... powder;the liquid is a colorless viscous, easy soluble in water,decomposes when temperature exceeds 120 °C. Nature: ... for sewage treatment,has a high efficiency of removing organic compounds in water, can not be replaced by other products. ... stones, ceramic filters, manganese sand filters, zeolite filters, fillers, bulk bauxite, corundum, white corundum, black corundum, silicon carbide, spinel ...