Ozonation of nonbiodegradable organics in tannery wastewater


Dogruel S. , Genceli E. , Babuna F. F. , ORHON D.

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, cilt.39, ss.1705-1715, 2004 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 39 Konu: 7
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1081/ese-120037871
  • Dergi Adı: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
  • Sayfa Sayıları: ss.1705-1715

Özet

The study explores the impact of ozonation on the fate of different soluble COD fractions in the tannery wastewater at different phases during the course of biological treatment, in order to identify the phase where ozonation is likely to generate the maximum beneficial effect on biological treatability. Samples from the biological treatment influent and from the mixed liquor at periods significant for the fate of COD fractions have been ozonated. Ozone treatment at the phase where the readily biodegradable COD component was biologically depleted is determined as the most promising alternative among others, since the highest COD removal efficiencies are achieved even with low feeding time of 5 min at the selected ozone flow-rate of 42.8 mg/min. The merit of ozonation at this stage in the formation of simpler more biodegradable compounds deserves further attention.