CN220455302U - Combined COD water quality on-line analyzer - Google Patents
Combined COD water quality on-line analyzer Download PDFInfo
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- CN220455302U CN220455302U CN202322076860.0U CN202322076860U CN220455302U CN 220455302 U CN220455302 U CN 220455302U CN 202322076860 U CN202322076860 U CN 202322076860U CN 220455302 U CN220455302 U CN 220455302U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 230000007246 mechanism Effects 0.000 claims abstract description 63
- 238000006243 chemical reaction Methods 0.000 claims abstract description 53
- 238000005070 sampling Methods 0.000 claims abstract description 30
- 238000004458 analytical method Methods 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 239000007795 chemical reaction product Substances 0.000 abstract description 4
- 239000007805 chemical reaction reactant Substances 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000007781 pre-processing Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000007853 buffer solution Substances 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000010979 pH adjustment Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- -1 suspended matters Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
Abstract
The utility model discloses a combined COD water quality online analyzer, which relates to the technical field of water measurement and comprises a sampling mechanism, wherein one side of the sampling mechanism is connected with a detection mechanism in a penetrating way, a reaction mechanism is arranged on the detection mechanism, and the sampling mechanism comprises a water sample pretreatment device; the reaction mechanism comprises a reaction tank; the detection mechanism comprises a chromatograph. According to the utility model, the collected water sample is preprocessed through the sampling mechanism water sample preprocessing device, suspended matters in the water sample can be filtered or precipitated through a method of using a filter membrane, a filter or a precipitation method and the like, the collected water sample is fully mixed in the reaction tank through the stirring device, so that a representative sample is provided for COD analysis, an electrochemical sensor and a chromatograph are used for detecting chemical changes or optical characteristics generated after COD analysis reaction, and the chromatograph is used for detecting concentration changes of COD reaction products or reactants.
Description
Technical Field
The utility model relates to the technical field of water measurement, in particular to a combined COD water quality on-line analyzer.
Background
Chemical Oxygen Demand (COD) in a water body, a conventional COD analysis method requires a long analysis time, usually several hours or more, and COD analysis requires manual operations including sample collection, reagent addition, reaction time control, etc., is easily affected by the level of skill of an operator and subjective factors, may have a certain error and uncertainty, depends on manual operations and observations, and requires a large amount of reagents and time-consuming and labor-consuming operation steps, resulting in a large amount of waste liquid and waste.
Therefore, a combined analysis system based on a chemical method and an optical technology is provided, and the combined COD water quality on-line analyzer can monitor the COD content in a water sample in real time.
Disclosure of Invention
In order to solve the technical problems, the utility model adopts the following technical scheme:
the combined COD water quality online analyzer comprises a sampling mechanism, wherein one side of the sampling mechanism is connected with a detection mechanism in a penetrating way, a reaction mechanism is arranged on the detection mechanism, and the sampling mechanism comprises a water sample pretreatment device; the reaction mechanism comprises a reaction tank; the detection mechanism comprises a chromatograph.
The technical scheme of the utility model is further improved as follows: the water inlet is formed in one side of the top of the water sample pretreatment device, one end of the water sample pretreatment device is connected with a water pump in a penetrating mode, and one end of the water pump is connected with an output pipe in a penetrating mode.
The technical scheme of the utility model is further improved as follows: the sampling mechanism is connected with the detection mechanism through an output pipe.
The technical scheme of the utility model is further improved as follows: stirring blades are arranged in the reaction tank, a motor is arranged at the top of the stirring blades in a driving mode, and a reagent input pipe is connected to the top of the reaction tank in a penetrating mode.
The technical scheme of the utility model is further improved as follows: the stirring blade and the motor form a stirring device to mix water sample clamp block organic matters for oxidation reaction.
The technical scheme of the utility model is further improved as follows: the detection mechanism also comprises an electrochemical sensor.
The technical scheme of the utility model is further improved as follows: the electrochemical sensor and the chromatograph are used for measuring chemical changes or optical characteristics generated after the water sample reacts.
By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:
1. the utility model provides a combined COD water quality on-line analyzer, which is characterized in that sample water is added into a sampling mechanism through a water inlet and is introduced into a detection mechanism through an output pipe of the sampling mechanism, and a water sample pretreatment device of the sampling mechanism plays an important role in a sampling system of the combined COD water quality on-line analyzer. The main purpose of the method is to pretreat the collected water sample to ensure the accuracy and reliability of analysis results, and impurity substances such as suspended matters, solid particles or biological particles may exist in the water sample. These impurities may interfere with or clog the reaction system of the COD analyzer, affecting the accuracy of the analysis results. The water sample pretreatment device can filter or precipitate suspended matters in the water sample by using a filter membrane, a filter or a precipitation method and the like, so that a clear water sample is obtained for subsequent analysis, and the pretreated water sample is input into the detection mechanism through the output pipe by the water pump.
2. The utility model provides a combined type COD water quality online analyzer, wherein a stirring device is formed by a stirring blade and a motor, the COD content of a water sample is possibly unevenly distributed in the whole sample, and a representative sample is required to be obtained through thorough mixing. The stirring device ensures that the collected water sample is fully mixed in the reaction tank so as to provide a representative sample for COD analysis, and the COD analysis has strict requirements on the pH value of the water sample and is generally carried out in a specific range. The reaction tank can be used for adjusting the pH value of a water sample by adding acid, alkali or buffer solution into a reagent input pipe, so that the water sample is suitable for COD analysis reaction, and the pH adjustment can improve the efficiency and accuracy of the COD reaction.
3. The utility model provides a combined COD water quality on-line analyzer, which is used for detecting chemical changes or optical characteristics generated after COD analysis reaction by an electrochemical sensor and a chromatograph, providing signals or data related to COD content, and can be used for separating and quantitatively analyzing complex chemical substances. In the COD water quality on-line analyzer, a chromatograph may be used to detect the change in concentration of COD reaction products or reactants. The chromatograph uses an optical or electrical signal detector to quantify the concentration of the compound of interest by separating the different components in the sample. For COD analysis, a chromatograph can infer the COD content by monitoring the concentration change of a specific compound generated after the reaction of an organic matter, and an electrochemical sensor is used to detect the concentration of a chemical substance in a solution or a specific electrochemical reaction. In the combined COD water quality online analyzer, an electrochemical sensor is commonly used for detecting potential change in the COD reaction process. Depending on the nature of the chemical reaction, the COD reaction causes potential changes that can be monitored in real time by an electrochemical sensor and converted into an electrical signal related to the COD content. Thus, the concentration value of COD in the water sample can be directly obtained, and real-time on-line monitoring is realized.
Drawings
FIG. 1 is a schematic structural diagram of a combined COD water quality on-line analyzer of the utility model;
FIG. 2 is a schematic diagram of a sampling mechanism according to the present utility model;
FIG. 3 is a schematic structural view of the reaction mechanism of the present utility model;
fig. 4 is a schematic structural view of the detection mechanism of the present utility model.
In the figure: 1. a sampling mechanism; 2. a reaction mechanism; 3. a detection mechanism; 11. a water inlet; 12. a water sample pretreatment device; 13. an output pipe; 14. a water pump; 21. a reaction tank; 22. stirring blades; 23. a motor; 24. a reagent input tube; 32. a chromatograph; 33. an electrochemical sensor.
Detailed Description
The utility model is further illustrated by the following examples:
example 1
As shown in fig. 1-4, the utility model provides a combined type COD water quality online analyzer, which comprises a sampling mechanism 1, wherein one side of the sampling mechanism 1 is in through connection with a detection mechanism 3, and a reaction mechanism 2 is arranged on the detection mechanism 3.
Example 2
As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the sampling mechanism 1 comprises a water sample pretreatment device 12, a water inlet 11 is formed in one side of the top of the water sample pretreatment device 12, one end of the water sample pretreatment device 12 is in through connection with a water pump 14, one end of the water pump 14 is in through connection with an output pipe 13, and the sampling mechanism 1 is in through connection with the detection mechanism 3 through the output pipe 13.
In the embodiment, the sample water is added into the sampling mechanism 1 through the water inlet 11 and is introduced into the detection mechanism 3 through the output pipe 13 of the sampling mechanism 1, and the water sample pretreatment device 12 of the sampling mechanism 1 plays an important role in a sampling system of the combined COD water quality on-line analyzer. The main purpose of the method is to pretreat the collected water sample to ensure the accuracy and reliability of analysis results, and impurity substances such as suspended matters, solid particles or biological particles may exist in the water sample. These impurities may interfere with or clog the reaction system of the COD analyzer, affecting the accuracy of the analysis results. The water sample pretreatment device can filter or precipitate suspended matters in the water sample by using a filter membrane, a filter or a precipitation method and the like, so as to obtain a clear water sample for subsequent analysis, and the clear water sample is input into the detection mechanism 3 through the output pipe 13 after pretreatment by the water pump 14.
Example 3
As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the reaction mechanism 2 comprises a reaction tank 21, a stirring blade 22 is arranged in the reaction tank 21, a motor 23 is arranged at the top of the stirring blade 22 in a driving way, a reagent input pipe 24 is connected at the top of the reaction tank 21 in a penetrating way, and the stirring blade 22 and the motor 23 form a stirring device to mix water sample clamping block organic matters for oxidation reaction.
In this embodiment, the stirring blade 22 and the motor 23 form a stirring device, and the COD content of the water sample may not be uniformly distributed in the whole sample, and a representative sample needs to be obtained by thorough mixing. The stirring means ensures that the collected water sample is thoroughly mixed in the reaction tank 21 to provide a representative sample for COD analysis, which is critical to the pH of the water sample and generally is carried out within a specific range. The reaction tank 21 can adjust the pH value of the water sample by adding acid, alkali or buffer solution into the reagent input pipe 24, so that the water sample is suitable for COD analysis reaction, and the pH adjustment can improve the efficiency and accuracy of the COD reaction.
Example 4
As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the detection mechanism 3 comprises a chromatograph 32, and the detection mechanism 3 further comprises an electrochemical sensor 33, wherein the electrochemical sensor 33 and the chromatograph 32 are used for measuring chemical changes or optical characteristics generated after the water sample reacts.
In this embodiment, the electrochemical sensor 33 and the chromatograph 32 are used to detect chemical changes or optical characteristics generated after the COD analysis reaction, provide signals or data related to the COD content, and the chromatograph 32 can be used to separate and quantitatively analyze complex chemicals. In the COD water quality on-line analyzer, the chromatograph 32 may be used to detect changes in the concentration of COD reaction products or reactants. Chromatograph 32 uses an optical or electrical signal detector to quantify the concentration of the compound of interest by separating the different components in the sample. For COD analysis, the chromatograph 32 can estimate the COD content by monitoring the concentration change of a specific compound generated after the reaction of an organic matter, and the electrochemical sensor 33 is used to detect the concentration of a chemical substance in a solution or a specific electrochemical reaction. In the combined COD water quality online analyzer, the electrochemical sensor 33 is commonly used to detect the potential change during COD reaction. Depending on the nature of the chemical reaction, the COD reaction causes potential changes that can be monitored in real time by an electrochemical sensor and converted into an electrical signal related to the COD content. Thus, the concentration value of COD in the water sample can be directly obtained, and real-time on-line monitoring is realized.
The working principle of the combined COD water quality on-line analyzer is specifically described below.
As shown in fig. 1 to 4, sample water is added into the sampling mechanism 1 through the water inlet 11 and is introduced into the detection mechanism 3 through the output pipe 13 of the sampling mechanism 1, and the water sample pretreatment device 12 of the sampling mechanism 1 plays an important role in the sampling system of the combined type COD water quality on-line analyzer. The main purpose of the method is to pretreat the collected water sample to ensure the accuracy and reliability of analysis results, and impurity substances such as suspended matters, solid particles or biological particles may exist in the water sample. These impurities may interfere with or clog the reaction system of the COD analyzer, affecting the accuracy of the analysis results. The water sample pretreatment device can filter or precipitate suspended matters in the water sample by using a filter membrane, a filter or a precipitation method and the like, so that a clear water sample is obtained for subsequent analysis, the pretreated water sample is input into the detection mechanism 3 through the output pipe 13 by the water pump 14, the stirring blades 22 and the motor 23 form a stirring device, the COD content of the water sample may be unevenly distributed in the whole sample, and a representative sample needs to be obtained through full mixing. The stirring means ensures that the collected water sample is thoroughly mixed in the reaction tank 21 to provide a representative sample for COD analysis, which is critical to the pH of the water sample and generally is carried out within a specific range. The reaction tank 21 can adjust the pH value of the water sample by adding acid, alkali or buffer solution into the reagent input pipe 24, so that the water sample is suitable for COD analysis reaction, the pH adjustment can improve the efficiency and accuracy of the COD reaction, the electrochemical sensor 33 and the chromatograph 32 are used for detecting chemical changes or optical characteristics generated after the COD analysis reaction, signals or data related to the COD content are provided, and the chromatograph 32 can be used for separating and quantitatively analyzing complex chemical substances. In the COD water quality on-line analyzer, the chromatograph 32 may be used to detect changes in the concentration of COD reaction products or reactants. Chromatograph 32 uses an optical or electrical signal detector to quantify the concentration of the compound of interest by separating the different components in the sample. For COD analysis, the chromatograph 32 can estimate the COD content by monitoring the concentration change of a specific compound generated after the reaction of an organic matter, and the electrochemical sensor 33 is used to detect the concentration of a chemical substance in a solution or a specific electrochemical reaction. In the combined COD water quality online analyzer, the electrochemical sensor 33 is commonly used to detect the potential change during COD reaction. Depending on the nature of the chemical reaction, the COD reaction causes potential changes that can be monitored in real time by an electrochemical sensor and converted into an electrical signal related to the COD content. Thus, the concentration value of COD in the water sample can be directly obtained, and real-time on-line monitoring is realized.
The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.
Claims (7)
1. The utility model provides a combination formula COD quality of water on-line analysis appearance, includes sampling mechanism (1), its characterized in that: one side of the sampling mechanism (1) is connected with a detection mechanism (3) in a penetrating way, a reaction mechanism (2) is arranged on the detection mechanism (3), and the sampling mechanism (1) comprises a water sample pretreatment device (12); the reaction mechanism (2) comprises a reaction tank (21); the detection mechanism (3) comprises a chromatograph (32).
2. The combined type online COD water quality analyzer according to claim 1, wherein: the water sample pretreatment device is characterized in that a water inlet (11) is formed in one side of the top of the water sample pretreatment device (12), one end of the water sample pretreatment device (12) is in through connection with a water pump (14), and one end of the water pump (14) is in through connection with an output pipe (13).
3. The combined type online COD water quality analyzer according to claim 2, wherein: the sampling mechanism (1) is communicated with the detection mechanism (3) through an output pipe (13).
4. The combined type online COD water quality analyzer according to claim 1, wherein: stirring blades (22) are arranged in the reaction tank (21), a motor (23) is arranged on the top of the stirring blades (22) in a driving mode, and a reagent input pipe (24) is connected to the top of the reaction tank (21) in a penetrating mode.
5. The combined type online COD water quality analyzer according to claim 4, wherein: the stirring blade (22) and the motor (23) form a stirring device to mix water sample clamp block organic matters for oxidation reaction.
6. The combined type online COD water quality analyzer according to claim 1, wherein: the detection mechanism (3) further comprises an electrochemical sensor (33).
7. The combined type online COD water quality analyzer according to claim 6, wherein: the electrochemical sensor (33) and the chromatograph (32) are used for measuring chemical changes or optical characteristics generated after the water sample reacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322076860.0U CN220455302U (en) | 2023-08-03 | 2023-08-03 | Combined COD water quality on-line analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322076860.0U CN220455302U (en) | 2023-08-03 | 2023-08-03 | Combined COD water quality on-line analyzer |
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| Publication Number | Publication Date |
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| CN220455302U true CN220455302U (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322076860.0U Active CN220455302U (en) | 2023-08-03 | 2023-08-03 | Combined COD water quality on-line analyzer |
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| CN (1) | CN220455302U (en) |
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2023
- 2023-08-03 CN CN202322076860.0U patent/CN220455302U/en active Active
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