Efficient denitrification biochemical reactor equipment

Abstract

The utility model discloses efficient denitrification biochemical reactor equipment. The efficient denitrification biochemical reactor equipment comprises an outer shell, the main water inlet pipe penetrates through the outer shell and then is arranged in the outer shell, the main water inlet pipe is in sealed connection with the outer shell, and the outer shell is provided with a water outlet pipe; the denitrification device and the aeration device are both arranged in the outer shell, the aeration device is mounted at the bottom of the outer shell, the aeration device is used for aerating nitrogen-containing sewage in the outer shell, and the denitrification device is used for carrying out denitrification treatment on the sewage; wherein the denitrification device comprises a middle barrel, a limiting plate, an inner conical barrel and a three-phase separator, the middle barrel, the limiting plate, the inner conical barrel and the three-phase separator are all arranged in the outer shell, and the limiting plate is located at the uppermost part in the outer shell; the utility model aims to solve the problems of high use cost and tedious process caused by denitrification of a denitrification reactor for sewage treatment through a plurality of procedures and equipment in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an efficient denitrification biochemical reactor device. Background Technique

[0002] A large amount of industrial pollution emissions, domestic sewage emissions, agricultural chemical fertilizer losses, livestock and poultry breeding sewage emissions, aquaculture sewage emissions, etc. cause water body ammonia nitrogen pollution, trigger water body eutrophication, lead to a large number of deaths of aquatic organisms, cause ecological damage and huge economic losses: Developing efficient and economic ammonia nitrogen treatment technology has become an important topic in the field of environmental protection.

[0003] Current denitrification technologies mostly adopt traditional nitrification-denitrification processes. Ammonia nitrogen is successively converted into nitrogen through nitrification and denitrification and then degraded and removed. Its typical processes include multi-stage denitrification processes, pre-anoxic-aerobic biological denitrification processes, post-anoxic-aerobic biological denitrification processes, etc. Traditional denitrification processes require a large amount of aeration, alkalinity supplementation, and a large amount of organic carbon sources, with overly complex processes and high operating costs. The shortcut nitrification-anaerobic ammonium oxidation process is a new type of biological denitrification process and is the simplest denitrification pathway, with advantages such as no need for organic carbon sources, alkalinity savings, appropriate aeration, and low sludge production. The efficient denitrification bioreactor is the core equipment for realizing the shortcut nitrification-anaerobic ammonium oxidation process, and its configuration directly affects the efficiency and operating stability of the shortcut nitrification-anaerobic ammonium oxidation process.

[0004] The invention patent with the application number: CN202311579670.9 and the publication number: CN117430245A (hereinafter referred to as "Prior Art 1") discloses a system and method for maintaining efficient denitrification of sludge digestate using a membrane bioreactor, including a reduced sulfur dosing device, a raw water pipeline, a raw water tank, a sequencing batch reactor, an upflow anaerobic sludge bed reactor, and a third outlet pipe; the outlet of the raw water pipeline is connected to the inlet of the raw water tank, the outlet of the raw water tank is connected to the inlet at the bottom of the sequencing batch reactor, a membrane module, an aeration device, and a stirring device are provided in the sequencing batch reactor, the outlet of the membrane module is connected to the inlet at the bottom of the upflow anaerobic sludge bed reactor through a pumping pump, the outlet at the top of the upflow anaerobic sludge bed reactor is connected to the third outlet pipe, and the outlet of the reduced sulfur dosing device is connected to the upflow anaerobic sludge bed reactor.

[0005] The specification of the prior art 1 discloses a system and method for maintaining efficient denitrification of sludge digestion liquid by using a membrane bioreactor. When in use, an aeration device is arranged in the sequencing batch reactor, and the micro-aerobic environment in the reactor is controlled by aeration; through the interception effect of the membrane module, a high biomass is maintained in the sequencing batch reactor, which is beneficial to the efficient progress of the reaction; in the upflow anaerobic sludge bed reactor, sulfur autotrophic denitrification reaction is carried out to complete the deep removal of nitrogen. However, in actual application, each biochemical reaction zone and sedimentation zone are separated to form independent functional zones, resulting in cumbersome processes and excessive floor space when in use. Summary of the Utility Model

[0006] The utility model provides a high-efficiency denitrification biochemical reactor device, aiming to solve the problem that in the prior art, for the denitrification reactor of sewage treatment, several processes and devices are used for denitrification, resulting in high use cost and cumbersome processes.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A high-efficiency denitrification biochemical reactor device includes a housing, a total water inlet pipe, an aeration device and a denitrification device. The total water inlet pipe passes through the housing and is placed inside the housing. The total water inlet pipe is hermetically connected to the housing, and the housing is provided with a water outlet pipe; both the denitrification device and the aeration device are arranged inside the housing. The aeration device is installed at the bottom of the housing and is used for aerating the nitrogen-containing sewage inside the housing. The denitrification device is used for denitrifying the sewage.

[0009] Among them, the denitrification device includes a middle cylinder, a limiting plate, an inner conical barrel and a three-phase separator. The middle cylinder, the limiting plate, the inner conical barrel and the three-phase separator are all arranged inside the housing. The limiting plate is located at the uppermost part inside the housing and is used for limiting the liquid level. The side wall of the middle cylinder is connected to the limiting plate, and the upper end surface is connected to the housing; the inner conical barrel is located inside the middle cylinder and is connected to the total water inlet pipe. The inside of the inner conical barrel is a nitrogen oxidation zone, and the aeration device is located directly below the inner conical barrel; the three-phase separator is installed on the inner wall of the housing and is located between the middle cylinder and the inner conical barrel, and the three-phase separator is used for intercepting the generated gas.

[0010] Further, the aeration device is specifically a flexible aeration membrane sheet, and the flexible aeration membrane sheet is located directly below the inner conical barrel.

[0011] Further, the end of the total water inlet pipe is provided with a water inlet branch pipe. The water inlet branch pipe passes through the inner conical barrel and is placed inside the housing. The water inlet branch pipe is hermetically connected to the inner conical barrel.

[0012] Further, an inverted cone of an inner conical hopper is provided at the bottom of the inner conical barrel. The inverted cone of the inner conical hopper is fixedly connected to the inner conical barrel. The outer wall of the inverted cone of the inner conical barrel is used to guide the deposited sludge, and the inner wall of the inverted cone of the inner conical barrel is used to guide the variable flow in the nitrogen oxidation zone.

[0013] Further, an inverted cone hopper of the middle cylinder is provided below the middle cylinder. The inverted cone hopper of the middle cylinder is fixedly connected to the middle cylinder. The function of the inverted cone hopper of the middle cylinder is the same as that of the three-phase separator, and both are used to intercept the generated gas.

[0014] Further, a precipitation zone is formed between the inner wall of the middle cylinder and the outer shell. The precipitation zone is used to collect sludge.

[0015] Further, a sludge accumulation hopper plate is provided on the bottom surface inside the outer shell. The sludge accumulation hopper plate is used to guide the sludge collected in the precipitation zone to be deposited at the bottom for easy sludge reflux.

[0016] Further, an exhaust pipe is provided above the outer shell. The exhaust pipe is used to discharge the ammonia gas inside the outer shell.

[0017] Further, the taper of the inner conical barrel is 5° - 15°.

[0018] Further, the included angle between the three-phase separator and the inner surface of the outer shell is 40° - 60°.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model mainly includes an outer shell, a total water inlet pipe, an aeration device, and a denitrification device; during the actual use process, the staff injects the sewage containing nitrogen into the outer shell through the total water inlet pipe until the sewage inside the outer shell reaches the position of the limit plate and then stops injecting sewage. The water level of the sewage inside the outer shell is flush with the limit plate and has a certain distance from the top of the outer shell; at this time, the aeration device is turned on. After the aeration device is turned on, the sewage inside the outer cylinder is aerated. At this time, the sewage is in the inner conical barrel and overflows from the upper port of the inner conical barrel to the middle cylinder under negative pressure for nitrification reaction, thereby denitrifying the sewage. The sludge in the sewage settles, the residual ammonia gas in the sewage is intercepted by the three-phase separator, and the remaining ammonia gas is discharged from the exhaust port during the secondary aeration; the advantage of such a setting is that it integrates the denitrification zone, nitrogen oxidation zone, precipitation zone, and gas collection zone. There are no strict boundaries between the zones. By means of hydrodynamics and controlling parameters such as dissolved oxygen, functions such as short-cut nitrification and denitrification, and anaerobic ammonia oxidation are realized, shortening the purification process, having a simple structure, saving land, low energy consumption, efficient denitrification, stable operation, enabling batch production, further reducing the manufacturing cost, and saving the construction investment. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the present utility model.

[0023] Figure 2 It is a schematic diagram of the connection relationship between the inner conical barrel and the inverted cone of the inner conical hopper in the present utility model.

[0024] In the figure, 101 - outer housing, 102 - main inlet pipe, 103 - outlet pipe, 104 - middle cylinder, 105 - limiting plate, 106 - inner conical barrel, 107 - three-phase separator, 108 - nitrification area, 109 - flexible aeration membrane, 110 - inlet branch pipe, 111 - inverted cone of the inner conical hopper, 112 - inverted cone hopper of the middle cylinder, 113 - sedimentation area, 114 - sludge hopper plate, 115 - exhaust pipe. Specific embodiments

[0025] The following further describes the present utility model in combination with embodiments. The described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1 and Figure 2 As shown, this embodiment discloses a high-efficiency denitrification biochemical reactor device, including an outer housing 101, a main inlet pipe 102, an aeration device, and a denitrification device. The main inlet pipe 102 passes through the outer housing 101 and is placed inside the outer housing 101. The main inlet pipe 102 is hermetically connected to the outer housing 101, and the outer housing 101 is provided with an outlet pipe 103; both the denitrification device and the aeration device are arranged inside the outer housing 101. The aeration device is installed at the bottom of the outer housing 101 and is used to aerate the nitrogen-containing sewage inside the outer housing 101. The denitrification device is used to denitrify the sewage.

[0027] Among them, the denitrification device includes a middle cylinder body 104, a limiting plate 105, an inner conical barrel 106 and a three-phase separator 107. The middle cylinder body 104, the limiting plate 105, the inner conical barrel 106 and the three-phase separator 107 are all arranged inside the outer shell 101. The limiting plate 105 is located at the uppermost part inside the outer shell 101 and is used to limit the liquid level. The side wall of the middle cylinder body 104 is connected to the limiting plate 105, and the upper end surface is connected to the outer shell 101. The inner conical barrel 106 is located inside the middle cylinder body 104 and is connected to the total water inlet pipe 102. The inside of the inner conical barrel 106 is a nitrogen oxidation area 108, and the aeration device is located directly below the inner conical barrel 106. The three-phase separator 107 is installed on the inner wall of the outer shell 101 and is located between the middle cylinder body 104 and the inner conical barrel 106, and is used to intercept the generated gas.

[0028] The utility model mainly includes an outer shell 101, a total water inlet pipe 102, an aeration device and a denitrification device. During actual use, the staff passes the sewage containing nitrogen into the outer shell 101 from the total water inlet pipe 102 until the sewage inside the outer shell 101 reaches the position of the limiting plate 105, and then stops injecting sewage. The water level of the sewage inside the outer shell 101 is flush with the limiting plate 105 and has a certain distance from the top of the outer shell 101. At this time, the aeration device is turned on. After the aeration device is turned on, the sewage inside the outer cylinder body 104 is aerated. At this time, the sewage is in the inner conical barrel 106 and overflows from the upper port of the inner conical barrel 106 to the middle cylinder body 104 under negative pressure for nitrification reaction, thereby denitrifying the sewage. The sludge in the sewage settles, the residual ammonia gas in the sewage is intercepted by the three-phase separator 107, and the remaining ammonia gas is discharged from the exhaust port during secondary aeration. The advantage of such a setting is that it integrates a denitrification area, a nitrogen oxidation area 108, a sedimentation area 113, and a gas collection area. There are no strict boundaries between the areas. By means of hydrodynamics and controlling parameters such as dissolved oxygen, functions such as short-cut nitrification and denitrification, and anaerobic ammonium oxidation are realized, shortening the purification process, having a simple structure, saving land, low energy consumption, high-efficiency denitrification, stable operation, enabling batch production, further reducing the manufacturing cost, and saving the construction investment.

[0029] In some embodiments, the aeration device is specifically a flexible aeration membrane 109, and the flexible aeration membrane 109 is located directly below the inner conical barrel 106.

[0030] During actual use, the flexible aeration membrane 109 is a prior art. When in use, aeration is carried out through the flexible aeration membrane 109 to circulate the sewage in the inner conical barrel 106. It should be noted that this embodiment does not involve the improvement of the structure of the flexible aeration membrane 109, and will not be elaborated here one by one.

[0031] In some embodiments, an inlet branch pipe 110 is provided at the end of the main inlet pipe 102. The inlet branch pipe 110 passes through the inner conical barrel 106 and is placed inside the outer housing 101, and the inlet branch pipe 110 is sealingly connected to the inner conical barrel 106.

[0032] During actual use, the purpose of setting the inlet branch pipe 110 is to make the sewage enter the outer housing 101 more evenly.

[0033] In some embodiments, an inner conical hopper inverted cone 111 is provided at the bottom of the inner conical barrel 106. The inner conical hopper inverted cone 111 is fixedly connected to the inner conical barrel 106. The outer wall of the inverted cone of the inner conical barrel 106 is used to guide the deposited sludge, and the inner wall of the inverted cone of the inner conical barrel 106 is used to guide the variable flow in the nitrification zone 108.

[0034] In some embodiments, a middle cylinder inverted cone hopper 112 is provided below the middle cylinder 104. The middle cylinder inverted cone hopper 112 is fixedly connected to the middle cylinder 104. The function of the middle cylinder inverted cone hopper 112 is the same as that of the three-phase separator 107, and both are used to intercept the generated gas.

[0035] In some embodiments, a sedimentation zone 113 is formed between the inner wall of the middle cylinder 104 and the outer housing 101. The sedimentation zone 113 is used to collect sludge.

[0036] In some embodiments, a sludge accumulation hopper plate 114 is provided on the bottom surface inside the outer housing 101. The sludge accumulation hopper plate 114 is used to guide the sludge collected in the sedimentation zone 113 to be deposited at the bottom for easy sludge reflux.

[0037] In some embodiments, an exhaust pipe 115 is provided above the outer housing 101. The exhaust pipe 115 is used to discharge the ammonia gas inside the outer housing 101.

[0038] In some embodiments, the taper of the inner conical barrel 106 is 5° - 15°.

[0039] As an alternative embodiment, in this embodiment, the taper of the inner conical barrel 106 is 10°.

[0040] In some embodiments, the included angle between the three-phase separator 107 and the inner surface of the outer housing 101 is 40° - 60°.

[0041] As an alternative embodiment, in this embodiment, the included angle between the phase separator and the inner surface of the outer housing 101 is 30°.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model.

[0043] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0044] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency denitrification biochemical reactor device, comprising an outer shell (101) and a main water inlet pipe (102), wherein the main water inlet pipe (102) passes through the outer shell (101) and is placed inside the outer shell (101), the main water inlet pipe (102) is sealedly connected to the outer shell (101), and the outer shell (101) is provided with a water outlet pipe (103); characterized in that: It also includes an aeration device and a denitrification device, both of which are arranged inside the outer shell (101), the aeration device is installed at the bottom of the outer shell (101), the aeration device is used to aerate the nitrogen-containing sewage inside the outer shell (101), and the denitrification device is used to denitrify the sewage; The denitrification device comprises a middle cylinder (104), a limiting plate (105), an inner cone barrel (106) and a three-phase separator (107); the middle cylinder (104), the limiting plate (105), the inner cone barrel (106) and the three-phase separator (107) are all arranged in an outer shell (101); the limiting plate (105) is located at the top inside the outer shell (101); the limiting plate (105) is used to limit the liquid level; the side wall of the middle cylinder (104) is connected to the limiting plate (105); the upper end surface is connected to the outer shell (101); The outer shell (101) is connected to the inner cone barrel (106); the inner cone barrel (106) is located inside the middle cylinder (104), the inner cone barrel (106) is connected to the main water inlet pipe (102), the inner cone barrel (106) is a nitrogen oxidation zone (108), and the aeration device is located directly below the inner cone barrel (106); the three-phase separator (107) is installed on the inner wall of the outer shell (101), the three-phase separator (107) is located between the middle cylinder (104) and the inner cone barrel (106), and the three-phase separator (107) is used to intercept the generated gas.

2. The high-efficiency denitrification biochemical reactor equipment according to claim 1, characterized in that: The aeration device is specifically a flexible aeration membrane (109), and the flexible aeration membrane (109) is located directly below the inner cone barrel (106).

3. The high-efficiency denitrification biochemical reactor equipment according to claim 1 is characterized in that: A water inlet branch pipe (110) is provided at the end of the main water inlet pipe (102). The water inlet branch pipe (110) passes through the inner cone barrel (106) and is placed inside the outer shell (101). The water inlet branch pipe (110) is sealed and connected to the inner cone barrel (106).

4. The high-efficiency denitrification biochemical reactor equipment according to claim 1 is characterized in that: An inner cone bucket inverted cone (111) is arranged at the bottom of the inner cone barrel (106), and the inner cone bucket inverted cone (111) is fixedly connected to the inner cone barrel (106). The outer wall of the inverted cone of the inner cone barrel (106) is used to guide the deposited sludge, and the inner wall of the inverted cone of the inner cone barrel (106) is used to perform variable flow guidance on the nitrogen oxidation zone (108).

5. The high-efficiency denitrification biochemical reactor equipment according to claim 1 is characterized in that: A middle cylinder inverted cone bucket (112) is arranged below the middle cylinder body (104). The middle cylinder inverted cone bucket (112) is fixedly connected to the middle cylinder body (104). The function of the middle cylinder inverted cone bucket (112) is the same as that of the three-phase separator (107), and both are used to intercept the generated gas.

6. The high-efficiency denitrification biochemical reactor equipment according to claim 1 is characterized in that: A sedimentation area (113) is formed between the middle cylinder (104) and the inner wall of the outer shell (101), and the sedimentation area (113) is used to collect sludge.

7. The high-efficiency denitrification biochemical reactor equipment according to claim 6 is characterized in that: A mud hopper plate (114) is arranged on the bottom surface inside the outer shell (101), and the mud hopper plate (114) is used to guide the mud collected in the sedimentation area (113) to be deposited at the bottom to facilitate the sludge backflow.

8. The high-efficiency denitrification biochemical reactor equipment according to claim 1 is characterized in that: An exhaust pipe (115) is arranged above the outer shell (101), and the exhaust pipe (115) is used to discharge ammonia gas inside the outer shell (101).

9. The high-efficiency denitrification biochemical reactor equipment according to claim 1, characterized in that: The taper of the inner cone barrel (106) is 5°-15°.

10. The high-efficiency denitrification biochemical reactor equipment according to claim 1, characterized in that: The included angle between the three-phase separator (107) and the inner surface of the outer shell (101) is 40°-60°.

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