Acid and alkali permanganate index on-line one-machine monitoring system and detection method thereof

Abstract

The invention provides an acid and alkali permanganate index on-line one-machine monitoring system and the detection method thereof. The acid and alkali permanganate index on-line one-machine monitoring system includes an ARM9 main-control system, a permanganate index on-line monitoring instrument and a chloride ion concentration measuring instrument, wherein the ARM9 main-control system is connected with the permanganate index on-line monitoring instrument and the chloride ion concentration measuring instrument through a CAN bus respectively; the permanganate index on-line monitoring instrument includes a peristaltic pump, a measuring cup, a liquid level detector, a ten-port multi-position valve, a digestion titration device, a water sample, a reagent and distilled water; the water sample, the reagent and the distilled water are connected with distribution ports of the ten-port multi-position valve respectively; the lower end of the measuring cup is connected with a common port of the ten-port multi-position valve; the peristaltic pump is connected with the upper end of the measuring cup through a pipeline; the liquid level detector is installed at the upper part of the measuring cup; and one distribution port of the ten-port multi-position valve respectively is connected with a liquid inlet / outlet of the digestion titration device. Considering the economy and environmental protection, the invention provides a technical device for measuring the permanganate index through integrating the two standard acid and alkali permanganate index methods.

Description

technical field [0001] The invention relates to an online water quality automatic monitoring system in the field of environmental protection, in particular to an online permanganate index monitoring system. Background technique [0002] The permanganate index is a commonly used indicator to reflect the organic and inorganic oxidizable substances in water. The determination of permanganate index of surface water, drinking water and water source water adopts the national standard "Determination of Permanganate Index of Water Quality" (GB 11892-89). Permanganate index method. At present, most of the on-line permanganate index detectors available in the market use the acidic potassium permanganate method, and the online monitoring instruments of the alkaline permanganate index method that meet the national standard method have not yet appeared. Therefore, for water samples with high chloride ion content and water bodies with constantly changing water quality (changes in salini...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the situation that the existing single acidic permanganate index on-line monitoring device cannot accurately determine the situation of water bodies with constantly changing water quality and high-chlorinated water samples, the present invention provides an acid and alkali one-machine permanganate index on-line monitoring system

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