Turbidity measurement method and device

Abstract

The invention relates to the field of water quality detection and particularly relates to a turbidity measurement method and device. The measurement method comprises the following steps: irradiating a sample to be detected by using paralleled light; receiving actually-measured light intensity of transmission light and scattered light; calculating an attenuation coefficient on light by the sample to be detected; and according to the attenuation coefficient and the actually-measured light intensity of the transmission light vertical to the transmission direction of the paralleled light, calculating compensation light intensity so as to obtain the turbidity of the sample to be detected. The measurement device comprises a body and at least two light detectors; the body is provided with a containing cavity and is used for receiving the sample to be detected; a light source and each light detector are located at the peripheral edge of the containing cavity; and at least one light detector is arranged at each of parts of the body in the light transmission direction of the light source and the light transmission direction vertical to the light source. According to the turbidity measurement method and device, the compensation of absorption coefficients in a water sample is carried out on the scattered light by using the transmission light, and the turbidity measurement precision is improved; and meanwhile, a turbidity measurement range is relatively large, and the design and production are convenient.

Description

technical field [0001] The invention relates to the field of water quality detection, in particular to a method and device for measuring turbidity. Background technique [0002] In the detection of various parameters of water quality, the measurement of turbidity is of great significance for industrial water and domestic water. The turbidity of water quality refers to the degree of turbidity of water. According to the definition of the international standard ISO7027-1984 for turbidity measurement: turbidity reflects the degree of scattering and absorption of light passing through it by solid micro-suspended substances in water. Suspended solids in water include insoluble inorganic and organic substances such as sediment, clay, microorganisms, etc. National drinking water standards and industrial water standards in many industries have set strict requirements on the parameters of turbidity. [0003] At present, the measurement of water quality turbidity, in accordance with ...

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Problems solved by technology

[0006] Based on this, it is necessary to provide a method for measuring turbidity in order to solve the problem of how to solve the nonlinear effects caused by chromaticity absorption and high turbidity, and improve the accuracy of measurement.

[0007] It is also necessary to provide a turbidity measuring device for how to solve the problem of how to solve the nonlinear influence caused by chromaticity absorption and high turbidity, and improve the accuracy of measurement

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