank 30 and extrusion plates 311 respectively and movably clamped to the two extrusion boxes 310; one end of the extrusion box 310 is open, and the other end is provided with a dehydration screen plate 312. The open ends of the two extrusion boxes 310 are close to each other, and the two extrusion plates 311 are respectively and movably clamped to the open ends of the two extrusion boxes 310; the output end of the second sludge pump 34 is communicated with the inside of the extrusion box 310 through a conduit.

[0071] Example 13: This example describes a method for harmless degradation of sludge. Based on the sludge harmless degradation device in Example 12, the difference from Example 11 is as follows:

[0072] In step S4, the first electric push rod 33 is used to drive the linkage member 32, and the linkage member 32 is used to push the two extrusion plates 311 away from each other to extrude the sludge inside the two extrusion boxes 310. The water in the sludge passes through the dehydration screen plate 312 and then is discharged through the drain port 301, and the dehydrated sludge is discharged through the sludge discharge port 300.

[0073] Example 14: The difference between this example and Example 12 is that, as Figure 1 、 Figure 2 、 Figure 12As shown in the figure, the linkage member 32 is arranged between two pressing plates 311. The linkage member 32 includes a rotating rod 320 and a pushing rod 321. There are two rotating rods 320 and two pushing rods 321. The central positions of the two rotating rods 320 are hinged to each other and are rotationally and snap-fitted with the inner wall of the dewatering tank 30. The two pushing rods 321 are respectively located on both sides of the hinge points of the two rotating rods 320 and are respectively slidably and snap-fitted with the two rotating rods 320 one by one. Extension seats 322 that penetrate through the dewatering tank 30 and are slidably and snap-fitted with the dewatering tank 30 are arranged on the side walls of the two pushing rods 321. There are two first electric push rods 33, and the two first electric push rods 33 are respectively connected to the two extension seats 322 one by one. Roller 3200 is rotationally and snap-fitted at the end of each of the two rotating rods 320.

[0074] Embodiment 15: This embodiment describes a method for harmless degradation of sludge. Based on the sludge harmless degradation device in Embodiment 14, the difference from Embodiment 13 is as follows:

[0075] In step S4, the two first electric push rods 33 are used to push the corresponding extension seats 322 closer to each other. At this time, the two pushing rods 321 move closer to each other, causing the two rotating rods 320 to open and pushing the two pressing plates 311 away from each other.

[0076] Embodiment 16: The difference between this embodiment and Embodiment 14 is that, as Figure 1 、 Figure 2 shown, there are 3 pressing members 31, and the pressing members 31 are arranged in parallel inside the dewatering tank 30. The number of linkage members 32 corresponds to the number of pressing members 31. The extension seats 322 are connected by a sliding beam 323, and the first electric push rod 33 is connected to the sliding beam 323 at the corresponding position.

[0077] Embodiment 17: This embodiment describes a method for harmless degradation of sludge. Based on the sludge harmless degradation device in Embodiment 16, the difference from Embodiment 15 is as follows:

[0078] In step S4, the second sludge pump 34 is used to respectively introduce the sludge inside the degradation tank 20 into each pressing tank 310. The first electric push rod 33 is used to push the sliding beam 323 at the corresponding position to move, so that each linkage member 32 is started simultaneously to perform extrusion and dehydration treatment on the sludge inside each pressing tank 310.

[0079] Embodiment 18: The difference between this embodiment and Embodiment 16 is that there are 4 pressing members 31.

[0080] It should be noted that the driving motor 12, auxiliary motor 16, dissolved air tank 21, dissolved air nozzle 210, second electric push rod 222, lifting motor 23, first sludge pump 24, third electric push rod 251, first electric push rod 33 and second sludge pump 34 used in the present invention all adopt existing technologies and are not specifically limited herein. Corresponding products can be selected according to actual needs.

Claims

1. A sludge harmless degradation device, characterized in that: The invention comprises a pretreatment component (1), a combined degradation component (2) connected to the pretreatment component (1), and a dehydration component (3) connected to the combined degradation component (2); the pretreatment component (1) comprises a pretreatment box (10), a homogenizing plate (11) slidably engaged inside the pretreatment box (10), and a driving motor (12) arranged at the top of the pretreatment box (10) and providing power to the homogenizing plate (11); The combined degradation component (2) comprises a degradation box (20), an air dissolving tank (21) arranged at the bottom of the degradation box (20), a salvaging member (22) arranged at the top of the degradation box (20), a lifting motor (23) arranged at the top of the degradation box (20) and providing lifting power for the salvaging member (22), and a first sludge pump (24) arranged on the outer wall of the degradation box (20) and connected to the pretreatment box (10) and the degradation box (20) respectively; a partition (202) is arranged at the lower end of the interior of the degradation box (20); a plurality of air dissolving nozzles (210) are evenly distributed on the partition (202); the air dissolving tank (21) is simultaneously connected to each of the air dissolving nozzles (210) via a conduit; The dehydration assembly (3) comprises a dehydration box (30), an extrusion member (31) and a linkage member (32) arranged inside the dehydration box (30), a first electric push rod (33) arranged on the outer side wall of the dehydration box (30) and providing power to the linkage member (32), and a second sludge pump (34) arranged at the top of the degradation box (20) and connected to the degradation box (20) and the extrusion member (31), respectively; The outer wall of the pretreatment box (10) is provided with a water inlet flange (100); the homogenizing plate (11) is provided with a plurality of through grooves (110), and the top of the homogenizing plate (11) is provided with two threaded seats (111) which respectively penetrate the pretreatment box (10) and are respectively slidably engaged with the pretreatment box (10); the top of the pretreatment box (10) is provided with two movable lead screws (13) which are rotatably engaged with the vertical plate (101); the two movable lead screws (13) are respectively threadedly connected to the two threaded seats (111) in a one-to-one correspondence, and the ends of the two movable lead screws (13) are both provided with small sprockets (130); the output end of the driving motor (12) is connected with a main sprocket (120), and the main sprocket (120) and the two small sprockets (130) are connected via a chain transmission; The upper end surface of the outer wall of the degradation box (20) is provided with a sewage discharge hopper (200), and the top end is provided with a dosing pipe (201); the input end of the first sludge pump (24) is connected to the lower end of the interior of the pretreatment box (10) through a conduit, and the output end of the first sludge pump (24) is connected to the upper end of the interior of the degradation box (20) through a conduit; The lower end of the outer wall of the dewatering box (30) is provided with a sludge discharge port (300) and a water discharge port (301); the input end of the second sludge pump (34) is connected to the lower end of the interior of the degradation box (20) through a conduit, and the output end of the second sludge pump (34) is connected to the interior of the extrusion member (31) through a conduit; A plurality of connecting shafts (14) are arranged in parallel in the middle of the homogenizing plate (11) in the upper and lower parts, each of the connecting shafts (14) being sleeved with a connecting gear (140) located inside the homogenizing plate (11), and a rotating net cylinder (141) is arranged at both ends of each connecting shaft (14); a crushing knife (142) is arranged on each rotating net cylinder (141), and a collecting trough (1410) is arranged on the rotating net cylinder (141) and at the connection between the crushing knife (142) and the rotating net cylinder (141); a collecting trough (1410) is arranged at the top of the homogenizing plate (11) and passes through the pretreatment box (10) and is connected to the pretreatment box (10). A follower seat (112) slidably engaged with the processing box (10); a driving rack (15) is provided through the follower seat (112) and is slidably engaged with the inner wall of the homogenizing plate (11) and is meshedly connected with each of the connecting gears (140); an auxiliary motor (16) is provided on the follower seat (112); an eccentric rotating disk (160) is connected to the output end of the auxiliary motor (16); the eccentric rotating disk (160) and the top end of the driving rack (15) are movably hinged via a hinge rod (161); a sealing door (17) is clamped on the outer wall of the pre-processing box (10); The salvage component (22) comprises a salvage frame (220), a porous plate assembly (221) movably arranged at the bottom of the salvage frame (220), and a second electric push rod (222) arranged inside the salvage frame (220) and providing power to the porous plate assembly (221); a transfer hole (2200) is arranged on the side wall of the salvage frame (220) at a position corresponding to the position of the sewage discharge bucket (200); a fixing plate (223) is arranged at the center of the bottom of the salvage frame (220); a threaded sleeve (2230) is arranged on the fixing plate (223); there are a plurality of porous plate assemblies (221) evenly distributed on both sides of the fixing plate (223); each porous plate assembly (221) is provided with a plurality of threads; The plate assembly (221) is composed of two movable porous plates (2210), the sides of the two movable porous plates (2210) close to each other are movably hinged via a T-shaped plate (2211), and the two movable porous plates (2210) located at the two ends are respectively slidably engaged with the inner side wall of the salvage frame (220); a pushing beam (2212) connected to each of the T-shaped plates (2211) is arranged inside the salvage frame (220); the second electric push rod (222) is connected to the bottom surface of the pushing beam (2212); and the output end of the lifting motor (23) is connected to a lifting screw (230) that penetrates the degradation box (20) and is threadedly connected to the threaded sleeve (2230).

2. The sludge harmless degradation equipment according to claim 1 is characterized in that: A scraper (25) is slidably engaged with the bottom of the degradation box (20), a U-shaped frame (250) connected to the scraper (25) is slidably engaged with the outer wall of the degradation box (20), and a third electric push rod (251) connected to the U-shaped frame (250) is arranged on the outer wall of the degradation box (20).

3. The sludge harmless degradation equipment according to claim 1 is characterized in that: The squeezing member (31) comprises two squeezing boxes (310) symmetrically arranged inside the dewatering box (30) and squeezing plates (311) movably connected to the two squeezing boxes (310) in a one-to-one correspondence; one end of the squeezing box (310) is open, and the other end is provided with a dewatering mesh plate (312); the open ends of the two squeezing boxes (310) are close to each other, and the two squeezing plates (311) are slidably connected to the open ends of the two squeezing boxes (310) in a one-to-one correspondence; the output end of the second sludge pump (34) is connected to the inside of the squeezing box (310) through a conduit.

4. The sludge harmless degradation equipment according to claim 3 is characterized in that: The linkage member (32) is arranged between the two extrusion plates (311), and the linkage member (32) comprises a rotating rod (320) and a pushing rod (321); two rotating rods (320) and two pushing rods (321) are provided, and the centers of the two rotating rods (320) are hinged to each other and are rotatably engaged with the inner wall of the dehydration box (30); the two pushing rods (321) are respectively located on both sides of the hinge points of the two rotating rods (320), and are respectively slidably engaged with the two rotating rods (320) in a one-to-one correspondence; the side walls of the two pushing rods (321) are provided with an extension seat (322) that penetrates the dehydration box (30) and is slidably engaged with the dehydration box (30); two first electric push rods (33) are provided, and the two first electric push rods (33) are respectively connected to the two extension seats (322) in a one-to-one correspondence.

5. The sludge harmless degradation equipment according to claim 4 is characterized in that: The ends of the two rotating rods (320) are both rotatably engaged with rollers (3200).

6. The sludge harmless degradation equipment according to claim 4 is characterized in that: A plurality of the extrusion members (31) are provided, and each of the extrusion members (31) is arranged in parallel inside the dehydration box (30), and the number of the linkage members (32) corresponds to the number of the extrusion members (31); each of the extension seats (322) is connected via a sliding beam (323), and the first electric push rod (33) is connected to the sliding beam (323) at a corresponding position.

7. A method for harmless degradation of sludge, based on a sludge harmless degradation device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, passing the sludge to be treated into the interior of the pretreatment box (10), and injecting clean water into the interior of the pretreatment box (10) to adjust the moisture content of the sludge to 45-55%; then using the driving motor (12) to drive the homogenizing plate (11) to move back and forth inside the pretreatment box (10), and using the homogenizing plate (11) to stir the sludge to improve the fluidity of the sludge; S2, using a first sludge pump (24) to guide the sludge in the pretreatment box (10) into the degradation box (20), injecting a microbial agent into the degradation box (20), and using an air dissolving tank (21) to inject flotation water into the sludge through an air dissolving nozzle (210), so that bubbles that move upward are generated in the sludge; The oily pollutants in the sludge are moved to the sludge liquid surface under the action of the bubbles, and the oily pollutants are salvaged and collected by using a salvaging component (22); The microbial agent diffuses into the sludge under the action of the air flotation water, and the hydrocarbon pollutants in the sludge are decomposed by the microbial agent; wherein the microbial agent is prepared by mixing Microbacterium phylloides, Pseudomonas putida, and Microbacterium stutzeri in a volume ratio of 1:1:2, and the dosage of the microbial agent is 0.005-0.009 mg / L; S3, injecting an oxidant into the degradation box (20), the oxidant diffuses into the sludge under the action of the flotation water, and oxidizes and decomposes the pollutants in the sludge; wherein the oxidant is hydrogen peroxide with a volume concentration of 15-20%, and the dosage of the oxidant is 0.01-0.04 ml / L; S4. Using the second sludge pump (34) to guide the sludge inside the degradation box (20) into the extrusion component (31), using the first electric push rod (33) to drive the linkage component (32), and using the linkage component (32) to cause the extrusion component (31) to move, thereby performing an extrusion and dehydration process on the sludge.

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