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Membrane Water Treatment
  Volume 11, Number 5, September 2020, pages 333-344
DOI: http://dx.doi.org/10.12989/mwt.2020.11.5.333
 


Development of the ultra/nano filtration system for textile industry wastewater treatment
Hamidreza Rashidi, Nik Meriam Nik Sulaiman, Nur Awanis Hashim, Lori Bradford, Hashem Asgharnejad and Maryam Madani Larijani

 
Abstract
    Advances in industrial development and waste management over several decades have reduced many of the impacts that previously affected ecosystems, however, there are still processes which discharge hazardous materials into environments. Among industries that produce industrial wastewaters, textile manufacturing processes play a noticeable role. This study was conducted to test a novel continuous combined commercial membrane treatment using polyvinylidene fluoride (PVDF), ultrafiltration (UF), and polyamide (PA) nanofiltration (NF) membranes for textile wastewater treatment. The synthetic textile wastewater used in this study contained sodium silicate, wax, and five various reactive dyes. The results indicate that the removal efficiency for physical particles (wax and resin) was 95% through the UF membrane under optimum conditions. Applying UF and NF hybrid treatment resulted in total effective removal of dye from all synthetic samples. The efficiency of sodium silicate removal was measured to be between 2.5 to 4.5% and 13 to 16% for UF and NF, respectively. The chemical oxygen demand in all samples was reduced by more than 85% after treatment by NF.
 
Key Words
    textile; wastewater treatment; dye removal; nanofiltration; ultrafiltration
 
Address
Hamidreza Rashidi, Lori Bradford: School of Environment and Sustainability, University of Saskatchewan, Saskatoon, Canada
Nik Meriam Nik Sulaiman: Nik Meriam Nik Sulaiman, Nur Awanis Hashim
Hashem Asgharnejad:School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
Maryam Madani Larijani: Department of Community Health and Epidemiology, University of Saskatchewan, Saskatoon, Canada


 

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