Low-temperature anaerobic fermentation method for high-solid-content sludge

Abstract

The invention relates to the technical field of environmental protection and biological fermentation, in particular to a high-solid-content sludge low-temperature anaerobic fermentation method which comprises the following steps: conveying sewage, intermittently adding chemicals into the sewage, mixing the sewage and the chemicals, directionally discharging the sewage, depositing sediments and directionally discharging the sediments. The sewage treatment device can effectively realize sufficient mixing of impurities and chemicals in sewage, can realize intermittent quantitative chemical addition to effectively ensure that the chemical addition amount corresponds to the sewage amount, can effectively stir to sufficiently ensure that the sewage and the chemicals can fully react, is convenient for sewage to sink and accumulate, can effectively enable the sewage to be subjected to anaerobic fermentation, and improves the sewage treatment efficiency. And subsequent better extrusion and accumulation are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection and biological fermentation, and in particular to a low-temperature anaerobic fermentation method for high-solid sludge. Background Art

[0002] High-solid sludge anaerobic fermentation technology refers to anaerobic fermentation technology with a solid content (TSS) of more than 10%. This fermentation technology has the advantages of small reactor size, high volumetric gas production, and low heating energy consumption, and can obtain energy substances such as hydrogen, volatile fatty acids (VFA) and methane. VFA can be used as a high-quality carbon source for biological denitrification and phosphorus removal and synthetic bioplastics. However, the preparation of VFA and hydrogen by anaerobic digestion of sludge with high solid content is often limited by factors such as slow hydrolysis efficiency, resulting in low yields of high-value products. At the same time, in northern my country, especially in cold areas in winter, the temperature is low, and the hydrolysis efficiency and microbial activity in the anaerobic digestion process of high-solid sludge are further limited.

[0003] The existing publication number is CN114804565B, which is a low-temperature anaerobic fermentation method for high-solid sludge, comprising the following steps: adding 0.5-2g / KG of potassium persulfate to the high-solid sludge, mixing evenly, and fermenting for a set time; then adding 0.05-3g / gTSS aged mineralized garbage to the high-solid sludge, mixing evenly, and fermenting at 10-15°C for a set time; after the fermentation is completed, the high-solid sludge is separated into solid and liquid to obtain VFA-rich fermentation liquid, hydrogen-rich biogas and solid mud cake.

[0004] In the above technical scheme, it is not possible to fully achieve the mixing of sewage and chemicals, and there is no detailed description on how to mix them. At the same time, how to effectively separate sewage and sludge and effectively centrally treat the sludge is also a difficult problem in this field. For this reason, we propose a high-solid sludge low-temperature anaerobic fermentation method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a low-temperature anaerobic fermentation method for high-solid sludge.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for low-temperature anaerobic fermentation of high-solid sludge comprises the following steps:

[0008] S1. Sewage transportation: transporting sewage into the sewage transportation pipe on the anaerobic fermentation equipment;

[0009] S2. Intermittent addition of sewage chemicals: After the sewage enters, low-temperature anaerobic fermentation chemicals can be intermittently added to the anaerobic fermentation equipment;

[0010] S3. Mixing of sewage and chemicals: The stirring components in the anaerobic fermentation equipment can operate to fully mix the low-temperature anaerobic fermentation chemicals and sewage, and can be left to stand for fermentation operations;

[0011] S4. Directional discharge of sewage: After fermentation is completed, the sewage falls and realizes directional flow, while giving the dirt a directional movement force, which can separate the sewage from the dirt;

[0012] S5. Sedimentation: The dirt is pushed in a directional manner, causing it to accumulate;

[0013] S6. Directed discharge of sediment: It can effectively seal the operation and facilitate the control of sediment discharge.

[0014] Compared with the prior art, the present application can effectively achieve sufficient mixing of impurities and reagents in sewage, and can achieve intermittent quantitative addition of reagents to effectively ensure that the amount of reagent added corresponds to the amount of sewage, and can also effectively stir to fully ensure that the sewage and the reagent can fully react, so as to facilitate the sinking and accumulation of sewage, and can also effectively ferment the sewage for better subsequent extrusion and accumulation.

[0015] Preferably, the anaerobic fermentation equipment comprises a mounting tube, a stirring tank is fixed on the upper end of the mounting tube, a medicine adding mechanism is installed on one side of the upper end of the stirring tank, a turntable is rotatably sleeved on the upper end of the stirring tank, a power mechanism is installed on the upper end of the stirring tank, a feed pipe and a cross bar are arranged on the power mechanism, the cross bar is connected to the medicine adding mechanism, and the feed pipe is arranged on the turntable through the turntable;

[0016] A conical pipe fitting is passed through the bottom of the mixing tank, the lower end of the conical pipe fitting passes through the mounting pipe and is connected to a conveying conical pipe fitting, the conveying conical pipe fitting is fixed in the mounting pipe, a conveying mechanism is provided in the conveying conical pipe fitting, and an electric control valve is installed at one end of the conical pipe fitting located in the conveying conical pipe fitting;

[0017] One end of the conveying conical pipe fitting passes through the mounting tube and extends to one end of the mounting tube, an adjusting mechanism is installed on the upper end of the conveying conical pipe fitting, an inclined rod and a contact plate are provided on the adjusting mechanism, a sealing plate is rotatably connected to the upper end of the inclined rod, the sealing plate is arranged through the conveying conical pipe fitting, a mounting groove is provided on the upper end of the conveying conical pipe fitting, a lead screw is rotatably sleeved in the mounting groove, one end of the lead screw extends to one end of the conveying conical pipe fitting, a baffle member is fixed to one end of the lead screw, the baffle member and the conveying conical pipe fitting are in contact with each other, the contact plate is threadedly sleeved on the lead screw, a second spring member is sleeved on the lead screw, and two ends of the second spring member are respectively fixed on the contact plate and the mounting groove.

[0018] Furthermore, sewage containing dirt can enter the mixing tank through the feed pipe, and intermittent addition of chemicals can be achieved. The stirring element can also be effectively lifted and lowered stably, and can be rotated during lifting and lowering to fully achieve mixing of the chemicals and sewage, so as to better pad the dirt, facilitate centralized discharge and treatment, and improve the treatment quality of sewage sludge.

[0019] Preferably, the drug adding mechanism includes a hopper member that is arranged through one side of the upper end of the stirring tank, the lower end of the hopper member extends into the stirring tank, the top of the stirring tank is rotatably connected to a connecting plate, one end of the connecting plate is fixed with a sealing baffle, the sealing baffle abuts against the lower end of the hopper member, the other end of the connecting plate and the top of the stirring tank are jointly fixed with a tension spring member, the lower end of the connecting plate is fixed with a vertical axis member, and the vertical axis member corresponds to the cross bar member.

[0020] Furthermore, the rotation of the cross bar can intermittently interfere with the vertical axis, and the interference with the vertical axis can drive the connecting plate and the sealing partition to rotate, so that the sealing partition and the hopper are separated, which facilitates the medicine in the hopper to fall into the mixing tank, and when the cross bar and the vertical axis are separated, the sealing partition can be quickly reset by the tension spring to interfere with the lower end of the hopper to prevent the medicine from continuing to fall.

[0021] Preferably, the power mechanism includes a rotating sleeve penetrating through the turntable member, the feed pipe penetrates the rotating sleeve and extends into the mixing tank, an inclined circular plate is rotatably sleeved on the rotating sleeve, the feed pipe is fixed to the upper end of the mixing tank, the inclined circular plate and the feed pipe are fixedly connected, a first motor assembly is fixed on the feed pipe, a synchronous belt assembly is jointly installed on the output shaft of the first motor assembly and the rotating sleeve, the inclined circular plate is located at the lower end of the synchronous belt assembly, a telescopic mechanism is provided on the turntable member, the telescopic mechanism is connected to the inclined circular plate, and the cross bar member is fixedly connected to the lower end of the turntable member.

[0022] Furthermore, the first motor assembly can enable the synchronous belt assembly to drive the rotating sleeve to rotate, and the rotation of the rotating sleeve can drive the turntable member, and the rotation of the turntable member can drive the cross bar member to rotate, so that the agent adding mechanism can be operated, and the telescopic mechanism can also be operated, which is convenient for controlling the rotation and lifting of the stirring member, so that the agent and impurities in the sewage are fully mixed.

[0023] Preferably, the telescopic mechanism includes two telescopic components installed on both sides of the lower end of the turntable member, one of the telescopic components is provided with two transverse axes, one end of the two transverse axes extends to the other telescopic component, a slide rod is slidably sleeved on the turntable member, the lower end of the slide rod is rotatably connected to two rocker members, the other ends of the two transverse axes are respectively rotatably sleeved on the upper ends of the two rocker members, the slide rod is located at the upper end of the turntable member and is sleeved with a resistance spring, the two ends of the resistance spring are respectively fixed on the upper end of the turntable member and the slide rod, a resistance shaft is installed at the upper end of the slide rod, the resistance shaft and the lower end of the inclined circular plate are in conflict, and a stirring member is commonly installed at the lower ends of the two telescopic components.

[0024] Furthermore, as the inclined circular plate rotates, it can drive the slide bar to follow its operation, and at the same time make the resistance shaft resist the lower end of the inclined circular plate, so that the resistance shaft can operate according to the shape of the inclined circular plate, and the slide bar can be stably raised and lowered under the action of the resistance spring, and the rocker arm can be controlled to drive the horizontal axis to operate, so that the telescopic assembly can be extended and retracted, and the position of the stirring element can be controlled. At the same time, the telescopic assembly follows the inclined circular plate to make the stirring element rotate, so as to fully realize the rapid mixing of sludge impurities and chemicals in sewage.

[0025] Preferably, the conveying mechanism includes a second motor assembly fixed at one end of the mounting tube, the second motor assembly is located on the side away from the baffle member, the output shaft of the second motor assembly extends into the conveying conical pipe fitting, a screw member is rotatably sleeved in the conveying conical pipe fitting, the screw member and the end of the output shaft of the second motor assembly are fixedly connected, and the screw member is located at the lower end of the conical pipe fitting.

[0026] Furthermore, the auger member can be rotated by the action of the second motor assembly, and the rotation of the auger member can cause the falling sewage and sludge to move in a directional manner.

[0027] Preferably, a screen member is installed at the lower end of the conveying conical pipe fitting, and the screen member is located on the side of the sealing plate away from the baffle member. An outlet is opened on one side of the lower end of the mounting tube, and the outlet is located at the lower end of the screen member. A sealing gasket is fixed on the side close to the baffle member and the conveying conical pipe fitting.

[0028] Furthermore, the separation of sewage and sludge can be achieved through the action of the screen element, the sewage can be made to fall, and the sludge can be retained in the conveying conical pipe, which is convenient for subsequent directional conveying and centralized removal, and can effectively ensure the sealing performance.

[0029] Preferably, the adjustment mechanism includes a screw member threadedly sleeved on the supporting frame and the mounting tube, the screw member is located at one end of the mounting tube and a stretching reset mechanism is installed, the stretching reset mechanism is provided with a connecting frame, the lower end of the inclined rod is rotatably connected to the connecting frame, and the stretching reset mechanism corresponds to the contact plate.

[0030] Furthermore, the stretching and resetting mechanism can be operated through the action of the screw rod, and the connecting frame can drive the sealing plate to move up and down through the inclined rod. Through the lifting and lowering of the sealing plate, the inside of the conveying conical pipe can be divided, and the sludge can be effectively output at a later stage.

[0031] Preferably, the stretching and resetting mechanism includes two support plates arranged between the connecting frame and the screw member, one of the support plates is fixedly connected to the connecting frame, the other support plate is rotatably sleeved on one end of the screw member, and two fixing rods are slidably sleeved on the other support plate rotatably sleeved on the screw member, one end of the two fixing rods is fixed to one of the support plates, a first spring member is sleeved on the fixing rod, and the two ends of the first spring member are respectively fixed to the other support plate and the fixing rod.

[0032] Furthermore, the action of the first spring member can cause the two support plates to conflict with each other, and when one of the support plates connected to the connecting frame cannot move, the other support plate can move to control the operation of other components, so that the baffle member can be rotated to facilitate the leakage of one end of the conveying conical pipe fitting, thereby facilitating the removal of sludge from the conveying conical pipe fitting.

[0033] Preferably, a refrigeration device and an inert gas supply device are installed on one side of the mounting pipe, the stirring tank and the mounting pipe are both equipped with cooling components, the refrigeration device is connected to the two cooling components, an air supply pipe is provided on one side of the stirring tank and the mounting pipe, and air delivery pipes are installed at the upper and lower ends of the air supply pipe, the lower end of the air supply pipe is connected to the inert gas supply device, one end of the air delivery pipe at the upper end extends into the stirring tank, and the air delivery pipe at the lower end extends into the mounting pipe.

[0034] Furthermore, during actual production and preparation, the staff can make use of the inert gas supply equipment and the refrigeration equipment to enable the refrigeration equipment to operate the cooling component, which can quickly reduce the temperature inside the mixing tank and the installation pipe, thereby helping to achieve low-temperature fermentation operations. At the same time, the inert gas supply equipment can be used to transport inert gas into the mixing tank and the installation pipe, and the operation of the cooling equipment can achieve anaerobic low-temperature fermentation operations.

[0035] The beneficial effects of the present invention are:

[0036] 1. The present application can effectively achieve full mixing of impurities and agents in sewage, and can achieve intermittent quantitative addition of agents to effectively ensure that the amount of agent added corresponds to the amount of sewage, and can also effectively stir to fully ensure that the sewage and the agent can fully react, so as to facilitate the sinking and accumulation of sewage, and can also effectively ferment the sewage for better subsequent extrusion and accumulation;

[0037] 2. It can make the sewage containing dirt enter the mixing tank through the feed pipe, and can realize the intermittent addition of the reagent, and can effectively make the stirring piece rise and fall stably, and can rotate during the rise and fall to fully realize the mixing of the reagent and sewage, so as to make the dirt better cushion, facilitate centralized discharge and treatment, and improve the treatment quality of sewage sludge;

[0038] 3. The rotation of the cross bar can intermittently collide with the vertical shaft, and the vertical shaft can drive the connecting plate and the sealing partition to rotate, so that the sealing partition and the hopper are separated, so that the medicine in the hopper falls into the mixing tank. When the cross bar and the vertical shaft are separated, the sealing partition can be quickly reset by the tension spring to collide with the lower end of the hopper to prevent the medicine from continuing to fall.

[0039] 4. The synchronous belt assembly can drive the rotating sleeve to rotate through the first motor assembly, and the rotating sleeve can drive the turntable member to rotate through the rotation of the turntable member, and the crossbar member can be driven to rotate through the rotation of the turntable member to operate the agent adding mechanism, and the telescopic mechanism can also be operated, so as to facilitate the control of the rotation and lifting of the stirring member, so that the agent and impurities in the sewage are fully mixed;

[0040] 5. As the inclined circular plate rotates, it can drive the slide bar to follow its operation, and at the same time make the abutment shaft abut the lower end of the inclined circular plate, so that the abutment shaft can operate according to the shape of the inclined circular plate, and the slide bar can be stably lifted and lowered under the action of the resistance spring, and the swing rod can be controlled to drive the horizontal axis to operate, so that the telescopic assembly can be extended and retracted, and the position of the stirring member can be controlled. At the same time, the telescopic assembly follows the inclined circular plate to make the stirring member rotate, so as to fully realize the rapid mixing of sludge impurities and chemicals in sewage;

[0041] 6. The second motor assembly can rotate the auger, and the falling sewage and sludge can be moved in a directional manner through the rotation of the auger;

[0042] 7. The sieve element can separate sewage and sludge, make sewage fall, and keep sludge in the conveying conical pipe fitting, which is convenient for subsequent directional conveying and centralized removal; the stretching and resetting mechanism can be operated by the screw element, so that the connecting frame can drive the sealing plate to rise and fall through the inclined rod element. The lifting and lowering of the sealing plate can realize the division of the inside of the conveying conical pipe fitting, and the sludge can be effectively output later; the first spring element can make the two support plates conflict with each other, and when one of the support plates connected to the connecting frame cannot move, the other support plate can move to control the operation of other components, so that the baffle element can be rotated to facilitate the leakage of one end of the conveying conical pipe fitting, and to facilitate the removal of sludge from the conveying conical pipe fitting;

[0043] 8. At the same time, through the operation of the refrigeration equipment and the inert gas supply equipment, the refrigeration equipment can achieve low temperature in the mixing tank and the installation pipe through the cooling component, and the inert gas supply equipment can reduce the oxygen content in the mixing tank and the installation pipe, so as to better carry out anaerobic fermentation in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A cross-sectional view of an anaerobic fermentation device for a low-temperature anaerobic fermentation method of high-solid sludge proposed by the present invention;

[0045] Figure 2 It is a structural diagram of the telescopic component in the anaerobic fermentation equipment of the present invention;

[0046] Figure 3 It is a structural diagram of a hopper member and a sealing baffle in the anaerobic fermentation equipment of the present invention;

[0047] Figure 4 The present invention is attached Figure 1 A magnified view of point B;

[0048] Figure 5 A diagram of a rotating sleeve and an inclined circular plate in the anaerobic fermentation equipment of the present invention;

[0049] Figure 6 The present invention is attached Figure 1 A magnified image of point A;

[0050] Figure 7 This is a diagram of an anaerobic fermentation equipment for a low-temperature anaerobic fermentation method of high-solid sludge proposed by the present invention;

[0051] Figure 8 This is a flowchart of the steps of a low-temperature anaerobic fermentation method for high-solid sludge proposed by the present invention;

[0052] In the figure: 1 feed pipe, 2 rotating sleeve, 3 tension spring member, 4 first motor assembly, 5 synchronous belt assembly, 6 swing rod member, 7 telescopic assembly, 8 mixing tank, 9 mixing member, 10 tapered pipe member, 11 auger member, 12 second motor assembly, 13 outlet, 14 mounting pipe, 15 conveying tapered pipe member, 16 sealing plate, 17 inclined rod member, 18 baffle member, 19 screen member, 20 horizontal axis, 21 connecting plate, 22 vertical axis member, 23 hopper member, 24 sealing partition, 25 fixing rod, 26 first spring member, 27 connecting frame, 28 support plate, 29 mounting groove, 30 contact plate, 31 second spring member, 32 bearing frame, 33 screw member, 34 inclined circular plate, 35 turntable member, 36 contact shaft, 37 resistance spring, 38 slide rod, 39 lead screw, 40 gas pipe, 41 gas supply pipe, 42 inert gas supply equipment, 43 cooling assembly, 44 refrigeration equipment. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0054] Reference Figure 8 , a method for low-temperature anaerobic fermentation of high-solid sludge, comprising the following steps:

[0055] S1. Sewage transportation: transporting sewage into the sewage transportation pipe on the anaerobic fermentation equipment;

[0056] S2. Intermittent addition of sewage chemicals: After the sewage enters, low-temperature anaerobic fermentation chemicals can be intermittently added to the anaerobic fermentation equipment;

[0057] S3. Mixing of sewage and chemicals: The stirring components in the anaerobic fermentation equipment can operate to fully mix the low-temperature anaerobic fermentation chemicals and sewage, and can be left to stand for fermentation operations;

[0058] S4. Directional discharge of sewage: After fermentation is completed, the sewage falls and realizes directional flow, while giving the dirt a directional movement force, which can separate the sewage from the dirt;

[0059] S5. Sedimentation: The dirt is pushed in a directional manner, causing it to accumulate;

[0060] S6. Directed discharge of sediment: It can effectively seal the operation and facilitate the control of sediment discharge.

[0061] Reference Figure 1-7 The anaerobic fermentation equipment includes a mounting tube 14, a stirring tank 8 is fixed on the upper end of the mounting tube 14, a reagent adding mechanism is installed on one side of the upper end of the stirring tank 8, a turntable 35 is rotatably sleeved on the upper end of the stirring tank 8, a power mechanism is installed on the upper end of the stirring tank 8, a feed pipe 1 and a cross bar are provided on the power mechanism, the cross bar is connected to the reagent adding mechanism, the feed pipe 1 is arranged on the turntable 35, the cross bar can be operated by the power mechanism, so as to control the operation of the reagent adding mechanism, and the reagent is added in cooperation with the feed pipe 1 when sewage is added.

[0062] Reference Figure 1-6 A conical pipe fitting 10 is passed through the bottom of the stirring tank 8, and the lower end of the conical pipe fitting 10 passes through the mounting pipe 14 and is connected to a conveying conical pipe fitting 15. The conveying conical pipe fitting 15 is fixed in the mounting pipe 14, and a conveying mechanism is provided in the conveying conical pipe fitting 15. An electric-controlled valve is installed at one end of the conical pipe fitting 10 located in the conveying conical pipe fitting 15. The electric-controlled valve can effectively make the sewage in the stirring tank 8, which is helpful for low-temperature fermentation operation after the sewage and the reagent are mixed.

[0063] Reference Figure 1-6One end of the conveying conical pipe fitting 15 passes through the mounting tube 14 and extends to one end of the mounting tube 14. An adjusting mechanism is installed on the upper end of the conveying conical pipe fitting 15. The adjusting mechanism is provided with an inclined rod 17 and an abutment plate 30. The upper end of the inclined rod 17 is rotatably connected with a sealing plate 16. The sealing plate 16 is arranged on the conveying conical pipe fitting 15. A mounting groove 29 is provided on the upper end of the conveying conical pipe fitting 15. A lead screw 39 is rotatably sleeved in the mounting groove 29. One end of the lead screw 39 extends to one end of the conveying conical pipe fitting 15. A baffle 18 is fixed to one end of the lead screw 39. The baffle 18 and the conveying conical pipe fitting 15 abut against each other. A sealing gasket is fixed on one side of the baffle member 18 and the conveying conical pipe member 15, the contact plate 30 is threadedly sleeved on the lead screw 39, and a second spring member 31 is sleeved on the lead screw 39. The two ends of the second spring member 31 are respectively fixed on the contact plate 30 and the mounting groove 29, so that the sewage containing dirt can enter the mixing tank 8 through the feed pipe 1, and the intermittent addition of the agent can be realized, and the stirring member 9 can be effectively lifted and lowered stably, and can be rotated during the lifting and lowering to fully realize the mixing of the agent and the sewage, so as to make the dirt better cushioned, convenient for centralized discharge treatment, and improve the treatment quality of sewage sludge.

[0064] Reference Figure 1 , 3 The drug adding mechanism includes a hopper member 23 which is arranged on one side of the upper end of the stirring tank 8. The lower end of the hopper member 23 extends into the stirring tank 8. The top of the stirring tank 8 is rotatably connected with a connecting plate 21. A sealing partition 24 is fixed to one end of the connecting plate 21. The sealing partition 24 abuts against the lower end of the hopper member 23. The other end of the connecting plate 21 and the top of the stirring tank 8 are jointly fixed with a tension spring member 3. The lower end of the connecting plate 21 is fixed with a vertical shaft member 22. The vertical shaft member 22 and The cross bar corresponds to the vertical shaft 22 through its rotation, and the connecting plate 21 and the sealing baffle 24 can be driven to rotate by the vertical shaft 22, so that the sealing baffle 24 and the hopper 23 are separated, so that the medicine in the hopper 23 can fall into the mixing tank 8, and when the cross bar and the vertical shaft 22 are separated, the sealing baffle 24 can be quickly reset by the tension spring 3 to contact the lower end of the hopper 23 to prevent the medicine from continuing to fall.

[0065] Reference Figure 1 , 56. The power mechanism includes a rotating sleeve 2 that penetrates and is arranged on a turntable member 35. A feed pipe 1 penetrates and extends into the mixing tank 8. An inclined circular plate 34 is rotatably sleeved on the rotating sleeve 2. The feed pipe 1 is fixed to the upper end of the mixing tank 8. The inclined circular plate 34 and the feed pipe 1 are fixedly connected. A first motor assembly 4 is fixed on the feed pipe 1. A synchronous belt assembly 5 is installed on the output shaft of the first motor assembly 4 and the rotating sleeve 2. The inclined circular plate 34 is located at the lower end of the synchronous belt assembly 5. A telescopic mechanism is provided on the turntable member 35. The telescopic mechanism is connected to the inclined circular plate 34. The cross bar member is fixedly connected to the lower end of the turntable member 35. The first motor assembly 4 can drive the synchronous belt assembly 5 to rotate the rotating sleeve 2. The rotation of the rotating sleeve 2 can drive the turntable member 35. The rotation of the turntable member 35 can drive the cross bar member to rotate, so that the agent adding mechanism can be operated, and the telescopic mechanism can also be operated, so as to facilitate the control of the rotation and lifting of the stirring member 9, so that the impurities in the agent and the sewage are fully mixed.

[0066] Reference Figure 1 , 2 6, the telescopic mechanism includes two telescopic components 7 installed on both sides of the lower end of the turntable member 35, one of the telescopic components 7 is provided with two transverse shafts 20, one end of the two transverse shafts 20 extends to the other telescopic component 7, the turntable member 35 is slidably sleeved with a slide bar 38, the lower end of the slide bar 38 is rotatably connected to two rocker members 6, the other ends of the two transverse shafts 20 are respectively rotatably sleeved on the upper ends of the two rocker members 6, the slide bar 38 is located at the upper end of the turntable member 35 and is sleeved with a resistance spring 37, the two ends of the resistance spring 37 are respectively fixed on the upper end of the turntable member 35 and the slide bar 38, the upper end of the slide bar 38 is installed with a resistance shaft 36, the resistance shaft 36 The shaft 36 and the lower end of the inclined circular plate 34 are in conflict with each other, and a stirring member 9 is installed at the lower ends of the two telescopic components 7. As the inclined circular plate 34 rotates, it can drive the slide bar 38 to follow its operation, and at the same time make the conflict shaft 36 conflict with the lower end of the inclined circular plate 34, so that the conflict shaft 36 can operate according to the shape of the inclined circular plate 34, and the slide bar 38 can be stably raised and lowered under the action of the resistance spring 37, and the rocker member 6 can be controlled to drive the horizontal axis 20 to operate, so that the telescopic component 7 can be extended and retracted, and the position of the stirring member 9 can be controlled. At the same time, the telescopic component 7 follows the inclined circular plate 34 to make the stirring member 9 rotate, so as to fully realize the rapid mixing of sludge impurities and chemicals in sewage.

[0067] Reference Figure 1The conveying mechanism includes a second motor assembly 12 fixed at one end of the mounting tube 14. The second motor assembly 12 is located on a side away from the baffle member 18. The output shaft of the second motor assembly 12 extends into the conveying conical pipe 15. A screw member 11 is rotatably sleeved in the conveying conical pipe 15. The screw member 11 is fixedly connected to the end of the output shaft of the second motor assembly 12. The screw member 11 is located at the lower end of the conical pipe 10. The second motor assembly 12 can rotate the screw member 11, and the rotation direction of the second motor assembly 12 can be controlled at the same time. The rotation of the screw member 11 can make the falling sewage and sludge move in a directional manner.

[0068] Reference Figure 1 A screen member 19 is installed at the lower end of the conveying cone pipe 15. The screen member 19 is located on the side of the sealing plate 16 away from the baffle member 18. An outlet 13 is opened on one side of the lower end of the mounting tube 14. The outlet 13 is located at the lower end of the screen member 19. The screen member 19 can separate sewage and sludge, allowing the sewage to fall and the sludge to remain in the conveying cone pipe 15, which is convenient for subsequent directional transportation and centralized removal.

[0069] Reference Figure 1 , 4 The adjusting mechanism includes a screw member 33 threadedly sleeved on the supporting frame 32 and the mounting tube 14. The screw member 33 is located at one end of the mounting tube 14 and is installed with a stretching and resetting mechanism. The stretching and resetting mechanism is provided with a connecting frame 27. The lower end of the inclined rod 17 is rotatably connected to the connecting frame 27. The stretching and resetting mechanism corresponds to the contact plate 30. Through the forward and reverse rotation of the screw member 33, the position of the support plate 28 and the connecting frame 27 can be effectively controlled to achieve the purpose of controlling the operation of the corresponding components, and the positional relationship between the sealing plate 16 and the conveying conical pipe 15 can be controlled.

[0070] Reference Figure 1 , 4The stretching and resetting mechanism includes two support plates 28 arranged between the connecting frame 27 and the screw member 33, one of which is fixedly connected to the connecting frame 27, and the other support plate 28 is rotatably sleeved on one end of the screw member 33. Two fixing rods 25 are slidably sleeved on the other support plate 28 rotatably sleeved with the screw member 33, one end of the two fixing rods 25 are fixed on one of the support plates 28, and a first spring member 26 is sleeved on the fixing rod 25, and the two ends of the first spring member 26 are respectively fixed on the other support plate 28 and the fixing rod 25. The two support plates 28 can be made to conflict with each other through the action of the first spring member 26, and when one of the support plates 28 connected to the connecting frame 27 cannot move, the other support plate 28 can move to control the operation of other components, and the other support plate 28 can push the conflicting plate 30 to move, so that the lead screw 39 can drive the baffle member 18 to rotate, so as to facilitate the leakage of one end of the conveying conical pipe fitting 15 and to facilitate the removal of sludge from the conveying conical pipe fitting 15.

[0071] Reference Figure 8 A refrigeration device 44 and an inert gas supply device 42 are installed on one side of the mounting pipe 14, and the stirring tank 8 and the mounting pipe 14 are both equipped with a cooling assembly 43. The refrigeration device 44 is connected to the two cooling assemblies 43. A gas supply pipe 41 is provided on one side of the stirring tank 8 and the mounting pipe 14. Gas delivery pipes 40 are installed at both upper and lower ends of the gas supply pipe 41. The lower end of the gas supply pipe 41 is connected to the inert gas supply device 42. One end of the gas delivery pipe 40 at the upper end extends into the stirring tank 8, and the gas delivery pipe 40 at the lower end extends to The installation tube 14 is installed in the installation tube 14; during actual production and preparation, the staff can use the inert gas supply equipment 42 and the refrigeration equipment 44 to enable the refrigeration equipment 44 to enable the cooling component 43 to operate, which can quickly reduce the temperature in the stirring tank 8 and the installation tube 14, which is helpful to realize the low-temperature fermentation operation. At the same time, the inert gas supply equipment 42 can transport the inert gas into 41 and transport it into the stirring tank 8 and the installation tube 14 through 40. The operation of the cooling equipment 44 can realize anaerobic low-temperature fermentation operation.

[0072] In the present invention, sewage is transported into the sewage transport pipe on the anaerobic fermentation equipment; after the sewage enters, low-temperature anaerobic fermentation agents can be intermittently added into the anaerobic fermentation equipment;

[0073] The stirring components in the anaerobic fermentation equipment can operate to fully mix the low-temperature anaerobic fermentation agent and the sewage, and can be left to ferment. After the fermentation is completed, the sewage falls and realizes directional flow, and at the same time, it can give the sewage a directional movement force, so that the sewage and the sewage can be separated.

[0074] The dirt is pushed in a direction that causes it to accumulate; it can effectively seal the operation and facilitate the controlled discharge of sediment.

[0075] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for low-temperature anaerobic fermentation of high-solid sludge, characterized in that: The following steps are involved: S1. Sewage transportation: transporting sewage into the sewage transportation pipe on the anaerobic fermentation equipment; S2. Intermittent addition of sewage chemicals: After the sewage enters, low-temperature anaerobic fermentation chemicals can be intermittently added to the anaerobic fermentation equipment; S3. Mixing of sewage and chemicals: The stirring components in the anaerobic fermentation equipment can operate to fully mix the low-temperature anaerobic fermentation chemicals and sewage, and can be left to stand for fermentation operations; S4. Directional discharge of sewage: After fermentation is completed, the sewage falls and realizes directional flow, while giving the dirt a directional movement force, which can separate the sewage from the dirt; S5. Sedimentation: The dirt is pushed in a directional manner, causing it to accumulate; S6. Directed discharge of sediment: It can effectively seal the operation and facilitate the control of sediment discharge.

2. The method for low-temperature anaerobic fermentation of high-solid sludge according to claim 1, characterized in that: The anaerobic fermentation equipment comprises a mounting pipe (14), a stirring tank (8) is fixed to the upper end of the mounting pipe (14), a medicine adding mechanism is installed on one side of the upper end of the stirring tank (8), a turntable member (35) is rotatably sleeved on the upper end of the stirring tank (8), a power mechanism is installed on the upper end of the stirring tank (8), a feed pipe (1) and a cross bar are provided on the power mechanism, the cross bar is connected to the medicine adding mechanism, and the feed pipe (1) is arranged through the turntable member (35); A conical pipe (10) is provided through the bottom of the mixing tank (8); the lower end of the conical pipe (10) passes through the mounting pipe (14) and is connected to a conveying conical pipe (15); the conveying conical pipe (15) is fixed in the mounting pipe (14); a conveying mechanism is provided in the conveying conical pipe (15); an electric control valve is installed at one end of the conical pipe (10) located in the conveying conical pipe (15); One end of the conveying conical pipe (15) passes through the mounting tube (14) and extends to one end of the mounting tube (14). An adjusting mechanism is installed at the upper end of the conveying conical pipe (15). The adjusting mechanism is provided with an inclined rod (17) and a contact plate (30). The upper end of the inclined rod (17) is rotatably connected to a sealing plate (16). The sealing plate (16) is arranged on the conveying conical pipe (15). The upper end of the conveying conical pipe (15) is provided with a mounting groove (29). The mounting groove (30) is provided on the upper end of the conveying conical pipe (15). A lead screw (39) is rotatably sleeved in the lead screw (29), one end of the lead screw (39) extends to one end of the conveying conical pipe (15), a baffle member (18) is fixed to one end of the lead screw (39), the baffle member (18) and the conveying conical pipe (15) are in conflict with each other, the conflicting plate (30) is threadedly sleeved on the lead screw (39), a second spring member (31) is sleeved on the lead screw (39), and two ends of the second spring member (31) are respectively fixed on the conflicting plate (30) and the mounting groove (29).

3. A method for low-temperature anaerobic fermentation of high-solid sludge according to claim 2, characterized in that: The drug adding mechanism comprises a hopper member (23) penetratingly arranged on one side of the upper end of the stirring tank (8), the lower end of the hopper member (23) extending into the stirring tank (8), the top of the stirring tank (8) being rotatably connected with a connecting plate (21), one end of the connecting plate (21) being fixed with a sealing baffle (24), the sealing baffle (24) being in contact with the lower end of the hopper member (23), the other end of the connecting plate (21) and the top of the stirring tank (8) being fixed with a tension spring member (3), the lower end of the connecting plate (21) being fixed with a vertical shaft member (22), the vertical shaft member (22) corresponding to the cross bar member.

4. The method for low-temperature anaerobic fermentation of high-solid sludge according to claim 2, characterized in that: The power mechanism comprises a rotating sleeve (2) penetrating the rotating sleeve (2) and extending into the mixing tank (8); the feeding pipe (1) penetrates the rotating sleeve (2) and extends into the mixing tank (8); an inclined circular plate (34) is rotatably sleeved on the rotating sleeve (2); the feeding pipe (1) is fixed to the upper end of the mixing tank (8); the inclined circular plate (34) and the feeding pipe (1) are fixedly connected; a first motor assembly (4) is fixed to the feeding pipe (1); a synchronous belt assembly (5) is installed on the output shaft of the first motor assembly (4) and the rotating sleeve (2); the inclined circular plate (34) is located at the lower end of the synchronous belt assembly (5); a telescopic mechanism is provided on the rotating sleeve (35); the telescopic mechanism is connected to the inclined circular plate (34); and the cross bar is fixedly connected to the lower end of the rotating sleeve (35).

5. The method for low-temperature anaerobic fermentation of high-solid sludge according to claim 4, characterized in that: The telescopic mechanism comprises two telescopic components (7) mounted on both sides of the lower end of the turntable member (35), one of the telescopic components (7) is provided with two transverse shafts (20), one end of the two transverse shafts (20) extends to the other telescopic component (7), a slide rod (38) is slidably sleeved on the turntable member (35), the lower end of the slide rod (38) is rotatably connected to two rocker members (6), the other ends of the two transverse shafts (20) are respectively rotatably sleeved on the upper ends of the two rocker members (6), the slide rod (38) is located at the upper end of the turntable member (35) and is sleeved with a resistance spring (37), the two ends of the resistance spring (37) are respectively fixed to the upper end of the turntable member (35) and the slide rod (38), the upper end of the slide rod (38) is provided with a resistance shaft (36), the resistance shaft (36) and the lower end of the inclined circular plate (34) are in conflict with each other, and the lower ends of the two telescopic components (7) are commonly provided with a stirring member (9).

6. The method for low-temperature anaerobic fermentation of high-solid sludge according to claim 2, characterized in that: The conveying mechanism comprises a second motor assembly (12) fixed at one end of a mounting tube (14); the second motor assembly (12) is located on a side away from the baffle member (18); an output shaft of the second motor assembly (12) extends into a conveying conical pipe (15); an auger member (11) is rotatably sleeved in the conveying conical pipe (15); the auger member (11) is fixedly connected to the end of the output shaft of the second motor assembly (12); and the auger member (11) is located at the lower end of the conical pipe (10).

7. The method for low-temperature anaerobic fermentation of high-solid sludge according to claim 2, characterized in that: A screen member (19) is installed at the lower end of the conveying conical pipe member (15), and the screen member (19) is located on a side of the sealing plate (16) away from the baffle member (18). An outlet (13) is opened on one side of the lower end of the installation pipe (14), and the outlet (13) is located at the lower end of the screen member (19). A sealing gasket is fixed on a side close to the baffle member (18) and the conveying conical pipe member (15).

8. The method for low-temperature anaerobic fermentation of high-solid sludge according to claim 2, characterized in that: The adjustment mechanism comprises a screw member (33) threadedly sleeved on a carrier frame (32) and a mounting tube (14); a stretching and resetting mechanism is installed at one end of the screw member (33) located on the mounting tube (14); a connecting frame (27) is provided on the stretching and resetting mechanism; the lower end of the inclined rod member (17) is rotatably connected to the connecting frame (27); and the stretching and resetting mechanism corresponds to the abutment plate (30).

9. A method for low-temperature anaerobic fermentation of high-solid sludge according to claim 8, characterized in that: The stretching and resetting mechanism comprises two support plates (28) arranged between a connecting frame (27) and a screw member (33), wherein one support plate (28) is fixedly connected to the connecting frame (27), and the other support plate (28) is rotatably sleeved on one end of the screw member (33); two fixing rods (25) are slidably sleeved on the other support plate (28) rotatably sleeved on the screw member (33), one end of each of the two fixing rods (25) is fixed on one of the support plates (28), and a first spring member (26) is sleeved on the fixing rod (25), and two ends of the first spring member (26) are respectively fixed on the other support plate (28) and the fixing rod (25).

10. The method for low-temperature anaerobic fermentation of high-solid sludge according to claim 2, characterized in that: A refrigeration device (44) and an inert gas supply device (42) are installed on one side of the installation pipe (14); the stirring tank (8) and the installation pipe (14) are both provided with cooling components (43); the refrigeration device (44) is connected to the two cooling components (43); an air supply pipe (41) is provided on one side of the stirring tank (8) and the installation pipe (14); air delivery pipes (40) are installed at both upper and lower ends of the air supply pipe (41); the lower end of the air supply pipe (41) is connected to the inert gas supply device (42); one end of the air delivery pipe (40) at the upper end extends into the stirring tank (8); and the air delivery pipe (40) at the lower end extends into the installation pipe (14).

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