CN102252881A - On-line monitoring device of cyanides in water - Google Patents
On-line monitoring device of cyanides in water Download PDFInfo
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- CN102252881A CN102252881A CN 201110106887 CN201110106887A CN102252881A CN 102252881 A CN102252881 A CN 102252881A CN 201110106887 CN201110106887 CN 201110106887 CN 201110106887 A CN201110106887 A CN 201110106887A CN 102252881 A CN102252881 A CN 102252881A
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Abstract
The invention discloses an on-line monitoring device of cyanides in water. A control program is preset in an embedded control system of the on-line monitoring device and used for controlling a sampling pump system, a quantitative system, a multi-channel sampling system, an ejection system and an absorption and detection system to operate; after the sampling pump system and the quantitative system are used for performing quantitative sampling, a reagent and a water sample to be tested enter the ejection system through the multi-channel sampling system, various cyanides such as inorganic cyanides and organic cyanides in the water sample are converted to a gaseous cyanide in one valence state in the ejection system through the redox chemical reaction; and after the chemical reaction, the cyanides are ejected and moved to the absorption and detection system, and the gaseous cyanide is absorbed in the absorption and detection system and the on-line inspection of the cyanide is performed. The on-line monitoring device can be used for solving the problem that the background interference of the water sample influences the measurement accuracy, thus the measurement accuracy can be greatly increased and the monitoring application range can be expanded.
Description
Technical field
The invention belongs to on-line monitoring instrument technical field, specifically relate to a kind of on-Line Monitor Device that is applicable to cyanide content in the water quality.
Background technology
Because the harmfulness of cyanide pollution, set up the cyanide pollution early warning system cyanide pollution is monitored in real time, become urgent day by day, the demand of prussiate on-line monitoring instrument also manifests in recent years day by day, the present basic dependence on import of prussiate on-line monitoring instrument, import instrument costs an arm and a leg.For the height of breaking import instrument relies on, at the difficult problem of prussiate on-line monitoring technique, many scientific and technical innovation enterprises are by strengthening the scientific research input, and a series of prussiate on-line monitoring instrument release one after another, filled up domestic blank, the history of the foreign technology that is through with monopolization.
The quantity of the domestic installation of prussiate on-line monitoring instrument is few, this mainly is because at present main dependence on import of prussiate on-line monitoring instrument and import price costliness, and that homemade this quasi-instrument user in use all thinks is not handy, wherein performance is the most outstanding is exactly that measuring speed is too slow and accuracy of measurement is not high, simultaneously homemade prussiate on-line monitoring instrument kind is more single, technology and quality with compare abroad that also there is a big difference.
Prussiate is meant the content (summation that comprises the concentration of cyanide of various forms) of total cyanogen in the 1L water.If cyanide content is higher in the water, drunk then and can accumulate in vivo by the people, when long-term drinking will cause the generation of some diseases, therefore very important to the monitoring of prussiate.
In order to realize that the cyanide content in the water quality is controlled, international and domesticly formulated different standards respectively according to different water quality.It is considerably less that the preceding whole world can produce the producer of prussiate on-line monitoring instrument, and its technology is mainly based on the optics colourimetry.The required amount of reagent of this method is bigger, cause the chemical reagent consumption amount big, use this instrument to cause the operation burden to the user virtually, and this method The pretreatment process complexity, length consuming time in total cyanide mensuration process, real-time is very poor for monitoring water quality on line.
Summary of the invention
The purpose of this invention is to provide a kind of on-Line Monitor Device that can accurately monitor concentration of cyanide in the water, realize the purpose of real time on-line monitoring, its monitoring accuracy can satisfy the monitoring requirement to concentration of cyanide in all kinds of water that State Bureau of Environmental Protection proposes.Can solve accurately and fast on-line monitoring problem, and be applicable to various dissimilar water quality prussiate in the water.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: prussiate on-Line Monitor Device in a kind of water quality comprises sampling pump system, quantitative system, hyperchannel sampling system that embedded control system is connected with pipeline successively, evicts system and absorption and detection system from; Default control program in the described embedded control system, control sampling pump system, quantitative system, the hyperchannel sampling system, evict system and absorption and detection system work from, behind described sampling pump system and the quantitative system quantitative sampling, reagent and water sample to be measured are entered into the system of evicting from through the hyperchannel sampling system, in evicting system from through redox chemical reaction with water sample to be measured in inorganic cyanide, the cyanogen of organic cyanide variform is unified into a kind of dry cyaniding thing of valence state, prussiate is all evicted from and is transferred in absorption and the detection system behind the chemical reaction, and the dry cyaniding thing is absorbed and carries out the online detection of prussiate in absorption and detection system.
As preferably, be connected through the buffering pipeline between the quantity tube in described sampling pump systematic sampling pump and the quantitative system.This connected mode can guarantee can not enter into the sampling pump system when chemical reagent frees in and out quantity tube, thereby has protected sampling pump can not be subjected to the pollution of reagent and damage.
As preferably, described sampling pump systematic sampling pump is peristaltic pump or syringe pump, and sampling pump can positive and negative rotation and can be made and produce negative pressure or malleation in the quantity tube.
As preferably, the quantity tube in the described quantitative system is provided with and is used for light source and the optical receiver that quantitative some pairings are used.Light source and optical receiver occur in pairs, and the logarithm of light source and optical receiver and required quantitative volume number are corresponding one by one.By treating quantitative solution makes light emitted change to determine to the light intensity of optical receiver whether solution continues to flow or static when flowing in quantity tube, thereby the volume of definite solution.
As preferably, described hyperchannel sampling system comprises the hyperchannel module, all is connected with solenoid valve via pipeline on each passage of hyperchannel module.Solenoid valve and hyperchannel module do not have the one design, connect by pipeline between the two, and the benefit of doing like this is that the solenoid valve on any one passage has damaged the solenoid valve use that can change separately and not influence on other passages, so that reduce user's maintenance cost.
As preferably, in the described hyperchannel sampling system, the hyperchannel module opens and closes the first titer pipeline, the second titer pipeline, the first reagent pipeline, the second reagent pipeline, evicts pond waste liquid pipeline, the 3rd reagent pipeline and water sample pipeline to be measured from through the solenoid valve selectivity.
As preferably, the described system that evicts from is an obturator, comprises and evicts the pond from, evicts the two ends, pond from and is provided with lower lock block, and the break-make by electromagnetism realizes that lower lock block sealing and unlatching evict the pond from, evicts the pond from so that reagent can free in and out; The bottom of evicting the pond from is provided with attemperating unit, and attemperating unit is responsible for heating and is evicted the pond to certain temperature, so that carry out corresponding chemical reaction.Wherein evict the pond from and evict between the waste liquid pipeline of pond and open and close pipeline connection by hyperchannel module selectivity, when detection system detect finish after, the hyperchannel module is opened and is evicted pond and the pipeline connection effluent discharge of evicting pond waste liquid pipeline from from.
As preferably, described absorption and detection system are an obturator, comprise colorimetric pool, and the colorimetric pool two ends are provided with lower lock block, break-make by electromagnetism realizes the lower lock block sealing and opens colorimetric pool, so that reagent can free in and out colorimetric pool with the dry cyaniding thing that is unified into a kind of valence state.One side of colorimetric pool is provided with detection light source, relatively be provided with photodetector with detection light source at the opposite side of colorimetric pool, wherein detection light source is responsible for producing the light source that detects cyanide content in the water sample, photodetector is responsible for responding to the intensity of detection light source, according to the content of prussiate in the change calculations water sample of light intensity.
Hyperchannel module and solenoid valve separate not the all-in-one-piece mode and carry out channel selecting in the hyperchannel sampling system of the present invention, in case this method has solved the normal operation that can come recovery system by the mode that provides for simple replacement of after solenoid valve on certain passage damages, and has saved cost and has reduced labour intensity than integral replacing hyperchannel sampling system.
Directly do not fuse between sampling pump system of the present invention and the quantitative system; but connect by one section buffering pipeline; this connected mode is guaranteeing can not enter into the sampling pump system when chemical reagent frees in and out quantitative system, thereby has protected sampling pump can not be subjected to the pollution of reagent and damage.
The present invention passes through redox chemical reaction with inorganic cyanide in the water sample to be measured, the cyanogen of organic cyanide variform absorbs the mensuration that this dry cyaniding thing generation color change is realized prussiate by another kind of reagent after being unified into a kind of dry cyaniding thing of valence state and evicting it from former water sample, wherein evicting system and detection system from is respectively two independently obturators, chemical reaction and optical detection are independently carried out, solution is pure chemical reagent in the detection system, and evict from chemical reagent and water sample to be measured are arranged in the pond, because water sample to be measured has the mensuration that can influence prussiate under color or the very muddy situation at water sample itself, by device solves of the present invention water sample itself have background interference and then influence the problem of accuracy of measurement, improve the accuracy of measuring greatly, increased the scope of application of monitoring greatly.
Description of drawings
Fig. 1 is a kind of pipeline structure synoptic diagram of the present invention;
Fig. 2 is a kind of theory structure synoptic diagram of the present invention.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: referring to Fig. 1 and Fig. 2, the present invention includes the sampling pump system that embedded control system is connected with pipeline successively, quantitative system, the hyperchannel sampling system, evict system and absorption and detection system from, default control program in the embedded control system wherein, control sampling pump system, quantitative system, the hyperchannel sampling system, evict system and absorption and detection system work from, behind sampling pump system and the quantitative system quantitative sampling, reagent and water sample to be measured are entered into the system of evicting from through the hyperchannel sampling system, in evicting system from through redox chemical reaction with water sample to be measured in inorganic cyanide, the cyanogen of organic cyanide variform is unified into a kind of dry cyaniding thing of valence state, prussiate is all evicted from and is transferred in absorption and the detection system behind the chemical reaction, and the dry cyaniding thing is absorbed and carry out the online detection of prussiate by reagent in absorption and detection system.Sampling pump systematic sampling pump 1 is peristaltic pump or syringe pump, can positive and negative rotation and can make and produce negative pressure or malleation in the quantity tube, be connected through cushioning pipeline 2 between the quantity tube 3 in sampling pump 1 and the quantitative system.Quantity tube 3 is provided with and is used for light source 4 and the optical receiver 7 that quantitative some pairings are used, light source and optical receiver occur in pairs, and the logarithm of light source and optical receiver and required quantitative volume number are corresponding one by one, by treating quantitative solution makes light emitted change to determine to the light intensity of optical receiver whether solution continues to flow or static when flowing in quantity tube, thus the volume of definite solution.The hyperchannel sampling system comprises hyperchannel module 5, all be connected with solenoid valve 6 via pipeline on each passage of hyperchannel module 5, hyperchannel module 5 opens and closes the first titer pipeline 14, the second titer pipeline 15, the first reagent pipeline 16, the second reagent pipeline 17, waste liquid pipeline 18, the 3rd reagent pipeline 19 and water sample pipeline 20 to be measured through solenoid valve 6 selectivity.Evicting system 24 from is an obturator, comprise and evict pond 9 from, evict 9 two ends, pond from and be provided with lower lock block 8, break-make by electromagnetism realizes that lower lock block 8 seals and pond 9 is evicted in unlatching from, thereby having guaranteed that reagent and water sample to be measured can free in and out evicts pond 9 from, the bottom of evicting pond 9 from is provided with attemperating unit 13, and attemperating unit 13 is responsible for heating and is evicted pond 9 to certain temperature, so that carry out corresponding chemical reaction.Wherein evict pond 9 from and evict between pond sewer pipe 18 tunnel and open and close pipeline connection, detect the back hyperchannel module 5 that finishes and open and evict pond 9 and the pipeline connection effluent discharge of evicting pond waste liquid pipeline 18 from from by hyperchannel module 5 selectivity.Absorption is an obturator with detection system 25, comprise colorimetric pool 10, colorimetric pool 10 two ends are provided with lower lock block 8 ＇, break-make by electromagnetism realizes lower lock block 8 ＇ sealing and opens colorimetric pool 10, thereby guaranteed that reagent and the dry cyaniding thing that is unified into a kind of valence state can free in and out colorimetric pool 10, one side of colorimetric pool 10 is provided with detection light source 12, relatively be provided with photodetector 11 with detection light source 12 at the opposite side of colorimetric pool 10, detection light source 12 is responsible for producing the light source that detects cyanide content in the water sample, photodetector 11 is responsible for the intensity of induction detection light source 12, according to the content of prussiate in the change calculations water sample of light intensity.
Hyperchannel module and solenoid valve separate not the all-in-one-piece mode and carry out channel selecting in the hyperchannel sampling system of the present invention, in case this method has solved the normal operation that can come recovery system by the mode that provides for simple replacement of after solenoid valve on certain passage damages, and has saved cost and has reduced labour intensity than integral replacing hyperchannel sampling system.
Directly do not fuse between sampling pump system of the present invention and the quantitative system; but connect by one section buffering pipeline; this connected mode is guaranteeing can not enter into the sampling pump system when chemical reagent frees in and out quantitative system, thereby has protected sampling pump can not be subjected to the pollution of reagent and damage.
Principle of work of the present invention is as follows: the sampling pump system produces negative pressure, the 3rd reagent is sucked in the quantity tube via solenoid valve and hyperchannel module, the position that the variation of light signal generating comes perception the 3rd reagent to arrive during by the pipeline between light source and the optical receiver according to the 3rd reagent, and then realize quantitatively measuring of the 3rd reagent, the sampling pump system produces malleation after quantitatively finishing, and the 3rd reagent is pushed in the colorimetric pool 10 via hyperchannel module and solenoid valve; The water sample profit to be measured that the process simple filtration is handled uses the same method to be pushed into and evicts from the pond 9, then with first reagent, second reagent also is pushed into quantitatively evicts from the pond 9, begin to heat by attemperating unit to evicting pond 9 from, promote chemical reaction, opening aspiration pump 21 simultaneously evicts reacted dry cyaniding thing in the colorimetric pool 10 from through wireway 22, begin cooling behind the chemical reaction that continues 3-10 minute, prussiate is all evicted from and is transferred in the colorimetric pool 10, begin to carry out optical detection subsequently, measure the content of prussiate in the water according to the signal intensity of photodetector.Before detecting actual water sample, replace water sample to measure respectively first titer and second titer by above-mentioned flow process respectively earlier, be used for the calculation correction coefficient.All above-mentioned measuring processes all have embedded control system to control automatically to finish, embedded control system provides the man-machine conversation window simultaneously, realize the system configuration of prussiate on-Line Monitor Device and the parameter configuration in the measuring process by keyboard, mouse or touch-screen, thereby realize the full-automatic reliability service of the prussiate on-Line Monitor Device under the unmanned.
At last, should be pointed out that above embodiment only is the more representational example of the present invention.Obviously, the invention is not restricted to the foregoing description, many distortion can also be arranged.Every foundation technical spirit of the present invention all should be thought to belong to protection scope of the present invention to any simple modification, equivalent variations and modification that above embodiment did.
Claims (9)
1. prussiate on-Line Monitor Device in the water quality is characterized in that sampling pump system, quantitative system, hyperchannel sampling system that described monitoring device comprises embedded control system and be connected with pipeline successively, evicts system and absorption and detection system from; Default control program in the described embedded control system, control sampling pump system, quantitative system, the hyperchannel sampling system, evict system and absorption and detection system work from, behind described sampling pump system and the quantitative system quantitative sampling, reagent and water sample to be measured are entered into the system of evicting from through the hyperchannel sampling system, in evicting system from through redox chemical reaction with water sample to be measured in inorganic cyanide, the cyanogen of organic cyanide variform is unified into a kind of dry cyaniding thing of valence state, prussiate is all evicted from and is transferred in absorption and the detection system behind the chemical reaction, and the dry cyaniding thing is absorbed and carries out the online detection of prussiate in absorption and detection system.
2. prussiate on-Line Monitor Device in the water quality according to claim 1 is characterized in that being connected through buffering pipeline (2) between the quantity tube (3) in described sampling pump systematic sampling pump (1) and the quantitative system.
3. prussiate on-Line Monitor Device in the water quality according to claim 2 is characterized in that described sampling pump systematic sampling pump (1) is peristaltic pump or syringe pump.
4. prussiate on-Line Monitor Device in the water quality according to claim 2 is characterized in that the quantity tube (3) in the described quantitative system is provided with light source (4) and the optical receiver (7) that is used for quantitative some pairings uses.
5. prussiate on-Line Monitor Device in the water quality according to claim 1 is characterized in that described hyperchannel sampling system comprises hyperchannel module (5), all is connected with solenoid valve (6) via pipeline on each passage of hyperchannel module (5).
6. prussiate on-Line Monitor Device in the water quality according to claim 5, it is characterized in that in the described hyperchannel sampling system that hyperchannel module (5) opens and closes the first titer pipeline (14), the second titer pipeline (15), the first reagent pipeline (16), the second reagent pipeline (17), evicts pond waste liquid pipeline (18), the 3rd reagent pipeline (19) and water sample pipeline to be measured (20) from through solenoid valve (6) selectivity.
7. prussiate on-Line Monitor Device in the water quality according to claim 1, it is characterized in that the described system (24) that evicts from is an obturator, comprise and evict pond (9) from that evict two ends, pond (9) from and be provided with lower lock block (8), the bottom of evicting pond (9) from is provided with attemperating unit (13).
8. prussiate on-Line Monitor Device in the water quality according to claim 7, it is characterized in that described evict pond (9) from and evict between pond waste liquid pipeline (18) by hyperchannel module (5) selectivity open and close pipeline connection, after the detection system detection finished, hyperchannel module (5) was opened and is evicted pond (9) and the pipeline connection effluent discharge of evicting pond waste liquid pipeline (18) from from.
9. prussiate on-Line Monitor Device in the water quality according to claim 1, it is characterized in that described absorption and detection system (25) are an obturator, comprise colorimetric pool (10), colorimetric pool (10) two ends are provided with lower lock block (8 ＇), one side of colorimetric pool (10) is provided with detection light source (12), relatively is provided with photodetector (11) at the opposite side of colorimetric pool (10) with detection light source (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110106887 CN102252881A (en) | 2011-04-27 | 2011-04-27 | On-line monitoring device of cyanides in water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110106887 CN102252881A (en) | 2011-04-27 | 2011-04-27 | On-line monitoring device of cyanides in water |
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| CN102252881A true CN102252881A (en) | 2011-11-23 |
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| CN 201110106887 Pending CN102252881A (en) | 2011-04-27 | 2011-04-27 | On-line monitoring device of cyanides in water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104062457A (en) * | 2014-07-08 | 2014-09-24 | 河北工业大学 | Automatic sample feeding device for detecting chemical oxygen demand of water quality |
| CN105929124A (en) * | 2016-06-12 | 2016-09-07 | 深圳市清时捷科技有限公司 | On-line water quality analysis instrument and water quality analysis method thereof |
| CN108254318A (en) * | 2017-12-29 | 2018-07-06 | 江苏汇环环保科技有限公司 | A kind of anti-interference NH3-N online automatic monitors |
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Cited By (4)
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| CN108254318A (en) * | 2017-12-29 | 2018-07-06 | 江苏汇环环保科技有限公司 | A kind of anti-interference NH3-N online automatic monitors |
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Application publication date: 20111123 |