Observations on changes in ultrasonically treated waste-activated sludge

被引：342
|
作者：
Chu, CP
Chang, BV
Liao, GS
Jean, DS
Lee, DJ [1 ]
机构：
[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan
[2] Soochow Univ, Dept Microbiol, Taipei 111, Taiwan
来源：
WATER RESEARCH | 2001年 / 35卷 / 04期
关键词：
ultrasound; sludge; pretreatment; microbial density; dewaterability; biodegradability;
D O I：
10.1016/S0043-1354(00)00338-9
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This work experimentally elucidates the effects of ultrasonic treatment on the physical, chemical, and biological characteristics of a waste-activated sludge. A critical ultrasonic power level exists above which, accompanied with the release of divalent cations from the sludge body, the floc structure effectively disintegrated, microbial level acceptably disinfected, and particulate organic compounds sufficiently transformed into soluble state. Both ultrasonic vibration and bulk temperature rise contribute to the treatment efficiency. Possible mechanisms of ultrasonic treatment are discussed. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1038 / 1046
页数：9
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