Combination of Ozonation and Biological Treatment of Waste Water Containing Biorefractory Chloro- and Nitroaromatic Pollutatns

摘要

Synthetic waste water containing differnet mixtures of chloro-, nitro-, odichloro, three chloro-nitro-, three dinitro-, 2,4-dichloro-1-nitro and 1-chloro-2,4-dinitro benzenes was treated by a combiantion of chemcial oxidation with ozone in a bubble column and biological degradation usign a consortium of micro-organisms fixed in a biofilm fluidized bed reactor. The highly pH dependent ozonation reactions were investigated here only at pH=7 which is most suitable in a recycle reactor combiantion system. In continuous experiemnts all compounds could be eliminated to less than 0.5