When it comes to cyanide, many people may not have heard of it. In fact, it refers to a compound containing a cyanide group. So, how could it be among the pollutants in the sewage? In this article, let’s explore related issues together with the manufacturer of Online Water Quality Monitoring Instruments!
In fact, it’s quite simple. Cyanide pollution occurs in the production processes of many industries, especially in industry, where cyanide is widely used. Cyanide is contained in the wastewater discharged from industries such as electroplating, painting, dyeing, rubber, synthetic fibers, and industrial gas washing.
May I ask what kind of harm cyanide can cause? It can be roughly divided into two situations
1.It shows occupational cyanide poisoning, mainly through the respiratory tract, or in high concentrations, it may also be absorbed through the skin.
2.Another type is domestic cyanide poisoning, which is usually mainly caused by oral intake and then fully absorbed through the oral mucosa and digestive tract.
What are the specific harms? When cyanide enters the human body through different methods, it will release cyanide ions. These ions will combine with trivalent iron (an oxidized cytochrome oxidase in the mitochondria of cells), and also prevent the trivalent iron of the oxidase from undergoing reduction reactions. As a result, the tissue cells cannot use oxygen smoothly, leading to a state of hypoxia and causing the body to fall into a state of asphyxia. Another point is that some molecules of nitrile compounds themselves have an inhibitory effect on the central nervous system.
The methods for treating cyanide in water include ozone oxidation, chlorine oxidation and electrolytic oxidation, etc. When treating cyanide-contaminated wastewater, we add the oxidant sodium hypochlorite to the wastewater to first convert it into cyanide chloride, then hydrolyze it into cyanate, and then oxidize it into carbon dioxide and nitrogen under alkaline conditions. This is the process in which they are transformed into ammonium salts under acidic conditions.
To know the amount of cyanide in wastewater, online water quality monitoring is indispensable. To monitor cyanide in water, we can use the T8000-CN Online Cyanide Monitoring Instrument for real-time detection.
