Bleaching method for preparing high quality low pollution bamboo wood dissolving slurry

The invention relates to a bleaching method for preparing a high quality low pollution bamboo wood dissolving slurry, which comprises the following steps: 1) removing parenchyma cells, employing a sieve method or a slurry washing method for removing parenchyma cells; 2) performing an oxidation reaction to remove a transition metal compound, removing boiled residual lignin in the unbleached slurry, performing ozone bleaching on washed slurry; 3) refining alkali in a reinforced mode; 4) bleaching chlorine dioxide; and 5) processing by acidifying at high temperature. According to the invention, delignification step by step, dynamic viscosity adjusting, whiteness enhancement, fine fiber generation reduction, and reaction capability activation are carried out on unbleached bamboo wood dissolving slurry, on the basis of increasing fiber strength, whiteness and filtering quality, the pollution load of the bleaching waste water is reduced, the bamboo wood dissolving slurry with high product quality and low environmen