A biochemical treatment device

Abstract

The utility model discloses a biochemical treatment device belongs to a biochemical treatment device field, including central sedimentation tank, anaerobic tank, aerobic tank, inlet pipe, first flow guide pipe, second flow guide pipe and outlet pipe, anaerobic tank surrounds setting in the outside of central sedimentation tank, aerobic tank surrounds setting in the outside of anaerobic tank, inlet pipe is connected with anaerobic tank to input sewage, and the both ends of first flow guide pipe are connected to aerobic tank and anaerobic tank respectively, for with the sewage in anaerobic tank is transported to aerobic tank, and the both ends of second flow guide pipe are connected to aerobic tank and central sedimentation tank respectively, for with the sewage in aerobic tank is transported to central sedimentation tank, and outlet pipe is connected with central sedimentation tank, for with the purified water in central sedimentation tank is discharged. The anaerobic tank, the aerobic tank and the central sedimentation tank are organically integrated in a concentric circle in the embodiment of the application, which effectively reduces the manufacturing cost, reduces the floor area, reduces the construction cost, shortens the construction period and is convenient and simple to operate and manage.

Description

Technical Field

[0001] This utility model relates to the field of wastewater biochemical treatment technology, and in particular to a biochemical treatment device. Background Technology

[0002] Biological wastewater treatment involves multiple processes, including hydrolysis acidification (anaerobic), anoxic treatment, aerobic treatment, and sedimentation. It is generally used for treating municipal wastewater, residential sewage, river and canal wastewater remediation, black and odorous water body treatment, aquaculture wastewater, and various industrial wastewaters. Currently, wastewater is typically collected and sent to dedicated wastewater treatment plants, which are equipped with anaerobic, anoxic, aerobic, and sedimentation tanks. Wastewater flows through each treatment tank sequentially for purification. Traditional biological treatment systems separate pre-sedimentation, anaerobic, anoxic, aerobic, and sedimentation processes, resulting in disadvantages such as large footprint, numerous pipeline connections, multiple equipment configurations, and low treatment efficiency. This traditional planar layout is increasingly unsuitable, especially in land-constrained cities or industrial enterprises. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a biochemical treatment device.

[0004] A biochemical treatment device according to an embodiment of the present invention includes: Central sedimentation tank, An anaerobic tank is arranged around the outside of the central sedimentation tank; An aerobic tank is arranged around the outside of the anaerobic tank; The inlet pipe is connected to the anaerobic tank to input wastewater; A first diversion pipe, with its two ends connected to the aerobic tank and the anaerobic tank respectively, is used to transport wastewater from the anaerobic tank to the aerobic tank. The second guide pipe has its two ends connected to the aerobic tank and the central sedimentation tank, respectively, and is used to transport the wastewater in the aerobic tank to the central sedimentation tank. The outlet pipe is connected to the central sedimentation tank and is used to discharge the purified water from the central sedimentation tank. The central sedimentation tank, the anaerobic tank, and the aerobic tank are all circular in shape and are arranged concentrically.

[0005] A biochemical treatment device according to an embodiment of the present invention has at least the following beneficial effects: Wastewater enters the anaerobic tank through the inlet pipe, then flows to the aerobic tank through the first guide pipe, and then to the central sedimentation tank through the second guide pipe. Finally, it is discharged through the effluent pipe. The water flow is entirely gravity-fed, requiring no additional energy supply. This embodiment organically integrates the hydrolysis and acidification (anaerobic tank), aerobic (aerobic tank), and sedimentation (central sedimentation tank) of wastewater treatment into a concentric circle, effectively reducing manufacturing costs, minimizing floor space, saving energy, improving treatment efficiency, optimizing the process, simplifying operation and management, reducing construction costs, shortening construction time, and making operation and management convenient and simple.

[0006] According to some embodiments of the present invention, it also includes multiple aeration pipe networks, which are laid at the bottom of the aerobic tank. The aeration pipe networks are used to spray air or oxygen into the aerobic tank to ensure the dissolved oxygen content of the aerobic tank.

[0007] According to some embodiments of this utility model, the included angle between two adjacent aeration pipe networks is in the range of 15°-25°.

[0008] According to some embodiments of the present invention, a first water flow regulating valve is provided at the inlet of the first guide pipe, and the first water flow regulating valve is used to regulate the water flow rate of the first guide pipe.

[0009] According to some embodiments of the present invention, a second water flow regulating valve is provided at the inlet of the second guide pipe, and the second water flow regulating valve is used to regulate the water flow rate of the second guide pipe.

[0010] According to some embodiments of this utility model, the outlet of the first guide pipe is arranged facing upwards.

[0011] According to some embodiments of the present invention, the first guide pipe is U-shaped, and the outlet of the first guide pipe is located below the inlet of the first guide pipe.

[0012] According to some embodiments of the present invention, a first guiding channel is provided inside the second guiding pipe, and a central guiding cylinder connected to the second guiding pipe is provided in the central sedimentation tank, and a second guiding channel communicating with the first guiding channel is provided inside the central guiding cylinder.

[0013] According to some embodiments of the present invention, the second flow channel includes a first flow hole and a plurality of second flow holes. The first flow holes are distributed along the axial direction of the central flow cylinder and are connected to the first flow channel. The plurality of second flow holes are distributed along the radial direction of the central flow cylinder and are connected to the first flow hole and the central sedimentation tank.

[0014] According to some embodiments of the present invention, a sludge hopper is provided at the bottom of the central sedimentation tank, and a sludge scraper is provided inside the central sedimentation tank. The sludge scraper includes a drive assembly and a scraper blade connected to each other. The drive assembly is installed on the central guide cylinder, and the drive assembly is used to drive the scraper blade to rotate around the central guide cylinder to scrape the sludge deposited in the central sedimentation tank into the sludge hopper.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the biochemical treatment device according to an embodiment of the present invention; Figure 2 for Figure 1 Sectional view of AA; Figure 3 for Figure 2 Enlarged view of B in the middle; Figure 4 This is a schematic diagram of the aeration pipe network arrangement in the biochemical treatment device according to an embodiment of the present invention.

[0017] Icon labels: 100. Central sedimentation tank; 110. Central guide tube; 111. Second guide channel; 1111. First guide hole; 1112. Second guide hole; 120. Sludge scraper; 121. Drive assembly; 122. Sludge scraper; 130. Effluent weir; 140. Sludge hopper; 200. Anaerobic tank; 300. Aerobic tank; 400. Water inlet pipe; 500. First guide pipe; 510. First water flow regulating valve; 600. Second guide pipe; 610. Second water flow regulating valve; 700. Water outlet pipe; 800. Aeration pipe network; a. The angle between two adjacent aeration pipe networks. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0021] Please see Figure 1 , Figure 2 and Figure 3 A biochemical treatment device according to an embodiment of this utility model includes a central sedimentation tank 100, an anaerobic tank 200, an aerobic tank 300, an inlet pipe 400, a first guide pipe 500, a second guide pipe 600, and an outlet pipe 700. The anaerobic tank 200 is arranged around the outside of the central sedimentation tank 100, and the aerobic tank 300 is arranged around the outside of the anaerobic tank 200. The central sedimentation tank 100, anaerobic tank 200, and aerobic tank 300 are all circularly arranged and concentrically positioned. The inlet pipe 400 is connected to the anaerobic tank 200 to input wastewater. The two ends of the first guide pipe 500 are connected to the aerobic tank 300 and the anaerobic tank 200, respectively, and the first guide pipe 500 is used to transport wastewater from the anaerobic tank 200 to the aerobic tank 300. The two ends of the second diversion pipe 600 are connected to the aerobic tank 300 and the central sedimentation tank 100, respectively. The second diversion pipe 600 is used to transport the wastewater in the aerobic tank 300 to the central sedimentation tank 100. The outlet pipe 700 is connected to the central sedimentation tank 100 and is used to discharge the purified water in the central sedimentation tank 100. The central sedimentation tank 100 is equipped with an outlet weir 130, which can control the water level elevation in the central sedimentation tank 100 and ensure the uniform distribution of water flow in the central sedimentation tank 100, thus ensuring the sedimentation effect.

[0022] Wastewater enters the anaerobic tank 200 through the inlet pipe 400, then flows through the first guide pipe 500 to the aerobic tank 300, and then through the second guide pipe 600 to the central sedimentation tank 100. Finally, it is discharged through the outlet pipe 700. The water flow is all gravity-fed and does not require additional energy supply. This embodiment of the application organically integrates the hydrolysis and acidification (anaerobic tank 200), aerobic (aerobic tank 300), and sedimentation (central sedimentation tank 100) of wastewater treatment into a concentric circle, effectively reducing manufacturing costs, reducing the footprint, saving energy, improving treatment efficiency, optimizing the process, simplifying operation and management, reducing construction costs, shortening the construction period, and making operation and management convenient and simple.

[0023] Depending on the designed treatment capacity, for water volumes below 10,000 tons / day, a three-circle-within-a-circle configuration can be used. The central sedimentation tank (100mm diameter) has a diameter of approximately 5-20 meters, with a surface loading rate of 0.7-1.0 m³ / m²*h. The inner circles are designed with different sludge loading rates depending on the water concentration: anaerobic tank (200mm diameter) can be designed with 2.0-3.5 kg / m³, and aerobic tank (300mm diameter) with 1.0-2.0 kg / m³. The outer diameter of this configuration is approximately 16-50 meters. Using multiple inner circles can save significant construction costs from a mechanical and structural perspective. The number of inner circles is not a major issue; the main considerations are safety and equipment manufacturing requirements.

[0024] In this embodiment, the inlet is located in the anaerobic tank 200 near the central sedimentation tank 100. It can be a decentralized inlet, or an inlet at one or more points, depending on the water volume. The depth of the anaerobic tank 200 and the aerobic tank 300 is about 5-6 meters. Therefore, in this embodiment, the water flowing from the anaerobic tank 200 to the aerobic tank 300, from the aerobic tank 300 to the central sedimentation tank 100, and the sedimentation effluent from the sedimentation tank are all gravity-fed and do not require additional energy supply.

[0025] In some embodiments, see Figure 1 , Figure 2 and Figure 4 The biological treatment device also includes multiple aeration pipe networks 800, which are laid at the bottom of the aerobic tank 300. The aeration pipe networks 800 are used to spray air or oxygen into the aerobic tank 300, thereby ensuring the dissolved oxygen level in the aerobic tank 300. The aeration pipe networks 800 use blowers and other equipment to transport air into the aeration pipes. The air flows through the pipe network and exits from the air holes, releasing into the water in the form of tiny bubbles. These tiny bubbles have a large surface area, increasing the contact area between the bubbles and the water, thus improving the efficiency of oxygen diffusion from the bubbles into the water.

[0026] In some embodiments, see Figure 1 , Figure 2 and Figure 4 The included angle between two adjacent aeration pipe networks 800 is between 15° and 25°. Preferably, it is 20°. The aeration pipe networks 800 in the aerobic tank 300 are densely arranged to meet the higher oxygen content requirements of the aerobic tank 300.

[0027] In some embodiments, see Figure 1 , Figure 2 and Figure 3 A first flow regulating valve 510 is installed at the inlet of the first diversion pipe 500 to regulate the flow rate through the first diversion pipe 500. The anaerobic tank 200 does not require any stirring; the anaerobic stirring is powered by the hydraulic flow and the sludge flowing from the aerobic tank 300 to the anaerobic tank 200, resulting in significant efficiency and energy savings. A first flow regulating valve 510 is installed between the anaerobic tank 200 and the aerobic tank 300 to control the amount of water entering the aerobic tank 300.

[0028] In some embodiments, see Figure 1 , Figure 2 and Figure 3 A second flow regulating valve 610 is installed at the inlet of the second diversion pipe 600. This valve regulates the flow rate through the second diversion pipe 600. The second flow regulating valve 610 controls the amount of water entering the central sedimentation tank 100 and also regulates the flow rate of the mixed liquor returning to the anaerobic tank 200. When the second flow regulating valve 610 is slightly closed, the water level in the aerobic tank 300 rises, and most of the mixed liquor flows into the anaerobic tank 200 for denitrification through the "mixed liquor return regulating valve / inlet." When the regulating valve is slightly opened, most of the water enters the central sedimentation tank 100, settles, and is discharged. A small portion of the mixed liquor flows into the anaerobic tank 200 for denitrification through the "mixed liquor return regulating valve / inlet." The opening and closing of the valve are adjusted according to the treatment efficiency.

[0029] In this embodiment, the size of the separation between the anaerobic tank 200 and the aerobic tank 300 can be adjusted according to the water quality, or an anoxic tank can be added.

[0030] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The outlet of the first guide pipe 500 is set upwards. The inlet of the aerobic tank 300 is designed to face upwards, which can reduce or prevent oxygen in the aerobic tank 300 from entering the anaerobic tank 200 and affecting the anaerobic effect.

[0031] In some embodiments, see Figure 1 , Figure 2 and Figure 3The first guide pipe 500 is U-shaped, with its outlet located below its inlet. Wastewater enters the anaerobic tank 200 via the inlet pipe 400. When the water level reaches the inlet of the first guide pipe 500, it can flow in through the inlet and then into the aerobic tank 300 from the outlet. The inlet of the first guide pipe 500 is positioned higher than its outlet to ensure proper wastewater flow within the pipe.

[0032] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The second guide pipe 600 is provided with a first guide channel, and the central sedimentation tank 100 is provided with a central guide cylinder 110 connected to the second guide pipe 600. The central guide cylinder 110 is provided with a second guide channel 111 connected to the first guide channel.

[0033] The second flow channel 111 includes a first flow channel 1111 and a plurality of second flow channels 1112. The first flow channel 1111 is distributed along the axial direction of the central flow channel 110 and is connected to the first flow channel. The plurality of second flow channels 1112 are distributed along the radial direction of the central flow channel 110 and are connected to the first flow channel 1111 and the central sedimentation tank 100.

[0034] In this embodiment of the application, a second guide pipe 600 is provided from the aerobic tank 300 to the inner circular sedimentation tank. The second guide pipe 600 directly enters the central guide cylinder 110 of the central sedimentation tank 100. The central guide cylinder 110 then guides the water to be evenly distributed to the surface of the central sedimentation tank 100 for effective mud-water separation.

[0035] In some embodiments, see Figure 1 , Figure 2 and Figure 3 A sludge hopper 140 is provided at the bottom of the central sedimentation tank 100 for collecting sludge. A scraper 120 is installed inside the central sedimentation tank 100, comprising a drive assembly 121 and a scraper blade 122 connected to each other. The drive assembly 121 is mounted on a central guide cylinder 110 and drives the scraper blade 122 to rotate around the central guide cylinder 110 to evenly scrape the sludge deposited in the central sedimentation tank 100 into the sludge hopper 140. In the central sedimentation tank 100, suspended solids in the wastewater gradually settle under gravity to form sludge. If not cleaned in time, the sludge will continuously accumulate at the bottom of the tank, affecting the effective volume of the sedimentation tank. The scraper 120, through continuous operation, scrapes the sludge settled at the bottom of the tank into the sludge hopper 140 at the bottom of the tank, preventing large-scale sludge accumulation at the bottom of the tank.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A biochemical treatment device, characterized in that, include: Central sedimentation tank, An anaerobic tank is arranged around the outside of the central sedimentation tank; An aerobic tank is arranged around the outside of the anaerobic tank; The inlet pipe is connected to the anaerobic tank to input wastewater; A first diversion pipe, with its two ends connected to the aerobic tank and the anaerobic tank respectively, is used to transport wastewater from the anaerobic tank to the aerobic tank. The second guide pipe has its two ends connected to the aerobic tank and the central sedimentation tank, respectively, and is used to transport the wastewater in the aerobic tank to the central sedimentation tank. The outlet pipe is connected to the central sedimentation tank and is used to discharge the purified water from the central sedimentation tank. The central sedimentation tank, the anaerobic tank, and the aerobic tank are all circular and concentrically arranged. Water flows from the anaerobic tank to the aerobic tank, from the aerobic tank to the central sedimentation tank, and the sedimented effluent from the sedimentation tank is all gravity-fed, requiring no additional energy supply.

2. The biochemical treatment device according to claim 1, characterized in that, It also includes multiple aeration pipe networks, which are laid at the bottom of the aerobic tank. The aeration pipe networks are used to spray air or oxygen into the aerobic tank to ensure the dissolved oxygen level of the aerobic tank.

3. The biochemical treatment device according to claim 2, characterized in that, The included angle between two adjacent aeration pipe networks is between 15° and 25°.

4. The biochemical treatment device according to claim 1, characterized in that, A first flow regulating valve is provided at the inlet of the first guide pipe, and the first flow regulating valve is used to regulate the flow rate of the first guide pipe.

5. The biochemical treatment device according to claim 1, characterized in that, A second flow regulating valve is provided at the inlet of the second guide pipe, which is used to regulate the flow rate of the second guide pipe.

6. The biochemical treatment device according to claim 1, characterized in that, The outlet of the first guide pipe is set facing upwards.

7. The biochemical treatment device according to claim 1, characterized in that, The first guide pipe is U-shaped, and the outlet of the first guide pipe is located below the inlet of the first guide pipe.

8. The biochemical treatment device according to claim 1, characterized in that, The second guide pipe is provided with a first guide channel, and the central sedimentation tank is provided with a central guide cylinder connected to the second guide pipe. The central guide cylinder is provided with a second guide channel that communicates with the first guide channel.

9. A biochemical treatment device according to claim 8, characterized in that, The second flow channel includes a first flow hole and a plurality of second flow holes. The first flow holes are distributed along the axial direction of the central flow cylinder and are connected to the first flow channel. The plurality of second flow holes are distributed along the radial direction of the central flow cylinder and are connected to the first flow hole and the central sedimentation tank.

10. A biochemical treatment device according to claim 8, characterized in that, The central sedimentation tank is equipped with a sludge hopper at the bottom and a sludge scraper inside the central sedimentation tank. The sludge scraper includes a drive assembly and a scraper blade connected to each other. The drive assembly is mounted on the central guide cylinder and is used to drive the scraper blade to rotate around the central guide cylinder to scrape the sludge deposited in the central sedimentation tank into the sludge hopper.

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