METHOD OF TREATMENT OF AIR EXHAUST FROM STAINING CHAMBERS Russian patent published in 1995 - IPC

FIELD: treatment technology. SUBSTANCE: air exhaust were sprayed with water containing surface-active substance at concentration 6-7 mg/l. Surface-active substance is a water-soluble polyelectrolyte of cation type ВПК-402 made on the basis of polydimethyldiallylammonium chloride, viscosity is 2 cSt, not less. Method ensures to increase treatment degree from solvents up to 95.3-98.4% and provides the residual dye dust concentration 0,3-4,4mg/m³. EFFECT: improved efficacy of treatment. 1 tbl