Anaerobic reaction tank

Abstract

The utility model relates to the technical field of anaerobic reaction tanks, and discloses an anaerobic reaction tank which comprises an anaerobic tank body, a liquid inlet pipe is connected to a conical shell, the other end of the liquid inlet pipe extends out of the anaerobic tank body, a stirring assembly capable of uniformly distributing inlet liquid is rotatably connected to the conical shell, a plurality of liquid discharge pipes are connected to the circumferential direction of the conical shell, and the liquid discharge pipes are connected to the conical shell. A scattering assembly capable of scattering sludge in inlet liquid is connected to the liquid discharge pipe, a plurality of barrier plates are connected to the first reaction area and the second reaction area, the barrier plates are of inverted V-shaped structures, gaps are formed between the adjacent barrier plates, the inner tops of the barrier plates are communicated with the gas-liquid separation area through exhaust structures, and the gas-liquid separation area is communicated with the gas-liquid separation area through a gas outlet structure. And the top of the gas-liquid separation area is connected with an exhaust pipe. Compared with the prior art, the sewage treatment device has the advantages that the stirring assembly can be conveniently self-driven to realize uniform stirring and mixing, organic pollutants in sewage can be conveniently pre-dispersed, the contact area with sludge particles can be conveniently increased, and the conversion rate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to anaerobic reaction tank technical field, specifically point to a kind of anaerobic reaction tank. BACKGROUND

[0002] Anaerobic reaction tank is mainly combined with sludge particles in tank and organic pollutants in wastewater, converted into biogas for recycling, and wastewater can be recycled after multiple operation treatments.

[0003] And the existing anaerobic reaction tank is mostly provided with stirring assembly in tank, wastewater and sludge particles are stirred uniformly, but external power is needed to drive stirring assembly, in addition, as sewage is introduced into mixing area, organic pollutants in sewage accumulate, although it can be assisted to scatter by stirring assembly, mixed more uniformly after scattering, but this process can be realized only after a certain time operation of stirring rod, and part of pollutants continue to be introduced with sewage without dispersion, which reduces contact area and conversion rate of organic pollutants. SUMMARY

[0004] The technical problem to be solved by the utility model is that wastewater needs external power to drive stirring assembly, part of pollutants continue to be introduced with sewage without dispersion, which reduces conversion rate of organic pollutants.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows: an anaerobic reaction tank, comprising an anaerobic tank body, the anaerobic tank body comprises a mixing area, a first reaction area, a second reaction area and a gas-liquid separation area from bottom to top, a conical shell is connected in the mixing area, a liquid inlet pipe is connected on the conical shell, the other end of the liquid inlet pipe extends out of the anaerobic tank body, a stirring assembly for uniform distribution of liquid inlet is rotatably connected on the conical shell, a plurality of liquid outlet pipes are connected around the conical shell, a scattering assembly for scattering sludge in liquid inlet is connected on the liquid outlet pipe, a plurality of baffle plates are connected in the first reaction area and the second reaction area, the baffle plates are all inverted V-shaped structures, gaps are arranged between adjacent baffle plates, the top of the baffle plate is communicated with the gas-liquid separation area through an exhaust structure, an exhaust pipe is connected at the top of the gas-liquid separation area, a liquid return pipe is connected at the bottom of the gas-liquid separation area, the other end of the liquid return pipe is communicated with the second reaction area, and a water outlet pipe is connected at the top of the second reaction area.

[0006] Further, the stirring assembly comprises a rotating shaft rotatably connected to the middle part of the conical shell, a plurality of driving plates are circumferentially connected to the bottom end of the rotating shaft, a plurality of stirring rods are circumferentially connected to the top end of the rotating shaft and extend into the mixing area, the driving plates drive the stirring rods to rotate through the rotating shaft, and the wastewater in the mixing area is continuously stirred so that the organic pollutants in the wastewater are uniformly mixed with the sludge particles and fully contacted, so that the conversion rate of the organic pollutants is improved.

[0007] Further, the liquid inlet pipe is arranged to be not in line with the center of the rotating shaft, and the input end of the liquid inlet pipe is arranged opposite to the driving plate, so that the wastewater is continuously introduced into the conical shell through the liquid inlet pipe to impact and strike the driving plate, so as to provide power.

[0008] Further, the liquid outlet pipe comprises a reduced diameter section in the middle part, and expansion sections are connected to the two ends of the reduced diameter section, respectively, and one side of the expansion section is sealingly connected with the conical shell in penetration, so that the liquid outlet pipe is based on the structural principle of a Venturi pipe, and negative pressure can be realized in the reduced diameter section.

[0009] Further, the scattering assembly comprises a ring pipe connected to the mixing area, a gas return pipe is connected to the ring pipe, the other end of the gas return pipe is communicated with the top of the gas-liquid separation area, a plurality of connecting pipes are connected to the ring pipe, and the other end of the connecting pipe is connected to the reduced diameter section, so that the biogas at the top of the gas-liquid separation area is introduced into the gas return pipe under the action of negative pressure, and then introduced into the reduced diameter section through the ring pipe and the connecting pipe, so that the wastewater is sprayed, the contact area between the organic pollutants and the sludge particles in the wastewater is increased, and the conversion efficiency is improved.

[0010] Further, the exhaust structure comprises a merging pipe located at the top of the first reaction area and the top of the second reaction area, a plurality of branch pipes are connected to the merging pipe, the bottom end of the branch pipe extends to the inside of the top of the baffle and penetrates the inside of the top of the baffle, the top end of the merging pipe extends to the gas-liquid separation area and is connected with an inverted U-shaped pipe at the end, the biogas is accumulated in the inside of the baffle under the diversion of the V-shaped structure of the baffle, is collected into the merging pipe through the branch pipe, and is introduced into the gas-liquid separation area through the U-shaped pipe, so that the power of liquid carried in the biogas is further reduced, and the separation of the biogas is assisted.

[0011] The advantages of the utility model compared with prior art are:

[0012] The wastewater is introduced into the conical shell through the liquid inlet pipe, the stirring assembly can be self-driven, and then the wastewater and sludge particles in the mixing area can be stirred to promote uniform distribution; the wastewater is introduced into the mixing area through the liquid inlet pipe on the conical shell, the scattering assembly can scatter the wastewater, further assisting to increase the contact area of the wastewater and the sludge particles, and the first reaction area and the second reaction area can degrade the organic pollution in the wastewater, so that the organic pollution is converted into biogas, the biogas is blocked by the blocking plate, and then accumulated on the inside of the top of the blocking plate, the accumulated biogas is introduced into the gas-liquid separation area through the exhaust structure for separation, and the biogas is discharged through the exhaust pipe, and the treated water is discharged through the drain pipe. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of an anaerobic reaction tank.

[0014] Figure 2 is a main sectional structure schematic diagram of an anaerobic reaction tank.

[0015] Figure 3 is Figure 2 is an enlarged structure schematic diagram of A in the figure.

[0016] Figure 4 is a side sectional structure schematic diagram of an anaerobic reaction tank.

[0017] As shown in the figure: 1, anaerobic tank body, 2, conical shell, 3, liquid inlet pipe, 4, liquid outlet pipe, 5, blocking plate, 6, exhaust pipe, 7, liquid return pipe, 8, drain pipe, 9, rotating shaft, 10, driving plate, 11, stirring rod, 12, ring pipe, 13, reduced diameter section, 14, expansion section, 15, gas return pipe, 16, connecting pipe, 17, merging pipe, 18, branch pipe, 19, U-shaped pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application; based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. EMBODIMENT

[0019] Combined with the drawings Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model provides an anaerobic reaction jar, including anaerobic jar body 1, anaerobic jar body 1 includes mixing area, first reaction area, second reaction area and gas-liquid separation area from bottom to top, be connected with the cone shell 2 in mixing area, be connected with the liquid inlet pipe 3 on the cone shell 2, the other end of liquid inlet pipe 3 extends out of anaerobic jar body 1 setting, be connected with the stirring assembly that can be evenly distributed to the liquid inlet of rotation on the cone shell 2, the stirring assembly includes the rotating shaft 9 that is connected in the middle part of cone shell 2, the center of liquid inlet pipe 3 is not collinear with rotating shaft 9 setting, the bottom end of rotating shaft 9 is connected with a plurality of driving plate 10 periphery, the input end of liquid inlet pipe 3 is opposite with driving plate 10 setting, the top end of rotating shaft 9 extends to mixing area and is connected with a plurality of stirring rod 11 periphery in the end part,

[0020] Through the cooperation of the above-mentioned structure of the stirring assembly, the wastewater and sludge particles are uniformly stirred, so as to improve the conversion efficiency of organic pollutants.

[0021] Combined with the accompanying Figure 2 And Figure 4 The first reaction area and the second reaction area are both connected with a plurality of baffle plates 5, the top of the baffle plate 5 is communicated with the gas-liquid separation area through the exhaust structure, the exhaust structure includes a merging pipe 17 located at the top of the first reaction area and the second reaction area, a plurality of branch pipes 18 are connected to the merging pipe 17, the bottom end of the branch pipe 18 extends to the top inside of the bottom baffle plate 5 and penetrates the top inside of the baffle plate 5, the merging pipe 17 is a T-shaped structure and extends to the gas-liquid separation area at the top end and is connected with an inverted U-shaped pipe 19 at the end, the baffle plate 5 is an inverted V-shaped structure, a gap is provided between adjacent baffle plates 5, an exhaust pipe 6 is connected to the top of the gas-liquid separation area, a liquid return pipe 7 is connected to the bottom of the gas-liquid separation area, the other end of the liquid return pipe 7 is communicated with the second reaction area, and a drain pipe 8 is connected to the top of the second reaction area.

[0022] Through the cooperation of the above-mentioned structure of the baffle plate 5, the exhaust pipe 6, the liquid return pipe 7, the exhaust structure and the drain pipe 8, the biogas generated by the conversion of organic pollutants is introduced into the gas-liquid separation area, and then the biogas is separated and discharged, and the treated water is discharged through the drain pipe, thereby facilitating continuous treatment of wastewater. Embodiment

[0023] Based on the embodiment one, combined with the accompanying Figure 3, the conical shell 2 is connected with a plurality of liquid discharge pipes 4, the liquid discharge pipes 4 are connected with scattering assemblies which can scatter sludge in the liquid, the liquid discharge pipes 4 comprise a middle reduced diameter section 13, the two ends of the reduced diameter section 13 are connected with expansion sections 14 respectively, one side of the expansion section 14 is connected with the conical shell 2 in a penetrating sealing manner, the scattering assemblies comprise a ring pipe 12 connected with the mixing area, the ring pipe 12 is connected with a gas return pipe 15, the other end of the gas return pipe 15 is communicated with the top of the gas-liquid separation area, the ring pipe 12 is connected with a plurality of connecting pipes 16, the other end of the connecting pipes 16 is connected with the reduced diameter section 13;

[0024] The scattering assemblies in the above structure can facilitate the ejection of the wastewater, facilitate the scattering and introduction of the wastewater into the mixing area, and improve the contact area of the sludge particles and the organic pollutants in the wastewater.

[0025] The specific use method is as follows:

[0026] The wastewater is introduced into the conical shell 2 through the liquid inlet pipe 3, the stirring assembly can be self-driven, and then the sludge particles and the wastewater in the mixing area can be stirred to promote the uniform distribution, the liquid inlet pipe 3 is not coaxial with the center of the rotating shaft 9, the wastewater is continuously introduced into the conical shell 2 through the liquid inlet pipe 3 to impact the driving plate 10, the driving plate 10 drives the stirring rod 11 to rotate through the rotating shaft 9, the wastewater in the mixing area is continuously stirred, the organic pollutants in the wastewater are mixed and uniformly distributed with the sludge particles, and the contact is sufficient, so that the conversion rate of the organic pollutants is improved.

[0027] The wastewater is introduced into the mixing area through the liquid inlet pipe 3 on the conical shell 2, the liquid discharge pipe 4 is based on the structure principle of the Venturi pipe, the negative pressure is realized in the reduced diameter section 13, the biogas at the top of the gas-liquid separation area is introduced into the gas return pipe 15 under the action of the negative pressure, and then introduced into the reduced diameter section 13 through the ring pipe 12 and the connecting pipe 16, so that the wastewater is ejected, the wastewater is further scattered, the contact area of the organic pollutants in the wastewater and the sludge particles is improved, and the conversion efficiency is improved.

[0028] The first reaction area and the second reaction area can degrade the organic pollutants in the wastewater, so that the organic pollutants are converted into biogas, the accumulated biogas can be introduced into the gas-liquid separation area through the exhaust structure for separation, the biogas bubbles are blocked and collected by the blocking plate 5 under the guide of the V-shaped structure of the blocking plate 5, and then accumulated on the inner side of the blocking plate 5, the small bubbles are collected into large bubbles, and then collected into the merging pipe 17 through the branch pipe 18, and then introduced into the gas-liquid separation area through the U-shaped pipe 19, the setting of the U-shaped pipe 19 can further reduce the power of the liquid in the biogas, and can assist the separation of the biogas, the liquid in the biogas is collected at the bottom of the gas-liquid separation area, and then introduced back to the bottom of the second reaction area through the liquid return pipe 7, and the biogas is discharged through the exhaust pipe 6, and the treated water is discharged through the drain pipe 8.

[0029] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0030] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the following claims and their equivalents.

[0031] The above description of the present application and its embodiments has been described, which is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the creative purpose of the present application, without creative design, similar structure and embodiments of the technical scheme should belong to the protection scope of the present application.

Claims

1. An anaerobic reaction tank, comprising an anaerobic tank body (1) which comprises a mixing zone, a first reaction zone, a second reaction zone and a gas-liquid separation zone from bottom to top, characterized in that: a conical shell (2) is connected in the mixing zone, an inlet pipe (3) is connected on the conical shell (2), the other end of the inlet pipe (3) extends out of the anaerobic tank body (1), a stirring assembly for uniform distribution of inlet liquid is rotatably connected on the conical shell (2); a plurality of liquid discharge pipes (4) are connected circumferentially on the conical shell (2), a scattering assembly for scattering sludge in the inlet liquid is connected on the liquid discharge pipes (4); a plurality of baffle plates (5) are connected in the first reaction zone and the second reaction zone, the baffle plates (5) are all inverted V-shaped structures, gaps are provided between adjacent baffle plates (5), the baffle plates (5) are communicated with the gas-liquid separation zone through gas discharge structures at the top, a gas discharge pipe (6) is connected at the top of the gas-liquid separation zone, a liquid return pipe (7) is connected at the bottom of the gas-liquid separation zone, the other end of the liquid return pipe (7) is communicated with the second reaction zone, and a water discharge pipe (8) is connected at the top of the second reaction zone.

2. An anaerobic reactor according to claim 1, characterized in that: The stirring assembly comprises a rotating shaft (9) rotatably connected to the middle of the conical shell (2), a plurality of driving plates (10) are circumferentially connected at the bottom end of the rotating shaft (9), and a plurality of stirring rods (11) are circumferentially connected at the end of the rotating shaft (9) extending into the mixing zone.

3. An anaerobic reactor according to claim 2, characterized in that: The inlet pipe (3) is not coaxial with the center of the rotating shaft (9), and the input end of the inlet pipe (3) is arranged opposite to the driving plate (10).

4. The anaerobic reactor tank according to claim 1, characterized in that: The liquid discharge pipe (4) comprises a reduced diameter section (13) in the middle, expansion sections (14) are connected at both ends of the reduced diameter section (13), and one side of the expansion section (14) is sealingly connected through the conical shell (2).

5. An anaerobic reactor according to claim 4, characterized in that: The scattering assembly comprises a ring pipe (12) connected to the mixing zone, a gas return pipe (15) is connected on the ring pipe (12), the other end of the gas return pipe (15) is communicated with the top of the gas-liquid separation zone, a plurality of connecting pipes (16) are connected on the ring pipe (12), and the other end of the connecting pipe (16) is connected to the reduced diameter section (13).

6. An anaerobic reactor according to claim 1, characterized in that: The gas discharge structure comprises a merging pipe (17) at the top of the first reaction zone and the top of the second reaction zone, a plurality of branch pipes (18) are connected on the merging pipe (17), the bottom end of the branch pipe (18) extends to the inside of the top of the baffle plate (5) and penetrates the inside of the top of the baffle plate (5), and the top end of the merging pipe (17) extends to the gas-liquid separation zone and is connected with an inverted U-shaped pipe (19) at the end.

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