CN1632525A - On-line photocatalysis total phosphorus and total nitrogen counteraction analyzer - Google Patents
On-line photocatalysis total phosphorus and total nitrogen counteraction analyzer Download PDFInfo
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- CN1632525A CN1632525A CN 200410075467 CN200410075467A CN1632525A CN 1632525 A CN1632525 A CN 1632525A CN 200410075467 CN200410075467 CN 200410075467 CN 200410075467 A CN200410075467 A CN 200410075467A CN 1632525 A CN1632525 A CN 1632525A
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Abstract
This invention discloses an on-line photocatalysis total nitrogen and phosphor analyzer, which comprises sample-in unit and is characterized by comprising the analysis unit to degrade the organic phosphor and nitrogen and the nitrogen and phosphor test unit to automatically test. The advantages of this invention are that it is suitable to on-line test the organic phosphor, active phosphor, organic nitrogen or active nitrogen in all kinds of water.
Description
Technical field
The present invention relates to the counteraction analyzer device of total phosphorus and total nitrogen in a kind of water body, a kind of TiO of utilization more specifically says so
2Photocatalytic oxidation decomposes total phosphorus and total nitrogen in the water body, and detects the device of its content.
Background technology
The height of total phosphorus and total nitrogen concentration has directly reflected the eutrophication situation of water quality in the water body, can detect with the blue spectrophotometric method of phosphorus molybdenum for the active phosphorus composition in the total phosphorus now, but organophosphorus composition wherein can not directly detect, can only be with potassium persulfate as oxygenant, the high temperature humidifying is oxidized to the active phosphorus composition, detects with the blue spectrophotometric method of phosphorus molybdenum again; For total nitrogen, process is similar, active nitrogen can directly be used diazonium-azo colorimetric method for determining, the still handy high temperature of organic nitrogen is nitrated, with diazonium-azo colorimetric method for determining, a whole cover process is not only complicated and discontinuous, and introduces error easily, cause numerical value inaccurate, analysis result is bigger to difference under the different condition.The continuous injection of existing human is decomposed total phosphorus and total nitrogen, uses potassium persulfate to make oxygenant, though result's precision increases, but oxidation efficiency is really not high, can not decompose organophosphorus and organic nitrogen effectively, causes numerical value on the low side, simultaneously still need consume oxygenant, be unfavorable for online detection; The human UV-irradiation is also arranged, decompose organophosphorus and organic nitrogen, though realized on-line determination, decomposition efficiency is still very low, also needs to add certain oxygenant simultaneously.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of easy, photocatalysis total phosphorus and total nitrogen counteraction analyzer that precision Gao Bingneng is implemented in line analysis.
Basic design of the present invention is to adopt optically catalytic TiO 2 degrading organic phosphor and organic nitrogen, decomposes active phosphorus and active nitrogen that the back generates, detects automatically respectively by spectrophotometric method, realizes efficiently decomposing high Precision Detection.
The nitrogen phosphorus detecting unit that the present invention includes sample injection unit, is used for the resolving cell of degrading organic phosphor and organic nitrogen and can realizes detecting automatically.
Described sample injection unit comprises sample introduction pipeline and detergent line;
Described resolving cell comprises that uviol lamp and inwall are coated with the quartz glass of titania around pipe;
Described nitrogen phosphorus detecting unit comprises nitrogen and phosphorus spectrophotometric detector and the valve that is used for switching between the two.
Advantage of the present invention is easy to operate, the decomposition efficiency height, and the accuracy of detection height need not oxidizer, is fit to organophosphorus/active phosphorus, organic nitrogen/active nitrogen in all kinds of water bodys of on-the-spot online detection.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the sectional drawing of quartz glass around pipe.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing and by specific embodiment.
The nitrogen phosphorus detecting unit that the present invention includes sample injection unit, is used for the resolving cell of degrading organic phosphor and organic nitrogen and can realizes detecting automatically.Wherein, sample injection unit is made up of micro-filtration 1, pneumatic pump 2, T-valve 3, scavenging pump 4, sampling pump 5 and detergent line C2; Resolving cell is that the quartz glass that 365nm uviol lamp 6 and inwall are coated with titania is formed around pipe 7 and antiultraviolet shell 8 by wavelength; Detecting unit is made up of the nitrogen of commercial sales and phosphorus two spectrophotometric detectors 10,11 and T-valve 9.
As shown in Figure 1, when carrying out sample detection, open sample introduction pipeline C1 by T-valve 3 earlier, close detergent line C2.Water sample to be measured is removed the bulky grain suspension through micro-filtration 1, air mixes with water sample under the effect of pump 2, water sample under the effect of sampling pump 5 by the quartz glass on the 365nm wavelength uviol lamp 7 around pipe 6, this glass tube B inwall evenly scribbles TiO 2 coating film A, as shown in Figure 2.Total phosphorus in the water sample and total nitrogen are broken down into active phosphorus and active nitrogen under photochemical catalytic oxidation.Water sample after the decomposition is divided into two-way through T-valve 9, and one the tunnel is analyzed in Nitrogen detector 10 after mixing with nitrogen developer 12; The back is mixed on another road with phosphorus developer 13 analyzed in P detector 11, realized total phosphorus and total nitrogen in the water body of on-line analysis simultaneously.Also can measure total phosphorus or total nitrogen separately by regulating T-valve 9.Whole resolving cell is closed in the antiultraviolet shell 8.After a water sample analysis finishes, regulate T-valve 3, close sample introduction pipeline C1, open detergent line C2, deionized water is the cleaning equipment pipeline under the effect of scavenging pump 4, waits for the mensuration of next sample.The TiO 2 coating film quartz ampoule can be used as consumables and is disassembled, and adopts ripe metatitanic acid four fourth fat-alcohol-waters, and sol-gel process is plated film in quartz ampoule, 500 ℃ of following calcinations got final product in 6 hours finished product.
The present invention measures the total phosphorus scope at 0.02-100mg/L, total phosphorus resolution ratio＞98%, and reaction is not subjected to reaction temperatures affect, detection time＜15 minute; The total nitrogen scope is at 0.01-50mg/L, total nitrogen resolution ratio 100%, and reaction is not subjected to reaction temperatures affect, detection time＜15 minute.
Claims (5)
1. an online photocatalysis total phosphorus and total nitrogen counteraction analyzer comprises sample injection unit, it is characterized in that the nitrogen phosphorus detecting unit that it also comprises the resolving cell that is used for degrading organic phosphor and organic nitrogen and can realize detecting automatically.
2. counteraction analyzer according to claim 1 is characterized in that described sample injection unit comprises sample introduction pipeline and detergent line.
3. counteraction analyzer according to claim 1 is characterized in that described resolving cell comprises that uviol lamp and quartz glass are around pipe.
4. counteraction analyzer according to claim 1 is characterized in that described nitrogen phosphorus detecting unit comprises nitrogen and phosphorus spectrophotometric detector and the valve that is used for switching between the two.
5. according to claim 1 or 3 described counteraction analyzers, it is characterized in that described quartz glass is coated with titania around inside pipe wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410075467 CN1632525A (en) | 2004-12-19 | 2004-12-19 | On-line photocatalysis total phosphorus and total nitrogen counteraction analyzer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410075467 CN1632525A (en) | 2004-12-19 | 2004-12-19 | On-line photocatalysis total phosphorus and total nitrogen counteraction analyzer |
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| CN1632525A true CN1632525A (en) | 2005-06-29 |
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| CN 200410075467 Pending CN1632525A (en) | 2004-12-19 | 2004-12-19 | On-line photocatalysis total phosphorus and total nitrogen counteraction analyzer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082617B (en) * | 2007-05-25 | 2011-04-06 | 西安交通大学 | Light-catalyzed reaction negative-pressure loop circuit automatically testing system |
| CN102235991A (en) * | 2010-05-07 | 2011-11-09 | 中国科学院电子学研究所 | Integrated total phosphorus and total nitrogen micro sensor system |
| CN101592670B (en) * | 2008-05-29 | 2012-09-19 | Bltec韩国株式会社 | Automatic analysis quantitative measurement method and automatic analysis quantitative measuring apparatus |
| CN102749465A (en) * | 2012-06-26 | 2012-10-24 | 苏州国环环境检测有限公司 | Digestion and colorimetric analysis system for test of standard addition recovery rate |
| CN103033485A (en) * | 2011-09-29 | 2013-04-10 | 中科天融(北京)科技有限公司 | Water total-phosphorus and total-nitrogen online monitoring apparatus |
| CN105251740A (en) * | 2015-09-30 | 2016-01-20 | 太仓创造电子有限公司 | Device and method for eliminating memory effect of water quality online analyzer |
| CN105372238A (en) * | 2015-12-10 | 2016-03-02 | 中国科学院西北高原生物研究所 | Automated discrete analyzer |
| CN105403525A (en) * | 2015-12-18 | 2016-03-16 | 合肥市恒昌自动化控制有限责任公司 | Total phosphorus total nitrogen intelligent measuring and analyzing method |
| CN113029981A (en) * | 2021-03-08 | 2021-06-25 | 长春工程学院 | Method for detecting sludge total phosphorus of urban sewage plant |
-
2004
- 2004-12-19 CN CN 200410075467 patent/CN1632525A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082617B (en) * | 2007-05-25 | 2011-04-06 | 西安交通大学 | Light-catalyzed reaction negative-pressure loop circuit automatically testing system |
| CN101592670B (en) * | 2008-05-29 | 2012-09-19 | Bltec韩国株式会社 | Automatic analysis quantitative measurement method and automatic analysis quantitative measuring apparatus |
| CN102235991A (en) * | 2010-05-07 | 2011-11-09 | 中国科学院电子学研究所 | Integrated total phosphorus and total nitrogen micro sensor system |
| CN102235991B (en) * | 2010-05-07 | 2013-07-24 | 中国科学院电子学研究所 | Integrated total phosphorus and total nitrogen micro sensor system |
| CN103033485A (en) * | 2011-09-29 | 2013-04-10 | 中科天融(北京)科技有限公司 | Water total-phosphorus and total-nitrogen online monitoring apparatus |
| CN102749465A (en) * | 2012-06-26 | 2012-10-24 | 苏州国环环境检测有限公司 | Digestion and colorimetric analysis system for test of standard addition recovery rate |
| CN105251740A (en) * | 2015-09-30 | 2016-01-20 | 太仓创造电子有限公司 | Device and method for eliminating memory effect of water quality online analyzer |
| CN105372238A (en) * | 2015-12-10 | 2016-03-02 | 中国科学院西北高原生物研究所 | Automated discrete analyzer |
| CN105372238B (en) * | 2015-12-10 | 2018-08-03 | 中国科学院西北高原生物研究所 | Full-automatic interruption chemical analyzer |
| CN105403525A (en) * | 2015-12-18 | 2016-03-16 | 合肥市恒昌自动化控制有限责任公司 | Total phosphorus total nitrogen intelligent measuring and analyzing method |
| CN113029981A (en) * | 2021-03-08 | 2021-06-25 | 长春工程学院 | Method for detecting sludge total phosphorus of urban sewage plant |
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Open date: 20050629 |