Device and system for measuring oxygen transfer coefficient

Abstract

The utility model discloses a device and a system for measuring an oxygen transfer coefficient, which comprise a reaction kettle, a dissolved oxygen meter arranged in the reaction kettle, a clean water tank, a sewage tank, a deoxidizer tank, a catalyst tank, a liquid level meter, a thermostat and a timer, the reaction kettle is respectively communicated with the clean water tank, the sewage tank, the deoxidizer tank and the catalyst tank, the liquid level meter and the thermostat are arranged in the reaction kettle, the liquid level meter and the thermostat are respectively positioned at the top end and the bottom end of the reaction kettle, and the timer is in signal connection with the thermostat. The volume and the temperature of liquid in the reaction kettle are accurately controlled through the liquid level meter and the thermostat respectively, and the oxygen transfer coefficient is measured and calculated by the dissolved oxygen meter mounted in the reaction kettle, so that the influence of volume and temperature fluctuation on the measurement of the oxygen transfer coefficient is reduced, experimental errors caused by liquid level and temperature changes are avoided, and the experimental accuracy is improved. And the dissolved oxygen content in the liquid in the reaction kettle can be accurately measured.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a device and system for measuring the oxygen transfer coefficient. Background Technology

[0002] The oxygen transfer coefficient (KLa) is a crucial parameter describing the efficiency of oxygen transfer in liquids, playing a vital role in research on bioreactors and wastewater treatment. It influences the growth and metabolic rates of microorganisms, directly impacting treatment efficiency and energy consumption. In actual wastewater treatment processes, organic matter and other pollutants in the wastewater affect oxygen mass transfer; therefore, it is necessary to adjust the oxygen transfer coefficient by measuring the cleanliness correction factor to improve accuracy and save operating costs. Current research indicates that parameters such as temperature, water depth, bubble size, water composition, and stirring intensity all affect the oxygen transfer coefficient, thus requiring measurements tailored to specific conditions. Conventional testing devices measure too few parameters, making it difficult to determine the coefficient for specific water qualities.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a device and system for determining the oxygen transfer coefficient, so as to solve the problem of poor applicability of the testing devices in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for determining the oxygen transfer coefficient, comprising a reaction vessel and a dissolved oxygen meter disposed within the reaction vessel, and further comprising a clear water tank, a sewage tank, a deoxidizer tank, a catalyst tank, a level gauge, a thermostat, and a timer. The reaction vessel is connected to the clear water tank, the sewage tank, the deoxidizer tank, and the catalyst tank, respectively. The level gauge and the thermostat are disposed within the reaction vessel, and the level gauge and the thermostat are located at the top and bottom of the reaction vessel, respectively. The timer is signal-connected to the thermostat.

[0006] In one embodiment of the present invention, a stirrer is further included, the stirrer comprising a drive component and a propeller, the drive component being fixed to the top surface of the reaction vessel, and the propeller being located at the center of the reaction vessel.

[0007] The beneficial effects of the above embodiments are as follows: the stirrer can promote the uniform mixing of liquid in the reaction vessel, and the propeller is located in the center to avoid interference with equipment such as dissolved oxygen meter, thereby improving the accuracy of dissolved oxygen meter measurement.

[0008] In one embodiment of the present invention, an aeration head is further provided inside the reaction vessel, and the aeration head is located directly below the propeller.

[0009] The beneficial effects of the above embodiments are that the aeration head can provide sufficient oxygen to the reactor, and the aeration head is located directly below the propeller, which can generate more bubbles by utilizing the rotation of the stirrer, thereby further improving the stirring effect.

[0010] In one embodiment of the present invention, an air pump and an air flow meter are also included. The air pump is connected to the aeration head, and the air flow meter is provided at the connection between the air pump and the aeration head.

[0011] The beneficial effect of the above embodiments is that the air pump and the air flow meter work together to accurately control the air flow entering the reactor, thereby controlling the oxygen supply.

[0012] In one embodiment of the present invention, a reagent addition device is further included. The deoxidizer tank and the catalyst tank are respectively connected to the reaction vessel through a reagent addition device. The reagent addition device includes a control valve, a liquid flow meter and a reagent addition pump connected in sequence.

[0013] The beneficial effects of the above embodiments are as follows: the reagent addition device includes a control valve, a liquid flow meter and a reagent addition pump, which can realize the precise addition of reagents such as deoxidizers and catalysts, improve the accuracy and repeatability of experiments, and reduce errors caused by manual operation.

[0014] In one embodiment of this utility model, the outlet of the clear water tank and the outlet of the sewage tank are connected, and are connected to the reaction vessel through a peristaltic pump.

[0015] In one embodiment of the present invention, the reactor is provided with a water outlet valve and a gas outlet valve. The water outlet valve is located near the bottom of the reactor on the side wall of the reactor, and the gas outlet valve is located near the top of the reactor on the side wall of the reactor.

[0016] The beneficial effects of the above embodiments are that the water outlet valve and the gas outlet valve can conveniently control the discharge of liquid and gas in the reactor, ensuring safety and environmental protection during the experiment.

[0017] To achieve the above objectives, the present invention also adopts the following technical solution: a system for measuring the oxygen transfer coefficient, the system comprising a server and the device for measuring the oxygen transfer coefficient as described above.

[0018] As described above, the device and system for determining the oxygen transfer coefficient of this utility model have the following beneficial effects: According to the experimental requirements, a certain amount of liquid or solution is added to the reaction vessel from the clear water tank, sewage tank, deoxidizer tank, and catalyst tank. The volume and temperature of the liquid in the reaction vessel are precisely controlled by the level gauge and thermostat, respectively. The dissolved oxygen meter installed in the reaction vessel is used to determine and calculate the oxygen transfer coefficient, which reduces the influence of volume and temperature fluctuations on the determination of the oxygen transfer coefficient, avoids experimental errors caused by changes in liquid level and temperature, and ensures that it can accurately measure the dissolved oxygen content in the liquid in the reaction vessel. In addition, it can also prevent accidents caused by abnormal liquid level and temperature and unnecessary waste, and has strong applicability and practicality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the device and system for determining the oxygen transfer coefficient provided by this utility model.

[0021] Component designation explanation

[0022] 1. Reactor; 11. Propeller

[0023] 2 Dissolved oxygen meter, 12 aeration heads

[0024] 3 Clear water tanks 13 Air pumps

[0025] 4. Wastewater tank; 14. Air flow meter

[0026] 5 Deoxidizer Tank 15 Control Valves

[0027] 6 Catalyst tank; 16 Liquid flow meter

[0028] 7. Level gauge; 17. Reagent dosing pump

[0029] 8 thermostats 18 peristaltic pumps

[0030] 9. Timer; 19. Water outlet valve

[0031] 10 Drive components 20 Exhaust valves Detailed Implementation

[0032] This invention provides an apparatus and system for determining the oxygen transfer coefficient. To make the purpose, technical solution and effects of this invention clearer and more explicit, the following describes this invention in further detail with reference to the accompanying drawings and examples.

[0033] In the description of this utility model, it should be understood that the terms "up, down, left, right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation," "connection," etc. should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Example 1:

[0035] Please see Figure 1 This invention provides a device for determining the oxygen transfer coefficient, comprising a reaction vessel 1 and a dissolved oxygen meter 2 disposed within the reaction vessel 1, and further comprising a clear water tank 3, a wastewater tank 4, a deoxidizer tank 5, a catalyst tank 6, a level gauge 7, a thermostat 8, and a timer 9. The reaction vessel 1 is connected to the clear water tank 3, the wastewater tank 4, the deoxidizer tank 5, and the catalyst tank 6 respectively. The level gauge 7 and the thermostat 8 are disposed within the reaction vessel 1. The level gauge 7 is installed at the top of the reaction vessel 1 to monitor the liquid level, while the thermostat 8 is installed at the bottom to ensure temperature stability during the reaction process. The timer 9 is connected to the thermostat 8 to synchronize time and temperature control.

[0036] In further optimization, a stirrer was added to the device. This stirrer consists of a drive unit 10 and a propeller 11 located at the center of the reaction vessel 1 to promote uniform mixing of the solution. Simultaneously, the propeller 11's central location avoids interference with the dissolved oxygen meter 2's measurements, ensuring data accuracy. Furthermore, an aeration head 12 is installed inside the reaction vessel 1, located directly below the propeller 11. Oxygen supply is precisely controlled by an air pump 13 and an air flow meter 14, and the rotation of the stirrer generates more bubbles, enhancing the mixing effect. Optionally, the drive unit 10 is a brushless motor.

[0037] To ensure precise addition of the deoxidizer and catalyst, the apparatus is also equipped with a reagent addition device. The deoxidizer tank 5 and the catalyst tank 6 are each connected to the reaction vessel 1 via this reagent addition device. The reagent addition device includes a control valve 15, a liquid flow meter 16, and a reagent addition pump 17 connected in sequence, enabling quantitative addition of reagents and improving the accuracy and repeatability of the experiment.

[0038] Please see Figure 1The outlets of the clear water tank 3 and the sewage tank 4 are connected to the reaction vessel 1 via a common peristaltic pump 18, enabling flexible control of the water flow. Meanwhile, the reaction vessel 1 is equipped with a water outlet valve 19 and a gas outlet valve 20 located on the bottom and top side walls of the reaction vessel 1, respectively. More specifically, the water outlet valve 19 is located near the bottom of the reaction vessel 1 on its side wall, and the gas outlet valve 20 is located near the top of the reaction vessel 1 on its side wall, facilitating the safe and environmentally friendly discharge of liquids and gases.

[0039] Example 2:

[0040] This invention also proposes a system for determining the oxygen transfer coefficient. This system integrates the aforementioned device and server, enabling centralized data processing and analysis, and providing a more convenient and efficient solution for scientific research and production.

[0041] In summary, the device and system for determining the oxygen transfer coefficient of this invention, according to experimental requirements, adds a certain amount of liquid or solution from the clear water tank 3, sewage tank 4, deoxidizer tank 5, and catalyst tank 6 into the reaction vessel 1. The liquid level gauge 7 and thermostat 8 precisely control the volume and temperature of the liquid in the reaction vessel 1, respectively. The dissolved oxygen meter 2 installed in the reaction vessel 1 measures and calculates the oxygen transfer coefficient. This reduces the impact of volume and temperature fluctuations on the oxygen transfer coefficient measurement, avoids experimental errors caused by changes in liquid level and temperature, and ensures accurate measurement of the dissolved oxygen content in the liquid in the reaction vessel 1. Furthermore, it eliminates accidents caused by abnormal liquid level and temperature, as well as unnecessary waste, and has strong applicability and practicality. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0042] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. An apparatus for determining the oxygen transfer coefficient, comprising a reaction vessel and a dissolved oxygen meter disposed within the reaction vessel, characterized in that: It also includes a clear water tank, a sewage tank, a deoxidizer tank, a catalyst tank, a level gauge, a thermostat, and a timer. The reactor is connected to the clear water tank, the sewage tank, the deoxidizer tank, and the catalyst tank, respectively. The level gauge and the thermostat are installed inside the reactor. The level gauge and the thermostat are located at the top and bottom of the reactor, respectively. The timer is signal-connected to the thermostat.

2. The apparatus for determining the oxygen transfer coefficient according to claim 1, characterized in that, It also includes a stirrer, which includes a drive unit and a propeller. The drive unit is fixed to the top surface of the reactor, and the propeller is located at the center of the reactor.

3. The apparatus for determining the oxygen transfer coefficient according to claim 2, characterized in that, It also includes an aeration head installed inside the reactor, which is located directly below the propeller.

4. The apparatus for determining the oxygen transfer coefficient according to claim 3, characterized in that, It also includes an air pump and an air flow meter, wherein the air pump is connected to the aeration head, and the air flow meter is installed at the connection between the air pump and the aeration head.

5. The apparatus for determining the oxygen transfer coefficient according to claim 1, characterized in that, It also includes a reagent addition device, wherein the deoxidizer tank and the catalyst tank are respectively connected to the reaction vessel through a reagent addition device, and the reagent addition device includes a control valve, a liquid flow meter and a reagent addition pump connected in sequence.

6. The apparatus for determining the oxygen transfer coefficient according to claim 1, characterized in that, The outlet of the clear water tank is connected to the outlet of the sewage tank, and is connected to the reaction vessel via a peristaltic pump.

7. The apparatus for determining the oxygen transfer coefficient according to claim 1, characterized in that, The reactor is equipped with a water outlet valve and a gas outlet valve. The water outlet valve is located near the bottom of the reactor on the side wall of the reactor, and the gas outlet valve is located near the top of the reactor on the side wall of the reactor.

8. A system for determining the oxygen transfer coefficient, characterized in that: The system includes a server and an apparatus for determining the oxygen transfer coefficient as described in any one of claims 1-7.

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