PROCESS FOR PRODUCTION OF BLEACHED PULP

Provided is a process for producing bleached pulp, including subjecting unbleached pulp, which is obtained by cooking a lignocellulose substance, to alkali-oxygen bleaching treatment and then subjecting the alkali-oxygen bleached pulp to chlorine-free bleaching treatment including chlorine dioxide treatment, wherein in at least one chlorine dioxide treatment stage in which the chlorine dioxide treatment is performed, monopersulfuric acid is used in combination. The amount of chlorine dioxide to be used is reduced and the colour reversion resistance of the bleached pulp is improved by this process. 提供一种漂白纸浆的制造方法，该方法包括：对通过蒸煮木质纤维素物质得到的未漂白纸浆进行氧碱漂白处理，接着进行包括二氧化氯处理的无氯漂白处理，其中，通过在实施该二氧化氯处理的至少一个二氧化氯处理段组合使用单过硫酸，二氧化氯的用量减少，改善了漂白纸浆的褪色性。