木聚糖酶对废纸浆废水生化污泥脱水性能的影响  

Effect of Xylanase on Sludge Dewatering Performance of Recovered Pulp Wastewater

作　　者：赵登[1,2] 张安龙[1,2] 朱友胜[3] 刘怡[3] 

机构地区：[1]陕西科技大学轻工与能源学院,西安710021 [2]陕西省造纸技术及特种纸品开发重点实验室陕西科技大学,西安710021 [3]四川工商职业技术学院,都江堰611830

出　　处：《纸和造纸》2013年第11期64-67,共4页Paper and Paper Making

基　　金："十二五国家科技支撑计划项目(2011BAC11B04)";资助;陕西科技大学研究生创新基金资助

摘　　要：采用木聚糖酶处理废纸浆废水生化污泥,讨论其影响因素。通过单因素实验和正交实验得到最佳工艺条件:酶用量2.4 U·g-1,温度50℃,反应时间45 min,其处理后污泥的沉降性能得到很大程度的改善。红外光谱图和电镜扫描分析表明:经酶处理后污泥化学性质发生改变,细小颗粒污泥均匀分布,其污泥的结构紧密,易实现固液分离,从而提高了污泥脱水性能。The xylanase is applied in the treatment of biochemical sludge of recovered pulp wastewater and the influencing factors are discussed in this paper. Through the single factor experiment and orthogonal experiment to determine the optimal reaction conditions, the results show that： when dosage of enzyme is 2.4 U·g-1, the temperature is 50℃, the reaction time is 45 min, and the sludge settling properties has a large degree of improvement. Infrared spectrum and SEM analysis showed that xylanase treatment of biochemical sludge can make sludge chemical properties change and fine granular sludge uniformly distribute, then the compact sludge structure is easy to realize solid-liquid separation, thereby improving the dewatering performance of sludge.

关 键 词：木聚糖酶 生化污泥 沉降比 

分 类 号：X793[环境科学与工程—环境工程]