冷冻调质对造纸污泥沉降及脱水性能的影响  

Effect of Freeze-thaw Condition on Paper Mill Sludge Sedimentation and Dewatering

作　　者：吴春笃[1] 李继容[1] 解清杰[1] 刘兴[1] 

机构地区：[1]江苏大学环境学院,江苏镇江212013

出　　处：《纸和造纸》2010年第4期59-61,共3页Paper and Paper Making

基　　金：国家"十一五"重大水专项资助项目(2008ZX07317-001);江苏省科技支撑(社发)计划资助项目(BE2008615)

摘　　要：研究冷冻调质对造纸污泥沉降及脱水性能的影响。试验结果表明,冷冻调质可加快造纸污泥的沉降速度,有效提高造纸污泥的脱水效率。当冷冻调质时间为9h时,造纸污泥在35min内的沉降率达到80%以上,在45～50kPa真空度下抽滤10min后泥饼的含水率约为61%,比没有经过冷冻调质的污泥泥饼含水率低17%。This paper studied on efficiency of paper mill sludge sedimentation and dewatering by freeze-thaw condition. The results showed that, freeze-thaw condition could improve sedimentation rate of paper mill sludge and efficiency of paper mill sludge dewatering effectively. Under the time of freeze is 9 hours, the sedimentation rate of paper sludge is more than 80% in 35min, the moisture content of mud cake reduced to about 61% after 10min air pump filtration in 45-50kPa vacuum, that is 17% lower than the mud cake which didn＇t threatened by freeze-thaw.

关 键 词：冷冻调质 脱水性能 沉降性能 造纸污泥 

分 类 号：X703[环境科学与工程—环境工程]