Textile wastewater treatment in a bench-scale anaerobic-biofilm anoxic-aerobic membrane bioreactor combined with nanofiltration

J Environ Sci Health A Tox Hazard Subst Environ Eng. 2011;46(13):1512-8. doi: 10.1080/10978526.2011.609078.

Abstract

This study evaluated the treatability of textile wastewaters in a bench-scale experimental system, comprising an anaerobic biofilter, an anoxic reactor and an aerobic membrane bioreactor (MBR). The MBR effluent was thereafter treated by a nanofiltration (NF) membrane. The proposed system was demonstrated to be effective in the treatment of the textile wastewater under the operating conditions applied in the study. The MBR system achieved a good COD (90-95%) removal; due to the presence of the anaerobic biofilter, also effective color removal was obtained (70%). The addition of the NF membrane allowed the further improvement in COD (50-80%), color (70-90%) and salt removal (60-70% as conductivity). In particular the NF treatment allowed the almost complete removal of the residual color and a reduction of the conductivity such as to achieve water quality suitable for reuse.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacteria, Anaerobic / metabolism*
  • Biofuels / analysis
  • Biological Oxygen Demand Analysis
  • Bioreactors*
  • Chromatography, Gas
  • Color
  • Electric Conductivity
  • Fatty Acids, Volatile / analysis
  • Filtration
  • Nanoparticles
  • Textiles*
  • Waste Disposal, Fluid / methods*
  • Water Purification / methods*

Substances

  • Biofuels
  • Fatty Acids, Volatile