WASTE WATER AND ITS TREATMENT IN TEXTILE INDUSTRY VANDANA TRIPATHI.

Présentation au sujet: "WASTE WATER AND ITS TREATMENT IN TEXTILE INDUSTRY VANDANA TRIPATHI."— Transcription de la présentation:

1 WASTE WATER AND ITS TREATMENT IN TEXTILE INDUSTRY VANDANA TRIPATHI

2 Textile wastewater includes a large variety of dyes and chemical additions that make the environmental challenge for textile industry not only as liquid waste but also in its chemical composition. Main pollution in textile wastewater come from dyeing and finishing processes. These processes require the input of a wide range of chemicals and dyestuffs, which generally are organic compounds of complex structure. Water is used as the principal medium to apply dyes and various chemicals for finishes. Because all of them are not contained in the final product, became waste and caused disposal problems. Major pollutants in textile wastewaters are high suspended solids, chemical oxygen demand, heat, colour, acidity, and other soluble substances. Substances which need to be removed from textile wastewater are mainly COD, BOD, nitrogen, heavy metals and dyestuffs1,2.

3 WASTE WATER FROM DIFFERENT PROCESS

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5 PROCESS OF WASTE WATER TREATMENT

6 PRIMARY SCREENING SEDIMENTATION EQUALIZATION NEUTRALIZATION CHEMICAL COGULATION MECHNICAL FLOCCULATION

7 SCREENING SEDEMENTATION EQUALIZATION NEUTRALIZATION MECHNICAL FLOCCULATION CHEMICAL COGULATION PRIMARY TREATMENT

8 SECONDARY AERATED LAGOON TRICKLING FILTRATION ACTIVATED SLUDGE PROCESS OXIDATION DITCH /POND

9 AERATED LAGOONTRICKLING FILTRATION ACTIVATED SLUDGE OXIDATION DITCH / POND SECONDARY TREATMENT

10 TERTIARY OXIDATION TECHNIQUE ELECTROLYTIC PRECIPITATION & FOAM FRACTIONATION MEMBRANE TECHNOLOGIES ELECTROCHEMICAL PROCESSES ION EXCHANGE PHOTO CATALYTIC DEGRADATION ADSORPTION THERMAL EVAPORATION

11 OXIDATION TECHNIQUE ELECTROLYTIC PRECIPITATION & FOAM FRACTIONATION MEMBRANE TECHNOLOGIES ELECTROCHEMICAL PROCESSES ION EXCHANGE PHOTO CATALYTIC DEGRADATION ADSORPTION THERMAL EVAPORATION TERTIARY TREATMENT