Color removal from textile wastewater using a pilot-scale dual-st | 54399
Journal of Chromatography & Separation Techniques

Journal of Chromatography & Separation Techniques
Open Access

ISSN: 2157-7064

Color removal from textile wastewater using a pilot-scale dual-stage MBR and subsequent RO system

2nd International Conference and Expo on Separation Techniques

September 26-28, 2016 Valencia, Spain

D De Jager, M S Sheldon and W Edwards

Cape Peninsula University of Technology, South Africa
Atl-Hydro, South Africa

Posters & Accepted Abstracts: J Chromatogr Sep Tech

Abstract :

The textile industry not only utilizes large quantities of water, but also produces large quantities of wastewater. Limited information has been published on textile wastewater treatment, for re-use in South Africa (SA), with treatment processes focusing on conventional wastewater treatment methods. A major concern in textile wastewater treatment is the release of highly colored wastewaters polluted with dyes, textile auxiliaries and other chemicals into the environment that are generally toxic and resistant to biological treatment methods. A necessity therefore exists for an effective treatment method capable of removing both the strong color and the toxic organic compounds from textile wastewater. A pilot-scale dual-stage membrane bioreactor (dsMBR) incorporating two ultrafiltration (UF) side stream membrane modules was designed, constructed, operated and evaluated on-site, at a textile company for treating textile wastewater. The wastewater stream was characterized by a color range of 195��?2070 ADMI units and a chemical oxygen demand (COD) of between 728 and 1033 mg/L. A consistent reduction in the color of the incoming wastewater was evident in the treatment stages. The residual color and remaining salt in the UF permeate was treated with reverse osmosis (RO). The color in the wastewater was reduced from an average of 660 ADMI units to~12 ADMI units in the RO permeate, a lower ADMI compared to the potable water (~17 ADMI units) used on-site by the textile company.

Biography :