Some unoptimized operation in current ONP deinking technology such as high alkalinity and addition of perox ide are discussed .The latest research results in the aspects discussed are intr oduced.

• 高碱度和添加过氧化氢是现行碎浆工段的特点，笔者就其优劣性做了分析，并报道了针对现行脱墨过程中存在的碱性泛黄/返黄问题进行的一些最新研究结果。