In this work

immobilized mycelial pellets were applied to decolorize several dyestuffs.Good results were obtained indicating the high decolorization ability of the pellets.The same pellets could be repeatedly used to treat Acid Orange 7 for at least 10 times and every time over 97% color removal was obtained within 24h.Good decolorization effect was also observed with 3 other dyestuffs.The presence of a co-substrate glucose was necessary for decolorization by mycelium pellets.In the continuous reactor

both Acid Orange solution and non-sterile dying waste water were treated by immobilized mycelial pellets. With dilution rate 0.0056h -1

aeration rate 1.1L·min -1

color removal rate of Acid Orange is 97%.With dilution rate 0.014h -1

aeration rate 1.4L·min -1

93.5% color reduction of dying waste water was obtained.No loss in decolorization ability of the mycelium was noted when the reactor was operated continuously for more than 5d.