CN201233392Y - Real time on-line detection device for multi metallic elements in waste water - Google Patents
Real time on-line detection device for multi metallic elements in waste water Download PDFInfo
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- CN201233392Y CN201233392Y CNU2008201900252U CN200820190025U CN201233392Y CN 201233392 Y CN201233392 Y CN 201233392Y CN U2008201900252 U CNU2008201900252 U CN U2008201900252U CN 200820190025 U CN200820190025 U CN 200820190025U CN 201233392 Y CN201233392 Y CN 201233392Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The utility model discloses an instant on-line examination device of multiple heavy metal elements in the waste water, which relates to the water pollution monitoring. The device comprises a pulse laser (1), a focusing lens (2), an operation-control compartment (3), a buffering air (4), a specimen chamber (5), a pumping device (6), a specimen recycling container (7), a photo-receiving system (8), an optical fiber (9), a filter plate (10), a photoelectrical doubling pipe (11), a data collecting card (12) and a computer (13). The substance in the waste water is excited to be in the high-energy status with the focusing high-energy laser bunch; different substances can radiate different characteristic spectrum line during the process from the high-energy status to the basic status. The pollutant elements such as the lead, mercury, arsenic, chromium and the like in the test waste water can be ensured by analyzing the wavelength of the spectrum line, and the concentration of the elements can be obtained by analyzing the strength of the spectrum line. The device has the advantages of simple structure, rapid analysis and reliable method, and is applied to the instant online continuous detection of the industrial discharged waste water.
Description
Technical field
The utility model relates to water pollution monitoring, and the real-time online that is mainly used in waste discharge in the industry detects.
Background technology
Water is Source of life, and the relationship between quality of water this shows that to the balance of human existence and whole ecological system the harmfulness of water pollution is big.In order to prevent water pollution, effectively control the discharging of waste water and administer timely and will carry out simultaneously, and the prerequisite of pollutant emission to be to determine the composition and the content of pollutant in the control waste water.By the measurement of real-time online, can find in time whether waste discharge exceeds standard in the industrial processes, so that take measures to reduce the generation of major pollution incident.
The method of pollutant is off-line mostly in the detection waste water at present commonly used, and representational have inductively coupled plasma emission spectrography (ICP-AES) and a flame photometric analysis method.These two kinds of methods have certain precision to the detection of polluter, but must in the laboratory, finish, and before detection, need to carry out early stage and handle sample, thus strict to testing environment, test period is longer, thereby can't carry out real-time, online monitoring in industrial processes.Find as yet at present can to various heavy element in the waste water carry out the scene, in real time, the device of continuous detecting.
Summary of the invention
The purpose of this utility model is to provide the real time on-line detection device of various heavy element in the waste water.This device adopts the Laser-induced Breakdown Spectroscopy technology, utilize high energy laser that the material in the waste water is energized into high-energy state, they will give off characteristic spectrum separately when getting back to ground state, analyze the wavelength and the intensity of these spectrum, can obtain the composition and the content thereof of pollutant in the waste water.The advantage of this device is: can be simultaneously pollutant element such as lead, mercury, arsenic, chromium in the waste water and content thereof be carried out real-time, online continuous detecting, and simple in structure, easy to operate, be convenient to industry and install.
In order to achieve the above object, the present invention adopts following technical scheme:
In the waste water real time on-line detection device of various heavy element by pulsed laser, condenser lens, control between, buffer gas, sample chamber, pump arrangement, sampling returnable, receive photosystem, optical fiber, optical filter, photomultiplier, data collecting card and computing machine and form.At the coaxial arrangement condenser lens of the Laser emission direction of pulsed laser with between controlling, the sample chamber is gathered water sample in real time, by the pump arrangement pumping between controlling, laser focusing and sample effect produce plasma, its plasma signal is collected by receiving photosystem, meanwhile logical buffer gas between controlling prevents liquid sputter influence receipts light; The receiving end of receiving photosystem is placed on four sides between controlling, the output terminal of receiving photosystem is connected with the input end of optical filter by optical fiber, the output terminal of optical filter is connected to the input end of photomultiplier, the output terminal of photomultiplier is connected to the input end of data collecting card, and the output terminal of data collecting card is connected to computing machine.
The real time on-line detection device of various heavy element adopts Laser-induced Breakdown Spectroscopy (LIBS) technology in the waste water, utilize the high energy laser beam that focuses on that the material in the tested waste water is energized into high-energy state, they will give off characteristic spectrum separately in getting back to the process of ground state, analyze the wavelength and the intensity of these spectrum, can obtain the composition and the content thereof of pollutant in the tested waste water.Definite the atomic spectrum standard and the technical data library of element spectral line with reference to American National Standard and Institute for Research and Technology (NIST).In the laboratory waste water of returning from collection in worksite is carried out a large amount of experiments of measuring, the characteristic spectral line of getting the pollutant element is as follows: magnesium-279.6 nanometer, iron-404.6 nanometer, copper-324.8 nanometer, aluminium-309.3 lead-405.8 nanometer, mercury-253.7 nanometer, arsenic-228.8 nanometer, chromium-520.8 nanometer.Utilize the LIBS technology, can real-time online ground analytical industry production run in the result of contaminated wastewater thing discharging, these results can be used as the discharging standard compliant foundation whether of judging the contaminated wastewater thing.
Compared with prior art, the utlity model has following advantage:
1, can determine pollutant element and content thereof such as lead, mercury, arsenic, chromium in the waste water simultaneously;
2, can carry out real-time, online continuous detecting to pollutants such as the lead in the waste water, mercury, arsenic, chromium;
3, do not need that before detection testing sample is carried out early stage and handle, can obtain analysis result rapidly and accurately;
4, receive photosystem and form, can improve the Device Testing limit by four light receiving devices;
5, simple in structure, easy to operate, be convenient to industry and install.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view that the utility model is received photosystem.
Fig. 3 and Fig. 4 are respectively " intensity-concentration " curve map with lead element 405.8 nanometers and arsenic element 228.8 nanofeature spectral lines in the detected waste water of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, in the waste water real time on-line detection device of various heavy element by pulsed laser 1, condenser lens 2, control between 3, buffer gas 4, sample chamber 5, pump arrangement 6, sample returnable 7, receive photosystem 8, optical fiber 9, optical filter 10, photomultiplier 11, data collecting card 12 and computing machine 13 and form.Between the Laser emission direction of pulsed laser 1 coaxial arrangement condenser lens 2 of order and hexahedral controlling 3,3 sampling spot place between the focus of condenser lens 2 is positioned at and controls overlaps with the focus of light receiving device condenser lens.3 upper and lower surface respectively has a circular hole between controlling, and last hole connects pump arrangement 6, and pump arrangement 6 connects sample chamber 5 again.The waste water water sample that gather sample chamber 5, by pump arrangement 6 pumpings between controlling 3.3 following hole connects sample returnable 7 between controlling.Receive photosystem 8 and form four sides of 3 between four light receiving devices are installed in respectively and control by four light receiving devices that connect fiber coupler respectively.Fiber coupler is connected to the input end of photomultiplier 11 through optical fiber 9 and optical filter 10, and the output terminal of photomultiplier 11 connects the input end of data collecting card 12, and the output terminal of data collecting card 12 is connected to computing machine 13.
The output wavelength of above-mentioned pulsed laser 1 is 1064 nanometers, and range of laser energy is that 100～500 millis are burnt.
Above-mentioned buffer gas 4 adopts the gas of not soluble in water, difficult and water generation chemical reaction, as nitrogen, helium or neon etc.
The course of work that the utility model detects the contaminated wastewater thing is: after opening the real time on-line detection device of various heavy element in the waste water, sample chamber 5 begins to gather wastewater sample, through pump arrangement 6 enter continuously control between 3, meanwhile focus on the waste water behind the pulse laser line focus lens 2 that pulsed laser 1 sends, the high energy laser beam that waste water is focused punctures the formation high-temperature plasma, various materials in the waste water will be excited to high-energy state, between a last pulse laser and next pulse laser, the various materials of high-energy state will be got back to ground state, in this process, various materials can give off characteristic spectrum separately, these characteristic spectrums are through receiving photosystem 8, be transmitted to optical filter 10 through optical fiber 9 again, optical filter 10 article on plasma body signals filter, import photomultiplier 11 again into, photomultiplier 11 converts the light signal that collects to electric signal, and data collecting card 12 changes into digital signal with simulating signal and imports computing machine 13 analyzing and processing.Computing machine 13 will obtain the Laser-induced Breakdown Spectroscopy of wastewater sample, and according to the wavelength of gained atomic emission spectrum characteristic light spectral line, the composition of its sample internal contamination thing of analysis and judgement is calculated the content of this material again according to the intensitometer of each characteristic spectral line.
Fig. 2 is the vertical view that the utility model is received photosystem.Receive photosystem and be installed on four sides between controlling, and a light receiving device is installed on each face, the focal length of light receiving device condenser lens is 40 millimeters, and diameter is 30 millimeters.
The theoretical foundation of emission spectrum quantitative test is free calibration model, its fundamental formular be Roman gold-Sai Bai (formula of Lomakin-Scheibe):
I＝aC
b
I is line strength in the formula, and a is a constant, belongs to systematic error, and is relevant with hardware system parameter and environmental factor etc., and b is called self absorption factor, and is relevant with the content of element, and C is the concentration of element.Following formula is taken the logarithm, then:
1gI＝b1gC+1ga
Following formula shows, under the stable situation of experiment condition, the logarithm 1gC of constituent content is linear in line strength logarithm 1gI and the plasma.Therefore, when concentration of element C is known, measure line strength I, just can obtain constant a.After constant a determines,, just can obtain the content of the element of surveying, the ultimate principle of emission spectrum quantitative test that Here it is by measuring line strength I.
Fig. 3 is with 405.8 nanofeature spectral line " intensity-concentration " curve maps of lead element in the detected waste water of the utility model.Wherein, horizontal ordinate is the logarithm 1gC of constituent content, and ordinate is the logarithm 1gI of line strength, the linearity 0.99, and slope 0.41, promptly self absorption factor is 0.41.Fig. 4 is arsenic element 228.8 nanofeature spectral line " intensity-concentration " curve maps in the waste water.
Claims (4)
1, the real time on-line detection device of various heavy element in the waste water, it is characterized in that, this device by pulsed laser (1), condenser lens (2), control between (3), buffer gas (4), sample chamber (5), pump arrangement (6), sample returnable (7), receive photosystem (8), optical fiber (9), optical filter (10), photomultiplier (11), data collecting card (12) and computing machine (13) and form; Between the Laser emission direction of pulsed laser (1) order coaxial arrangement condenser lens (2) and hexahedral controlling (3), the sampling spot place of (3) between the focus of condenser lens (2) is positioned at and controls overlaps with the focus of light receiving device condenser lens; (3) upper and lower surface respectively has a circular hole between controlling, and last hole connects pump arrangement (6), and pump arrangement (6) connects sample chamber (5) again, and the following hole of (3) connects sample returnable (7) between controlling; Receiving photosystem (8) is made up of four light receiving devices that connect fiber coupler respectively, four sides of (3) between four light receiving devices are installed in respectively and control, fiber coupler is connected to the input end of photomultiplier (11) through optical fiber (9) and optical filter (10), the output terminal of photomultiplier (11) connects the input end of data collecting card (12), and the output terminal of data collecting card (12) is connected to computing machine (13).
2, the real time on-line detection device of various heavy element in the waste water according to claim 1 is characterized in that, the output wavelength of described pulsed laser (1) is 1064 nanometers, and laser energy is that 100～500 millis are burnt.
3, the real time on-line detection device of various heavy element in the waste water according to claim 1 is characterized in that, that described buffer gas (4) adopts is not soluble in water, be difficult for and the gas of water generation chemical reaction.
4, the real time on-line detection device of various heavy element in the waste water according to claim 3 is characterized in that, described buffer gas (4) adopts nitrogen or helium or neon.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008201900252U CN201233392Y (en) | 2008-07-31 | 2008-07-31 | Real time on-line detection device for multi metallic elements in waste water |
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| CNU2008201900252U CN201233392Y (en) | 2008-07-31 | 2008-07-31 | Real time on-line detection device for multi metallic elements in waste water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865905A (en) * | 2010-05-19 | 2010-10-20 | 重庆大学 | Mercury concentration on-line detection method in smoke gas |
| CN101782523B (en) * | 2010-03-03 | 2012-06-27 | 宇星科技发展(深圳)有限公司 | Method for online detecting arsenic content in water by using dithioantipyrine methane as color developing agent |
| CN105300888A (en) * | 2015-10-27 | 2016-02-03 | 吉永强 | Online measuring device and method |
| CN105806768A (en) * | 2016-04-28 | 2016-07-27 | 绍兴文理学院 | Sewage laser test table |
| CN109085151A (en) * | 2018-09-11 | 2018-12-25 | 南京信息工程大学 | The on-line measuring device and detection method of a kind of atmosphere pollution mercury and its isotope |
| CN111999280A (en) * | 2020-08-18 | 2020-11-27 | 呼和浩特市环境科学研究所 | Need not surface water heavy metal real-time detection system of sample |
-
2008
- 2008-07-31 CN CNU2008201900252U patent/CN201233392Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782523B (en) * | 2010-03-03 | 2012-06-27 | 宇星科技发展(深圳)有限公司 | Method for online detecting arsenic content in water by using dithioantipyrine methane as color developing agent |
| CN101865905A (en) * | 2010-05-19 | 2010-10-20 | 重庆大学 | Mercury concentration on-line detection method in smoke gas |
| CN101865905B (en) * | 2010-05-19 | 2013-02-20 | 重庆大学 | Mercury concentration on-line detection method in smoke gas |
| CN105300888A (en) * | 2015-10-27 | 2016-02-03 | 吉永强 | Online measuring device and method |
| CN105300888B (en) * | 2015-10-27 | 2018-08-28 | 吉永强 | A kind of on-line measurement device and its measurement method |
| CN105806768A (en) * | 2016-04-28 | 2016-07-27 | 绍兴文理学院 | Sewage laser test table |
| CN109085151A (en) * | 2018-09-11 | 2018-12-25 | 南京信息工程大学 | The on-line measuring device and detection method of a kind of atmosphere pollution mercury and its isotope |
| CN111999280A (en) * | 2020-08-18 | 2020-11-27 | 呼和浩特市环境科学研究所 | Need not surface water heavy metal real-time detection system of sample |
| CN111999280B (en) * | 2020-08-18 | 2024-02-09 | 呼和浩特市环境科学研究所 | Real-time detection system for heavy metals in surface water without sampling |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20110731 |