Multi media filter is a process of using one or several kinds of filter media to pass the water with high turbidity through the granular or non granular materials with certain thickness under certain pressure, so as to effectively remove the suspended impurities and make the water clear. The commonly used filter materials are quartz sand, anthracite, manganese sand, etc., which are mainly used for water treatment and turbidity removal, softened water, pre-treatment of pure water, etc., and the turbidity of the effluent can reach 3 degrees Following.

Common multi-media filters are: Anthracite quartz sand magnetite filter, activated carbon quartz sand magnetite filter, activated carbon quartz sand filter, quartz sand ceramic filter, etc.