A swimming pool filter system works to remove impurities and contaminants from the water, helping to keep the pool clean and safe for swimming. There are three main types of pool filters: sand filters, cartridge filters, and diatomaceous earth (DE) filters. Here's a general overview of how each type works:
1. Sand Filters:
- In a sand filter system, water from the pool is pumped into the filter tank, which contains a layer of specially graded pool filter sand.
- As water passes through the sand, the sand particles trap small debris and impurities while allowing clean water to pass through.
- Periodically, the filter goes through a process called "backwashing," where the water flow is reversed to flush out the trapped debris, and the filter sand is cleaned.
2. Cartridge Filters:
- Cartridge filters contain a pleated polyester cartridge that traps debris and impurities as water passes through it.
- The surface area of the cartridge allows for efficient filtration, and cartridge filters can trap smaller particles than sand filters.
- When the cartridge becomes dirty, it can be removed from the filter and cleaned with a hose or replaced with a new cartridge.
3. Diatomaceous Earth (DE) Filters:
- DE filters use grids coated with diatomaceous earth, a fine, porous powder made from the fossilized remains of diatoms.
- As water passes through the DE-coated grids, the diatomaceous earth traps even smaller particles and debris than sand or cartridge filters.
- Periodically, the filter requires "backwashing" and "recharging" with new diatomaceous earth to maintain its efficiency.
In all three types of filters, the clean, filtered water is then returned to the pool, while the trapped debris and impurities are flushed out of the filter system.
The filter system is an essential component of the pool's circulation and filtration system, working in conjunction with the pump and other equipment to maintain water clarity and cleanliness. Regular maintenance, including cleaning and periodic backwashing or recharging, is necessary to ensure the filter system continues to operate effectively. Fenlin will help you to choose right filters.
