... Widely used as in industrial water, city water, city sewage, pure water Ceramic filter grain and sand ... filtration speed, longer regeneration cycle, and water output several times higher than that of ... , or be used to treat city water, industrial water and industrial sewage. It can also ... carbon-310%Common specificationΦ0.5-2. Φ4-6, Φ16, Φ25, Φ32 Ceramic filter grain and sands for waste water treatment ...