CN210123402U - Permanganate index on-line measuring system - Google Patents
Permanganate index on-line measuring system Download PDFInfo
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- CN210123402U CN210123402U CN201821997611.8U CN201821997611U CN210123402U CN 210123402 U CN210123402 U CN 210123402U CN 201821997611 U CN201821997611 U CN 201821997611U CN 210123402 U CN210123402 U CN 210123402U
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Abstract
The utility model discloses a permanganate index on-line measuring system, the system includes: the digestion device comprises a plunger pump, a reagent bottle and a digestion device with a heating unit, wherein the reagent bottle comprises a water sample bottle, an acidic reagent bottle and a potassium permanganate reagent bottle; the water sample bottle, the acidic medicament bottle and the potassium permanganate medicament bottle are respectively connected with the plunger pump and the digestion device through the multi-channel valve; the plunger pump pumps the reagents in the bottles to the digestion device through a multi-channel valve; digestion device's both sides still are equipped with light source emitter and light source detector respectively, and light source emitter can transmit optical signal and see through digestion device detects in order to supply light source detector, the utility model has the advantages of quick simple and convenient, sensitivity is high, precision is good and can realize on-line measuring.
Description
Technical Field
The utility model relates to a permanganate index measures technical field, concretely relates to permanganate index on-line measuring system.
Background art:
permanganate index is one of the main pollution indicators for cities and rivers in the vicinity. Can comprehensively reflect the pollution degree of reducing substances (mainly organic matters) in the water body, and the permanganate index is a water quality index which needs to be monitored in water quality monitoring projects of Japan, Germany and other countries. The permanganate index is also taken as a routine monitoring item in the sanitary Standard for Drinking Water issued by China.
The existing national standard adopts a titration method for measuring the permanganate index, but the titration method has the defects of time consumption, material consumption, inconvenient operation, high labor intensity of an analyst and the like. And human errors are easily introduced, so that the reproduction rate of test data is reduced. In addition, on-line and remote analysis is difficult to realize by measuring the permanganate index by a titration method, and at present, in order to deal with various water pollution emergencies, various new systems which are beneficial to realizing on-line and remote monitoring of water quality need to be established and searched.
Disclosure of Invention
An object of the utility model is to provide a permanganate index on-line measuring system to solve one of the above-mentioned multinomial defect or defect that leads to among the prior art.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
an online permanganate index detection system, the system comprising: the digestion device comprises a plunger pump, a reagent bottle and a digestion device with a heating unit, wherein the reagent bottle comprises a water sample bottle, an acidic reagent bottle and a potassium permanganate reagent bottle;
the water sample bottle, the acidic medicament bottle and the potassium permanganate medicament bottle are respectively connected with the plunger pump and the digestion device through the multi-channel valve; the plunger pump pumps the reagents in the bottles to the digestion device through a multi-channel valve;
the two sides of the digestion device are respectively provided with a light source emitter and a light source detector, and the light source emitter can emit light signals to penetrate through the digestion device to be detected by the light source detector.
The utility model has the advantages that:
1. the system compares the photometric value of the mixed solution before and after digestion with a standard curve to obtain the permanganate index, and has the advantages of rapidness, convenience, high sensitivity and good precision.
2. The plunger pump, the electromagnetic valve, the heating device and the control unit are connected, so that the control unit can conveniently control and operate, convenience is provided for a user, and online detection can be realized.
3. Through on-line measuring and the reagent bottle of placing, reduced the possibility of staff and medicament contact, improved staff's degree of safety.
4. The reagent sample amount is small, and the cost is low.
Drawings
Fig. 1 is a schematic diagram of the permanganate index online detection system according to the embodiment of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1, an online permanganate index detection system includes: the digestion device comprises a plunger pump 9, reagent bottles and a digestion device with a heating unit, wherein the reagent bottles comprise a water sample bottle 11, an acidic reagent bottle 12 and a potassium permanganate reagent bottle 13; the water sample bottle 11, the acidic medicament bottle 12 and the potassium permanganate medicament bottle 13 are respectively connected with the plunger pump 9 and the digestion device through a multi-channel valve 17; the plunger pump 9 pumps the reagents in the bottles to the digestion device through a multi-channel valve 17; the two sides of the digestion device are respectively provided with a light source emitter 17 and a light source detector 16, and the light source emitter 17 can emit light signals to penetrate through the digestion device for the light source detector 16 to detect.
The plunger pump 9 is connected with the digestion device through a pipeline, a public channel inside the multi-channel valve 17 and the electromagnetic valve 7, the plunger pump 9 is connected with two pipelines, one pipeline is connected with the pure water barrel 10 through the first electromagnetic valve 1, the other pipeline is communicated with the digestion pipe 18 through the seventh electromagnetic valve 7, and the multi-channel valve 17 is communicated on the pipeline between the plunger pump 9 and the seventh electromagnetic valve 7. The multi-channel valve 17 comprises a second electromagnetic valve 2, a water sample bottle 11 connected with the second electromagnetic valve 2, a third electromagnetic valve 3, an acid medicament bottle 12 connected with the third electromagnetic valve 3, a fourth electromagnetic valve 4, a potassium permanganate medicament bottle 13 connected with the fourth electromagnetic valve 4, a fifth electromagnetic valve 5, a standard liquid bottle 14 connected with the fifth electromagnetic valve 5, a sixth electromagnetic valve 6 and a waste liquid bottle 15 connected with the sixth electromagnetic valve 6, wherein the standard liquid bottle 14 is a permanganate index standard liquid with known concentration and is used for regularly correcting a potassium permanganate index and absorption luminosity standard curve.
The digestion device is a digestion pipe 18 with a built-in heating unit, the heating unit is a heating wire, the heating unit, the plunger pump 9, the multi-channel valve 17, the first electromagnetic valve 1, the seventh electromagnetic valve 7 and the eighth electromagnetic valve 8 are respectively connected with the control unit, and the control unit can control the opening or the closing of the multi-channel valve, the first electromagnetic valve 1, the seventh electromagnetic valve 7 and the eighth electromagnetic valve 8 respectively.
Under the acidic condition, excessive KMnO4 is used for oxidizing reducing substances in a water body, due to the unique purple red of KMnO4, the maximum absorption peak exists at the position of wavelength 525nm, the amount of the residual KMnO4 is measured by a colorimetric method, a standard curve of permanganate index and absorbance is established, and the permanganate index of the water sample is calculated through the curve.
As shown in FIG. 1, the overall colorimetric permanganate index determination procedure is as follows:
step 1, setting the plunger pump 9 to zero: and opening the electromagnetic valve 6 of the multi-channel discharge valve 17, enabling the plunger pump 9 to move the plunger to the highest position to return to zero, and closing the electromagnetic valve 6 of the multi-channel discharge valve 17 to realize the zero setting of the plunger pump 9.
Step 2, air is discharged by a plunger pump 9: opening the electromagnetic valve 1, moving the plunger to the lowest position by the plunger pump 9, namely, downwards moving by 100% stroke, and closing the electromagnetic valve 1 to realize the action of pumping pure water in the pure water barrel 10 by 100% stroke at a time; and opening the electromagnetic valve 6 of the multi-channel discharge valve 17, enabling the plunger pump 9 to move the plunger to the highest position to return to zero, and closing the electromagnetic valve 6 of the multi-channel discharge valve 17 to realize that the air in the plunger pump 9 is completely discharged by one 100% of stroke liquid discharge action of the plunger pump 9. The operations are repeated once, the pipelines in the plunger pump 9 and between the plunger pump 9 and the electromagnetic valve 6 of the multi-channel discharge valve 17 are filled with pure water, and the plunger pump 9 and the pipelines are filled with the pure water in the subsequent whole working process.
Step 3, emptying the digestion device: opening the electromagnetic valve 8 and the electromagnetic valve 7, moving the plunger to the lowest position by the plunger pump 9, namely, downwards moving by 100% of stroke, and closing the electromagnetic valve 7 to realize the operation of extracting the substances in the digestion pipe 18 with 100% of stroke and the heating wire; and opening the electromagnetic valve 6 of the multi-channel discharge valve 17, enabling the plunger pump 9 to move the plunger to the highest position to return to zero, and closing the electromagnetic valve 6 of the multi-channel discharge valve 17 to realize the liquid discharge action of the plunger pump by 100% of stroke at a time. Repeating the above actions until the volume of the extraction pipe 18 which is larger than the heating wire is extracted, ensuring that the waste liquid is completely discharged, and closing the electromagnetic valve 8.
Step 4, measuring the photometric quantity of the mixed solution before digestion, wherein the measuring of the photometric quantity of the mixed solution before digestion comprises the following steps:
step A, opening an electromagnetic valve 2 in a multi-channel drain valve 17, moving a plunger to the lowest position by a plunger pump 9, namely, running 100% of travel downwards, and closing the electromagnetic valve 2 of the multi-channel drain valve 17 to realize the action of pumping water samples in a sample barrel 11 by 100% of travel at one time; and opening the electromagnetic valve 6 of the multi-channel discharge valve 17, enabling the plunger pump 9 to move the plunger to the highest position to return to zero, and closing the electromagnetic valve 6 of the multi-channel discharge valve 17 to realize the liquid discharge action of the plunger pump by 100% of stroke at a time.
Step B, opening the electromagnetic valve 2 of the multi-channel drain valve 17, moving the plunger pump 9 to the lowest position, namely, running the plunger pump downwards for 100% of stroke, and closing the electromagnetic valve 2 of the multi-channel drain valve 17 to realize the action of pumping the water sample in the sample barrel 11 for 100% of stroke at one time; opening the electromagnetic valve 6 of the multi-channel discharge valve 17, moving the plunger pump 9 to a position of 90% stroke, and closing the electromagnetic valve 6 of the multi-channel discharge valve 17 to realize the liquid discharge action of 90% stroke of the plunger pump at one time; at the moment, the channels from the electromagnetic valve 2 in the multi-channel drain valve 17 to the electromagnetic valve 6 in the multi-channel drain valve 17 are all filled with water samples.
Step C, opening the electromagnetic valve 7 and the electromagnetic valve 8, opening the electromagnetic valve 2 of the multi-channel discharge valve 17, moving the plunger pump 9 to run for 50% of travel downwards, closing the electromagnetic valve 2 of the multi-channel discharge valve 17, and moving a plunger in the plunger pump 9 for 50% of travel upwards to realize the action of pumping the water sample in the water sample barrel 11 with 50% of travel at a time and conveying the water sample to the digestion pipe 18 with the heating wire; solenoid valve 7 and solenoid valve 8 are closed.
And D, repeating the steps A to C, and respectively conveying the sulfuric acid and the potassium permanganate into the digestion pipe 18 with the heating wire. The photometric value of the mixed solution at this time was measured.
And 5, heating the digestion device for thirty minutes to digest the digestion device, bubbling and mixing the mixed liquor in the digestion device through a plunger pump 9 in the heating process to promote the reaction, and immediately carrying out colorimetric measurement on the photometric value of the current mixed liquor after digestion.
And 6, comparing the ratio of the photometric values of the mixed solution before and after digestion with a pre-established ratio-permanganate index curve of the photometric values before and after digestion, and searching for the permanganate index corresponding to the ratio.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (5)
1. An online permanganate index detection system, the system comprising: the digestion device comprises a plunger pump, a reagent bottle and a digestion device with a heating unit, wherein the reagent bottle comprises a water sample bottle, an acidic reagent bottle and a potassium permanganate reagent bottle;
the water sample bottle, the acidic medicament bottle and the potassium permanganate medicament bottle are respectively connected with the plunger pump and the digestion device through the multi-channel valve; the plunger pump pumps the reagents in the bottles to the digestion device through a multi-channel valve;
the two sides of the digestion device are respectively provided with a light source emitter and a light source detector, and the light source emitter can emit light signals to penetrate through the digestion device to be detected by the light source detector;
the reagent bottle also comprises a pure water bottle which is connected with the plunger pump.
2. The online permanganate index detection system according to claim 1, wherein the reagent bottle further comprises waste liquid bottles respectively connected to the multi-channel valves.
3. The system for the on-line detection of permanganate index according to claim 1, wherein the reagent bottle further comprises a standard solution bottle connected with a multi-channel valve, and the standard solution bottle is used for periodically correcting a standard curve of potassium permanganate index and absorbance.
4. The permanganate index online detection system according to claim 1, wherein the plunger pump is further connected with the digestion device through an electromagnetic valve, and the heating unit, the plunger pump, the multi-channel valve and the electromagnetic valve are respectively connected with the control unit.
5. The system for the on-line detection of permanganate index according to claim 1, wherein a solenoid valve is provided on the pipeline between the digestion unit and the multi-channel valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821997611.8U CN210123402U (en) | 2018-11-30 | 2018-11-30 | Permanganate index on-line measuring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821997611.8U CN210123402U (en) | 2018-11-30 | 2018-11-30 | Permanganate index on-line measuring system |
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| CN210123402U true CN210123402U (en) | 2020-03-03 |
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| CN201821997611.8U Active CN210123402U (en) | 2018-11-30 | 2018-11-30 | Permanganate index on-line measuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444127A (en) * | 2018-11-30 | 2019-03-08 | 苏州奥特福环境科技有限公司 | A kind of permanganate index online test method and system |
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2018
- 2018-11-30 CN CN201821997611.8U patent/CN210123402U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444127A (en) * | 2018-11-30 | 2019-03-08 | 苏州奥特福环境科技有限公司 | A kind of permanganate index online test method and system |
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