Pollution Control Dyeing Units

• Volatile organic compounds (VOCs)
• Nitrogen oxides (NOx)
• Hydrogen chloride (Hcl)
• Sulphur oxides (Sox)

• Lower toxicity.
• Much improved levelling and exhaust characteristics.
• Narrower quality tolerances.

Improvements in Dyes: Following developments shows the keenness of Dye manufacturers towards environment. Although these dyes may be a bit expensive, but considering the potential long term savings made from efficient dye use and a lower effluent cost. It is worth every penny.

• Development of fibre-reactive dyes for fibres like cellulosics, that has stable fixation rates without regard to variations in dyeing conditions, like liquor ratio, quantities of salt or alkali temperature, time etc.
• Metal-free reactive dyes that has high fixation rates along with minimum salt consumption.
• Low-sulphide or even sulphide-free dyes.
• Formulating granular dyestuff that are easy to handle and dissolve and that reduces dust generation.
• The gradual withdrawal and newer replacement for azo-dyestuffs that are threat as a potential carcinogenic.
• Researches made into dyestuffs with biodegradable formulating agents.

Improvement in Dyeing units: The dyeing units are also not left behind when it comes to addressing the problem of controlling pollution. Some of this effective steps are highlighted below.

• Effective recycle of cone-dye cooling water.
• Air conditioning system water is recycled.
• Disseminating knowledge to workers for proper utilization of water and power consumption.
• Installation of screens in drain lines that reduces the solid particles in effluents.
• Proper implementation of a maintenance plan for steam traps.
• Digital monitoring systems for use in boilers.