... traditional sands and coal filter material, ceramic sand filters have great advantages as follows:1. Shaped ... harmful substance dissolved out, the ceramic sand filters can ensure the treated water in consistent ... component 3. Technical Indexes of Ceramic Sand Filters ItemIndex Remark Particle size,mm0.5-3.0 ... m2.h2-4- Gas permeability,m3/m2h.h1500-2000- Thermal resistance,≥1000- Acid resistance,99.5Mixed ...