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20 December 2011

Water| Water consumption in Textile Industry

Water
Water is a liquid substance in room temperature which contains Hydrogen and Oxygen. It is a complex compound. The total amount of water in the world is about 75%. Natural water is  obtained in 3 steps. They are solid, liquid & vapour. Water has a incomparable power to  dissolve other compound. It is very difficult to obtain pure water in nature. Water is consists of two part Hydrogen & one part Oxygen. Its chemical formula is H2O. Water is converted to ice at 0°C & converted to vapour at 100°C the concentration of water is highest at 4°C.
Water is called universal solvent, because the solvency power of water is very high and most of the solute of this world is easily dissolved in the water.
Water consumption in Textile Industry
Textile Industry is one of the top ten Industry which consume high amount of water. The raw materials used greatly in textile wet processing is water. The quantity of water varies in different stages. Some textile mills have high water cost as they purchase water from municipal system. Therefore, quantity of water is a point to be observed in textile processing.
Water Consumption by different materials in Total Wet processing
Substrate Type                   Quantity(gallon/pounds)[Approximately]
Cotton                                                           24.9-34.9
Wool                                                             20-40
Nylon                                                            12.5-15
Rayon                                                            12.5-15
Polyester                                                      10-20
Acrylic                                                          10-20
Woven other                                                  2-50
Knit other                                                      3-40
Non woven                                                   0.3-9
Water Consumption in Textile Mills
Process                                  Consumption of water(%)
Spinning                                            6
Weaving                                            9
Bleaching, finishing                        38
Dyeing                                             16
Printing                                             8
Boiler                                              14
Others                                               9

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