Anaerobic microorganism reactor for treating high-concentration wastewater

Abstract

The utility model provides an anaerobic microorganism reactor for treating high-concentration wastewater, which comprises a reactor kettle body, a booster fan is arranged outside the reactor kettle body, and a submersible water impeller is arranged on the side wall of the reactor kettle body and close to the bottom of the reactor kettle body. Gas generated in the reactor kettle body is jetted to the bottom of the reactor kettle body from the top of the reactor kettle body through the booster fan, and then anaerobic microorganism sludge deposited at the bottom of the reactor kettle body is dispersed through the submersible water impeller mounted at the bottom of the reactor kettle body; the anaerobic microorganism sludge is stirred by utilizing the rising of the gas sprayed to the bottom of the reactor kettle body in the reactor kettle body, so that the local acidification of anaerobic microorganisms in the reactor kettle body can be avoided, the problems of poor stability, low efficiency and the like of the existing anaerobic microorganism reactor are solved, and the treatment of wastewater with higher concentration can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of environmental engineering technology, and in particular relates to an anaerobic microbial reactor for treating high-concentration wastewater. Background Technology

[0002] Currently, anaerobic microbial reactors are commonly used for treating high-concentration wastewater. Anaerobic microbial treatment of high-concentration wastewater primarily relies on the action of anaerobic microorganisms to decompose complex organic matter in the wastewater into substances such as methane and carbon dioxide. Common anaerobic microbial reactors include USAB (Upflow Anaerobic Sludge Bed Reactor), IC (Internal Circulation Anaerobic Reactor), EGSB (Anaerobic Granular Sludge Expanded Bed Reactor), and CSTR (Completely Mixed Anaerobic Reactor). These reactors achieve the goal of degrading COD in high-concentration wastewater through thorough contact between cultivated anaerobic microorganisms and the wastewater.

[0003] Existing anaerobic microbial reactors have the following drawbacks:

[0004] (1) Poor stability and low efficiency: Anaerobic microbial reactors mainly grow acid-producing bacteria and methanogens. There is sludge accumulation at the bottom of the anaerobic microbial reactor, which will cause local acidification. The growth of methanogens and acid-producing bacteria will be inhibited, and the efficiency of anaerobic microbial reactors in treating high-concentration wastewater COD will be reduced.

[0005] (2) High energy consumption: In order to maintain sufficient contact between anaerobic microorganisms and wastewater and to prevent anaerobic microorganisms from accumulating sludge at the bottom of the anaerobic microbial reactor, a hydraulic circulation system needs to be added outside the anaerobic microbial reactor. The mixed liquid in the upper part of the anaerobic microbial reactor is injected to the bottom of the anaerobic microbial reactor through a booster pump to prevent sludge accumulation at the bottom of the anaerobic microbial reactor and to maintain the upward flow velocity of the mixed liquid in the anaerobic microbial reactor, so that the anaerobic microorganisms are always in a suspended state in the reactor. The anaerobic microbial reactor has high energy consumption. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide an improved anaerobic microbial reactor for treating high-concentration wastewater.

[0007] To achieve the above objectives, the solution adopted by this utility model is as follows:

[0008] This invention provides an anaerobic microbial reactor for treating high-concentration wastewater, comprising a reactor vessel, a booster fan installed outside the reactor vessel, a first pipe installed at the inlet end of the booster fan, and a second pipe installed at the outlet end of the booster fan. The end of the first pipe leads to the top of the reactor vessel and communicates with the interior of the reactor vessel, while the end of the second pipe leads to the bottom of the reactor vessel, so as to spray the gas generated inside the reactor vessel from the top of the reactor vessel to the bottom of the reactor vessel through the booster fan; a submersible jet mixer is provided on the side wall of the reactor vessel near the bottom of the reactor vessel to disperse the anaerobic microbial sludge deposited at the bottom of the reactor vessel.

[0009] Preferably, the second pipe extends from one side wall of the bottom of the reactor vessel to a side wall near the opposite side wall.

[0010] Preferably, the submersible thruster is fixed on the other side wall of the reactor vessel, near the end of the second pipe located at the bottom of the reactor vessel.

[0011] Preferably, the submersible propeller includes a rotating impeller, a transmission rod, and a drive reduction gearbox housing internally equipped with a reduction gear and a drive device. The rotating impeller is connected to one end of the transmission rod and located inside the reactor vessel. The transmission rod is vertically fixed to the side wall of the reactor vessel. The drive reduction gearbox housing is connected to the other end of the transmission rod and located outside the reactor vessel. The reduction gear includes a gear shaft and a gear assembly. The transmission rod is meshed with the gear shaft through the gear assembly of the reduction gear. The drive device is connected to the gear shaft of the reduction gear and drives the gear shaft of the reduction gear to rotate.

[0012] Preferably, the rotating impeller of the submersible thruster has a rotational speed of 40-120 rpm and a diameter of 1100-2500 mm.

[0013] Preferably, a double-membrane gas holder is provided on the connection path of the first pipeline for buffering the gas generated from inside the reactor vessel.

[0014] Beneficial effects

[0015] The anaerobic microbial reactor for treating high-concentration wastewater provided by this utility model uses a booster fan to inject gas generated inside the reactor vessel from the top to the bottom of the reactor vessel. Then, a submersible jet mixer installed at the bottom of the reactor vessel disperses the anaerobic microbial sludge deposited at the bottom of the reactor vessel. The rising gas injected into the bottom of the reactor vessel agitates the anaerobic microbial sludge, thus avoiding localized acidification of the anaerobic microbial sludge inside the reactor vessel. This solves the problems of poor stability and low efficiency of existing anaerobic microbial reactors and enables the treatment of wastewater with higher concentrations. Attached Figure Description

[0016] Figure 1 This is a front sectional view of the anaerobic microbial reactor for treating high-concentration wastewater according to this utility model.

[0017] Figure 2 This is a top sectional view of the anaerobic microbial reactor for treating high-concentration wastewater according to this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Therefore, the following solutions are proposed:

[0025] See Figure 1 This utility model provides an anaerobic microbial reactor for treating high-concentration wastewater, including a reactor vessel 1, a booster fan 2 installed outside the reactor vessel 1, a first pipe 3 installed at the inlet end of the booster fan 2, and a second pipe 4 installed at the outlet end of the booster fan 2. The end of the first pipe 3 leads to the top of the reactor vessel 1 and communicates with the interior of the reactor vessel 1, and the end of the second pipe 4 leads to the bottom of the reactor vessel 1. Gas generated inside the reactor vessel 1 is injected from the top of the reactor vessel 1 to the bottom of the reactor vessel 1 through the booster fan 2.

[0026] According to the present invention, the second pipe 4 is configured to extend from one side wall of the bottom of the reactor vessel 1 to a side wall close to the opposite side wall.

[0027] According to the solution of this utility model, combined with Figure 2 A submersible propeller 5 is provided on the side wall of the reactor vessel 1, near the bottom of the reactor vessel 1.

[0028] According to the present invention, a booster fan 2 is used to spray the gas generated inside the reactor vessel 1 from the top of the reactor vessel 1 to the bottom of the reactor vessel 1. Then, a submersible jet mixer 5 installed at the bottom of the reactor vessel 1 disperses the anaerobic microbial sludge deposited at the bottom of the reactor vessel 1. The rising gas sprayed to the bottom of the reactor vessel 1 agitates the anaerobic microbial sludge. This avoids local acidification of the anaerobic microbial sludge inside the reactor vessel 1 and solves the problems of poor stability and low efficiency of existing anaerobic microbial reactors, enabling the treatment of wastewater with higher concentrations.

[0029] According to the present invention, by setting up a booster fan 2, the gas generated inside the reactor vessel 1 is injected from the top of the reactor vessel 1 to the bottom of the reactor vessel 1. Then, by using a submersible jet mixer 5 installed at the bottom of the reactor vessel 1, the anaerobic microbial sludge deposited at the bottom of the reactor vessel 1 is dispersed. The rising gas injected to the bottom of the reactor vessel 1 agitates the anaerobic microbial sludge, which also keeps the anaerobic microbial sludge in a suspended state, avoiding the deposition of anaerobic microbial sludge and solving the problem of high energy consumption in existing anaerobic microbial reactors.

[0030] According to the present invention, in order to further enhance the above-mentioned effects, the submersible thruster 5 is preferably disposed on the other side wall of the reactor vessel 1, near the end of the second pipe 4 located at the bottom of the reactor vessel 1.

[0031] According to the solution of this utility model, such as Figure 1 , Figure 2 As shown, the submersible propeller 5 can be a conventional product, including a rotating impeller 51, a transmission rod 52, and a drive reduction gearbox 53 with a reduction gear and a drive device installed inside. The rotating impeller 51 is connected to one end of the transmission rod 52 and is located inside the reactor vessel 1. The transmission rod 52 is vertically fixed to the side wall of the reactor vessel 1. The drive reduction gearbox 53 is connected to the other end of the transmission rod 52 and is located outside the reactor vessel 1. The reduction gear and drive device inside the drive reduction gearbox 53 adopt a conventional drive reduction gear configuration. For example, the reduction gear includes a gear shaft and a gear assembly. The transmission rod 52 is meshed with the gear shaft through the gear assembly of the reduction gear. The drive device is connected to the gear shaft of the reduction gear and drives the gear shaft of the reduction gear to rotate, thereby driving the rotation of the transmission rod 52 meshed with the gear shaft, and driving the rotation of the rotating impeller 51.

[0032] According to the present invention, compared with ordinary stirring devices, the submersible impeller 5 used in this invention has a lower rotation speed (e.g., 40-120 rpm) and a larger diameter (e.g., 1100-2500 mm) for the rotating impeller 51. Installed in the anaerobic microbial reactor, the submersible impeller 5, installed at the bottom of the reactor vessel 1, disperses the anaerobic microbial sludge deposited at the bottom of the reactor vessel 1. This results in a more uniform distribution of the stirred flow field, a lower and slower flow velocity of the dispersed anaerobic microbial sludge, and a larger range of stirring and dispersing action. Simultaneously, the low rotation speed and large diameter impeller design allow the submersible impeller 5 to not only stir but also propel the flow, generating greater driving force for the anaerobic microbial sludge deposited at the bottom of the reactor vessel 1, and preventing air from being incorporated into the anaerobic microbial sludge during stirring and dispersing.

[0033] The anaerobic microbial reactor for treating high-concentration wastewater provided by this utility model can have other configurations in the reactor body 1 that are conventional for anaerobic microbial reactors. For example, a double-membrane gas holder 6 can be installed on the connection path of the first pipeline 3 to buffer the gas generated inside the reactor body 1.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An anaerobic microbial reactor for treating high-concentration wastewater, characterized in that, The reactor vessel includes a reactor body, a booster fan installed outside the reactor body, a first pipe installed at the inlet end of the booster fan, and a second pipe installed at the outlet end of the booster fan. The end of the first pipe leads to the top of the reactor body and communicates with the interior of the reactor body, while the end of the second pipe leads to the bottom of the reactor body, so as to spray the gas generated inside the reactor body from the top of the reactor body to the bottom of the reactor body through the booster fan. A submersible jet mixer is installed on the side wall of the reactor body near the bottom of the reactor body to disperse the anaerobic microbial sludge deposited at the bottom of the reactor body.

2. The anaerobic microbial reactor for treating high-concentration wastewater according to claim 1, characterized in that, The second pipe extends from one side wall of the bottom of the reactor vessel to a side wall near the opposite side wall.

3. The anaerobic microbial reactor for treating high-concentration wastewater according to claim 2, characterized in that, The submersible thruster is fixed to the other side wall of the reactor vessel, near the end of the second pipe located at the bottom of the reactor vessel.

4. The anaerobic microbial reactor for treating high-concentration wastewater according to claim 1, characterized in that, The submersible propulsion device includes a rotating impeller, a transmission rod, and a drive reduction gearbox housing internally equipped with a reduction gear and a drive device. The rotating impeller is connected to one end of the transmission rod and located inside the reactor vessel. The transmission rod is vertically fixed to the side wall of the reactor vessel. The drive reduction gearbox housing is connected to the other end of the transmission rod and located outside the reactor vessel. The reduction gear includes a gear shaft and a gear assembly. The transmission rod is meshed with the gear shaft through the gear assembly of the reduction gear. The drive device is connected to the gear shaft of the reduction gear and drives the gear shaft of the reduction gear to rotate.

5. The anaerobic microbial reactor for treating high-concentration wastewater according to claim 4, characterized in that, The rotating impeller of the submersible thruster has a rotational speed of 40-120 rpm and a diameter of 1100-2500 mm.

6. The anaerobic microbial reactor for treating high-concentration wastewater according to claim 1, characterized in that, A double-membrane gas holder is provided on the connection path of the first pipeline to buffer the gas generated from inside the reactor vessel.

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