Application of anaerobic-aerobic sequential treatment system to real textile wastewater for color and COD removal

Kapdan İ., Alparslan S.

ENZYME AND MICROBIAL TECHNOLOGY, sa.2-3, ss.273-279, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.enzmictec.2004.08.040
  • Dergi Adı: ENZYME AND MICROBIAL TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.273-279
  • Anahtar Kelimeler: anaerobic-aerobic, decolorization, biological treatment, textile wastewater, DECOLORIZATION, AZO, DYES, BIODEGRADATION, REDUCTION, EFFLUENT
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

A sequential anaerobic packed column reactor and an activated sludge unit was operated continuously for treatment of a textile industry wastewater, in Izmir, Turkey. Metal sponges were used as support material in anaerobic unit and pre-activated textile dyestuff biodegrading PDW facultative anaerobic bacterial culture was immobilized on the support particles. Effects of hydraulic retention times in anaerobic unit ((theta(Hanaerobic) = 12-72 h) and initial COD concentration (COD0 = 3000 +/- 200mg/L and 800 +/- 100mg/L) at theta(Hanaerobic) = 24 h on color and COD removal performance of the system were investigated. The results indicated that over 85% decolorization and about 90%, COD removal efficiency can be obtained up to theta(Hanaerobic) = 48 h but higher retention times causes decreasing in decolorization efficiency. Operating the system with real wastewater without adding any nutrients at theta(Hanaerobic) = 24 h resulted in over 60% improvement in color removal in studied wastewater compared to existing treatment plant. (C) 2004 Elsevier Inc. All rights reserved.