Online detector for detecting total organic carbon (TOC) in sewage with ultraviolet spectrometry method

Abstract

The invention provides a detector for detecting total organic carbon (TOC) in sewage, mainly comprising a sample pool capable of being transmitted by ultraviolet rays, a UV optical splitter and a data processor of the organic carbon. The detector is characterized in that UV can emit 240-450nm of UV beams, and a neon lamp is used as a UV light source; the optical splitter is a UV reflective blazed grating, and the light strength of the light beams at each wavelength is detected by a linear array UV CCD (Charged Coupled Device); and the TOC value is determined according to the relationship between the absorbance at the feature wavelength and the TOC content. As known from the scheme, the detector has low cost and good stability and is capable of fully realizing automation and accurately measuring the TOC value so as to comprehensively reflect the pollution degree of the organic matter in the water. Thus, the detector has important help and realistic significance for monitoring and measuring the sewage discharge and the water pollution on the ground surface.

Description

technical field [0001] The invention relates to a detector for total organic carbon in sewage, in particular to a TOC detector for on-line monitoring of sewage which can be irradiated and analyzed by ultraviolet rays in a large spectral range. Background technique [0002] So far, organic pollutants in water have continued unabated. Organic pollution is the main problem of water pollution. Our life is inseparable from water, so we pay more and more attention to the monitoring of water and sewage. Total organic carbon TOC (Total organic carbon) is the sum of the carbon content of organic matter in water. The main elements in organic matter are represented by the amount of carbon. TOC can fully reflect the pollution level of organic matter to water. [0003] Now the United States mainly uses the TOC index to detect the organic matter content in water (Federal Industrial Standard D-2579), and Japan also includes the TOC index in the Japanese Industrial Standard (JIS, K0102), an...

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Problems solved by technology

[0008] The above-mentioned products are all imported products. Although the detection methods are mature and the detection accuracy is high, there are problems such as complex structure and high price.

In terms of environmental protection in our country, some practical problems exist: some polluting enterprises cannot consciously abide by environmental protection laws and regulations. When discharging sewage, they use methods such as secretly discharging at night, artificially diluting, discharging when no one is checking, and bribing inspectors to discharge sewage. ,avoid responsibility

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