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Dantas, Renato F.; Contreras, Sandra; Sans, Carme; Esplugas, Santiago
Ozone: science & engineering, 11/2008, Letnik: 30, Številka: 6Journal Article
The aim of this work was to assess the mineralization of 100 and 200 mg L −1 4-chlorophenol (4-CP) solutions by ozonation-biological treatment. The results show that starting from a 4-CP initial concentration from 100 to 500 mg L −1 and using an ozone flow rate of 5.44 and 7.57 g h −1 , 4-CP was completely removed. A kinetic constant around 9·10 −2 min −1 was calculated for the ozone direct attack. The biodegradability (BOD 5 /COD) of the pre-ozonated solutions increased from 0 until a range between 0.2-0.37. The combination of the ozonation and aerobic biological treatment in an aerobic sequencing batch biofilm reactor (SBBR) gave an abatement of more than 90% of the initial TOC.
