Pool Filtration Terms: Part Two

In part two of the glossary of swimming pool filtration terms we continue learning the definitions of all the components of your pool equipment.  Your pool filtration system is complex and this information will be valuable to know as you grow with your swimming pool. Click here if you missed Pool Filtration Terms: Part One!

Feed: The mixture of particles and fluid that is introduced into the pool filter. Terms used synonymously include “influent” and “incoming slurry.”

Filter: Verb: To pass fluid (pool water) containing suspended particles through a filter medium (pool filter cartridge) whereby the particles are separated from the fluid. Noun: A “device” for carrying out the filtration process, consisting of the filter medium and suitable hardware for constraining and supporting it in the path of the fluid.

Filter Aid: Any material (usually diatomaceous earth) that enhances the separation of solids from liquids in the filtration process.

Filter Cake: The combined layers of solids, precoat, and debris removed in the filtration process and accumulated on the surface of the pool filter medium.

Filter Cycle: The operating time between cleaning or backwash cycles.

Filter Medium: The permeable material such as diatomaceous earth, sand, or polyester non-woven material used to separate suspended particles from liquid.

Filtrate: Fluid that has passed through a pool filter. Also called the effluent.

Filtration: The process by which particles are separated from a liquid by passing through a permeable material.

Filtration Rate: Flow in gallons per minute (GPM) through one square foot of filter medium. For residential pools, the filtration rate should be 2 GPM per square foot of D.E. pool filter surface area and 1 GPM per square foot of cartridge filter surface area. For most commercial pools, the filtration rate should be 1 GPM per square foot of D.E. filter surface area and .375 GPM per square foot of cartridge filter surface area.

Flocculation: The process by which small dispersed particles combine together to form larger size particles which can be removed by the pool filter. The result of adding an electrolyte to the pool water.

These terms and definitions will come in handy when you are purchasing new pool equipment or perhaps looking for help with your existing pool equipment. Call a Pool Care Expert for any assistance needed.

Posted: Tuesday, July 24th, 2012 @ 5:05 pm
Categories: Pool Equipment.
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