Device and method for eliminating residual ozone in detection water sample

Abstract

The invention discloses a device and method for eliminating residual ozone in a detection water sample, and the device comprises a reactor which is internally provided with a containing cavity and has a light-permeable side wall; the heating part is arranged on the reactor and is used for heating and preserving heat of the water sample in the residual ozone removal process; the temperature control component is arranged on the outer side of the reactor and is electrically connected with the heating component, and is used for controlling the heating component to heat and preserve heat of the water sample and then controlling the heating component to be disconnected; the light source is arranged on the outer side of the reactor and irradiates the water sample while the water sample is heated; the air outlet end of the air blowing part is communicated with the containing cavity, the water sample is heated and irradiated, air blowing is carried out on the water sample according to the set ventilation volume, and after heat preservation is finished, the heating part and the light source are closed, and the air blowing part continues to carry out air blowing. The residual ozone in the water is removed, the original water quality characteristics of the water sample are completely reserved, the original water quality of the water sample is not influenced, and the residual ozone value and other water quality indexes such as organic matters in the water can be accurately detected by adopting spectral analysis.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 202411077268.5, entitled "Apparatus and Method for Detecting Residual Ozone in Water Based on Ultraviolet Spectroscopy Peeling and Colorimetric Method", the contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of chromatographic detection technology, and in particular to an apparatus and method for eliminating residual ozone in water samples. Background Technology

[0003] With rapid economic development and rising incomes, people are placing increasing demands on the environment and their own health. This is reflected in the quality of drinking water, an essential part of daily life, leading to reasonable requirements and the adoption of more advanced production processes. For example, many water treatment companies, producing drinking water, direct drinking water, food, and pharmaceuticals, have added advanced treatment processes to their existing production lines, including the addition of ozone. This creates residual ozone in the water, which not only disinfects but also degrades organic matter and color.

[0004] These water purification processes also involve water quality indicator testing. The presence of residual ozone in the water can interfere with certain tests, directly affecting the results of other indicators besides ozone. This invention addresses these technical problems. Summary of the Invention

[0005] In order to solve at least one of the technical problems in the background art of this invention, this invention provides an apparatus and method for eliminating residual ozone in a water sample, thereby eliminating residual ozone interference in the water sample through physical means, and achieving accurate measurement of residual ozone value and other indicators such as organic matter in the water.

[0006] The technical solution of the present invention is as follows: One objective of the present invention is to provide a device for eliminating residual ozone in a water sample, comprising:

[0007] A reactor having a cavity for holding a water sample to be removed from residual ozone, and the sidewalls of the reactor being transmissible to light.

[0008] A heating element, which is installed on the reactor, heats and keeps the water sample in the reactor warm during the residual ozone removal process;

[0009] A temperature control component is located on the outside of the reactor and electrically connected to the heating component. During the residual ozone removal process, the heating component controls the heating and heat preservation of the water sample in the reactor, and controls the heating component to disconnect after completion.

[0010] A light source is located outside the reactor and illuminates the water sample inside the reactor while the water sample is being heated.

[0011] The aeration component has its outlet connected to the receiving cavity. While the water sample is being heated and irradiated, it aerates the water sample into the receiving cavity according to a set aeration rate. After the heat preservation is completed, the heating component and the light source are turned off, and the aeration component continues to aerate.

[0012] Preferably, the heating element maintains the temperature at a set temperature for a first set time.

[0013] Preferably, the set temperature is 40°C.

[0014] Preferably, the first set duration is 2 minutes.

[0015] Preferably, the duration for which the air-blowing component continues to blow air is a second preset duration, which is less than the first preset duration.

[0016] Preferably, the sum of the second set duration and the first set duration is no greater than 3 minutes.

[0017] Preferably, the second set duration is 30 seconds.

[0018] Preferably, the set ventilation rate is 60 revolutions per minute.

[0019] Preferably, the light source is a halogen tungsten lamp.

[0020] Another object of the present invention is to provide a method for eliminating residual ozone in a water sample, comprising the following steps:

[0021] Add the water sample to be de-ozoned into the reactor;

[0022] The heating element heats and maintains the water sample in the reactor at 40°C under the control of the temperature control element for 2 minutes.

[0023] While the heating element heats and keeps the water warm, the light source is turned on to irradiate the water sample inside the reactor, and the aeration element is turned on to blow air into the water sample in the reactor's containment cavity at a rate of 60 revolutions per minute.

[0024] After the heat preservation is completed, turn off the heating components and the light source, but do not turn off the aeration components. Continue to aerate the water sample in the reactor's containment cavity for 30 seconds.

[0025] Close the air blower component.

[0026] The beneficial effects of this invention are:

[0027] The apparatus and method for eliminating residual ozone in water samples of the present invention utilize the unstable nature of residual ozone in water. Through physical means such as constant temperature, exposure, and aeration, residual ozone in water samples is separated from other water quality components. This achieves the removal of residual ozone while completely preserving the original water quality characteristics of the water sample, without affecting the original water quality (except for residual ozone). Spectroscopic analysis can be used to accurately detect residual ozone levels and other water quality indicators, such as organic matter. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the device for eliminating residual ozone in a water sample according to an embodiment of the present invention;

[0029] Figure 2 The spectrum of a water sample containing residual ozone detected by the apparatus and method for eliminating residual ozone in a water sample according to an embodiment of the present invention;

[0030] Figure 3 The spectrum of a water sample de-ozoned, as detected by the apparatus and method for eliminating residual ozone in water according to an embodiment of the present invention.

[0031] In the diagram: 10. Device for eliminating residual ozone in water samples; 11. Reactor; 12. Heating component; 13. Temperature control component; 14. Light source; 15. Aeration component; 20. Water sample containing residual ozone. Detailed Implementation

[0032] The following examples further illustrate the present invention in detail. It should also be understood that the following examples are only for further explanation of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made by those skilled in the art based on the principles described herein fall within the scope of protection of the present invention. The specific process parameters, etc., in the following examples are merely examples within a suitable range; that is, those skilled in the art can make selections within a suitable range based on the description herein, and are not intended to be limited to the specific data in the examples below.

[0033] The apparatus and method for eliminating residual ozone in water samples provided in this invention have led the applicant to discover that, in order to detect other water quality indicators such as the content of organic matter in water samples containing residual ozone, the ozone-containing water sample can be directly measured using ultraviolet spectroscopy colorimetry, and the measurement results (spectral diagram) are as follows. Figure 2 As shown, there are many interfering terms, making it impossible to accurately determine the concentration of residual ozone and other water quality indicators, such as organic matter, in the water sample. In other words, directly using ultraviolet spectroscopy for colorimetric determination will affect the accuracy of the measurement results.

[0034] This invention utilizes physical means to remove residual ozone from the water sample to be tested, resulting in a water sample that differs from the original sample only in that it lacks residual ozone. Ultraviolet (UV) spectroscopy is then used for colorimetric determination to accurately measure other indicators in the water sample, such as the content of organic matter. This solves the problem of inaccurate measurement results caused by the similarity in absorption wavelengths between interfering factors such as organic matter and residual ozone in the water sample. The UV spectroscopy results of the water sample after removing residual ozone are as follows: Figure 3 As shown.

[0035] In the method of this invention embodiment, a device 10 for eliminating residual ozone in the water sample is needed to completely remove residual ozone from the water sample 20 containing residual ozone while preserving the original water quality characteristics (i.e., the water quality characteristics in the 200-800nm ​​range mentioned above). This is achieved by rapidly heating the water to 40°C (generally around 3 minutes). Through repeated experimental design, the applicant has developed a device 10 for eliminating residual ozone in the water sample. This device uses heating / holding at 40°C combined with physical methods such as exposure and aeration. This not only eliminates residual ozone in the water but also does not affect the original water quality characteristics of the original water sample. In other words, the device 10 for eliminating residual ozone in the water sample, by controlling heating / holding, exposure, and aeration, removes only residual ozone without altering substances other than residual ozone in the water sample, thereby preserving the original water quality characteristics to the maximum extent and improving the accuracy of water quality index measurements using spectroscopic methods.

[0036] More specifically, in order to achieve the above objectives, the specific structure and working process of the device 10 for eliminating residual ozone in water samples according to embodiments of the present invention are as follows:

[0037] like Figure 1 As shown, the device 10 for eliminating residual ozone in a water sample according to an embodiment of the present invention includes a cylindrical reactor 11 with an internal cavity. In this embodiment, the reactor 11 is light-transmitting so that it can receive light irradiated by the light source 14 during the residual ozone elimination process. Figure 1As shown, a heating element 12 (exemplary, optionally a conventional resistance wire heating device wound around the circumference of the outer wall of the reactor 11) is also provided on the outer wall of the reactor 11. The heating element 12 is used to heat and maintain the temperature of the reactor 11, so as to heat and maintain the temperature of the water sample to be removed from the cavity of the reactor 11. The temperature control element 13 is electrically connected to the heating element 12 and is also located on the outside of the reactor 11. The temperature control element 13 is used to control and set the heating and / or maintenance temperature of the heating element 12, and to control the heating element 12 to maintain the temperature and / or maintenance time after heating to the set temperature and / or time, and / or to disconnect after reaching the set time. Specifically, the temperature control device is implemented by using a single-chip microprocessor control, PT resistance temperature measurement, and PWM control method based on PID self-control technology. It can be a conventional intelligent digital display temperature controller available on the market. The light source 14 is located on the outside of the reactor 11 and is used to emit the required light and the duration of light into the cavity of the reactor 11. Optionally, the light source 14 can be a halogen tungsten lamp (12V / 10W). The outlet of the air-blowing component 15 is connected to the cavity. The air-blowing component 15 can be a conventional air-blowing device that can blow gas (air or inert gas such as nitrogen) into a liquid, such as a peristaltic pump (16# pump tube). More specifically, the working process of the device 10 for eliminating residual ozone in the water sample 20 of the present invention is as follows: First, add enough water sample containing residual ozone (≤20ml) to the reactor 11; then, the heating component 12 heats and keeps the water sample in the reactor 11 at 40°C (corresponding to the set temperature) under the control of the temperature control component 13, wherein the holding time is preferably 2min (corresponding to the first set time). The heating temperature can be determined according to the environment (for example, different temperature ranges are set according to winter and summer or according to geographical location such as plateau or plain). It is sufficient to keep the water temperature at 40°C within the holding time range. While the heating component 12 is heating, the light source 14 is turned on to irradiate the water sample in the reactor 11, and the aeration component 15 is turned on to blow air into the water sample in the cavity of the reactor 11 at a ventilation rate of 60 rpm. After the heat preservation is completed, turn off the heating element 12 and the light source 14. At this time, do not turn off the aeration element 15. Continue to aerate the water sample in the containment cavity of the reactor 11 for 30 seconds (the second set time). Finally, turn off the aeration element 15. At this time, the water sample in the containment cavity of the reactor 11 is the ozone-free water sample that has completely removed residual ozone but still retains the original water quality characteristics. The results of ultraviolet spectroscopy colorimetric determination are as follows: Figure 3 As shown.

[0038] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A device for eliminating residual ozone in a water sample, characterized in that, include: A reactor having a cavity for holding a water sample to be removed from residual ozone, and the sidewalls of the reactor being transmissible to light. A heating element, which is installed on the reactor, heats and keeps the water sample in the reactor warm during the residual ozone removal process; A temperature control component is located on the outside of the reactor and electrically connected to the heating component. During the residual ozone removal process, the heating component controls the heating and heat preservation of the water sample in the reactor, and controls the heating component to disconnect after completion. A light source is located outside the reactor and illuminates the water sample inside the reactor while the water sample is being heated. The aeration component has its outlet connected to the receiving cavity. While the water sample is being heated and irradiated, it aerates the water sample into the receiving cavity according to a set aeration rate. After the heat preservation is completed, the heating component and the light source are turned off, and the aeration component continues to aerate.

2. The apparatus according to claim 1, characterized in that, The heating element maintains the temperature at a set temperature for a first set time.

3. The apparatus according to claim 2, characterized in that, The set temperature is 40℃.

4. The apparatus according to claim 2, characterized in that, The first set duration is 2 minutes.

5. The apparatus according to claim 2, characterized in that, The duration for which the air-blowing component continues to blow air is a second preset duration, which is less than the first preset duration.

6. The apparatus according to claim 1, characterized in that, The sum of the second set duration and the first set duration shall not exceed 3 minutes.

7. The apparatus according to claim 1, characterized in that, The second set duration is 30 seconds.

8. The apparatus according to claim 1, characterized in that, The set ventilation rate is 60 revolutions per minute.

9. The apparatus according to claim 1, characterized in that, The light source is a halogen tungsten lamp.

10. A method for eliminating residual ozone in a water sample, characterized in that, Includes the following steps: Add the water sample to be de-ozoned into the reactor; The heating element heats and maintains the water sample in the reactor at 40°C under the control of the temperature control element for 2 minutes. While the heating element heats and keeps the water warm, the light source is turned on to irradiate the water sample inside the reactor, and the aeration element is turned on to blow air into the water sample in the reactor's containment cavity at a rate of 60 revolutions per minute. After the heat preservation is completed, turn off the heating components and the light source, but do not turn off the aeration components. Continue to aerate the water sample in the reactor's containment cavity for 30 seconds. Close the air blower component.

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