CEH bleaching process is a main traditional bleaching technology used in our county. The wastewater discharged to the environment not only contains high duty of COD and BOD, but also carcinogens materials, such as chlorphynols etc. The white-rot fungus can not only degrade lignin and its derivatives with the released enzyme, but change inorganic chloride into chlorine and CO2 and destroy color group and structure. Laccase is a ligninolytic enzyme that uses O2 as the electron receptor and has high re...