A kind of sludge slurry resource regeneration treatment equipment and treatment method

Abstract

The present invention relates to the technical field of sludge treatment, and specifically to a sludge slurry resource recycling and regeneration treatment equipment and a treatment method; the equipment includes two treatment barrels and a mixing barrel arranged side by side, and a stirring mud transportation assembly is provided above the two treatment barrels, and the tops of the two stirring mud transportation assemblies are connected with a herringbone guide rail, and the stirring mud transportation assembly slides along the guide rail and docks with the top of the mixing barrel. The method includes the following steps: S1, sludge slurry injection; S2, sludge slurry gel breaking treatment; S3, mud cake filtration; S4, mud cake transportation; S5, mud cake processing. The present invention can perform filtration and cake making treatment on sludge slurry in sections and continuously, ensuring that the treated mud cake meets the standard indicators of road filling materials, and can complete the dehydration, filtration, cake making and mixing of sludge slurry near the construction site to obtain high-quality filling materials that meet the requirements, which can be directly used as filling for nearby roads or roads leading to well sites.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and in particular to a sludge slurry resource regeneration treatment device and a treatment method. Background Art

[0002] ‌Sludge treatment‌ is the process of reducing, stabilizing and harmlessly treating sludge. The treated sludge can be finally disposed of through land utilization, landfill and building material utilization to achieve long-term stability and no adverse effects on the ecological environment. ‌Sludge resource utilization refers to the transformation of sludge from waste to usable resources after proper treatment. Sludge contains a large amount of organic matter and rich nutrients such as nitrogen and phosphorus, but it also contains a variety of toxic substances, heavy metals, pathogenic bacteria and other harmful substances. Therefore, if sludge is discharged and piled up without proper treatment, it will cause serious pollution to the surrounding environment.

[0003] Sludge generated at construction sites, such as subway construction sludge and drilling construction sludge, generally contains a variety of complex pollutants or chemical components. If it is not properly treated and directly injected into the stratum or nearby surface, it will cause damage to the surrounding environment. At the same time, the waste residue or mud cake formed after solid-liquid separation will also bring new safety hazards if it is not properly treated in time.

[0004] Highway construction can be one of the good destinations for treated sludge. Using the treated sludge as road filling material can not only realize waste utilization, but also eliminate the adverse impact on the environment. It has a wide source and low cost, which is of great significance to environmental protection and economic development.

[0005] In the prior art, some people have studied this, especially in the preparation of mud cakes in the mud-water separation stage. For example, the utility model patent with patent publication number CN215275926U provides a plate-and-frame filter press with a mud cake fixing mechanism, including a mounting frame, an oil pressure device, a first pressing plate, a second pressing plate, a filter plate, a mud cake receiving bucket and a mud cake fixing mechanism. The oil pressure device is fixedly mounted at one end of the mounting frame, the output end of the oil pressure device is fixedly connected to the first pressing plate, the first pressing plate is slidably mounted on the inner side of the mounting frame, the mud cake receiving bucket is located below the filter plate and is fixedly connected to the mounting frame, the bottom end of the mud cake receiving bucket is provided with a discharge port, and the mud cake fixing mechanism is installed below the discharge port. Although the patent improves the processing efficiency of the mud cake, the equipment still has some disadvantages or limitations when the subsequent use conditions of the mud cake are unclear. It cannot be used to add drugs synchronously when making mud cakes or cannot achieve continuous processing. Therefore, it is not suitable for processing and resource utilization of sludge slurry generated at construction sites.

[0006] In order to solve the above problems, the present invention provides a sludge slurry resource regeneration treatment device and method specifically for meeting road filling standards for sludge extracted in sections at construction sites. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a sludge slurry resource regeneration treatment device and a treatment method.

[0008] A sludge slurry resource recycling and treatment equipment, comprising two treatment barrels and a mixing barrel arranged side by side, a stirring mud transport assembly is provided above the two treatment barrels, the tops of the two stirring mud transport assemblies are connected with a herringbone guide rail, and the stirring mud transport assembly slides along the guide rail and docks with the top of the mixing barrel;

[0009] The stirring mud transport assembly includes a motor group slidably connected to the guide rail, a lifting rod is provided below the motor group, a movable pressing plate is provided at the end of the lifting rod, a telescopic rod group is provided at the center of the bottom of the movable pressing plate, a plurality of stirring rods are provided in the middle of the telescopic rod group, a baffle is provided at the bottom of the telescopic rod group, and a through hole is provided on the baffle;

[0010] A reaction chamber is provided inside the treatment barrel. The reaction chamber is wide at the top and narrow at the bottom. A circle of filter screen is provided on the top of the reaction chamber. The middle of the reaction chamber is connected to the movable pressure plate for compacting sludge. A guide hole connected to the baffle is provided at the bottom of the reaction chamber, and a check valve is provided at the bottom of the guide hole.

[0011] Furthermore, the cross-section of the middle and upper part of the filter screen is circular, the cross-section of the connection between the filter screen and the reaction chamber transitions to a rectangle, and the two side walls of the middle part of the reaction chamber are narrowed and inclined from top to bottom, and the movable pressure plate includes a main pressure plate fixedly connected to the bottom of the lifting rod, and a secondary pressure plate located inside the slide groove on both sides of the main pressure plate, the inner side of the secondary pressure plate is connected to the inner side of the slide groove through a spring, and the secondary pressure plate slides along the slide groove when slidingly docking with the side wall of the middle part of the reaction chamber, and the lower part of the end of the secondary pressure plate is provided with an arc chamfer.

[0012] Description: By optimizing the internal structure of the reaction chamber, it can cooperate with the movable pressure plate to complete the filtration of sludge slurry. The movable pressure plate can automatically shrink or reset, and the reset transition is smooth and will not damage the mud cake.

[0013] Furthermore, the telescopic rod group includes a telescopic inner rod fixedly connected to the bottom center of the movable pressure plate, and a telescopic outer rod located below the telescopic inner rod and slidably connected to it, and each of the stirring rods is arranged at equal circumferential intervals on the top of the telescopic outer rod.

[0014] Description: By optimizing the structure of the telescopic rod group, the stirring rod can not only play the role of stirring and be located at a suitable stirring position, but also play the role of fixing the mud cake and keeping the mud cake stable when it is transported.

[0015] Furthermore, a T-slot is provided on each side of the bottom of the guide rail for sliding the motor group, and the motor group includes a driving motor, a rotating motor and a lifting motor from top to bottom. A roller is provided at the output end of the driving motor, and the roller is located inside the T-slot and is rollingly connected to the T-slot. The output end of the rotating motor is fixedly connected to the lifting motor, and the output end of the lifting motor is fixedly connected to the top of the lifting rod.

[0016] Description: The guide rail can stably drive the stirring and mud transporting assembly to move, and maintain the stability of the stirring and mud transporting assembly when it is rotating and stirring.

[0017] Furthermore, a vibrator is provided on the guide rail at the intersection of the two T-slot ends, and a fixing rod is provided at each of the three end points of the guide rail, and the bottom of the fixing rod is fixedly connected to the ground where the processing barrel and the mixing barrel are located.

[0018] Description: The vibrator can vibrate the stirring and transporting mud component carrying the mud cake that has been moved here, so that the mud cake falls off into the mixing barrel.

[0019] Furthermore, a drainage pipe is provided at the bottom of one side of the processing barrel, a mud discharge pipe is provided at the bottom of one side of the mixing barrel, a groove docking with the baffle is provided at the top of the guide hole, and a filter is provided inside the groove.

[0020] Note: The filter screen can cooperate with the through holes on the baffle to complete the drainage work during mud cake filtration.

[0021] Furthermore, a stirring motor is provided at the bottom of the mixing barrel, and an output end of the stirring motor extends to the inside of the mixing barrel and a stirring plate is provided.

[0022] Description: The mud cake in the mixing barrel is mixed with other inorganic binders through the stirring plate.

[0023] The present invention also provides a method for recycling and regenerating sludge, based on the above-mentioned sludge recycling and regenerating equipment, comprising the following steps:

[0024] S1. Sludge injection: inject sludge with a water content of 10-30% into one of the treatment barrels, then add 1-2 times of water by weight of the sludge, and add 3-5% of polyaluminium chloride powder by weight of the sludge;

[0025] S2. Sludge degumming treatment: Turn on the motor group of the stirring and transporting assembly above the treatment barrel filled with sludge, so that it drives the lifting rod to descend, and at the same time drives the movable pressure plate to descend, so that the movable pressure plate is located at the filter screen to play an auxiliary stirring role. At this time, the telescopic rod group is in a fully stretched state, the stirring rod is located inside the reaction bin to play a main stirring role, and the baffle is located above the diversion hole to play an auxiliary stirring role. The motor group drives the movable pressure plate, the stirring rod and the baffle to rotate to stir the sludge in the treatment barrel so that it is fully mixed with the polyaluminium chloride powder. The diversion hole and the filter screen realize the up and down circulation of the water flow inside the treatment barrel, and at the same time, the sludge particles are retained inside the reaction bin, and the sewage is located outside the reaction bin. The stirring treatment is continued for 2~4h to degumming and flocculate the sludge and let it stand for 1~2h, and then the sewage is discharged, leaving the sludge particles inside the reaction bin;

[0026] S3, mud cake filter pressing: turn on the motor group again to drive the lifting rod to continue to descend, so that the movable pressure plate enters the reaction chamber, and the movable pressure plate continues to descend along the inner wall of the reaction chamber to compact the dehydrated sludge particles. The water squeezed out during the compaction process is discharged through the diversion hole, and the check valve prevents water from flowing back. At the same time, the baffle is connected to the diversion hole, and the through hole on the baffle continues to discharge the filtered water. The lifting rod continues to descend to shrink the telescopic rod group, and the stirring rod is located in the middle and lower part of the reaction chamber until the movable pressure plate completely compacts the sludge particles. Keep it still for 15-20 minutes to form a mud cake;

[0027] S4, mud cake transportation: turn on the motor group again to drive the lifting rod to rise, take out the mud cake after filtration, the movable pressing plate, stirring rod and baffle plate work together to keep the shape of the mud cake stable to prevent it from falling off, turn on the motor group to move the stirring mud transport component to the top of the mixing barrel, make the mud cake fall off and be placed in the mixing barrel through vibration, and then reset the stirring mud transport component;

[0028] S5. Mud cake processing: Add 4-6% of the total weight of the mud cake into the mixing barrel, and add water to make the moisture content of the mixed material in the mixing barrel reach 10-15%. Then stir the mixed material in the mixing barrel. After stirring for 1-2 hours, add 3-4% of the total weight of the mud cake in lime powder, continue stirring for 1-2 hours, and discharge the mixed material for reuse.

[0029] Furthermore, in S1 to S4, the two processing buckets work together, and when one of the processing buckets is performing the operations of S1 to S3, the other processing bucket is performing the operation of S4.

[0030] Note: By setting up two treatment barrels and working together, continuous treatment of sludge can be achieved, and it can also effectively deal with construction conditions where subway construction sludge and drilling construction sludge are not extracted all at once but in sections.

[0031] Furthermore, the stirring speed in S2 is 60-80 rpm, and the stirring speed in S5 is 40-50 rpm.

[0032] Note: By optimizing and adjusting the stirring speed in S2, the degelling and flocculation treatment of the sludge slurry can be achieved, and by optimizing and adjusting the stirring speed in S5, the uniform mixing of the mud cake and the inorganic binder can be achieved.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) The sludge resource recycling and treatment equipment of the present invention is equipped with two treatment barrels, which can perform filter pressing and cake making treatment on the sludge in sections and continuously, ensuring that the treated mud cake meets the standard indicators of road filling materials, especially for subway construction sludge and drilling construction sludge. It can complete the dehydration, filter pressing, cake making and mixing of sludge near the construction site to obtain high-quality filling materials that meet the requirements, which can be directly used as filling for nearby roads or roads leading to the well site. It is easy to use, has high work efficiency, can save manpower and material costs, and is conducive to promotion and use.

[0035] (2) The structural setting of the stirring and transporting components in the sludge resource recycling and treatment equipment of the present invention is one of the main innovations. It can not only cooperate with the structure of the reaction chamber to complete the stirring, degelling and flocculation of the sludge, but also complete the transportation of the pressed mud cake, so that the mud cake can be smoothly transferred to the mixing barrel for the next step of treatment.

[0036] (3) The sludge slurry resource recycling treatment of the present invention is based on the equipment of the present invention, and optimizes and adjusts the specific parameters as well as the materials and specific steps of degelling flocculation and inorganic binder mixing. It can achieve segmented continuous treatment of sludge slurry while maximizing the function of the equipment of the present invention. It is efficient, fast and has good treatment effect, and meets the standard specifications of road filling materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of a sludge slurry resource regeneration treatment device of the present invention;

[0038] Figure 2 This is a top view of a sludge slurry resource regeneration treatment device of the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of the stirring and transporting mud component inside the treatment barrel of a sludge slurry resource recycling and regeneration treatment device of the present invention;

[0040] Figure 4 It is a side view structural schematic diagram of a sludge slurry resource regeneration treatment device of the present invention when performing S1;

[0041] Figure 5 It is a side view structural schematic diagram of a sludge slurry resource regeneration treatment device of the present invention when performing S2;

[0042] Figure 6 It is a side view structural schematic diagram of a sludge slurry resource regeneration treatment device of the present invention when performing S3;

[0043] Figure 7 It is a schematic diagram of the mud cake clamping state of a sludge slurry resource regeneration treatment device of the present invention when performing S4;

[0044] Figure 8 It is a schematic diagram of the structure of the motor group inside the treatment barrel of a sludge slurry resource regeneration treatment device of the present invention;

[0045] Fig. 9 It is a schematic diagram of the guide rail bottom structure of a sludge slurry resource regeneration treatment device of the present invention;

[0046] Fig.10 It is a schematic diagram of the structure of the movable pressure plate inside the treatment barrel of a sludge slurry resource recycling and regeneration treatment device of the present invention;

[0047] Fig.11 It is a schematic diagram of the structure of a mixing barrel of a sludge slurry resource recycling and regeneration treatment device of the present invention;

[0048] Fig.12 The present invention is a flow chart of a sludge slurry resource regeneration treatment method.

[0049] In the figure: 1-treatment barrel, 11-reaction chamber, 12-filter screen, 13-guide hole, 14-check valve, 15-drain pipe, 16-groove, 17-filter screen, 2-mixing barrel, 21-mud discharge pipe, 3-stirring and mud transporting assembly, 31-motor group, 311-drive motor, 312-rotating motor, 313-lifting motor, 314-roller, 32-lifting rod, 33-movable pressure plate, 331-main pressure plate, 332-auxiliary pressure plate, 333-slide, 334-spring, 34-telescopic rod group, 341-telescopic inner rod, 342-telescopic outer rod, 35-stirring rod, 36-baffle, 361-through hole, 4-guide rail, 41-T-slot, 42-vibrator, 43-fixed rod, 5-stirring motor, 51-stirring plate. DETAILED DESCRIPTION

[0050] In order to further illustrate the method adopted by the present invention and the effect achieved, the technical solution of the present invention will be clearly and completely described in combination with experiments below.

[0051] Example 1: This example describes a sewage sludge recycling and treatment device. Figure 1As shown, it includes two processing barrels 1 and a mixing barrel 2 arranged side by side, a drainage pipe 15 is provided at the bottom of one side of the processing barrel 1, and a mud discharge pipe 21 is provided at the bottom of one side of the mixing barrel 2. A stirring mud transport component 3 is provided above the two processing barrels 1. The tops of the two stirring mud transport components 3 are connected with a herringbone guide rail 4. The stirring mud transport components 3 slide along the guide rail 4 and dock with the top of the mixing barrel 2, as shown in FIG. Fig.11 As shown, a stirring motor 5 is provided at the bottom of the mixing barrel 2, and an output end of the stirring motor 5 extends to the inside of the mixing barrel 2 and a stirring plate 51 is provided. The stirring motor 5 is a commercially available product;

[0052] like Figure 2 and Figure 3 As shown, the stirring mud transporting assembly 3 includes a motor group 31 slidably connected to the guide rail 4, a lifting rod 32 is provided below the motor group 31, a movable pressing plate 33 is provided at the end of the lifting rod 32, a telescopic rod group 34 is provided at the center of the bottom of the movable pressing plate 33, a plurality of stirring rods 35 are provided in the middle of the telescopic rod group 34, a baffle 36 is provided at the bottom of the telescopic rod group 34, and a through hole 361 is provided on the baffle 36;

[0053] like Figure 1 , Figure 4 and Fig.10 As shown, a reaction chamber 11 is sleeved inside the treatment barrel 1, and the reaction chamber 11 is wide at the top and narrow at the bottom. A circle of filter screen 12 is arranged on the upper part of the reaction chamber 11, and the middle part of the reaction chamber 11 is connected to the movable pressure plate 33 for compacting the sludge slurry. A guide hole 13 connected to the baffle 36 is arranged at the bottom of the reaction chamber 11, and a check valve 14 is arranged at the bottom of the guide hole 13. A groove 16 connected to the baffle 36 is arranged at the top of the guide hole 13, and a filter screen 17 is arranged inside the groove 16. The cross section of the middle and upper part of the filter screen 12 is circular, and the filter screen 12 is connected to the movable pressure plate 33. The cross section of the connection of the reaction chamber 11 transitions to a rectangle, and the two side walls of the middle part of the reaction chamber 11 are narrowed and inclined from top to bottom. The movable pressing plate 33 includes a main pressing plate 331 fixedly connected to the bottom of the lifting rod 32, and a secondary pressing plate 332 located inside the slide grooves 333 on both sides of the main pressing plate 331. The inner side of the secondary pressing plate 332 is connected to the inner side of the slide groove 333 through a spring 334. When the secondary pressing plate 332 slides with the side wall of the middle part of the reaction chamber 11, it slides along the slide groove 333. The lower part of the end of the secondary pressing plate 332 is provided with an arc chamfer.

[0054] like Figure 6 and Figure 7 As shown, the telescopic rod group 34 includes a telescopic inner rod 341 fixedly connected to the bottom center of the movable pressing plate 33, and a telescopic outer rod 342 located below the telescopic inner rod 341 and slidably connected thereto, and each stirring rod 35 is circumferentially arranged at equal intervals on the top of the telescopic outer rod 342;

[0055] like Figure 1 , Figure 8 and Fig. 9As shown, a T-slot 41 is provided on each side of the bottom of the guide rail 4 for sliding the motor group 31. The motor group 31 includes a driving motor 311, a rotating motor 312 and a lifting motor 313 from top to bottom. The driving motor 311, the rotating motor 312 and the lifting motor 313 are all commercially available products. A roller 314 is provided at the output end of the driving motor 311. The roller 314 is located inside the T-slot 41 and is rollingly connected to the T-slot 41. The output end of the rotating motor 312 is fixedly connected to the lifting motor 313. The output end of the lifting motor 313 is fixedly connected to the top of the lifting rod 32. A vibrator 42 is provided on the guide rail 4 at the intersection of the ends of the two T-slots 41. The vibrator 42 is a commercially available product. A fixing rod 43 is provided at each of the three end points of the guide rail 4. The bottom of the fixing rod 43 is fixedly connected to the ground where the processing barrel 1 and the mixing barrel 2 are located.

[0056] Example 2: This example describes a method for recycling sludge slurry resources, based on a sludge slurry recycling and recycling equipment in Example 1. Fig.12 As shown, the following steps are included:

[0057] S1. Sludge slurry injection: inject sludge slurry with a water content of 15% into one of the treatment barrels 1, then add water 1.6 times the total weight of the sludge slurry, and add polyaluminium chloride powder 4% of the total weight of the sludge slurry;

[0058] S2, sludge degumming treatment: turn on the motor group 31 of the stirring and transporting assembly 3 above the treatment barrel 1 filled with sludge, so that it drives the lifting rod 32 to descend, and at the same time drives the movable pressing plate 33 to descend, so that the movable pressing plate 33 is located at the filter screen 12 to play an auxiliary stirring role, at this time, the telescopic rod group 34 is in a fully stretched state, the stirring rod 35 is located inside the reaction bin 11 to play a main stirring role, and the baffle 36 is located above the guide hole 13 to play an auxiliary stirring role, and the motor group 31 drives the movable pressing plate 33, the stirring rod 35 and the baffle 36 to rotate to stir the sludge in the treatment barrel 1, and the stirring speed is 70rpm, so that it is fully mixed with the polyaluminium chloride powder, and the guide hole 13 and the filter screen 12 realize the up and down circulation of the water flow inside the treatment barrel 1, and at the same time, the sludge particles are left inside the reaction bin 11, and the sewage is left outside the reaction bin 11, and the stirring treatment is continued for 3h to degumming and flocculate the sludge and let it stand for 1.5h, and then the sewage is discharged, and the sludge particles are left inside the reaction bin 11;

[0059] S3, mud cake filtration: turn on the motor group 31 again to drive the lifting rod 32 to continue to descend, so that the movable pressing plate 33 enters the reaction bin 11, and the movable pressing plate 33 continues to descend along the inner wall of the reaction bin 11 to compact the dehydrated sludge slurry particles. The water squeezed out during the compaction process is discharged through the guide hole 13, and the check valve 14 prevents water from flowing back. At the same time, the baffle 36 is docked with the guide hole 13, and the through hole 361 on the baffle 36 continues to discharge the filtered water. The lifting rod 32 continues to descend to shrink the telescopic rod group 34, and the stirring rod 35 is located in the middle and lower part of the reaction bin 11 until the movable pressing plate 33 completely compacts the sludge slurry particles. Keep it still for 18 minutes to form a mud cake;

[0060] S4, mud cake transportation: turn on the motor group 31 again to drive the lifting rod 32 to rise, take out the mud cake after the filter pressing, the movable pressure plate 33, the stirring rod 35 and the baffle 36 jointly maintain the shape of the mud cake to be stable and prevent it from falling off, turn on the motor group 31 to move the stirring and transporting mud component 3 to the top of the mixing barrel 2, and make the mud cake fall off and be placed in the mixing barrel 2 by vibration, and then reset the stirring and transporting mud component 3; it should be noted here that after the mud cake is filtered, during the rising process of the lifting rod 32, the inner wall of the reaction chamber 11 corresponding to the auxiliary pressure plate 332 gradually expands, and the auxiliary pressure plate 332 gradually slides out and resets under the action of the spring 334. At this time, the mud cake has been filtered and fixed stably, and the angle of the auxiliary pressure plate 332 remains the same. Therefore, the stability of the mud cake will not be affected during the reset process of the auxiliary pressure plate 332. When the mud cake is moved to the top of the mixing barrel 2, it will not fall off naturally, but the vibrator 42 is turned on to vibrate the stirring and transporting mud component 3 to make the mud cake fall off;

[0061] In S1-S4, two processing barrels 1 work together. When one of the processing barrels 1 is performing the operation of S1-S3, the other processing barrel 1 is performing the operation of S4;

[0062] S5. Mud cake processing: Add cement ash accounting for 5% of the total weight of the mud cake into the mixing barrel 2, and add water at the same time to make the moisture content of the mixed material in the mixing barrel 2 reach 12%, then stir the mixed material in the mixing barrel 2 at a stirring speed of 45 rpm. After stirring for 1.5 hours, add lime powder accounting for 3.5% of the total weight of the mud cake, continue stirring for 1.5 hours, and discharge the mixed material for reuse; It should be noted here that the purpose of adding water to the mixing barrel 2 is to dissolve the cement ash and fully mix the cement ash and mud cake. At this time, clean water (tap water or reused water obtained after the sewage in S2 is treated) needs to be added.

[0063] Embodiment 3: This embodiment differs from Embodiment 2 in that the specific parameters in S1 are different.

[0064] S1. Sludge slurry injection: inject sludge slurry with a water content of 30% into one of the treatment barrels 1, then add water of 1 times the total weight of the sludge slurry, and at the same time add polyaluminium chloride powder of 3% of the total weight of the sludge slurry.

[0065] Embodiment 4: This embodiment differs from Embodiment 2 in that the specific parameters in S1 are different.

[0066] S1. Sludge slurry injection: inject sludge slurry with a water content of 20% into one of the treatment barrels 1, then add water 1.5 times the total weight of the sludge slurry, and at the same time add polyaluminium chloride powder 4% of the total weight of the sludge slurry.

[0067] Embodiment 5: This embodiment differs from Embodiment 2 in that the specific parameters in S1 are different.

[0068] S1. Sludge slurry injection: inject sludge slurry with a water content of 10% into one of the treatment barrels 1, then add water twice the total weight of the sludge slurry, and at the same time add polyaluminium chloride powder at a concentration of 5% of the total weight of the sludge slurry.

[0069] Note: If the initial moisture content of the sludge slurry is high, less water is added accordingly, and less polyaluminium chloride powder is added at the same time. Conversely, if the initial moisture content of the sludge slurry is low, more water is added accordingly, and more polyaluminium chloride powder is added at the same time. The parameters in Examples 2 to 5 can be reasonably selected according to the initial moisture content of the sludge slurry.

[0070] Embodiment 6: This embodiment differs from Embodiment 2 in that the specific parameters in S2 are different.

[0071] S2. Sludge degumming treatment: turn on the motor group 31 of the stirring and transporting assembly 3 above the treatment barrel 1 filled with sludge, so that it drives the lifting rod 32 to descend, and at the same time drives the movable pressing plate 33 to descend, so that the movable pressing plate 33 is located at the filter screen 12 to play an auxiliary stirring role. At this time, the telescopic rod group 34 is in a fully stretched state, the stirring rod 35 is located inside the reaction bin 11 to play a main stirring role, and the baffle 36 is located above the guide hole 13 to play an auxiliary stirring role. The motor group 31 drives the movable pressing plate 33, the stirring rod 35 and the baffle 36 to rotate to stir the sludge in the treatment barrel 1. The stirring speed is 80rpm, so that it is fully mixed with the polyaluminium chloride powder. The guide hole 13 and the filter screen 12 realize the up and down circulation of the water flow inside the treatment barrel 1, and at the same time, the sludge particles are retained inside the reaction bin 11, and the sewage is retained outside the reaction bin 11. The stirring treatment is continued for 2 hours to degumming and flocculate the sludge and let it stand for 1 hour, and then the sewage is discharged, and the sludge particles are left inside the reaction bin 11.

[0072] Embodiment 7: This embodiment differs from Embodiment 2 in that the specific parameters in S2 are different.

[0073] S2. Sludge degumming treatment: turn on the motor group 31 of the stirring and transporting assembly 3 above the treatment barrel 1 filled with sludge, so that it drives the lifting rod 32 to descend, and at the same time drives the movable pressing plate 33 to descend, so that the movable pressing plate 33 is located at the filter screen 12 to play an auxiliary stirring role. At this time, the telescopic rod group 34 is in a fully stretched state, the stirring rod 35 is located inside the reaction bin 11 to play a main stirring role, and the baffle 36 is located above the guide hole 13 to play an auxiliary stirring role. The motor group 31 drives the movable pressing plate 33, the stirring rod 35 and the baffle 36 to rotate to stir the sludge in the treatment barrel 1. The stirring speed is 60rpm, so that it is fully mixed with the polyaluminium chloride powder. The guide hole 13 and the filter screen 12 realize the up and down circulation of the water flow inside the treatment barrel 1, and at the same time, the sludge particles are retained inside the reaction bin 11, and the sewage is retained outside the reaction bin 11. The stirring treatment is continued for 4 hours to degumming and flocculate the sludge and let it stand for 2 hours, and then the sewage is discharged, and the sludge particles are left inside the reaction bin 11.

[0074] Note: The parameter selection in Example 2, Example 6 and Example 7 is related to the total amount of sludge slurry inside the treatment barrel 1. When the treatment volume is large, the low-speed stirring in Example 7 is selected and the stirring time is appropriately extended. When the treatment volume is small, the high-speed stirring in Example 6 is selected and the stirring time is appropriately shortened.

[0075] Embodiment 8: This embodiment differs from Embodiment 2 in that the specific parameters in S3 are different.

[0076] S3, mud cake filtration: turn on the motor group 31 again to drive the lifting rod 32 to continue to descend, so that the movable pressing plate 33 enters the reaction bin 11, and the movable pressing plate 33 continues to descend along the inner wall of the reaction bin 11 to compact the dehydrated sludge slurry particles. The water squeezed out during the compaction process is discharged through the guide hole 13, and the check valve 14 prevents water from flowing back. At the same time, the baffle 36 is docked with the guide hole 13, and the through hole 361 on the baffle 36 continues to discharge the filtered water. The lifting rod 32 continues to descend to shrink the telescopic rod group 34, and the stirring rod 35 is located in the lower middle part of the reaction bin 11 until the movable pressing plate 33 completely compacts the sludge slurry particles. Keep it still for 15 minutes to form a mud cake.

[0077] Embodiment 9: This embodiment differs from Embodiment 2 in that the specific parameters in S3 are different.

[0078] S3, mud cake filtration: turn on the motor group 31 again to drive the lifting rod 32 to continue to descend, so that the movable pressing plate 33 enters the reaction bin 11, and the movable pressing plate 33 continues to descend along the inner wall of the reaction bin 11 to compact the dehydrated sludge slurry particles. The water squeezed out during the compaction process is discharged through the guide hole 13, and the check valve 14 prevents water from flowing back. At the same time, the baffle 36 is docked with the guide hole 13, and the through hole 361 on the baffle 36 continues to discharge the filtered water. The lifting rod 32 continues to descend to shrink the telescopic rod group 34, and the stirring rod 35 is located in the lower middle part of the reaction bin 11 until the movable pressing plate 33 completely compacts the sludge slurry particles. Keep it still for 20 minutes to form a mud cake.

[0079] Note: The parameter selection in Example 2, Example 8, and Example 9 is related to the total amount of sludge in the treatment barrel 1. When the treatment volume is large, the longer compaction and standing time in Example 9 is selected. When the treatment volume is small, the shorter compaction and standing time in Example 8 is selected.

[0080] Embodiment 10: This embodiment differs from Embodiment 2 in that the specific parameters in S5 are different.

[0081] S5. Mud cake processing: Add cement dust accounting for 4% of the total weight of the mud cake into the mixing barrel 2, and add water to make the moisture content of the mixed material in the mixing barrel 2 reach 10%. Then stir the mixed material in the mixing barrel 2 at a stirring speed of 40 rpm. After stirring for 2 hours, add lime powder accounting for 3% of the total weight of the mud cake, continue stirring for 1 hour, and discharge the mixed material for reuse.

[0082] Embodiment 11: This embodiment differs from Embodiment 2 in that the specific parameters in S5 are different.

[0083] S5. Mud cake processing: Add 4.5% of the total weight of the mud cake into the mixing barrel 2, and add water to make the moisture content of the mixed material in the mixing barrel 2 reach 11%. Then stir the mixed material in the mixing barrel 2 at a stirring speed of 40 rpm. After stirring for 2 hours, add 4% of the total weight of the mud cake in lime powder, continue stirring for 2 hours, and discharge the mixed material for reuse.

[0084] Embodiment 12: This embodiment differs from Embodiment 2 in that the specific parameters in S5 are different.

[0085] S5. Mud cake processing: Add 6% of the total weight of the mud cake into the mixing barrel 2, and add water to make the moisture content of the mixed material in the mixing barrel 2 reach 15%. Then stir the mixed material in the mixing barrel 2 at a stirring speed of 50 rpm. After stirring for 1 hour, add 4% of the total weight of the mud cake in lime powder, continue stirring for 1 hour, and discharge the mixed material for reuse.

Claims

1. A sludge slurry resource regeneration treatment equipment, characterized in that: It comprises two processing barrels (1) and a mixing barrel (2) arranged side by side, each of the two processing barrels (1) being provided with a stirring mud transport assembly (3), the tops of the two stirring mud transport assemblies (3) being connected with a herringbone guide rail (4), and the stirring mud transport assembly (3) sliding along the guide rail (4) and docking with the top of the mixing barrel (2); The stirring mud transport assembly (3) comprises a motor group (31) slidably connected to the guide rail (4); a lifting rod (32) is provided below the motor group (31); a movable pressing plate (33) is provided at the end of the lifting rod (32); a telescopic rod group (34) is provided at the center of the bottom of the movable pressing plate (33); a plurality of stirring rods (35) are provided in the middle of the telescopic rod group (34); a baffle (36) is provided at the bottom of the telescopic rod group (34); and a through hole (361) is provided on the baffle (36); A reaction chamber (11) is sleeved inside the treatment barrel (1), the reaction chamber (11) is wide at the top and narrow at the bottom, a filter screen (12) is arranged at the top of the reaction chamber (11), the middle of the reaction chamber (11) is connected to the movable pressure plate (33) for compacting sludge, a guide hole (13) connected to the baffle (36) is arranged at the bottom of the reaction chamber (11), and a check valve (14) is arranged at the bottom of the guide hole (13); The cross section of the middle and upper part of the filter screen (12) is circular, the cross section of the connection between the filter screen (12) and the reaction chamber (11) transitions to a rectangle, and the two side walls of the middle part of the reaction chamber (11) are narrowed and inclined from top to bottom, the movable pressure plate (33) comprises a main pressure plate (331) fixedly connected to the bottom of the lifting rod (32), and a secondary pressure plate (332) located inside the slide grooves (333) on both sides of the main pressure plate (331), the inner side of the secondary pressure plate (332) is connected to the inner side of the slide groove (333) through a spring (334), and the secondary pressure plate (332) slides along the slide groove (333) when slidingly docking with the side wall of the middle part of the reaction chamber (11), and the lower part of the end of the secondary pressure plate (332) is provided with an arc chamfer.

2. The sludge slurry resource recycling and treatment equipment according to claim 1, characterized in that: The telescopic rod group (34) comprises a telescopic inner rod (341) fixedly connected to the center of the bottom of the movable pressing plate (33), and a telescopic outer rod (342) located below the telescopic inner rod (341) and slidably connected thereto, and the stirring rods (35) are arranged at equal intervals in the circumferential direction on the top of the telescopic outer rod (342).

3. The sludge slurry resource recycling and treatment equipment according to claim 1, characterized in that: A T-shaped slot (41) for sliding the motor group (31) is provided on both sides of the bottom of the guide rail (4). The motor group (31) includes a driving motor (311), a rotating motor (312) and a lifting motor (313) in order from top to bottom. A roller (314) is provided at the output end of the driving motor (311). The roller (314) is located inside the T-shaped slot (41) and is rollingly connected to the T-shaped slot (41). The output end of the rotating motor (312) is fixedly connected to the lifting motor (313). The output end of the lifting motor (313) is fixedly connected to the top of the lifting rod (32).

4. The sludge slurry resource recycling and treatment equipment according to claim 3, characterized in that: A vibrator (42) is provided on the guide rail (4) at the intersection of the ends of the two T-slots (41), and a fixing rod (43) is provided at each of the three end points of the guide rail (4), wherein the bottom of the fixing rod (43) is fixedly connected to the ground where the processing barrel (1) and the mixing barrel (2) are located.

5. The sludge slurry resource recycling and treatment equipment according to claim 1, characterized in that: A drainage pipe (15) is provided at the bottom of one side of the treatment barrel (1), a mud discharge pipe (21) is provided at the bottom of one side of the mixing barrel (2), a groove (16) is provided at the top of the guide hole (13) and is connected to the baffle (36), and a filter screen (17) is provided inside the groove (16).

6. The sludge slurry resource recycling and treatment equipment according to claim 1, characterized in that: A stirring motor (5) is provided at the bottom of the mixing barrel (2), and an output end of the stirring motor (5) extends to the inside of the mixing barrel (2) and is provided with a stirring plate (51).

7. A method for recycling sludge, based on the sludge recycling equipment according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Sludge slurry injection: inject sludge slurry with a water content of 10-30% into one of the treatment barrels (1), then add 1-2 times the total weight of the sludge slurry of water, and at the same time add 3-5% of the total weight of the sludge slurry of polyaluminium chloride powder; S2. Sludge debonding treatment: Turn on the motor group (31) of the stirring and transporting assembly (3) above the treatment barrel (1) filled with sludge, so that it drives the lifting rod (32) to descend, and at the same time drives the movable pressing plate (33) to descend, so that the movable pressing plate (33) is located at the filter screen (12) to play an auxiliary stirring role. At this time, the telescopic rod group (34) is in a fully extended state, the stirring rod (35) is located inside the reaction chamber (11) to play a main stirring role, and the baffle (36) is located above the guide hole (13) to play an auxiliary stirring role. 31) drives the movable pressing plate (33), the stirring rod (35) and the baffle (36) to rotate and stir the sludge in the treatment barrel (1) so that the sludge is fully mixed with the polyaluminium chloride powder. The flow guide hole (13) and the filter screen (12) realize the up and down circulation of the water flow inside the treatment barrel (1) and at the same time, the sludge particles are retained inside the reaction chamber (11). The sewage is located outside the reaction chamber (11). The stirring treatment is continued for 2 to 4 hours to de-gum and flocculate the sludge and allow it to settle for 1 to 2 hours. The sewage is then discharged and the sludge particles are retained inside the reaction chamber (11). S3, mud cake filtration: the motor group (31) is turned on again to drive the lifting rod (32) to continue to descend, so that the movable pressing plate (33) enters the reaction chamber (11), and the movable pressing plate (33) continues to descend along the inner wall of the reaction chamber (11) to compact the dehydrated sludge particles. The water squeezed out during the compaction process is discharged through the diversion hole (13), and the check valve (14) prevents water from flowing back. At the same time, the baffle plate (36) is connected to the diversion hole (13), and the through hole (361) on the baffle plate (36) continues to discharge the filtered water. The lifting rod (32) continues to descend to shrink the telescopic rod group (34), and the stirring rod (35) is located in the middle and lower part of the reaction chamber (11), until the movable pressing plate (33) completely compacts the sludge particles. The mixture is kept still for 15 to 20 minutes to form a mud cake. S4, mud cake transport: the motor group (31) is turned on again to drive the lifting rod (32) to rise, and the mud cake after the filter pressing is taken out. The movable pressing plate (33), the stirring rod (35) and the baffle (36) together keep the shape of the mud cake stable to prevent it from falling off. The motor group (31) is turned on to move the stirring mud transport component (3) to the top of the mixing barrel (2), and the mud cake is vibrated to fall off and placed in the mixing barrel (2), and then the stirring mud transport component (3) is reset; S5. Mud cake processing: 4-6% of the total weight of the mud cake is added to the mixing barrel (2), and water is added at the same time so that the moisture content of the mixed material in the mixing barrel (2) reaches 10-15%. The mixed material in the mixing barrel (2) is then stirred. After stirring for 1-2 hours, 3-4% of the total weight of the mud cake is added with lime powder. The stirring is continued for 1-2 hours, and the mixed material is discharged for reuse.

8. A method for recycling sludge as claimed in claim 7, characterized in that: In the above-mentioned S1 to S4, the two processing barrels (1) work together. When one of the processing barrels (1) is performing the operation of S1 to S3, the other processing barrel (1) is performing the operation of S4.

9. A method for recycling sludge as claimed in claim 7, characterized in that: The stirring speed in S2 is 60-80 rpm, and the stirring speed in S5 is 40-50 rpm.

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