Subway depot wastewater aeration adjusting tank

Abstract

The utility model relates to the technical field of metro construction, in particular to a metro depot wastewater aeration regulating tank which comprises a tank body, an aeration machine is mounted at the top of the tank body, an aeration main pipe is fixedly connected to the bottom of the aeration machine, an air distribution branch pipe is fixedly connected to the side face of the aeration main pipe, and aeration holes are fixedly connected to the top of the air distribution branch pipe; the aeration machine, the aeration main pipe, the air distribution branch pipes, the aeration holes, the tank body and the through grooves are used in cooperation, the aeration pipeline is laid at the bottom of the adjusting tank, micro-aeration is conducted on the adjusting tank, bottom sludge deposition can be prevented, formation of an oil-water separation interface of the adjusting tank can be delayed, and therefore the water quality in the adjusting tank is stabilized; through a certain stirring effect on the wastewater in the regulating tank, the concentration of silt in the water body at the lower part of the regulating tank is diluted, deposition is avoided, the abrasion of an impeller of the submersible pump and equipment is reduced, the treatment efficiency of the oil separator and the air flotation machine is improved, the effluent quality is improved, an anaerobic environment is prevented from being formed in the water body at the lower part of the regulating tank, and odor is reduced.

Description

Technical Field

[0001] This utility model relates to the field of subway construction technology, specifically to a wastewater aeration and regulation tank in a subway depot. Background Technology

[0002] A wastewater equalization tank is a structure used to regulate the influent and effluent flow rates of wastewater. Its main functions are regulating water quantity and quality, primarily through aeration. The installation of aeration pipes in a wastewater equalization tank requires first installing an equalization bracket at the bottom of the tank, and then installing the aeration pipes on the bracket. The specific installation steps are as follows: First, drill expansion bolt holes or concrete holes in the bottom of the tank using an impact drill. This process will affect the integrity and structure of the tank bottom. Then, inject anti-corrosion resin into the expansion bolt holes or concrete holes to prevent wastewater from corroding them and affecting the tank structure. Next, install the expansion bolts, then install the equalization bracket, and inject anti-corrosion resin again at the expansion bolt locations, wrapping the expansion bolts with resin to prevent corrosion by wastewater, which could cause the equalization bracket to detach and the aeration pipes to float. Finally, install the aeration pipes on the equalization bracket.

[0003] A wastewater equalization tank aeration pipe installation structure, authorized in China with announcement number CN209651986U, involves inserting the aeration pipe through a pre-drilled hole in a counterweight block. The weight of the counterweight block keeps the aeration pipe submerged at the bottom of the equalization tank, preventing it from floating. This installation structure is not fixedly connected to the tank bottom; during maintenance, the aeration pipe and counterweight block can be removed together from the tank, eliminating the need to empty the wastewater or enter the tank. Maintenance can be performed outside the tank, eliminating inconvenience caused by space limitations. Since the aeration pipe is fixed through the pre-drilled hole in the counterweight block, expansion bolts and other connectors are not required during installation, preventing damage to the tank bottom structure and reducing construction work and costs. The counterweight block material is readily available, low-cost, and, with appropriate corrosion protection, can be used in various environments, offering wide applicability, high reliability, and no risk of corrosion from the tank bottom concrete. Furthermore, the counterweight block's shape design promotes uniform mixing of water flow within the tank while preventing the accumulation of debris at the bottom.

[0004] There are still some shortcomings in its use.

[0005] 1. The design has a large water volume. If the outdoor oil separator is not maintained by pumping oil, a large amount of oily wastewater will remain in the equalization tank for a long time. As the operating time increases, most of the space in the equalization tank will be occupied by oil, resulting in extremely high oil content in the effluent, which will cause the treatment system to fail to operate normally.

[0006] 2. Subway depots are frequently undergoing construction and renovation, resulting in a large amount of silt during the rainy season. The silt enters the wastewater collection network through wastewater wells and misconnected wastewater pipes, ultimately leading to sludge accumulation in the regulating pond. Utility Model Content

[0007] The purpose of this invention is to provide an aeration and conditioning tank for wastewater from subway depots to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A wastewater aeration and equalization tank for subway depots includes a tank body, an aerator installed on the top of the tank body, an aeration main pipe fixedly connected to the bottom of the aerator, an air distribution branch pipe fixedly connected to the side of the aeration main pipe, an aeration hole fixedly connected to the top of the air distribution branch pipe, and a through groove opened on the top of the tank body, the through groove being located on the side of the aerator.

[0010] As a preferred embodiment of this utility model, multiple aeration holes are provided, and the multiple aeration holes are distributed at equal angles in the air distribution branch pipe, and the multiple aeration holes are all the same size.

[0011] As a preferred embodiment of this utility model, the gas distribution branch pipe is circular in shape, the gas distribution branch pipe is fixed to the inner bottom wall of the pool body, and the gas distribution branch pipe is provided with two layers.

[0012] As a preferred embodiment of this utility model, the aeration main pipe is cylindrical in shape, perpendicular to the inner wall of the tank, and is disposed on the side of the air distribution branch pipe.

[0013] As a preferred embodiment of this utility model, the two ends of the air distribution branch pipe are respectively connected to the aeration main pipe and the aeration hole, and the aerator is connected to the aeration main pipe.

[0014] As a preferred embodiment of this utility model, the pool body is circular in shape, the pool body is made of concrete, and the pool body is located at the bottom of the aerator.

[0015] As a preferred embodiment of this utility model, the multiple aeration holes are all conical in shape and are all located inside the pool body.

[0016] As a preferred embodiment of this utility model, the aerator is rectangular in shape, and the exterior material of the aerator is stainless steel.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, by using aerators, aeration main pipes, air distribution branch pipes, aeration holes, tank body and through channels in combination, aeration pipelines are laid at the bottom of the regulating tank. Micro-aeration of the regulating tank can not only prevent the deposition of sludge at the bottom, but also delay the formation of the oil-water separation interface in the regulating tank, thereby stabilizing the water quality in the regulating tank.

[0019] 2. In this utility model, by a certain stirring effect on the wastewater in the equalization tank, the concentration of silt in the lower part of the equalization tank is diluted, preventing sedimentation, reducing the wear of the submersible pump impeller and equipment, improving the treatment efficiency of the oil separator and air flotation machine, improving the quality of the effluent, preventing the formation of an anaerobic environment in the lower part of the equalization tank, and reducing the generation of odor. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the aeration main pipe and the air distribution branch pipe of this utility model;

[0023] Figure 4 This is a schematic diagram of the aerator and aeration main pipe of this utility model.

[0024] In the diagram: 1. Aerator; 2. Aeration main pipe; 3. Air distribution branch pipe; 4. Aeration hole; 5. Tank body; 6. Through channel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] For examples, please refer to Figure 1-4 This utility model provides a technical solution:

[0027] The wastewater aeration and equalization tank of the subway depot includes a tank body 5. An aerator 1 is installed on the top of the tank body 5. An aeration main pipe 2 is fixedly connected to the bottom of the aerator 1. An air distribution branch pipe 3 is fixedly connected to the side of the aeration main pipe 2. An aeration hole 4 is fixedly connected to the top of the air distribution branch pipe 3. A through groove 6 is opened on the top of the tank body 5 and is located on the side of the aerator 1.

[0028] In this embodiment, as Figure 1 and Figure 2 As shown, there are multiple aeration holes 4, which are evenly distributed at an angle within the air distribution branch pipe 3. The multiple aeration holes 4 are all the same size. The air distribution branch pipe 3 is circular in shape and is fixed to the inner bottom wall of the tank body 5. The air distribution branch pipe 3 has two layers.

[0029] In particular, by agitating the wastewater in the equalization tank, the concentration of silt in the lower part of the equalization tank is diluted, preventing sedimentation, reducing wear on the submersible pump impeller and equipment, improving the treatment efficiency of the oil separator and air flotation machine, improving the quality of the effluent, preventing the formation of an anaerobic environment in the lower part of the equalization tank, and reducing odor generation.

[0030] In this embodiment, as Figure 3 and Figure 4 As shown, the aeration main pipe 2 is cylindrical in shape and perpendicular to the inner wall of the tank body 5. The aeration main pipe 2 is located on the side of the air distribution branch pipe 3. The two ends of the air distribution branch pipe 3 are connected to the aeration main pipe 2 and the aeration holes 4, respectively. The aerator 1 is connected to the aeration main pipe 2. The tank body 5 is circular in shape and made of concrete. The tank body 5 is located at the bottom of the aerator 1. The multiple aeration holes 4 are all conical in shape and are located inside the tank body 5. The aerator 1 is rectangular in shape and made of stainless steel.

[0031] Among them, laying aeration main pipe 2 at the bottom of the equalization tank for micro-aeration can not only prevent the sedimentation of sludge at the bottom, but also delay the formation of the oil-water separation interface in the equalization tank, thereby stabilizing the water quality in the equalization tank.

[0032] The workflow of this utility model is as follows: When the wastewater aeration and equalization tank of the subway depot designed using this scheme is in operation, the construction of the concrete tank body 5 of the equalization tank is completed. Measurement and layout are carried out according to the design drawings. Pipe supports are arranged on the bottom and walls of the tank according to the design drawings. The aerator 1 is installed and adjusted. Pipes and accessories are installed according to the design drawings. After the equipment is installed, it is debugged. Aeration pipes are evenly laid at the bottom of the equalization tank. The aeration main pipe 2 is turned on at regular intervals to aerate and stir the water in the equalization tank. In addition, a vent pipe is set for deodorization and exhaust. The ineffective water level is appropriately lowered to reduce sludge formation. Generally, the lowest water level of the submersible pump or the vent of the external pump can be used. By a certain stirring effect on the wastewater in the equalization tank, the concentration of silt in the lower part of the equalization tank is diluted to avoid sedimentation. This reduces the wear of the submersible pump impeller and equipment, improves the treatment efficiency of the oil separator and air flotation machine, improves the effluent quality, avoids the formation of an anaerobic environment in the lower part of the equalization tank, and reduces odor generation.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A wastewater aeration and equalization tank for subway depots, comprising a tank body (5), characterized in that: An aerator (1) is installed on the top of the tank body (5). An aeration main pipe (2) is fixedly connected to the bottom of the aerator (1). An air distribution branch pipe (3) is fixedly connected to the side of the aeration main pipe (2). An aeration hole (4) is fixedly connected to the top of the air distribution branch pipe (3). A through groove (6) is opened on the top of the tank body (5). The through groove (6) is located on the side of the aerator (1). Multiple aeration holes (4) are provided. The multiple aeration holes (4) are evenly distributed at an angle in the air distribution branch pipe (3). The multiple aeration holes (4) are all the same size. The shape of the air distribution branch pipe (3) is as follows: The tank body (5) is circular, and the air distribution branch pipe (3) is fixed to the inner bottom wall of the tank body (5). The air distribution branch pipe (3) has two layers. The aeration main pipe (2) is cylindrical in shape. The aeration main pipe (2) is perpendicular to the inner surface wall of the tank body (5). The aeration main pipe (2) is located on the side of the air distribution branch pipe (3). The two ends of the air distribution branch pipe (3) are connected to the aeration main pipe (2) and the aeration hole (4) respectively. The aerator (1) is connected to the aeration main pipe (2). The tank body (5) is circular in shape and is made of concrete. The tank body (5) is located at the bottom of the aerator (1).

2. The wastewater aeration and equalization tank for subway depots according to claim 1, characterized in that: The multiple aeration holes (4) are all conical in shape, and the multiple aeration holes (4) are all located inside the pool body (5).

3. The wastewater aeration and equalization tank for subway depots according to claim 1, characterized in that: The aerator (1) is rectangular in shape and the exterior of the aerator (1) is made of stainless steel.

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