I am working with a raw water sample from a textile company. They have wet dyeing processes for polyester yarn and nylon hosiery and I would like to know if there are standard paramater for the water used in such processes.
I am specially interested in carbonates, bicarbonates, pH, hardness, magnesium, TDS and iron.
I would be very grateful if someone could help me with information or a paper/standard about it.
In textile industries, for dyeing process, generally copper dyes are used. So, you must consider the copper also for your research.
Well,
Textile industries are industries scattered everywhere, from poor countries to developed countries and depends on production processes on water to a large extent, especially in the washing of raw materials (wool in particular), which greatly increase the concentration of plankton as well as dyeing and coloring processes that use pigments Are heavy mineral salts or toxic organic substances. Contaminants are created from impurities and dirt that are suspended in wool fibers, from washing residues of dyed fibers and chemicals used in production from deficient and colored materials. The production of 1,000 kg of wool results in the loss of 1500 kg of impurities, dirt and other contaminants in the form of damaged wool fibers, sand and dirt, fat and heavy metals, accompanied by an increase in the value of the biochemical requirement of oxygen to Limits of 200-250 mg / l, and cotton industries lead to similar but lower contamination.
Tanning plants, another sector of water pollution in the case of inadequate pollution control measures. These industries depend on the receipt of animal skins from massacres, washing them and then preparing them for tanning and dyeing with special dyes consisting of toxic compounds and producing leather products. Contaminants from these industries are the high values of fats, salts and heavy metals to increase the value of biochemical requirements for oxygen.
Regards
Dear Bayan,
My sample is raw water and I want to know the ideal conditions for the dyeing process, but thank you very much for your respond, it is interesting.
Regards.
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