CN102866136A - Probe type on-line monitoring system and probe type on-line monitoring method for water petroleum pollutants - Google Patents
Probe type on-line monitoring system and probe type on-line monitoring method for water petroleum pollutants Download PDFInfo
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- CN102866136A CN102866136A CN201210281345XA CN201210281345A CN102866136A CN 102866136 A CN102866136 A CN 102866136A CN 201210281345X A CN201210281345X A CN 201210281345XA CN 201210281345 A CN201210281345 A CN 201210281345A CN 102866136 A CN102866136 A CN 102866136A
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Abstract
The invention relates to a probe type on-line monitoring system and a probe type on-line monitoring method for water petroleum pollutants. The system comprises an excitation light source, a detector and a control circuit board, wherein the excitation light source is used for emitting ultraviolet light which is emitted to the surface of water to be monitored at a certain angle; a light input end of the detector is provided with a light filter which is used for receiving fluorescent light reflected from the surface of the water to be monitored; and the control circuit board is connected with the detector and a control end of the excitation light source, is used for acquiring fluorescent light signals and temperature and calculating the concentration of the petroleum pollutants in the water, and is connected to an upper computer through a transmitting cable. The method comprises the following steps of: acquiring the fluorescence intensity of the surface of the water to be monitored through the excitation light source and the detector; and determining the concentration of the petroleum pollutants in the water to be detected according to the linear relation between the fluorescence intensity and the concentration of the petroleum pollutants in the water. A low-power-consumption ultraviolet light emitting diode (LED) is used as the excitation light source, the concentration is measured by the fluorescent characteristic of the petroleum pollutants, sensitivity and measurement speed are high, the steps are simple, and the system and the method can be used for monitoring petroleum pollutants in various water areas in an on-line manner.
Description
Technical field
The present invention relates to water body oils monitoring field, be specially a kind of sonde-type petroleum polluting water body thing on-line monitoring system and method.
Background technology
Entered since 21 century, be accompanied by the high speed development of national economy, the rivers of China, lake and marine environment water quality also have been subjected to serious broken ring.Its PetroChina Company Limited. and products thereof enters water body environment in exploitation, refining, storing and use procedure, thereby the petroleum-type that has formed the China coastal seas marine site is polluted.The oil product Movement routes has: the refinery oily waste water is through the river or directly inject the ocean; The oil carrier leakage of oil, discharge or have an accident, make oil product directly into the sea; Spill and leakage and the blowout of submarine oil field in recovery process makes oil enter ocean water body; The local natural oil spilling of ocean bottom.
Therefore, all kinds of waters petroleum class pollutant is effectively monitored and managed, especially develop the real-time dynamic monitoring technology and have great social effect and economic worth.
Carry out water body oils measurement method commonly used nephelometry, ultrasonic method, light scattering method, gravimetric method, NDIR (Non-Dispersive Infrared) absorption process, infrared spectrophotometer, chromatography, ultraviolet absorption method, fluorimetry, ultraviolet fluorescence method are arranged.Wherein nephelometry, ultrasonic method, light scattering method only work to the dispersed oil in the water body, because they can't detect the low concentration petroleum hydrocarbon that is dissolved in the water.Gravimetric method sensitivity is not high, and can cause the loss of low boiling alkane.The NDIR (Non-Dispersive Infrared) absorption process is because mineral oil composition (containing respectively C-H stretching vibration in 2930cm-1(=CH2 in alkane, naphthenic hydrocarbon and the aromatic hydrocarbon), C-H stretching vibration among the 2960cm-1(CH2), C-H stretching vibration in the 3030cm-1(aromatic rings) locates the different component of absorption band, if the relative value of these components changes, obviously be difficult to survey accurate with the NDIR (Non-Dispersive Infrared) absorption process of only measuring at a certain wave number place.Infrared spectrophotometer is owing to the absorbance that can measure simultaneously or sequentially above-mentioned three wave number places (is A2930, A2960, A3030), and disturb little at these three wave number places, the total concentration of mineral oil can be tried to achieve at an easy rate by suitable calculating, thereby above-mentioned most of shortcoming can be avoided.Chromatography can be measured a plurality of components, but time-consuming, bothersome.Compare with said method, ultraviolet fluorescence method is real-time online measuring easily, and tested water body need not done any processing, and is easy and simple to handle, fast, has a extensive future, and becomes the focus of research.The molecule of fluorescent material can have several different absorption peak bands in the extinction process, different fluorescent materials is because the difference of molecular structure and energy distribution, demonstrate separately different Absorption and fluorescence spectrum characteristics, this has just determined that Fluorescence Method has very high selectivity and sensitivity.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the present invention is to provide a kind of fluorescent technique based on ultraviolet LED, the complicated step such as do not need to extract, measure fast, low in energy consumption, can realize to water body PetroChina Company Limited. pollutant long-term, in real time, sonde-type petroleum polluting water body thing on-line monitoring system and the method for on-line measurement.
The technical scheme that the present invention adopts for achieving the above object is: a kind of sonde-type petroleum polluting water body thing on-line monitoring system comprises
Excitation source is used for emitting ultraviolet light, shines at a certain angle water surface to be measured;
Detector, the input end of light is equipped with optical filter, is used for receiving the fluorescence that water surface to be measured reflects;
Control circuit board, the control end of connection detector and excitation source is used for fluorescence signal collection, temperature acquisition, the pollutant levels calculating of water body PetroChina Company Limited., is connected to host computer by transmission cable.
Described excitation source, detector, control circuit board are fixed in the cavity, and the below of cavity is the flow cell that water body to be measured is housed.
Described water body to be measured top is fixed with the quartzy window of exclusion of water steam.
Described excitation source is ultraviolet LED, and centre wavelength is 365nm.
It is the bandpass filter of 420-600nm that described optical filter adopts centre wavelength.
Described detector is photodiode.
Described control circuit board is that model is the single-chip microcomputer of MSP43f149, comprising:
The control module module connects transmitter unit module and data processing module, is used for the control to transmitter unit module and data processing module;
The transmitter unit module, input end connection control unit module, output terminal connects excitation source, is used for the work of control excitation source;
Data processing module receives the electric signal from the reflection fluorescence intensity of detector transmission, gets the concentration of water-outlet body PetroChina Company Limited. pollutant according to the corresponding relation of fluorescence intensity and water body PetroChina Company Limited. pollutant levels, and connects host computer by transmission cable.
Described control circuit board also connects temperature sensor, adopts the temp probe of thermistor, closely abuts on the cavity.
A kind of sonde-type petroleum polluting water body thing on-line monitoring method may further comprise the steps:
Obtain the fluorescence intensity of water surface to be measured by excitation source and detector;
According to the linear relationship between the concentration of fluorescence intensity and water body PetroChina Company Limited. pollutant, obtain the concentration of water body to be measured PetroChina Company Limited. pollutant.
The concentration of described water body to be measured PetroChina Company Limited. pollutant is transferred in the host computer.
The present invention specifically has following beneficial effect:
1. whole observation process such as need not extract at the complicated means, and is with safeguarding, simple and practical hardly, is applicable to long-term unattended surveillance;
2. whole equipment seals with cavity, has good capability of electromagnetic shielding, strong interference immunity, and reliability is high, can satisfy the applications of electromagnetic environment complexity;
3. apparatus of the present invention have temperature detecting unit and are installed on the cavity, can Real-time Obtaining scene temperature data, and the temperature at control survey scene;
4. the transmitter unit of apparatus of the present invention and receiving element are the integrated design, and by quartzy window sealing, can prevent effectively that water vapour from entering into detector;
5. the present invention adopts the high brightness ultraviolet light-emitting diode as light source, adopts the sealing of high strength cavity, compact conformation, withstand voltage, and anti-interference is good, both can immersion measurement, add and join flow cell and can realize that again flow type measures.
6. the present invention both can handheld operation, and the field observation measurement result also can be passed through remote communication interface, realized the unmanned monitoring of long-term, fixed point, automatic data collection and transmission.The present invention can be widely used in the environmental monitoring in the zone such as seawater, lake water, refinery, and is with low cost, production technology is simple, has widely market application foreground.
Description of drawings
Fig. 1 is the general structure schematic diagram of system of the present invention;
Fig. 2 is the module diagram of control circuit board of the present invention;
Fig. 3 is the embodiment physical construction schematic diagram of system of the present invention;
Fig. 4 is the embodiment schematic diagram of the integrated design structure of optoelectronic components of the present invention;
Fig. 5 is the embodiment schematical top view of optoelectronic components of the present invention;
Fig. 6 is embodiment of the invention oil pollution substrate concentration---fluorescence intensity measurement curve.
Wherein 1 is that cavity, 2 is that excitation source, 3 is that quartzy window, 4 is that flow cell, 5 is that optical filter, 6 is that detector, 7 is that control circuit board, 8 is that temperature sensor, 9 is that transmission cable, 10 is that cable interface, 11 is that water inlet, 12 is that water delivering orifice, 13 is that light source inspecting hole, 14 is that detector inspecting hole, 15 is that installation screw 1,16 is that installation screw 2,17 is that installation screw 3,18 is that installation screw 4,19 is the connecting thread mouth.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, be the structural representation of embodiment of the invention device; Comprise cavity 1 and be built in transmitter unit, receiving element and control circuit board 7 in the cavity 1; Wherein: transmitter unit is the excitation source 2 of emitting ultraviolet light, shines in water body or the flow cell 4 through quartzy window 3, and what excitation source 2 adopted is ultraviolet LED, and centre wavelength is 365nm.
Receiving element, optical filter 5 before comprising photodetector 6 and being positioned at photodetector 6, fluorescence signal is after filtration after the filtration of mating plate 5, through photodetector 6 light signal is converted into electric signal, optical filter 5 adopts the bandpass filter optical filter of 420-600nm in the present embodiment, and photodetector 6 is photodiode.
As shown in Figure 2, be the module diagram of embodiment of the invention control circuit board.Control circuit board 7 comprises: control module module, transmitter unit module, data processing module.The control module module is connected with transmitter unit module, data processing module respectively.Light signal and the data acquisition control of control excitation source 2.
Control circuit board 7 is responsible for collection, temperature acquisition, concentration calculating, the data of fluorescence signal and is preserved, it is the MSP43f149 single-chip microcomputer that control circuit board 7 adopts model, the core of whole control, transmission, data acquisition, the data of being responsible for order process and with the communication function of host computer.
The transmitter unit module, the input end of its output terminal excitation source 2 connects, and is used for the work of control excitation source;
The input end of data processing module is connected with receiving element, is used for receiving the fluorescence signal that produces from excitation source 2, and output terminal realizes that by waterproof transmission cable 9 and host computer communication is connected.Data processing module calculates the concentration of water body PetroChina Company Limited. pollutant according to the data of collecting.
Temperature detecting unit also is installed in the cavity 1, and temperature detecting unit comprises the temp probe 8 that closely abuts on the cavity 1, and temp probe adopts thermistor in the present embodiment, and temp probe closely abuts on the Stainless Steel Shell.The output terminal of temperature detecting unit links to each other with an input end of control circuit board 7 by signal wire, temperature detecting unit measures ambient temperature before detection, and the survey data communication device is crossed signal wire be sent to storage area in the control circuit board 7, be used for the temperature of record environment.
Control circuit board 4 is connected to host computer by waterproof transmission cable 9, with data transmission to host computer.
As shown in Figure 3, be the physical construction schematic diagram of the embodiment of the invention.Transmitter unit and receiving element be by connecting as one of fixture structure, and be provided with excitation source 2 on the fixture inspecting holes 13 are installed, the installation inspecting hole 14 of detector 6, inspecting hole 13,14 printing opacity end are sealed and installed with quartz window 3.During installation, photodetector 6 passes mounting hole 14, and excitation source 2 passes inspecting hole 13, because quartz window 3 being installed, transmitter unit and receiving unit form enclosed construction, can prevent that water vapour from entering into rust steel cavity 1, the control circuit board 7 that protection is inner.
The circuit part of whole contrive equipment adopts cavity 1 hermetically-sealed construction, has good capability of electromagnetic shielding.The transmission of signal and supply line are transferred to host computer by cable interface 10.
The present invention both can adopt immersion measurement, also can adopt flow type to measure.
Flow cell 4 is furnished with water inlet 11 and water delivering orifice 12, can realize the flow type on-line measurement.
As shown in Figure 4, be the integrated design structural representation of embodiment of the invention optoelectronic components.
As shown in Figure 5, be the schematical top view of embodiment of the invention optoelectronic components, connect cavity and optoelectronic components by screw 15,16,17,18.
As shown in Figure 6, be embodiment of the invention oil pollution substrate concentration---fluorescence intensity measurement curve.Measuring sample is the standard solution that Laboratory Calibration is used, and the effective constituent of standard solution is naphthalene disulfonic acid disodium salt, and wherein, horizontal ordinate is the concentration of petroleum-type pollutant, and ordinate is the fluorescence signal intensity that obtains.From measurement result, exist good linear relationship between the fluorescence signal that variable concentrations is measured and the concentration of petroleum pollution.
Claims (10)
1. a sonde-type petroleum polluting water body thing on-line monitoring system is characterized in that, comprises
Excitation source (2) is used for emitting ultraviolet light, shines at a certain angle water surface to be measured;
Detector (6), the input end of light are equipped with optical filter (5), are used for receiving the fluorescence that water surface to be measured reflects;
Control circuit board (7), the control end of connection detector (6) and excitation source (2) is used for fluorescence signal collection, temperature acquisition, the pollutant levels calculating of water body PetroChina Company Limited., is connected to host computer by transmission cable (9).
2. a kind of sonde-type petroleum polluting water body thing on-line monitoring system according to claim 1, it is characterized in that: described excitation source (2), detector (6), control circuit board (7) are fixed in the cavity (1), and the below of cavity (1) is the flow cell (4) that water body to be measured is housed.
3. a kind of sonde-type petroleum polluting water body thing on-line monitoring system according to claim 1 is characterized in that: the quartzy window (3) that is fixed with exclusion of water steam above the described water body to be measured.
4. a kind of sonde-type petroleum polluting water body thing on-line monitoring system according to claim 1, it is characterized in that: described excitation source (2) is ultraviolet LED, and centre wavelength is 365nm.
5. a kind of sonde-type petroleum polluting water body thing on-line monitoring system according to claim 1 is characterized in that: it is the bandpass filter of 420-600nm that described optical filter (5) adopts centre wavelength.
6. a kind of sonde-type petroleum polluting water body thing on-line monitoring system according to claim 1, it is characterized in that: described detector (6) is photodiode.
7. a kind of sonde-type petroleum polluting water body thing on-line monitoring system according to claim 1, it is characterized in that: described control circuit board (7) is that model is the single-chip microcomputer of MSP43f149, comprising:
The control module module connects transmitter unit module and data processing module, is used for the control to transmitter unit module and data processing module;
The transmitter unit module, input end connection control unit module, output terminal connects excitation source (2), is used for the work of control excitation source (2);
Data processing module, reception is from the electric signal of the reflection fluorescence intensity of detector (6) transmission, get the concentration of water-outlet body PetroChina Company Limited. pollutant according to the corresponding relation of fluorescence intensity and water body PetroChina Company Limited. pollutant levels, and connect host computer by transmission cable (9).
8. a kind of sonde-type petroleum polluting water body thing on-line monitoring system according to claim 1, it is characterized in that: described control circuit board (7) also connects temperature sensor (8), adopts the temp probe of thermistor, closely abuts on the cavity (1).
9. a sonde-type petroleum polluting water body thing on-line monitoring method is characterized in that, may further comprise the steps:
Obtain the fluorescence intensity of water surface to be measured by excitation source (2) and detector (6);
According to the linear relationship between the concentration of fluorescence intensity and water body PetroChina Company Limited. pollutant, obtain the concentration of water body to be measured PetroChina Company Limited. pollutant.
10. a kind of sonde-type petroleum polluting water body thing on-line monitoring method according to claim 9 is characterized in that: the concentration of described water body to be measured PetroChina Company Limited. pollutant is transferred in the host computer.
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| CN201210281345XA CN102866136A (en) | 2012-08-09 | 2012-08-09 | Probe type on-line monitoring system and probe type on-line monitoring method for water petroleum pollutants |
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| CN201210281345XA CN102866136A (en) | 2012-08-09 | 2012-08-09 | Probe type on-line monitoring system and probe type on-line monitoring method for water petroleum pollutants |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792188A (en) * | 2014-01-16 | 2014-05-14 | 陕西正大环保科技有限公司 | Water quality monitoring device for oilfield reinjection water |
| CN106226280A (en) * | 2016-08-25 | 2016-12-14 | 江苏美淼环保科技有限公司 | In a kind of water, oil on-line monitoring is popped one's head in and uses online oil monitoring device in the water of this probe |
| CN104483301B (en) * | 2015-01-07 | 2017-01-25 | 曹远生 | Magnetic powder fluorescence index tester |
| CN107589101A (en) * | 2017-09-28 | 2018-01-16 | 中国石油天然气集团公司 | Online oil-polluted water detection means based on ultraviolet fluorescence method |
| CN110231322A (en) * | 2019-06-28 | 2019-09-13 | 浙江工业大学 | A kind of online oil spill monitoring device |
| CN110231374A (en) * | 2019-06-28 | 2019-09-13 | 浙江工业大学 | A kind of greasy dirt on-line monitoring method based on hydrophobic oil absorption material |
| WO2020082628A1 (en) * | 2018-10-24 | 2020-04-30 | 南京大学 | Led light source-based spectrometric water quality monitoring module and use method thereof |
| CN111089852A (en) * | 2019-12-20 | 2020-05-01 | 中国科学院合肥物质科学研究院 | Vertical section distribution in-situ detection system for petroleum hydrocarbon pollutants in polluted site |
| CN111413302A (en) * | 2020-03-20 | 2020-07-14 | 山东省科学院海洋仪器仪表研究所 | Method for calibrating underwater petroleum sensor by replacing petroleum standard with disodium 1, 5-naphthalenedisulfonate |
| CN111693501A (en) * | 2020-06-22 | 2020-09-22 | 浙江工业大学 | Oil stain online monitoring method and device based on hydrophobic oil absorption material |
| CN115656121A (en) * | 2022-10-10 | 2023-01-31 | 中国科学院合肥物质科学研究院 | Soil petroleum hydrocarbon detector system and soil petroleum hydrocarbon content in-situ detection method |
| CN116930141A (en) * | 2023-09-13 | 2023-10-24 | 国家海洋技术中心 | CDOM deep sea sensor by ultraviolet fluorescence analysis method |
| CN111693501B (en) * | 2020-06-22 | 2024-06-07 | 浙江工业大学 | Oil stain on-line monitoring method and device based on hydrophobic oil absorption material |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792188A (en) * | 2014-01-16 | 2014-05-14 | 陕西正大环保科技有限公司 | Water quality monitoring device for oilfield reinjection water |
| CN104483301B (en) * | 2015-01-07 | 2017-01-25 | 曹远生 | Magnetic powder fluorescence index tester |
| CN106226280A (en) * | 2016-08-25 | 2016-12-14 | 江苏美淼环保科技有限公司 | In a kind of water, oil on-line monitoring is popped one's head in and uses online oil monitoring device in the water of this probe |
| CN107589101A (en) * | 2017-09-28 | 2018-01-16 | 中国石油天然气集团公司 | Online oil-polluted water detection means based on ultraviolet fluorescence method |
| CN107589101B (en) * | 2017-09-28 | 2023-08-22 | 中国石油天然气集团有限公司 | Online oily sewage detection device based on ultraviolet fluorescence method |
| WO2020082628A1 (en) * | 2018-10-24 | 2020-04-30 | 南京大学 | Led light source-based spectrometric water quality monitoring module and use method thereof |
| CN110231374B (en) * | 2019-06-28 | 2022-03-18 | 浙江工业大学 | Oil stain online monitoring method based on hydrophobic oil absorption material |
| CN110231322A (en) * | 2019-06-28 | 2019-09-13 | 浙江工业大学 | A kind of online oil spill monitoring device |
| CN110231374A (en) * | 2019-06-28 | 2019-09-13 | 浙江工业大学 | A kind of greasy dirt on-line monitoring method based on hydrophobic oil absorption material |
| CN110231322B (en) * | 2019-06-28 | 2022-06-21 | 浙江工业大学 | Online oil spilling pollution monitoring devices |
| CN111089852B (en) * | 2019-12-20 | 2022-09-02 | 中国科学院合肥物质科学研究院 | Vertical section distribution in-situ detection system for petroleum hydrocarbon pollutants in polluted site |
| CN111089852A (en) * | 2019-12-20 | 2020-05-01 | 中国科学院合肥物质科学研究院 | Vertical section distribution in-situ detection system for petroleum hydrocarbon pollutants in polluted site |
| CN111413302A (en) * | 2020-03-20 | 2020-07-14 | 山东省科学院海洋仪器仪表研究所 | Method for calibrating underwater petroleum sensor by replacing petroleum standard with disodium 1, 5-naphthalenedisulfonate |
| CN111413302B (en) * | 2020-03-20 | 2022-10-04 | 山东省科学院海洋仪器仪表研究所 | Method for calibrating underwater petroleum sensor by replacing petroleum standard with 1, 5-naphthalene disulfonic acid disodium salt |
| CN111693501A (en) * | 2020-06-22 | 2020-09-22 | 浙江工业大学 | Oil stain online monitoring method and device based on hydrophobic oil absorption material |
| CN111693501B (en) * | 2020-06-22 | 2024-06-07 | 浙江工业大学 | Oil stain on-line monitoring method and device based on hydrophobic oil absorption material |
| CN115656121A (en) * | 2022-10-10 | 2023-01-31 | 中国科学院合肥物质科学研究院 | Soil petroleum hydrocarbon detector system and soil petroleum hydrocarbon content in-situ detection method |
| CN116930141A (en) * | 2023-09-13 | 2023-10-24 | 国家海洋技术中心 | CDOM deep sea sensor by ultraviolet fluorescence analysis method |
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Application publication date: 20130109 |