Wastewater Treatment in Textile processing industry using advanced treatment technology

摘要

Textile industrial wastewater treatment was investigated in this study. Most of the effluents from different industrial source were used to be discharged directly in the soil or in ground water. But due to the stringent environmental restriction, Central Pollution Control Board (CPCB) has become more strict and has imposed very stringent for recovering pure water such industrial effluents. Textile knitted fabric dyeing industry involves considerable amount of water usage as well as polluted and highly colored waste water discharges. Assessment of wastewater is treated using a biological unit process, the waste water passed into ultrafiltration (UF), two stages reverse osmosis (RO) membrane system where the permeate is reused for processes. This rejects about 10 - 12% of the inlet volume is then subjected to reverse osmosis and sent to evaporators. Dye bath water after treating, the permeate is used in process for dye bath preparation and this reject about 20-25% is sent to multi effect evaporator I solar evaporation pond (SEP). The final rejects from reverse osmosis system is directed to multi effect evaporator system where condensed waters are recovered. The removal of Total Dissolved Solids (TDS), Chloride (Cl~-) and Total Hardness (TH) are in the range of 94 - 96%, 90-95% and 96-99% respectively. This study was carried out at Common Effluent Treatment Plant (CETP), SIPCOT, Perundurai, Erode district.