METHOD OF PREPARING GRANULATED FILTER MATERIAL

摘要

filter materials. SUBSTANCE: dolomite is ground and classified to give fraction 0.3-1.5 mm. Resulting intermediate is baked in air atmosphere at 500-900 C for 1 to 3 h, cooled to ambient temperature and treated with solution containing 0.01- 0.2 M Mn(II) solution. Solution is then discarded and material is dried at 100-200 C. Material can be used for treatment of natural household-utility water and waste waters. EFFECT: increased sorption capacity of material when removing iron and manganese from water to achieve values below allowable values. 1 tbl