Pool sand filters are a common type of filters used in pool filtration systems. These filters are so called because they contain a layer of sand inside, which is responsible for retaining impurities and suspended material that accumulate in the pool water. The sand used in these filters is usually silica sand, since it is a porous material that has a large surface area for retaining impurities.
To use a pool sand filter, sand is poured inside the filter and the lid is closed. The filter is then connected to the pool water recirculation line and the pump is turned on, which recirculates the water through the filter. The sand retains impurities as the water passes through the filter, allowing clean water to return to the pool.
Pool sand filters have several advantages. First, they are relatively inexpensive. Second, they are durable and require little maintenance, as the sand can be used for several years before needing to be replaced. In addition, pool sand filters are efficient at removing impurities and can handle a large amount of water in a short period of time.
However, pool sand filters also have some disadvantages. The sand can become clogged over time, which can reduce the efficiency of the filter, which is why sand cleanings must be done regularly, also, they are not the most effective filtration system for removal of very small particles, such as dust or fine dirt, in these cases, the best filtration system are cartridge filters.
