CN211348200U - Water quality detection device - Google Patents
Water quality detection device Download PDFInfo
- Publication number
- CN211348200U CN211348200U CN201922354861.0U CN201922354861U CN211348200U CN 211348200 U CN211348200 U CN 211348200U CN 201922354861 U CN201922354861 U CN 201922354861U CN 211348200 U CN211348200 U CN 211348200U
- Authority
- CN
- China
- Prior art keywords
- ammonia nitrogen
- pipeline
- water
- water quality
- way valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a water quality testing device, including the sedimentation tank, five parameter sensor, ammonia nitrogen circulation pond and ammonia nitrogen sensor, the sedimentation tank is used for bearing and waits to detect liquid, five parameter sensor probes are located in the sedimentation tank, the bottom of ammonia nitrogen circulation pond and the bottom of sedimentation tank are through first pipeline intercommunication, first pipeline is equipped with first valve, ammonia nitrogen sensor's probe is located in the ammonia nitrogen circulation pond, wherein, ammonia nitrogen circulation pond is equipped with the second pipeline, the water inlet of second pipeline is used for inputing TISAB solution, the delivery port intercommunication ammonia nitrogen circulation pond of second pipeline. The utility model provides a water quality testing device through the first pipeline of first valve control for the probe of ammonia nitrogen sensor sets up in the ammonia nitrogen flow cell alone, pours into quantitative TISAB solution into to the ammonia nitrogen flow cell through the second pipeline during measurement ammonia nitrogen content, in order to ensure ammonia nitrogen content detection precision.
Description
Technical Field
The utility model relates to a water quality monitoring field, in particular to water quality testing device.
Background
The modern society has higher and higher requirements on environmental protection, and in order to promote water quality, the water quality monitoring needs to be carried out to natural water, surface water, industrial drainage etc. specifically, need detect the content of various parameters and specific composition of water through water quality testing device. The indexes for evaluating the water quality generally comprise the content of ammonia nitrogen (NH4+ -N) in the water body, five parameters (namely, temperature, pH, dissolved oxygen, conductivity and turbidity) of the conventional water quality and the like.
However, the existing water quality detection device does not limit the installation environment and the use condition of the ammonia nitrogen sensor, so that in a system for measuring multiple parameters of water quality, the ammonia nitrogen sensor and the conventional five-parameter sensor are often installed in a sedimentation tank for measurement, the ion activity in the liquid to be detected cannot be accurately controlled, the measured value of the ammonia nitrogen sensor is inaccurate after a long time, and the error is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water quality testing device aims at providing one kind and improves the detection accuracy of ammonia nitrogen content, and avoids the water quality testing device of frequent calibration.
In order to achieve the above object, the utility model provides a water quality testing device, include:
the sedimentation tank is used for bearing the liquid to be detected;
the five-parameter sensor probe is arranged in the sedimentation tank;
the bottom of the ammonia nitrogen flow tank is communicated with the bottom of the sedimentation tank through a first pipeline, and the first pipeline is provided with a first valve; and the number of the first and second groups,
the probe of the ammonia nitrogen sensor is arranged in the ammonia nitrogen flow cell;
the ammonia nitrogen flow-through tank is provided with a second pipeline, a water inlet of the second pipeline is used for inputting a TISAB solution, and a water outlet of the second pipeline is communicated with the ammonia nitrogen flow-through tank.
In an embodiment, the water quality detection device further comprises a water delivery pump, an input end of the water delivery pump is used for inputting the TISAB solution, and an output end of the water delivery pump is communicated with a water inlet of the second pipeline.
In one embodiment, the water delivery pump is a peristaltic pump.
In an embodiment, the water quality detection device further includes a first three-way valve, an output end of the first three-way valve is communicated with an input end of the water delivery pump, a first water inlet end of the first three-way valve is used for inputting TISAB solution, and a second water inlet end of the first three-way valve is used for inputting air.
In an embodiment, the water quality detection device further includes a second three-way valve, an output end of the second three-way valve is communicated with a first water inlet end of the first three-way valve, the first water inlet end of the second three-way valve is used for inputting TISAB solution, and a second water inlet end of the second three-way valve is used for inputting potassium chloride solution.
In one embodiment, the second pipeline comprises two water inlets, the first water inlet is used for inputting the TISAB solution, and the second water inlet is used for inputting the potassium chloride solution.
In one embodiment, a stirring component is arranged in the ammonia nitrogen flow cell.
In one embodiment, the bottom of the sedimentation tank is provided with a first drainage outlet
In one embodiment, the bottom of the ammonia nitrogen flow-through tank is provided with a second water outlet.
In one embodiment, the first valve is a solenoid valve.
The utility model provides a water quality testing device, including the sedimentation tank, five parameter sensor, ammonia nitrogen circulation pond and ammonia nitrogen sensor, the sedimentation tank is used for bearing and waits to detect liquid, five parameter sensor probes are located in the sedimentation tank, the bottom of ammonia nitrogen circulation pond and the bottom of sedimentation tank are through first pipeline intercommunication, first pipeline is equipped with first valve, ammonia nitrogen sensor's probe is located in the ammonia nitrogen circulation pond, wherein, ammonia nitrogen circulation pond is equipped with the second pipeline, the water inlet of second pipeline is used for inputing quantitative TISAB solution, the delivery port intercommunication ammonia nitrogen circulation pond of second pipeline. The utility model provides a water quality testing device through the first pipeline of first valve control for the probe of ammonia nitrogen sensor sets up in the ammonia nitrogen flow cell alone, pours into quantitative TISAB solution into to the ammonia nitrogen flow cell through the second pipeline during measurement ammonia nitrogen content, with the addition of controlling TISAB solution better, improves ammonia nitrogen content's detection precision.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of a three-dimensional structure of a water quality detecting device provided by the utility model.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
6 | Second pipeline |
| 2 | Ammonia |
7 | |
| 3 | Ammonia nitrogen sensor | 8 | First three-way valve |
| 4 | First pipeline | 9 | Second three- |
| 5 | |
10 | Water quality detection device |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a water quality testing device 10, please refer to fig. 1, water quality testing device 10 includes sedimentation tank 1, five parameter sensor, ammonia nitrogen circulation pond 2 and ammonia nitrogen sensor 3, sedimentation tank 1 is used for bearing and waits to detect liquid, five parameter sensor probes are located in sedimentation tank 1, ammonia nitrogen circulation pond 2's bottom and sedimentation tank 1's bottom are through first pipeline 4 intercommunication, first pipeline 4 is equipped with first valve 5, ammonia nitrogen sensor 3's probe is located in ammonia nitrogen circulation pond 2, wherein, ammonia nitrogen circulation pond 2 is equipped with second pipeline 6, the water inlet of second pipeline 6 is used for inputing TISAB solution, the delivery port intercommunication ammonia nitrogen circulation pond 2 of second pipeline 6.
The detection of the ammonia nitrogen sensor 3 is based on an ion selective electrode method, specifically, the ammonia nitrogen sensor 3 measures the potential difference between a working electrode and a reference electrode and converts the potential difference into the ammonia nitrogen concentration based on the Nernst equation. Nernst equation:
E＝E0+[(ln10)RT/nF]*lg a
e: potential of working electrode
E0: potential of reference electrode
R: gas constant 8.314J/K.mol
T: absolute temperature (273+ T deg.C) (where T is ambient temperature)
n: number of charges on ion
F: faraday constant 96487C/mol
a: activity of ion
Wherein a ═ γ · c
γ: activity coefficient c: ion concentration
The activity coefficient γ is determined by the total ion intensity μ, that is, if μ is determined, γ can be determined, and c (ion concentration) can be relatively measured when a (ion activity) is determined. In the actual measurement, a certain amount of Total Ionic Strength adjusting Buffer TISAB (TISAB, Total Ionic Strength Adjustment Buffer) needs to be added to the solution to be detected and the standard solution for making the calibration curve, so as to ensure that the Total Ionic strengths μ in the sample solution to be detected and the standard solution are consistent.
At a certain temperature, the following equation holds for total ion intensity:
E＝E0+K*lgγc
where K is the slope c: ion concentration mg/L γ: activity coefficient ≈ 1
And (3) obtaining a functional relation (calibration curve) of the ion concentration (c) and the potential (E) for several times by using standard solutions with different concentrations, and quantifying the ion concentration according to the potential (E) of the sample solution to be detected.
In this embodiment, when the water quality detection device 10 performs water quality detection, firstly, a liquid to be detected is injected into the sedimentation tank 1, and the probe of the five-parameter sensor is arranged in the sedimentation tank 1, so that five parameters of temperature, pH, dissolved oxygen, conductivity and turbidity of the liquid to be detected can be obtained. The first valve 5 is controlled to be opened, so that liquid in the sedimentation tank 1 flows into the ammonia nitrogen flow tank 2 through the first pipeline 4, the communicating vessel is far away, after a period of time, the liquid level in the ammonia nitrogen flow tank 2 is consistent with that in the sedimentation tank 1, and then the first valve 5 is closed. Preferably, the first valve 5 is a solenoid valve, so that the first valve 5 is automatically controlled to be opened or closed. And adding a certain amount of TISAB solution into the ammonia nitrogen flow cell 2 through a second pipeline 6. Specifically, the addition amount of the TISAB solution is approximately 1/10 of the solution to be detected, and the added TISAB solution can keep the liquid to be detected to have higher ionic strength, so that the total ionic strength mu of the liquid to be detected in the ammonia nitrogen flow cell 2 is consistent with that of the standard liquid, and the accurate detection precision of the ammonia nitrogen content is ensured.
The method for adding the TISAB solution into the ammonia nitrogen flow cell 2 can be various, such as manual addition or automatic addition. In this embodiment, the water quality detecting device 10 further includes a water delivery pump, an input end of the water delivery pump is used for inputting the TISAB solution, and an output end of the water delivery pump is communicated with a water inlet of the second pipeline 6. The TISAB solution is added into the ammonia nitrogen flow cell 2 through the water delivery pump, and can be automatically and quantitatively added, so that the adding accuracy of the TISAB solution is guaranteed, and the detection precision of the ammonia nitrogen content is improved.
On the basis of the above embodiment, the water delivery pump is preferably a peristaltic pump 7. The peristaltic pump 7 pumps fluid by alternately squeezing and releasing the elastic conveying hose, and has high stability and good precision. In the process of adding the TISAB solution, the addition amount can be better controlled, so that the detection precision of the ammonia nitrogen content is improved.
Further, the water quality detection device 10 further comprises a first three-way valve 8, an output end of the first three-way valve 8 is communicated with an input end of the water delivery pump, a first water inlet end of the first three-way valve 8 is used for inputting a TISAB solution, and a second water inlet end of the first three-way valve 8 is used for inputting air. In this implementation, when adding the TISAB solution, the first end of intaking of control first three-way valve 8 is opened, utilize peristaltic pump 7 to add the TISAB solution in ammonia nitrogen flow-through tank 2, later switch over first three-way valve 8, close the first end of intaking of first three-way valve 8, open the second end of intaking, start peristaltic pump 7 and inject the air into ammonia nitrogen flow-through tank 2, close peristaltic pump 7 after TISAB solution and the liquid intensive mixing certain time that awaits measuring, utilize ammonia nitrogen sensor 3 to measure the ammonia nitrogen content in the liquid. Therefore, the method is beneficial to uniformly mixing the solution to be detected and the TISAB solution, so that the ionic strength of the solution to be detected is uniform, and the detection precision of the ammonia nitrogen content is improved.
On the basis of the first embodiment, the water quality detection device 10 further comprises a second three-way valve 9, an output end of the second three-way valve 9 is communicated with a first water inlet end of the first three-way valve 8, the first water inlet end of the second three-way valve 9 is used for inputting TISAB solution, and a second water inlet end of the second three-way valve 9 is used for inputting potassium chloride solution.
In this embodiment, before ammonia nitrogen sensor 3 works, the first end of intaking of second three-way valve 9 is controlled and is opened, inputs TISAB solution to after adding, control first three-way valve 8 and switch into the end of intaking, start peristaltic pump 7 and inject the air into ammonia nitrogen flow cell 2 and stir, later detect the ammonia nitrogen content in waiting to detect the liquid through ammonia nitrogen sensor 3 again. After the detection is finished, discharging the sample liquid in the ammonia nitrogen flow cell 2, switching the second three-way valve 9, opening the second water inlet end of the second three-way valve 9, closing the first water inlet end, injecting a potassium chloride solution into the ammonia nitrogen flow cell 2, soaking the electrode of the ammonia nitrogen sensor 3 by the potassium chloride solution, maintaining the electrode, storing the electrode, and ensuring the subsequent detection precision.
In an embodiment, the liquid in the ammonia nitrogen flow-through tank 2 can also be stirred without inputting air through the peristaltic pump 7. The second pipeline 6 comprises two water inlets, the first water inlet is used for inputting a TISAB solution, and the second water inlet is used for inputting a potassium chloride solution. So, before ammonia nitrogen sensor 3 works, add into TISAB solution through first water inlet to ammonia nitrogen flow cell 2, and after the detection finishes, the sample liquid in discharge ammonia nitrogen flow cell 2, inject potassium chloride solution into ammonia nitrogen flow cell 2 through the second water inlet, be that potassium chloride solution soaks ammonia nitrogen sensor 3's electrode to the maintenance electrode, thereby preserve the electrode, guarantee follow-up detection precision.
On the basis of the previous embodiment, a stirring part is arranged in the ammonia nitrogen flow cell 2. Specifically, the stirring blade or the stirring rod can be used for fully stirring the liquid to be detected in the ammonia nitrogen flow cell 2 by using the stirring component after the TISAB solution is added, so that the solution to be detected and the TISAB solution are uniformly mixed, the ionic strength of the solution to be detected is uniform, and the detection precision of the ammonia nitrogen content is improved.
After the detection finishes, need discharge the liquid in ammonia nitrogen flow-through cell 2 and the sedimentation tank 1, in an embodiment, 1 bottom of sedimentation tank is equipped with first drainage port, and after the detection finishes, open first valve 5, the liquid in the ammonia nitrogen flow-through cell 2 is because the linker principle flows in behind the sedimentation tank 1 through first pipeline 4, discharges from first drainage port again.
On the basis of the above embodiment, the bottom of the ammonia nitrogen flow cell 2 is provided with a second water outlet. So, after the detection finishes, can directly open the second valve, discharge the liquid in the ammonia nitrogen flow-through cell 2, avoid remaining. To ensure the accuracy of subsequent detection.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. A water quality detecting apparatus includes:
the sedimentation tank is used for bearing the liquid to be detected;
the five-parameter sensor probe is arranged in the sedimentation tank;
the bottom of the ammonia nitrogen flow tank is communicated with the bottom of the sedimentation tank through a first pipeline, and the first pipeline is provided with a first valve; and the number of the first and second groups,
the probe of the ammonia nitrogen sensor is arranged in the ammonia nitrogen flow cell;
the ammonia nitrogen flow-through tank is provided with a second pipeline, a water inlet of the second pipeline is used for inputting a TISAB solution, and a water outlet of the second pipeline is communicated with the ammonia nitrogen flow-through tank.
2. The water quality detection device of claim 1, further comprising a water delivery pump, wherein an input end of the water delivery pump is used for inputting the TISAB solution, and an output end of the water delivery pump is communicated with a water inlet of the second pipeline.
3. The water quality detecting device according to claim 2, wherein the water delivery pump is a peristaltic pump.
4. The water quality detecting device according to claim 2, further comprising a first three-way valve, wherein an output end of the first three-way valve is communicated with an input end of the water delivery pump, a first water inlet end of the first three-way valve is used for inputting the TISAB solution, and a second water inlet end of the first three-way valve is used for inputting air.
5. The water quality detecting device according to claim 4, wherein the water quality detecting device further comprises a second three-way valve, an output end of the second three-way valve is communicated with a first water inlet end of the first three-way valve, the first water inlet end of the second three-way valve is used for inputting the TISAB solution, and a second water inlet end of the second three-way valve is used for inputting the potassium chloride solution.
6. The water quality detecting device of claim 1, wherein the second pipeline comprises two water inlets, the first water inlet is used for inputting a TISAB solution, and the second water inlet is used for inputting a potassium chloride solution.
7. The water quality detection device according to claim 6, wherein a stirring member is provided in the ammonia nitrogen flow cell.
8. The water quality detecting device according to claim 1, wherein a first drain port is provided at the bottom of the sedimentation tank.
9. The water quality detection device according to any one of claims 1 to 8, wherein a second water outlet is arranged at the bottom of the ammonia nitrogen flow cell.
10. The water quality detecting apparatus according to claim 1, wherein the first valve is a solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922354861.0U CN211348200U (en) | 2019-12-23 | 2019-12-23 | Water quality detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922354861.0U CN211348200U (en) | 2019-12-23 | 2019-12-23 | Water quality detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211348200U true CN211348200U (en) | 2020-08-25 |
Family
ID=72133540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922354861.0U Active CN211348200U (en) | 2019-12-23 | 2019-12-23 | Water quality detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211348200U (en) |
-
2019
- 2019-12-23 CN CN201922354861.0U patent/CN211348200U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206223771U (en) | A kind of seawater total alkalinity on-line monitoring system | |
| CN103983753B (en) | Can self-inspection correct active sludge aerobic respiration measurement device and using method | |
| CN108896629B (en) | Three-point flow type calibration device and method for sodium ion concentration meter | |
| CN106645614A (en) | A seawater total alkalinity on-line monitoring system | |
| CN203275349U (en) | Ammonia nitrogen concentration water quality analyzer | |
| CN211348200U (en) | Water quality detection device | |
| CN208313682U (en) | A kind of volume fixing device for automatic dilution | |
| CN206618713U (en) | A kind of Water quality ammonia nitrogen on-Line Monitor Device | |
| CN211424010U (en) | Multi-range water quality analyzer flow path system | |
| CN102375073A (en) | Fully automatic fluorine analyzer and analytical method thereof | |
| CN110632267A (en) | System and method for continuously measuring high-concentration sewage exceeding application range of online instrument | |
| CN102539505A (en) | Online electrochemical measuring device | |
| CN112986485B (en) | Titration apparatus and titration method | |
| KR100798053B1 (en) | Cod analyzer | |
| CN211741283U (en) | Blood cell analyzer and mixing pool thereof | |
| CN211718259U (en) | Water quality analyzer | |
| US6905872B1 (en) | On-line respirometer and method of using the same | |
| CN109709261B (en) | Method and instrument for measuring degree of hydrolysis of sulfonate-containing polyacrylamide polymer | |
| CN103278495B (en) | Active sludge specific oxygen utilization rate on-line determination device and method in sewage disposal system | |
| CN205067357U (en) | Mobile detection device of online intermittent type of quality of water | |
| CN209606194U (en) | A kind of device being used for diluent liquid in liquid detecting | |
| CN219016174U (en) | Device for detecting chloride ions in water sample | |
| CN219737288U (en) | Metering device, water sample diluting device and ammonia nitrogen on-line analyzer | |
| CN104764694A (en) | Variable-optical-path metal constant-temperature measuring chamber of ammonia-nitrogen online monitoring instrument | |
| CN205581070U (en) | Sodium chloride content spot test device among cellulose ether |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |