CN208283282U - COD detection device - Google Patents
COD detection device Download PDFInfo
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- CN208283282U CN208283282U CN201820809310.1U CN201820809310U CN208283282U CN 208283282 U CN208283282 U CN 208283282U CN 201820809310 U CN201820809310 U CN 201820809310U CN 208283282 U CN208283282 U CN 208283282U
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- reaction tank
- pipeline
- cod
- detection device
- pipe
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- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
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Abstract
A kind of COD detection device includes: reaction tank；Detection cell；The first pipe in the reaction tank is protruded into outside the reaction tank, the first pipe connects ozone generating-device；The second pipe being connected between the reaction tank and the detection cell has gas flow control valve on the second pipe；The third pipeline of the detection cell is connected, the third pipeline is discharged from the detection cell for liquid；The 4th pipeline in the reaction tank is protruded into outside the reaction tank, the 4th pipeline connection luminol solution provides device；The 5th pipeline in the reaction tank is protruded into outside the reaction tank, the 5th pipeline connects air extractor.The COD detection device, which can be realized, detects COD using ozone and luminol solution.
Description
Technical field
The utility model relates to field of gas detection more particularly to a kind of COD, (Chemical Oxygen Demand changes
Learn oxygen demand) detection device.
Background technique
COD is the most important index of water pollution.COD refers under certain conditions, by 1L water sample, goes back
Immunogenic substance aoxidizes the amount of consumed oxidant, and result is converted to the content of oxygen.
COD is the measurement to the organic matter and inorganic oxide concentration that contain in water, reflects the contaminated degree of water body,
It is one of the important indicator for evaluating water body quality.Reducing substances include various organic matters, ferrous iron, nitrous acid, sulfide in water
Deng.Water body by organic pollution be it is very universal, COD can consume the oxygen being dissolved in water body excessively, cause water body rich
Nutrient laden brings adverse effect to aquatic organism such as fish, algae etc., therefore COD is as the current important finger for measuring water quality condition
One of mark.
The measurement method of COD mainly has chemical method and two kinds of physical method at present.Chemical method is will be in water sample with strong oxidizer
Reducing substances oxidation, then calculate the consumption of oxidant, be finally converted to the amount of consumption oxygen, obtain COD.
Utility model content
The utility model solves the problems, such as to be to provide a kind of COD detection device, using realize using ozone as oxidant come
Detect COD.
To solve the above problems, the utility model provides a kind of COD detection device, comprising: reaction tank；Detection cell；From
The first pipe in the reaction tank is protruded into outside the reaction tank, the first pipe connects ozone generating-device；It is connected to
Second pipe between the reaction tank and the detection cell has valve on the second pipe；Outside the reaction tank
The third pipeline in the reaction tank is protruded into, the third pipeline is discharged from the detection cell for liquid；From the reaction
The 4th pipeline in the reaction tank is protruded into outside pond, the 4th pipeline connection luminol solution provides device；From described anti-
The 5th pipeline in the reaction tank is protruded into outside Ying Chi, the 5th pipeline connects air extractor.
Optionally, the reaction tank has Chi Gai.
Optionally, the COD detection device further includes the ultraviolet lamp below the pond lid.
Optionally, the COD detection device further includes the 6th pipe protruded into the reaction tank outside the reaction tank
Road, the 6th pipeline connect NaHCO3 solution supply device.
Optionally, there is flow control valve on the 4th pipeline；There is flow control on the 5th pipeline
Valve；There is flow control valve on the 6th pipeline.
Optionally, the side of the detection cell has light supply apparatus, and the other side has light intensity test device, the light source dress
It sets and is connected to control device with light intensity test device.
Optionally, one end of the second pipe is connected to the reaction bottom of pond portion, and the other end is connected to the detection cell
Top.
Optionally, there is agitating device in the reaction tank.
Optionally, the pond is covered with cooling device.
Optionally, the junction of the detection cell and the third pipeline has check valve, and the flow direction of the check valve is
It is flowed from the reaction tank to the third pipeline.
In the one aspect of technical solutions of the utility model, by setting reaction tank and detection cell, and protrude into anti-
First pipe in Ying Chi, the second pipe being connected between reaction tank and detection cell, the third pipeline in connecting detection pond, from anti-
The 4th pipeline in reaction tank is protruded into outside Ying Chi, and the 5th pipeline in reaction tank, also, the first pipe are protruded into outside reaction tank
Road connects ozone generating-device, has flow control valve valve on second pipe, third pipeline is for liquid from detection cell
Discharge, the 4th pipeline connect luminol solution and provide device, and the 5th pipeline connects air extractor, so that the COD is detected
Device can utilize the cooperation of ozone and luminol solution, realize the detection to COD.
Detailed description of the invention
Fig. 1 is COD detection device schematic diagram provided in an embodiment of the present invention.
Specific embodiment
More clearly to indicate, the utility model is described in detail with reference to the accompanying drawing.
The utility model embodiment provides a kind of COD detection device, please refers to Fig. 1.
The COD detection device includes reaction tank 120 and detection cell 130, and the COD detection device further includes from reaction tank
The first pipe 101 in reaction tank 120, the second pipe being connected between reaction tank 120 and detection cell 130 are protruded into outside 120
102, the third pipeline 103 in connecting detection pond 130 protrudes into the 4th pipeline 104 in reaction tank 120 outside reaction tank 120, with
And the 5th pipeline 105 in reaction tank 120 is protruded into outside reaction tank 120.Wherein, first pipe 101 connects ozone and fills
110 (first pipe 101 is extend into below the liquid level of reaction solution) are set, there is flow control valve valve on second pipe 102
1021, third pipeline 103 is discharged that (third pipeline 103 is not connected with one end of detection cell, can be with for liquid from detection cell 130
Corresponding suction unit is connected, to facilitate the discharge of detection liquid), the 4th pipeline 104 connects luminol solution and provides device (the 4th pipe
Road 104 is extend into below the liquid level of reaction solution), the 5th pipeline 105 connects air extractor 150.
First pipe 101 has gas flow control valve 1011, and gas flow control valve 1011 is for controlling ozone
Input rate and input total amount.In other embodiments, input ozone can also be controlled using ozone generating-device 110 in itself
Rate and total amount.
The gas in reaction tank is discharged in time by the 5th pipeline 105 for air extractor 150, the port of the 5th pipeline 105
Above corresponding reaction solution.
Since with above structure, COD detection device provided by the present embodiment can utilize ozone and luminol solution
Cooperation, can fast and effeciently realize the detection to COD, concrete principle is as follows:
Sample solution is held in reaction tank 120, then passes through sample solution of the ozone generating-device 110 to reaction tank 120
Input quantitative ozone；After having reacted a period of time, it is believed that respective sample solution has been completed that corresponding oxidation is made
With (having been realized in oxygen process)；Then, luminol solution, luminol are inputted into reaction tank 120 by luminol device
Solution can be reacted with the residue ozone being dissolved in sample solution, generate and luminescence phenomenon occurs, and the solution of this luminescence phenomenon
It is input to after detection cell 130, so that it may according to the absorbance of luminous power or luminescent solution, measure corresponding detection
Numerical value (such as light intensity or absorbance), so that correspondence obtains the residue ozone amount in sample solution；And it obtains in sample solution
Residue ozone amount, so that it may the amount for the ozone that sample solution is consumed in oxygen process is known, to obtain COD.
During above-mentioned principle, it can be used as by increasing blank solution (usually deionized water) in this regard, also, can
Not same amount ozone is dissolved in multiple groups blank solution to pass through, and makes corresponding control table or curve, so that accordingly
Detection process is more accurate.
In the present embodiment, reaction tank 120 has pond lid 121.Pond lid 121 is used to protect the solution in reaction tank 120.And
And ultraviolet lamp 180 can also be set below pond lid 121.Ultraviolet lamp 180 peomotes the abundant progress of biochemical oxygen demand process,
To keep testing result more accurate.
In the present embodiment, COD detection device further includes the 6th pipeline protruded into reaction tank 120 outside reaction tank 120
106, the 6th pipeline 106 connects NaHCO3Solution supply device 160.NaHCO3Solution can be used for eliminating hydroxyl radical free radical
(HO), i.e. NaHCO3Solution is as hydroxyl radical free radical capturing agent, for eliminating influence of the hydroxyl radical free radical to luminol solution,
It shines because hydroxyl radical free radical itself can also cause luminol solution to generate, experimental result is interfered.Therefore, specific
Experimentation in, can first input corresponding NaHCO3Solution, then input luminol solution.
In the present embodiment, there is liquid flow control valve door 1041 on the 4th pipeline 104；Have on the 6th pipeline 106
There is liquid flow control valve door 1061.The setting of each liquid flow control valve door, for accurately controlling for each solution input quantity.
In the present embodiment, the side of detection cell 130 can have light supply apparatus 172, relative to the another of light supply apparatus 172
Side can have light intensity test device 173, and light supply apparatus 172 and light intensity test device 173 are connected to control device 171.This
When, control device 171 directly can carry out unified configuration to light supply apparatus 172 and light intensity test device 173.Control device 171
It can be SCM system device.
Meanwhile as previously described, when the detection of device provided in this embodiment, light supply apparatus may not necessarily also be utilized
172 (respective sources of light supply apparatus 172 need not be opened), and directly generated using sample solution with luminol solution luminous existing
As carrying out the detection of light intensity, and then obtain corresponding data.
Since with above two detection pattern, (wavelength of light source, be can choose as different from above-mentioned in light supply apparatus 172
The wavelength of luminescence phenomenon institute isolychn, to better ensure that the progress of two kinds of detection patterns), utilize COD provided in this embodiment
Detection device, additionally it is possible to be compared using the testing result under different detection patterns, to keep testing result more accurate.
It should be noted that in other embodiments, control device 171, light supply apparatus 172 and light intensity test device 173
It can be substituted using corresponding absorbance detection device, at this point it is possible to will test one that absorbance detection device is treated as in pond
Element (for being put into the respective element of detection liquid).
In the present embodiment, one end of second pipe 102 is connected to 120 bottom of reaction tank, and the other end is connected to detection cell 130
Top.This structure facilitates the solution in reaction tank 120 to enter detection cell 130.
It should be noted that can have agitating device (not shown) in reaction tank 120, so that respective reaction be made more to accelerate
It is fast and uniform.
It can have cooling device (not shown) on pond lid 121, to prevent ultraviolet lamp 180 from causing in irradiation process accordingly
Reaction environment temperature increase.
In addition, the junction of detection cell 130 and third pipeline 103 can have check valve (not marking), the stream of check valve
To flow from reaction tank 120 to third pipeline 103, check valve is for preventing corresponding sample solution after detection from flowing back into detection
In pond 130.
Although the utility model discloses as above, the utility model is not limited to this.Anyone skilled in the art,
It does not depart from the spirit and scope of the utility model, can make various changes or modifications, therefore the protection scope of the utility model
It should be defined by the scope defined by the claims..
Claims (10)
1. a kind of COD detection device characterized by comprising
Reaction tank；
Detection cell；
The first pipe in the reaction tank is protruded into outside the reaction tank, the first pipe connects ozone generating-device；
The second pipe being connected between the reaction tank and the detection cell has gas flow control on the second pipe
Valve；
The third pipeline of the detection cell is connected, the third pipeline is discharged from the detection cell for liquid；From described anti-
The 4th pipeline in the reaction tank is protruded into outside Ying Chi, the 4th pipeline connection luminol solution provides device；
The 5th pipeline in the reaction tank is protruded into outside the reaction tank, the 5th pipeline connects air extractor.
2. COD detection device as described in claim 1, which is characterized in that the reaction tank has Chi Gai.
3. COD detection device as claimed in claim 2, which is characterized in that further include the ultraviolet lamp below the pond lid.
4. COD detection device as claimed in claim 1 or 2, which is characterized in that further include protruding into institute outside the reaction tank
The 6th pipeline in reaction tank is stated, the 6th pipeline connects NaHCO3Solution supply device.
5. COD detection device as claimed in claim 4, which is characterized in that have gas flow control in the first pipe
Valve processed；There is liquid flow control valve door on the 4th pipeline；There is fluid flow control on the 6th pipeline
Valve.
6. COD detection device as claimed in claim 1 or 2, which is characterized in that the side of the detection cell is filled with light source
It sets, the other side has light intensity test device, and the light supply apparatus and light intensity test device are connected to control device.
7. COD detection device as described in claim 1, which is characterized in that one end of the second pipe is connected to described anti-
Bottom of pond portion is answered, the other end is connected to the detection cell top.
8. COD detection device as described in claim 1, which is characterized in that have agitating device in the reaction tank.
9. COD detection device as claimed in claim 2, which is characterized in that the pond is covered with cooling device.
10. COD detection device as described in claim 1, which is characterized in that the connection of the detection cell and the third pipeline
Place has check valve, and the flow direction of the check valve is to flow from the reaction tank to the third pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820809310.1U CN208283282U (en) | 2018-05-29 | 2018-05-29 | COD detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820809310.1U CN208283282U (en) | 2018-05-29 | 2018-05-29 | COD detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208283282U true CN208283282U (en) | 2018-12-25 |
Family
ID=64705172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820809310.1U Expired - Fee Related CN208283282U (en) | 2018-05-29 | 2018-05-29 | COD detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208283282U (en) |
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2018
- 2018-05-29 CN CN201820809310.1U patent/CN208283282U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181225 Termination date: 20190529 |
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| CF01 | Termination of patent right due to non-payment of annual fee |