CN106841060A - A kind of water quality detection system with standard value contrast - Google Patents
A kind of water quality detection system with standard value contrast Download PDFInfo
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- CN106841060A CN106841060A CN201611217427.2A CN201611217427A CN106841060A CN 106841060 A CN106841060 A CN 106841060A CN 201611217427 A CN201611217427 A CN 201611217427A CN 106841060 A CN106841060 A CN 106841060A
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- master control
- control computer
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- standard value
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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
Abstract
The invention discloses a kind of water quality detection system with standard value contrast, include spectrum test unit one, spectrum test unit two and power supply, described spectrum test unit one and spectrum test unit two includes light source, detection probe and spectrometer, spectrum test unit one and spectrum test unit two are connected with industrial computer one and industrial computer two respectively, industrial computer one and industrial computer two are connected with master control computer one, described master control computer one is connected to warning device, memory module one and instrument control module, master control computer one is also associated with master control computer two, master control computer two has been also respectively connected with memory module two, display module one and display module two.Physical detection methods being detected present invention uses based on uv-vis spectra, it is to avoid the problem of pollution, increasing another master control computer, whether exceeded, judge simple and clear if can calculate parameters.
Description
Technical field
The present invention relates to environment friendly system technical field, more particularly to a kind of water quality detection system with standard value contrast.
Background technology
Water analysis is that the quality condition and Changing Pattern of water resource are measured and evaluated, and is country and governments at all levels
Develop, management provides scientific basis with water conservation.The quality condition of water resource is generally described with water quality index, often
Water quality index includes COD (COD, Chemical Oxygen Demand), total organic carbon (TOC, Total
Organic Carbon), nitrate nitrogen (NO3-N), the index such as turbidity (TURB).Inspection of China's National Standard Method to many water quality index
Survey method is all to use chemical analysis method.For example, COD uses permanganate index or potassium dichromate method, nitrate nitrogen to use
Pbenoldisulfonic Acid AAS or thymol spectrophotometry method etc..These chemical methodes can relatively accurately measure correspondence
Water quality parameter, but nearly all have that time-consuming, required chemical reagent is more, stability is poor, fault rate is high, make in measurement process
With with maintenance cost is high and secondary pollution problems.
The content of the invention
The object of the invention is exactly to make up the defect of prior art, there is provided a kind of water quality detection with standard value contrast
System.
The present invention is achieved by the following technical solutions：
A kind of water quality detection system with standard value contrast, includes spectrum test unit one, spectrum test unit two
And power supply, described spectrum test unit one and spectrum test unit two include light source, detection probe and spectrometer,
Spectrum test unit one and spectrum test unit two are connected with industrial computer one and industrial computer two respectively, industrial computer
One and industrial computer two be connected with master control computer one, described master control computer one is connected to warning device, deposits
Storage module one and instrument control module, master control computer one are also associated with master control computer two, and master control computer two has been also respectively connected with
Memory module two, display module one and display module two, instrument control module are connected to purging system and flow path system, cleaning system
System connection flow path system, is connected with sample pretreatment apparatus on flow path system, flow path system gives the He of spectrum test unit one respectively
Spectrum test unit two provides test sample, and, to system power supply, sample pretreatment apparatus are by sample for described power supply
Impurity removal, then by flow path system by sample collection to spectrum test unit one and spectrum test unit two, light source pass through into
Light path is penetrated by ultraviolet-visible optical transport to detection probe, light after sample absorbs, by emitting light path to spectrometer, spectrum
Instrument is by photoelectric signal transformation is into digital spectrum data and is transferred to industrial computer one and industrial computer two, industrial computer one
With the uv-visible absorption spectroscopy that industrial computer two respectively obtains water quality, and water quality parameter is calculated, industrial computer one
The water quality parameter that will be calculated respectively with industrial computer two is transmitted to master control computer one, and master control computer one is by each two phase
Corresponding parameter is compared, and when gap exceeds scope set in advance, starts warning device, if gap does not exceed presetting
Scope, master control computer one takes two average values of data as the data of last test, is separately sent to memory module
One and master control computer two in, the standard value of parameters is provided with the master control computer two, master control computer two will be received
Test data be compared with each standard value respectively, if be more than standard value, in display module one show, if less than etc.
In standard value, then shown in display module two, and stored in memory module two, purging system is controlled by instrument control module
System, flow path system is cleaned.
Described detection probe is double optical path difference point detection probes, includes collimation lens and condenser lens, saturating in collimation
Glass sample pond is set between mirror and condenser lens, and the delivery port of described flow path system is connected with sample cell.
Described purging system includes recoil pump, and recoil pump uses air-water mixture stream.
Described sample pretreatment apparatus include the double-deck pond with hollow cavity, and pond internal layer and outer layer are removable
Connection is unloaded, the side wall of pond internal layer is filter screen.
Described light source is optical fiber xenon source.
Described water quality parameter includes COD, TOC, TURB, NO3-N.
It is an advantage of the invention that：Physical detection methods are detected present invention uses based on uv-vis spectra, it is to avoid dirt
The problem of dye, increased two test cells and two industrial computers in addition, prevent because the data error for causing of slipping up is big,
When error is larger, master control computer sends alarm, reminds staff's test error big, detection whether have instrument damage or
Misoperation, reduces the problem of detection mistake, easy to use, and another master control computer is increased in addition, can calculate each ginseng
Whether number is exceeded, judges simple and clear.
Brief description of the drawings
Fig. 1 is operation principle block diagram of the invention.
Specific embodiment
As shown in figure 1, a kind of water quality detection system with standard value contrast, includes spectrum test unit one 1, spectrum
Test cell 22 and power supply 3, described spectrum test unit 1 and spectrum test unit 22 include light source 4, inspection
Probing first 5 and spectrometer 6, spectrum test unit 1 and spectrum test unit 22 are counted with industrial computer 1 and industry respectively
Calculation machine 28 is connected, and industrial computer 1 and industrial computer 28 are connected with master control computer 1, and described master control is calculated
Machine 1 is connected to warning device 10, memory module 1 and instrument control module 12, and master control computer 1 is also associated with master control
Computer 2 13, master control computer 2 13 has been also respectively connected with memory module 2 14, display module 1 and display module 2 16,
Instrument control module 12 is connected to purging system 17 and flow path system 18, the connection flow path system 18 of purging system 17, flow path system
Sample pretreatment apparatus 19 are connected with 18, flow path system 18 is carried to spectrum test unit 1 and spectrum test unit 22 respectively
For test sample, described power supply 3 gives system power supply, and sample pretreatment apparatus 19 are by the Impurity removal in sample, then lead to
Flow path system 18 is crossed by sample collection to spectrum test unit 1 and spectrum test unit 22, light source 4 will by input path
To detection probe 5, after sample absorbs, by emitting light path to spectrometer 6, spectrometer 6 is by light for light for ultraviolet-visible optical transport
Electric signal is converted into digital spectrum data and is transferred to industrial computer 1 and industrial computer 28, the He of industrial computer 1
Industrial computer 28 respectively obtains the uv-visible absorption spectroscopy of water quality, and calculates water quality parameter, industrial computer 1
The water quality parameter that will be calculated respectively with industrial computer 28 is transmitted to master control computer 1, and master control computer 1 is by every two
Individual corresponding parameter is compared, and when gap exceeds scope set in advance, starts warning device, if gap is not beyond advance
The scope of setting, master control computer 1 takes data of two average values of data as last test, is separately sent to storage
In module 1 and master control computer 2 13, the standard value of parameters, master control computer are provided with master control computer 2 13
2 13 test datas that will be received are compared with each standard value respectively, if being more than standard value, in display module 1
Middle display, if being less than or equal to standard value, shows in display module 2 16, and stores in memory module 2 14, cleaning system
System 17 is controlled by instrument control module 12, and flow path system 18 is cleaned.
Described detection probe 5 is double optical path difference point detection probes, includes collimation lens and condenser lens, saturating in collimation
Glass sample pond is set between mirror and condenser lens, and the delivery port of described flow path system is connected with sample cell.
Described purging system 17 includes recoil pump, and recoil pump uses air-water mixture stream.
Described sample pretreatment apparatus 19 include the double-deck pond with hollow cavity, and pond internal layer and outer layer are can
Dismounting connection, the side wall of pond internal layer is filter screen.
Described light source 4 is optical fiber xenon source.
Described water quality parameter includes COD, TOC, TURB, NO3-N.
Ultraviolet-visible law popularization is to determine COD to the absorption intensity of ultraviolet-visible light based on organic matter in measurement water body
The method of value, absorption of the organic matter to ultraviolet light follows Lambert Beer laws, and for sample cell, its light path is constant, organic
Thing, inorganic reduction substance classes and its absorption coefficient are constant, under given conditions the value of COD, can be by it to ultraviolet-visible light
Trap determine.
Due to COD=CODA+CODB,
SoWherein,Wc、n、p、CODBThere is fixation
Value, in the metastable water body of composition, there is good dependency relation in TOC and COD value, can by the COD value of water quality,
To analyze TOC values.
According to Lambert Beer laws, incident light is through the degree and testing sample being attenuated after sample for the detection of turbidity
Turbidity have following relational expression,
In formula, A represents the absorbance of material in solution, and I0 represents incident intensity, and I represents projection luminous intensity, and a is ratio
Example coefficient, b is optical path length, and c is solution concentration, can reflect that its is turbid by the intensity for detecting the transmitted light through testing sample
Angle value.
Ultraviolet spectrophotometry measures water quality nitrate nitrogen, using absorption of the nitrate ion at 220nm wavelength,
The value of nitrate nitrogen is corrected at 275nm as compensation measurement,
Aadj=A220-2A275
Wherein, Aadj is the absorbance after correction, A220It is the absorbance measured at 220nm wavelength, A275It is 275nm wavelength
The absorbance that place measures, after the absorbance being calculated after correction, inquiry obtains corresponding NO3-N's from calibration curve
Amount.
Claims (6)
1. it is a kind of with standard value contrast water quality detection system, it is characterised in that：Include the survey of spectrum test unit one, spectrum
Examination unit two and power supply, described spectrum test unit one and spectrum test unit two include light source, detection probe
And spectrometer, spectrum test unit one and spectrum test unit two be connected with industrial computer one and industrial computer two respectively,
Industrial computer one and industrial computer two are connected with master control computer one, and described master control computer one is connected to report
Alarm device, memory module one and instrument control module, master control computer one are also associated with master control computer two, and master control computer two is also divided
Memory module two, display module one and display module two are not connected with, and instrument control module is connected to purging system and stream system
System, purging system connection flow path system, is connected with sample pretreatment apparatus on flow path system, flow path system gives spectrum test respectively
Unit one and spectrum test unit two provide test sample, and, to system power supply, sample pretreatment apparatus will for described power supply
Impurity removal in sample, then by flow path system by sample collection to spectrum test unit one and spectrum test unit two, light
Source by input path by ultraviolet-visible optical transport to detection probe, after light is by sample absorption, by emitting light path to spectrum
Instrument, spectrometer is industrial by photoelectric signal transformation is into digital spectrum data and is transferred to industrial computer one and industrial computer two
Computer one and industrial computer two respectively obtain the uv-visible absorption spectroscopy of water quality, and calculate water quality parameter, industry
The water quality parameter that computer one and industrial computer two will be calculated respectively is transmitted to master control computer one, and master control computer one will
The corresponding parameter of each two is compared, and when gap exceeds scope set in advance, starts warning device, if gap does not exceed
Scope set in advance, master control computer one takes two average values of data as the data of last test, is separately sent to
In memory module one and master control computer two, the standard value of parameters, master control computer two are provided with master control computer two
The test data that will be received is compared with each standard value respectively, if being more than standard value, is shown in display module one,
If being less than or equal to standard value, shown in display module two, and stored in memory module two, purging system is by instrument control module
It is controlled, flow path system is cleaned.
2. it is according to claim 1 it is a kind of with standard value contrast water quality detection system, it is characterised in that：Described inspection
Probing head is double optical path difference point detection probes, collimation lens and condenser lens is included, between collimation lens and condenser lens
Glass sample pond is set, and the delivery port of described flow path system is connected with sample cell.
3. it is according to claim 1 it is a kind of with standard value contrast water quality detection system, it is characterised in that：Described is clear
The system of washing includes recoil pump, and recoil pump uses air-water mixture stream.
4. it is according to claim 1 it is a kind of with standard value contrast water quality detection system, it is characterised in that：Described sample
Product pretreatment unit includes the double-deck pond with hollow cavity, and pond internal layer and outer layer are to be detachably connected, pond internal layer
Side wall be filter screen.
5. it is according to claim 1 it is a kind of with standard value contrast water quality detection system, it is characterised in that：Described light
Source is optical fiber xenon source.
6. it is according to claim 1 it is a kind of with standard value contrast water quality detection system, it is characterised in that：Described water
Matter parameter includes COD, TOC, TURB, NO3-N.
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| CN201611217427.2A CN106841060A (en) | 2016-12-26 | 2016-12-26 | A kind of water quality detection system with standard value contrast |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939665A (en) * | 2018-07-26 | 2018-12-07 | 珠海格力电器股份有限公司 | Water purifier filter gauze cleaning method, apparatus, system and water purifier |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202748313U (en) * | 2012-09-21 | 2013-02-20 | 成都君万科技有限公司 | Error detection and elimination system of visibility detection instrument |
| CN104459065A (en) * | 2013-09-12 | 2015-03-25 | 西安众智惠泽光电科技有限公司 | On-line monitoring system for chemical oxygen demand |
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- 2016-12-26 CN CN201611217427.2A patent/CN106841060A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202748313U (en) * | 2012-09-21 | 2013-02-20 | 成都君万科技有限公司 | Error detection and elimination system of visibility detection instrument |
| CN104459065A (en) * | 2013-09-12 | 2015-03-25 | 西安众智惠泽光电科技有限公司 | On-line monitoring system for chemical oxygen demand |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939665A (en) * | 2018-07-26 | 2018-12-07 | 珠海格力电器股份有限公司 | Water purifier filter gauze cleaning method, apparatus, system and water purifier |
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Application publication date: 20170613 |