高频超声降解造纸黑液的研究
收稿日期: 2004-03-25
网络出版日期: 2010-10-01
Study on the degradation of black liquor by using high-frequency ultrasound
Received date: 2004-03-25
Online published: 2010-10-01
吴晓辉, 周珊, 陆晓华 . 高频超声降解造纸黑液的研究[J]. 工业水处理, 2004 , 24(10) : 36 -38 . DOI: 10.11894/1005-829x.2004.24(10).36
The black liquor (taken from Wuhan Chenming Papermaking Co., Ltd.) was sonicated by 1 040 kHz ultrasound (US). The effects of US frequency, dissolved gas, ionic strength and coexist catalyst on ultrasonic degradation efficiency of black liquor have been studied. The results are as follow:(1)Compared with the low frequency US, high frequency US has stronger capability of the degradation of organic contaminants. In the first 30 min, the removal ratio of CODCr is 20.8%;(2)High-molecule contaminants are easier to be degraded with the dissolved gas coexisting;(3)Addition of appropriate NaCl enhanced the degradation efficiency of black liquor; (4)Coexistent TiO2 increases the ultrasonic degradation efficiency.
Key words： high-frequency ultrasound; black liquor; degradation; wastewater treatment
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