Jaipur textile printing effluent: a guide
How Sanganer and Bagru printing units in Jaipur deal with coloured wash-off, thickeners and scarce water, and how decolorant and polymer help them reuse it.
Printing clusters
Sanganer and Bagru are known for hand-block and screen printing, alongside larger dyeing and finishing units. Much of the effluent comes from washing printed fabric to remove excess dye and thickener.
What printing effluent carries
Wash-off water is coloured and carries thickeners, gums, binders and fixing agents. It is often thick with fine solids, and its strength changes with every print run.
Colour and solids
Coagulation removes much of the gum and pigment. SunDec SC05 binds the remaining dissolved dye, and a cationic grade such as Sunfloc Cationic MQ or Sunfloc Cationic HQ builds settling flocs.
Water is scarce
Rajasthan is one of India's driest states, so many units recover treated water for washing. A clear clarifier overflow makes filtration and reuse far easier.
Small units and common plants
Many printers are small and send effluent to a common effluent plant. Even so, settling solids on site and keeping doses steady helps meet the plant's inlet limits.
Regulation and supply
Units are regulated by the Rajasthan State Pollution Control Board. Road freight from Chennai usually takes five to six days.
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