What are sulfides? In fact, it refers to a compound formed by metals or non-metals with strong electropositivity and sulfur. Then, where do the sulfides existing in water bodies come from? Let’s take a look together with the editor of Hangzhou Modi!

In fact, sulfides exist in multiple industries and are not static. The industrial wastewater discharged from various chemical raw material production industries such as textile, gas, pulp, oil refining, and pulp all contain sulfides. If the wastewater contains sulfides, it can be reduced to produce sulfides under anaerobic conditions. At this point, what we need to do is not to criticize or complain, but to take corresponding measures to deal with the sulfides in the water and carry out online water quality monitoring to ensure that the sulfide content does not exceed the standard. As for the methods for treating sulfides in water, there is certainly not just one. The common ones include: converting sulfides into sulfide salts for flocculation and sedimentation, and converting sulfides into hydrogen sulfide vapor extraction.

What instrument should be used to detect the concentration of sulfides in water? The S-8000 Online Sulfide Analyzer for Water produced by Hangzhou Modi can be used to monitor the concentration of sulfides in water in real time. This instrument is a fully automatic analyzer that does not require personnel to watch over (including automatic zero adjustment, automatic calibration, automatic measurement, and automatic maintenance, etc.). It adopts the colorimetric method and first filters the water sample After filtration, it will be pumped into the reactor, where masking agents are injected to remove interfering substances. At the same time, the pH value of the solution is adjusted to achieve an appropriate acidity or alkalinity. Then, based on the water sample conditions, distillation technology is selected. This way, the sulfides in the water can be distilled into the colorimetric cell. After adding the characteristic display agent and sulfide for the display reaction, it is also necessary to measure the absorbance of the reactants. The concentration of sulfide in the water sample is calculated based on the absorbance value and the calibration factor stored in the analyzer.