A water pollution online monitoring device based on f-p cavity enhancement and its application method

Abstract

The invention relates to the technical field of online water pollution monitoring devices and application methods thereof and in particular relates to an F-P cavity enhancement based online water pollution monitoring device and an application method thereof. The F-P cavity enhancement based online water pollution monitoring device comprises a tunable ultraviolet laser, a circulator, an optical fiber coupler, an ultraviolet photoelectric detector, a fluorescence detection unit, a fluorescence detection probe, a sensing container and a computer, wherein the optical fiber coupler is used for transmitting and distributing light signals, and an F-P cavity is formed in the sensor, so that the detection sensitivity and accuracy are further improved. The online water pollution monitoring device disclosed by the invention is simple in structure, fast in response and high in reliability, is suitable for monitoring soluble organic composition and dynamic concentration change of the water body online, and has significances in environmental safety of water and water pollution control.

Description

technical field [0001] The invention relates to the technical field of water pollution on-line monitoring device and its application method, in particular to an F-P cavity enhanced water pollution on-line monitoring device and its application method. Background technique [0002] With the rapid development of industry and water transportation, the problem of water environment pollution in my country is becoming more and more serious. Harmful substances and organisms appear in the water body, which degrades the quality of natural water and leads to the loss of balance of the water ecosystem. Therefore, analysis and on-line monitoring of the composition and concentration of pollutants in environmental water are of great significance to water environmental safety and water pollution control. Total organic carbon (TOC) has been used as a legal comprehensive indicator of water quality in Europe, America, Japan and other countries. It directly reflects the degree of water pollutio...

AI Technical Summary

Problems solved by technology

Although the device can monitor the overall concentration and composition of dissolved organic matter in water, the optical signal transmission of the device requires the design of a light source control circuit, an amplification circuit, and an analog-to-digital conversion circuit, and the device is not equipped to enhance the water excitation fluorescence. For the components of the spectrum, in order to improve the monitoring sensitivity, it is necessary to increase the irradiation time of ultraviolet light and cooperate with the amplifier circuit to process the optical signal. There are many optical devices, the optical path is complicated, and the cost is high.

[0005] Therefore, the existing technology has a large room for improvement

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