摘要
测定了不同比臭氧消耗量条件下,印染废水生化出水中生化可降解溶解性有机碳(BDOC)在28 d内的变化过程,并对接种培养前后的三维荧光光谱进行了分析.结果表明,臭氧氧化能有效降低印染废水生化出水的色度和芳香度,明显提高可生化性.在比臭氧消耗量2.7 mg.mg-1条件下,预计臭氧氧化和生物滤池联用技术对DOC的去除率约为54%.另外,亲水性有机物对BDOC的贡献率与比臭氧消耗量呈正比关系.类腐殖和类色氨酸物质的荧光强度在一定程度上反映了生化难降解有机物的含量.
In this work,evolution of biological dissolved organic carbon（BDOC） during 28 d at different ozone consumption per initial dissolved organic carbon（DOC） in biotreated textile wastewater effluents was investigated first.Then the difference of the three-dimensional excitation-emission matrix fluorescence（EEMs） between samples before and after incubation was analyzed.Results showed that ozonation had a high efficacy in removing color and aromatic carbon contents and enhancing the biodegradability.With 2.7 mg · mg-1,DOC removal rate of ozonation coupled with biofiltration was estimated to be around 54%.In addition,the hydrophilic fraction in BDOC was linear with ozone consumption.Fluorescence intensity of humic-like and tryptophan-like matters was considered as an indicator for the content of nonbiodegradable organic matter.
出处
《环境化学》
CAS
CSCD
北大核心
2012年第4期511-515,共5页
Environmental Chemistry
基金
国家高技术研究发展计划(863)重点项目(2009AA063904)资助
关键词
印染废水生化出水
臭氧氧化
生化可降解溶解性有机碳
三维荧光光谱
biotreated textile wastewater effluents
ozonation
biodegradable dissolved organic carbon
three-dimensional fluorescence spectrum
