What is the process of sequestration in water treatment?

Sequestration in water treatment refers specifically to the process of adding substances like polyphosphate or sodium silicates to water. This method is primarily employed to prevent the precipitation of metals, such as iron and manganese, by keeping them soluble and thus improving the clarity and taste of the water. In addition, these additives help to control scale formation in pipes and treatment equipment, which can be crucial for maintaining system efficiency and preventing costly maintenance.

By incorporating these compounds into the water supply system, facilities can enhance water quality and address issues related to hard water. This approach not only helps in reducing corrosion and scaling in distribution systems but also helps manage potential health risks associated with the presence of certain metals. Sequestration effectively supports the overall treatment process by ensuring a more stable and manageable water quality, which is essential for safe drinking water provision.