Application research on kraft wood pulp bleaching with xylanase pretreatment
木聚糖酶在硫酸盐木浆辅助漂白中的应用研究

Based on the practical operation data, the analysis of the pulp quality, the main material consumption and the wastewater pollutants with or without xylanase pretreatment in one kraft wood pulp mill was done. The results showed that the pulp quality could be significantly improved, the per unit consumption of wood, chlorine dioxide and energy could be sharply reduced and the pollutant loads of the bleaching wastewater could be cut down with xylanase pretreatment under the unchanging operation parameters. It is a practical bleaching process which could decrease the pulp production cost and preserve the water environment.