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Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
Induesturies part 2
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Induesturies part 2

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  • 1. TEXTILE INDUSTRY
  • 2. TEXTILE INDUSTRY
  • 3. INTRODUCTION  The textile dyeing and finishing sector uses large volumes of water and substantial quantities of complex chemicals.  Significant challenges associated with the acquisition and disposal of the raw materials.  The charges incurred for mains water supply and effluent disposal are increasing, and companies need to address these issues to save money and remain competitive.
  • 4. For cotton textile industry
  • 5. FOR WOOLEN TEXTILE INDUSTRY
  • 6. POLLUTION PROBLEMS IN TEXTILE INDUSTRY  Color  Dissolved solids  Toxic metals  Residual chlorine  Others (like non-biodegradable organics)
  • 7. TEXTILE INDUSTRY WASTE WATER CHARACTERISTICS
  • 8. TREATMENT OF WASTE WATER
  • 9.  Oxidation techniques: the treatment of synthetic dye house effluent by ozonization, and hydrogen peroxide in combination with Ultraviolet light; Sodium hypochlorite decolorizes dye  Electrolytic precipitation & Foam fractionation: reduction in the cathode space of an electrolytic bath; surface-active solutes collect at gas-liquid interfaces  Photo catalytic degradation: photoactive catalyst illuminates with UV light, generates highly reactive radical, which can decompose organic compounds.  Thermal evaporation: Use of sodium per sulphate; oxidative decolourisation of reactive dye by persulphate due to the formation of free radicals
  • 10. EFFLUENT CHARACTERISTICS AFTER TREATMENT Parameters Influent Primary treatment Ozonation RO Stage I RO Stage II Permeate Reject Permeate Reject pH 9.88 9.61 6.92 6.03 6.72 5.76 7.04 Total suspended solids, mg/l 167 56 19 6 70 6 124 Total dissolved solids, mg/l 3104 1946 3256 922 9830 196 17828 Chemical oxygen demand, mg/l 586 166 130 26 327 17 754 Biochemical oxygen demand, mg/l 190 41 41 1 16 2 208 Total Hardness, mg/l 96 60 Nil 1080 Chlorides, mg/l 334 636 692 314 108 34 4416 Colour, % purity <10 <10 Colorless Colorless <10 Colourless 10-20
  • 11. INNOVATIVE TECHNOLOGY  Ozonation- used for oxidation of organics and inorganic, deodorization, and decolourisation  Nanofilteration and Ultrafilteration- difference between reverse osmosis and ultrafiltration/nanofilteration is primarily the retention properties of the membranes  Crystallization- formation of solid crystals from a homogeneous solution; used to recover salts.  Multiple Effect Evaporation- vertical cell in which stainless steel tube is mounted; evaporator systems works on falling liquid film theory.
  • 12. QUESTIONS PLEASE…

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