CN202057663U - Online monitoring instrument for total nitrogen in water utilizing ultraviolet digestion method - Google Patents
Online monitoring instrument for total nitrogen in water utilizing ultraviolet digestion method Download PDFInfo
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- CN202057663U CN202057663U CN2011201284888U CN201120128488U CN202057663U CN 202057663 U CN202057663 U CN 202057663U CN 2011201284888 U CN2011201284888 U CN 2011201284888U CN 201120128488 U CN201120128488 U CN 201120128488U CN 202057663 U CN202057663 U CN 202057663U
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Abstract
An online monitoring instrument for total nitrogen in water utilizing an ultraviolet digestion method comprises an embedded type control system, a sampling pump system, a quantitative system, a multi-passage sample feeding system and an ultraviolet digestion and detection system, wherein the sampling pump system, the quantitative system, the multi-passage sample feeding system and the ultraviolet digestion and detection system are connected in sequence by pipelines. A control program is preset in the embedded type control system to control operation of the sampling pump system, the quantitative system, the multi-passage sample feeding system and the ultraviolet digestion and detection system. After being quantitatively sampled by the sampling pump system and the quantitative system, a water sample to be detected enters the ultraviolet digestion and detection system through the multi-passage sample feeding system. In the ultraviolet digestion and detection system, a digestion reaction for unifying valance states of nitrogen is accelerated after the water sample to be detected is irradiated by ultraviolet lamps and online detection of total nitrogen is carried out. Ultraviolet light irradiation is added in order to greatly accelerate the digestion reaction for unifying the valance states of the nitrogen, improve real time performance of the online detection of the total nitrogen, and reduce energy consumption of equipment. The problem that the complexing of the nitrogen and organic substances affects accuracy of detection is resolved by carrying out detection after the valance states of the nitrogen are unified.
Description
Technical field
The utility model belongs to on-line monitoring instrument technical field, specifically relates to a kind of ultraviolet resolution method water quality total nitrogen on-line monitoring instrument that is applicable to total nitrogen content in the water quality.
Background technology
Total nitrogen comprises all nitrogen-containing compounds in the solution, i.e. the summation of the nitrogen in nitrite nitrogen, nitrate nitrogen, inorganic salts nitrogen, dissolved nitrogen and the most of nitrogen-containing organic compound.In the total nitrogen to human body harm maximum be nitrite nitrogen, the nitrite nitrogen in water is too high, drink this water and will form nitrosamine with protein bound, be a kind of strong carcinogen, long-term drinking is totally unfavorable to health.Ammonia nitrogen under anaerobic, also can be converted into nitrite nitrogen, nitrate nitrogen is reduced to nitrite nitrogen in the potable water after the effect of nitrate reductase bacterium in human body, and toxicity will be expanded as 11 times of nitrate toxicity, mainly influence the ability that haemoglobin carries oxygen, make human body the phenomenon of suffocating occur.Total nitrogen is the leading indicator of reflection body eutrophication.The generation of TAIHU LAKE contamination accident allows supervision department re-recognize the harmfulness of total nitrogen.Total nitrogen content represents that with the actual content of nitrogen in the 1 premium on currency sample unit is mg/L.It has reflected the contaminated degree of water, and content is big more, illustrates that water body is contaminated serious more.
In order to realize that the total nitrogen content in the water quality is controlled, international and domesticly formulated different standards respectively according to different water quality.The analytical approach that detects total nitrogen is a chemical method.Chemical method has spectrophotometric method and titrimetry, and titrimetry generally is used for lab analysis and is not suitable for the in-site measurement analysis, and can not the on-line analysis data.Conventional online chemical method need reach 30-40 minutes digestion process, makes the mensuration time consumption and energy consumption of total nitrogen to be not suitable for real time on-line monitoring.
Summary of the invention
The purpose of this utility model provides the ultraviolet resolution method water quality total nitrogen on-line monitoring instrument of total nitrogen concentration in a kind of accurately fast monitored water, realize the purpose of real time on-line monitoring, its monitoring accuracy can satisfy the monitoring requirement to total nitrogen concentration in all kinds of water that State Bureau of Environmental Protection proposes.The utility model has solved accurately and the fast on-line monitoring problem to total nitrogen in the water, and is applicable to various dissimilar water quality.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: a kind of ultraviolet resolution method water quality total nitrogen on-line monitoring instrument comprises sampling pump system, quantitative system, the hyperchannel sampling system that embedded control system is connected with pipeline successively and ultraviolet is cleared up and detection system; Default control program in the described embedded control system, control sampling pump system, quantitative system, hyperchannel sampling system and ultraviolet are cleared up and detection system work, behind described sampling pump system and the quantitative system quantitative sampling, water sample to be measured enters through the hyperchannel sampling system that ultraviolet is cleared up and detection system, ultraviolet clear up with detection system in water sample to be measured through the irradiation of uviol lamp accelerate with nitrogen carry out valence state unified clear up reaction, and carry out the online detection of total nitrogen.
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, thus 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, waste liquid pipeline, the 3rd reagent pipeline, the 4th reagent pipeline and water sample pipeline to be measured through the solenoid valve selectivity.
As preferably, described ultraviolet clear up with detection system be an obturator, comprise digestion pool, the digestion pool two ends are provided with lower lock block, the digestion pool outside is provided with at least two uviol lamps, one side of digestion pool is provided with detection light source, relatively is provided with photodetector at the opposite side of digestion pool with detection light source.
As preferably, described ultraviolet clear up with detection system in, the bottom of digestion pool is provided with attemperating unit.
As preferably, described ultraviolet is cleared up with detection system and is comprised digestion pool, open and close pipeline connection by hyperchannel module selectivity between digestion pool and waste liquid pipeline, after the detection system detection finished, the hyperchannel module was opened the pipeline connection effluent discharge of digestion pool and waste liquid pipeline.
Ultraviolet is cleared up and is one with detection system and can carries out ultraviolet and clear up the device that simultaneously can carry out optical detection again, this device is an obturator, comprise lower lock block, uviol lamp, digestion pool, photodetector, detection light source, attemperating unit etc., wherein go up lower lock block and be used to seal digestion pool, uviol lamp is to be responsible for producing the light source that shines ultraviolet light in the digestion pool, at least two of the quantity of uviol lamp, detection light source is responsible for producing the light source that detects total nitrogen content in the water sample, photodetector is responsible for responding to the intensity of detection light source, according to content of total nitrogen in the change calculations water sample of light intensity, attemperating unit is responsible for heating digestion pool to certain temperature, so that carry out corresponding chemical reaction.
Because the nitrogen ion of different valence state easily forms chelate or complex compound with other negative ion in the water, these materials reduce the speed of chemistry redox reaction easily, thereby make the unified consumption long time that needs of the valence state of total nitrogen before detecting.The utility model is realized the water sample chemical digesting by the ultraviolet resolution method, the irradiation that the adds ultraviolet light unified speed of clearing up reaction of valence state that can accelerate greatly, thus improved the real-time of the online detection of total nitrogen, reduced the consumption of equipment simultaneously to the energy.
The mode of the utility model by chemistry redox is unified into a kind of valence state with the nitrogen of all forms in the water and measures, solved the problem that influences accuracy of measurement after organism and the nitrogen complexing.
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 ultraviolet clear up with detection system in digestion pool be the place of clearing up reaction simultaneously and detecting, the digestion pool outer wall is twining heater strip and temperature-sensing element in the attemperating unit, the two ends of digestion pool are realized the lower lock block sealing and are opened digestion pool by the break-make of electromagnetism, thereby guaranteed that chemical reagent can free in and out digestion pool.
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, hyperchannel sampling system and ultraviolet are cleared up and detection system, default control program in the embedded control system wherein, control sampling pump system, quantitative system, hyperchannel sampling system and ultraviolet are cleared up and detection system work, behind sampling pump system and the quantitative system quantitative sampling, water sample to be measured enters through the hyperchannel sampling system that ultraviolet is cleared up and detection system, ultraviolet clear up with detection system in water sample to be measured through the irradiation of uviol lamp accelerate with nitrogen carry out valence state unified clear up reaction, and carry out the online detection of total nitrogen.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, the 4th reagent pipeline 20 and water sample pipeline 21 to be measured through solenoid valve 6 selectivity.Ultraviolet clear up with detection system be an obturator, comprise digestion pool 10, digestion pool 10 two ends are provided with lower lock block 8, digestion pool 10 outsides are provided with at least two uviol lamps 9, one side of digestion 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 digestion pool 10, the bottom of digestion pool 10 is provided with attemperating unit 13,18 of digestion pool 10 and waste liquid pipelines pass through hyperchannel module 5 selectivity and open and close pipeline connection, after the detection system detection finishes, the pipeline connection effluent discharge that hyperchannel module 5 is opened digestion pools 10 and waste liquid pipeline 18.
Principle of work of the present utility model is as follows: the sampling pump system produces negative pressure, to suck in the quantity tube via solenoid valve and hyperchannel module through the water sample that simple filtration is handled, the position that the variation of light signal generating comes the perception water sample to arrive during by the pipeline between light source and the optical receiver according to water sample, and then realize quantitatively measuring of water sample, the sampling pump system produces malleation after quantitatively finishing, with water sample via hyperchannel module and solenoid valve be pushed into ultraviolet clear up with detection system in digestion pool in; Then profit uses the same method and also is taken into first reagent in the digestion pool, begin digestion pool is heated by attemperating unit then, UV-irradiation digestion pool quickening is simultaneously cleared up reaction and is carried out, begin cooling after the reaction by 3-10 minutes clear up, also be taken in the digestion pool second reagent, the 3rd reagent respectively then, begin to carry out optical detection subsequently, measure content of total nitrogen 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 nitrogen on-line monitoring instrument and the parameter configuration in the measuring process by keyboard, mouse or touch-screen, thereby realize the full-automatic reliability service of the total nitrogen on-line monitoring instrument 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 (10)
1. ultraviolet resolution method water quality total nitrogen on-line monitoring instrument is characterized in that described monitor comprises sampling pump system, quantitative system, the hyperchannel sampling system that embedded control system is connected with pipeline successively and ultraviolet is cleared up and detection system; Default control program in the described embedded control system, control sampling pump system, quantitative system, hyperchannel sampling system and ultraviolet are cleared up and detection system work, behind described sampling pump system and the quantitative system quantitative sampling, water sample to be measured enters through the hyperchannel sampling system that ultraviolet is cleared up and detection system, ultraviolet clear up with detection system in water sample to be measured through the irradiation of uviol lamp accelerate with nitrogen carry out valence state unified clear up reaction, and carry out the online detection of total nitrogen.
2. according to the described ultraviolet resolution method of claim 1 water quality total nitrogen on-line monitoring instrument, it 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. according to the described ultraviolet resolution method of claim 2 water quality total nitrogen on-line monitoring instrument, it is characterized in that described sampling pump systematic sampling pump (1) is peristaltic pump or syringe pump.
4. according to the described ultraviolet resolution method of claim 2 water quality total nitrogen on-line monitoring instrument, it 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. according to the described ultraviolet resolution method of claim 1 water quality total nitrogen on-line monitoring instrument, it 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. according to the described ultraviolet resolution method of claim 5 water quality total nitrogen on-line monitoring instrument, 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), waste liquid pipeline (18), the 3rd reagent pipeline (19), the 4th reagent pipeline (20) and water sample pipeline to be measured (21) through solenoid valve (6) selectivity.
7. according to the described ultraviolet resolution method of claim 1 water quality total nitrogen on-line monitoring instrument, it is characterized in that described ultraviolet clear up with detection system be an obturator, comprise digestion pool (10), digestion pool (10) two ends are provided with lower lock block (8), digestion pool (10) outside is provided with at least two uviol lamps (9), one side of digestion pool (10) is provided with detection light source (12), relatively is provided with photodetector (11) at the opposite side of digestion pool (10) with detection light source (12).
8. according to claim 1 or 7 described ultraviolet resolution method water quality total nitrogen on-line monitoring instrument, it is characterized in that described ultraviolet clear up with detection system in, the bottom of digestion pool (10) is provided with attemperating unit (13).
9. according to the described ultraviolet resolution method of claim 7 water quality total nitrogen on-line monitoring instrument, it is characterized in that opening and closing pipeline connection by hyperchannel module (5) selectivity between described digestion pool (10) and waste liquid pipeline (18), after the detection system detection finished, hyperchannel module (5) was opened the pipeline connection effluent discharge of digestion pool (10) and waste liquid pipeline (18).
10. described according to Claim 8 ultraviolet resolution method water quality total nitrogen on-line monitoring instrument, it is characterized in that opening and closing pipeline connection by hyperchannel module (5) selectivity between described digestion pool (10) and waste liquid pipeline (18), after the detection system detection finished, hyperchannel module (5) was opened the pipeline connection effluent discharge of digestion pool (10) and waste liquid pipeline (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201284888U CN202057663U (en) | 2011-04-27 | 2011-04-27 | Online monitoring instrument for total nitrogen in water utilizing ultraviolet digestion method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201284888U CN202057663U (en) | 2011-04-27 | 2011-04-27 | Online monitoring instrument for total nitrogen in water utilizing ultraviolet digestion method |
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| CN202057663U true CN202057663U (en) | 2011-11-30 |
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| CN2011201284888U Expired - Fee Related CN202057663U (en) | 2011-04-27 | 2011-04-27 | Online monitoring instrument for total nitrogen in water utilizing ultraviolet digestion method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692489A (en) * | 2012-06-05 | 2012-09-26 | 广州市怡文环境科技股份有限公司 | High-frequency water quality automatic decomposition determination on-line monitoring instrument |
| CN104597161A (en) * | 2015-02-02 | 2015-05-06 | 四川清和科技有限公司 | Total nitrogen online analyzer |
| CN106769938A (en) * | 2016-12-30 | 2017-05-31 | 中兴仪器（深圳）有限公司 | A kind of total nitrogen in-line analyzer and its detection method |
| CN113670861A (en) * | 2021-08-12 | 2021-11-19 | 力合科技（湖南）股份有限公司 | Total nitrogen analyzer and total nitrogen determination method |
-
2011
- 2011-04-27 CN CN2011201284888U patent/CN202057663U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692489A (en) * | 2012-06-05 | 2012-09-26 | 广州市怡文环境科技股份有限公司 | High-frequency water quality automatic decomposition determination on-line monitoring instrument |
| CN104597161A (en) * | 2015-02-02 | 2015-05-06 | 四川清和科技有限公司 | Total nitrogen online analyzer |
| CN104597161B (en) * | 2015-02-02 | 2016-06-08 | 四川清和科技有限公司 | Total nitrogen in-line analyzer |
| CN106769938A (en) * | 2016-12-30 | 2017-05-31 | 中兴仪器（深圳）有限公司 | A kind of total nitrogen in-line analyzer and its detection method |
| CN113670861A (en) * | 2021-08-12 | 2021-11-19 | 力合科技（湖南）股份有限公司 | Total nitrogen analyzer and total nitrogen determination method |
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Granted publication date: 20111130 Termination date: 20140427 |