Water Pollution in Textile Industry

decline In the con. amount of chemicals used thereby reducing their harmful effects. Reduction of bumble concentration by recovery and employ. Reduction of superabundance concentration by chemical substitution. Reduction of waste concentration by process modification. sequestration of Fenton of each process. Devising fitted treatment for ultimate establishment, to meet the requirements. To explore the economics related to reuse of treated Fenton.Reduction In waste water volume Reducing the number of washing and use of impatient water in washings use of counter current washing use of standing bath in dyeing engage of low-pitched Liquor Ratio systems Good house keeping and prevention of leakages and spillages (A step-down of 20- 40 volume of wastewater generated Is possible) Reduction In con. / amount of chemicals Optimum use is necessary, which is not endlessly possible in textile processing industry Textile processing involves heterogeneous interactions between roughage material solid and chemicals liquid, solutions or emulsions.Essential operations involved in Textile Processing Maximum acumen of chemicals into quality material to achieve desired Interactions. Thorough removal of unused/unfixed chemicals and Impurities from the textile material. Because of the heterogeneousness of Interaction, only Limited absorption f various types of chemicals and coolants used for chemical processing onto the textile fiber materials is possible. Reduction of waste con. By recovery and reuse of Recovery of synthetic sizing agents from desiring bath and their reuse.Reactive dyes present very low BODY) Multifunctional reactive dyes for better fixation & less unfixed Use of non-ionic tessellate dipper alcohols and anionic polymerases in place of alkyl phenol tessellates CEO-friendly stabilizers, sequestrates Use of mineral acid in desiring Use of enzymes in various processes Substitution of sodium sulfide for sulfur dyes Disperse- hydrocarbon carriers No or less coal oil in Pigment Printing Partial or complete replacement of publish gums by suitable emulsions Formaldehyde free cationic dye fixing agent, DEEMED, low formaldehyde Low salt dyesReduction of waste con. By process modification Use of Foam technology Use of transfer paper printing Combined processes Automatic dispensing Segregation of drain Many a times it is convenient to segregate the waste water of a particular textile wet process for efficient reuse/ recovery of chemicals or dyes. This leads to economy of the process. However it is utmost necessary to have sufficient concentration of the chemical / dye in the waste water that can be economically recovered and put to reuse. If the concentration is too low or if the chemical is cheap, then this technique s ineffective.Devising suitable treatment for ultimate disposal Depends on mode of discharge of effluent. Balance between the capital cost and running cost of treatment. If disposal is into everyday sewers, preliminary t reatment (screening, grit removal and equalization) followed only by primary treatment with chemical coagulation, flocculation and deposit will be necessary. If disposal is directly to stream then primary and secondary treatment is necessary. If disposal is on the agriculture land, primary treatment followed by gypsum treatment for reduction of sodium will be necessary.