CN103033485A - Water total-phosphorus and total-nitrogen online monitoring apparatus - Google Patents
Water total-phosphorus and total-nitrogen online monitoring apparatus Download PDFInfo
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- CN103033485A CN103033485A CN2011102909797A CN201110290979A CN103033485A CN 103033485 A CN103033485 A CN 103033485A CN 2011102909797 A CN2011102909797 A CN 2011102909797A CN 201110290979 A CN201110290979 A CN 201110290979A CN 103033485 A CN103033485 A CN 103033485A
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Abstract
The invention relates to a water total-phosphorus and total-nitrogen online monitoring apparatus, and belongs to the technical field of environment monitoring. The apparatus comprises a touch screen display system, a CPU control system, a solution inlet system, a terminal valve, a metering device, a high-pressure digestion system, a detector and a light source system, the touch screen display system controls the CPU control system to carry out solution inlet, temperature control, AD acquisition and the like, a solution is extracted and discharged by the solution inlet system under the control of the CPU control system, the terminal valve is placed at the lower part of the metering device to complete the switching of flow channels, the metering device cooperates with the solution inlet system to complete the quantification of the solution, the high-pressure digestion system completes the digestion and the reaction of a sample, and the detector and the light source system are positioned at two sides of the high-pressure digestion system to complete the colorimetric detection. The water total-phosphorus and total-nitrogen online monitoring apparatus can realize the continuous online monitoring of the concentrations of total phosphorus and total nitrogen in water, has the characteristics of high precision, high sensitivity, high efficiency, adjustment convenience and the like, and is suitable for monitoring the total phosphorus and the total nitrogen in various water sources.
Description
Technical field:
The present invention relates to a kind of total phosphorus and total nitrogen water quality on-line monitoring instrument device, be specifically related to the method and structure of total phosphorus and total nitrogen water quality on-line monitoring instrument device.
Background technology:
Phosphorus in the water body is a kind of key element that algal grown needs, and excessive phosphorus is to cause the filthy foreign odor of water body, makes lake generation eutrophication and bay the main cause of red tide occur.Total nitrogen refers to the total amount of the nitrogen (ammonia nitrogen, nitrate nitrogen, nitrite nitrogen and various organic nitrogen) of various forms in the water body, is one of important indicator of the reflection suffered pollution level of water body and lake, reservoir water body Eutrophic Extent.The increase of nitrogen content will cause Water quality to descend in the water body.Especially for lake, reservoir water body, because the increase of nitrogen content, make planktonic organism and algal bloom in the water body and consume dissolved oxygen DO in the water, thereby the eutrophication and the Water quality that accelerate lake, reservoir water body worsen.
The two-in-one instrument of total phosphorus and total nitrogen mainly is to rely on import equipment at present, domestic mainly is as main take the separate unit instrument, and external instrument is expensive, and in order better to satisfy the environment measuring requirement, developing low-cost, the two-in-one instrument of highly sensitive domestic total phosphorus and total nitrogen are extremely urgent.
Summary of the invention:
The objective of the invention is to invent a kind of online two-in-one analytical instrument of total phosphorus and total nitrogen fast detecting, by special light channel structure, can detect simultaneously total phosphorus and two indexs of total nitrogen simultaneously, realized low cost, high-level efficiency, highly sensitive online total phosphorus and total nitrogen instrument development, the dependence that reduces external instrument has been brought positive role.
The device that the present invention proposes is by by touch screen display system, system control cpu, the feed liquor system, the island valve, measuring apparatus, the high-pressure digestion system, detecting device and light-source system form, described touch screen display system control system control cpu carries out a series of feed liquors, the actions such as temperature control and AD collection, described feed liquor system carries out solution and extracts and discharging under the control of system control cpu, described island valve places the bottom of measuring apparatus, finishing the fluid passage switches, described measuring apparatus cooperates the feed liquor system to finish the quantitative of solution, described high-pressure digestion system finishes clearing up of sample and reacts, described detecting device and light-source system are positioned at high-pressure digestion system both sides, finish colorimetric detection.
The present invention has following characteristics:
Embodiment:
Fig. 1 is principle of instrument figure of the present invention
Fig. 2 is optical detection schematic diagram of the present invention
As shown in Figure 1, instrument monitoring flow process of the present invention is: under the effect of touch screen display system and system control cpu, react by feed liquor system, island valve, measuring apparatus extraction water sample and reagent, under the condition that the high-pressure digestion system is cleared up, carry out colorimetric detection via detecting device and light-source system, then calculate the concentration of total phosphorus and total nitrogen.
Touch screen display system of the present invention is comprised of ARM7 cun touch-screen, finishes the control of instrument flow process, signals collecting, computing and the output of 485 signals.
System control cpu of the present invention is comprised of C8051 single-chip microcomputer, A/D convertor circuit, serial communication circuit, signal acquisition circuit, IO expanded circuit and circuit for controlling motor, realizes the control of instrument flow process.
Feed liquor of the present invention system is comprised of peristaltic pump and air valve, and peristaltic pump is that the peristaltic pump tube of 4mm is connected with gauge line with air valve by external diameter.
Island of the present invention valve is six microscler passage valve bodies, has 9 connecting holes, and 6 holes of side are used for extracting various reagent or sample, connect neutralizer, oxygenant, reducing solution and developer by two T-valve outside the valve of island.
Measuring apparatus of the present invention is that quartz glass tube, red luminotron and the photoelectric cell receiving tube of 10mm forms by diameter.
High-pressure digestion of the present invention system is comprised of quartz glass digestion pool and high-pressure valve, under the effects of 120 degree, sample is cleared up.
Detecting device of the present invention is dual-detector, and one is used for the total phosphorus detection, and sensitive in the near-infrared region response ratio, one is total Nitrogen detector, sensitive in the ultraviolet region response ratio.
As shown in Figure 2, light-source system of the present invention, light emitting diode and xenon lamp by 880nm form, xenon lamp passes through coupling fiber, under the effect of convex lens, form double light path with the light emitting diode of 880nm, wherein 880nm is used for the total phosphorus detection, and xenon lamp is used for total nitrogen by the 220nm optical filter and detects.
Claims (9)
1. total phosphorus and total nitrogen water quality on-line monitoring instrument device, it is characterized in that device is by touch screen display system, system control cpu, the feed liquor system, the island valve, measuring apparatus, the high-pressure digestion system, detecting device and light-source system form, described touch screen display system control system control cpu carries out a series of feed liquors, the actions such as temperature control and AD collection, described feed liquor system carries out solution and extracts and discharging under the control of system control cpu, described island valve places the bottom of measuring apparatus, finishing the fluid passage switches, described measuring apparatus cooperates the feed liquor system to finish the quantitative of solution, described high-pressure digestion system finishes clearing up of sample and reacts, described detecting device and light-source system are positioned at high-pressure digestion system both sides, the instrument total phosphorus detects and adopts high temperature high pressure enclosed clearing up-phosphorus molybdenum blue spectrophotometry, and total nitrogen adopts high temperature high pressure enclosed clearing up-Ultraviolet Photometric Method.
2. touch screen display system according to claim 1 is characterized in that described touch screen display system is comprised of ARM7 cun touch-screen, finishes the control of slave computer control panel and the output of 485 signals.
3. system control cpu according to claim 1, it is characterized in that described system control cpu is comprised of C8051 single-chip microcomputer, A/D convertor circuit, serial communication circuit, signal acquisition circuit, IO expanded circuit and circuit for controlling motor, realize the control of instrument flow process.
4. feed liquor according to claim 1 system is characterized in that described feed liquor system is comprised of peristaltic pump and air valve, and peristaltic pump is that the peristaltic pump tube of 4mm is connected with gauge line with air valve by external diameter.
5. island according to claim 1 valve, it is characterized in that described island valve is six microscler passage valve bodies, have 9 connecting holes, 6 holes of side are used for extracting various reagent or sample, connect neutralizer, oxygenant, reducing solution and developer by two T-valve outside the valve of island.
6. measuring apparatus according to claim 1 is characterized in that described measuring apparatus is that quartz glass tube, red luminotron and the photoelectric cell receiving tube of 10mm forms by diameter.
7. high-pressure digestion according to claim 1 system is characterized in that described high-pressure digestion system is comprised of quartz glass digestion pool and high-pressure valve, under the effects of 120 degree, clears up sample.
8. detecting device according to claim 1 is characterized in that described detecting device is dual-detector, and one is used for the total phosphorus detection, and sensitive in the near-infrared region response ratio, one is total Nitrogen detector, sensitive in the ultraviolet region response ratio.
9. light-source system according to claim 1, it is characterized in that described light-source system is comprised of light emitting diode and the xenon lamp of 880nm, xenon lamp passes through coupling fiber, under the effect of convex lens, form double light path with the light emitting diode of 880nm, wherein 880nm is used for the total phosphorus detection, and xenon lamp is used for total nitrogen by the 220nm optical filter and detects.
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| CN2011102909797A CN103033485A (en) | 2011-09-29 | 2011-09-29 | Water total-phosphorus and total-nitrogen online monitoring apparatus |
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| CN2011102909797A CN103033485A (en) | 2011-09-29 | 2011-09-29 | Water total-phosphorus and total-nitrogen online monitoring apparatus |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344778A (en) * | 2013-06-17 | 2013-10-09 | 孙卫国 | Microsample injection apparatus and sample injection method |
| CN103913448A (en) * | 2014-04-18 | 2014-07-09 | 中国科学院生态环境研究中心 | Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction |
| CN103983597A (en) * | 2014-06-06 | 2014-08-13 | 力合科技（湖南）股份有限公司 | Detection method and system for total nitrogen and total phosphorus |
| CN104764726A (en) * | 2015-04-17 | 2015-07-08 | 中国科学院重庆绿色智能技术研究院 | Water quality monitoring instrument and method |
| CN105021542A (en) * | 2015-07-03 | 2015-11-04 | 深圳世绘林科技有限公司 | Water quality automatic testing flow by spectrophotometry method |
| CN105158054A (en) * | 2015-06-05 | 2015-12-16 | 浙江海洋学院 | Method for determining total phosphorus concentration of seawater sediment by microwave digestion adopting small sample amount of potassium persulphate |
| CN105158185A (en) * | 2015-09-11 | 2015-12-16 | 深圳世绘林科技有限公司 | Water quality online monitoring device based on optical integrating sphere |
| CN105300900A (en) * | 2015-09-30 | 2016-02-03 | 王竞 | Liquid analysis method and device of spectrophotometry test with digestion |
| CN105466856A (en) * | 2015-12-30 | 2016-04-06 | 深圳市绿恩环保技术有限公司 | Water-quality aniline on-line detecting device and aniline detecting system |
| CN106153435A (en) * | 2016-07-28 | 2016-11-23 | 中国广州分析测试中心 | A kind of pressure, the continuous digestion system of adjustable-flow |
| CN106596880A (en) * | 2016-11-11 | 2017-04-26 | 江苏大学 | Stepped dosing method and device for chemical oxygen demand detection |
| CN108072648A (en) * | 2016-11-15 | 2018-05-25 | 杭州绿洁水务科技股份有限公司 | A kind of micro-fluidic chip integrated system for being used to detect total nitrogen total phosphorus |
| CN108226065A (en) * | 2017-12-29 | 2018-06-29 | 江苏汇环环保科技有限公司 | A kind of high-precision DEK multiparameter water quality analyzers |
| CN110596024A (en) * | 2019-09-19 | 2019-12-20 | 广东盈峰科技有限公司 | Turbidity compensation method for automatic online total nitrogen monitoring and total nitrogen monitoring method |
| CN110988097A (en) * | 2019-10-31 | 2020-04-10 | 温州医科大学 | Soft measurement method for nitrogen stable isotope abundance of nitrate in water body |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344778A (en) * | 2013-06-17 | 2013-10-09 | 孙卫国 | Microsample injection apparatus and sample injection method |
| CN103913448B (en) * | 2014-04-18 | 2017-01-18 | 中国科学院生态环境研究中心 | Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction |
| CN103913448A (en) * | 2014-04-18 | 2014-07-09 | 中国科学院生态环境研究中心 | Real-time dynamic detection system for hydroxyl radicals generated by photo-catalytic reaction |
| CN103983597A (en) * | 2014-06-06 | 2014-08-13 | 力合科技（湖南）股份有限公司 | Detection method and system for total nitrogen and total phosphorus |
| CN103983597B (en) * | 2014-06-06 | 2017-07-07 | 力合科技（湖南）股份有限公司 | The detection method and system of a kind of total nitrogen and total phosphorus |
| CN104764726A (en) * | 2015-04-17 | 2015-07-08 | 中国科学院重庆绿色智能技术研究院 | Water quality monitoring instrument and method |
| CN105158054A (en) * | 2015-06-05 | 2015-12-16 | 浙江海洋学院 | Method for determining total phosphorus concentration of seawater sediment by microwave digestion adopting small sample amount of potassium persulphate |
| CN105021542B (en) * | 2015-07-03 | 2019-04-05 | 深圳世绘林科技有限公司 | A kind of spectrophotometry water quality auto test flow |
| CN105021542A (en) * | 2015-07-03 | 2015-11-04 | 深圳世绘林科技有限公司 | Water quality automatic testing flow by spectrophotometry method |
| CN105158185A (en) * | 2015-09-11 | 2015-12-16 | 深圳世绘林科技有限公司 | Water quality online monitoring device based on optical integrating sphere |
| CN105300900A (en) * | 2015-09-30 | 2016-02-03 | 王竞 | Liquid analysis method and device of spectrophotometry test with digestion |
| CN105466856A (en) * | 2015-12-30 | 2016-04-06 | 深圳市绿恩环保技术有限公司 | Water-quality aniline on-line detecting device and aniline detecting system |
| CN106153435B (en) * | 2016-07-28 | 2018-10-02 | 中国广州分析测试中心 | A kind of pressure, the continuous digestion system of adjustable-flow |
| CN106153435A (en) * | 2016-07-28 | 2016-11-23 | 中国广州分析测试中心 | A kind of pressure, the continuous digestion system of adjustable-flow |
| CN106596880B (en) * | 2016-11-11 | 2018-12-14 | 江苏大学 | A kind of staged adding method thereof and device for chemical oxygen demand detection |
| CN106596880A (en) * | 2016-11-11 | 2017-04-26 | 江苏大学 | Stepped dosing method and device for chemical oxygen demand detection |
| CN108072648A (en) * | 2016-11-15 | 2018-05-25 | 杭州绿洁水务科技股份有限公司 | A kind of micro-fluidic chip integrated system for being used to detect total nitrogen total phosphorus |
| CN108072648B (en) * | 2016-11-15 | 2024-04-09 | 杭州绿洁科技股份有限公司 | Microfluidic chip integrated system for detecting total nitrogen and total phosphorus |
| CN108226065A (en) * | 2017-12-29 | 2018-06-29 | 江苏汇环环保科技有限公司 | A kind of high-precision DEK multiparameter water quality analyzers |
| CN110596024A (en) * | 2019-09-19 | 2019-12-20 | 广东盈峰科技有限公司 | Turbidity compensation method for automatic online total nitrogen monitoring and total nitrogen monitoring method |
| CN110988097A (en) * | 2019-10-31 | 2020-04-10 | 温州医科大学 | Soft measurement method for nitrogen stable isotope abundance of nitrate in water body |
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Application publication date: 20130410 |