自然科学版
陕西师范大学学报(自然科学版)
化学与材料科学
超声/臭氧联合技术处理次甲基蓝废水
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高丽,马红竹,王博
(陕西师范大学 化学与材料科学学院, 陕西 西安 710062)
高丽,女,硕士,主要研究方向为污水处理.*通信作者: 马红竹,女,教授. E-mail:hzmachem@snnu.edu.cn
摘要:
在不同的pH条件下,利用单独超声辐射、单独臭氧氧化以及超声臭氧联合技术处理次甲基蓝废水,探讨了在不同初始pH值(3,6.4,10)时,超声辐射对臭氧的不同强化作用.结果表明,单独超声辐射对次甲基蓝废水脱色无明显效果,但它与臭氧氧化结合可极大地提高臭氧氧化次甲基蓝的能力,且增强因子由大到小顺序为:pH=3 (Re=16.1%)>pH=6.4 (Re=4.0%)>pH=10 (Re=0.84%).
关键词:
脱色; 次甲基蓝; 超声; 臭氧; 增强因子
收稿日期:
2009-11-11
中图分类号:
X7031
文献标识码:
A
文章编号:
1672-4291(2010)06-0057-03
基金项目:
中央高校基本科研业务费专项基金资助项目(GK200901023).
Doi:
Degradation of methylene blue wastewater by ozonation combined with ultrasound
GAO Li, MA Hong-zhu*, WANG Bo
(College of Chemistry and Materials Science, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
The decoloration of methylene blue in aqueous solution by single ultrasonic irradiation, single ozonation and ozonation combined with ultrasonic irradiation at different pH conditions were carried out. The effects of ultrasonic irradiation on the ozonation at three different pH levels (3, 6.4 and 10) were investigated. The results indicated that single ultrasonic irradiation has no effect of the methylene blue degradation nearly, but ultrasound can greatly enhance the degradation by ozonation, and the increment order is as follows: pH=3 (Re=161%)>pH=64 (Re=4.0%)>pH=10 (Re=0.84%).
KeyWords:
Decoloration; Methylene blue; Sonolysis; Ozonation; Increment order