| Since 1990s, people has paid more attention to the fact that white rot fungous can degrade POPs efficiently. It has been proved that white rot fungous is effective on decolorization and degradation for dyestuff wastewater.MBR is an innovative wastewater treatment technology, which combines membrane separation and bioreactor technology. MBR presents advantages such as high microbe load, prolonged microbe retention time, small footprint required, reduction in costs, reduced excess sludge production, easy reactor operation and control. According to these positive aspects, MBR has been applied to various wastewater treatments.In this thesis, the structure of the key intermediate, produced during the degradation of dyestuff, was investigated by using chemical and biochemical (key enzyme) methods, including modern instrumental technique. The effect of membrane-white rot fungous bioreactor on the degradation of dyestuff was discussed by analyzing the temporal and spatial variation of the key enzyme ACT. After two years' experiments, the conclusions were obtained as following:(1) The possibility of dyestuffs' degradation by P.C depends on their structures. In general, the dyestuff with simple molecule structure could degrade more easily. The degradation rate was quicker if the dyestuff contains easily degradable substituents. Under the pure culture condition, the four dyes including azo-benzene, HAB, ORANGE II and reactive brilliant red X-3B could be decolorized by P.C. ORANGE II and reactive brilliant red X-3b were decolorized over 90% in 72 hours, while the others over 80%.(2) P.C fungi had effective degradation to the azobenzene dyestuff. Satisfied results were obtained by regulating nitrogen source. Under the condition of no external carbon source and limited nitrogen (0.2g/l ammonium tartrate) , or no nitrogen, the dyestuff wastewater containing azobenzene could be decolorized by P.C fungi.(3) With or without culture medium, P.C fungi could decolorize ORANGE II...
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