Anaerobic sewage treatment system

Abstract

The invention discloses an anaerobic sewage treatment system, and relates to the technical field of anaerobic sewage treatment.The anaerobic sewage treatment system comprises a supporting frame, the upper side of the supporting frame is fixedly connected with an anaerobic jar used for storing anaerobic water, the outer side of the anaerobic jar is fixedly connected with a ladder stand, the upper side of the anaerobic jar is fixedly connected with a gas storage tank used for storing gas, and the gas storage tank is fixedly connected with a gas outlet of the ladder stand. The outer side of the anaerobic jar is also provided with a water conveying mechanism for conveying anaerobic water into the anaerobic jar, and the upper part in the anaerobic jar is fixedly connected with a three-phase separator for separating the anaerobic water into solid, liquid and gas and sequentially conveying the solid, the liquid and the gas. The water spraying pipeline is arranged in the anaerobic tank, so that anaerobic water is continuously sprayed out from the interior of the water spraying pipeline, sludge particles accumulated below the anaerobic tank are continuously pushed upwards, then anaerobic microorganisms can be decomposed into organic matters above the anaerobic water, and the decomposition efficiency of the organic matters is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of anaerobic sewage treatment, and specifically to an anaerobic sewage treatment system. Background Art

[0002] Anaerobic sewage treatment technology is a biological treatment method that, under anaerobic conditions, uses anaerobic microorganisms to decompose organic substances in wastewater and convert them into useful substances such as biogas. This technology has the advantages of high efficiency in removing organic pollutants, low energy consumption, small and stable amount of excess sludge, and good dewatering performance. It is suitable for treating various organic wastewater, especially showing excellent performance in treating high-concentration organic wastewater.

[0003] Among them, the UASB (Upflow Anaerobic Sludge Bed) reactor is widely used in anaerobic sewage treatment technology. The UASB reactor introduces sewage from the bottom upwards into the bottom of the reactor, enabling the sewage to come into full contact with high-concentration anaerobic granular sludge. Under the action of anaerobic microorganisms, the organic substances in the sewage are decomposed into biogas (mainly composed of methane and carbon dioxide) and inorganic substances. The three-phase separator at the upper part of the reactor separates the generated biogas, sludge, and treated water. The biogas is collected and utilized, the sludge is refluxed to the reactor, and the treated water is discharged from the system.

[0004] Although the UASB reactor is an anaerobic environment, there may be differences in the local dissolved oxygen content. The presence of dissolved oxygen will inhibit the growth of some anaerobic microorganisms, while it may have little impact on facultative anaerobic microorganisms. If the dissolved oxygen content in the left and right regions inside the anaerobic tank is different, it will lead to differences in the types and quantities of microorganisms. The difference in the quantity of microorganisms will cause uneven wastewater treatment effects inside the reactor. In the area with a large number of microorganisms, the decomposition and conversion efficiency of organic substances is high, while in the area with a small number of microorganisms, the treatment capacity is insufficient, resulting in a decline in the overall treatment efficiency.

[0005] Therefore, it is necessary to design an anaerobic sewage treatment system with uniform distribution of anaerobic microorganisms and high efficiency in degrading organic substances. Summary of the Invention

[0006] The purpose of the present invention is to provide an anaerobic sewage treatment system to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the present invention provides the following technical solution: An anaerobic sewage treatment system includes a support frame. A anaerobic tank for storing anaerobic water is fixedly connected to the upper side of the support frame. A ladder is fixedly connected to the outer side of the anaerobic tank. A gas storage tank for storing gas is fixedly connected to the upper side of the anaerobic tank. A water supply mechanism for transporting anaerobic water into the anaerobic tank is further provided on the outer side of the anaerobic tank. Above the interior of the anaerobic tank, a three-phase separator for separating anaerobic water into solids, liquids, and gases and sequentially transporting them is fixedly connected. Below the three-phase separator, a stirring mechanism for stirring sludge particles inside the anaerobic water and driving the sludge particles to move up and down according to the number of sludge particles in the upper and lower regions inside the anaerobic tank is provided. On one side of the stirring mechanism, a regional detection mechanism for detecting the sludge particle concentration in the upper and lower regions inside the anaerobic tank is provided. Below the stirring mechanism, a transmission mechanism for driving the regional detection mechanism and the stirring mechanism to move is provided.

[0008] According to the above technical solution, the water supply mechanism includes a second water supply pipe and a plurality of water spraying pipes provided below the transmission mechanism. The plurality of water spraying pipes are combined into a circle for spraying anaerobic water. A second water pump is provided below the anaerobic tank. The output end of the second water pump is connected to the water spraying pipes. The input end of the second water pump is fixedly connected to a third water supply pipe. The other end of the third water supply pipe is fixedly connected to a three-way valve. The other end of the three-way valve is fixedly connected to a second water stop valve. The upper end of the three-way valve is fixedly connected to a first water stop valve. The second water supply pipe is fixedly connected to the other end of the first water stop valve. A first water pump is fixedly connected to the outer side of the anaerobic tank. The output end of the first water pump is connected to the other end of the second water supply pipe. The input end of the first water pump is fixedly connected to a first water supply pipe. The other end of the first water supply pipe penetrates the anaerobic tank and is fixedly connected to the anaerobic tank.

[0009] According to the above technical solution, the transmission mechanism includes a water blocking block fixedly connected inside the second water supply pipe. A transmission shaft is rotatably connected inside the second water supply pipe. A plurality of arc-shaped pieces are evenly and fixedly connected to the outer side of the transmission shaft. When the arc-shaped pieces are driven by the transmission shaft to rotate, they fit with the water blocking block. One end of the transmission shaft penetrates the second water supply pipe and is fixedly connected to a first rotating shaft. A first fixed cylinder is provided at the other end of the first rotating shaft. A plurality of connecting rods are fixedly connected to the outer side of the first fixed cylinder and the connecting rods are fixedly connected to the inner wall of the anaerobic tank. Inside the first fixed cylinder, a first bevel gear, a second bevel gear, and a third bevel gear are respectively connected by bearings. The second bevel gear is meshed with the first bevel gear and the third bevel gear respectively. The other end of the first rotating shaft is fixedly connected to the first bevel gear. The other end of the second bevel gear is fixedly connected to a second rotating shaft. The other end of the third bevel gear is fixedly connected to a third rotating shaft.

[0010] According to the above technical solution, the stirring mechanism includes a second fixed cylinder fixedly connected to the other end of the second rotating shaft. A power box is fixedly connected inside the second fixed cylinder. A motor is fixedly connected to the upper side of the power box. Four fourth bevel gears are evenly connected by bearings inside the motor. The other end of each fourth bevel gear is fixedly connected with a fan blade. Each of the fourth bevel gears is meshed with each other. A fifth bevel gear is meshed with the upper side of each of the four fourth bevel gears. The other end of the fifth bevel gear penetrates through the upper wall of the power box and is fixedly connected with the output end of the motor.

[0011] According to the above technical solution, the area detection mechanism includes a second connecting rod fixedly connected to the other end of the third rotating shaft. The other end of the second connecting rod is hinged with a first connecting rod. A guide slide bar is arranged on one side of the first connecting rod and is fixedly connected with the inner wall of the anaerobic tank. The other end of the first connecting rod is hinged with a slider. A sludge concentration sensor is fixedly connected to one side of the slider. A chute is arranged inside the guide slide bar. The slider is slidably connected with the chute.

[0012] According to the above technical solution, a number of first tooth columns are evenly arranged inside the chute. Two seventh bevel gears and a sixth bevel gear are respectively connected by bearings inside the slider. The other ends of the two seventh bevel gears are respectively fixedly connected with an upper fan and a lower fan. The other end of the sixth bevel gear is fixedly connected with a column gear. The column gear is meshed with the first tooth column.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. By providing a water supply mechanism, continuous anaerobic water is sprayed out from the inside of the spray pipe, thereby continuously pushing the sludge particles accumulated below the anaerobic tank upward, so that anaerobic microorganisms can also decompose the organic matter above the anaerobic water, improving the decomposition efficiency of the organic matter.

[0014] 2. The anaerobic water circulation drives the first rotating shaft to rotate. When the first rotating shaft rotates, it can not only drive the fan blades to rotate around the second fixed cylinder as the axis to evenly stir the sludge particles, but also drive the sludge concentration sensor to move up and down to continuously detect the sludge particle concentration above and below the anaerobic water inside the anaerobic tank. When the sludge particle concentration above the anaerobic water is greater than or less than that below, the motor controls the fan blades to rotate, so that the fan blades are respectively in the reverse blade or positive blade state, driving the sludge particles above and below the anaerobic water inside the anaerobic tank to move downward or upward respectively, so that the sludge particle concentration above and below the anaerobic water inside the anaerobic tank is always kept relatively balanced, achieving the effects of uniform decomposition of organic matter by microorganisms and high efficiency of decomposing organic matter.

[0015] 3. Through the transmission of spur gears and the sixth bevel gear, the upper fan and the lower fan are driven to rotate, generating thrust. Thus, while the slider moves up and down, the sludge particles above or below the slider are pushed, causing most of the sludge particles to be pushed out of the inside of the chute, effectively preventing most particles from entering the inside of the guide slide bar, which may cause the slider to squeeze the sludge particles when moving up and down, resulting in mechanical damage to the microorganisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of an anaerobic sewage treatment system of the present invention; Figure 2 is a schematic diagram of the structure of the water supply mechanism in the present invention; Figure 3 is a schematic diagram of the internal structure of the anaerobic tank in the present invention; Figure 4 In the present invention Figure 3 is an enlarged schematic diagram of Area A; Figure 5 is a schematic diagram of the structure of the transmission mechanism in the present invention; Figure 6 is a schematic diagram of the structure of the stirring mechanism in the present invention; Figure 7 is a schematic diagram of the internal structure of the power box in the present invention; Figure 8 is a schematic diagram of the structure of the area detection mechanism in the present invention; Figure 9 is a schematic diagram of the internal structure of the guide slide bar in the present invention; Figure 10 In the present invention Figure 9 is an enlarged schematic diagram of Area B; Figure 11 is a schematic diagram of the motion state of the area detection mechanism in the present invention; Figure 12 is a schematic diagram of the swing angle of the fan blades of the stirring mechanism in the present invention; In the figure: 1. Anaerobic tank; 2. Gas storage tank; 3. Water supply mechanism; 31. First water supply pipe; 32. First water pump; 33. Second water supply pipe; 34. First water stop valve; 35. Second water stop valve; 36. Three-way valve; 37. Second water pump; 38. Third water supply pipe; 39. Spraying pipeline; 4. Ladder; 5. Support frame; 6. Transmission mechanism; 61. Water baffle; 62. Arc piece; 63. First fixed cylinder; 64. First rotating shaft; 65. First bevel gear; 66. Second rotating shaft; 67. Second bevel gear; 68. Third rotating shaft; 69. Third bevel gear; 7. Area detection mechanism; 71. Slide block; 711. Cylindrical gear; 712. Sixth bevel gear; 713. First tooth column; 714. Upper fan; 715. Seventh bevel gear; 716. Lower fan; 72. Guide slide bar; 73. Sludge concentration sensor; 74. First connecting rod; 75. Second connecting rod; 8. Stirring mechanism; 81. Second fixed cylinder; 82. Blades; 83. Motor; 84. Power box; 85. Fourth bevel gear; 86. Fifth bevel gear; 9. Three-phase separator. Specific implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1-12 , the present invention provides a technical solution: an anaerobic sewage treatment system, including a support frame 5, an anaerobic tank 1 for storing anaerobic water is fixedly connected to the upper side of the support frame 5, a ladder 4 is fixedly connected to the outer side of the anaerobic tank 1, a gas storage tank 2 for storing gas is fixedly connected to the upper side of the anaerobic tank 1, a water supply mechanism 3 for transporting anaerobic water into the anaerobic tank 1 is further provided on the outer side of the anaerobic tank 1, a three-phase separator 9 for separating anaerobic water into solids, liquids and gases and sequentially transporting them is fixedly connected above the inside of the anaerobic tank 1, a stirring mechanism 8 for stirring sludge particles inside the anaerobic water and driving the sludge particles to move up and down according to the number of sludge particles in the upper and lower regions inside the anaerobic tank 1 is provided below the three-phase separator 9, an area detection mechanism 7 for detecting the sludge particle concentration in the upper and lower regions inside the anaerobic tank 1 is provided on one side of the stirring mechanism 8, and a transmission mechanism 6 for driving the area detection mechanism 7 and the stirring mechanism 8 to move is provided below the stirring mechanism 8.

[0019] Please refer to Figure 2, the water delivery mechanism 3 includes a second water delivery pipe 33 and several spray pipes 39 disposed below the transmission mechanism 6. The several spray pipes 39 are combined into a circle for anaerobic water spraying. A second water pump 37 is provided on the lower side of the anaerobic tank 1. The output end of the second water pump 37 is connected to the spray pipes 39 through a pipe. The input end of the second water pump 37 is fixedly connected to a third water delivery pipe 38. The other end of the third water delivery pipe 38 is fixedly connected to a three-way valve 36. The other end of the three-way valve 36 is fixedly connected to a second water stop valve 35. The upper end of the three-way valve 36 is fixedly connected to a first water stop valve 34. The second water delivery pipe 33 is fixedly connected to the other end of the first water stop valve 34. A first water pump 32 is fixedly connected to the outside of the anaerobic tank 1. The output end of the first water pump 32 is fixedly connected to the other end of the second water delivery pipe 33. The input end of the first water pump 32 is fixedly connected to a first water delivery pipe 31. The other end of the first water delivery pipe 31 penetrates through the anaerobic tank 1 and is fixedly connected to the anaerobic tank 1.

[0020] Specifically, the second water pump 37 is used to pump new anaerobic water into the anaerobic tank 1. The first water pump 32 is used to pump the anaerobic water above the anaerobic tank 1 to the lower part of the anaerobic tank 1, so as to carry out anaerobic water circulation. The spray pipes 39 are used to spray the anaerobic water from bottom to top, thereby indirectly driving the sludge particles deposited below the anaerobic tank 1 to move upward.

[0021] When new anaerobic water needs to be added to the anaerobic tank 1, the second water stop valve 35 is opened, the first water stop valve 34 is closed, and the second water pump 37 is started. The anaerobic water passes through the third water delivery pipe 38 and sprays out from the inside of the spray pipes 39. When the spray pipes 39 are combined into a circle for spraying, the upward-sprayed anaerobic water is more uniform, so that the sludge particles below the anaerobic tank 1 move upward evenly.

[0022] When anaerobic water circulation needs to be carried out, the second water stop valve 35 is closed, the first water stop valve 34 is opened, and the first water pump 32 is started. The anaerobic water above the anaerobic tank 1 enters the inside of the first water delivery pipe 31, and successively passes through the second water delivery pipe 33 and the third water delivery pipe 38, and finally sprays out from the inside of the spray pipes 39.

[0023] By providing the water delivery mechanism 3, continuous anaerobic water sprays out from the inside of the spray pipes 39, thereby continuously pushing the sludge particles accumulated below the anaerobic tank 1 upward, and further enabling anaerobic microorganisms to decompose the organic matter above the anaerobic water, improving the decomposition efficiency of the organic matter.

[0024] Example 2. When the distribution of the influent organic matter concentration is uneven, the difference in the microbial growth environment between the upper and lower regions in the reactor will become larger, and the microorganisms will grow and reproduce relatively fast. When the organic matter concentration in the upper region is low, the number of microorganisms is relatively small. While in the lower region near the water inlet, the organic matter concentration is high, and the large number of microorganisms in the bottom region will make the sludge bed dense, resulting in a large resistance when the water flows through, leading to uneven water flow distribution, and the water flow speed in some regions is too slow, affecting the full contact between the wastewater and the microorganisms. Moreover, during the operation of the UASB reactor, if the hydraulic retention time is shortened and the water flow speed is increased, the microorganisms in the lower region will be quickly flushed out of the reactor, while the microorganisms in the upper region are closer to the water outlet and are more likely to stay and accumulate in the reactor, resulting in the situation where the number of microorganisms in the upper region is more than that in the lower region, leading to insufficient decomposition and conversion ability of the organic matter in the sewage in the lower region, reducing the removal efficiency of the organic matter in the reactor and deteriorating the effluent quality. Therefore, the following structure is designed to solve the above technical problems.

[0025] Please refer to Figure 4 and Figure 5 , the transmission mechanism 6 includes a water-blocking block 61 fixedly connected inside the second water delivery pipe 33. A transmission shaft is rotatably connected inside the second water delivery pipe 33. A plurality of arc-shaped pieces 62 are evenly and fixedly connected to the outer side of the transmission shaft. When the arc-shaped pieces 62 are driven by the transmission shaft to rotate, they fit with the water-blocking block 61. One end of the transmission shaft penetrates through the second water delivery pipe 33 and is fixedly connected to a first rotating shaft 64. A first fixing cylinder 63 is provided at the other end of the first rotating shaft 64. A plurality of connecting rods are fixedly connected to the outer side of the first fixing cylinder 63 and the connecting rods are fixedly connected to the inner wall of the anaerobic tank 1. A first bevel gear 65, a second bevel gear 67 and a third bevel gear 69 are respectively connected to the inside of the first fixing cylinder 63 through bearings. The second bevel gear 67 is meshed with the first bevel gear 65 and the third bevel gear 69 respectively. The other end of the first rotating shaft 64 is fixedly connected to the first bevel gear 65. A second rotating shaft 66 is fixedly connected to the other end of the second bevel gear 67. A third rotating shaft 68 is fixedly connected to the other end of the third bevel gear 69.

[0026] Specifically, when the anaerobic water circulation is carried out, the anaerobic water is driven to be transported from top to bottom. When passing through the second water delivery pipe 33, the anaerobic water is guided by the water-blocking block 61, impacts one of the arc-shaped pieces 62, and presses the arc-shaped piece 62 downward through the water pressure, so that each arc-shaped piece 62 rotates clockwise along the transmission shaft, and then drives the first rotating shaft 64 to rotate clockwise.

[0027] While the first rotating shaft 64 rotates clockwise, it drives the second rotating shaft 66 to rotate counterclockwise, thereby driving the third rotating shaft 68 to rotate clockwise.

[0028] Please refer to Figure 6 and Figure 7, the stirring mechanism 8 includes a second fixed cylinder 81 fixedly connected to the other end of the second rotating shaft 66. A power box 84 is fixedly connected inside the second fixed cylinder 81. An electric motor 83 is fixedly connected to the upper side of the power box 84. Four fourth bevel gears 85 are evenly connected by bearings inside the electric motor 83. The other end of each fourth bevel gear 85 is fixedly connected with a fan blade 82. Each of the four fourth bevel gears 85 is meshed with each other. A fifth bevel gear 86 is meshed with the upper side of each of the four fourth bevel gears 85. The other end of the fifth bevel gear 86 penetrates through the upper wall of the power box 84 and is fixedly connected to the output end of the electric motor 83.

[0029] Specifically, while the second rotating shaft 66 is driven to rotate counterclockwise, it indirectly drives the second fixed cylinder 81 to rotate counterclockwise, thereby driving the four fan blades 82 to rotate counterclockwise with the second fixed cylinder 81 as the axis. The four fan blades 82 are in a vertical state in the initial state. When the four fan blades 82 rotate, they drive the surrounding sludge particles to move, thereby stirring the surrounding sludge particles evenly.

[0030] Please refer to Figure 12 , c is the vertical state of the fan blade 82. When the fan blade 82 rotates counterclockwise with the second fixed cylinder 81 as the axis, it stirs the surrounding sewage particles evenly. d is the reverse blade state of the fan blade 82. When the fan blade 82 rotates counterclockwise with the second fixed cylinder 81 as the axis, it drives the sewage particles above the fan blade 82 downward. c is the forward blade state of the fan blade 82. When the fan blade 82 rotates counterclockwise with the second fixed cylinder 81 as the axis, it drives the sewage particles below the fan blade 82 upward.

[0031] When the output end of the electric motor 83 rotates clockwise by 30 degrees, the fifth bevel gear 86 is driven to rotate clockwise, thereby driving each fan blade 82 to rotate counterclockwise by 30 degrees with the fourth bevel gear 85 as the axis, and then changing the fan blade 82 to the forward blade state.

[0032] When the output end of the electric motor 83 rotates counterclockwise by 30 degrees, the fifth bevel gear 86 is driven to rotate counterclockwise, thereby driving each fan blade 82 to rotate clockwise by 30 degrees with the fourth bevel gear 85 as the axis, and then changing the fan blade 82 to the reverse blade state.

[0033] Please refer to Figure 8 and Figure 9 , the area detection mechanism 7 includes a second connecting rod 75 fixedly connected to the other end of the third rotating shaft 68. The other end of the second connecting rod 75 is hinged with a first connecting rod 74. A guide slide bar 72 is provided on one side of the first connecting rod 74 and the guide slide bar 72 is fixedly connected to the inner wall of the anaerobic tank 1. The other end of the first connecting rod 74 is hinged with a slider 71. A sludge concentration sensor 73 is fixedly connected to one side of the slider 71. A chute is provided inside the guide slide bar 72, and the slider 71 is slidably connected to the chute.

[0034] Specifically, the transmission mechanism 6, the area detection mechanism 7, and the stirring mechanism 8 are all made of stainless steel. When the infrared light source of the sludge concentration sensor 73 detects, it emits an infrared beam with a specific wavelength. When the light passes through the anaerobic water containing sludge particles, it interacts with the sludge particles, including being absorbed, reflected, and scattered. The intensity of the scattered light is positively correlated with the number and concentration of sludge particles, that is, the more sludge particles and the higher the concentration, the stronger the intensity of the scattered light. The photosensitive receiver inside the sensor detects the scattered light at a specific angle to the incident beam and converts the received optical signal into an electrical signal. Through the built-in algorithm and calibration curve, the electrical signal is converted into a value of sludge concentration. Finally, the sensor outputs the calculated sludge concentration data for real-time monitoring of the change in sludge concentration during the sewage treatment process.

[0035] Please refer to Figure 11 , Figure a shows the motion state of the area detection mechanism 7 when the sludge concentration sensor 73 is above the anaerobic tank 1. Figure b shows the motion state of the area detection mechanism 7 when the sludge concentration sensor 73 is below the anaerobic tank 1. Figure a shows the initial state of the area detection mechanism 7. The third rotating shaft 68 rotates clockwise and drives the second connecting rod 75 to rotate clockwise. Since one end of the second connecting rod 75 is hinged to one end of the first connecting rod 74, when the second connecting rod 75 rotates clockwise from zero degrees to ninety degrees, the first connecting rod 74 is driven to swing counterclockwise and move downward. When the second connecting rod 75 rotates clockwise from ninety degrees to one hundred and eighty degrees, the first connecting rod 74 is driven to swing clockwise and move downward, thereby driving the first connecting rod 74 to swing and move downward, and further driving the slider 71 to move downward along the chute, so that the sludge concentration sensor 73 moves downward along the chute until the second connecting rod 75 rotates clockwise by one hundred and eighty degrees and the sludge concentration sensor 73 reaches the bottom of the chute. The second connecting rod 75 rotates clockwise again, and the sludge concentration sensor 73 is driven upward by the slider 71 again until the second connecting rod 75 rotates clockwise by one hundred and eighty degrees again and the sludge concentration sensor 73 reaches the top of the chute. Whenever the second connecting rod 75 rotates by one hundred and eighty degrees, the sludge concentration sensor 73 detects the concentration of sludge particles in this area, so as to detect the concentration of sludge particles in the anaerobic water above and below the anaerobic tank 1 respectively.

[0036] When the sludge concentration sensor 73 detects that the sludge particle concentration of the anaerobic water above the inside of the anaerobic tank 1 is greater than that of the anaerobic water below, when the output end of the motor 83 rotates counterclockwise by thirty degrees, the fifth bevel gear 86 is driven to rotate counterclockwise, thereby driving each fan blade 82 to rotate clockwise by thirty degrees around the fourth bevel gear 85 as the axis, and then the fan blade 82 becomes the reverse blade state. At this time, the fan blade 82 rotates counterclockwise around the second fixed cylinder 81, generating a downward thrust to drive the sewage particles above the fan blade 82 downward until the next time the sludge concentration sensor 73 detects that the difference in the sludge particle concentration of the anaerobic water above and below the inside of the anaerobic tank 1 is less than one percent. Then, the output end of the motor 83 rotates clockwise by thirty degrees to make the fan blade 82 become the vertical state and continue to evenly stir the sludge particles.

[0037] When the sludge concentration sensor 73 detects that the sludge particle concentration of the anaerobic water above the inside of the anaerobic tank 1 is less than that of the anaerobic water below, when the output end of the motor 83 rotates clockwise by thirty degrees, the fifth bevel gear 86 is driven to rotate clockwise, thereby driving each fan blade 82 to rotate counterclockwise by thirty degrees around the fourth bevel gear 85 as the axis, and then the fan blade 82 becomes the positive blade state. At this time, the fan blade 82 rotates counterclockwise around the second fixed cylinder 81, generating an upward thrust to drive the sewage particles above the fan blade 82 upward until the next time the sludge concentration sensor 73 detects that the difference in the sludge particle concentration of the anaerobic water above and below the inside of the anaerobic tank 1 is less than one percent. Then, the output end of the motor 83 rotates counterclockwise by thirty degrees to make the fan blade 82 become the vertical state and continue to evenly stir the sludge particles.

[0038] The anaerobic water circulation drives the first rotating shaft 64 to rotate. When the first rotating shaft 64 rotates, it can not only drive the fan blade 82 to rotate around the second fixed cylinder 81 as the axis to evenly stir the sludge particles, but also drive the sludge concentration sensor 73 to move up and down to detect the sludge particle concentration above and below the anaerobic water inside the anaerobic tank 1 in real time. And when the sludge particle concentration above the anaerobic water is greater than or less than that below, the motor 83 controls the rotation of the fan blade 82 to make the fan blade 82 become the reverse blade or positive blade state respectively, driving the sludge particles above and below the anaerobic water inside the anaerobic tank 1 to move downward or upward respectively, so that the sludge particle concentration above and below the anaerobic water inside the anaerobic tank 1 is always kept relatively balanced, achieving the effects of uniform decomposition of organic matter by microorganisms and high efficiency of decomposing organic matter.

[0039] Embodiment 3. Since the sizes and densities of different sludge particles affect their movement states in water, smaller particles and particles with lower densities are more likely to be affected by water flow and move. In some reactors, larger particles may settle due to their own weight, while smaller particles may be lifted and flow around under the action of water flow. When flowing, most particles will enter the inside of the guide slide bar 72, resulting in the slider 71 squeezing the sludge particles when moving up and down. The sludge particles contain a large number of anaerobic microorganisms, and the sliding and pressure of the slider 71 may cause mechanical damage to the microorganisms, affecting their activity and metabolic functions. The reduction of microbial activity will weaken the decomposition and conversion ability of sludge particles to organic matter, affecting the treatment effect of the UASB reactor. Therefore, the following structure is designed to solve the above technical problems.

[0040] Please refer to Figure 10 , a number of first tooth columns 713 are evenly arranged inside the chute. Two seventh bevel gears 715 and a sixth bevel gear 712 are respectively connected by bearings inside the slider 71. The other ends of the two seventh bevel gears 715 are respectively fixedly connected with an upper fan 714 and a lower fan 716. The other end of the sixth bevel gear 712 is fixedly connected with a column gear 711, and the column gear 711 is meshed and connected with the first tooth column 713.

[0041] Specifically, when the slider 71 moves upward, the column gear 711 is driven by the first tooth column 713 to rotate clockwise, thereby driving the sixth bevel gear 712 to rotate clockwise, and further driving the upper fan 714 to rotate clockwise. The lower fan 716 rotates counterclockwise. While the upper fan 714 rotates, it generates a thrust to push the sludge particles above the slider 71, so that most of the sludge particles are pushed out of the inside of the chute.

[0042] When the slider 71 moves downward, the column gear 711 is driven by the first tooth column 713 to rotate counterclockwise, thereby driving the sixth bevel gear 712 to rotate counterclockwise, and further driving the upper fan 714 to rotate counterclockwise. The lower fan 716 rotates clockwise. While the lower fan 716 rotates, it generates a thrust to push the sludge particles below the slider 71, so that most of the sludge particles are pushed out of the inside of the chute.

[0043] Through the transmission of the column gear 711 and the sixth bevel gear 712, the upper fan 714 and the lower fan 716 are driven to rotate, generating a thrust. Thus, while the slider 71 moves up and down, the sludge particles above or below the slider 71 are pushed, so that most of the sludge particles are pushed out of the inside of the chute, effectively preventing the phenomenon that most particles will enter the inside of the guide slide bar 72, resulting in the slider 71 squeezing the sludge particles when moving up and down and causing mechanical damage to the microorganisms.

[0044] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anaerobic sewage treatment system, comprising a support frame (5), characterized in that: An anaerobic tank (1) is fixedly connected to the upper side of the support frame (5), a gas storage tank (2) is fixedly connected to the upper side of the anaerobic tank (1), a water supply mechanism (3) is also provided on the outer side of the anaerobic tank (1), a three-phase separator (9) is fixedly connected to the upper part of the interior of the anaerobic tank (1), a stirring mechanism (8) is provided on the lower side of the three-phase separator (9) for stirring sludge particles inside the anaerobic water and driving the sludge particles to move up and down according to the number of sludge particles in the upper and lower areas inside the anaerobic tank (1), a regional detection mechanism (7) is provided on one side of the stirring mechanism (8) for detecting the concentration of sludge particles in the upper and lower areas inside the anaerobic tank (1), and a transmission mechanism (6) is provided on the lower side of the stirring mechanism (8); The water supply mechanism (3) comprises a second water supply pipe (33) and a plurality of water spray pipes (39) arranged below the transmission mechanism (6); The transmission mechanism (6) comprises a water retaining block (61) fixedly connected to the inside of the second water supply pipe (33); the inside of the second water supply pipe (33) is rotatably connected to a transmission shaft; the outside of the transmission shaft is evenly and fixedly connected to a plurality of arc pieces (62); one end of the transmission shaft passes through the second water supply pipe (33) and is fixedly connected to a first rotating shaft (64); the other end of the first rotating shaft (64) is provided with a first fixed cylinder (63); the inside of the first fixed cylinder (63) is respectively connected to a first bevel gear (65), a second bevel gear (67) and a third bevel gear (69) by bearings; the second bevel gear (67) is respectively meshed with the first bevel gear (65) and the third bevel gear (69); the other end of the first rotating shaft (64) is fixedly connected to the first bevel gear (65); the other end of the second bevel gear (67) is fixedly connected to the second rotating shaft (66); the other end of the third bevel gear (69) is fixedly connected to the third rotating shaft (68).

2. The anaerobic sewage treatment system according to claim 1, characterized in that: The plurality of water spray pipes (39) are combined into a circle to spray anaerobic water. A second water pump (37) is provided on the lower side of the anaerobic tank (1). The output end of the second water pump (37) is connected to the water spray pipe (39). The input end of the second water pump (37) is fixedly connected to a third water supply pipe (38).

3. An anaerobic sewage treatment system according to claim 2, characterized in that: The other end of the third water supply pipe (38) is fixedly connected to a three-way valve (36), the other end of the three-way valve (36) is fixedly connected to a second water stop valve (35), and the upper end of the three-way valve (36) is fixedly connected to the first water stop valve (34).

4. The anaerobic sewage treatment system according to claim 3, characterized in that: The second water supply pipe (33) is fixedly connected to the other end of the first water stop valve (34); a first water pump (32) is fixedly connected to the outside of the anaerobic tank (1); an output end of the first water pump (32) is fixedly connected to the other end of the second water supply pipe (33); an input end of the first water pump (32) is fixedly connected to the first water supply pipe (31); and the other end of the first water supply pipe (31) passes through the anaerobic tank (1) and is fixedly connected to the anaerobic tank (1).

5. The anaerobic sewage treatment system according to claim 1, characterized in that: The stirring mechanism (8) comprises a second fixed cylinder (81) fixedly connected to the other end of the second rotating shaft (66); a power box (84) is fixedly connected inside the second fixed cylinder (81); a motor (83) is fixedly connected to the upper side of the power box (84); and four fourth bevel gears (85) are connected to the internal uniform bearing of the motor (83).

6. The anaerobic sewage treatment system according to claim 5, characterized in that: The other end of each of the fourth bevel gears (85) is fixedly connected to a fan blade (82), and each of the fourth bevel gears (85) is meshedly connected to each other. The upper sides of the four fourth bevel gears (85) are meshedly connected to a fifth bevel gear (86), and the other end of the fifth bevel gear (86) passes through the upper wall of the power box (84) and is fixedly connected to the output end of the motor (83).

7. The anaerobic sewage treatment system according to claim 1, characterized in that: The area detection mechanism (7) comprises a second connecting rod (75) fixedly connected to the other end of the third rotating shaft (68); the other end of the second connecting rod (75) is hingedly connected to the first connecting rod (74); a guide slide bar (72) is provided on one side of the first connecting rod (74); and the guide slide bar (72) is fixedly connected to the inner wall of the anaerobic tank (1).

8. The anaerobic sewage treatment system according to claim 7, characterized in that: The other end of the first connecting rod (74) is hingedly connected to a sliding block (71), one side of the sliding block (71) is fixedly connected to a sludge concentration sensor (73), a sliding groove is provided inside the guide slide bar (72), and the sliding block (71) is slidably connected to the sliding groove.

9. The anaerobic sewage treatment system according to claim 8, characterized in that: A plurality of first tooth columns (713) are evenly arranged inside the slide groove, and two seventh bevel gears (715) and a sixth bevel gear (712) are respectively connected to the interior of the slide block (71) by bearings.

10. The anaerobic sewage treatment system according to claim 9, characterized in that: The other ends of the two seventh bevel gears (715) are respectively fixedly connected to an upper fan (714) and a lower fan (716), and the other end of the sixth bevel gear (712) is fixedly connected to a column gear (711), and the column gear (711) is meshingly connected to the first tooth column (713).

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