A multi-stage treatment device for high-concentration organic wastewater

Abstract

The present invention discloses a multi-stage treatment device for high-concentration organic wastewater, which belongs to the technical field of light-irradiated wastewater treatment, and comprises a shell, wherein a rotating shaft is rotatably connected to the shell through a sealed bearing, a first spiral blade is fixedly connected to the rotating shaft, and an ultraviolet emitting element is fixedly connected to the lower surface of the upper wall of the shell; a liquid storage tank is provided above the shell, and the liquid storage tank is connected to the shell; a gas tank is provided on the lower side of the shell, and the gas tank is connected to the shell. The design of the rotating shaft and the first spiral blade of the invention not only improves the mixing efficiency of the chemical agent in the wastewater, but also enables the agent to be quickly and evenly dispersed into the wastewater, thereby improving the treatment effect; at the same time, the rotation of the spiral blade can also drive the wastewater to form an upward and downward flow, so that the organic matter in the wastewater can be more fully in contact with the chemical agent and dissolved oxygen, further improving the treatment efficiency. In combination with the ultraviolet emitting element, the wastewater can be fully sterilized.

Description

Technical Field

[0001] The invention belongs to the technical field of light-irradiated wastewater treatment, and in particular relates to a multi-stage treatment device for high-concentration organic wastewater. Background Art

[0002] The main purpose of high-concentration organic wastewater treatment is to remove harmful substances in the wastewater so that it meets the discharge standards or can be reused. The main processes of high-concentration organic wastewater treatment include:

[0003] Pretreatment: For high-concentration organic wastewater containing a large amount of oil and suspended solids, oil separation is first performed to remove floating oil. Subsequently, the flotation method is used to adhere the oil droplets and suspended particles in the wastewater through microbubbles, so that they float to the water surface for easy separation. Coagulants such as polyaluminium chloride and polyacrylamide are added to the wastewater to make the colloidal particles in the wastewater aggregate with each other and form large floccules, which are then separated from the wastewater by precipitation or flotation. Then, by catalytic oxidation or redox, the macromolecular substances in the wastewater are decomposed into small molecular substances, the biodegradability of the wastewater is improved, and the toxicity of the wastewater is reduced, thereby improving the treatment efficiency of subsequent biochemical treatment.

[0004] Biochemical treatment: For high-concentration organic wastewater with poor biodegradability, anaerobic biological treatment technology is preferred, such as upflow anaerobic sludge blanket (UASB). Under anaerobic conditions, complex organic matter in the wastewater is converted into biogas and biological sludge through the action of anaerobic microorganisms. The wastewater after anaerobic treatment is further treated with aerobic biological treatment, such as activated sludge method, biofilm method, etc. Under aerobic conditions, aerobic microorganisms are used to degrade organic matter in the wastewater and convert it into harmless substances.

[0005] Deep treatment: Utilize the powerful adsorption performance of activated carbon to adsorb residual organic matter in wastewater, further improving the degree of wastewater purification.

[0006] Disinfection and reuse: In order to ensure the biological safety of wastewater after treatment, disinfection is usually carried out to kill harmful microorganisms such as bacteria and viruses in the wastewater.

[0007] Among them, for the disinfection process, ultraviolet disinfection is a physical disinfection method that uses the radiation ability of ultraviolet rays to destroy the DNA molecules of bacteria and viruses, thereby preventing their reproduction and spread. In the wastewater treatment process, ultraviolet disinfection can effectively kill bacteria, viruses and other harmful microorganisms in the wastewater, ensuring that the treated water meets the biosafety standards.

[0008] However, the main defect of ultraviolet sterilization is that the sterilization effect is uneven when treating wastewater. Specifically, when treating wastewater, ultraviolet sterilization technology can show a good sterilization effect on the upper part of the wastewater, which can effectively kill bacteria and reduce microbial contamination. However, when treating the lower part of the wastewater, its sterilization effect will drop significantly, resulting in the bacterial contamination level of the lower wastewater is still high. This uneven sterilization effect is mainly caused by the limited penetration ability of ultraviolet rays in wastewater. As ultraviolet rays spread in the wastewater, their intensity will gradually weaken, resulting in a decrease in the sterilization ability of the lower wastewater. Summary of the invention

[0009] In view of the problems existing in the prior art, the present invention provides a multi-stage treatment device for high-concentration organic wastewater, which has the advantage of improving the sterilization effect and solves the problems of the prior art.

[0010] The present invention is achieved in this way. A multi-stage treatment device for high-concentration organic wastewater includes a shell, a rotating shaft is rotatably connected to the shell through a sealed bearing, a first spiral blade is fixedly connected to the rotating shaft, and an ultraviolet emitting element is fixedly connected to the lower surface of the upper wall of the shell; a liquid storage tank is provided above the shell, the liquid storage tank is connected to the shell, and a gas tank is provided on the lower side of the shell, and the gas tank is connected to the shell.

[0011] As a preferred embodiment of the present invention, a channel is opened in the rotating shaft, and a plurality of first through holes are provided on the rotating shaft, and the plurality of first through holes are equidistantly arranged along the axial direction of the rotating shaft, and the first through holes are connected to the channel; the upper end of the rotating shaft extends into the liquid storage tank, and the rotating shaft and the lower wall of the liquid storage tank are connected by a sealing bearing; a sealing member is provided at the upper end of the channel, and the sealing member can block the upper end of the channel.

[0012] As a preferred embodiment of the present invention, a plurality of second through holes are provided on the rotating shaft, and the plurality of second through holes are equidistantly arranged along the axial direction of the rotating shaft, and the second through holes are connected to the channel; the first spiral blade includes an upper sub-blade and a lower sub-blade; the pitch of the upper sub-blade and the lower sub-blade are equal; there is a gap between the upper sub-blade and the lower sub-blade, and the gap is connected to the channel through the second through hole; a third through hole is provided on the upper sub-blade; and a fourth through hole is provided on the lower sub-blade.

[0013] As a preferred embodiment of the present invention, the blocking member includes: a limit block, an insertion rod and a second spiral blade; the limit block is fixedly connected to the upper opening part of the channel; the insertion rod is slidably inserted into the upper end of the channel and fits into the limit block, and a notch is provided on the insertion rod; the second spiral blade is fixedly connected to the insertion rod.

[0014] As a preferred embodiment of the present invention, the multi-stage treatment device for high-concentration organic wastewater includes a plurality of shells, and the plurality of shells are arranged in an array; a first gear is fixedly connected to the plurality of rotating shafts, and the first gear is located between the liquid storage tank and the shell; a first motor is fixedly connected to the lower side of the liquid storage tank, and the output shaft of the first motor is fixedly connected to a second gear, the second gear is meshed with a ring gear, and the ring gear is meshed with the first gear.

[0015] As a preferred embodiment of the present invention, the gas tank includes: a gas tank body and a gas turntable; the gas tank body is fixedly connected to the bottom of the shell; the gas turntable is connected to the gas tank body through a pipeline, and a valve is provided on the pipeline, the gas turntable is installed on the upper surface of the bottom wall of the shell, and a plurality of first gas injection holes are opened on the upper surface of the gas turntable, and the first gas injection holes are located directly below the first spiral blade, and a plurality of second gas injection holes are provided on the side wall of the gas turntable; the lower edge of the first spiral blade is attached to the upper surface of the gas turntable.

[0016] As a preferred embodiment of the present invention, the lower end of the channel is connected to the gas turntable.

[0017] As a preferred embodiment of the present invention, a plurality of the shells are provided with a ring on the outside, the inner ring of the ring and the outer side wall of the shell are at least partially fitted together, the fitting parts of the ring and the shell are both provided with a first water inlet and a first water outlet, and the first water inlet is located on the upper side of the first water outlet; the outer ring of the ring is fitted with a swivel, the inside of the swivel is provided with a water inlet cavity, the inner ring of the swivel is provided with a second water inlet connected to the water inlet cavity, and the second water inlet can be aligned with the first water inlet; the inner ring of the swivel is provided with a drainage cavity, the inner ring of the swivel is provided with a second water outlet connected to the drainage cavity, and the second water outlet is a transversely arranged strip-shaped opening; the water inlet cavity is connected to an external water supply hose, and the drainage cavity is connected to an external drainage hose.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The ultraviolet emitting element can treat the flowing wastewater with ultraviolet light. Ultraviolet light has a strong bactericidal and disinfecting effect, which can effectively kill bacteria and viruses in the wastewater and ensure the safety of the treated water. The rotating shaft can drive the first spiral blade to rotate, thereby improving the mixing efficiency of the chemical agent on the one hand, and on the other hand, it can make the wastewater flow in the up and down directions, so that the ultraviolet light can treat the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a multi-stage treatment device for high-concentration organic wastewater provided by an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the main structure of a multi-stage treatment device for high-concentration organic wastewater provided by an embodiment of the present invention;

[0022] Figure 3 The embodiment of the present invention provides Figure 2 Schematic diagram of the cross-sectional structure of the AA part;

[0023] Figure 4 The embodiment of the present invention provides Figure 3 A schematic diagram of the enlarged structure of part B;

[0024] Figure 5 The embodiment of the present invention provides Figure 3 A schematic diagram of the enlarged structure of the middle C part;

[0025] Figure 6 The embodiment of the present invention provides Figure 3 A schematic diagram of the enlarged structure of the D part;

[0026] Figure 7 It is a side view structural schematic diagram of a multi-stage treatment device for high-concentration organic wastewater provided by an embodiment of the present invention;

[0027] Figure 8 The embodiment of the present invention provides Figure 7 Schematic diagram of the cross-sectional structure of the EE part;

[0028] Fig. 9 The embodiment of the present invention provides Figure 8 A schematic diagram of the enlarged structure of the F part;

[0029] Fig.10 It is a schematic diagram of the structure in which the swivel and the sleeve ring are separated according to an embodiment of the present invention.

[0030] In the figure: 1. shell; 2. rotating shaft; 3. first spiral blade; 31. upper sub-blade; 32. lower sub-blade; 4. ultraviolet emitting element; 5. liquid storage tank; 6. gas tank; 61. gas tank body; 62. gas turntable; 63. pipeline; 64. first air injection hole; 65. second air injection hole; 7. channel; 8. first through hole; 9. blocking member; 91. limit block; 92. plugging rod; 93. second spiral blade; 94. notch; 10. second through hole; 11. third through hole; 12. fourth through hole; 13. first gear; 14. first motor; 15. second gear; 16. gear ring; 17. collar; 18. first water inlet; 19. first water outlet; 20. swivel; 21. water inlet cavity; 22. second water inlet; 23. drainage cavity; 24. second water outlet. DETAILED DESCRIPTION

[0031] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0032] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0033] See also Figure 1-Figure 10 A multi-stage treatment device for high-concentration organic wastewater provided by an embodiment of the present invention is specifically a device for disinfecting wastewater, comprising a shell 1, a rotating shaft 2 is rotatably connected to the shell 1 through a sealed bearing, a first spiral blade 3 is fixedly connected to the rotating shaft 2, and an ultraviolet emitting element 4 is fixedly connected to the lower surface of the upper wall of the shell 1; a liquid storage tank 5 is provided above the shell 1, and the liquid storage tank 5 is connected to the shell 1, and a gas tank 6 is provided on the lower side of the shell 1, and the gas tank 6 is connected to the shell 1.

[0034] The above solution integrates multiple treatment methods and can efficiently treat high-concentration organic wastewater.

[0035] First, the ultraviolet emitting element 4 in the device can treat the flowing wastewater with ultraviolet light. Ultraviolet light has a strong bactericidal and disinfecting effect, which can effectively kill bacteria and viruses in the wastewater and ensure the safety of the treated water.

[0036] Secondly, the liquid storage tank 5 provided in the device is used to inject chemical agents into the housing 1. The addition of chemical agents helps to sterilize bacteria in the wastewater.

[0037] The gas tank 6 can inject air or ozone into the housing 1, which can be selected according to the needs:

[0038] The effects of injecting air are as follows: it can promote the mixing and circulation of water flow, and help ensure that ultraviolet rays can evenly irradiate all parts of the wastewater. Microorganisms in wastewater are unevenly distributed, and the bubbles formed by injecting air can disturb the water flow, so that the components in the wastewater are better mixed, thereby improving the uniformity and effect of ultraviolet disinfection. This function can be used in conjunction with the first spiral blade 3, or it can be used alone.

[0039] The effects of injecting ozone are as follows: Ozone (O3) is a commonly used gas disinfectant. Ozone gas has strong oxidizing properties and can quickly kill bacteria, viruses and other microorganisms in wastewater. When ozone comes into contact with wastewater, it can destroy the cell walls of microorganisms and then destroy their internal structure, thereby achieving the purpose of disinfection. In addition, ozone can also oxidize organic matter in wastewater and improve water quality. Introducing ozone during ultraviolet disinfection can further enhance the disinfection effect. The combined effect of ultraviolet rays and ozone can kill microorganisms in wastewater more comprehensively and improve disinfection efficiency. At the same time, ozone can also help remove odor and color in wastewater and improve the overall quality of wastewater.

[0040] Finally, the design of the rotating shaft 2 and the first spiral blade 3 in the device not only improves the mixing efficiency of the chemical agent in the wastewater, allowing the agent to be quickly and evenly dispersed into the wastewater, thereby improving the treatment effect; at the same time, the rotation of the spiral blade can also drive the wastewater to flow in the up and down directions, and cooperate with the ultraviolet light emitting element 4 to comprehensively sterilize the wastewater.

[0041] In summary, this device achieves efficient sterilization of high-concentration organic wastewater by integrating chemical treatment, ozone sterilization and ultraviolet treatment. This device is not only compact in structure and easy to operate, but also has good treatment effect and wide application range, which is of great significance for environmental protection and wastewater treatment.

[0042] Among them, the ultraviolet emitting element 4 can be designed as an ultraviolet lamp or an ultraviolet LED lamp. Taking the ultraviolet lamp as an example, it is ensured that the wastewater can be fully exposed to the ultraviolet light it emits. The ultraviolet energy emitted by the ultraviolet lamp is sufficient to destroy the microbial cell structure in the wastewater, thereby achieving the purpose of sterilization and disinfection. This design can effectively kill harmful bacteria and viruses in the wastewater and improve the water quality safety of the effluent. Another option is an ultraviolet LED lamp. Compared with traditional ultraviolet lamps, ultraviolet LED lamps have higher energy efficiency and longer service life. They can start quickly and reach a stable working state, while generating relatively less heat, which helps to reduce the energy consumption and maintenance costs of the device. Ultraviolet LED lamps can also emit ultraviolet rays of sufficient intensity to effectively kill microorganisms in wastewater.

[0043] Among them, for the chemical agents used in the multi-stage treatment device for high-concentration organic wastewater, the following types can be selected as needed:

[0044] 1. Chlorine (Cl2): It is one of the most traditional disinfectants, which can effectively kill bacteria and viruses in water and maintain the disinfection effect for a long time. It can be added directly or generated by electrolyzing salt water to produce sodium hypochlorite.

[0045] 2. Sodium hypochlorite (NaClO): It has good stability and is often used for disinfection of drinking water and sewage treatment plants.

[0046] 3. Chlorine dioxide (ClO2): It is highly efficient and has good oxidative decomposition ability for certain organic matter. It is widely used in the sterilization and disinfection of tap water and circulating cooling water systems.

[0047] 4. Quaternary ammonium salts: such as hexadecyltrimethylammonium bromide, are broad-spectrum and highly effective fungicides, often used as slow-release biocides in industrial circulating cooling water systems.

[0048] The rotating shaft 2 can drive the first spiral blade 3 to rotate, thereby improving the mixing efficiency of the chemical agents on the one hand, and making the wastewater flow in an up-and-down direction on the other hand, so that the ultraviolet rays can treat the wastewater.

[0049] Furthermore, a channel 7 is opened in the rotating shaft 2, and a plurality of first through holes 8 are provided on the rotating shaft 2, and the plurality of first through holes 8 are equidistantly arranged along the axial direction of the rotating shaft 2, and the first through holes 8 are connected to the channel 7; the upper end of the rotating shaft 2 extends into the liquid storage tank 5, and the rotating shaft 2 and the lower wall of the liquid storage tank 5 are connected through a sealing bearing; a blocking member 9 is provided at the upper end of the channel 7, and the blocking member 9 can block the upper end of the channel 7.

[0050] Since the plurality of first through holes 8 are distributed axially along the rotating shaft 2, different first through holes 8 are distributed at different depths of the shell 1. When the liquid in the liquid storage tank 5 passes through the channel 7 and is injected into the shell 1 from the first through holes 8, it can be injected to different depths, thereby facilitating the improvement of the dispersion speed of the chemical agent in the wastewater.

[0051] Furthermore, the rotating shaft 2 is provided with a plurality of second through holes 10, and the plurality of second through holes 10 are equidistantly arranged along the axial direction of the rotating shaft 2, and the second through holes 10 are connected to the channel 7; the first spiral blade 3 includes an upper sub-blade 31 and a lower sub-blade 32; the pitch of the upper sub-blade 31 and the lower sub-blade 32 are equal; there is a gap between the upper sub-blade 31 and the lower sub-blade 32, and the gap is connected to the channel 7 through the second through hole 10; the upper sub-blade 31 is provided with a third through hole 11; the lower sub-blade 32 is provided with a fourth through hole 12.

[0052] With this arrangement, the liquid in the channel 7 can not only be injected into the shell 1 through the first through hole 8, but also enter the gap through the second through hole 10, and then be injected into the area of ​​the first spiral blade 3 through the third through hole 11 and the fourth through hole 12. At this time, the chemical agent is more evenly distributed.

[0053] Furthermore, the blocking member 9 includes: a limit block 91, an insert rod 92 and a second spiral blade 93; the limit block 91 is fixedly connected to the upper opening portion of the channel 7;

[0054] The insert rod 92 is slidably inserted into the upper end of the channel 7 and fits the limit block 91 . A notch 94 is provided on the insert rod 92 . The second spiral blade 93 is fixedly connected to the insert rod 92 .

[0055] This setting has the following effects:

[0056] First, when the rotating shaft 2 rotates to one side and the speed exceeds the preset rotation speed, the liquid in the liquid storage tank 5 can push the second spiral blade 93 and the insertion rod 92 to move upward, so that the notch 94 moves to the top of the channel 7, so that the liquid can enter the channel 7 through the notch 94; when the rotating shaft 2 rotates below the preset rotation speed or reverses, the second spiral blade 93 moves downward under the action of gravity, so that the insertion rod 92 blocks the upper end of the channel 7, achieving a blocking effect;

[0057] Secondly, the second spiral blade 93 can stir the liquid in the liquid storage tank 5 when rotating, thereby preventing the chemical agent from settling, and achieving the effect of injecting the chemical agent while stirring.

[0058] It should be noted that the insertion rod 92 should be prevented from escaping from the channel 7 during use. For example, the top cover of the liquid storage tank 5 is located at a preset distance from the upper end of the second spiral blade 93, thereby limiting the upward movement distance of the second spiral blade 93 and the insertion rod 92.

[0059] Furthermore, the multi-stage treatment device for high-concentration organic wastewater includes a plurality of housings 1, and the plurality of housings 1 are arranged in an array; a plurality of rotating shafts 2 are fixedly connected with a first gear 13, and the first gear 13 is located between the liquid storage tank 5 and the housing 1; a first motor 14 is fixedly connected to the lower side of the liquid storage tank 5, and a second gear 15 is fixedly connected to the output shaft of the first motor 14, and the second gear 15 is meshed with a gear ring 16, and the gear ring 16 is meshed with the first gear 13. Through this arrangement, the first motor 14 can drive all rotating shafts 2 to rotate simultaneously through the second gear 15, the gear ring 16, and the first gear 13, and then operations such as forward rotation, reverse rotation, stop, acceleration and deceleration can be realized.

[0060] Furthermore, the gas tank 6 includes: a gas tank body 61 and a gas turntable 62; the gas tank body 61 is fixedly connected to the bottom of the shell 1; the gas turntable 62 is connected to the gas tank body 61 through a pipe 63, and a valve is provided on the pipe 63, the gas turntable 62 is installed on the upper surface of the bottom wall of the shell 1, and a plurality of first gas injection holes 64 are opened on the upper surface of the gas turntable 62, and the first gas injection holes 64 are located directly below the first spiral blade 3, and a plurality of second gas injection holes 65 are provided on the side wall of the gas turntable 62; the lower edge of the first spiral blade 3 is attached to the upper surface of the gas turntable 62.

[0061] This setting has the following effects:

[0062] The gas injection holes in the prior art are evenly distributed, but impurities in the wastewater can easily enter the gas injection holes. In this solution, the lower edge of the first spiral blade 3 can clean the impurities on the upper side of the gas turntable 62 by scraping, preventing the impurities from entering the first gas injection holes 64. Since the second gas injection holes 65 are located on the side wall of the gas turntable 62, impurities are not easy to enter the second gas injection holes 65.

[0063] It should be noted that, although the arrangement of the first gas injection holes 64 is uneven, the first spiral blades 3 can stir the wastewater, so the gas can still be dispersed into the wastewater.

[0064] Furthermore, the lower end of the channel 7 is connected to the gas turntable 62. In the prior art, bubbles can rise under the action of buoyancy, but due to the first spiral blade 3, the first spiral blade 3 will block the area between the bubbles. However, through this setting, the gas in the gas turntable 62 can not only be injected into the wastewater through the first gas injection hole 64 and the second gas injection hole 65, but also can pass through the channel 7, the first through hole 8, the second through hole 10, and enter between the spiral blades, thereby improving the gas circulation effect.

[0065] Furthermore, a plurality of the shells 1 are provided with a collar 17 on the outside, the inner ring of the collar 17 is at least partially fitted with the outer wall of the shell 1, the fitting parts of the collar 17 and the shell 1 are provided with a first water inlet 18 and a first water outlet 19, and the first water inlet 18 is located on the upper side of the first water outlet 19; the outer ring of the collar 17 is fitted with a swivel 20, the inside of the swivel 20 is provided with a water inlet cavity 21, the inner ring of the swivel 20 is provided with a second water inlet 22 connected with the water inlet cavity 21, and the second water inlet 22 can be aligned with the first water inlet 18; the inner ring of the swivel 20 is provided with a drainage cavity 23, the inner ring of the swivel 20 is provided with a second water outlet 24 connected with the drainage cavity 23, and the second water outlet 24 is a transversely arranged strip-shaped opening; the water inlet cavity 21 is connected to an external water supply hose, and the drainage cavity 23 is connected to an external drainage hose.

[0066] When in use, the rotating ring 20 can be driven to rotate by a driving member (such as a gear ring driving structure), and when the second water inlet 22 is aligned with the first water inlet 18, the waste water in the water inlet chamber 21 can be injected into the housing 1. When the second water outlet 24 is aligned with the first water outlet 19, the treated waste water in the housing 1 can be discharged through the drainage chamber 23.

[0067] In the prior art, if the second water inlet 22 is aligned with the first water inlet 18, and the second water outlet 24 is also aligned with the first water outlet 19, water injection and drainage will occur simultaneously. At this time, the untreated wastewater will be mixed with the treated wastewater and discharged at the same time, resulting in substandard treatment effect.

[0068] If water is injected into one shell 1 and water is drained from the other shell 1 at the same time, there is no waste water in the shell 1 after the water is drained, but the injection of chemicals and gases is still in progress, thus causing a waste of resources.

[0069] With the present arrangement, the second water outlet 24 is a transversely arranged strip-shaped opening. When the second water inlet 22 and the first water inlet 18 are not aligned, the second water outlet 24 is first aligned with the first water outlet 19, at which time water can be discharged without affecting the rotation of the swivel 20. When the second water inlet 22 and the first water inlet 18 are rotated to be aligned, drainage is completed, and the second water outlet 24 is first offset from the first water outlet 19, at which time water intake operation can be performed.

[0070] Preferably, the second water inlet 22 is also configured as a transversely arranged strip-shaped opening, so that waste water can be injected into the housing 1 without stopping the rotation of the rotating ring 20.

[0071] Working principle of the present invention:

[0072] When in use, the rotating shaft 2 is rotatably connected to the housing 1 through a sealed bearing, ensuring the stability and sealing of the rotation. The first spiral blade 3 is fixedly connected to the rotating shaft 2 and rotates with the rotation of the rotating shaft 2. This design not only improves the mixing efficiency of the chemical agent in the wastewater, so that the agent can be quickly and evenly dispersed into the wastewater, thereby improving the treatment effect; at the same time, the rotation of the first spiral blade 3 can also drive the wastewater to form an up-and-down flow. This flow helps the organic matter in the wastewater to contact with the chemical agent and dissolved oxygen more fully, thereby improving the decomposition and conversion efficiency of the organic matter. In addition, the up-and-down flow can also better disperse and suspend the suspended matter and sediment in the wastewater, preventing the occurrence of sedimentation and blockage.

[0073] Therefore, the design of the rotating shaft 2 and the first spiral blade 3 is an important part of the multi-stage treatment device for high-concentration organic wastewater. They work together to achieve efficient treatment of wastewater. This design not only improves the treatment efficiency, but also ensures the stability and reliability of the treatment process, making an important contribution to environmental protection and wastewater treatment.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage treatment device for high-concentration organic wastewater, comprising a housing (1), wherein an ultraviolet emitting element (4) is fixedly connected to the lower surface of the upper wall of the housing (1), characterized in that: A rotating shaft (2) is rotatably connected to the housing (1) via a sealed bearing, and a first spiral blade (3) is fixedly connected to the rotating shaft (2); A liquid storage tank (5) is provided above the shell (1), the liquid storage tank (5) is in communication with the shell (1), and a gas tank (6) is provided on the lower side of the shell (1), the gas tank (6) is in communication with the shell (1); The rotating shaft (2) is provided with a channel (7), the rotating shaft (2) is provided with a plurality of first through holes (8), the plurality of first through holes (8) are equidistantly arranged along the axial direction of the rotating shaft (2), and the first through holes (8) are in communication with the channel (7); The upper end of the rotating shaft (2) extends into the liquid storage tank (5), and the rotating shaft (2) and the lower wall of the liquid storage tank (5) are connected via a sealed bearing; A blocking member (9) is provided at the upper end of the channel (7), and the blocking member (9) can block the upper end of the channel (7); The rotating shaft (2) is provided with a plurality of second through holes (10), the plurality of second through holes (10) are equidistantly arranged along the axial direction of the rotating shaft (2), and the second through holes (10) are in communication with the channel (7); The first spiral blade (3) comprises an upper sub-blade (31) and a lower sub-blade (32); The pitches of the upper sub-blade (31) and the lower sub-blade (32) are equal; There is a gap between the upper sub-blade (31) and the lower sub-blade (32), and the gap is connected to the channel (7) through the second through hole (10); The upper sub-blade (31) is provided with a third through hole (11); The lower sub-blade (32) is provided with a fourth through hole (12); The blocking member (9) comprises: a limit block (91), an insertion rod (92) and a second spiral blade (93); The limit block (91) is fixedly connected to the upper opening portion of the channel (7); The insertion rod (92) is slidably inserted into the upper end of the channel (7) and fits the limit block (91); a notch (94) is provided on the insertion rod (92); The second spiral blade (93) is fixedly connected to the insertion rod (92).

2. A high-concentration organic wastewater multi-stage treatment device as claimed in claim 1, characterized in that: The high-concentration organic wastewater multi-stage treatment device comprises a plurality of shells (1), wherein the plurality of shells (1) are arranged in an array; A first gear (13) is fixedly connected to the plurality of rotating shafts (2), and the first gear (13) is located between the liquid storage tank (5) and the housing (1); A first motor (14) is fixedly connected to the lower side of the liquid storage tank (5); an output shaft of the first motor (14) is fixedly connected to a second gear (15); the second gear (15) is meshed with a ring gear (16); and the ring gear (16) is meshed with the first gear (13).

3. A high-concentration organic wastewater multi-stage treatment device as claimed in claim 1, characterized in that: The gas tank (6) comprises: a gas tank body (61) and a gas turntable (62); The gas tank body (61) is fixedly connected to the bottom of the shell (1); The gas rotating disk (62) is connected to the gas tank body (61) through a pipeline (63), and a valve is provided on the pipeline (63). The gas rotating disk (62) is installed on the upper surface of the bottom wall of the shell (1). A plurality of first gas injection holes (64) are provided on the upper surface of the gas rotating disk (62), and the first gas injection holes (64) are located directly below the first spiral blade (3). A plurality of second gas injection holes (65) are provided on the side wall of the gas rotating disk (62); The lower edge of the first spiral blade (3) is in contact with the upper surface of the gas rotating disk (62).

4. A high-concentration organic wastewater multi-stage treatment device as claimed in claim 3, characterized in that: The lower end of the channel (7) is connected to the gas turntable (62).

5. A high-concentration organic wastewater multi-stage treatment device as claimed in claim 1, characterized in that: A plurality of collars (17) are provided on the outside of the shells (1), the inner ring of the collar (17) and the outer wall of the shell (1) are at least partially in contact with each other, and the contacting parts of the collar (17) and the shell (1) are both provided with a first water inlet (18) and a first water outlet (19), and the first water inlet (18) is located above the first water outlet (19); The outer ring of the sleeve (17) is fitted with a rotating ring (20), a water inlet cavity (21) is provided inside the rotating ring (20), and the inner ring of the rotating ring (20) is provided with a second water inlet (22) connected to the water inlet cavity (21), and the second water inlet (22) can be aligned with the first water inlet (18); A drainage cavity (23) is provided inside the inner ring of the rotating ring (20), and a second water outlet (24) communicating with the drainage cavity (23) is provided inside the inner ring of the rotating ring (20), wherein the second water outlet (24) is a strip-shaped outlet arranged transversely; The water inlet chamber (21) is connected to an external water supply hose, and the drainage chamber (23) is connected to an external drainage hose.

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