DE pool filters work by utilizing diatomaceous earth (DE) powder to trap very fine particles, effectively cleaning your pool water.
Here's a breakdown of the process:
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Diatomaceous Earth (DE): DE is a powder made from the fossilized remains of diatoms, a type of algae. These microscopic skeletons have intricate structures, creating a large surface area for trapping debris.
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Application: DE powder is added to the pool's skimmer. From there, it flows into the filter housing.
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Coating the Filter Grids/Fingers: Inside the filter housing are grids, fingers, or a manifold covered with a filter cloth or fabric. The DE powder coats these surfaces, forming a thin layer. This layer acts as the actual filtering medium.
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Filtration Process: As pool water is pumped through the filter, it passes through the DE-coated grids. The DE traps dirt, algae, bacteria, and other debris as small as 3-5 microns.
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Backwashing: Over time, the DE layer becomes clogged with debris, reducing the filter's efficiency. Backwashing reverses the flow of water through the filter, flushing the dirty DE and debris out through a waste port.
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Recharging: After backwashing, fresh DE powder must be added to the filter to recoat the grids and restore its filtering capability.
Key Advantages of DE Filters:
- Superior Filtration: DE filters can remove smaller particles than sand or cartridge filters.
- Clearer Water: The fine filtration results in exceptionally clear and sparkling pool water.
Key Disadvantages of DE Filters:
- Maintenance: DE filters require more frequent backwashing and DE powder replacement.
- Handling DE: DE can be messy to handle and requires careful disposal.
- Cost: DE filters and the DE powder itself can be more expensive than other filter types.
In essence, DE filters provide a very fine level of filtration by using a coating of diatomaceous earth to trap tiny particles, resulting in cleaner and clearer pool water.
