[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN106226257A - COD on-Line Monitor Device and monitoring method thereof in a kind of water - Google Patents

COD on-Line Monitor Device and monitoring method thereof in a kind of water Download PDF

Info

Publication number
CN106226257A
CN106226257A CN201610544995.7A CN201610544995A CN106226257A CN 106226257 A CN106226257 A CN 106226257A CN 201610544995 A CN201610544995 A CN 201610544995A CN 106226257 A CN106226257 A CN 106226257A
Authority
CN
China
Prior art keywords
module
cod
water
measured
water sample
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.)
Pending
Application number
CN201610544995.7A
Other languages
Chinese (zh)
Inventor
许涛
周磊
刘建龙
唐怀武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU ZETIAN TECHNOLOGY Co Ltd
Original Assignee
HANGZHOU ZETIAN TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HANGZHOU ZETIAN TECHNOLOGY Co Ltd filed Critical HANGZHOU ZETIAN TECHNOLOGY Co Ltd
Priority to CN201610544995.7A priority Critical patent/CN106226257A/en
Publication of CN106226257A publication Critical patent/CN106226257A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/33Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314Investigating 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
    • G01N2021/3155Measuring in two spectral ranges, e.g. UV and visible

Landscapes

  • 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

The present invention relates to COD on-Line Monitor Device in a kind of water, including gauge outfit and probe two parts, wherein gauge outfit includes display module, data processing module and control module;Wherein probe segment includes: light source module, lens, flow cell module, spectrometer module, described light source module, lens, flow cell module, spectrometer module are by order arrangement the most successively, probe is immersed in water sample to be measured by this device, by the xenon source full spectral measurement to water sample to be measured in probe, utilize grating, spectrogrph, detector etc., optical signal is changed into the signal of telecommunication, calculates the concentration of COD in water sample to be measured finally according to the water quality model built up.Reliability of the present invention is high, the suitability strong, low cost, pollution-free.

Description

COD on-Line Monitor Device and monitoring method thereof in a kind of water
Technical field
The present invention is applied to the monitoring fields such as surface water, subsoil water, waste water, and the lowest COD high-chloride wastewater is monitored, and relates to COD on-Line Monitor Device and monitoring method thereof in a kind of water.
Background technology
COD, as the index of measurement water body organism relative amount, is one of important indicator evaluating degree of water pollution, Therefore it is a big event of water quality monitoring.Current most of COD on-line monitoring instrument is to use potassium dichromate as oxidation Agent, aoxidizes water sample under certain condition, is calculated the amount of the oxidant of consumption by photometer, is converted into the value of COD further. Owing in water sample, partial organic substances is difficult to by potassium dichromate oxidation, and there is chloride ion interference in potassium dichromate method, when chlorine from When sub-concentration is more than 1000mg/L, need to shelter to resist certain density chloride ion by dilution and addition Mercury bisulfate..Work as chlorine When ion concentration is more than 10000mg/L, the accuracy of potassium dichromate method is the most unreliable.Therefore, traditional potassium dichromate method Poor for applicability in the monitoring of high-chloride wastewater, highly basic sewage and surface water.From the point of view of in terms of on the affecting of environment, there is chromium, hydrargyrum Secondary pollution;From safeguarding, reagent expense and maintenance workload are big.
There is the problems such as poor for applicability, cost is high, poor reliability in method in sum.
Summary of the invention
The invention provides on-line monitoring COD device and monitoring method thereof in a kind of water, probe immersed in water sample to be measured, By the xenon source full spectral measurement to water sample to be measured in probe, utilize grating, spectrogrph, detector etc., optical signal is turned The chemical conversion signal of telecommunication, calculates the concentration of COD in water sample to be measured finally according to the water quality model built up.
The present invention is achieved by the following technical solutions: COD on-Line Monitor Device in a kind of water, including gauge outfit and probe Two parts, wherein table header is divided and is included:
Display module, for showing the COD concentration value of water body to be detected to user;
Data processing module, calculates the concentration of COD in water sample to be measured according to the water quality model built up:
Control module, is used for controlling described data processing module, described display module completes to work accordingly;
Wherein probe segment includes:
Light source module, i.e. xenon source, function is that xenon source sends ultraviolet-visible light under specific high pressure;
Lens;
Flow cell module, the region that water sample to be measured flows through;
Spectrometer module, including grating, detector, on the light of grating beam splitting and reflection 200-800nm wave band to detector, Then the signal of telecommunication is converted optical signals to by cable transmission in gauge outfit;
Described light source module, lens, flow cell module, spectrometer module are by order arrangement the most successively;
Described grating is arranged on spectrometer module by regulation screw, and described detector is arranged on described spectrometer module Lower half, front end.
Further, the bottom of described flow cell arranges blow valve port, for automatically cleaning lens.At measurement interval phase instrument Can automatically clean lens, to prevent foul to be deposited on lens surface, affect the accuracy of monitoring device.
A kind of use the monitoring method of COD on-Line Monitor Device in above-mentioned water, including:
Step one, immerses water sample to be measured by probe, sends ultraviolet-visible light by specific high voltage startup xenon source;
Step 2, this light beam is through the flow cell being full of water sample to be measured;
Step 3, light beam enters spectrometer module, beats after grating beam splitting on array detector;
Step 4, the optical signal being loaded with water sample to be measured absorption information is changed into the signal of telecommunication and sends into data by array detector Processing unit;
Step 5, data processing unit is quantitative with COD according to using weighting multi-wavelength absorbance detection method to set up absorbance The water quality model of algorithm, by the change of energy COD concentration value during i.e. absorbance size calculates water sample to be measured;
Further, step one, described xenon source is full spectral measurement to water sample to be measured, between 200nm to 800nm Wavelength.According to the absorbance of other specific wavelength points in full spectrum and the mathematical model of tie substance, can monitor BOD, SS and Other water quality index such as colourity.
Further, beat modulating voltage and number of times by regulation xenon source, and the angles and positions of regulation grating, use Can normally monitor along with the change of water sample operating mode to be measured in meeting monitoring device.
Further, the distance scalable between described spectrometer module and light source, for the monitoring of machine with wide range COD Demand.
This invention takes above-mentioned corrective measure to carry out, its beneficial effect is notable: probe is immersed water sample to be measured by the present invention In, by the xenon source full spectral measurement to water sample to be measured in probe, utilize grating, spectrogrph, photoelectric sensor etc., by light Signal changes into the signal of telecommunication, finally uses weighting multi-wavelength absorbance detection method to set up the water quality model that absorbance is quantitative with COD, By the change size of energy concentration value of COD during i.e. absorbance calculates water sample, reliability of the present invention is high, the suitability is strong, become This is low, pollution-free, is particularly well-suited to the monitoring of low COD high-chloride wastewater
Accompanying drawing explanation
Fig. 1 is the structural representation of probe segment of the present invention;
Fig. 2 is the structural representation of spectrometer module of the present invention;
In figure, 1 is light source module, and 2 is lens, and 3 is flow cell module, and 4 is blow valve port, and 5 is spectrometer module, and 6 is light Grid, 7 is regulation screw, and 8 is detector.
Detailed description of the invention
Below against accompanying drawing, the present invention is further illustrated in conjunction with the embodiments:
With reference to shown in Fig. 1-Fig. 2, COD on-Line Monitor Device in a kind of water, including gauge outfit and probe two parts, gauge outfit is the most aobvious Showing, process signal of telecommunication part, probe i.e. puts into measurement change in optical signal part in water sample to be measured, and wherein table header is divided and included:
Display module, for showing the COD concentration value of water body to be detected to user;
Data processing module, calculates the concentration of COD in water sample to be measured according to the water quality model built up:
Control module, is used for controlling described data processing module, described display module completes to work accordingly;
Wherein probe segment includes:
Light source module, i.e. xenon source, function is that xenon source sends ultraviolet-visible light under specific high pressure;
Lens;
Flow cell module, the region that water sample to be measured flows through;
Spectrometer module, including grating, detector, on the light of grating beam splitting and reflection 200-800nm wave band to detector, Then the signal of telecommunication is converted optical signals to by cable transmission in gauge outfit;
Described light source module, lens, flow cell module, spectrometer module are by order arrangement the most successively;
Described grating is arranged on spectrometer module by regulation screw, and described detector is arranged on described spectrometer module Lower half, front end.Grating angle adjustable, makes light beam to be received by detector to greatest extent.
The monitoring method utilizing above-mentioned monitoring device includes:
Step one, immerses water sample to be measured by probe, sends ultraviolet-visible light by specific high voltage startup xenon source, Spectral measurement complete to water sample to be measured, described full spectral measurement, for the wavelength between 200nm to 800nm;
Step 2, the above-mentioned light beam sent is through the flow cell being full of water sample to be measured;
Step 3, light beam enters spectrometer module, beats after grating beam splitting on array detector;
Step 4, the optical signal being loaded with water sample to be measured absorption information is changed into the signal of telecommunication and sends into data by array detector Processing unit;
Step 5, data processing unit is quantitative with COD according to using weighting multi-wavelength absorbance detection method to set up absorbance The water quality model of algorithm, by the change of energy COD concentration value during i.e. absorbance size calculates water sample to be measured.Weighting multi-wavelength Detection method, i.e. monitors 5 organic absorption spectrums having the type of representative between 243nm-290nm, selects and the phase relation of COD The weight coefficient of the optimal each wavelength of number, then by maximum weight coefficient combination, founding mathematical models.
The present invention can beat modulating voltage and number of times by regulation xenon source, and the angles and positions of regulation grating, use Can normally monitor along with the change of water sample operating mode to be measured in meeting monitoring device.
The present invention can realize the monitoring of machine with wide range COD by regulating the distance between spectrometer module and light source to be needed Ask.
According to the absorbance of other specific wavelength points in full spectrum and the mathematical model of tie substance, can monitor BOD, SS and Other water quality index such as colourity.
Light source module in present invention probe sends ultraviolet-visible light by specific high voltage startup xenon source, passes through Being full of the flow cell of water sample to be measured, light beam enters spectrometer module subsequently, beats after grating beam splitting on array detector, should Array detector absorbs the data process mould that the optical signal of information changes in signal of telecommunication send being loaded with water sample to be measured into gauge outfit Block, according to the water quality model using weighting multi-wavelength absorbance detection method to set up absorbance and COD Quantitative algorithm, by energy Change COD concentration value during i.e. absorbance size calculates water sample to be measured.
The listed above specific embodiment being only the present invention, it is clear that the invention is not restricted to above example, this area All deformation that those of ordinary skill can directly derive from present disclosure or associate, all should belong to the guarantor of the present invention Protect scope.

Claims (7)

1. a COD on-Line Monitor Device in water, including gauge outfit and probe two parts, it is characterised in that wherein table header subpackage Include:
Display module, for showing the COD concentration value of water body to be detected to user;
Data processing module, calculates the concentration of COD in water sample to be measured according to the water quality model built up:
Control module, is used for controlling described data processing module, described display module completes to work accordingly;
Wherein probe segment includes:
Light source module, i.e. xenon source, function is that xenon source sends ultraviolet-visible light under specific high pressure;
Lens;
Flow cell module, the region that water sample to be measured flows through;
Spectrometer module, including grating, detector, on the light of grating beam splitting and reflection 200-800nm wave band to detector, then Convert optical signals to the signal of telecommunication by cable transmission in gauge outfit;
Described light source module, lens, flow cell module, spectrometer module are by order arrangement the most successively;
Described grating is arranged on spectrometer module, before described detector is arranged on described spectrometer module by regulation screw End lower half.
COD on-Line Monitor Device in a kind of water the most according to claim 1, it is characterised in that the bottom of described flow cell Blow valve port is set, for automatically cleaning lens.
3. the monitoring method of COD on-Line Monitor Device in the water using described in claim 1 or 2, it is characterised in that bag Include:
Step one, immerses water sample to be measured by probe, sends ultraviolet-visible light by specific high voltage startup xenon source;
Step 2, this light beam is through the flow cell being full of water sample to be measured;
Step 3, light beam enters spectrometer module, beats after grating beam splitting on array detector;
Step 4, the optical signal being loaded with water sample to be measured absorption information is changed into the signal of telecommunication and sends into data process by array detector Unit;
Step 5, data processing unit sets up absorbance and COD Quantitative algorithm according to employing weighting multi-wavelength absorbance detection method Water quality model, by the change of energy COD concentration value during i.e. absorbance size calculates water sample to be measured.
The monitoring method of COD on-Line Monitor Device in a kind of water the most according to claim 3, it is characterised in that step one, Described xenon source is full spectral measurement to water sample to be measured.
The monitoring method of COD on-Line Monitor Device in a kind of water the most according to claim 4, it is characterised in that described Full spectral measurement, for the wavelength between 200nm to 800nm.
The monitoring method of COD on-Line Monitor Device in a kind of water the most according to claim 3, it is characterised in that by adjusting That saves xenon source beats modulating voltage and number of times, and the angles and positions of regulation grating, is used for meeting monitoring device along with to be measured The change of water sample operating mode can normally be monitored.
The monitoring method of COD on-Line Monitor Device in water the most according to claim 3, it is characterised in that described spectrogrph Distance scalable between module and light source, for the monitoring requirements of machine with wide range COD.
CN201610544995.7A 2016-07-13 2016-07-13 COD on-Line Monitor Device and monitoring method thereof in a kind of water Pending CN106226257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610544995.7A CN106226257A (en) 2016-07-13 2016-07-13 COD on-Line Monitor Device and monitoring method thereof in a kind of water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610544995.7A CN106226257A (en) 2016-07-13 2016-07-13 COD on-Line Monitor Device and monitoring method thereof in a kind of water

Publications (1)

Publication Number Publication Date
CN106226257A true CN106226257A (en) 2016-12-14

Family

ID=57519790

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610544995.7A Pending CN106226257A (en) 2016-07-13 2016-07-13 COD on-Line Monitor Device and monitoring method thereof in a kind of water

Country Status (1)

Country Link
CN (1) CN106226257A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106596460A (en) * 2016-12-22 2017-04-26 江苏国泰环境监测有限公司常熟分公司 Infrared spectroscopy oil measuring device
CN108872144A (en) * 2018-09-13 2018-11-23 中国农业大学 A kind of on-Line Monitor Device for anaerobic digestion process
CN108996676A (en) * 2018-09-18 2018-12-14 许东俊 A kind of sewage aeration processing unit
CN109142247A (en) * 2018-08-20 2019-01-04 山东润智能科技有限公司 COD monitors system in spectrochemistry oxygen demand sensor and medical waste water
CN110082302A (en) * 2019-05-28 2019-08-02 艾西姆(辽宁)环境技术有限公司 A kind of landfill leachate biochemical tail water COD on-line monitoring method
CN111060453A (en) * 2019-12-23 2020-04-24 江西省水投江河信息技术有限公司 Multi-parameter water body monitoring device and method
CN113984671A (en) * 2021-09-27 2022-01-28 苏州雷博亚仪器有限公司 Multi-index detector and method for online or real-time detection of water quality
CN114184549A (en) * 2021-12-10 2022-03-15 西湖大学 Aquatic TOC and COD quick detection device based on AI degree of depth study
CN114577742A (en) * 2022-03-04 2022-06-03 武汉理工大学 Method and device for detecting pollutants in water
CN114814071A (en) * 2022-06-17 2022-07-29 武汉正元环境科技股份有限公司 Water quality detection method based on ion chromatography

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102661923A (en) * 2012-05-03 2012-09-12 四川碧朗科技有限公司 Complex monitor for automatically monitoring multiple parameters of water on line
CN105259129A (en) * 2015-11-12 2016-01-20 浙江微兰环境科技有限公司 Probe type water quality multi-parameter online monitor and monitoring method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102661923A (en) * 2012-05-03 2012-09-12 四川碧朗科技有限公司 Complex monitor for automatically monitoring multiple parameters of water on line
CN105259129A (en) * 2015-11-12 2016-01-20 浙江微兰环境科技有限公司 Probe type water quality multi-parameter online monitor and monitoring method thereof

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106596460A (en) * 2016-12-22 2017-04-26 江苏国泰环境监测有限公司常熟分公司 Infrared spectroscopy oil measuring device
CN109142247A (en) * 2018-08-20 2019-01-04 山东润智能科技有限公司 COD monitors system in spectrochemistry oxygen demand sensor and medical waste water
CN108872144A (en) * 2018-09-13 2018-11-23 中国农业大学 A kind of on-Line Monitor Device for anaerobic digestion process
CN108872144B (en) * 2018-09-13 2021-02-12 中国农业大学 A on-line monitoring device for anaerobic digestion process
CN108996676A (en) * 2018-09-18 2018-12-14 许东俊 A kind of sewage aeration processing unit
CN110082302A (en) * 2019-05-28 2019-08-02 艾西姆(辽宁)环境技术有限公司 A kind of landfill leachate biochemical tail water COD on-line monitoring method
CN111060453A (en) * 2019-12-23 2020-04-24 江西省水投江河信息技术有限公司 Multi-parameter water body monitoring device and method
CN113984671A (en) * 2021-09-27 2022-01-28 苏州雷博亚仪器有限公司 Multi-index detector and method for online or real-time detection of water quality
CN114184549A (en) * 2021-12-10 2022-03-15 西湖大学 Aquatic TOC and COD quick detection device based on AI degree of depth study
CN114577742A (en) * 2022-03-04 2022-06-03 武汉理工大学 Method and device for detecting pollutants in water
CN114577742B (en) * 2022-03-04 2024-09-03 武汉理工大学 Method and device for detecting pollutants in water
CN114814071A (en) * 2022-06-17 2022-07-29 武汉正元环境科技股份有限公司 Water quality detection method based on ion chromatography

Similar Documents

Publication Publication Date Title
CN106226257A (en) COD on-Line Monitor Device and monitoring method thereof in a kind of water
CN104034684B (en) A kind of water quality multi-index detection method based on uv-visible absorption spectra
Hu et al. Novel method of turbidity compensation for chemical oxygen demand measurements by using UV–vis spectrometry
CN102661923A (en) Complex monitor for automatically monitoring multiple parameters of water on line
Wang et al. High precision wide range online chemical oxygen demand measurement method based on ultraviolet absorption spectroscopy and full-spectrum data analysis
CN113049512B (en) Water quality on-line monitoring method based on full-wavelength ultraviolet-visible absorption spectrum
CN109959634A (en) A kind of water quality monitoring system and method
US10788416B2 (en) Multiple wavelength light source for colorimetric measurement
Li et al. Global calibration model of UV-Vis spectroscopy for COD estimation in the effluent of rural sewage treatment facilities
US7671994B2 (en) Method for measuring chemical levels using pH shift
CN100408998C (en) COD on-line detecting method and instrument
US7639361B2 (en) Apparatus for measuring chemical levels using pH shift
US3635564A (en) System for measuring organic content of water
CN101793820B (en) On-line monitoring method for double module linkage water quality
CN208125620U (en) A kind of water quality on-line monitoring device based on wide spectrum multi-parameter
CN113065095B (en) Ultraviolet spectrum-based detection algorithm for nitrogen content in water
CN116297280B (en) UCOD coefficient detection method and sensor for organic matters in water based on array spectrum
Youquan et al. A novel monitoring system for COD using optical ultraviolet absorption method
CN113310893B (en) Optical path-variable multi-parameter water quality monitoring device and method based on spectroscopy
Wang et al. Study on Real-Time Monitoring of Seawater COD by UV-Vis Spectroscopy
CN106596433A (en) Water quality detection system provided with heating system
CN206540820U (en) A kind of chromium method UVCOD all-in-one on-line computing models
Liu et al. A review on optical measurement method of chemical oxygen demand in water bodies
CN113406040A (en) Novel method and device for measuring turbidity and total organic carbon on line at high precision
JPS63218842A (en) Method and apparatus for measuring concentration of ozone

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20161214