CN106644973B - Global function water quality on-line monitoring instrument - Google Patents
Global function water quality on-line monitoring instrument Download PDFInfo
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- CN106644973B CN106644973B CN201610884805.6A CN201610884805A CN106644973B CN 106644973 B CN106644973 B CN 106644973B CN 201610884805 A CN201610884805 A CN 201610884805A CN 106644973 B CN106644973 B CN 106644973B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 175
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- 230000005684 electric field Effects 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 22
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- 230000005611 electricity Effects 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 8
- 231100000719 pollutant Toxicity 0.000 abstract description 8
- 239000003403 water pollutant Substances 0.000 abstract description 5
- 238000002835 absorbance Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 13
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- 238000010586 diagram Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000008400 supply water Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
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- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
- G01N2021/3155—Measuring in two spectral ranges, e.g. UV and visible
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A kind of global function water quality on-line monitoring instrument, including pipeline, the water inlet end of the pipeline is connected to external water pipe, the pipeline is successively arranged electric field induction area and ultraviolet-visible sensing unit along the flow direction of water flow, electric field induction area includes extending positive plate and negative plate relatively disposed in parallel along water (flow) direction in pipeline, and the ultraviolet-visible sensing unit includes the UV, visible light optical sensor being oppositely arranged and UV, visible light radiant on the outside of pipeline.The global function water quality on-line monitoring instrument, can rapidly, it is so accurate that measure the variation of multiple pollutant in water and carry out Realtime Alerts, not only structure is simple, implement to be easy, it is at low cost, and also it is accurate to measure alarm, a variety of water pollutants can be measured simultaneously, realize the fast slowdown monitoring of global function.
Description
Technical field
The present invention relates to a kind of water quality monitoring instruments.
Background technique
The quality, particularly tap water of water and the quality of pure water prepared by various equipment and the daily life of the mankind
Living and health is closely related.Due to various originals such as industrial pollution, agricultural pollution, natural calamity, pipeline aging, artificial carelessness
Cause can all introduce pollutant into tap water.Pure water, either using filtration method, electric dialyzator method, ion-exchanger method,
Hyperfiltration, the way of distillation or other processing method preparations appropriate, can all pollute because of filtering material, have a power failure, amberlite
Rouge saturation or aging, film aging or deformation, the pollution of distilling path, artificial carelessness, etc. a variety of causes, lead to the impure of pure water
Only.Therefore, while constantly improve tap water and pure water treatment technology and strengthening management, it is necessary to configure suitable method prison
The water quality of these water is surveyed, safeguards human health.
Although having succeeded in developing there are many detection method and equipment of the quality for monitoring water, due in water
Pollutant kind it is too many, such as various microorganisms, virus, bacterium, fungi, protozoan, algae, each heavy metal species water soluble salt,
Other water soluble salts, various water soluble organic substances and volatile organic matter, various suspended particulates, nitrogen substance, P elements object
Matter, radioactive substance etc. will be completed after much testing, could judge the quality of water, speed is slow, and at high cost.
Tap water and the pure water prepared using various equipment, generally require the water quality for quickly understanding them, to ensure people
Class can use at any time, especially portable complete therefore, it is necessary to invent single, quickly detection water quality on-line computing model
Function water quality on-line monitoring instrument.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of rapid survey and measure accurate water quality monitor
Device.
The technical scheme of the invention to solve the technical problem is: a kind of global function water quality on-line monitoring instrument, packet
Pipeline is included, the water inlet end of the pipeline is connected to external water pipe, and the pipeline is successively arranged electric field along the flow direction of water flow and lures
Area and ultraviolet-visible sensing unit are led, electric field induction area includes setting in parallel relatively in pipeline along water (flow) direction extension
The positive plate and negative plate set, the ultraviolet-visible sensing unit include the ultraviolet-visible being oppositely arranged on the outside of pipeline
Sensor and UV, visible light radiant.
Influence of the electric field to water-soluble colorless salt in water in order to prevent is failed, and the ultraviolet-visible sensing unit is lured with electric field
The spacing led between area is less than 3cm.
Preferably, the area of electric field induction area, positive plate and negative plate is 3mm2-8cm2, positive plate and negative plate it
Between distance be 2mm-5cm, being applied to voltage on positive-negative electrode plate is 2v-30v.
Further include comparing pond for the ease of measurement, compares and be placed with qualified water in pond as reference, the comparison pond is located at
The adjacent position of the pipeline of the ultraviolet-visible sensing unit, and it is similarly positioned in UV, visible light optical sensor and ultraviolet-visible
Between light source.
Preferably, the wavelength of the UV, visible light radiant is in 270nm~400nm.
In order to keep the result of measurement more stable, the internal diameter of the water outlet of the pipeline is less than the internal diameter of water inlet.
Preferably, the internal diameter of the water outlet of the pipeline is within the 50% of water inlet internal diameter.
Compared with the prior art, the advantages of the present invention are as follows the global function water quality on-line monitoring instrument, can rapidly, it is accurate
It measures the variation of multiple pollutant in water and carries out Realtime Alerts, not only structure is simple, implements to be easy, and it is at low cost, and survey
Amount alarm is accurate, can measure a variety of water pollutants simultaneously, realizes the fast slowdown monitoring of global function.
Detailed description of the invention
Fig. 1 is the schematic diagram of the global function water quality on-line monitoring instrument of the embodiment of the present invention.
Fig. 2 is the schematic diagram in the direction A in Fig. 1.
Fig. 3 is the schematic diagram of another embodiment of the global function water quality on-line monitoring instrument of the embodiment of the present invention.
Relationship in the water that Fig. 4 measures for the on-line computing model of second embodiment of the invention between total plate count and absorbance
Schematic diagram.
Relationship in the water that Fig. 5 measures for the on-line computing model of second embodiment of the invention between na concn and absorbance is shown
It is intended to.
Specific embodiment
Invention is described in further detail below in conjunction with figure embodiment.
The global function water quality on-line monitoring instrument of the embodiment of the present invention, including pipeline 1, water in pipeline 1 is from arrival end to going out
Mouth end one-way flow, the arrival end of pipeline 1 are connected to extraneous water channel for accessing the water for needing to measure.
As shown in Figure 1, 2, electric field induction area 3 and UV, visible light are disposed with according to the flow direction of water flow in pipeline 1
Light sensing area 2.The ultraviolet-visible sensing unit 2 includes the UV, visible light optical sensor 21 set on the outside of pipeline 1, and pipeline
1 other side relative to UV, visible light optical sensor 21 is externally provided with UV, visible light radiant 22.Electric field induction area 3 includes setting
Extend pole plate relatively disposed in parallel, respectively positive plate 31 and negative plate 32, anode along water (flow) direction in two pieces in pipeline 1
Plate and negative plate are respectively connected to the positive and negative anodes of extraneous power supply, which is preferably alternating current.The electric field induces area 3 can be with
Using point type electric field, for example, by using contact conductance electrode.Since extra electric field is induction of the ion of water-soluble colorless salt in water
Orderly quickly movement in water, the quick movement of ion change the material state of water, make absorption of the water to UV, visible light photon
Enhancing, causes absorbance to increase, and the concentration of the colourless salt of solubility in the increase and water of the absorbance is proportional.
And the electric field induces the distance between area 3 and ultraviolet-visible sensing unit 2, the i.e. positive and negative pole plate and purple of electric field
Spacing between outer visible light sensor 21 is less than 3cm.The mobile absorption generated to ultraviolet-visible of ion caused by electric field,
If electric field distance UV, visible light optical sensor is too far, after ion is detached from electric field, restore to move freely state quickly, not to purple
Outer visible light interferes, and can not just be detected by UV, visible light optical sensor, will cause the survey to the colourless salt dissolved in water
Determine Lower result.The presence in namely electric field induction area 3 enables the water-soluble colorless salt in water to be detected.
The size of the electric field in electric field induction area 3 is determined that the i.e. area s of electrode plate is 3mm by three composition parameters2-
8cm2, the distance between two electrode plates d is 2mm-5cm, and the voltage V applied on the electrode is 2v-30v.In the range, water
It can be located within the scope of linearity curve between the concentration of the colourless salt of dissolubility and the absorbance measured.
UV, visible light optical sensor 21 is the detector that UV, visible light optical signal is converted to electric signal using light-sensitive element,
It is suitable for both of which, photovoltaic mode or guided optical mode, the UV, visible light optical sensor 21 of two class operating modes
The present invention.Although photovoltaic mode does not need series-connected cell, there is electric current in series resistance, and sensor is equivalent to a baby battery,
Output voltage, but comparison is difficult, cost is relatively high, so not preferably.Battery and although guided optical mode needs to connect
Work, sensor are equivalent to a resistance, and resistance value changes with the Strength Changes of light, and this to be easy to make, cost is relatively low, excellent
Choosing.The UV, visible light radiant of whole wave bands is suitable for heretofore described UV, visible light optical sensor, it is contemplated that Qiang Guang
Son causes the aging speed of glass vision panel and sensor element very fast, preferably the UV, visible light radiant of 270nm~400nm wave band
With corresponding UV, visible light optical sensor.
Also, the internal diameter of the water outlet of the pipeline 1 needs to be less than the internal diameter of water inlet, usually the 90% of water inlet with
It is interior, it is preferable that within water inlet 50%.
The measuring method of the global function water quality on-line monitoring instrument, can there are two types of, one of them is demarcated using qualified water
Method, that is, will first meet the water quality on-line monitoring instrument of the water of water standard through the invention, record corresponding ultraviolet-visible and pass
The reading of sensor is read with this as radix M, is set water quality normal data as N, is judged as water quality exception more than data N, into
Row alarm.Wherein, the relationship between water quality normal data and radix M, can be according to the quality need in different supply water places and water supply
It asks and is adjusted, to reduce unnecessary alarm.
Q=(N-M)/M；
N and M in formula can be the obtained electric signal of measurement, and Q can be set between 1%-10% or other needs
Specific data, for example, the Q of water for pharmaceutical purposes can be smaller, i.e., to the more demanding of water quality；Economic backward area Q can be bigger by one
A bit, i.e., lower to the requirement of water quality.N and M in formula is either the electric signal that measurement obtains, is also possible to common extinction
Degree.If the absorbance for meeting the water of water standard can be set to zero, the extinction degree of the sample water measured using absorbance
According to being Q, the sensitivity of the i.e. controllable alarm of magnitude range of Q is set.
Another measuring principle be using qualified water comparison method, using double optical channels and at the same time reading method,
As shown in Fig. 3, i.e., it is equipped in tester and compares pond.When monitoring water quality on-line, compares and be placed with qualified water in pond as ginseng
According to the reading in two channels is compared.The water quality reading for the sample water that UV, visible light optical sensor measures is N, comparison
Qualified water water quality readings are M, and N is more than that data M can be judged as water quality exception, are alarmed.In practical application, than
To qualified water water quality reading M and sample measured value N between relationship, can according to it is different supply water place and supply water quality
Demand is adjusted, to reduce unnecessary alarm.
Q=(N-M)/M；
Q can be set between 1-10% or the specific data of other needs.
Likewise, the N and M in formula are either the electric signal that measurement obtains, is also possible to common absorbance.If
Using absorbance, the absorbance for meeting the water of water standard can be set to zero, the absorbance data of the sample water measured is Q.
In this kind of method, which, which can be equipped with, compares pond 4, which is set to the adjacent position of pipeline 1, and ultraviolet
Visible light sensor 2 is disposed adjacent, and at the same time between UV, visible light radiant 22 and UV, visible light optical sensor 21, such as
Shown in Fig. 3.
Embodiment one:
The embodiment is using qualified water scaling method, as shown in Figure 1, to be stored with resistivity as 18M Ω * cm (25
DEG C) the water tank 51 of pure water be used as water source and qualified water, be to verify prison for regulating water quality in another sample water tank 52
The water sample of instrument is surveyed, corresponding pollutant is added in the pure water of 18M Ω * cm and prepares, two kinds of water can pass through a threeway 5, use
Peristaltic pump conveys pure water and sample water by water quality on-line monitoring instrument to another storage tank, i.e., the two of threeway 5 port is distinguished
Pure water storage tank 51 and sample water tank 52 are connected, another port connects water quality on-line monitoring instrument.Water quality on-line monitoring instrument calibration
When, only pure water transports in pipeline 1, and electric field induces area 3 to use contact conductance electrode, connects for example, by using Oakton CON6+
Touch conductance electrode, the dry cell of 4 3A excite water soluble salt, ultraviolet-visible sensing unit 2 is selected as power drives
The absorbance measured is saved as memory by the UV, visible light optical wavelength of 280nm, that is, is used as zero.When normal detection, pure water and sample
Water is mixed with 1:1 and is carried out.The third end of threeway connects portable all-purpose water quality on-line monitoring instrument of the invention, varies product every time
When water, the pipeline of water is at least 18M Ω * cm pure water isolated operation 15 minutes with resistivity, it is ensured that tests do not interfere with each other twice.
It pollutant load in the number and water of the sample water verified to the on-line computing model and corresponding opposite inhales
Luminosity measured value is respectively as shown in table 1 below.
Table 1:
All these pollutant concentrations increase, i.e. exception occurs in water quality, all can be by portable all-purpose water quality of the invention
On-line computing model, detecting immediately, the results show that the global function water quality on-line monitoring instrument reaches expected subject invention.Such as
The standard value of the pure water of fruit portable all-purpose water quality on-line monitoring instrument is determined as zero, and the sensitivity of this instrument can generally reach
To: total plate count (CFU/mL) is begun to ramp up from 6；The concentration of lead (mg/L) is begun to ramp up from 0.001；Nitrate (in terms of N, mg/
L concentration) is begun to ramp up from 10；Coloration (platinum cobalt chromaticity unit) is begun to ramp up from 2；Turbidity (NTU- nephelometric turbidity unit) from
0.1 begins to ramp up；The concentration of iron (mg/L) is begun to ramp up from 0.05；The concentration of sulfate (mg/L) is begun to ramp up from 20；Total α is put
Penetrating property (Bq/L) is begun to ramp up from 0.2；The concentration of ozone (O3, mg/L) is begun to ramp up from 0.01；Or the concentration of sodium (mg/L) from
50 begin to ramp up.
Embodiment two:
The embodiment is mainly used for verifying water pollutant concentration and detects the linear relationship of obtained data, and method is adopted
It is used with the selection for the parameter and sample being the same as example 1, as shown in figure 4, being the total plate count and survey in water in the figure
The relationship between absorbance obtained, as shown in figure 5, the relationship in the figure between the concentration and absorbance of the sodium in water.It can be with
Find out, it is all in a linear relationship between the water pollutant concentration and absorbance in two figures, so that the water quality on-line monitoring instrument
Water quality can faster and better be monitored.
Embodiment three:
The embodiment is monitored using qualified water Comparison Method.It is in the pure water storage tank of 18M Ω * cm (25 DEG C) with resistivity
Pure water of the water as washing test pipeline, the water sample in sample water tank is to be added in pure water that resistivity is 18M Ω * cm pair
The pollutant answered is prepared, and is transferred to water tank with peristaltic pump.Sample water tank and pure water storage tank equally pass through threeway and are connected to
Line monitor.The global function water quality on-line monitoring instrument of the embodiment, which is equipped with, compares pond 4, compares pond 4 and is set to UV, visible light light sensing
Area 2 is similarly positioned between UV, visible light radiant 22 and UV, visible light optical sensor 21.When changing sample water every time, in pipeline 1 extremely
It uses 18M Ω * cm pure water isolated operation 15 minutes less, it is ensured that test do not interfere with each other twice.It selects pure water to be used as when test to contrast
Product.Electric field induces area 3 to use contact conductance electrode, and the dry cell of Oakton CON6+ contact conductance electrode, 4 3A drives
It is dynamic, water soluble salt is excited, the UV, visible light optical wavelength of 280nm is selected in ultraviolet-visible sensing unit 2.Tester is verified
Pollutant load and corresponding Relative Absorbance measured value difference in the number and water of sample water is as shown in table 2:
Table 2:
The results show that either can accurately measure the exception of water quality using qualified water reference entry or comparison method.
The portable all-purpose water quality on-line monitoring instrument that the present invention discloses, can be measured with UV, visible light optical sensor
All water quality in water are abnormal, including various microorganisms, virus, bacterium, fungi, protozoan, bath, etc. unexpected increase cause
Water quality it is abnormal, water quality caused by emergent radioactive substance is abnormal, various water soluble organic substances and volatile organic matter
Unexpected raising caused by water quality it is abnormal, water quality caused by unexpected increased various suspended particulates is abnormal, nitrogenous and phosphorus nonionic
Water quality caused by the increase of substance is abnormal, and water quality caused by the unexpected increase of various ions is abnormal, including Nitrogen element ion
Water quality caused by increasing is abnormal, and water quality caused by the increase of phosphorus element-containing ion is abnormal, each heavy metal species water soluble salt concentration liter
Water quality exception caused by the unexpected raising of the abnormal and other water soluble salt concentration of water quality caused by height etc..Because can be simultaneously
The exceeded caused water quality of all contaminants measured in water is abnormal, and water quality on-line detector of the invention can quick and Times
Accuse the exception of water quality.
Claims (6)
1. the water inlet end of a kind of global function water quality on-line monitoring instrument, including pipeline (1), the pipeline (1) is connected to external water pipe,
The pipeline (1) is successively arranged electric field induction area (3) and ultraviolet-visible sensing unit (2), the electricity along the flow direction of water flow
Field induction area (3) includes extending positive plate (31) relatively disposed in parallel and negative plate along water (flow) direction in pipeline (1)
(32), the ultraviolet-visible sensing unit (2) includes the UV, visible light optical sensor being oppositely arranged on the outside of pipeline (1)
(21) and UV, visible light radiant (22), it is characterised in that: the ultraviolet-visible sensing unit (2) and electric field induction area (3) it
Between spacing be less than 3cm.
2. global function water quality on-line monitoring instrument as described in claim 1, it is characterised in that: the electric field induces area (3), anode
The area of plate and negative plate is 3mm2-8cm2, the distance between positive plate and negative plate are 2mm-5cm, are applied to positive-negative electrode plate
On voltage be 2v-30v.
3. global function water quality on-line monitoring instrument as described in claim 1, it is characterised in that: further include comparing pond (4), compare pond
(4) qualified water is placed in as reference, comparison pond (4) is located at the pipeline (1) of the ultraviolet-visible sensing unit (2)
Adjacent position, and be similarly positioned between UV, visible light optical sensor (21) and UV, visible light radiant (22).
4. global function water quality on-line monitoring instrument as described in claim 1, it is characterised in that: the UV, visible light radiant (22)
Wavelength in 270nm~400nm.
5. global function water quality on-line monitoring instrument as described in claim 1, it is characterised in that: the water outlet of the pipeline (1)
Internal diameter is less than the internal diameter of water inlet.
6. global function water quality on-line monitoring instrument as claimed in claim 5, it is characterised in that: the water outlet of the pipeline (1)
Internal diameter is within the 50% of water inlet internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610884805.6A CN106644973B (en) | 2016-10-10 | 2016-10-10 | Global function water quality on-line monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610884805.6A CN106644973B (en) | 2016-10-10 | 2016-10-10 | Global function water quality on-line monitoring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106644973A CN106644973A (en) | 2017-05-10 |
| CN106644973B true CN106644973B (en) | 2019-08-09 |
Family
ID=58853649
Family Applications (1)
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| CN109991385B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Water quality detection system |
| US11125681B2 (en) | 2019-01-24 | 2021-09-21 | Raven Industries, Inc. | Agricultural spectrographic composition sensor and methods for same |
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| CN101285815A (en) * | 2007-04-13 | 2008-10-15 | 中国科学院生态环境研究中心 | Biobehavioral sensors for online water quality safety early warning system |
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