Treatment of Textile Effluents by Membrane Processes for Reuse

• Main Authors: Ming-Chang Huang, 黃明樟
• Other Authors: Shyh-Fang Kang
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/23681357224462511094

碩士 === 淡江大學 === 水資源及環境工程學系 === 89 === The textile effluents were employed to investigate the characteristics and treatability by Fenton oxidation combined with RO membrane process for reuse. Preliminary investigation has shown that the water quality requirements of conductivity and hardness in textile manufacture water for reuse were 300-700 µs/cm and 3-50 mg/L as CaCO3, respectively. However, the characteristics of textile effluents have indicated that the conductivity and hardness range were 2640-5000 µs/cm and 25-64.6 mg/L as CaCO3, respectively. This result demonstrates the necessity for further treatment for textile effluent to reuse. In this study, the Fenton oxidation and RO membrane process were selected to remove organics matters (expressed by DOC) and inorganic salts (expressed by conductivity) in textile effluents. The results of this research have shown the removal of conductivity and hardness for RO membrane process better than UF and NF. Moreover, the pre-treatment of textile effluent by Fenton process efficiently reduced organic matters concentration, dropped SDI to below 5 and resulted in better performance for RO membrane processes. As RO operation pressure kept 50-100 psi for RO membrane Single Element Bench-Scale Test (SEBST), the removal efficiency of conductivity and hardness was over 95% and increased as the operation pressure increased. Therefore, the combined Fenton oxidation and RO membrane process to treat textile effluent are very effective and capable of elevating water quality to the reuse of the textile industry.