Filtered water refers to water that has been treated to remove impurities and pollutants. Usually, the technologies used in water filtration equipment on the market include activated carbon filtration, reverse osmosis, ultraviolet disinfection, etc.

A backwash disc water filter is a device that uses stacked discs (or discs) for filtration, and achieves water purification through physical interception and automatic backwashing. Its core component is a filter element composed of multiple discs with fine grooves stacked together.

The reverse osmosis filter passes water molecules through the membrane pores under high pressure through a semipermeable membrane, while pollutants such as dissolved salts, heavy metals, bacteria and viruses are retained on the other side of the membrane to achieve the purpose of water purification.