Novel aeration structure of biochemical pool

Abstract

The utility model discloses a novel aeration structure of a biochemical pool, which comprises a biochemical pool provided with an aerobic zone, an anoxic zone and an anaerobic zone. Furthermore, batten type microporous aerators are arranged at the bottom of the aerobic zone, and the aerators are distributed in the aerobic zone in a progressively decreasing manner, so that accurate regulation and control can be performed according to the oxygen demand of different zones of the aerobic zone; furthermore, a variable-speed vertical stirrer is arranged in the aerobic zone, the stirring speed of the stirrer is automatically adjusted according to the mixing requirement in the biochemical treatment process, and when enhanced denitrification is needed, aeration can be stopped, and only the stirrer is started; accurate regulation and control can be carried out according to the oxygen demand of different areas of the aerobic area, the aeration efficiency is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to a novel aeration structure for a biological treatment tank, belonging to the field of biological treatment tanks. Background Technology

[0002] With the rapid development of industrialization and urbanization, wastewater treatment has become a crucial aspect of environmental protection and sustainable development. Traditional biological treatment pond technology has limitations in improving wastewater treatment efficiency, reducing energy consumption, and minimizing environmental impact. Specifically, existing biological treatment pond technology suffers from the following problems: high energy consumption of the aeration system, high equipment failure rate, and impact on treatment effectiveness. Therefore, the transformation of biological treatment ponds and aeration systems is urgently needed. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a novel aeration structure for a biological treatment tank to solve the problem.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: an aeration structure for a novel biological treatment tank, wherein the biological treatment tank is provided with an aerobic zone, an anoxic zone, and an anaerobic zone.

[0005] Furthermore, a slatted microporous aerator is arranged at the bottom of the aerobic zone. The aerators are distributed in a decreasing manner within the aerobic zone to precisely control the oxygen demand according to the oxygen demand of different areas of the aerobic zone.

[0006] Furthermore, the aerobic zone is equipped with a variable-speed vertical stirrer. The stirrer automatically adjusts the stirring speed according to the mixing requirements in the biochemical treatment process. When enhanced denitrification is required, aeration can be stopped and only the stirrer can be activated.

[0007] The main pipe includes an inlet well, an inlet channel connected to the inlet well, an outlet weir, and an outlet channel connected to the outlet weir; the main pipe is located between the anaerobic zone and the aerobic zone, the inlet well is connected to the anaerobic zone, and the aerobic zone is connected to the outlet weir;

[0008] An aeration pipeline system is provided, which is evenly arranged along the bottom of the aerobic zone, and the aerators are connected to the aeration pipeline system by threaded connections.

[0009] Preferably, a partition wall is provided between the aerobic zone and the anoxic zone, and the partition wall is provided with through holes to allow water to flow freely between the aerobic zone and the anoxic zone.

[0010] Preferably, the aeration pipeline system is further provided with an exhaust valve for discharging residual gas in the pipeline when the aeration pipeline system stops operating.

[0011] Preferably, the aeration pipeline system is equipped with a flexible compensator at the connection point, which is further described as a metal corrugated pipe compensator.

[0012] Preferably, in the aerobic zone, the number of aerators facing the sewage inflow direction is more dense than that facing the sewage outflow direction, so as to achieve the aerator decreasing layout.

[0013] Preferably, the biological treatment tank is divided into at least one anaerobic zone, one anoxic zone, and four aerobic zones; the four aerobic zones can be further divided into two pre-zones and two post-zones; the aerators in the two pre-zones are arranged in a decreasing order, while the aerators in the two post-zones are regularly distributed and filled; the wastewater first passes through the two pre-zones and then to the two post-zones.

[0014] Preferably, a water pump pipe assembly is installed in the anaerobic zone to allow wastewater to flow from the anaerobic zone to the anoxic zone; the drainage direction of the water pump pipe assembly to the anoxic zone is designed diagonally to the drainage direction of the anoxic zone to the aerobic zone.

[0015] Preferably, the agitator is located in the front zone near the outlet of the anoxic zone; the front zone and the rear zone are also provided with partition walls and through holes, so that the front zone and the rear zone can be connected in series and the sewage can flow; wherein the through holes of the two front zones are both located on the tangent of the agitator's stirring direction.

[0016] Preferably, the through holes in adjacent front and rear regions are arranged diagonally.

[0017] Beneficial effects

[0018] This invention utilizes a progressively distributed plate-type microporous aerator at the bottom of the aerobic zone, which allows for precise control based on the oxygen demand of different areas within the aerobic zone, thereby improving aeration efficiency and reducing energy consumption.

[0019] By setting up a variable-speed vertical stirrer in the aerobic zone, the stirring speed is automatically adjusted according to the mixing requirements in the biochemical treatment process;

[0020] By rationally designing the layout of the main pipe, this invention can ensure that sewage is evenly distributed to each anaerobic zone, thereby improving the uniformity and stability of the biological treatment tank. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the aeration structure of a novel biochemical tank according to this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of a novel biochemical pool according to this utility model. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Please see Figure 1 , Figure 2 This utility model provides a novel aeration structure technical solution for a biological treatment tank: the size and layout of the biological treatment tank 1 can be customized according to actual treatment needs, but the reasonable division and series arrangement of the anaerobic zone 11, the anoxic zone 12 and the aerobic zone 13 should be ensured; for example, the biological treatment tank 1 can be divided into one anaerobic zone 11, anoxic zone 12 and aerobic zone 13, and divided into two groups for symmetrical design, each group including a certain number of anaerobic zones 11, anoxic zones 12 and aerobic zones 13, which are arranged in series in sequence;

[0026] Adjustable slat-type microporous aerators 2 with adjustable aeration orifice diameters are installed at the bottom of the aerobic zone 13. The aerators 2 are distributed in a decreasing pattern, with the number of aerators 2 facing the sewage inflow direction being more dense than that facing the sewage outflow direction in the aerobic zone, in order to achieve precise aeration control. The aerators 2 are connected to the aeration pipeline system 4 via threaded connections to ensure smooth airflow.

[0027] The aeration piping system 4 is made of 304 stainless steel, which has advantages such as corrosion resistance, high temperature resistance, and high pressure resistance, ensuring long-term stable operation of the system. Metal corrugated pipe compensators are installed at the connections to absorb thermal expansion and contraction deformation caused by temperature changes and media flow, improving system stability and durability.

[0028] One variable-speed vertical mixer 3 is installed in each aerobic zone 13, and the mixer 3 is located in the front zone 131 near the effluent position of the anoxic zone 12. The mixer 3 automatically adjusts the mixing speed according to the mixing requirements in the biological treatment process, improves the contact efficiency between wastewater and microorganisms, and promotes the biological reaction.

[0029] The main pipe 8 is located at the center line of the symmetrically designed biological treatment tank 1 to ensure that the sewage can be evenly distributed to each anaerobic zone 11. The inlet well 81 discharges sewage into one anaerobic zone 11 at the same time, while the outlet weir 83 collects the treated sewage and discharges it into the biological treatment tank 1.

[0030] The layout of the biological treatment tank 1 includes one anaerobic zone 11, one anoxic zone 12, and four aerobic zones 13 arranged in series. Wastewater flows sequentially through the anaerobic zone 11, the anoxic zone 12, and the aerobic zone 13 for treatment. The four aerobic zones 13 can be divided into two front zones 131 and two rear zones 132. Wastewater first passes through the two front zones 131 and then to the two rear zones 132. The drainage direction of the pump pipe assembly to the anoxic zone 12 is diagonally designed to be opposite to the drainage direction of the anoxic zone 12 to the aerobic zone 13. The through holes 61 of adjacent front zones 131 and rear zones 132 are also diagonally designed.

[0031] Electrical installation in biological tank 1; installation of several adjustable aeration hole diameter plate-type microporous aerators 2 at the bottom of aerobic zone 13; installation of a variable speed vertical mixer 3 in aerobic zone 13; and setting up a water pump pipeline group in anaerobic zone 11 to allow sewage to flow from anaerobic zone 11 to anoxic zone 12.

[0032] In existing technologies, aerators 2 are often uniformly distributed, making it difficult to precisely control them according to the actual needs of the biochemical treatment process. In contrast, in the aerobic zone of this invention, the number of aerators 2 facing the sewage inflow direction is more dense than that facing the sewage outflow direction, thus achieving a decreasing layout of the aerators 2. Specifically, the aerators 2 in the two front zones 131 are arranged in a decreasing pattern, while the aerators 2 in the two rear zones 132 are regularly distributed and filled, which can be precisely controlled according to the oxygen demand of different areas of the aerobic zone 13, thereby improving aeration efficiency and reducing energy consumption.

[0033] The agitator 3 is located in the front zone 131 near the outlet of the anoxic zone 12; the front zone 131 and the rear zone 132 are also provided with partition walls 6 and through holes 61, so that the front zone 131 and the rear zone 132 can be connected in series and the sewage can flow; the through holes 61 of the two front zones 131 are all located on the tangent of the stirring direction of the agitator 3, so that the sewage can flow smoothly.

[0034] The main pipe 8 is constructed by setting the main pipe 8 along the symmetrical design of the biological pool 1, so that the inlet well 81 discharges water into the anaerobic zone 11 and the aerobic zone 13 discharges water into the outlet weir 83.

[0035] The aeration piping system 4 is constructed as follows: all pipes in the aeration piping system 4 are made of 304 stainless steel and are connected to all aerators 2.

[0036] Example 1

[0037] Biological Tank 1 Design: Dimensions: 20 meters long, 10 meters wide, and 5 meters deep. Layout: Divided into 2 anaerobic zones 11, 2 anoxic zones 12, and 8 aerobic zones 13. Each group consists of 1 anaerobic zone 11, 1 anoxic zone 12, and 4 aerobic zones 13, arranged in series. Biological Tank 1 is constructed using corrosion-resistant and durable concrete.

[0038] Aeration system installation: 1. Aerator type: slat-type microporous aerator 2, with adjustable aeration hole diameter; 2. Aerator arrangement: a decreasing distribution is adopted at the bottom of the aerobic zone 13, with more aerators 2 facing the sewage inflow direction in the aerobic zone; 3. Aeration pipeline system 4: made of stainless steel 304, with flexible compensators installed at the connection.

[0039] Mixing system installation: 1. Mixer type: variable speed vertical mixer 3; 2. Number of mixers: 2, 131 in each aerobic zone; 3. Mixer location: set in the front zone 131 near the outlet of the anoxic zone 12.

[0040] Mainstream pipe 8 construction: The inlet channel 82 and outlet channel 84 are set at the symmetrical line position of the two aerobic zones 13, so that the inlet well 81 can simultaneously and evenly discharge sewage towards the two anaerobic zones 11; and at the same time receive water from the outlet weir 83 of the two aerobic zones 13.

[0041] Wastewater first enters the main flow pipe 8 through the inlet well 81. The main flow pipe 8 is reasonably designed to ensure that the wastewater can be evenly distributed to each anaerobic zone 11 within the biological treatment tank 1. In the anaerobic zone 11, the wastewater comes into full contact with anaerobic bacteria, which degrade some organic matter, reducing the burden on subsequent treatment processes.

[0042] Subsequently, the wastewater enters the anoxic zone 12. Within the anoxic zone 12, nitrogen is removed from the wastewater through denitrification. The design of the anoxic zone 12 allows for sufficient contact between the water flow and the anoxic bacteria, improving denitrification efficiency.

[0043] After treatment in the anoxic zone 12, the wastewater enters the aerobic zone 13. The aerobic zone 13 is the core area of ​​the biological treatment process, equipped with adjustable-aperture slat-type microporous aerators 2. These aerators 2 are arranged in a decreasing pattern, meaning that more aerators 2 face the wastewater inflow direction within the aerobic zone, allowing for precise control based on the oxygen demand of different areas within the aerobic zone 13. The aerators 2 are connected to an external air source via an aeration pipeline system 4, providing sufficient oxygen to the aerobic zone 13. Simultaneously, the aerobic zone 13 also contains a variable-speed vertical mixer 3, which automatically adjusts its mixing speed according to the mixing requirements during the biological treatment process, improving the contact efficiency between wastewater and microorganisms. When enhanced denitrification is required, aeration can be stopped and only the mixer 3 can be activated to further improve the treatment effect. Within the aerobic zone 13, organic matter in the wastewater is further degraded, while elements such as nitrogen and phosphorus are also effectively removed.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new aeration structure of a biochemical tank, characterized in that: include: The biological treatment tank is equipped with an aerobic zone, an anoxic zone, and an anaerobic zone. Furthermore, a slatted microporous aerator is arranged at the bottom of the aerobic zone. The aerators are distributed in a decreasing manner within the aerobic zone to precisely control the oxygen demand according to the oxygen demand of different areas of the aerobic zone. Furthermore, the aerobic zone is equipped with a variable-speed vertical stirrer. The stirrer automatically adjusts the stirring speed according to the mixing requirements in the biochemical treatment process. When enhanced denitrification is required, aeration can be stopped and only the stirrer can be activated. The main pipe includes an inlet well, an inlet channel connected to the inlet well, an outlet weir, and an outlet channel connected to the outlet weir; the main pipe is located between the anaerobic zone and the aerobic zone, the inlet well is connected to the anaerobic zone, and the aerobic zone is connected to the outlet weir; An aeration pipeline system is provided, which is evenly arranged along the bottom of the aerobic zone, and the aerators are connected to the aeration pipeline system by threaded connections.

2. The aeration structure of a novel biochemical pool according to claim 1, characterized in that: A partition wall is provided between the aerobic zone and the anoxic zone, and the partition wall has through holes to allow water to flow freely between the aerobic zone and the anoxic zone.

3. The aeration structure of a novel biochemical pool according to claim 1, characterized in that: The aeration pipeline system is also equipped with an exhaust valve to discharge residual gas in the pipeline when the aeration pipeline system stops operating.

4. The aeration structure of a novel biochemical pool according to claim 1, characterized in that: The aeration pipeline system is equipped with a flexible compensator at the connection point, which is further a metal corrugated pipe compensator.

5. The aeration structure of a novel biochemical pool according to claim 1, characterized in that: In the aerobic zone, the number of aerators facing the sewage inflow direction is more dense than that facing the sewage outflow direction, so as to achieve the aerator decreasing layout.

6. The aeration structure of a novel biological treatment tank according to claim 5, characterized in that: The biological treatment tank is divided into at least one anaerobic zone, one anoxic zone, and four aerobic zones. The four aerobic zones can be further divided into two pre-zones and two post-zones. The aerators in the two pre-zones are arranged in a decreasing order, while the aerators in the two post-zones are regularly distributed and filled. Wastewater first passes through the two pre-zones and then through the two post-zones.

7. The aeration structure of a novel biological treatment tank according to claim 6, characterized in that: A water pump pipeline is installed in the anaerobic zone to allow wastewater to flow from the anaerobic zone to the anoxic zone; the drainage direction of the water pump pipeline to the anoxic zone is designed diagonally to the drainage direction of the anoxic zone to the aerobic zone.

8. The aeration structure of a novel biological treatment tank according to claim 7, characterized in that: The agitator is located in the front zone near the outlet of the anoxic zone; the front and rear zones are also equipped with partition walls and through holes, so that the front and rear zones can be connected in series and the sewage can flow; the through holes of the two front zones are located on the tangent of the agitator's stirring direction.

9. The aeration structure of a novel biological treatment tank according to claim 8, characterized in that: The through holes in the adjacent front and rear areas are designed diagonally.

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