FIELD: purification of sewage. SUBSTANCE: sewage is allowed to stand, then resin and resin supernatant fractions are separated from it. Clay mineral being activated by sulfuric acid is added into resin supernatant fraction, its quantity being 30-40 kg per 1 m3. Thus obtained mixture is allowed to stand within 18-30 min and crystalline ammonium carbonate is added into it, its quantity being 14-16 kg per 1 m3 of resin supernatant water. After sustaining within 3-5 min liquid phase is separated and removed in sewer system. EFFECT: improves efficiency of method.
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