A sewage treatment aeration tank

Abstract

The utility model discloses a sewage treatment aeration tank, aeration tank one side is provided with the water inlet and reflux, and the other side is provided with the water outlet opposite the water inlet, and a plurality of baffle plates are fixedly connected in the aeration tank, and the baffle plate divides the aeration tank into multiple chambers, and the mounting plate is fixedly connected at the upper opening of aeration tank, and a plurality of stirring devices corresponding to each chamber of aeration tank are fixedly connected on the mounting plate, and each stirring device extends into the corresponding chamber respectively, and the aeration disc is fixedly connected at the bottom of each chamber, and the utility model further includes aeration pump, and each aeration disc is connected with aeration pump through the pipe. The utility model discloses through the raw water is divided to each area, then again respectively to each area in raw water and sludge is ventilated and is stirred, thereby can make raw water and sludge in each area reach the same mixing effect, thereby can make the whole raw water and sludge mixing more evenly.

Description

Technical Field

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

[0002] In wastewater treatment, there is a process called activated sludge. Activated sludge is a flocculent formed by microbial communities (bacteria, fungi, protozoa, metazoa, etc.) and the organic and inorganic substances they adsorb. Its core "activity" comes from the microorganisms' ability to metabolize pollutants, similar to the self-purification function of natural water bodies.

[0003] The working principle is adsorption and degradation: microorganisms adsorb organic matter and suspended particles in wastewater through flocs, and then oxidize and decompose them, converting pollutants into CO2, H2O and the microorganisms' own substances. Ecosystem cooperation: flocs and filamentous bacteria form a network structure, with the former promoting flocculation and sedimentation and the latter serving as a supporting framework; a food chain is formed among microorganisms, with protozoa preying on bacteria and metazoa further decomposing the residues.

[0004] The activated sludge process flow is as follows: Aeration stage: oxygen is continuously supplied to the wastewater to promote the metabolism of organic matter by aerobic microorganisms; Sedimentation and separation: the mixed liquor enters the secondary sedimentation tank, the activated sludge settles and is returned to the aeration tank, and the clear water is discharged.

[0005] Aeration can disperse sludge, allowing it to better contact and mix with wastewater. However, in larger wastewater aeration tanks, sludge in areas far from the aeration device is not significantly dispersed by aeration and tends to clump together and settle, failing to mix and contact well with the wastewater, thus reducing the purification effect. Utility Model Content

[0006] The purpose of this invention is to provide a wastewater treatment aeration box, which has the advantage of enabling raw water and activated sludge to be mixed more thoroughly.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A wastewater treatment aeration box includes an inlet and a return outlet on one side, and an outlet on the opposite side. The inlet and outlet are connected to a raw water tank and a sedimentation tank respectively via conduits, with a drive unit connected to each conduit. Multiple partition plates are fixedly connected within the aeration box, dividing it into multiple chambers, each containing sludge. An mounting plate is fixedly connected to the upper opening of the aeration box, and multiple stirring devices corresponding to each chamber are fixedly connected to the mounting plate, extending into their respective chambers. An aeration disc is fixedly connected to the bottom of each chamber, and each aeration disc is connected to a conduit extending out of the chamber and connected to a distributor. The aeration box also includes an aeration pump connected to the distributor via a conduit.

[0009] Using the above technical solution, the raw water in the raw water tank, driven by the raw water actuator, enters a chamber in the aeration tank through a conduit. When the chamber is full, the raw water overflows into other chambers in the aeration tank, thus filling the entire aeration tank with water. The aeration pump delivers oxygen to each chamber and disperses the sludge at the bottom of each chamber. Simultaneously, the stirring device agitates the raw water and sludge in the chambers, allowing for better contact and mixing. After a period of decomposition by microorganisms in the sludge, the inorganic and organic matter in the raw water enters the sedimentation tank under the action of the actuator on the conduit located between the aeration tank and the sedimentation tank. After a period of sedimentation, the sludge separates from the clear water. By distributing the raw water to various areas and then aerating and stirring the raw water and sludge in each area, the raw water and sludge in each area can achieve the same mixing effect, resulting in a more uniform mixture of raw water and sludge.

[0010] Preferably, a connecting plate is provided at the upper opening of the sedimentation tank, and the connecting plate has an inlet. An outlet is provided near the upper end of the side wall of the sedimentation tank. The conduit between the outlet of the aeration tank and the inlet of the sedimentation tank is connected to a distributor at the pipe opening of the aeration tank. Multiple inlet branch pipes are connected to the distributor, and each inlet branch pipe passes through a corresponding chamber.

[0011] Using the above technical solution, under the action of the drive on the conduit between the outlet of the aeration box and the inlet of the sedimentation box, the raw water and sludge in each chamber enter their respective inlet branch pipes, then converge into the conduit, and finally enter the sedimentation box. After a period of sedimentation, the sludge sinks to the bottom of the sedimentation box and separates from the clear water, and the clear water is discharged from the outlet at the upper end of the side wall of the sedimentation box.

[0012] Preferably, the sedimentation tank has an opening at the bottom, and a conduit is connected to the opening. A drive unit is connected to the conduit. The conduit enters the interior of the aeration tank from the return port. The conduit at the bottom of the sedimentation tank is connected to a distributor inside the aeration tank. The distributor is connected to multiple outlet branches, and each outlet branch leads into a corresponding chamber.

[0013] Using the above technical solution, the sludge at the bottom of the sedimentation tank enters the conduit under the action of the actuator on the conduit between the aeration tank return port and the bottom opening of the sedimentation tank, and then flows from the conduit to each effluent branch pipe, and finally flows from each effluent branch pipe into the corresponding chamber.

[0014] Preferably, the driving component is a peristaltic pump, and the conduit passes through the peristaltic pump.

[0015] Using the above technical solution, a peristaltic pump drives the flow in the conduit.

[0016] Preferably, the partition includes a main board, to which multiple side boards are fixedly connected in a cross shape.

[0017] Using the above technical solution, the aeration box is divided into multiple areas through the main board and side plates. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of the embodiment;

[0019] Figure 2 This is a front view of an embodiment;

[0020] Figure 3 This is a side view of an embodiment;

[0021] Figure 4 This is a top view diagram of an embodiment;

[0022] Figure 5 This is a cross-sectional view along the BB direction of the embodiment;

[0023] Figure 6 This is a schematic diagram of the internal structure of the aeration box;

[0024] Figure 7 This is an overall schematic diagram from another perspective of the embodiment.

[0025] Reference numerals in the attached diagram: 1. Aeration box; 2. Guide tube; 3. Raw water tank; 4. Sedimentation tank; 5. Divider plate; 6. Chamber; 7. Mounting plate; 8. Aeration disc; 9. Aeration pump; 10. Diverter; 11. Inlet branch pipe; 12. Outlet branch pipe; 13. Motor; 14. Stirring rod; 15. Peristaltic pump. Detailed Implementation

[0026] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

[0027] See Figure 1 , Figure 2 and Figure 6 A wastewater treatment aeration box 1 has pipe interfaces on both sides. One side of the aeration box 1 has an inlet and a return outlet, and the other side, opposite the inlet, has an outlet. The inlet and outlet of the aeration box 1 are connected to a raw water tank 3 and a sedimentation tank 4 respectively via conduits 2. A connecting plate with an inlet is provided at the upper opening of the sedimentation tank 4, and an outlet is provided near the upper end of the side wall of the sedimentation tank 4. A distributor 10 is connected to the conduit 2 between the outlet of the aeration box 1 and the inlet of the sedimentation tank 4 at the pipe opening of the aeration box 1. Multiple inlet branch pipes 11 are connected to the distributor 10, each branch pipe 11 passing through a corresponding chamber 6. A peristaltic pump 15 is connected to each conduit 2.

[0028] See Figure 1 , Figure 3 , Figures 5 to 7 An aeration box 1 is fixedly connected to a partition plate 5. The partition plate 5 includes a main plate, to which multiple side plates are fixedly connected in a cross shape. The partition plate 5 divides the aeration box 1 into multiple chambers 6. An installation plate 7 is fixedly connected to the upper opening of the aeration box 1. Multiple motors 13 are fixedly connected to the upper part of the installation plate 7. A stirring rod 14 is fixedly connected to the output shaft of each motor 13, and the stirring rod 14 on each motor 13 extends into the corresponding chamber 6. An aeration disc 8 is fixedly connected to the bottom of each chamber 6. Each aeration disc 8 is connected to a conduit 2. The conduit 2 extends out of the chamber 6 and is connected to a distributor 10. An aeration pump 9 is also included, which is connected to the distributor 10 through the conduit 2.

[0029] See Figure 1 , Figure 2 and Figure 6 The bottom of the sedimentation tank 4 has an opening, and the opening is connected to the conduit 2. A valve is installed between the conduit 2 and the bottom opening of the sedimentation tank 4. A peristaltic pump 15 is connected to the conduit 2. The conduit 2 enters the interior of the aeration tank 1 from the return port. The pipe opening of the conduit 2 at the bottom of the sedimentation tank 4 inside the aeration tank 1 is connected to a distributor 10. The distributor 10 is connected to multiple outlet branch pipes 12, and each outlet branch pipe 12 leads into the corresponding chamber 6.

[0030] Working Principle: Under the action of the raw water actuator in the raw water tank 3, the raw water enters one of the chambers 6 of the aeration tank 1 through the conduit 2. When the raw water in this chamber 6 is full, it overflows into the other chambers 6 in the aeration tank 1, thus filling the entire aeration tank 1 with water. The aeration pump 9 delivers oxygen to each chamber 6 and suspends and disperses the sludge at the bottom of each chamber 6. At the same time, the stirring device agitates the raw water and sludge in the chamber 6, allowing for better contact and mixing. After a period of decomposition of inorganic and organic matter in the raw water by microorganisms in the sludge, the water and sludge in each chamber 6, under the action of the peristaltic pump 15 on the conduit 2 between the outlet of the aeration tank 1 and the inlet of the sedimentation tank 4, enter their respective inlet branch pipes 11, then converge back into the conduit 2, and finally enter the sedimentation tank 4. After a period of sedimentation, the sludge settles to the bottom of the sedimentation tank 4 and separates from the clear water. The clear water is discharged from the outlet at the upper end of the side wall of the sedimentation tank 4. After a period of sedimentation, the sludge and clear water are separated. The sludge at the bottom of the sedimentation tank 4 enters the conduit 2 through the peristaltic pump 15 between the return port of the aeration tank 1 and the bottom opening of the sedimentation tank 4. It then flows from the conduit 2 into each outlet branch pipe 12, and finally flows from each outlet branch pipe 12 into the corresponding chamber 6. By distributing the raw water to each area and then aerating and stirring the raw water and sludge in each area, the raw water and sludge in each area can achieve the same mixing effect, thus making the raw water and sludge mixed more evenly.

Claims

1. A wastewater treatment aeration box, wherein the aeration box (1) is provided with pipe interfaces on both sides, an inlet and a return outlet are provided on one side of the aeration box (1), and an outlet is provided on the other side opposite to the inlet. The inlet and outlet of the aeration box (1) are connected to a raw water tank (3) and a sedimentation tank (4) respectively through conduits (2), and a driving component is connected to each conduit (2). The aeration box (1) is fixedly connected to multiple partition plates (5), which divide the aeration box (1) into multiple chambers (6). An installation plate (7) is fixedly connected to the upper opening of the aeration box (1). Multiple stirring devices corresponding to each chamber (6) of the aeration box (1) are fixedly connected to the installation plate (7). Each stirring device extends into its corresponding chamber (6). An aeration disc (8) is fixedly connected to the bottom of each chamber (6). Each aeration disc (8) is connected to a conduit (2). The conduit (2) extends out of the chamber (6) and is connected to a distributor (10). The aeration box (9) is also included. The aeration pump (9) is connected to the distributor (10) through the conduit (2).

2. The wastewater treatment aeration box according to claim 1, characterized in that, A connecting plate is provided at the upper opening of the sedimentation tank (4), and the connecting plate has an inlet. An outlet is provided on the side wall of the sedimentation tank (4) near the upper end. The conduit (2) between the outlet of the aeration tank (1) and the inlet of the sedimentation tank (4) is connected to a distributor (10) at the pipe opening of the aeration tank (1). Multiple inlet branch pipes (11) are connected to the distributor (10), and each inlet branch pipe (11) is inserted into the corresponding chamber (6).

3. The wastewater treatment aeration box according to claim 2, characterized in that, The bottom opening of the sedimentation tank (4) is connected to a conduit (2), and a drive unit is connected to the conduit (2). The conduit (2) enters the interior of the aeration tank (1) from the return port. The bottom end of the sedimentation tank (4) is connected to a splitter (10) at the pipe opening inside the aeration tank (1). The splitter (10) is connected to multiple outlet branch pipes (12), and each outlet branch pipe (12) is connected to a corresponding chamber (6).

4. The wastewater treatment aeration box according to claim 1, characterized in that, The stirring device includes a motor (13) and a stirring rod (14). The motor (13) is fixedly connected to the upper part of the mounting plate (7). The stirring rod (14) is fixedly connected to the output shaft of the motor (13), and the stirring rod (14) on each motor (13) extends into the corresponding chamber (6).

5. A wastewater treatment aeration box according to claim 1, characterized in that, The driving component is a peristaltic pump (15), and the conduit (2) passes through the peristaltic pump (15).

6. The wastewater treatment aeration box according to claim 1, characterized in that, The partition plate (5) includes a main board, and multiple side plates are fixedly connected to the main board in a cross shape.

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