Cadmium is a silvery – white, lustrous metal that predominantly exists in the divalent form in nature. Cadmium electroplating can provide a corrosion – resistant protective layer for substances such as iron and steel, owing to its good adsorption properties. In the industrial realm, approximately 90% of cadmium is utilized in industries including pigments, alloys, and plastic stabilizers. The sources of cadmium – containing wastewater also encompass various industrial production processes such as those in metal pharmaceuticals, paints, alloys, ceramics, and smelting.

Cadmium exhibits high toxicity. Water contaminated with cadmium can inflict severe harm on the human body, as cadmium is metabolized relatively slowly within the human body. For instance, in Japan, the “Itai – itai disease” emerged as a result of cadmium poisoning.

Treatment Methods for Cadmium – Containing Wastewater

Multiple treatment methods are available for cadmium – containing wastewater. These include adsorption methods, oxidation – reduction methods, iron oxide methods, hydroxide or sulfide precipitation methods, and biochemical methods. For high – concentration cadmium – containing wastewater or wastewater that has been concentrated after ion – exchange processes, electrolysis and evaporation recovery methods are also viable options.

Detection of Cadmium Content in Water after Treatment

To determine the cadmium content in water after treatment, the T8000 – Total Cadmium Online Analyzer can be employed to conduct real – time monitoring of cadmium in water. By observing the variations, it is possible to assess whether the cadmium content in water exceeds the standard. For further information regarding water quality monitoring instruments, please refer to Hangzhou Modi-Tech.