Sand Filter

A sand filter, or sand water filter, makes use of sand to filter water. The water to be purified slowly sinks through the sand of the sand filter, leaving the dirt particles from the water behind in the fine pores of the sand.Sand filters are used as a step in the water treatment process of water purification. There are three main types; rapid sand filters, upward flow sand filters and slow sand filters. All three methods are used extensively in the water industry throughout the world. A sand filter is essentially a tank full of sand that's connected to your pool's filtration network. As pool water passes through the sand tank, the sand catches debris and particles and prevents them from returning to the pool. This results in cleaner, clearer water.