CN108226437B - Method for correcting water quality monitoring result applied to lake and reservoir water body - Google Patents
Method for correcting water quality monitoring result applied to lake and reservoir water body Download PDFInfo
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- CN108226437B CN108226437B CN201810310114.4A CN201810310114A CN108226437B CN 108226437 B CN108226437 B CN 108226437B CN 201810310114 A CN201810310114 A CN 201810310114A CN 108226437 B CN108226437 B CN 108226437B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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Abstract
A method for correcting a water quality monitoring result applied to a lake and reservoir water body comprises the following steps: a) collecting a concentration value Tur of a water body by using a sensor of a water quality monitoring robot; b) calculating a corrected concentration value TurRepair the(ii) a c) Collecting colorimetric values Col of the water body by using a sensor of the water quality monitoring robot; d) calculating the corrected colorimetric value ColRepair the. The dissolved oxygen and the chromaticity values of the lake and reservoir water body at a certain depth are measured by the sensor measured by the three-dimensional scanning water quality monitoring robot for correction, so that the error of the water quality monitoring result caused by the dissolved oxygen and the chromaticity of the water body in the real-time detection process can be effectively reduced, and the accuracy of the water quality monitoring robot measuring result is greatly improved. Is beneficial to the monitoring and early warning of water bloom, red tide and algae, the early warning of sudden pollution accidents and the accurate evaluation of ecological environment.
Description
Technical Field
The invention relates to the technical field of water quality monitoring, in particular to a method for correcting a water quality monitoring result applied to a lake and reservoir water body.
Background
The lake and the reservoir body are used as important drinking water sources in China, and the quality of the water quality of the lake and the reservoir body is related to the drinking water health of hundreds of millions of people. Along with the continuous improvement of drinking water and drinking water treatment means, the requirement on water quality monitoring means is higher and higher. Based on the continuous improvement of traditional station house formula quality of water automatic monitoring station, buoy type water quality detector, bank side quality of water automatic monitoring station to and the continuous development of the water quality monitoring robot device of latest research and development, the water quality monitoring department can carry out more image, concrete, comprehensive and accurate description to the lake storehouse water, to the water safety of guarantee resident. The maintenance of urban water environment and water ecological balance is of great significance. Currently, scanning water quality monitoring robotic devices determine dissolved oxygen as an electrode sensor consisting of a cathode and an anode connected by a conductive electrolyte, with appropriate polarization voltages between the cathode and the anode capable of reducing O2 on the cathode, these chemical reactions producing a current proportional to the partial pressure of O2 in the measured solution; the sensor for measuring the contents of ammonia nitrogen, COD and chlorophyll a is a light-sensitive sensor, generally adopts two paths of light sources, namely one path of ultraviolet light and one path of infrared light, and can automatically compensate the influence of light path attenuation under general conditions, thereby realizing more stable and reliable measurement values. However, in the lake and reservoir water body, the dissolved oxygen is high, and the micro-bubbles have influence on the data measured by the sensor, so that the deviation between the measured data and the real data is caused. In addition, turbidity and chromaticity themselves have an influence on absorbance, causing measured values of ammonia nitrogen, COD and chlorophyll a to deviate from true values.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for correcting the water quality monitoring result applied to the water body in the lake and reservoir, which solves the problems that the existing water quality monitoring system is inaccurate in measured data, is beneficial to monitoring and early warning of water bloom, red tide and algae, early warning of sudden pollution accidents and accurate ecological environment evaluation.
The technical scheme adopted by the invention for overcoming the technical problems is as follows:
a method for correcting a water quality monitoring result applied to a lake and reservoir water body comprises the following steps:
a) collecting a concentration value Tur of a water body by using a sensor of a water quality monitoring robot;
b) by the formula TurRepair theThe corrected concentration value Tur +0.778 is calculated as 1.070 × Tur-0.141 × DO +Repair theDO is a dissolved oxygen parameter of a water body measured by an electrode sensor of the water quality monitoring robot, and the unit of the dissolved oxygen parameter is mg/L;
c) collecting colorimetric values Col of a water body by using a sensor of a water quality monitoring robot, wherein the colorimetric values Col are measured in degrees;
d) by the formula ColRepair theThe corrected colorimetric value Col is calculated by 1.02733 XCol-0.15739 XDO +1.37918Repair the。
Further, acquiring an ammonia nitrogen concentration value NH of the water body by a sensor of the water quality monitoring robot after the step d)3N in μ g/L by the formula NH3-NRepair the＝1.0006×NH3Calculating a corrected ammonia nitrogen concentration value NH +0.164 XDO +0.0423 XTur +0.0777 XCol-1.6833-NRepair the。
Further, the method also comprises the step of collecting the COD concentration value of the water body by a sensor of the water quality monitoring robot after the step d), wherein the unit of the COD concentration value is mg/L and the COD concentration value is obtained through a formulaRepair theThe corrected COD concentration value COD is calculated by 0.949 XCOD-0.169 XDO +0.0396 XTur +0.164 XCol +0.0975Repair the。
Further, a sensor of the water quality monitoring robot acquires a concentration value Chl of chlorophyll a of the water body after the step d), wherein the unit of the concentration value Chl is mu g/L and the concentration value Chl is obtained through a formula CODRepair theThe corrected chlorophyll a concentration value Chl was calculated from 0.949 × COD-0.169 × DO +0.0396 × Tur +0.164 × Col +0.0975Repair the。
The invention has the beneficial effects that: the dissolved oxygen and the chromaticity values of the lake and reservoir water body at a certain depth are measured by the sensor measured by the three-dimensional scanning water quality monitoring robot for correction, so that the error of the water quality monitoring result caused by the dissolved oxygen and the chromaticity of the water body in the real-time detection process can be effectively reduced, and the accuracy of the water quality monitoring robot measuring result is greatly improved. Is beneficial to the monitoring and early warning of water bloom, red tide and algae, the early warning of sudden pollution accidents and the accurate evaluation of ecological environment.
Detailed Description
The present invention is further explained below.
A method for correcting a water quality monitoring result applied to a lake and reservoir water body comprises the following steps:
a) collecting a concentration value Tur of a water body by using a sensor of a water quality monitoring robot;
b) by the formula TurRepair theThe corrected concentration value Tur +0.778 is calculated as 1.070 × Tur-0.141 × DO +Repair theDO is a dissolved oxygen parameter of a water body measured by an electrode sensor of the water quality monitoring robot, and the unit of the dissolved oxygen parameter is mg/L;
c) collecting colorimetric values Col of a water body by using a sensor of a water quality monitoring robot, wherein the colorimetric values Col are measured in degrees;
d) by the formula ColRepair theThe corrected colorimetric value Col is calculated by 1.02733 XCol-0.15739 XDO +1.37918Repair the。
The dissolved oxygen and the chromaticity values of the lake and reservoir water body at a certain depth are measured by the sensor measured by the three-dimensional scanning water quality monitoring robot for correction, so that the error of the water quality monitoring result caused by the dissolved oxygen and the chromaticity of the water body in the real-time detection process can be effectively reduced, and the accuracy of the water quality monitoring robot measuring result is greatly improved. Is beneficial to the monitoring and early warning of water bloom, red tide and algae, the early warning of sudden pollution accidents and the accurate evaluation of ecological environment.
The method also comprises the step of acquiring the ammonia nitrogen concentration value NH of the water body by a sensor of the water quality monitoring robot after the step d)3N in μ g/L by the formula NH3-NRepair the＝1.0006×NH3Calculating a corrected ammonia nitrogen concentration value NH +0.164 XDO +0.0423 XTur +0.0777 XCol-1.6833-NRepair the. Thereby realizing the correction of the ammonia nitrogen concentration measurement value.
The method also comprises the step of acquiring the COD concentration value of the water body by a sensor of the water quality monitoring robot after the step d), wherein the unit of the COD concentration value is mg/L and the COD concentration value is obtained through a formulaRepair theThe corrected COD concentration value COD is calculated by 0.949 XCOD-0.169 XDO +0.0396 XTur +0.164 XCol +0.0975Repair the. Thereby realizing the correction of the COD concentration value.
The method also comprises the step that a sensor of the water quality monitoring robot acquires the concentration value Chl of the chlorophyll a of the water body after the step d), wherein the unit of the concentration value Chl is mu g/L, and the concentration value Chl is obtained through the formula CODRepair theThe corrected chlorophyll a concentration value Chl was calculated from 0.949 × COD-0.169 × DO +0.0396 × Tur +0.164 × Col +0.0975Repair the. Thereby realizing the correction of the concentration value of the chlorophyll a.
Claims (3)
1. A method for correcting a water quality monitoring result applied to a lake and reservoir water body is characterized by comprising the following steps:
a) collecting a concentration value Tur of a water body by using a sensor of a water quality monitoring robot;
b) by the formula TurRepair theThe corrected concentration value Tur +0.778 is calculated as 1.070 × Tur-0.141 × DO +Repair theDO is a dissolved oxygen parameter of a water body measured by an electrode sensor of the water quality monitoring robot, and the unit of the dissolved oxygen parameter is mg/L;
c) collecting colorimetric values Col of a water body by using a sensor of a water quality monitoring robot, wherein the colorimetric values Col are measured in degrees;
d) by the formula ColRepair theThe corrected colorimetric value Col is calculated by 1.02733 XCol-0.15739 XDO +1.37918Repair the。
2. The method for correcting the water quality monitoring result applied to the water body in the lake or reservoir according to claim 1, which is characterized in that: further comprising the step of collecting the ammonia nitrogen concentration value NH of the water body by a sensor of the water quality monitoring robot after the step d)3N in μ g/L by the formula NH3-NRepair the＝1.0006×NH3Calculating a corrected ammonia nitrogen concentration value NH +0.164 XDO +0.0423 XTur +0.0777 XCol-1.6833-NRepair the。
3. The method for correcting the water quality monitoring result applied to the water body in the lake or reservoir according to claim 1, which is characterized in that: the method also comprises the step of collecting the COD concentration value of the water body by a sensor of the water quality monitoring robot after the step d), wherein the unit of the COD concentration value is mg/L and the COD concentration value is obtained through a formulaRepair theThe corrected COD concentration value COD is calculated by 0.949 XCOD-0.169 XDO +0.0396 XTur +0.164 XCol +0.0975Repair the。
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| CN101718774B (en) * | 2009-11-09 | 2012-11-28 | 东南大学 | Diagnostic method for validity of online collected water quality data |
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| CN103983595B (en) * | 2014-05-27 | 2016-08-24 | 重庆大学 | A kind of water turbidity calculation method processed based on ultraviolet-visible spectrum |
| CN104807862B (en) * | 2015-04-20 | 2018-05-18 | 中国农业大学 | Detect the method and device of oxygen in water |
| CN105712497B (en) * | 2016-01-18 | 2018-07-27 | 同济大学 | A kind of activation of microorganism method and system of eutrophication water restoration of the ecosystem |
| CN107290495A (en) * | 2017-07-11 | 2017-10-24 | 中国科学院南京地理与湖泊研究所 | Evaluation of river water quality method based on multi-parameter index |
| CN107543906B (en) * | 2017-09-01 | 2020-10-27 | 九阳股份有限公司 | Self-correcting method for water purifier sensor |
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| CN103439472A (en) * | 2013-06-14 | 2013-12-11 | 北京工商大学 | Lake-reservoir cyanobacteria water bloom recognition method based on remote sensing monitoring and evidence fusion technology improvement |
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