Sulfur autotrophic denitrification nitrogen removal device

Abstract

The invention relates to the technical field of sewage treatment, in particular to a sulfur autotrophic denitrification nitrogen removal device which comprises a reaction tank, and a driving shaft is arranged on the reaction tank; a driving part is arranged at one end of the driving shaft, a cleaning hopper is fixedly connected to the driving shaft through bolts, and a stirring assembly is arranged at the end, away from the driving part, of the driving shaft; a connecting column is fixedly connected to the end, away from the driving part, of the driving shaft, a sliding groove is formed in the connecting column and is in an annular wave shape, and the multiple stirring assemblies are distributed at the connecting column in a circumferential array mode. The device has the advantages that when the device is used, the filter material between the splitter plate and the blocking net can be shifted, so that the situation that the surface of the filter material forms a coating due to microbial metabolites, suspended matter deposition in water and the like during long-term operation or the filter material is compacted and hardened due to non-uniform local water flow is avoided, the contact and mass transfer efficiency of sewage and microorganisms on the filter material is improved, and the service life of the filter material is prolonged. Therefore, the condition that the filter material needs to be replaced after shutdown due to serious hardening of the filter material is avoided, and the treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sulfur autotrophic denitrification and denitrification device. Background Art

[0002] Sulfur autotrophic denitrification process is a biological denitrification technology that uses sulfur-oxidizing bacteria, such as Thiobacillus, to reduce nitrate or nitrite in water to nitrogen gas using inorganic sulfur as an electron donor.

[0003] In this process, sulfur-oxidizing bacteria obtain energy by oxidizing inorganic sulfur, and use nitrogen-containing compounds such as nitrate as electron acceptors to carry out denitrification reactions. No additional organic carbon source is required. It is suitable for denitrification treatment of wastewater with a low carbon-nitrogen ratio and has the characteristics of low operating costs and low sludge production.

[0004] A sewage treatment device for sulfur autotrophic denitrification and denitrification disclosed in Chinese patent CN219689536U can effectively reduce blockage in the sewage treatment process.

[0005] However, by comparing the existing technology and the comparative scheme, it can be seen that the sulfur autotrophic denitrification and denitrification sewage treatment device still has the following problems when actually used compared with the existing technology:

[0006] Filter media is a core component of sulfur-autotrophic denitrification units, serving as both a carrier for microorganisms and an electron donor. Over long-term operation, the filter media surface may form a coating due to microbial metabolites and the deposition of suspended solids in the water. Alternatively, uneven local water flow may cause the filter media to compact and harden, hindering contact between wastewater and microorganisms and hindering mass transfer efficiency. Severe hardening may even require shutdown and filter media replacement, reducing treatment efficiency. Summary of the Invention

[0007] The object of the present invention is to solve at least one of the technical drawbacks.

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a sulfur autotrophic denitrification device.

[0009] The object of the present invention is achieved through the following technical solutions: A sulfur autotrophic denitrification device comprises a reaction tank, on which a drive shaft is provided;

[0010] A driving member is provided at one end of the driving shaft, a cleaning bucket is fixedly connected to the driving shaft by bolts, and a toggle assembly is provided at the end of the driving shaft away from the driving member;

[0011] One end of the drive shaft away from the drive member is fixedly connected to a connecting column, on which a slide groove is provided. The shape of the slide groove is annular and wavy. There are multiple toggle assemblies, which are distributed in a circular array on the connecting column.

[0012] The toggle assembly includes a connecting rod, one end of which is sleeved with a sleeve, and the end of the connecting rod away from the sleeve is hinged to a first connecting seat, and a roller is rotatably connected to the first connecting seat, and the roller is arranged inside the slide groove. The rollers on adjacent toggle assemblies are respectively arranged at the crests and troughs of the annular wavy slide groove.

[0013] Preferably, a water inlet pipe is fixedly connected to the bottom of the reaction tank, a water outlet pipe, an air outlet pipe and a feeding port are provided on the reaction tank, a sealing cover is provided at the feeding port on the reaction tank, a diverter plate is provided at the bottom inside the reaction tank, a block net is provided at the top inside the reaction tank, the sealing cover is provided between the diverter plate and the block net, and a connecting block is fixedly connected to the inside of the reaction tank.

[0014] Preferably, a connecting plate is fixedly connected to one side of the cleaning bucket, the connecting plate is fixedly connected to the drive shaft, a cleaning net is provided inside the cleaning bucket, and a connecting rib is fixedly connected to the cleaning bucket.

[0015] Preferably, the driving member is fixedly mounted on the top of the reaction tank.

[0016] Preferably, there are multiple cleaning buckets, which are distributed in a circular array on the drive shaft.

[0017] Preferably, one end of the sleeve away from the connecting rod is hinged to the connecting block.

[0018] Preferably, a second connecting seat is provided on the diverter plate at a position corresponding to the connecting column, a connecting groove is provided on the second connecting seat, the first connecting seat is slidably connected to the inside of the connecting groove, and the connecting column is rotatably connected to the inside of the second connecting seat.

[0019] Compared with the existing technology, it has the following advantages:

[0020] When in use, the sulfur autotrophic denitrification and denitrification device can move the filter material between the diverter plate and the screen to avoid the formation of a film on the filter material surface due to microbial metabolites, suspended matter deposition in the water, etc. during long-term operation, or the compaction and hardening of the filter material due to uneven local water flow. This improves the contact and mass transfer efficiency between the sewage and the microorganisms on the filter material, thereby avoiding the situation where the filter material is severely hardened and needs to be shut down to replace the filter material, thereby improving the treatment efficiency.

[0021] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic cross-sectional view of the present invention;

[0024] Figure 3Schematic diagram of the cross-sectional structure of the reaction tank of the present invention;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of the structure at point A in the middle;

[0026] Figure 5 This is a schematic structural diagram of the drive shaft of the present invention;

[0027] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0028] Figure 7 Schematic diagram of the structure of the drive shaft of the present invention;

[0029] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at C in the middle;

[0030] Figure 9 It is a structural schematic diagram of the cleaning bucket of the present invention;

[0031] Figure 10 It is a structural schematic diagram of the toggle assembly of the present invention.

[0032] In the figure: 1. reaction tank; 101. water inlet pipe; 102. water outlet pipe; 103. air outlet pipe; 104. sealing cover; 105. diverter plate; 106. screen; 107. connecting block; 108. second connecting seat; 109. connecting groove; 2. drive shaft; 201. connecting column; 202. slide groove; 21. driving member; 22. cleaning bucket; 221. connecting plate; 222. cleaning net; 223. connecting rib; 23. toggle assembly; 231. connecting rod; 232. sleeve; 233. first connecting seat; 234. roller. DETAILED DESCRIPTION

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] Additional aspects and advantages of the present invention will be further given in the following description in conjunction with the accompanying drawings, and in part will become apparent from the following description, or may be learned through practice of the present invention.

[0036] like Figures 1 to 2 As shown, a sulfur autotrophic denitrification and denitrification device includes a reaction tank 1, a drive shaft 2 is provided on the reaction tank 1, and a backwash device for backwashing filter media is also provided in the reaction tank 1. The structure and working principle of the backwash device are the same as those in the prior art or can be implemented using the prior art. The backwash device is not shown in the figure;

[0037] like Figures 3 and 4 As shown, a water inlet pipe 101 is fixedly connected to the bottom of the reaction tank 1, a water outlet pipe 102, an air outlet pipe 103 and a feeding port are provided on the reaction tank 1, a sealing cover 104 is provided at the feeding port on the reaction tank 1, a diverter plate 105 is provided at the bottom of the reaction tank 1, a screen 106 is provided at the top of the reaction tank 1, the sealing cover 104 is provided between the diverter plate 105 and the screen 106, and a connecting block 107 is fixedly connected to the inside of the reaction tank 1;

[0038] like Figures 5 and 6 As shown, a driving member 21 is provided at one end of the driving shaft 2, and the driving member 21 is fixedly mounted on the top of the reaction tank 1. A cleaning bucket 22 is fixedly connected to the driving shaft 2 by bolts. The number of cleaning buckets 22 is multiple and distributed in a circular array on the driving shaft 2. A toggle assembly 23 is provided at the end of the driving shaft 2 away from the driving member 21;

[0039] like Figures 7 and 8 As shown, the end of the drive shaft 2 away from the driving member 21 is fixedly connected to the connecting column 201, and a slide groove 202 is opened on the connecting column 201. The shape of the slide groove 202 is annular and wavy. There are multiple toggle components 23, which are distributed in a circular array at the connecting column 201;

[0040] like Figure 5 and Figure 9As shown, a connecting plate 221 is fixedly connected to one side of the cleaning bucket 22, and the connecting plate 221 is fixedly connected to the drive shaft 2 by bolts. A cleaning net 222 is provided inside the cleaning bucket 22, and a connecting rib 223 is fixedly connected to the cleaning bucket 22;

[0041] like Figure 2 、 Figures 4 to 6 、 Figure 10 As shown, the toggle assembly 23 includes a connecting rod 231, a sleeve 232, a first connecting seat 233 and a roller 234. One end of the connecting rod 231 is sleeved with a sleeve 232, and the end of the sleeve 232 away from the connecting rod 231 is hinged on the connecting block 107. The end of the connecting rod 231 away from the sleeve 232 is hinged with the first connecting seat 233. A second connecting seat 108 is provided at a position corresponding to the connecting column 201 on the diverter plate 105. The second connecting seat 108 is provided with a connecting groove 109. The first connecting seat 233 is slidably connected to the inside of the connecting groove 109. The connecting column 201 is rotatably connected to the inside of the second connecting seat 108. The first connecting seat 233 is rotatably connected to the roller 234. The roller 234 is arranged inside the slide groove 202. The rollers 234 on adjacent toggle assemblies 23 are respectively arranged at the crests and troughs of the annular wavy slide groove 202.

[0042] The working process is as follows:

[0043] S1. Before use, open the sealing cover 104 and add the filter material into the reaction tank 1 from the feeding port. The filter material falls between the diverter plate 105 and the screen 106.

[0044] S2. When in use, sewage enters the reaction tank 1 from the water inlet pipe 101, passes through the diverter plate 105 and enters the filter material, where it contacts and reacts with the filter material, and then passes through the screen 106 and is discharged from the water outlet pipe 102. The gas generated by the reaction is discharged from the gas outlet pipe 103.

[0045] S3, start the driving member 21, which drives the cleaning bucket 22 to rotate through the driving shaft 2, and collects the sediment generated by the reaction in the water passing through the intercepting net 106;

[0046] S4. At the same time, the driving shaft 2 drives the connecting column 201 to rotate, the roller 234 slides in the sliding groove 202, and the first connecting seat 233 slides inside the connecting groove 109;

[0047] S5 drives the connecting rod 231 and the sleeve 232 on the adjacent toggle assembly 23 to swing up and down alternately, to toggle the filter material between the diverter plate 105 and the blocking net 106, to avoid the formation of a film on the filter material surface due to microbial metabolites, suspended matter deposition in the water, etc. during long-term operation, or the compaction and hardening of the filter material due to uneven local water flow, thereby improving the contact and mass transfer efficiency between the sewage and the microorganisms on the filter material, thereby avoiding the situation where the filter material is severely hardened and needs to be shut down to replace the filter material, thereby improving the treatment efficiency.

[0048] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A sulfur autotrophic denitrification device, characterized in that: It comprises a reaction tank (1), wherein a drive shaft (2) is provided on the reaction tank (1); A driving member (21) is provided at one end of the driving shaft (2), a cleaning bucket (22) is fixedly connected to the driving shaft (2) by means of bolts, and a toggle assembly (23) is provided at one end of the driving shaft (2) away from the driving member (21); One end of the drive shaft (2) away from the drive member (21) is fixedly connected to a connecting column (201), a sliding groove (202) is provided on the connecting column (201), and the shape of the sliding groove (202) is an annular wave shape. The number of the toggle components (23) is plural and the circumferential array is distributed on the connecting column (201); The toggle assembly (23) comprises a connecting rod (231), one end of the connecting rod (231) is sleeved with a sleeve (232), one end of the connecting rod (231) away from the sleeve (232) is hinged with a first connecting seat (233), a roller (234) is rotatably connected to the first connecting seat (233), and the roller (234) is arranged inside the slide groove (202), and the rollers (234) on adjacent toggle assemblies (23) are respectively arranged at the crest and trough of the annular wave-shaped slide groove (202).

2. A sulfur autotrophic denitrification and denitrification device according to claim 1, characterized in that: The bottom of the reaction tank (1) is fixedly connected to a water inlet pipe (101); the reaction tank (1) is provided with a water outlet pipe (102), an air outlet pipe (103) and a feeding port; a sealing cover (104) is provided at the feeding port on the reaction tank (1); a diverter plate (105) is provided at the bottom of the reaction tank (1); a blocking net (106) is provided at the top of the reaction tank (1); the sealing cover (104) is provided between the diverter plate (105) and the blocking net (106); and a connecting block (107) is fixedly connected to the inside of the reaction tank (1).

3. A sulfur autotrophic denitrification and denitrification device according to claim 1, characterized in that: A connecting plate (221) is fixedly connected to one side of the cleaning bucket (22), and the connecting plate (221) is fixedly connected to the driving shaft (2). A cleaning net (222) is provided inside the cleaning bucket (22), and a connecting rib (223) is fixedly connected to the cleaning bucket (22).

4. A sulfur autotrophic denitrification and denitrification device according to claim 1, characterized in that: The driving member (21) is fixedly mounted on the top of the reaction tank (1).

5. The sulfur autotrophic denitrification and denitrification device according to claim 1, characterized in that: The number of the cleaning buckets (22) is multiple and distributed in a circular array on the driving shaft (2).

6. A sulfur autotrophic denitrification and denitrification device according to claim 2, characterized in that: One end of the sleeve (232) away from the connecting rod (231) is hinged to the connecting block (107).

7. A sulfur autotrophic denitrification and denitrification device according to claim 2, characterized in that: A second connecting seat (108) is provided on the diverter plate (105) at a position corresponding to the connecting column (201), a connecting groove (109) is provided on the second connecting seat (108), the first connecting seat (233) is slidably connected to the inside of the connecting groove (109), and the connecting column (201) is rotatably connected to the inside of the second connecting seat (108).

Images