北京科技大学学报2011，Vol.33Issue(8)：916-921,6.
臭氧氧化法降解浮选废水中残余BK809
Degradation of residual BK809 in flotation wastewater by ozonation
米丽平 1孙春宝 1徐涛 1赵留成 1王彪 1罗盛康1
作者信息
- 1. 北京科技大学土木与环境工程学院,北京100083
- 折叠
摘要
Abstract
Ozonation was used to degrade residual BK809 in flotation wastewater and the degraded products in different stages were identified and quantified by gas chromatography-mass spectrometry（GC-MS）.The results showed that the COD removal rate of 68.68% could achieve at an ozone flow rate of 300mg·h-1 for 20min and pH 9-11.It was indicated from GC-MS analysis that BK809 was firstly oxidized to azobenzene and then converted to nitrobenzene.With the deepening of ozonation,the benzene was broken and further decomposed into C15-C25 carbon-chain alkanes and gaseous substances,including nitrogen oxides and carbon oxides.Finally the residual mass percentage of total organic compounds（TOC） reduced from 100.00% to 17.18%.Meantime,the chroma of the wastewater increased from 5.02 to 471.71 and then decreased to 28.75;in macroscopic view,the color of the wastewater turned from colorless to brown,and then from brown to milky.关键词
浮选/废水处理/臭氧氧化/降解Key words
flotation/wastewater treatment/ozonation/degradation分类
资源环境引用本文复制引用
米丽平,孙春宝,徐涛,赵留成,王彪,罗盛康..臭氧氧化法降解浮选废水中残余BK809[J].北京科技大学学报,2011,33(8):916-921,6.
