A device for controlling the temperature of a biochemical reaction of sewage treatment

Abstract

The utility model discloses a device of controlling sewage treatment biochemical reaction temperature is connected with aeration fan at the top of fixed base, the top of fixed base is connected with aeration cooler, and the output of aeration cooler is connected with total flow pipe. The utility model discloses through aeration cooler, first cooling tower and second cooling tower, the temperature control of the cooperation of aeration high temperature block and water inlet high temperature cooling is conveniently realized, makes the mixed solution temperature of primary biochemical A pool, primary biochemical B pool, secondary biochemical A pool and secondary biochemical B pool stable in the bacterial suitable interval, promotes the activity of nitrification and denitrification bacteria, and the processing effect of supplementary promotion sewage makes effluent stable and in line with environmental protection standard, solves the problem that the processing efficiency is reduced due to the high temperature of summer, and through first temperature sensor and second temperature sensor, the air temperature and water temperature are detected respectively, which helps to send alarm in time when the temperature does not reach the specified threshold value.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically a device for controlling the temperature of biochemical reactions in wastewater treatment. Background Technology

[0002] In the field of wastewater treatment, biochemical reactions are the core link in removing pollutants from wastewater. Their treatment efficiency is highly dependent on the metabolic activity of nitrifying and denitrifying bacteria. Temperature is a key environmental factor affecting bacterial activity. It is known that the optimal reaction temperature for nitrifying bacteria is 30℃, and the optimal reaction temperature for denitrifying bacteria is 34-37℃. When the ambient temperature exceeds 38℃, the metabolic activity of both types of bacteria will decrease significantly. If the temperature continues to be higher than 42℃, the bacteria will completely lose their activity, directly leading to the collapse of the purification capacity of the biochemical treatment system.

[0003] During the high temperatures of summer, the ambient air temperature rises significantly. The magnetic levitation aeration blowers widely used in existing wastewater treatment systems directly draw in high-temperature air from the environment during operation, resulting in the blower outlet air temperature reaching 100-120°C. When this high-temperature air is introduced into the biological treatment tank, it rapidly increases the temperature of the mixed liquor inside the tank. At the same time, the existing system does not have a specific temperature control design for the influent temperature, and the influent temperature rises simultaneously under high-temperature conditions. This dual effect makes it very easy for the overall temperature of the biological treatment system to exceed the bacterial tolerance threshold.

[0004] Currently, existing wastewater treatment technologies lack effective solutions to the above problems: some systems only attempt to cool down through simple ventilation, which cannot solve the core problem of high-temperature air directly entering the biological treatment tank; a few adopt single temperature control methods, such as cooling only the influent or treating only the aeration air, but because they do not form a synergistic temperature control mechanism, the temperature control effect is limited, and it is difficult to stably control the temperature of the biological treatment tank within the suitable range for bacteria. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a device for controlling the temperature of biochemical reactions in wastewater treatment, which has the advantage of effectively controlling the temperature of biochemical reactions in wastewater treatment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for controlling the temperature of a biochemical reaction in wastewater treatment, comprising a fixed base, an aeration blower connected to the top of the fixed base, an aeration cooler connected to the top of the fixed base, a main flow pipe connected to the output end of the aeration cooler, a first temperature sensor connected to the surface of the main flow pipe, a primary biochemical tank A connected to the top of the fixed base, a primary biochemical tank B connected to the top of the fixed base, a secondary biochemical tank A connected to the top of the fixed base, a secondary biochemical tank B connected to the top of the fixed base, a pretreatment regulating tank connected to the top of the fixed base, a first cooling tower connected to the top of the fixed base, a second cooling tower connected to the top of the fixed base, and three lift pumps connected to the top of the fixed base. A connecting pipe is connected to one side of each of the three lift pumps, and a fixed pipe is connected to the other side of each of the three lift pumps. A second temperature sensor is connected to the surface of the fixed pipe.

[0007] In a preferred embodiment, the input end of the aeration blower is connected to an air inlet pipe, and the output end of the aeration blower is connected to an air outlet pipe.

[0008] In a preferred embodiment, the input end of the aeration cooler is connected to one end of the air outlet pipe.

[0009] In a preferred embodiment, both the surface of the first cooling tower and the surface of the second cooling tower are connected to connecting pipes, one end of which is connected to one side of the primary biochemical pool A, and the other end of which is connected to one side of the primary biochemical pool B.

[0010] In a preferred embodiment, the surface of the connecting pipe is connected to one side of both the first cooling tower and the second cooling tower.

[0011] In a preferred embodiment, one end of the fixed tube is connected to one side of the pretreatment conditioning tank.

[0012] In a preferred embodiment, the surface of the second temperature sensor is connected to the surface of the pretreatment conditioning tank.

[0013] This invention, through an aeration cooler, a first cooling tower, and a second cooling tower, facilitates coordinated temperature control by blocking high-temperature aeration and cooling high-temperature influent. This ensures that the mixed liquor temperature in the primary biological treatment tank A, primary biological treatment tank B, secondary biological treatment tank A, and secondary biological treatment tank B remains stable within the optimal range for bacteria, enhancing the activity of nitrifying and denitrifying bacteria, and thus improving wastewater treatment efficiency. The resulting effluent consistently meets environmental standards, addressing the issue of reduced treatment efficiency caused by high summer temperatures. The first and second temperature sensors facilitate the separate detection of influent air and water temperatures, enabling timely alarms when temperatures fall below specified thresholds. Furthermore, the addition of the aeration cooler, first cooling tower, second cooling tower, first temperature sensor, and second temperature sensor does not require reconstruction of the original influent and aeration pathways; construction can be completed simply by adding branch pipes. The modification process does not affect the intermittent operation of the original system, reducing modification costs and construction impact. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the planar structure of this utility model; Figure 3 This is a side view of the present invention. Figure 4 This is a schematic diagram of the side planar structure of this utility model.

[0015] In the diagram: 1. Fixed base; 2. Aeration blower; 3. Air inlet pipe; 4. Air outlet pipe; 5. Aeration cooler; 6. Aeration pipe; 7. First temperature sensor; 8. Primary biochemical tank A; 9. Primary biochemical tank B; 10. Secondary biochemical tank A; 11. Secondary biochemical tank B; 12. Pretreatment conditioning tank; 13. First cooling tower; 14. Second cooling tower; 15. Connecting pipe; 16. Lift pump; 17. Fixed pipe; 18. Second temperature sensor. Detailed Implementation

[0016] like Figure 1-4As shown, this utility model provides a device for controlling the temperature of the biochemical reaction in wastewater treatment. An aeration blower 2 is connected to the top of a fixed base 1, and an aeration cooler 5 is also connected to the top of the fixed base 1. This facilitates cooling of the high-temperature air output by the aeration blower 2, preventing the high-temperature air from affecting the bacterial activity in the biochemical tank. A main flow pipe 6 is connected to the output end of the aeration cooler 5, and a first temperature sensor 7 is connected to the surface of the main flow pipe 6. A primary biochemical A tank 8 is connected to the top of the fixed base 1. The primary biochemical A tank 8 serves as the first unit in the wastewater biochemical treatment, facilitating the initial degradation of pollutants. A primary biochemical B tank 9 is connected to the top of the fixed base 1, forming a series of treatment units, which facilitates the improvement of treatment efficiency. The total capacity of the wastewater treatment is increased. The top of the fixed base 1 is connected to a secondary biological treatment tank A 10 and a secondary biological treatment tank B 11, which facilitates the gradual deep treatment of wastewater and improves the pollutant removal efficiency. The top of the fixed base 1 is connected to a pretreatment equalization tank 12, a first cooling tower 13, a second cooling tower 14, and three lift pumps 16. One side of the three lift pumps 16 is connected to a connecting pipe 15, and the other side of the three lift pumps 16 is connected to a fixed pipe 17. The surface of the fixed pipe 17 is connected to a second temperature sensor 18, which facilitates real-time monitoring of the effluent temperature of the pretreatment equalization tank 12.

[0017] Specifically, the input end of the aeration blower 2 is connected to the air inlet pipe 3, which provides a stable air input channel for the aeration blower 2 and ensures sufficient air supply for aeration. The output end of the aeration blower 2 is connected to the air outlet pipe 4, which facilitates the connection between the aeration blower 2 and the aeration cooler 5, ensuring that high-temperature air can be transported and cooled.

[0018] The input end of the aeration cooler 5 is connected to one end of the air outlet pipe 4 to prevent high-temperature air leakage from affecting the temperature control effect.

[0019] Both the surface of the first cooling tower 13 and the surface of the second cooling tower 14 are connected to connecting pipes. One end of one connecting pipe is connected to one side of the primary biological A pool 8, and the other end of the connecting pipe is connected to one side of the primary biological B pool 9, so as to ensure independent control of the inlet water temperature of the primary biological A pool 8, the primary biological B pool 9, the secondary biological A pool 10 and the secondary biological B pool 11.

[0020] The surface of the connecting pipe 15 is connected to one side of the first cooling tower 13 and one side of the second cooling tower 14, which facilitates the improvement of the efficiency of water delivery.

[0021] One end of the fixed pipe 17 is connected to one side of the pretreatment equalization tank 12, so that the pretreated sewage can be stably transported to the lift pump 16.

[0022] The surface of the second temperature sensor 18 is connected to the surface of the pretreatment conditioning tank 12, which facilitates direct connection with the pretreatment conditioning tank 12, accurately monitors the initial temperature of the incoming water, and provides accurate data for the control of subsequent cooling processes.

[0023] Among them, the aeration cooler 5, the first temperature sensor 7, the first cooling tower 13, the second cooling tower 14, and the second temperature sensor 18 are existing technologies.

[0024] Working principle: First, the aeration blower 2 is turned on to draw in high-temperature air in summer and compress it. The compressed high-temperature air enters the modified and added aeration cooler 5. The cooling water circuit of the aeration cooler 5 is connected, so that the high-temperature air and the cooling water can complete heat exchange and cool down to a certain range, such as 38~40℃. The cooled air is then simultaneously transported to the primary biological A tank 8, primary biological B tank 9, secondary biological A tank 10 and secondary biological B tank 11 through the main flow pipe 6 to provide aeration for the biological reaction. Then, the lift pump 16 of the pretreatment equalization tank 12 is started to transport the sewage in the pretreatment equalization tank 12 to the first cooling tower 13 and the second cooling tower 14. After the sewage is cooled to a specified temperature, such as 30~32℃, by the first cooling tower 13 and the second cooling tower 14, it enters the primary biological A tank 8 and the primary biological B tank 9 respectively, and then flows by gravity into the corresponding secondary biological A tank 10 and secondary biological B tank 11. After the wastewater treatment in the primary biological treatment tank A 8, primary biological treatment tank B 9, secondary biological treatment tank A 10, and secondary biological treatment tank B 11 is completed, first stop the operation of the lift pump 16, cut off the water supply from the pretreatment equalization tank 12 to the first cooling tower 13 and the second cooling tower 14, then stop the aeration blower 2, close the cooling water circuit of the aeration cooler 5, and perform maintenance on the aeration cooler 5, the first cooling tower 13, and the second cooling tower 14. Simultaneously, check the bearing lubrication status of the lift pump 16 and the aeration blower 2 to ensure the reliability of the next startup. The first temperature sensor 7, model PT100, installed on the surface of the main flow pipe 6, which is also installed at the air outlet of the aeration cooler 5, monitors the aeration temperature. The set threshold is ≤40℃. If the temperature exceeds the threshold, an alarm will be issued. The second temperature sensor 18, model PT100, installed on the lift pump 16, which is also installed at the port of the fixed pipe 17, is used to monitor the water temperature. The set threshold is ≤32℃. If the temperature exceeds the threshold, the first cooling tower 13 and the second cooling tower 14 will be activated. This is the existing PLC control and will not be explained in detail here.

[0025] 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 device for controlling the temperature of biochemical reactions in wastewater treatment, characterized in that: An aeration fan (2) is connected to the top of the fixed base (1), an aeration cooler (5) is connected to the top of the fixed base (1), a main flow pipe (6) is connected to the output end of the aeration cooler (5), a first temperature sensor (7) is connected to the surface of the main flow pipe (6), a primary biochemical A tank (8) is connected to the top of the fixed base (1), a primary biochemical B tank (9) is connected to the top of the fixed base (1), a secondary biochemical A tank (10) is connected to the top of the fixed base (1), and a secondary biochemical A tank (10) is connected to the top of the fixed base (1). The top of the fixed base (1) is connected to the pretreatment conditioning tank (12), the top of the fixed base (1) is connected to the first cooling tower (13), the top of the fixed base (1) is connected to the second cooling tower (14), the top of the fixed base (1) is connected to three lift pumps (16), one side of the three lift pumps (16) is connected to the connecting pipe (15), the other side of the three lift pumps (16) is connected to the fixed pipe (17), and the surface of the fixed pipe (17) is connected to the second temperature sensor (18).

2. The device for controlling the temperature of biochemical reactions in wastewater treatment according to claim 1, characterized in that: The aeration blower (2) has an air inlet pipe (3) connected to its input end and an air outlet pipe (4) connected to its output end.

3. The device for controlling the temperature of biochemical reactions in wastewater treatment according to claim 2, characterized in that: The input end of the aeration cooler (5) is connected to one end of the air outlet pipe (4).

4. The device for controlling the temperature of biochemical reactions in wastewater treatment according to claim 1, characterized in that: Both the surface of the first cooling tower (13) and the surface of the second cooling tower (14) are connected to connecting pipes. One end of one connecting pipe is connected to one side of the primary biochemical pool A (8), and the other end of the connecting pipe is connected to one side of the primary biochemical pool B (9).

5. The device for controlling the temperature of biochemical reactions in wastewater treatment according to claim 1, characterized in that: The surface of the connecting pipe (15) is connected to one side of the first cooling tower (13) and one side of the second cooling tower (14).

6. The device for controlling the temperature of biochemical reactions in wastewater treatment according to claim 1, characterized in that: One end of the fixed pipe (17) is connected to one side of the pretreatment conditioning tank (12).

7. The device for controlling the temperature of biochemical reactions in wastewater treatment according to claim 1, characterized in that: The surface of the second temperature sensor (18) is connected to the surface of the pretreatment conditioning tank (12).

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