On-line water quality detector and on-line water quality detecting method

Abstract

The invention relates to an on-line water quality detector and an on-line water quality detecting method. The on-line water quality detector comprises a spectrograph and a light source, wherein the light source is a xenon lamp, the xenon lamp is connected with one end of a transmitting optical fiber, an optical fiber receiving terminal corresponding to an optical fiber transmitting terminal is arranged on the other side of the inner wall of a runner pipe, the optical fiber receiving terminal is one end receiving an optical fiber, the other end of the receiving optical fiber is connected with a receiving end of the spectrograph, and the signal output end of the spectrograph is connected with a data processing device. The water quality detector adopts an ultraviolet full-spectrum scanning technology and a sensor detection technology, a mathematical model of an obtained water sample is established in a full-wave-band spectrum of an ultraviolet zone through a chemometric algorithm and is gradually steady with increase of the number of samples, further the effect of predicting the concentrations of various parameters in the water sample is achieved, and the concentrations of various detected parameters in the water sample can be very accurately obtained only by obtaining the ultraviolet full-wave-band spectrum of the water sample and data transmitted by sensors by utilizing the already established mathematical model.

Description

technical field [0001] The invention relates to a water quality monitoring device, in particular to an online water quality detector. Background technique [0002] Water quality detection usually needs to detect a variety of parameters, such as COD, BOD, ammonia nitrogen, total phosphorus, total nitrogen, temperature, pH value, conductivity, dissolved oxygen and turbidity in water and other conventional characteristic parameters. COD-definition Chemical oxygen demand (COD or CODcr) refers to the amount of oxidant consumed when the reducing substances in water are oxidized and decomposed under certain strict conditions under the action of an external strong oxidant, expressed in mg / kg of oxygen L said that the chemical oxygen demand reflects the degree of water pollution by reducing substances. [0003] The detection of parameters such as COD, BOD, ammonia nitrogen, total phosphorus, and total nitrogen can be detected by a spectrophotometer. Under different conditions, the w...

AI Technical Summary

Problems solved by technology

In the prior art, water quality testing needs to be pre-treated by adding corresponding reagents dropwise. The general testing instruments are separated from the pre-processing device and the testing device, and it is inconvenient to operate the machine.

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