Reduction in the con. ‘amount of chemicals used thereby reducing their harmful effects. Reduction of waste concentration by recovery and reuse. Reduction of waste concentration by chemical substitution. Reduction of waste concentration by process modification. Segregation Of effluent of each process. Devising suitable treatment for ultimate disposal, to meet the requirements. To explore the economics related to reuse of treated effluent.
Reduction in waste water volume Reducing the number of washing and use of hot water in washings Use of counter current washing use of standing bath in dyeing Use of low Liquor Ratio systems Good house keeping and prevention of leakages and spillages (A reduction of 20 -40 % volume of wastewater generated is possible) Reduction in con. Amount of chemicals Optimum use is necessary, which is not always possible in textile processing industry Textile processing involves heterogeneous interactions between fiber material – solid and chemicals – liquid, solutions or emulsions.
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Essential operations involved in Textile Processing : Maximum penetration of chemicals into fiber material to achieve desired interactions. Thorough removal of unused/unfixed chemicals and impurities from the textile material. Because of the heterogeneity of interaction, only limited absorption of various types of chemicals and coolants used for Heimlich processing onto the textile fiber materials is possible. Reduction of waste con. By recovery and reuse of chemicals Recovery of synthetic sizing agents from desiring bath and their reuse.