METHOD OF PURIFYING SEWAGE FROM PAINTS Russian patent published in 2002 - IPC

FIELD: purification of industrial circulating water and sewage from chemical, textile and leather fur enterprises. SUBSTANCE: method comprises addition of freshly prepared montmoryllonite suspension in 0.1M chloric iron solution activated by acoustic oscillations. Frequency of acoustic oscillations is 22 kHz, and activation time is 3 minutes. Method makes it possible to cut down significantly duration and working hours of preparation thereof, attain high degree of purification at initial concentrations of contaminants which exceed concentration in prior art method widen field of application and retain high purification efficiently. EFFECT: move efficient purification method. 5 ex