单频和双频复合超声对水溶液中腐殖酸的降解

doi:10.3969/j.issn.0438-1157.2014.09.054

化工学报 ›› 2014, Vol. 65 ›› Issue (9): 3700-3704.DOI: 10.3969/j.issn.0438-1157.2014.09.054

单频和双频复合超声对水溶液中腐殖酸的降解

赵荔, 杨艳玲, 李星, 周志伟, 张洋, 马长红

北京工业大学北京市水质科学与水环境恢复工程重点实验室, 北京 100124

收稿日期:2014-01-13 修回日期:2014-03-17 出版日期:2014-09-05 发布日期:2014-09-05
通讯作者: 杨艳玲
基金资助:
国家水体污染控制与治理科技重大专项（2012ZX07404-003）；国家自然科学基金项目（51278005）；北京市自然科学基金项目（8132007）；研究生科技基金（ykj-2012-8771）。

Degradation of humic acid in water by single- and dual-frequency ultrasound methods

ZHAO Li, YANG Yanling, LI Xing, ZHOU Zhiwei, ZHANG Yang, MA Changhong

Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

Received:2014-01-13 Revised:2014-03-17 Online:2014-09-05 Published:2014-09-05
Supported by:
supported by the National Natural Science Foundation of China (51278005), the Beijing Natural Science Foundation (8132007) and the Post-Graduate Sci-Tech Innovation Foundation (ykj-2012-8771).

摘要/Abstract

摘要： 针对模拟水样中的腐殖酸，采用静态实验研究了在低声能密度0.028 W·ml^-1条件下，单频超声（68、80、100、125和160 kHz）和双频复合超声（X-Y轴轴向正交超声：80/125 kHz和80/160 kHz；X-X轴轴向平行超声：68/100 kHz和125/160 kHz）在不同时间下对溶解性有机碳（DOC）和三卤甲烷前体物（THMFP）的去除效果。结果表明：在同一声能密度下，低频（68和80 kHz）对DOC和THMFP的去除效果比高频（100、125和160 kHz）下的去除效果好，双频复合超声的去除效果均优于单频超声，且X-Y轴轴向正交超声降解效能均优于X-X轴轴向平行超声。双频复合超声的X-Y轴轴向正交组合80/160 kHz超声25 min去除效果最好，其中DOC和THMFP去除率分别可达到32.6%和66.6%。

关键词: 腐殖酸, 降解, 单频超声, 双频复合超声, 三卤甲烷前体物, 水溶液

Abstract: To understand the degradation of humic acid in simulated water a series of static experiments assisted with ultrasound were done at various energy density of ultrasound produced by both single-frequency (68 kHz, 80 kHz, 100 kHz, 125 kHz and 160 kHz) and dual-frequency (X-Y axial orthogonal 80/125 kHz and 80/160 kHz and X-X axis parallel 68/100 kHz and 125/160 kHz) ultrasound irradiation system. The degradation of dissolved organic carbon (DOC) and trihalomathame precursors (THMFP) were measured. The main results obtained are as follows: for the same energy density of sound, the degradation efficiency is better for low frequency (68 kHz and 80 kHz) than for high frequency ultrasound (100 kHz, 125 kHz, and 160 kHz), dual-frequency is superior to single-frequency, and X-Y axial orthogonal ultrasound excels X-X axis parallel. The best result for degradation of COD and THMFP is obtained in 25 min by using X-Y axial orthogonal combination of 80/160 kHz ultrasound, and is 32.6% and 66.6% respectively.

Key words: humic acid, degradation, single-frequency ultrasound, dual-frequency ultrasound, THMFP, aqueous solution

中图分类号:

赵荔, 杨艳玲, 李星, 周志伟, 张洋, 马长红. 单频和双频复合超声对水溶液中腐殖酸的降解[J]. 化工学报, 2014, 65(9): 3700-3704.

ZHAO Li, YANG Yanling, LI Xing, ZHOU Zhiwei, ZHANG Yang, MA Changhong. Degradation of humic acid in water by single- and dual-frequency ultrasound methods[J]. CIESC Journal, 2014, 65(9): 3700-3704.

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单频和双频复合超声对水溶液中腐殖酸的降解

Degradation of humic acid in water by single- and dual-frequency ultrasound methods

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