CN202057604U - On-line monitoring device for total arsenic in water - Google Patents
On-line monitoring device for total arsenic in water Download PDFInfo
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- CN202057604U CN202057604U CN2011201284286U CN201120128428U CN202057604U CN 202057604 U CN202057604 U CN 202057604U CN 2011201284286 U CN2011201284286 U CN 2011201284286U CN 201120128428 U CN201120128428 U CN 201120128428U CN 202057604 U CN202057604 U CN 202057604U
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Abstract
The utility model relates to an on-line monitoring device for total arsenic in water. The on-line monitoring device for the total arsenic in the water comprises an embedded control system, a sampling pump system, a batching system, a multi-channel sampling system, an expelling system and an absorption and detection system, wherein the sampling pump system, the batching system, the multi-channel sampling system, the expelling system and the absorption and detection system are sequentially connected through pipelines. A control program is preset in the embedded control system to control the work of the sampling pump system, the batching system, the multi-channel sampling system, the expelling system and the absorption and detection system. After the sampling pump system and the batching system conduct batching and sampling, a reagent and a water sample to be monitored enter the expelling system through the multi-channel sampling system; various forms of arsenic, such as inorganic arsenic and organic arsenic in the water sample to be monitored are united into a valence gaseous arsenic compound through the chemical reaction of oxidation reduction in the expelling system; after the chemical reaction, the total arsenic is expelled and is transferred into the absorption and detection system; and in the absorption and detection system, the gaseous arsenic compound is adsorbed, and the on-line detection of total arsenic is conducted. The on-line monitoring device solves the problem that the water sample background disturbs and affects the accuracy of detection, the accuracy of measurement is greatly improved, and the application range of monitoring is broadened.
Description
Technical field
The utility model belongs to on-line monitoring instrument technical field, specifically relates to a kind of on-Line Monitor Device that is applicable to total arsenic content in the water quality.
Background technology
Because the harmfulness of arsenic contamination, to set up the arsenic contamination early warning system and arsenic contamination is monitored in real time become urgent day by day, the demand of total arsenic on-line monitoring instrument also manifests in recent years day by day.At present total basic dependence on import of arsenic on-line monitoring instrument, import instrument costs an arm and a leg.For the height of breaking import instrument relies on, at the technical barrier of total arsenic on-line monitoring, many scientific and technical innovation enterprises are by strengthening the scientific research input, and a series of total arsenic on-line monitoring instrument that release one after another have been filled up domestic blank, the history of the foreign technology that is through with monopolization.
The quantity of total domestic installation of arsenic on-line monitoring instrument is few, this mainly is because at present main dependence on import of total arsenic 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 total arsenic on-line monitoring instrument kind is more single, technology and quality with compare abroad that also there is a big difference.
Because the caused disease of arsenic poisoning often has generation, trivalent arsenic is the common valence state of arsenic, also is the arsenic contamination material the strongest to human toxicity.Total arsenic refers to the content (summation that comprises various form arsenic concentrations) of total arsenic in the 1L water.If arsenic 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 total arsenic.
In order to realize that the total arsenic 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 total arsenic on-line monitoring instrument, and its technology is mainly based on the optics colourimetry and the anodic stripping voltammetry of standard.Wherein the required amount of reagent of optics colourimetry of standard 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 the total quantitative determination process of arsenic, real-time is very poor for monitoring water quality on line.Anodic stripping voltammetry is a kind of newer measuring method, original this method mainly is used in laboratory measurement or emergency monitoring, why being used in these occasions is because use the pre-service work in early stage of water sample to carry out by hand by the user in these cases, and for on-line monitoring, can only be used for that water quality is very limpid, arsenic content is lower and arsenic in the existing under the single situation of form of water, accuracy very muddy when water sample itself or that measure when containing a large amount of impurity and even corrosive substance will descend greatly.
Summary of the invention
The purpose of this utility model provides a kind of on-Line Monitor Device that can accurately monitor total arsenic concentration in the water, realizes the purpose of real time on-line monitoring, and its monitoring accuracy can satisfy the monitoring requirement to total arsenic concentration 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 total arsenic in the water.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: total arsenic 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 arsenic, the arsenic of organo-arsenic variform is unified into a kind of gaseous state arsenide of valence state, total arsenic is all evicted from and is transferred in absorption and the detection system behind the chemical reaction, and gaseous state arsenide is absorbed and carries out the online detection of total arsenic 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 gaseous state arsenide 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 total arsenic content in the water sample, photodetector is responsible for responding to the intensity of detection light source, according to the content of total arsenic 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 utility model hyperchannel sampling system, 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 the utility model sampling pump system 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 utility model passes through redox chemical reaction with inorganic arsenic in the water sample to be measured, the arsenic of organo-arsenic variform absorbs the mensuration that this gaseous state arsenide generation color change is realized total arsenic by another kind of reagent after being unified into a kind of gaseous state arsenide 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, since water sample to be measured water sample itself have under color or the very muddy situation can the total arsenic of influence mensuration, by device solves described in the utility model 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 utility model;
Fig. 2 is a kind of theory structure synoptic diagram of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1 and Fig. 2, the utility model comprises 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 arsenic, the arsenic of organo-arsenic variform is unified into a kind of gaseous state arsenide of valence state, total arsenic is all evicted from and is transferred in absorption and the detection system behind the chemical reaction, and gaseous state arsenide is absorbed and carry out the online detection of total arsenic 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 gaseous state arsenide 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 total arsenic content in the water sample, photodetector 11 is responsible for the intensity of induction detection light source 12, according to the content of total arsenic 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 utility model hyperchannel sampling system, 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 the utility model sampling pump system 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 utility model 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 gaseous state arsenide in the colorimetric pool 10 from through wireway 22, begin cooling behind the chemical reaction that continues 3-10 minute, total arsenic is all evicted from and is transferred in the colorimetric pool 10, begin to carry out optical detection subsequently, measure the content of total arsenic 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 total arsenic 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 total arsenic on-Line Monitor Device under the unmanned.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to the foregoing description, and many distortion can also be arranged.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (9)
1. total arsenic 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 arsenic, the arsenic of organo-arsenic variform is unified into a kind of gaseous state arsenide of valence state, total arsenic is all evicted from and is transferred in absorption and the detection system behind the chemical reaction, and gaseous state arsenide is absorbed and carries out the online detection of total arsenic in absorption and detection system.
2. total arsenic on-Line Monitor Device in the water quality according to claim 1 is characterized in that being connected through cushioning pipeline (2) between the quantity tube (3) in described sampling pump systematic sampling pump (1) and the quantitative system.
3. total arsenic on-Line Monitor Device is characterized in that described sampling pump systematic sampling pump (1) is peristaltic pump or syringe pump in the water quality according to claim 2.
4. total arsenic 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. total arsenic on-Line Monitor Device 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) in the water quality according to claim 1.
6. total arsenic 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. total arsenic 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. total arsenic 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. total arsenic 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 |
|---|---|---|---|
| CN2011201284286U CN202057604U (en) | 2011-04-27 | 2011-04-27 | On-line monitoring device for total arsenic in water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201284286U CN202057604U (en) | 2011-04-27 | 2011-04-27 | On-line monitoring device for total arsenic in water |
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| CN202057604U true CN202057604U (en) | 2011-11-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680462A (en) * | 2012-05-16 | 2012-09-19 | 王磊 | Method and device for on-line monitoring of contents of multiple heavy metals in water body |
| CN102809544A (en) * | 2012-07-24 | 2012-12-05 | 广州市怡文环境科技股份有限公司 | On-line automatic monitor for total lead |
| CN109342417A (en) * | 2018-11-29 | 2019-02-15 | 深圳市丹耐美克环保科技有限责任公司 | Arsenic content detection device and method in a kind of water sample |
-
2011
- 2011-04-27 CN CN2011201284286U patent/CN202057604U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680462A (en) * | 2012-05-16 | 2012-09-19 | 王磊 | Method and device for on-line monitoring of contents of multiple heavy metals in water body |
| CN102680462B (en) * | 2012-05-16 | 2015-04-22 | 王磊 | Method and device for on-line monitoring of contents of multiple heavy metals in water body |
| CN102809544A (en) * | 2012-07-24 | 2012-12-05 | 广州市怡文环境科技股份有限公司 | On-line automatic monitor for total lead |
| CN102809544B (en) * | 2012-07-24 | 2016-01-20 | 广州市怡文环境科技股份有限公司 | Total plumbous online automatic monitor |
| CN109342417A (en) * | 2018-11-29 | 2019-02-15 | 深圳市丹耐美克环保科技有限责任公司 | Arsenic content detection device and method in a kind of water sample |
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Granted publication date: 20111130 Termination date: 20130427 |