Coupling type sludge reduction device and use method thereof

Abstract

The invention discloses a coupled sludge reduction device and a use method thereof, and relates to the technical field of sludge treatment.The coupled sludge reduction device comprises a first treatment pond, a second treatment pond, ozone supply equipment and oxygen supply equipment, and the first treatment pond and the second treatment pond are the same in structure. According to the device, overflow liquid with the pH value larger than 6.5 is stored through the adjusting mechanism of the first treatment pond, when sludge enters the second treatment pond through the sludge conveying mechanism, the sludge can be introduced into the fifth connecting pipe through the water pump, the pH of the sludge is increased to the proper range, and the pH sensors in the first treatment pond, the second treatment pond and the guide pipe are combined for real-time monitoring; an alkaline regulator can be supplemented in time through the liquid adding pipe, it is ensured that the ozone oxidation reaction in the first treatment pond and the reaction in the second treatment pond under the oxygen environment are both carried out within the appropriate pH range, the problem that the activity of aerobic microorganisms is inhibited due to the too high acidity is effectively solved, and the stability of the sludge reduction effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and in particular to a coupled sludge reduction device and a method for using the same. Background Art

[0002] A large amount of sludge is produced in the process of sewage treatment. The composition of the sludge is complex, and it contains harmful substances such as pathogens and heavy metals. If it is not treated, it is easy to pollute the soil, water and air. In addition, the original sludge has a high moisture content and a large volume. The cost of transportation, landfill and incineration is particularly high. Therefore, it is very necessary to reduce the sludge generated in the sewage treatment process.

[0003] For example, publication number CN102398988B discloses a high-efficiency biochemical treatment device for sludge reduction, which includes an oxygen tank and an air inlet pipe, one end of a variable frequency high-pressure pump or a diaphragm pump is connected to one end of a low-pressure dissolved oxygen inlet pipe, and the other end is connected to a high-pressure dissolved oxygen outlet pipe extending into the interior of a pressure tank, a flat nozzle is installed on the end of the high-pressure dissolved oxygen outlet pipe in the pressure tank, the bottom of the pressure tank is connected to an ejector through an ultrafine bubble dissolved oxygen outlet pipe, the ejector is connected to a biological fluidized bed through a water distribution pipe, a filtering, blocking or sweeping device is installed on the upper part of the biological fluidized bed, a toothed water outlet weir is provided on the upper part of the filtering, blocking or sweeping device, and the toothed water outlet weir is connected to a sedimentation tank through an outlet pipe.

[0004] However, in the prior art, when sludge is reduced in volume using a coupled process of ozone oxidation and aerobic digestion, the strong oxidizing property of ozone will react with organic matter and reducing substances in the sludge to generate acidic substances. These acidic substances react with the original alkalinity components in the sludge to neutralize the sludge alkalinity. When the original sludge alkalinity is insufficient, the alkalinity is quickly consumed and cannot neutralize H + , which directly leads to a sharp drop in the pH of the sludge after oxidation. Aerobic microorganisms are sensitive to the environment. Large fluctuations in pH will inhibit the activity of aerobic microorganisms and cause large fluctuations in the sludge degradation efficiency, making the reduction effect of the coupling process unstable and difficult to achieve expectations. Summary of the Invention

[0005] The object of the present invention is to provide a coupled sludge reduction device and a method of using the same to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coupled sludge reduction device, comprising a No. 1 treatment tank, a No. 2 treatment tank, an ozone gas supply device and an oxygen gas supply device, the No. 1 treatment tank and the No. 2 treatment tank have the same structure, and an overflow weir structure is provided on the upper part of the No. 1 treatment tank and the No. 2 treatment tank, a mixing mechanism and an air outlet component are installed inside the two treatment tanks, the No. 1 treatment tank and the No. 2 treatment tank are interconnected through a sludge transmission mechanism, the air outlet component inside the No. 1 treatment tank is fixedly connected to the ozone gas supply device, and the air outlet component inside the No. 2 treatment tank is fixedly connected to the oxygen gas supply device, a feeding mechanism is installed on the side of the No. 1 treatment tank and the No. 2 treatment tank respectively, an adjusting mechanism is installed on the side of the No. 1 treatment tank, the adjusting mechanism is used to store overflow liquid with a pH value greater than 6.5, and the adjusting mechanism is used to output overflow liquid to the inside of the feeding mechanism on the side of the No. 2 treatment tank, a liquid adding pipe is fixedly connected to the upper part of the feeding mechanism, and a feeding pipe is fixedly connected to the surface of the feeding mechanism on the side of the No. 1 treatment tank, and the liquid adding pipe is externally connected to the drug supply device;

[0007] The feeding mechanism includes a box body, a mixing impeller is rotatably connected inside the box body, a conduit is fixedly connected to the side of the box body, and a cover is fixedly connected to the end of the conduit. pH sensors are installed in the No. 1 treatment tank, the No. 2 treatment tank and the conduit;

[0008] The mixing mechanism includes a bottom stirring component and a middle stirring component. The middle stirring component is lifted and lowered for stirring inside the No. 1 treatment tank and the No. 2 treatment tank.

[0009] Preferably, the bottom stirring assembly includes a fixed frame, a motor is fixedly connected to the upper part of the fixed frame, a connecting shaft is fixedly connected to the output end of the motor, and a stirring assembly No. 1 is fixedly connected to the bottom of the connecting shaft, and the stirring assembly No. 1 is used to stir and scrape the sludge.

[0010] Preferably, the middle stirring assembly includes a fixed plate and a guide rail, the fixed plate is fixedly connected to the connecting shaft, and the bottom of the fixed plate is fixedly connected to a telescopic assembly, the bottom of the telescopic assembly is fixedly connected to a connecting plate, the connecting plate is slidably connected to the connecting shaft, and the side of the connecting plate is fixedly connected to the No. 2 stirring assembly, a wedge-shaped guide block is slidably connected inside the guide rail, and a wedge-shaped limiting groove is provided inside the guide rail, the wedge-shaped guide block is located inside the wedge-shaped limiting groove and fits with the guide rail, and the wedge-shaped guide block is fixedly connected to the end of the No. 2 stirring assembly.

[0011] Preferably, the telescopic assembly includes a telescopic rod and a spring, one end of the telescopic rod is fixedly connected to the fixed plate, and the other end of the telescopic rod is fixedly connected to the connecting plate, one end of the spring is fixedly connected to the fixed plate, and the other end of the spring is fixedly connected to the connecting plate.

[0012] Preferably, the regulating mechanism includes a storage tank, a No. 1 connecting pipe is installed on the upper part of the storage tank, one end of the No. 1 connecting pipe is fixedly connected to the overflow weir structure of the No. 1 treatment tank, and a No. 2 connecting pipe is fixedly connected to the bottom of the No. 1 connecting pipe, a valve is installed on the surface of the No. 2 connecting pipe, and a water pump is installed on the upper part of the storage tank, one end of the water pump is fixedly connected to the No. 3 connecting pipe, and the end of the No. 3 connecting pipe is fixedly connected to the sludge transfer mechanism.

[0013] Preferably, the sludge transfer mechanism includes a sludge pump, and the ends of the sludge pump are respectively installed with connecting pipe No. 4 and connecting pipe No. 5, connecting pipe No. 4 is fixedly connected to the bottom of treatment tank No. 1, connecting pipe No. 5 is fixedly connected to the box on the side of treatment tank No. 2, and the end of connecting pipe No. 3 is fixedly connected to connecting pipe No. 5.

[0014] A method for using a coupled sludge reduction device comprises the following steps:

[0015] S1. Sludge is introduced into the No. 1 treatment tank through the feed pipe and the feed mechanism on the side of the No. 1 treatment tank, and the required treatment agent is added into the tank through the liquid addition pipe. At the same time, ozone is introduced into the No. 1 treatment tank through the ozone gas supply equipment and gas outlet assembly;

[0016] S2, the bottom stirring assembly and the middle stirring assembly are driven by the motor to stir the sludge at the same time;

[0017] S3, using a pH sensor to monitor the pH of the sludge reaction inside the No. 1 treatment tank;

[0018] S4. When the pH value of the sludge in the No. 1 treatment tank is lower than 6.0, an alkaline regulator is added to the tank through the liquid adding pipe to quickly adjust the pH value. When the pH value of the sludge in the No. 1 treatment tank is between 6.0 and 6.5, the sludge that has been processed in the No. 1 treatment tank is normally transferred to the No. 2 treatment tank through the sludge conveying mechanism for treatment.

[0019] S5. When the sludge with a pH value between 6.0 and 6.5 is introduced into the No. 2 treatment tank, the supernatant with a pH value greater than 6.5 stored in the storage tank is introduced into the No. 5 connecting pipe through a water pump to raise the pH value of the sludge to the set range. When the conduit inside the No. 2 treatment tank and the pH sensor inside the No. 2 treatment tank detect that the pH value of the sludge inside the No. 2 treatment tank is abnormal, an alkaline regulator is added to the No. 2 treatment tank through the liquid adding pipe on the upper part of the feeding mechanism on the side of the No. 2 treatment tank;

[0020] S6. Similarly, oxygen is introduced into the No. 2 treatment tank through the oxygen supply equipment and the gas outlet assembly, and at the same time, the bottom stirring assembly and the middle stirring assembly are driven by the motor to stir the sludge inside the No. 2 treatment tank.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, the overflow liquid with a pH value greater than 6.5 is stored by the regulating mechanism of the No. 1 treatment tank. When the sludge enters the No. 2 treatment tank through the sludge transmission mechanism, it can be passed into the No. 5 connecting pipe by a water pump to raise the sludge pH to an appropriate range; the mixing impeller of the box body in the feeding mechanism initially stirs the reagent and sludge introduced through the liquid adding pipe, cooperates with the conduit and the cover body to disperse the sludge from the middle of the mixing mechanism, and then is fully stirred by the bottom stirring component and the middle stirring component. Combined with the real-time monitoring of the pH sensors in the No. 1 treatment tank, the No. 2 treatment tank and the conduit, the alkaline regulator can be replenished in time through the liquid adding pipe to ensure that the ozone oxidation reaction in the No. 1 treatment tank and the reaction in the oxygen environment in the No. 2 treatment tank are both carried out within the appropriate pH range, effectively solving the problem of inhibition of aerobic microbial activity caused by excessive acidity and improving the stability of the sludge reduction effect;

[0023] 2. In the present invention, the connecting shaft is driven by a motor to drive the No. 1 stirring component to scrape and stir the sludge at the bottom of the pool to prevent sludge deposition. When the No. 2 stirring component of the middle stirring component rotates, the wedge-shaped guide block cooperates with the wedge-shaped limit groove, and the height is reciprocated by the spring to enhance the stirring effect of the middle layer sludge. The storage tank of the adjustment mechanism collects the pH>6.5 supernatant overflowing from the No. 1 treatment pool through the No. 1 connecting pipe, and the storage is controlled by the valve. When the sludge pump of the sludge transmission mechanism transports the treated sludge to the No. 2 treatment pool through the No. 4 connecting pipe and the No. 5 connecting pipe, the water pump injects the supernatant in the storage tank into the No. 5 connecting pipe through the No. 3 connecting pipe to adjust the sludge pH and reduce the amount of reagents added to the No. 2 treatment pool through the liquid adding pipe, thereby improving the stirring uniformity and reducing the operating cost, thereby ensuring the stable reduction effect of the coupling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the first three-dimensional structure of a coupled sludge reduction device according to the present invention;

[0025] Figure 2 This is a second three-dimensional structural diagram of a coupled sludge reduction device according to the present invention;

[0026] Figure 3 This is a third three-dimensional structural diagram of a coupled sludge reduction device according to the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of a mixing mechanism in a coupled sludge reduction device of the present invention;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of a wedge-shaped guide block in a coupled sludge reduction device of the present invention;

[0029] Figure 6This is a schematic diagram of the lifting process of the second stirring component in a coupled sludge reduction device of the present invention;

[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of a sludge transmission mechanism in a coupled sludge reduction device of the present invention;

[0031] Figure 8 This is a schematic diagram of the internal three-dimensional structure of a box in a coupled sludge reduction device of the present invention;

[0032] Figure 9 This is a method flow chart of a coupled sludge reduction device of the present invention.

[0033] In the figure: 1. Treatment tank No. 1; 2. Treatment tank No. 2; 3. Ozone supply equipment; 4. Oxygen supply equipment; 5. Feed mechanism; 51. Box; 52. Conduit; 53. Cover; 54. Mixing impeller; 6. Mixing mechanism; 61. Fixing frame; 62. Motor; 63. Connecting shaft; 64. Stirring assembly No. 1; 65. Guide rail; 66. Wedge-shaped guide block; 67. Fixing plate; 68. Telescopic assembly; 69. Telescopic rod ; 610, spring; 611, connecting plate; 612, stirring assembly No. 2; 613, wedge-shaped limit groove; 7, adjustment mechanism; 71, storage tank; 72, connecting pipe No. 1; 73, connecting pipe No. 2; 74, valve; 75, water pump; 76, connecting pipe No. 3; 8, sludge transmission mechanism; 81, sludge pump; 82, connecting pipe No. 4; 83, connecting pipe No. 5; 9, liquid adding pipe; 10, feed pipe; 11, air outlet assembly. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Reference Figures 1-9As shown: a coupled sludge reduction device, including a treatment tank No. 1 1, a treatment tank No. 2 2, an ozone gas supply device 3 and an oxygen gas supply device 4, the structures of the treatment tank No. 1 1 and the treatment tank No. 2 2 are the same, and the upper parts of the treatment tank No. 1 1 and the treatment tank No. 2 2 are both provided with an overflow weir structure, the inside of the treatment tank No. 1 is subjected to ozone oxidation treatment, and the inside of the treatment tank No. 2 is subjected to aerobic digestion treatment, and a mixing mechanism 6 and an air outlet component 11 are installed in both, the treatment tank No. 1 and the treatment tank No. 2 are interconnected through a sludge transmission mechanism 8, the air outlet component 11 in the treatment tank No. 1 is fixedly connected to the ozone gas supply device 3, the air outlet component 11 in the treatment tank No. 2 is fixedly connected to the oxygen gas supply device 4, the sides of the treatment tank No. 1 and the treatment tank No. 2 are respectively provided with a feeding mechanism 5, An adjusting mechanism 7 is installed on the side of pool 1. The adjusting mechanism 7 is used to store overflow liquid with a pH value greater than 6.5, and the adjusting mechanism 7 is used to output the overflow liquid to the feeding mechanism 5 on the side of treatment pool No. 2 2. A liquid adding pipe 9 is fixedly connected to the upper part of the feeding mechanism 5, and a feeding pipe 10 is fixedly connected to the surface of the feeding mechanism 5 on the side of treatment pool No. 1 1. The liquid adding pipe 9 is externally connected to a drug supply device. The feeding mechanism 5 includes a box body 51, and a mixing impeller 54 is rotatably connected to the inside of the box body 51. A conduit 52 is fixedly connected to the side of the box body 51, and a cover body 53 is fixedly connected to the end of the conduit 52. pH sensors are installed inside treatment pool No. 1 1, treatment pool No. 2 2 and conduit 52. The mixing mechanism 6 includes a bottom stirring assembly and a middle stirring assembly. The middle stirring assembly performs lifting and stirring inside treatment pool No. 1 1 and treatment pool No. 2 2.

[0036] In this embodiment, the sludge is introduced into the interior of the No. 1 treatment tank 1 through the feed pipe 10 and the feed mechanism 5 on the side of the No. 1 treatment tank 1, and the required treatment agent is added to the interior of the box 51 through the liquid adding pipe 9. At the same time, ozone is introduced into the interior of the No. 1 treatment tank 1 through the ozone gas supply equipment 3 and the gas outlet component 11. At the same time, the bottom stirring component and the middle stirring component are driven by the motor 62 to stir the sludge. The pH value of the sludge in the No. 1 treatment tank 1 during the reaction is monitored by the pH sensor. When the pH value of the sludge in the No. 1 treatment tank 1 is lower than 6.0, an alkaline regulator is added to the interior of the box 51 through the liquid adding pipe 9. When the pH value of the sludge in the No. 1 treatment tank 1 is between 6.0-6.5, the sludge that has been processed in the No. 1 treatment tank 1 is normally passed into the No. 2 treatment tank through the sludge transmission mechanism 8. The sludge is treated inside the No. 2 treatment tank 2. When the sludge with a pH value between 6.0 and 6.5 is introduced into the No. 2 treatment tank 2, the supernatant with a pH value greater than 6.5 stored in the storage tank 71 is introduced into the No. 5 connecting pipe 83 through the water pump 75 to increase the pH value of the sludge to the set range. When the conduit 52 inside the No. 2 treatment tank 2 and the pH sensor inside the No. 2 treatment tank 2 itself detect that the pH value of the sludge inside the No. 2 treatment tank 2 is abnormal, an alkaline regulator is added to the No. 2 treatment tank 2 through the liquid adding pipe 9 on the upper part of the feeding mechanism 5 on the side of the No. 2 treatment tank 2, and oxygen is introduced into the No. 2 treatment tank 2 through the oxygen supply device 4 and the gas outlet component 11. At the same time, the bottom stirring component and the middle stirring component are driven by the motor 62 to stir the sludge inside the No. 2 treatment tank 2;

[0037] In the process of the sludge passing through the box 51 on the side of the No. 1 treatment tank 1 and entering the conduit 52, the mixing impeller 54 inside the box 51 will rotate under the action of the flow of the sludge, thereby performing an initial mixing and stirring of the reagent and the sludge introduced into the liquid adding pipe 9. The cover 53 is a tubular structure, and the bottom annular array of the cover 53 has multiple discharge ports. The sludge enters the interior of the cover 53 through the conduit 52, and is evenly discharged from the discharge port at the bottom of the cover 53, and is dispersed to the surroundings from the connecting shaft 63 in the mixing mechanism 6. At the same time, the sludge and the reagent are stirred by the mixing mechanism 6, so that the sludge can be quickly and evenly broken up. At the same time, ozone is injected into the No. 1 treatment tank 1 through the ozone supply equipment 3 and the gas outlet component 11 inside the No. 1 treatment tank 1 to reduce the sludge.

[0038] The overflow liquid with a pH value greater than 6.5 is stored by the regulating mechanism 7 of the No. 1 treatment tank 1. When the sludge enters the No. 2 treatment tank 2 through the sludge transmission mechanism 8, the sludge is passed into the No. 5 connecting pipe 83 by the water pump 75 to raise the sludge pH to an appropriate range; the mixing impeller 54 of the box 51 in the feeding mechanism 5 initially stirs the reagent and sludge introduced through the liquid adding pipe 9, and cooperates with the conduit 52 and the cover 53 to disperse the sludge from the middle of the mixing mechanism 6, and then fully stirs it through the bottom stirring component and the middle stirring component. Combined with the real-time monitoring of the pH sensors in the No. 1 treatment tank 1, the No. 2 treatment tank 2 and the conduit 52, the alkaline regulator can be replenished in time through the liquid adding pipe 9 to ensure that the ozone oxidation reaction in the No. 1 treatment tank 1 and the reaction in the oxygen environment in the No. 2 treatment tank 2 are both carried out within the appropriate pH range, effectively solving the problem of inhibition of aerobic microbial activity caused by excessive acidity and improving the stability of the sludge reduction effect.

[0039] In treatment tank No. 1, ozone oxidation treatment is carried out: sludge is introduced through the feed pipe 10 and the feed mechanism 5 on its side, treatment reagents are added through the liquid addition pipe 9, ozone is introduced by the ozone supply device 3 through the gas outlet assembly 11, and the bottom No. 1 stirring component 64 and the liftable middle No. 2 stirring component 612 stir the sludge to fully react with the ozone and reagents. At the same time, the pH sensor monitors and the alkaline regulator is added through the liquid addition pipe 9 to achieve oxidation and pretreatment of the sludge. The regulating mechanism 7 also collects the overflow liquid with a pH value greater than 6.5. In treatment tank No. 2, aerobic digestion treatment is carried out: the sludge treated in treatment tank No. 1 is received through the sludge transmission mechanism 8, oxygen is introduced by the oxygen supply device 4 through the gas outlet assembly 11, and stirring is also carried out through the mixing mechanism 6. The pH is adjusted by combining the replenishment of reagents through the liquid addition pipe 9 of the feed mechanism 5 and the overflow liquid transported by the regulating mechanism 7. Aerobic microorganisms are used to biodegrade the sludge whose biodegradability has been improved after ozone oxidation, completing the subsequent treatment of sludge reduction.

[0040] Example 2: Figures 1-8 As shown, the bottom stirring assembly includes a fixed frame 61, a motor 62 is fixedly connected to the upper part of the fixed frame 61, a connecting shaft 63 is fixedly connected to the output end of the motor 62, and a stirring assembly No. 1 64 is fixedly connected to the bottom of the connecting shaft 63. The stirring assembly No. 1 64 is used to stir and scrape the sludge.

[0041] The middle stirring assembly includes a fixed plate 67 and a guide rail 65. The fixed plate 67 is fixedly connected to the connecting shaft 63, and the bottom of the fixed plate 67 is fixedly connected to the telescopic assembly 68. The bottom of the telescopic assembly 68 is fixedly connected to the connecting plate 611. The connecting plate 611 is slidably connected to the connecting shaft 63, and the side of the connecting plate 611 is fixedly connected to the second stirring assembly 612. A wedge-shaped guide block 66 is slidably connected to the inside of the guide rail 65, and a wedge-shaped limiting groove 613 is provided inside the guide rail 65. The wedge-shaped guide block 66 is located inside the wedge-shaped limiting groove 613 and fits with the guide rail 65. The wedge-shaped guide block 66 is fixedly connected to the end of the second stirring assembly 612.

[0042] The telescopic assembly 68 includes a telescopic rod 69 and a spring 610. One end of the telescopic rod 69 is fixedly connected to the fixed plate 67, and the other end of the telescopic rod 69 is fixedly connected to the connecting plate 611. One end of the spring 610 is fixedly connected to the fixed plate 67, and the other end of the spring 610 is fixedly connected to the connecting plate 611.

[0043] The regulating mechanism 7 includes a storage tank 71, and a No. 1 connecting pipe 72 is installed on the upper part of the storage tank 71. One end of the No. 1 connecting pipe 72 is fixedly connected to the overflow weir structure of the No. 1 treatment tank 1, and the bottom of the No. 1 connecting pipe 72 is fixedly connected to the No. 2 connecting pipe 73, and a valve 74 is installed on the surface of the No. 2 connecting pipe 73. A water pump 75 is installed on the upper part of the storage tank 71, and one end of the water pump 75 is fixedly connected to the No. 3 connecting pipe 76, and the end of the No. 3 connecting pipe 76 is fixedly connected to the sludge transfer mechanism 8.

[0044] The sludge transfer mechanism 8 includes a sludge pump 81, and the ends of the sludge pump 81 are respectively installed with a No. 4 connecting pipe 82 and a No. 5 connecting pipe 83. The No. 4 connecting pipe 82 is fixedly connected to the bottom of the No. 1 treatment tank 1, the No. 5 connecting pipe 83 is fixedly connected to the box 51 on the side of the No. 2 treatment tank 2, and the end of the No. 3 connecting pipe 76 is fixedly connected to the No. 5 connecting pipe 83.

[0045] In this embodiment, when the mixing mechanism 6 is stirring the sludge, the motor 62 drives the connecting shaft 63 and the No. 1 stirring component 64 to rotate, thereby scraping and stirring the sludge inside the No. 1 treatment tank 1 and the sludge attached to the bottom wall of the No. 1 treatment tank 1. At the same time, the fixed plate 67 drives the connecting plate 611 and the No. 2 stirring component 612 to rotate, and the No. 2 stirring component 612 is used to stir the sludge in the middle layer of the No. 1 treatment tank 1. During the rotation process, the No. 2 stirring component 612 will generate a vertical upward movement when passing through the wedge-shaped limiting groove 613, thereby driving the No. 2 stirring component 612 to move upward. When it enters the wedge-shaped limiting groove 613 again, the height of the No. 2 stirring component 612 falls back, thereby completing the reciprocating motion of the No. 2 stirring component 612 with its height continuously adjusted during the stirring process.

[0046] The sludge processed in the No. 1 treatment tank 1 is transferred to the box 51 on the side of the No. 2 treatment tank 2 by the sludge conveying mechanism 8, and then enters the No. 2 treatment tank 2 through the conduit 52 and the cover 53. When it is necessary to add a conditioning or treatment agent to the No. 2 treatment tank 2 through the liquid adding pipe 9 on the upper part of the box 51 on the side of the No. 2 treatment tank 2, it is similarly preliminarily mixed by the mixing impeller 54 inside the box 51, and then the sludge is fully mixed by the mixing mechanism 6 inside the No. 2 treatment tank 2.

[0047] When the sludge is being treated in the No. 1 treatment tank 1, the supernatant is discharged through the overflow weir structure and the No. 1 connecting pipe 72. When the pH value of the supernatant is greater than 6.5, the valve 74 is opened to inject the supernatant into the storage tank 71 through the No. 2 connecting pipe 73. When the pH value of the sludge in the No. 1 treatment tank 1 is within a reasonable range, the pH value of the sludge in the No. 2 treatment tank 2 is adjusted by the supernatant stored in the storage tank 71, which can save the use of reagents.

[0048] The motor 62 drives the connecting shaft 63 to drive the No. 1 stirring component 64 to scrape and stir the sludge at the bottom of the pool to prevent sludge deposition. When the No. 2 stirring component 612 of the middle stirring component rotates, it uses the wedge-shaped guide block 66 to cooperate with the wedge-shaped limit groove 613, and realizes height reciprocating adjustment through the spring 610 to enhance the stirring effect of the middle layer sludge; the storage tank 71 of the regulating mechanism 7 collects the pH>6.5 supernatant overflowing from the No. 1 treatment pool 1 through the No. 1 connecting pipe 72, and controls the storage through the valve 74. When the sludge pump 81 of the sludge transmission mechanism 8 transports the treated sludge to the No. 2 treatment pool 2 through the No. 4 connecting pipe 82 and the No. 5 connecting pipe 83, the water pump 75 injects the supernatant in the storage tank 71 into the No. 5 connecting pipe 83 through the No. 3 connecting pipe 76 to adjust the sludge pH and reduce the amount of reagents added to the No. 2 treatment pool 2 through the liquid adding pipe 9, thereby improving the stirring uniformity and reducing the operating cost, thereby ensuring the stable reduction effect of the coupling process.

[0049] Example 3: Figure 9 As shown, a method for using a coupled sludge reduction device includes the following steps:

[0050] S1, the sludge is introduced into the No. 1 treatment tank 1 through the feed pipe 10 and the feed mechanism 5 on the side of the No. 1 treatment tank 1, the required treatment agent is added to the interior of the box 51 through the liquid adding pipe 9, and ozone is introduced into the No. 1 treatment tank 1 through the ozone gas supply device 3 and the gas outlet assembly 11;

[0051] S2. The bottom stirring assembly and the middle stirring assembly are driven by the motor 62 to stir the sludge at the same time;

[0052] S3, monitoring the pH of the sludge reaction inside the No. 1 treatment tank 1 through a pH sensor;

[0053] S4. When the pH value of the sludge in the No. 1 treatment tank 1 is lower than 6.0, an alkaline regulator is added to the interior of the housing 51 through the liquid adding pipe 9 to quickly adjust the pH value. When the pH value of the sludge in the No. 1 treatment tank 1 is between 6.0 and 6.5, the sludge that has been processed in the No. 1 treatment tank 1 is normally transferred to the interior of the No. 2 treatment tank 2 through the sludge conveying mechanism 8 for treatment.

[0054] S5. When the sludge with a pH value between 6.0 and 6.5 is introduced into the second treatment tank 2, the supernatant with a pH value greater than 6.5 stored in the storage tank 71 is introduced into the fifth connecting pipe 83 through the water pump 75 to raise the pH value of the sludge to the set range. When the conduit 52 inside the second treatment tank 2 and the pH sensor inside the second treatment tank 2 detect that the pH value of the sludge in the second treatment tank 2 is abnormal, an alkaline regulator is added to the second treatment tank 2 through the liquid adding pipe 9 on the upper part of the feeding mechanism 5 on the side of the second treatment tank 2;

[0055] S6. Similarly, oxygen is introduced into the second treatment tank 2 through the oxygen supply device 4 and the gas outlet component 11, and at the same time, the bottom stirring component and the middle stirring component are driven by the motor 62 to stir the sludge inside the second treatment tank 2.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coupled sludge reduction device, comprising a first treatment tank (1), a second treatment tank (2), an ozone gas supply device (3) and an oxygen gas supply device (4), wherein the first treatment tank (1) and the second treatment tank (2) have the same structure, and an overflow weir structure is provided on the upper part of the first treatment tank (1) and the second treatment tank (2), the sludge is subjected to ozone oxidation treatment in the first treatment tank (1), and the sludge is subjected to aerobic digestion treatment in the second treatment tank (2), and a mixing mechanism (6) and an air outlet component (11) are installed in both treatment tanks, the first treatment tank (1) and the second treatment tank (2) are connected to each other through a sludge transmission mechanism (8), the air outlet component (11) in the first treatment tank (1) is fixedly connected to the ozone gas supply device (3), and the air outlet component (11) in the second treatment tank (2) is fixedly connected to the oxygen gas supply device (4), and the device is characterized in that: The sides of the No. 1 treatment tank (1) and the No. 2 treatment tank (2) are both equipped with a feeding mechanism (5). The side of the No. 1 treatment tank (1) is equipped with an adjusting mechanism (7). The adjusting mechanism (7) is used to store overflow liquid with a pH value greater than 6.5, and the adjusting mechanism (7) is used to output the overflow liquid to the inside of the feeding mechanism (5) on the side of the No. 2 treatment tank (2). The upper part of the feeding mechanism (5) is fixedly connected to a liquid adding pipe (9), and the surface of the feeding mechanism (5) on the side of the No. 1 treatment tank (1) is fixedly connected to a feeding pipe (10). The liquid adding pipe (9) is externally connected to a drug supply device. The feeding mechanism (5) comprises a box (51), a mixing impeller (54) is rotatably connected to the inside of the box (51), a conduit (52) is fixedly connected to the side of the box (51), a cover (53) is fixedly connected to the end of the conduit (52), and pH sensors are installed inside the No. 1 treatment tank (1), the No. 2 treatment tank (2) and the conduit (52); The mixing mechanism (6) comprises a bottom stirring component and a middle stirring component, and the middle stirring component performs lifting and stirring inside the No. 1 treatment tank (1) and the No. 2 treatment tank (2).

2. A coupled sludge reduction device according to claim 1, characterized in that: The bottom stirring assembly comprises a fixed frame (61), the upper portion of the fixed frame (61) is fixedly connected to a motor (62), the output end of the motor (62) is fixedly connected to a connecting shaft (63), the bottom of the connecting shaft (63) is fixedly connected to a first stirring assembly (64), and the first stirring assembly (64) is used to stir and scrape the sludge.

3. The coupled sludge reduction device according to claim 2, characterized in that: The middle stirring assembly comprises a fixed plate (67) and a guide rail (65), wherein the fixed plate (67) is fixedly connected to the connecting shaft (63), and a telescopic assembly (68) is fixedly connected to the bottom of the fixed plate (67), and a connecting plate (611) is fixedly connected to the bottom of the telescopic assembly (68), and the connecting plate (611) is slidably connected to the connecting shaft (63), and a second stirring assembly (612) is fixedly connected to the side of the connecting plate (611), and a wedge-shaped guide block (66) is slidably connected inside the guide rail (65), and a wedge-shaped limiting groove (613) is provided inside the guide rail (65), and the wedge-shaped guide block (66) is located inside the wedge-shaped limiting groove (613) and fits with the guide rail (65), and the wedge-shaped guide block (66) is fixedly connected to the end of the second stirring assembly (612).

4. The coupled sludge reduction device according to claim 3, characterized in that: The telescopic assembly (68) includes a telescopic rod (69) and a spring (610), one end of the telescopic rod (69) is fixedly connected to the fixed plate (67), and the other end of the telescopic rod (69) is fixedly connected to the connecting plate (611), one end of the spring (610) is fixedly connected to the fixed plate (67), and the other end of the spring (610) is fixedly connected to the connecting plate (611).

5. The coupled sludge reduction device according to claim 1, characterized in that: The regulating mechanism (7) comprises a storage tank (71), a No. 1 connecting pipe (72) is installed on the upper part of the storage tank (71), one end of the No. 1 connecting pipe (72) is fixedly connected to the overflow weir structure of the No. 1 treatment tank (1), and a No. 2 connecting pipe (73) is fixedly connected to the bottom of the No. 1 connecting pipe (72), a valve (74) is installed on the surface of the No. 2 connecting pipe (73), and a water pump (75) is installed on the upper part of the storage tank (71), one end of the water pump (75) is fixedly connected to the No. 3 connecting pipe (76), and the end of the No. 3 connecting pipe (76) is fixedly connected to the sludge transmission mechanism (8).

6. The coupled sludge reduction device according to claim 5, characterized in that: The sludge transmission mechanism (8) comprises a sludge pump (81), and a No. 4 connecting pipe (82) and a No. 5 connecting pipe (83) are respectively installed at the ends of the sludge pump (81), the No. 4 connecting pipe (82) is fixedly connected to the bottom of the No. 1 treatment tank (1), the No. 5 connecting pipe (83) is fixedly connected to the box (51) on the side of the No. 2 treatment tank (2), and the end of the No. 3 connecting pipe (76) is fixedly connected to the No. 5 connecting pipe (83).

7. A method for using a coupled sludge reduction device, characterized in that: A coupled sludge reduction device according to any one of claims 1 to 6 is used, comprising the following steps: S1, introducing the sludge into the No. 1 treatment tank (1) through the feed pipe (10) and the feed mechanism (5) on the side of the No. 1 treatment tank (1), adding the required treatment agent into the box (51) through the liquid adding pipe (9), and simultaneously introducing ozone into the No. 1 treatment tank (1) through the ozone gas supply device (3) and the gas outlet assembly (11); S2, simultaneously driving the bottom stirring assembly and the middle stirring assembly to stir the sludge through the motor (62); S3, monitoring the pH of the sludge reaction inside the No. 1 treatment tank (1) through a pH sensor; S4. When the pH value of the sludge in the No. 1 treatment tank (1) is lower than 6.0, an alkaline regulator is added to the interior of the tank (51) through the liquid adding pipe (9) to quickly adjust the pH value. When the pH value of the sludge in the No. 1 treatment tank (1) is between 6.0 and 6.5, the sludge processed in the No. 1 treatment tank (1) is normally passed through the sludge conveying mechanism (8) into the No. 2 treatment tank (2) for treatment. S5. When the sludge with a pH value between 6.0 and 6.5 is introduced into the No. 2 treatment tank (2), the supernatant with a pH value greater than 6.5 stored in the storage tank (71) is introduced into the No. 5 connecting pipe (83) through the water pump (75) to increase the pH value of the sludge to the set range. When the conduit (52) inside the No. 2 treatment tank (2) and the pH sensor inside the No. 2 treatment tank (2) detect that the pH value of the sludge inside the No. 2 treatment tank (2) is abnormal, an alkaline regulator is added into the No. 2 treatment tank (2) through the liquid adding pipe (9) on the upper part of the feeding mechanism (5) on the side of the No. 2 treatment tank (2); S6. Oxygen is introduced into the interior of the No. 2 treatment tank (2) through the oxygen supply device (4) and the gas outlet assembly (11), and at the same time, the bottom stirring assembly and the middle stirring assembly are driven by the motor (62) to stir the sludge inside the No. 2 treatment tank (2).

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