What is the optimal filtration rate for a diatomite filter?

The optimal filtration rate for a diatomite filter is indeed 1 to 2 gallons per minute per square foot (gpm/ft²). Diatomite filters, which use fossilized remains of diatoms as a filter medium, are designed to effectively remove particulate matter from liquids, particularly water in various applications like swimming pools or industrial processes.

This filtration rate strikes a balance between effective filtration and minimizing the risk of blinding the filter medium, which can occur at higher rates. Operating within this range allows for sufficient contact time between the water and the filter medium, ensuring thorough filtration while maintaining flow rates that are manageable for the system. If the filtration rate exceeds this range, the diatomaceous earth may not be able to effectively trap particles, leading to decreased filter effectiveness and potentially requiring more frequent cleaning and maintenance.

In practical applications, understanding this optimal rate helps environmental health specialists ensure that filtration systems are operating efficiently for the safety and quality of the water being treated.