Removal of Pesticides by a Combined Ozonation/Attached Biomass Process Sequence
- 1 August 2005
- journal article
- research article
- Published by Informa UK Limited in Ozone: Science & Engineering
- Vol. 27 (4), 327-331
- https://doi.org/10.1080/01919510591008362
Abstract
Different combinations of ozonation and biological treatments were tested on an industrial effluent containing high pesticide concentrations. Ozonation was performed in 450 L columns at 1.5 h HRT each. Biological treatment was carried out in a submerged filter (BIOFOR). Ozone was effective in removing herbicides but dosages up to 1000 mg L−1 were needed. The improved biodegradability of the organic compounds after pre-ozonation was demonstrated by Oxygen Uptake Rates (OUR) tests and by the efficiency of biological treatment towards COD, and pesticides. The Italian discharge limit of 50 ppb total pesticides was achieved by combining pre-ozonation, biological treatment, and post- ozonation.Keywords
This publication has 5 references indexed in Scilit:
- Combined Biological Treatment/Ozonation of Wastewaters for the Mineralisation of Non-Biodegradable Naphthalene-1,5-Disulphonic AcidActa Biotechnologica, 2003
- Pesticide chemical oxidation: state-of-the-artWater Research, 2000
- Processes for the removal of recalcitrant organics from industrial wastewatersWater Science & Technology, 1997
- Atrazine Removal Using Ozone and GAC: a Pilot Plant StudyOzone: Science & Engineering, 1993
- Removal of Atrazine From Drinking Water by OzonationJournal AWWA, 1992