CN107247083A - A kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system and method - Google Patents
A kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system and method Download PDFInfo
- Publication number
- CN107247083A CN107247083A CN201710429020.4A CN201710429020A CN107247083A CN 107247083 A CN107247083 A CN 107247083A CN 201710429020 A CN201710429020 A CN 201710429020A CN 107247083 A CN107247083 A CN 107247083A
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- pollution
- early warning
- line monitoring
- control process
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
Abstract
The present invention provides a kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system and method, and the system includes heavy metal on-line monitoring source of early warning, heavy metal real-time processing device, heavy metal pollution monitor supervision platform and control process unit.Scene on-line monitoring early warning is combined with processing heavy metal pollution process in real time, it is rapid and simple with testing, as a result accurate, with low cost, test limit is low and the characteristics of high sensitivity, to sample without destructiveness, and detection cycle is greatly shortened, it is adapted to the content of scene on-line checking heavy metal and handles heavy metal pollution in real time, reduce the professional skill requirement to operating personnel, realizes the technical goal that heavy metal pollution on-line monitoring early warning and processing integration in real time are carried out in farmland.Moreover, the system both can carry out concentration mensuration to the heavy metal species of certain in region, the total heavy metal pollution level in region can be also measured, measurement sensitivity is higher, and any content of beary metal can be detected simultaneously.
Description
Technical field
The present invention relates to heavy metal pollution processing technology field, pollute online more particularly, to a kind of heavy metals in farmland
Monitoring and warning and real time processing system and method.
Background technology
In recent years, the heavy metal pollution phenomenon of soil becomes increasingly serious, is arranged mainly due to the exceeded violation of industrial production
Put, arbitrarily the toppling over of town sewage and house refuse, the sewage irrigation in agricultural production and agricultural chemicals, the unreasonable of chemical fertilizer are used
Etc. factor so that heavy metal contaminants enter in agricultural soil in several ways.And heavy metal has a difficult degradation, easily accumulated
Feature, the heavy metal being enriched in soil is difficult, with water leaching, to be difficult to be degraded by microorganisms, and can make with the absorption of root system of plant
With entering in crops body, growing for influence crop can cause the underproduction of crop after accumulating to a certain extent, have no harvest very
To death.More seriously, heavy metal can enter human body with food chain, and protein, organized enzyme with human body etc. are combined, and are made
It is distorted, and loses physiologically active, so that the symptoms such as chronic or acute poisoning occurs in human body, the health to human body is caused sternly
Endanger again, heavy metal pollution of soil problem turns into current environmental problem urgently to be resolved hurrily.
At present, the detection method of heavy metal mainly have mass spectrometry, atomic spectroscopy, UV-VIS spectrophotometry,
Electrochemical methods etc..Mass spectrometry is the side detected after the ion of motion is separated by karyoplasmic ratio with electric field and magnetic field
Method.It is disadvantageous in that instrument cost is high, preprocessing process is cumbersome, and automation equipment is realized relatively difficult.Atomic spectroscopy energy
Content of beary metal in sample is effectively analyzed, but sample pre-treatments are complicated, and analysis time is long.Ultraviolet-ray visible absorbing point
Light photometry is monochromatic light to be obtained using monochromators such as prism or gratings and the absorbing ability to test substance is measured
Method, this method is limited in that interference caused by overlap of spectral lines and the triviality of operation.Electrochemical measuring technique is
Develop a kind of faster method in recent years, the test limit of electrochemical methods is relatively low, and measurement sensitivity is higher, be it is a kind of substantially
Environmentally safe green technology, receives the extensive attention of domestic and international researcher.But this method instrument is complicated, operating process
It is cumbersome, it is not suitable for live detection real-time.These traditional detection method complex operations, spend high, every time can only
The one or more of constituent contents of detection.
The minimizing technology of heavy metal mainly has elution method, electric heating repairing method, adds soil conditioner, pumps out processing in farmland
Method, biological restoration etc..Elution method is that the water that can improve the water miscible chemical substance of heavy metal using washing lotion or addition will
Pollutant is flushed to the outer layer of root.Elution method is relatively good for the highly polluted regulation effect of heavy metal, is relatively more suitable for light soil
Earth, but its investment is big, easily causes the nutrient loss and underground water pollution of soil.Electric heating repairing method is that soil is heated, and makes it
Heating parses noxious pollutant and unifies collection processing, is generally used for handling readily volatilized noxious pollutant, not enough
Part is the organic matter and constitution water that this recovery technique can be destroyed in soil.Add soil conditioner method regulation effect and
Moderate cost, is applicable polluting less serious soil, but heavy metal is possible to meeting reactivation.It is a kind of suitable to pump out facture
The decontamination method on the spot polluted for deep subsoil or aquifer, is that inorganic agent is injected into soil from injection well, consolidates absorption
The pollutant being scheduled on soil particle is parsed and with treatment fluid to soil body low travel, then will by the pumped well of the other end
Treatment fluid containing pollutant, which is pumped, to be handled, but processing procedure will consume substantial amounts of water, and the inorganic agent having also can in itself
Pollute.In addition, pumping out processing is difficult to ensure that pollutant and inorganic agent are fully contacted, it is also difficult to it is determined that the complete full journey of processing
Degree.Biological restoration using biotechnology come the soil of pollution administration, cut down by biological heavy metal in purification soil or
Heavy metal toxicity is reduced, this method is easily operated, but biomass is low, selective to metal, be unsuitable for various metals and be combined
Contaminated soil.
Current heavy metal detection method and processing method is carried out separately, and there is high, cumbersome, the process of cost
Complicated the problems such as, the operating procedure or redundant and complicated of these operating methods, or disturbing factor are more, or need to use costly
Large-sized analytic instrument, and have very high professional skill requirement to operating personnel, can only mostly be completed in laboratory, it is impossible to
Meet scene, the technical requirements of quick online detection.
The content of the invention
It is an object of the invention to provide a kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system and method,
Exist so that the monitoring and processing method that solve current heavy metal are cumbersome, process is complicated, test limit is low and are difficult to scene
The problems such as line is detected.
According to the technical scheme of the present invention, there is provided a kind of heavy metals in farmland pollution on-line monitoring early warning and processing in real time
System, the system includes heavy metal on-line monitoring source of early warning, heavy metal real-time processing device and control process unit, described heavy
Metal on-line monitoring source of early warning is connected with the control process unit respectively with heavy metal real-time processing device；
The heavy metal on-line monitoring source of early warning is used for the heavy metal concentration for monitoring soil, and serious according to soil pollution
Degree sends pre-warning signal；
The control process unit is for reception and analysis and early warning signal and sends control instruction, to enter to each unit module
Row scheduling is controlled；
The heavy metal real-time processing device is used to receive control instruction, and heavy metal carries out adsorption treatment.
As the further improvement project of above-mentioned technical proposal, the heavy metal on-line monitoring source of early warning includes connecting successively
Sampler, pretreatment unit, perception unit, transmitter, analog-digital converter and the prior-warning device connect.
The sampler includes drill bit, extension rod, scraper and soil locker room, and the extension rod is marked with scale, uses
Demarcated in the depth of soil to sample.
The pretreatment unit includes mill and pedotheque bottle.
It is described perception unit include heavy metal sensor, the heavy metal sensor by N doping defective graphene
Material be made.
The transmitter is used to the measured value of the heavy metal sensor being converted into electric signal.
As the further improvement project of above-mentioned technical proposal, the analog-digital converter is built-in with SPSS softwares, and SPSS is soft
Part is used to obtain target heavy metal concentration and resistance parameter relation to resistance value and target heavy metal concentration value progress successive Regression
Formula.
The analog-digital converter is used for the current/voltage signal for gathering transmitter output, is corresponding by analog-to-digital conversion
Data signal, built-in SPSS softwares can carry out successive Regression to resistance value and target heavy metal concentration value and obtain a target huge sum of money
Belong to concentration and resistance parameter relational expression, extract the relational expression coefficient, the as computing in the operational formula of target heavy metal concentration
The concrete numerical value of parameter.
The prior-warning device is used for heavy metal concentration monitor data and carries out judgement processing, if Monitoring Data is default more than certain
Threshold value, the prior-warning device can send sound and light alarm signal and be alarmed.
As the further improvement project of above-mentioned technical proposal, the heavy metal real-time processing device includes heavy metal adsorption
Sorbing material is provided with device, the heavy metal adsorption device, the sorbing material is the defective graphene of N doping.
The control process unit is received after pre-warning signal, and send control instruction is used to connect the pretreatment dress to open
The valve with the heavy metal real-time processing device is put, pretreated sample is entered into the heavy metal real-time processing device
The processing of row Adsorption of Heavy Metals.
As the further improvement project of above-mentioned technical proposal, the system also includes being connected with the control process unit
Heavy metal pollution monitor supervision platform, the heavy metal pollution monitor supervision platform is used for according to the control instruction of the control process unit
Drawing area heavy metal pollution figure.
The heavy metal pollution monitor supervision platform includes sensor node, GPRS module and computer outlet terminal；
The sensor node is the wireless sensor network node in region；The control process unit sends instruction and existed
Wireless sensor network node is disposed with certain deployment way in region；
The GPRS module, for collecting the geographical location information of the sensor node and transmitting to the control process
Unit；
The computer outlet terminal, for analyzing the control instruction that the control process unit is sent, a drawing area huge sum of money
Category pollution figure, reference is provided to find source of heavy metal pollution and preventing and treating heavy metal pollution.
According to another technical scheme of the present invention, there is provided a kind of heavy metals in farmland pollution on-line monitoring early warning and place in real time
Reason method, this method includes：
S1. according to heavy metal concentration calculation formula and the resistance value of tested point, the heavy metal element concentration of tested point is obtained
Value and the heavy metal comprehensive pollution factor；
S2. judge that, when the heavy metal comprehensive pollution factor of tested point is more than preset value, heavy metal on-line monitoring early warning is set
Preparation goes out pre-warning signal；
S3. control process unit receives pre-warning signal, and controls heavy metal real-time processing device to carry out at heavy metal adsorption
Reason.
As the further improvement project of above-mentioned technical proposal, in the S1, the heavy metal element concentration value of tested point leads to
Following steps are crossed to obtain：
S11., heavy metals in farmland pollution on-line monitoring early warning and real time processing system are installed in detection zone；
S12. detection zone reference point is sampled by systematic sampling device；
S13. sampling sample is pre-processed by pipeline into pretreatment unit；
S14. pretreated sample enters perception unit, and the signal of perception is sent into change by heavy metal sensor
Send device；
S15. the measured value of heavy metal sensor is converted into electric signal by transmitter, and is transferred to analog-digital converter；
S16. the current/voltage signal of analog-digital converter collection transmitter output, is corresponding numeral by analog-to-digital conversion
Signal, the SPSS softwares built in analog-digital converter carry out successive Regression to resistance value and target heavy metal element concentration value and obtain mesh
Indicated weight metallic element concentration and resistance parameter relational expression, extract the relational expression coefficient, produce the ginseng of heavy metal concentration calculation formula
Numerical value；
S17. the resistance value observed according to tested point, according to heavy metal concentration calculation formula, obtains the weight of tested point
Metallic element concentration value, heavy metal concentration calculation formula is：
Wherein, c is the concentration of heavy metal element, and R is the resistance value measured, b0、b1And b2It is parameter；The soil measured
The concentration of each Heavy Metallic Elements, is respectively labeled as c in earth1, c2, c3... cn。
As the further improvement project of above-mentioned technical proposal, in the S1, the heavy metal comprehensive pollution factor of tested point,
Obtained by following steps：
Pass throughThe pollution factor for obtaining various heavy metal elements is calculated, wherein, pnFor n heavy metal element
Pollution factor, cnFor the concentration of n heavy metal element, snIt is the national regulation of the n heavy metal element contained in soil
Standard limitation；
According to the pollution factor of each Heavy Metallic Elements in tested point, pass through formula
The heavy metal comprehensive pollution factor in sample is drawn, wherein, I is the heavy metal comprehensive pollution factor, pimaxIt is heavy metal
Element pollution factor p1, p2, p3... ..pnIn maximum.
As the further improvement project of above-mentioned technical proposal, control process unit controls heavy metal pollution monitor supervision platform,
Wireless sensor node is disposed in detection zone, the geographical location information of node is transferred to control process list via GPRS module
Member, control process unit sends instructions to computer outlet terminal with drawing area heavy metal pollution figure.
Based on above-mentioned technical proposal, heavy metals in farmland pollution on-line monitoring early warning proposed by the present invention and real time processing system
And method, scene on-line monitoring early warning is combined with processing heavy metal pollution process in real time, the system and method has test
It is rapid and simple, as a result accurately, low with low cost, test limit and the characteristics of high sensitivity, to sample without destructiveness, and detection week
Phase greatly shortens, and is adapted to the content of scene on-line checking heavy metal and handles heavy metal pollution in real time, reduces to operating personnel
Professional skill requirement, reduction manpower, the requirement of financial resources realize in farmland heavy metal pollution on-line monitoring early warning and in real time place
The technical goal that reason integration is carried out.Moreover, the system both can carry out concentration mensuration to the heavy metal species of certain in region, also can be right
Total heavy metal pollution level in region is measured.Traditional detection method complex operation, spends high, can only detect every time
One or more of constituent contents.And the graphene electrochemical sensor test limit of N doping used in the inventive method is relatively low,
Measurement sensitivity is higher, and any content of beary metal can be detected simultaneously.
Brief description of the drawings
Fig. 1 is to pollute on-line monitoring early warning and the system diagram handled in real time according to the heavy metals in farmland of the embodiment of the present invention；
Fig. 2 is the structural representation for monitoring source of early warning on-line according to the heavy metal of the embodiment of the present invention；
Fig. 3 is the heavy metal sensor and the schematic arrangement of adsorber material according to the embodiment of the present invention；
Fig. 4 is the flow that on-line monitoring early warning and real-time processing method are polluted according to the heavy metals in farmland of the embodiment of the present invention
Figure.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention and its between be combined, this
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to the present invention
The scope of protection.
Wireless sensor network has broken away from the restriction of infrastructure as a kind of self-organizing network, in system laying, safeguards
It is very flexible with extension aspect, thus in environmental monitoring, special hair contamination accident, wireless senser has it to be difficult to the advantage substituted.
Nano material has big specific surface area, excellent electron transmission ability, and the nano material of functionalization is with more unique excellent
Performance.Electrochemical sensor constructed by electrochemistry combination nanometer technology is easy to operate in environmental contaminants context of detection, detection
Speed is fast.Detection of the electrochemical sensor to electroactive substance is one and reaches electrode surface from solid or fluid sample
Electric charge transmission and Chemical recognition process.The graphene nano material of N doping has excellent calorifics, mechanics and electrical property
Matter, such as high conductivity, perfect quantum tunneling effect, big specific surface area.Therefore electrochemistry made from the graphene of N doping
Sensor has good performance in the context of detection of heavy metal.In addition, around the graphene nano material surface atom of N doping
Lack adjacent atom so that material surface is due to there are a large amount of remaining dangling bonds with undersaturated property, these bands
The chemical bond of activity is very easy to be combined with external substance, so as to improve reactivity of the measured matter in electrode surface.
The soil that discharge for the irrational utilization, mining and domestic waste of current agricultural chemicals and chemical fertilizer is caused
Heavy metal pollution problem, according to one embodiment of present invention, with reference to Fig. 1, there is provided a kind of pollution of heavy metals in farmland is online
Monitoring and warning and real time processing system, the system include heavy metal on-line monitoring source of early warning, heavy metal real-time processing device and
Control process unit, heavy metal on-line monitoring source of early warning and heavy metal real-time processing device respectively with the control process
Unit is connected；
The heavy metal on-line monitoring source of early warning is used for the heavy metal concentration for monitoring soil, and serious according to soil pollution
Degree sends acousto-optic pre-warning signal；The control process unit is for reception and analysis and early warning signal and sends control instruction, with
Scheduling controlling is operated to each unit module；The heavy metal real-time processing device is used to receive control instruction, and to a huge sum of money
Category carries out adsorption treatment.
According to one embodiment of present invention, with reference to Fig. 2, the heavy metal on-line monitoring source of early warning is included successively
Sampler, pretreatment unit, perception unit, transmitter, analog-digital converter and the prior-warning device of connection.
The sampler includes drill bit, extension rod, scraper and soil locker room, and the extension rod is marked with scale, uses
Demarcated in the depth of soil to sample, single sampling amount can be 0.1-1g, and the minimum interval of continuous sampling is 3min.
The pretreatment unit includes mill and pedotheque bottle, and the quantity of maximum pedotheque bottle is preferably 5.
It is described perception unit include heavy metal sensor, the heavy metal sensor by N doping defective graphene
Material be made, its molecular structure is as shown in figure 3, wherein, the dark a atoms of color represent nitrogen-atoms, the shallower b atoms of color
Represent carbon atom.
The transmitter is used to the measured value of the heavy metal sensor being converted into electric signal, may be selected to be output as 4-
20mA current signal or 0-10V voltage signal.
The analog-digital converter is built-in with SPSS softwares, and SPSS softwares are used to enter resistance value with target heavy metal concentration value
Row successive Regression obtains target heavy metal concentration and resistance parameter relational expression.
The analog-digital converter is used for the current/voltage signal for gathering transmitter output, is corresponding by analog-to-digital conversion
Data signal, built-in SPSS softwares can carry out successive Regression to resistance value and target heavy metal concentration value and obtain a target huge sum of money
Belong to concentration and resistance parameter relational expression, extract the relational expression coefficient, the as computing in the operational formula of target heavy metal concentration
The concrete numerical value of parameter.
The prior-warning device is used for heavy metal concentration monitor data and carries out judgement processing, if Monitoring Data is default more than certain
Threshold value, the prior-warning device can send sound and light alarm signal and be alarmed.
According to one embodiment of present invention, the heavy metal real-time processing device includes heavy metal adsorption device, institute
State and sorbing material is provided with heavy metal adsorption device, the sorbing material is the defective graphene of N doping.
The control process unit is received after pre-warning signal, and send control instruction is used to connect the pretreatment dress to open
The valve with the heavy metal real-time processing device is put, pretreated sample is entered into the heavy metal real-time processing device
The processing of row Adsorption of Heavy Metals.
According to one embodiment of present invention, the system also includes the huge sum of money being connected with the control process unit
Belong to contamination monitoring platform, the heavy metal pollution monitor supervision platform is used to draw area according to the control instruction of the control process unit
Domain heavy metal pollution figure.
According to one embodiment of present invention, the heavy metal pollution monitor supervision platform includes sensor node, GPRS
Module and computer outlet terminal；
The sensor node is the wireless sensor network node in region；The control process unit sends instruction and existed
Wireless sensor network node is disposed with certain deployment way in region；
The GPRS module, for collecting the geographical location information of the sensor node and transmitting to the control process
Unit；
The computer outlet terminal, for analyzing the control instruction that the control process unit is sent, a drawing area huge sum of money
Category pollution figure, reference is provided to find source of heavy metal pollution and preventing and treating heavy metal pollution.
According to one embodiment of present invention, with reference to Fig. 4, there is provided a kind of pollution on-line monitoring early warning of heavy metals in farmland
With real-time processing method, this method includes：
Step (1)：Heavy metals in farmland pollution on-line monitoring early warning and in real time place are being installed where tested point in detection zone
Reason system.
Step (2)：Detection zone reference point is sampled by systematic sampling device.
Step (3)：Sampling sample is pre-processed by pipeline into pretreatment unit.
Step (4)：Pretreated sample enters perception unit, is transmitted the signal of perception by heavy metal sensor
To transmitter.Wherein perceive the heavy metal sensor that unit includes being made up of the defective graphene of N doping.
Step (5)：The measured value of heavy metal sensor is converted into by transmitter by electric signal, and is transferred to analog-to-digital conversion
Device.
Step (6)：The current/voltage signal of analog-digital converter collection transmitter output, is corresponding by analog-to-digital conversion
Data signal, built-in SPSS softwares carry out successive Regression to resistance value and target heavy metal element concentration value and obtain a target huge sum of money
Belong to concentration of element and resistance parameter relational expression, extract the relational expression coefficient, the as parameter value of heavy metal concentration calculation formula.
Step (7)：According to tested point it was observed that resistance numerical value, according to heavy metal concentration calculation formula, obtain to be measured
The heavy metal element concentration value of point.Heavy metal concentration calculation formula is：
Wherein, c is the concentration of heavy metal element, and R is the resistance value measured, b0, b1And b2It is parameter.The soil measured
The concentration of each Heavy Metallic Elements, is respectively labeled as c in earth1, c2, c3... cn。
Step (8)：Each heavy metal species in tested point are calculated according to the heavy metal concentration of the tested point obtained in step (7)
Pollution factor, is respectively labeled as p1, p2, p3, p4... ..pn, calculation formula can be expressed as：
Wherein snIt is the state specified standards limitation of the n heavy metal element contained in soil.
Step (9)：The pollution factor of each heavy metal species in the tested point calculated according to step (8), can draw weight in sample
The metal comprehensive pollution factor：
Wherein, I is the heavy metal comprehensive pollution factor, pimaxIt is heavy metal pollution factor p1, p2, p3... ..pnIn maximum
Value.
Step (10)：When the heavy metal comprehensive pollution factor I of tested point is more than certain preset value m, it is preferable that this embodiment party
Case chooses m as I decision threshold.
Step (11)：If I>M, illustrates that the tested point heavy metal pollution is serious, analog-digital converter transmits signal and filled to early warning
Put.
Step (12)：Prior-warning device sends acousto-optic pre-warning signal to control process unit, and control process unit sends order
Start the valve for connecting the pretreatment unit and the heavy metal real-time processing device, make heavy metal real-time processing device
Heavy metal adsorption is carried out to pretreated soil, mitigates the heavy metal pollution of tested point, wherein heavy metal real-time processing device
It is made up of the defective graphene of N doping.
Step (13)：Control process unit to heavy metal pollution monitor supervision platform send control instruction, in detection zone with
Specific deployments mode disposes wireless sensor network node, and the geographical location information of node is transferred at control via GPRS module
Unit is managed, control process unit sends instructions to computer outlet terminal drawing area heavy metal pollution figure.
Heavy metals in farmland pollution on-line monitoring early warning and real time processing system and method that the embodiment of the present invention is proposed, will be existing
Field on-line monitoring early warning is combined with processing heavy metal pollution process in real time, and the system and method has test rapid and simple, knot
Really accurate, with low cost, test limit is low and the characteristics of high sensitivity, sample is greatly shortened without destructiveness, and detection cycle,
It is adapted to the content of scene on-line checking heavy metal and handles heavy metal pollution in real time, reducing will to the professional skill of operating personnel
Ask, reduction manpower, the requirement of financial resources, realize heavy metal pollution on-line monitoring early warning and processing integration in real time in farmland and carry out
Technical goal.
The monitoring method and minimizing technology that the embodiment of the present invention solves current heavy metal spend high, cumbersome, mistake
Journey is complicated, test limit is low, it is impossible to review pollution sources first order issue, using on-line monitoring early warning with going heavy metal pollution removing phase in real time
With reference to method reduce cost, simplify operation, it is sensitive as electrochemical sensor to improve test limit using the graphene of N doping
Degree, using the geographical location information of GPRS module monitoring node, is carried to find source of heavy metal pollution and preventing and treating heavy metal pollution
Use for reference for reference.
Moreover, the system of the embodiment of the present invention both can carry out concentration mensuration, Ye Kedui areas to the heavy metal species of certain in region
Total heavy metal pollution level in domain is measured.Traditional detection method complex operation, spends high, one can only be detected every time
Plant or several constituent contents.And the graphene electrochemical sensor test limit of N doping used in the inventive method is relatively low, survey
Try sensitivity higher, any content of beary metal can be detected simultaneously.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system, it is characterised in that online including heavy metal
Monitoring and warning equipment, heavy metal real-time processing device and control process unit, heavy metal on-line monitoring source of early warning with again
Metal real-time processing device is connected with the control process unit respectively；
The heavy metal on-line monitoring source of early warning is used for the heavy metal concentration for monitoring soil, and according to the soil pollution order of severity
Send pre-warning signal；
The control process unit is for reception and analysis and early warning signal and sends control instruction；
The heavy metal real-time processing device is used to receive control instruction, and heavy metal carries out adsorption treatment.
2. system according to claim 1, it is characterised in that the heavy metal on-line monitoring source of early warning includes connecting successively
Sampler, pretreatment unit, perception unit, transmitter, analog-digital converter and the prior-warning device connect；
The sampler includes drill bit, extension rod, scraper and soil locker room, and the extension rod is marked with scale, for pair
The depth of soil of sample is demarcated；
The pretreatment unit includes mill and pedotheque bottle；
It is described perception unit include heavy metal sensor, the heavy metal sensor by N doping defective graphene material
Material is made；
The transmitter is used to the measured value of the heavy metal sensor being converted into electric signal；
The analog-digital converter is used for the current/voltage signal for exporting transmitter, is believed by analog-to-digital conversion for corresponding numeral
Number.
3. system according to claim 2, it is characterised in that the analog-digital converter is used for resistance value and a target huge sum of money
Category concentration value carries out successive Regression and obtains target heavy metal concentration and resistance parameter relational expression.
4. system according to claim 1, it is characterised in that the heavy metal real-time processing device includes heavy metal adsorption
Sorbing material is provided with device, the heavy metal adsorption device, the sorbing material is the defective graphene of N doping.
5. system according to claim 1, it is characterised in that the system also includes being connected with the control process unit
Heavy metal pollution monitor supervision platform, the heavy metal pollution monitor supervision platform is used for according to the control instruction of the control process unit
Drawing area heavy metal pollution figure.
6. system according to claim 5, it is characterised in that the heavy metal pollution monitor supervision platform includes sensor section
Point, GPRS module and computer outlet terminal；
The sensor node is the wireless sensor network node in region；
The GPRS module, for collecting the geographical location information of the sensor node and transmitting to the control process list
Member；
The computer outlet terminal, for analyzing the control instruction that the control process unit is sent, drawing area is heavy metal-polluted
Dye figure.
7. a kind of heavy metals in farmland pollution on-line monitoring early warning and real-time processing method, this method include：
S1. according to heavy metal concentration calculation formula and the resistance value of tested point, obtain tested point heavy metal element concentration value and
The heavy metal comprehensive pollution factor；
S2. judge when the heavy metal comprehensive pollution factor of tested point is more than preset value, heavy metal on-line monitoring source of early warning hair
Go out pre-warning signal；
S3. control process unit receives pre-warning signal, and controls heavy metal real-time processing device to carry out heavy metal adsorption processing.
8. method according to claim 7, it is characterised in that the heavy metal element concentration value of tested point in the S1, leads to
Following steps are crossed to obtain：
S11., heavy metals in farmland pollution on-line monitoring early warning and real time processing system are installed in detection zone；
S12. detection zone reference point is sampled by systematic sampling device；
S13. sampling sample is pre-processed by pipeline into pretreatment unit；
S14. pretreated sample enters perception unit, and the signal of perception is sent into pick-up by heavy metal sensor
Device；
S15. the measured value of heavy metal sensor is converted into electric signal by transmitter, and is transferred to analog-digital converter；
S16. the current/voltage signal of analog-digital converter collection transmitter output, is corresponding data signal by analog-to-digital conversion,
SPSS softwares built in analog-digital converter carry out successive Regression to resistance value and target heavy metal element concentration value and obtain target weight
Metallic element concentration and resistance parameter relational expression, extract the relational expression coefficient, produce the parameter value of heavy metal concentration calculation formula；
S17. the resistance value observed according to tested point, according to heavy metal concentration calculation formula, obtains the heavy metal of tested point
Concentration of element value, heavy metal concentration calculation formula is：
Wherein, c is the concentration of heavy metal element, and R is the resistance value measured, b0、b1And b2It is parameter.
9. method according to claim 8, it is characterised in that the heavy metal comprehensive pollution factor of tested point in the S1,
Obtained by following steps：
Pass throughThe pollution factor for obtaining various heavy metal elements is calculated, wherein, pnFor the pollution of n heavy metal element
The factor, cnFor the concentration of n heavy metal element, snIt is the state specified standards of the n heavy metal element contained in soil
Limitation；
According to the pollution factor of each Heavy Metallic Elements in tested point, pass through formula
<mrow>
<mi>I</mi>
<mo>=</mo>
<msqrt>
<mfrac>
<mrow>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mn>1</mn>
<mn>3</mn>
</mfrac>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>i</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</munderover>
<msub>
<mi>P</mi>
<mi>i</mi>
</msub>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<mo>+</mo>
<msubsup>
<mi>P</mi>
<mrow>
<mi>i</mi>
<mi>m</mi>
<mi>a</mi>
<mi>x</mi>
</mrow>
<mn>2</mn>
</msubsup>
</mrow>
<mn>2</mn>
</mfrac>
</msqrt>
<mo>,</mo>
</mrow>
The heavy metal comprehensive pollution factor in sample is drawn, wherein, I is the heavy metal comprehensive pollution factor, pimaxIt is that heavy metal element is dirty
Contaminate factor p1, p2, p3... ..pnIn maximum.
10. method according to claim 7, it is characterised in that control process unit controls heavy metal pollution monitor supervision platform,
Wireless sensor node is disposed in detection zone, the geographical location information of node is transferred to control process list via GPRS module
Member, control process unit sends instructions to computer outlet terminal with drawing area heavy metal pollution figure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710429020.4A CN107247083B (en) | 2017-06-08 | 2017-06-08 | Online monitoring, early warning and real-time processing system and method for farmland heavy metal pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710429020.4A CN107247083B (en) | 2017-06-08 | 2017-06-08 | Online monitoring, early warning and real-time processing system and method for farmland heavy metal pollution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107247083A true CN107247083A (en) | 2017-10-13 |
| CN107247083B CN107247083B (en) | 2023-08-04 |
Family
ID=60019028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710429020.4A Active CN107247083B (en) | 2017-06-08 | 2017-06-08 | Online monitoring, early warning and real-time processing system and method for farmland heavy metal pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107247083B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318543A (en) * | 2018-01-30 | 2018-07-24 | 河海大学常州校区 | A kind of heavy metal ion sensor and its operating method based on grapheme material |
| CN108647826A (en) * | 2018-05-11 | 2018-10-12 | 广东省生态环境技术研究所 | A kind of construction method and device of heavy metal-polluted soil environmental risk prediction model |
| CN108746193A (en) * | 2018-07-25 | 2018-11-06 | 梧州市兴能农业科技有限公司 | Heavy metals in farmland pollutes on-line early warning system |
| CN108896737A (en) * | 2018-07-03 | 2018-11-27 | 梧州市兴能农业科技有限公司 | A kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system |
| CN108966169A (en) * | 2018-07-02 | 2018-12-07 | 梧州市兴能农业科技有限公司 | For the Analysis on heavy metal pollution early warning system of agricultural land soil |
| CN109389516A (en) * | 2018-11-26 | 2019-02-26 | 佛山单常科技有限公司 | A kind of soil pollution monitoring system of real-time intelligent |
| CN111693578A (en) * | 2020-06-11 | 2020-09-22 | 中国农业科学院农业信息研究所 | Crop growth information monitoring method and device and manufacturing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811022A (en) * | 2010-05-06 | 2010-08-25 | 杭州贝洋科技有限公司 | Preparation of heavy metal adsorbent, adsorbent plunger and application |
| CN104111264A (en) * | 2014-08-01 | 2014-10-22 | 广东省粮食科学研究所 | Methods for quickly detecting content of heavy metal elements in rice and evaluating comprehensive pollution index of heavy metal elements |
| CN104407040A (en) * | 2014-11-25 | 2015-03-11 | 苏州市欧博锐自动化科技有限公司 | System for automatic detection of concentration of heavy metal ions in soil and soil remediation |
| CN106444534A (en) * | 2016-11-17 | 2017-02-22 | 江苏智石科技有限公司 | Control method of cultivated soil monitoring system |
| WO2017065395A1 (en) * | 2015-10-13 | 2017-04-20 | (주)썬텍엔지니어링 | Real-time multiple-item heavy metal analysis apparatus, real-time multiple-item heavy metal analysis method, and method for producing sensor of heavy metal analysis apparatus |
| CN106607453A (en) * | 2017-01-20 | 2017-05-03 | 北京佳业佳境环保科技有限公司 | Environmental risk preventing and controlling and contaminated site repair method for gasoline station |
| CN207081691U (en) * | 2017-06-08 | 2018-03-09 | 北京农业信息技术研究中心 | A kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system |
-
2017
- 2017-06-08 CN CN201710429020.4A patent/CN107247083B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811022A (en) * | 2010-05-06 | 2010-08-25 | 杭州贝洋科技有限公司 | Preparation of heavy metal adsorbent, adsorbent plunger and application |
| CN104111264A (en) * | 2014-08-01 | 2014-10-22 | 广东省粮食科学研究所 | Methods for quickly detecting content of heavy metal elements in rice and evaluating comprehensive pollution index of heavy metal elements |
| CN104407040A (en) * | 2014-11-25 | 2015-03-11 | 苏州市欧博锐自动化科技有限公司 | System for automatic detection of concentration of heavy metal ions in soil and soil remediation |
| WO2017065395A1 (en) * | 2015-10-13 | 2017-04-20 | (주)썬텍엔지니어링 | Real-time multiple-item heavy metal analysis apparatus, real-time multiple-item heavy metal analysis method, and method for producing sensor of heavy metal analysis apparatus |
| CN106444534A (en) * | 2016-11-17 | 2017-02-22 | 江苏智石科技有限公司 | Control method of cultivated soil monitoring system |
| CN106607453A (en) * | 2017-01-20 | 2017-05-03 | 北京佳业佳境环保科技有限公司 | Environmental risk preventing and controlling and contaminated site repair method for gasoline station |
| CN207081691U (en) * | 2017-06-08 | 2018-03-09 | 北京农业信息技术研究中心 | A kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318543A (en) * | 2018-01-30 | 2018-07-24 | 河海大学常州校区 | A kind of heavy metal ion sensor and its operating method based on grapheme material |
| CN108647826A (en) * | 2018-05-11 | 2018-10-12 | 广东省生态环境技术研究所 | A kind of construction method and device of heavy metal-polluted soil environmental risk prediction model |
| CN108966169A (en) * | 2018-07-02 | 2018-12-07 | 梧州市兴能农业科技有限公司 | For the Analysis on heavy metal pollution early warning system of agricultural land soil |
| CN108896737A (en) * | 2018-07-03 | 2018-11-27 | 梧州市兴能农业科技有限公司 | A kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system |
| CN108746193A (en) * | 2018-07-25 | 2018-11-06 | 梧州市兴能农业科技有限公司 | Heavy metals in farmland pollutes on-line early warning system |
| CN109389516A (en) * | 2018-11-26 | 2019-02-26 | 佛山单常科技有限公司 | A kind of soil pollution monitoring system of real-time intelligent |
| CN109389516B (en) * | 2018-11-26 | 2020-01-10 | 湖南凯迪工程科技有限公司 | Real-time intelligent soil pollution monitoring system |
| CN111693578A (en) * | 2020-06-11 | 2020-09-22 | 中国农业科学院农业信息研究所 | Crop growth information monitoring method and device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107247083B (en) | 2023-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207081691U (en) | A kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system | |
| CN107247083A (en) | A kind of heavy metals in farmland pollution on-line monitoring early warning and real time processing system and method | |
| CN114660254B (en) | Groundwater pollutant concentration prediction method | |
| CN108196021A (en) | A kind of underground water on-line monitoring, representative water sampling integration self-con-tained unit and its control method | |
| CN107328903A (en) | Shallow Groundwater Pollution thing monitoring system | |
| CN206248629U (en) | A kind of on-Line Monitor Device of refuse landfill gas | |
| CN106570591A (en) | Riverside water source water quality safety early warning method based on water quality monitoring and source analysis | |
| CN110542678A (en) | Soil environment quality monitoring method | |
| Page et al. | Online analysis: deeper insights into water quality dynamics in spring water | |
| CN105486877B (en) | Garbage category sludge gas and the integrated remote on-line monitoring system of Leachate site multi-parameter | |
| CN105260514A (en) | Strong quantitative evaluation method for underground water pollution source | |
| CN105675838B (en) | A based on data-driven2/ O flow water outlet total phosphorus intelligent detecting methods | |
| CN108746193A (en) | Heavy metals in farmland pollutes on-line early warning system | |
| CN101464226B (en) | Shallow water type water quality measurement sampler | |
| CN210322885U (en) | Quick sampling and analyzing device for soil gas in aeration zone | |
| CN204287166U (en) | A kind of water quality monitoring system based on zigbee application | |
| CN114839343A (en) | Portable water quality monitoring and inspecting instrument device and using method | |
| CN208432416U (en) | Soil repair system | |
| CN113670879B (en) | Method for analyzing black and odorous water body sediment heavy metal source based on multivariate and PMF model | |
| Wang et al. | Distribution, sources and main controlling factors of nitrate in a typical intensive agricultural region, northwestern China: Vertical profile perspectives | |
| CN104190699B (en) | Method for screening soil organic pollution remediation plant | |
| CN112729953A (en) | Underground water on-line monitoring and automatic sampling integrated device | |
| CN210071422U (en) | Underground water multilayer undisturbed monitoring system | |
| CN111141551A (en) | Non-disturbance sampler device for soil investigation | |
| CN113843267A (en) | Groundwater remediation system and remediation method for polluted site |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |