CN201527400U - Ammonia nitrogen on-line monitor - Google Patents
Ammonia nitrogen on-line monitor Download PDFInfo
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- CN201527400U CN201527400U CN2009202181716U CN200920218171U CN201527400U CN 201527400 U CN201527400 U CN 201527400U CN 2009202181716 U CN2009202181716 U CN 2009202181716U CN 200920218171 U CN200920218171 U CN 200920218171U CN 201527400 U CN201527400 U CN 201527400U
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Abstract
The utility model provides an ammonia nitrogen on-line monitor which consists of a sampling module, a medicine adding module, a stirring reacting module, a colorimetric module, a controlling module and a reagent storing cabinet, wherein the controlling module controls the running of the sampling module, the medicine adding module, a reactor module and the colorimetric module; man-machine interaction is realized by a display screen and a keyboard; and a sampling pump and a medicine adding pump are peristaltic measuring pumps to be capable of realizing the accurate measurement of the added reagent. The ammonia nitrogen on-line monitor has the differences as follows: the sampling pump adopts a bidirectional peristaltic pump, the medicine adding pump adopts an unidirectional peristaltic measurement pump, the medicine adding module adopts a multiported valve to control the switching of medicine adding; distilled water, screening agent and reaction liquid which are necessary for the reaction are sequentially added into a reaction cup; and a stirrer is used for accelerating the mixing of the reaction mixture during reacting, thereby shortening the reaction time.
Description
Technical field:
The utility model belongs to a kind of online environment monitoring instrument, especially for the online environment monitoring instrument of measuring surface water, pollution source water quality ammonia nitrogen index.
Background technology:
Ammonia-nitrogen content is meant the content of the nitrogen that exists with ammonia or ammonium ion form in the water.Ammonia extensively is present in rivers with the decomposition product of itrogenous organic substance usually at occurring in nature, the lake is marine.In aerobic environment, ammonia can change nitrite in the water, and in oxygen-free environment, the nitrite that exists in the water is reduced to ammonia under microbial action, even continues to change into nitrate.Ammonia nitrogen in the so-called aqueous solution is with free ammonia (non-ionic ammonia, NH
3) or ion ammonia (NH
4 +) nitrogen that exists of form.When ammonia was water-soluble, wherein a part of ammonia and water reaction generated ammonium ion, asynchronous formation hydration ammonia (non-ionic ammonia).
The too high meeting of ammonia-nitrogen content causes the outburst of active blue-green algae in the water, and harm humans is healthy and fish are poisoned.Therefore, ammonia nitrogen content is the index that water body is subjected to the itrogenous organic substance pollution level in the water, must strict control.Along with expanding economy, many commercial production can produce a large amount of ammonia, becoming the ammonia pollution source to environment, all is main sources of ammonia pollution as fertilizer production, nitric acid, coking, coal gas, nitrocellulose, rayon, synthetic rubber, carbide of calcium, fuel, varnish, caustic soda, plating and oil exploitation and petroleum products processing etc.Therefore, very important to the on-line monitoring that carries out ammonia-nitrogen content in the water bodys such as industrial discharge and rivers and lakes, what be badly in need of more simultaneously is that water bodys such as industrial discharge and rivers and lakes are analyzed real-time, the data of the instant content of ammonia nitrogen in the water are provided, to take corresponding measure, the ammonia-nitrogen content of guaranteeing water bodys such as enterprise's qualified discharge and rivers and lakes is in the Environmental security index.
The method of measuring ammonia nitrogen at present mainly contains nessler reagent colourimetry, salicylic acid colourimetry, acid base neutralization titration method, ion electrode method etc.This method adopts classical national standard method: the nessler reagent colourimetry.This method is classified as standard method of analysis by many countries, its ultimate principle is that the ammonia nitrogen that exists with forms such as the ammonia of free state or ammonium ions in the water sample and reactant liquor fully react and generate the yellowish-brown complex compound, this complex compound has good absorption characteristic near 420nm, can analyze ammonia-nitrogen content by this absorption characteristic.The instrument that adopts this method to realize has weak point measuring period, measures advantage accurately.
Summary of the invention:
The purpose of this utility model provides a kind of on-line monitoring instrument that can monitor ammonia nitrogen index in the water, its accuracy of detection can satisfy the water quality pollutant emission monitoring requirement that national environmental protection portion proposes, this apparatus measures cycle is short simultaneously, measured value overcomes the long drawback of sense cycle that has still-process to cause in the manual monitoring accurately and reliably.
For achieving the above object, the technical solution of the utility model is: a kind of ammonia nitrogen on-line monitoring instrument, form by sampling module, dosing module, stirring reaction module, colorimetric module, control module and reagent storage cabinet, the operation of control module control sampling module, dosing module, reactor module and colorimetric module, by display screen, keyboard man-machine interaction, sampling pump in the described sampling module adopts two-way peristaltic pump, and the dosing pump in the dosing module adopts unidirectional wriggling volume pump.
Ammonia nitrogen on-line monitoring instrument of the present utility model, wherein said dosing module is made up of two dosing pumps and four-way valve, and two dosing pumps all are connected with four-way valve.
Ammonia nitrogen on-line monitoring instrument of the present utility model, wherein said stirring reaction module is made up of feed liquor cap, reaction cup, stirrer, and the feed liquor cap is suitable for reading in reaction cup, and reaction cup places on the stirrer.
Ammonia nitrogen on-line monitoring instrument of the present utility model, wherein said control module is made up of controller, external interface and external unit, and its middle controller is made up of motherboard, data acquisition unit and power supply, and external unit comprises keyboard and display screen.
Ammonia nitrogen on-line monitoring instrument of the present utility model also comprises Distilled water bucket, screening agent bucket, reactant liquor bucket and waste liquid barrel, all is stored in the reagent storage cabinet.
The instrument operation is controlled by control module, according to working procedure, send steering order by control module, may command motor and valve events, reach the collection of water sample, the extraction of reagent, the reagent mixing, then finish the colorimetric operation, calculate final ammonia nitrogen value by control module again, water sample pipeline in the sampling module, adopt the reagent pipeline and the reaction chamber in the stirring reaction module of reagent modules and realize that by multiport valve pipeline switches, finally will adopt reagent and water sample successively and join in the reaction chamber, stirring reaction modular belt evenly mixing device reaches abundant simultaneously, the rapid-action purpose, remove still-process, shorten measuring period to a great extent.
Description of drawings: the utility model is made an explanation below in conjunction with accompanying drawing.
Fig. 1 is the structural principle synoptic diagram of the utility model embodiment.
Fig. 2 is the schematic flow sheet of counting automatically of the utility model embodiment.
Heavy black line is a liquid line among Fig. 1, and fine rule is a signal wire, comprises circuits such as signal output, input.
Embodiment:
As shown in Figure 1: the embodiment of ammonia nitrogen on-line monitoring instrument, in the casing of instrument, sampling module, dosing module, stirring reaction module, colorimetric module, control module and reagent storage cabinet are arranged, the operation of control module control instrument, all topworkies comprise: sampling pump 6, multiport valve 11, dosing pump 12, dosing pump 13, stirrer 16, bleeder valve 17, bleeder valve 19 change the state of topworks by the output control signal by control module.Control module also reads the ratio chrominance signal that is obtained by the colorimetric chamber by signal wire simultaneously, as the important evidence of calculating the ammonia nitrogen value.
At first tell about sampling module, mainly comprise overflow cup 5, sampling pump 6, filtrator 7, when controller 4 control sampling pumps 6 started, water sample was at first finished the water sample filter process through filtrator 7, enter overflow cup 5, it mainly acts on is to provide more reliable and more stable water sample for analysis.The stable assurance instrument response analysis operation of this sampling module.
Above-mentioned sampling pump adopts the accurate measurement peristaltic pump, adopts supporting pump line, selects different sampling pumps for use according to the traffic requirement of sampling.Because pump line is limited serviceable life, can determine the serviceable life of pump line according to the running frequency of instrument, the replacement cycle of pump line is provided for the user.
And the dosing module is mainly finished the extraction of reagent, reagent storage is in screening agent bucket 8, Distilled water bucket 9, reactant liquor bucket 10, finish the extraction work of reagent by dosing pump 12, dosing pump 13, by control four-way valve conducting screening agent, distilled water, reactant liquor successively, reagent is extracted in the reaction chamber.
The stirring reaction module is mainly by feed liquor cap 14, reaction cup 15, stirrer 16, finishes the extraction of reagent by the dosing module, and the reagent that extracts is joined in the reaction cup 15 successively, make stirrer 16 actions in the time of dosing, the mixing of guarantee reagent reacts completely, and guarantees the measuring accuracy of instrument.After reaction is finished, make the bleeder valve action, the reaction mixture after the reaction is injected cuvette 20.
The colorimetric module is responsible for the reaction mixture that is retained in the cuvette 18 is carried out colorimetric, finish final signal measurement, be equipped with supporting signal processing apparatus (signal condition multiplying arrangement), realize the collection of signal by control module, need reaction mixture is left standstill a period of time before the colorimetric, carry out the colorimetric process afterwards, control module is finished the collection of data, according to the actual ammonia nitrogen value of curve calculation of demarcating.
Control module is made up of controller, external interface and external unit, as Fig. 1 middle controller 4 are control cores of instrument, form by motherboard, data acquisition unit and power supply, can be according to the sampling quantity of stipulating in the kernel program, according to set sampling order, extract reagent by the accurate measurement of wriggling volume pump.External unit mainly comprises keyboard 1 and display screen 2, and information such as the state of instrument, data show the user by display screen 2, realizes various feature operations by keyboard 1, and this is the function that peripheral hardware is partly finished.
The reagent storage cabinet is used for depositing Distilled water bucket, screening agent bucket, reactant liquor bucket and waste liquid barrel, and the reagent bucket is neatly discharging in the reagent storage cabinet, and the dosing module can directly be got reagent from the reagent bucket.
As shown in Figure 1, external interface 3, the peripheral interface that is instrument comprises DB25 LPT, (4～20) mA signal output and RS232 communication interface, can finish the printing function of Monitoring Data and state, the output function of analog signals, the reception and the transmission of serial ports instruction by external relevant device, realization is mutual with the outside.
The operational mode of instrument has four kinds: cyclic pattern, fixed point pattern, external control pattern, manual mode.
Cyclic pattern adopts sets the cycle of operation, and as 1 hour, instrument can need not manually-operated according to the periodic duty of setting.
Fixed point pattern and cyclic pattern are similar, and the parameter of setting is the monitoring time point, and as 1:00, instrument promptly by the time point operation of setting, need not manually-operated.
In the external control pattern, instrument is accepted external command by the RS232 interface, and instrument moves according to external command, instruction such as mainly comprise operation, stop.
The manual mode instrument can be carried out according to the manual keyboard operation, and the operation order determines to have extraordinary dirigibility by the operator, and this pattern mainly is used in occasions such as trouble spot monitoring, artificial experiment.
The major function that instrument provides comprises: curvature correction, manual operation, operation automatically, form, parameter are provided with etc.
Tell about the flow process of counting automatically of instrument below, as shown in Figure 2.When instrument was counted automatically, reagent was carried at first extractive distillation water flushing in advance, guaranteed that the reagent accurate measurement is reliable when surveying number, will mention to such an extent that reagent is drained as waste liquid in advance, surveyed number for metering and prepared; Then begin water sampling, water sample is joined in the reaction cup, use water sample flushing reaction cup by the overflow cup; Extractive distillation water washes then, removes the various interference between twice measurement; Then begin to extract water sample, reagent, will react required water sample, reagent joins in the reaction cup, stirrer is adding reagent mixing simultaneously, fully reaction; Put a part of reaction mixture earlier after reacting completely, join in the cuvette, the flushing cuvette will remain reaction mixture after having washed and all join in the cuvette, leave standstill colorimetric, all reaction mixtures of draining afterwards.The signal that collects by computing, is finished the one-shot measurement process.
Claims (5)
1. ammonia nitrogen on-line monitoring instrument, it is characterized in that forming by sampling module, dosing module, stirring reaction module, colorimetric module, control module and reagent storage cabinet, the operation of control module control sampling module, dosing module, stirring reaction module and colorimetric module, sampling pump in the described sampling module adopts two-way peristaltic pump, and the dosing pump in the dosing module adopts unidirectional wriggling volume pump.
2. ammonia nitrogen on-line monitoring instrument as claimed in claim 1 is characterized in that the dosing module is made up of two dosing pumps and four-way valve, and two dosing pumps all are connected with four-way valve.
3. the ammonia nitrogen on-line monitoring instrument described in claim 1 or 2, it is characterized in that: described stirring reaction module is made up of feed liquor cap, reaction cup, stirrer, and the feed liquor cap is suitable for reading in reaction cup, and reaction cup places on the stirrer.
4. ammonia nitrogen on-line monitoring instrument as claimed in claim 3, it is characterized in that: described control module is made up of controller, external interface and external unit, its middle controller is made up of motherboard, data acquisition unit and power supply, and external unit comprises keyboard and display screen.
5. ammonia nitrogen on-line monitoring instrument as claimed in claim 4 is characterized in that: monitor also comprises Distilled water bucket, screening agent bucket, reactant liquor bucket and waste liquid barrel, all is stored in the reagent storage cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202181716U CN201527400U (en) | 2009-10-20 | 2009-10-20 | Ammonia nitrogen on-line monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202181716U CN201527400U (en) | 2009-10-20 | 2009-10-20 | Ammonia nitrogen on-line monitor |
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| Publication Number | Publication Date |
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| CN201527400U true CN201527400U (en) | 2010-07-14 |
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| CN2009202181716U Expired - Lifetime CN201527400U (en) | 2009-10-20 | 2009-10-20 | Ammonia nitrogen on-line monitor |
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| CN (1) | CN201527400U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338805A (en) * | 2010-07-22 | 2012-02-01 | 李正挺 | Instrument and method for automatically analyzing ammonia nitrogen in laboratory |
| CN102374989A (en) * | 2010-08-20 | 2012-03-14 | 北京吉天仪器有限公司 | Automatic analyzer for determining ammonia nitrogen in water and automatic analytic method thereof |
| CN103048481A (en) * | 2013-01-17 | 2013-04-17 | 北京吉天仪器有限公司 | Automatic analyzer for detecting ammonia nitrogen in environmental water and method for detecting ammonia nitrogen in environmental water |
| CN103245697A (en) * | 2013-04-18 | 2013-08-14 | 姜堰市华晨仪器有限公司 | Ammonia nitrogen on-line monitoring instrument |
| CN104849422A (en) * | 2015-03-11 | 2015-08-19 | 中国农业大学 | Ammonia nitrogen on-line monitoring system and method thereof |
| CN105547412A (en) * | 2015-12-10 | 2016-05-04 | 四川理工学院 | Reagent metering device for ammonia nitrogen detection based on machine vision |
| CN105606593A (en) * | 2015-12-10 | 2016-05-25 | 四川理工学院 | Ammonia nitrogen image detection device |
| CN107064121A (en) * | 2016-12-29 | 2017-08-18 | 核工业北京化工冶金研究院 | The device of uranium concentration in a kind of application colorimetric method on-line checking adsorption tail liquid |
| CN107462572A (en) * | 2016-07-12 | 2017-12-12 | 伦慧东 | A kind of photocatalyst air dissipation function comparison system |
-
2009
- 2009-10-20 CN CN2009202181716U patent/CN201527400U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338805A (en) * | 2010-07-22 | 2012-02-01 | 李正挺 | Instrument and method for automatically analyzing ammonia nitrogen in laboratory |
| CN102338805B (en) * | 2010-07-22 | 2013-05-22 | 李正挺 | Instrument and method for automatically analyzing ammonia nitrogen in laboratory |
| CN102374989A (en) * | 2010-08-20 | 2012-03-14 | 北京吉天仪器有限公司 | Automatic analyzer for determining ammonia nitrogen in water and automatic analytic method thereof |
| CN103048481A (en) * | 2013-01-17 | 2013-04-17 | 北京吉天仪器有限公司 | Automatic analyzer for detecting ammonia nitrogen in environmental water and method for detecting ammonia nitrogen in environmental water |
| CN103048481B (en) * | 2013-01-17 | 2013-12-04 | 北京吉天仪器有限公司 | Automatic analyzer for detecting ammonia nitrogen in environmental water and method for detecting ammonia nitrogen in environmental water |
| CN103245697A (en) * | 2013-04-18 | 2013-08-14 | 姜堰市华晨仪器有限公司 | Ammonia nitrogen on-line monitoring instrument |
| CN104849422A (en) * | 2015-03-11 | 2015-08-19 | 中国农业大学 | Ammonia nitrogen on-line monitoring system and method thereof |
| CN105547412A (en) * | 2015-12-10 | 2016-05-04 | 四川理工学院 | Reagent metering device for ammonia nitrogen detection based on machine vision |
| CN105606593A (en) * | 2015-12-10 | 2016-05-25 | 四川理工学院 | Ammonia nitrogen image detection device |
| CN107462572A (en) * | 2016-07-12 | 2017-12-12 | 伦慧东 | A kind of photocatalyst air dissipation function comparison system |
| CN107064121A (en) * | 2016-12-29 | 2017-08-18 | 核工业北京化工冶金研究院 | The device of uranium concentration in a kind of application colorimetric method on-line checking adsorption tail liquid |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100714 |
|
| CX01 | Expiry of patent term |