A master thesis from Aalborg University
Treatment of textile wastewater by MBR system
Author(s)
Term
4. term
Education
Publication year
2012
Submitted on
2012-05-30
Pages
47 pages
Abstract
The aim of this thesis is to efficiently remove color from textile wastewater using MBR technology and Advanced Oxidation Processes (AOP). MBR technology is of great interest because of its capability to provide a stable and high quality treatment. Fenton's reaction is chosen to be used in the oxidation treatment, since the treatment previously has shown to effectively degrade dyes. A lab scale MBR system, located at Maribor University, Slovenia was used during this thesis. The MBR system was constructed as an external submerged MBR system. The Fenton's reaction was used to treat both the wastewater and the permeate from the MBR system. The absorbance was measured in order to evaluate the color removal of the MBR system. A clear reduction in the absorbance was observed in the permeate and a highly visible color removal was obtained. The results showed an efficient removal of chemical oxygen demand, ammonium, nitrate, nitrite and total nitrogen. The treatment with Fenton's reaction on wastewater and permeate showed efficient color removal both before and after MBR treatment. It is concluded that MBR treatment is an efficient method for the degradation of dyes in textile wastewater. With optimal operation conditions, a high removal percent of color and nutrients can be obtained. It is concluded that the use of AOP can further improve the quality of the permeate and increase the probability of reusing the water in the dyeing process.
Documents
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