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超声波预处理对污泥孔径分布的影响

发表时间:2013-04-30  浏览量:1041  下载量:306
全部作者: 赵芳,李栋,陈振乾
作者单位: 东南大学能源与环境学院
摘 要: 对超声波预处理后污泥孔隙结构进行显微观察,对比分析超声声能密度及处理时间对污泥内部孔径分布的影响。研究结果表明:超声波预处理可以有效改变污泥的孔隙结构,在相同的处理时间内,随着声能密度的增加,污泥内平均孔径尺寸逐渐增大。同时,在相同超声强度下,增加超声处理时间,污泥内部平均孔径也随之增大。当超声声能密度为0.8 W/mL,处理时间为7 min时,污泥达到最佳预处理效果。
关 键 词: 工程热物理;超声波预处理;孔径分布;污泥
Title: Effect of ultrasonic pretreatment on pore size distribution in sludge
Author: ZHAO Fang, LI Dong, CHEN Zhenqian
Organization: School of Energy and Environment, Southeast University
Abstract: The sludge pore structures after ultrasonic pretreatment were studied by optical microscopic and the effect of ultrasonic energy density and processing time on sludge internal aperture distribution was analyzed. The results indicated that the ultrasonic pretreatment could effectively change the sludge pore structure and the sludge inner average pore size gradually increased with the increasing of the energy density in the same processing time. Meanwhile, the sludge inner average pore size increased with the increasing of processing time in the same ultrasonic intensity. When the ultrasonic energy density was 0.8 W/mL and the processing time was 7 min, the sludge could obtain the best pretreatment effect.
Key words: engineering thermophysics; ultrasonic pretreatment; pore distribution; sludge
发表期数: 2013年4月第8期
引用格式: 赵芳,李栋,陈振乾. 超声波预处理对污泥孔径分布的影响[J]. 中国科技论文在线精品论文,2013,6(8):742-746.
 
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