SunDec – Decolorant / Colour Removal Polymer Supplier in Surat
Hot, coloured effluent from synthetic dyeing and printing at Pandesara and Sachin still carries dye after coagulation. SunDec binds what is left.
Dosing after coagulation
Add SunDec after the coagulant, with gentle mixing, then flocculate.
A synthetic-textile city
Much of India's synthetic fabric for sarees and dress material is processed here, mostly polyester. Dyeing is done with disperse dyes at high temperature, and printing brings thickeners, pigments and wash-off water.
What comes out is hot and coloured and holds carriers, dispersing agents, thickeners and fibre fines. Rinse water from printing can be heavy with gum and pigment, so the clarifier takes on a large solids load.
Documents for SunDec SC05
Colour after coagulation
Disperse dyes are less soluble than the reactive dyes used on cotton, but much of the colour still passes coagulation. SunDec SC05 captures that colour; a cationic grade, Sunfloc Cationic HQ for example, then settles the combined floc.
Order matters. Neutralise and coagulate, add the decolorant, and only then flocculate.
Common plants at Pandesara and Sachin
Many units send pre-treated effluent to common plants that handle large, variable flows. Colour that passes the member unit becomes the common plant's problem, so reducing it on site helps both. The Gujarat Pollution Control Board regulates units; road freight from Chennai covers about 1,610 km in about four days. More in the Surat guide, and the sludge side on SunMac for Surat.
SunDec questions from Surat
Does it handle disperse dye?
It binds dissolved dye into particles that can be settled. A jar test shows the result on your effluent.
What about printing wash-off?
Coagulation removes much of the gum and pigment first; SunDec then works on the dissolved colour.
How is it packed?
In drums, a clear liquid, colourless to yellow.
SunDec in other cities
More on Surat
Start a SunDec trial in Surat
Dye houses and CETPs in Surat: send a litre of equalisation-tank effluent for a free decolorant trial.