Sodium Metabisulfite In Water Treatment

Sodium metabisulfite, a white crystalline powder with the chemical formula Na2S2O5, is commonly used in water treatment as a reducing agent and disinfectant. When added to water, it reacts with dissolved oxygen to form sulfite ions (SO3^2-), which can then react with any remaining chlorine molecules to produce chloride ions (Cl^-) and ultimately remove them from the water.

In addition to its chlorine removal properties, sodium metabisulfite also has the ability to break down organic matter and kill bacteria and other microorganisms that may be present in the water. However, it should be noted that excessive use of sodium metabisulfite can result in the formation of harmful byproducts such as trihalomethanes, which are known carcinogens.

To ensure safe and effective use of sodium metabisulfite in water treatment, it is important to carefully follow dosage instructions and monitor the levels of residual sulfites and chlorine in the treated water. Additionally, proper storage and handling procedures should be followed to avoid contamination and ensure the purity of the compound.