Effect of liquid phase aeration on performance of rotating biodisc contactor treating saline wastewater

Kargi F., Uygur A.

ENVIRONMENTAL TECHNOLOGY, cilt.18, sa.6, ss.623-630, 1997 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Sayı: 6
  • Basım Tarihi: 1997
  • Doi Numarası: 10.1080/09593331808616580
  • Dergi Adı: ENVIRONMENTAL TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.623-630
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

A rotating biodisc contactor (RBC) operating continuously was used for biological treatment of saline wastewater. Effect of liquid phase aeration and salt concentration on COD removal efficiency and rate were investigated. A synthetic wastewater composed of diluted molasses, urea, KH2PO4, MgSO4 and various concentrations of salt (1-5% NaCl) was used throughout the study. A fifty percent mixture of salt tolerant Halobacter halobium and activated sludge culture was used as inoculum. Liquid phase aeration improved both COD removal rate and efficiency significantly as compared to unaerated liquid phase. A mathematical model describing the effects of COD and salt concentrations on system's performance was developed. The model parameters were determined by using the experimental data for both cases.