CN2545608Y - On-line automatic ammoniacal nitrogen monitor - Google Patents
On-line automatic ammoniacal nitrogen monitor Download PDFInfo
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- CN2545608Y CN2545608Y CN 02235018 CN02235018U CN2545608Y CN 2545608 Y CN2545608 Y CN 2545608Y CN 02235018 CN02235018 CN 02235018 CN 02235018 U CN02235018 U CN 02235018U CN 2545608 Y CN2545608 Y CN 2545608Y
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- reactor
- absorption cell
- automonitors
- ammoniacal nitrogen
- ammonia nitrogen
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Abstract
The utility model discloses an on-line automatic ammoniacal nitrogen monitor, which comprises a reactor, an absorption cell, a conductivity meter and an apparatus control device. In particular a conveying pipe for conveying the ammoniacal nitrogen is arranged between the reactor and the absorption cell. An electrode which is connected with the conductivity meter and is used for measuring the conductance value is arranged in the absorption cell. The utility model only needs to be connected with the measured water sample and can automatically carry out the intermittent continuous measurement according to the set parameters and display the determination results (NH3-Nmg/L) on the screen of the instrument, and the monitoring accuracy can meet the requirement of the lowest standard of the current content of the ammoniacal nitrogen.
Description
Technical field:
The utility model belongs to a kind of monitor, in particular for the ammonia nitrogen online automatic monitor.
Technical background:
The monitoring of water quality pollutant is a process of measuring pollutant typical value in the water quality, mainly with temperature, turbidity, suspension, pH value, acid, alkali, salt, dissolved oxygen DO class inorganics; Various metal species materials; Oils; Chemical oxygen demand (COD), biochemical oxygen demand type organic are main.The water source of monitoring comprises natural water (rainwater, surface water and underground water), domestic water and river, river, lake, seawater etc.The method of measuring ammonia nitrogen in the water at present is mainly: the titrimetry after the separated, the nessler reagent photometry, salicylic acid hypochlorite photometry, ion electrode method and gas sensing electrode method, though the automonitor according to above-mentioned distinct methods development and Application respectively has its advantage, but the defective that exists some to be difficult to overcome respectively, as: the sensitivity of titration formula monitor is not good enough, the chemical reagent consumption of luminosity formula monitor is bigger than normal and unstable, ion electrode formula monitor is subject to the cationic interference of other single order, the air film of air-sensitive formula monitor is easily contaminated and lost efficacy, conversion spectrum formula monitor is made complicated because of it in addition, cost an arm and a leg, use and be difficult to popularize, and, the ammonia nitrogen minimum that above all kinds of monitors are measured is about 0.05mg/L, and the ammonia nitrogen minimum standard has reached 0.02mg/L in the water of implementing at present, so above all kinds of monitor all exists sensitivity not reach the problem of request for utilization.
Summary of the invention:
Provide a kind of ammonia nitrogen online automatic monitor, its monitoring accuracy can satisfy the requirement of existing ammonia-nitrogen content minimum standard order of the present utility model.
Be the ammonia nitrogen online automatic monitor of the present utility model that achieves the above object, comprise reactor, absorption cell, conductivity meter and electric apparatus control apparatus, key is the delivery pipe that is provided with a conveying ammonia nitrogen gas between reactor and the absorption cell, establishes the electrode of the mensuration electric conductivity value of a connection conductivity meter in the absorption cell.
The utility model adopts the stripping separate type to detect, can effectively prevent the interference of irrelevant composition to measuring in the sample, and lead direct mensuration and test fluid is carried out auto thermal compensation with electricity, examination criteria is 0.01mg/L, can satisfy the requirement of ammonia-nitrogen content (0.02mg/L) in the mensuration water fully.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment
Embodiment:
Scheme referring to Fig. 1 specific embodiment of the utility model is as follows:
Described ammonia nitrogen online automatic monitor comprises reactor, absorption cell, and conductivity meter and electric apparatus control apparatus, key is the delivery pipe 3 that is provided with a conveying ammonia nitrogen gas between reactor 1 and the absorption cell 2, establishes the electrode 4 of the mensuration electric conductivity value of a connection conductivity meter in the absorption cell.When injecting sample in the reactor, ammonia nitrogen gas is overflowed, enter in the absorption liquid in the absorption cell by snorkel 3, then cause the conductivity of absorption liquid to change, measure the conductivity value that ammonia nitrogen gas enters the absorption liquid front and back, can determine the ammonia nitrogen gas flow of effusion, and then measure the ammonia-nitrogen content in the sample.
Another snorkel 5 is provided with an air pump 6 between described reactor 1 and the absorption cell 2.One end of snorkel 5 is communicated with and is communicated with through the wall of air pump 6 with reactor 1 with top one wall of absorption cell 2, in order to the gas blowback in the absorption cell 2 to reactor 1, make the internal pressure of absorption cell 2 keep equilibrium state, and the formation closed loop is followed state, when the interior pressure of absorption cell did not reach authorised pressure, 6 direct test liquids in reactor 1 of air pump were blown into air, this liquid of vigorous agitation, ammonia in this liquid is overflowed, be blown into absorption cell 2 through snorkel 3 again.
Described delivery pipe 3 is provided with atmospheric valve 7; One end of delivery pipe 3 is connected with the top wall of reactor 1, the other end then is connected with bottom one wall of absorption cell 2, one atmospheric valve 7 is set, in order to gas flow and the concentration that regulation and control come autoreactor 1, the gas to be measured that input is produced through reactor 1 in absorption cell 2 on delivery pipe 3.
Described another snorkel 5 is provided with atmospheric valve 8; Atmospheric valve 8 is in order to the air pressure in the regulation and control absorption cell, and when air pressure was excessive, atmospheric valve 8 was opened, and the unnecessary gas in the absorption cell 2 is blown it to reactor 1 through snorkel 5 and by air pump 6.
Described reactor 1 is provided with heating arrangement; One heating arrangement (not shown) is set in the reactor 1, this heating arrangement makes the working temperature of test liquid be in steady state, ammonia in the test liquid is isolated as early as possible, can shorten the reaction time can avoid again reducing the sensitivity of mensuration because of the water evaporates loss makes the diluted absorption solution of absorption cell 2, this heating arrangement is an electric heater unit, and this series products is an existing products in markets.
The bottom of described reactor 1 and absorption cell 2 is provided with bleeder valve 9; Bleeder valve 9 installs respectively in the bottom of reactor 1 and absorption cell 2, after measuring end-of-job, opens bleeder valve 8, the liquid in reactor 1 and the absorption cell 2 is emitted, after the cleaning, in order to using next time again.
Be provided with an alkali lye bottle 10 and be communicated with through solenoid valve with reactor 1; Alkali lye bottle 10 is communicated with reactor 1 by the solenoid valve (not shown), when monitor is worked, solenoid valve is opened, in reactor 1, inject the alkaline solution that has configured, sample water reinjects in the reactor 1 then, form the alkaline mixed solution body, to treat the air that is blown into reactor 1 by air pump 6 ammonia in the mixed liquor is blown out, solenoid valve can inject alkali lye by the time automatically according to working condition.
Be provided with temperature element in the described absorption cell 2 and be connected with electric apparatus control apparatus; The electrode 4 of one mensuration electric conductivity value is set in the absorption cell 2, when ammonia that reactor 1 blows out in delivery pipe 3 is blown into absorption cell 2, ammonia in the air-flow is absorbed by liquid absorption, and the conductivity that causes absorption liquid changes, this conductivity variations value is that ammonia content in the sample is proportional with blowing out the ammonia amount, electrode 4 is directly measured concrete data, and the high sensitivity of tool, the conductivity variations value is transferred to conductivity meter, for making the temperature self-compensation (Temperature Influence is fairly obvious in conductance measurement) in conductance measurement, so a thermometric electrode is set in absorption cell, to measure the temperature of absorption liquid, the induction end of the electrode 4 of thermometric electrode and conductivity meter all places in the absorption cell 2, its output terminal is connected to conductivity meter and control device by the transmission line, and to calculating correction, to guarantee the degree of accuracy of measured value because of the conductivity variations of temperature variation generation.
Described have two or more reactors 1 to connect absorption cell 2 through delivery pipe 3; Reactor 1 can be provided with two or more, its separately the ammonia nitrogen letter shoot or connect with delivery pipe 3 or directly be communicated with absorption cell 2, ammonia in each reactor 1 mixed liquor all enters in the absorption cell 2, can make the ammonia of absorption cell 2 enrichments stripping from a plurality of reactor 1 samples, the concentration limit degree of accuracy is improved greatly, can reach below the 0.01mg/L.
The utility model is stripping-conductance type ammonia nitrogen online automatic monitor, circulation blow-removing, conductance measurement, enrichment measurement and temperature self-compensation method are closed in employing, can satisfy the requirement of measuring ammonia nitrogen in surface water, the underground water, during use, with the ammonia nitrogen standard solution with instrumental calibration good after, as long as connect detected water sample, instrument just can carry out step connection and measure automatically according to setup parameter, provides measurement result on screen, and store for printing, the quiescent interval is 30 minutes to 4 hours.
Claims (10)
1: a kind of ammonia nitrogen online automatic monitor, comprise reactor, absorption cell, conductivity meter and electric apparatus control apparatus, it is characterized in that being provided with between reactor (1) and the absorption cell (2) delivery pipe (3) of a conveying ammonia nitrogen gas, establish the electrode (4) of the mensuration electric conductivity value of a connection conductivity meter in the absorption cell (2).
2:, it is characterized in that another snorkel (5) is provided with an air pump (6) between reactor (1) and the absorption cell (2) by the described automonitor of claim 1.
3:, it is characterized in that described delivery pipe (3) is provided with atmospheric valve (7) by claim 1 or 2 described automonitors.
4:, it is characterized in that described another snorkel (5) is provided with atmospheric valve (8) by the described automonitor of claim 2.
5:, it is characterized in that described reactor (1) is provided with heating arrangement by claim 1 or 2 or 4 described automonitors.
6:, it is characterized in that the bottom of reactor (1) and absorption cell (2) is provided with bleeder valve (9) by claim 1 or 2 described automonitors
7: by claim 1 or 2 or 4 described automonitors, it is characterized in that being provided with an alkali lye bottle (10) and be communicated with through solenoid valve with reactor (1).
8: by the described automonitor of claim 3, it is characterized in that being provided with an alkali lye bottle (10) and be communicated with through solenoid valve with reactor (1).
9: by claim 1 or 2 or 4 or 8 described automonitors, it is characterized in that being provided with in the absorption cell (2) temperature element and be connected with electric apparatus control apparatus.
10: by claim 1 or 2 described automonitors, it is characterized in that to have two or more reactors (1), connect absorption cell (2) through delivery pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235018 CN2545608Y (en) | 2002-05-28 | 2002-05-28 | On-line automatic ammoniacal nitrogen monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235018 CN2545608Y (en) | 2002-05-28 | 2002-05-28 | On-line automatic ammoniacal nitrogen monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2545608Y true CN2545608Y (en) | 2003-04-16 |
Family
ID=33709652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02235018 Expired - Fee Related CN2545608Y (en) | 2002-05-28 | 2002-05-28 | On-line automatic ammoniacal nitrogen monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2545608Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101598719B (en) * | 2009-06-30 | 2013-10-02 | 烟台大学 | Waste flow quantity, ammonia nitrogen concentration and ammonia nitrogen total content water quality on-line combined tester |
-
2002
- 2002-05-28 CN CN 02235018 patent/CN2545608Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598719B (en) * | 2009-06-30 | 2013-10-02 | 烟台大学 | Waste flow quantity, ammonia nitrogen concentration and ammonia nitrogen total content water quality on-line combined tester |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |