Liquor Ratio Reduction and Water Efficiency in Exhaust Dyeing
topic
Exhaust dyeing liquor ratio reduction from conventional 10 to 30 to modern 4 to 8 litres per kilogram in low liquor ratio jet machines reduces water consumption, effluent volume, dye and chemical usage per kilogram of fabric, and heating energy through the smaller volume that must be heated and cooled per batch, with low liquor ratio machines achieving 50 to 70 percent reduction in water consumption and 30 to 40 percent reduction in energy per kilogram dyed.
Role
Addresses the primary sustainability challenge of exhaust dyeing through liquor ratio minimisation that reduces water consumption and effluent volume that represent the dominant environmental impact of textile wet processing, with low liquor ratio dyeing being both an economic and environmental improvement that reduces water, energy, and chemical costs per kilogram of fabric dyed while requiring reformulated dyeing processes adapted to the changed liquor volume conditions.