摘要
基于三维荧光平行因子分析(PARAFAC analysis),对污水处理厂二级出水溶解性有机物(DOM)在不同臭氧投加量下的反应特性进行了研究,PARAFAC分析确定了污水厂二级出水中共有3个荧光组分,其中组分1为蛋白质类物质,组分2和3为腐殖质类物质.当臭氧为0.98mg O3/mg TOC时,3个组分中的荧光基团均可以和臭氧发生比较彻底的反应.线性回归分析表明,臭氧与组分1和组分2中荧光基团的反应可以很好地解释臭氧化对色度、UV254、UV280的去除.HPLC-SEC的结果进一步验证了PARAFAC的分析结果.同时,对于蛋白类物质组分1而言,臭氧主要和其中小分子物质的荧光基团发生反应,与其大分子物质几乎不发生反应.
The characteristics of DOM in secondary effluent at different ozone dosages were investigated based on EEM parallel factor analysis. There were three fluorescent components in secondary effluent. Component 1was protein-like substances and the other two components were humic-like substances. The three components will react with ozone intensively at ozone dosage 0.98 mg O3/mg TOC. Linear regression analysis showed that the reaction between ozone and component 1and 2could account for the removal of color,UV254 and UV280. In addition,the HPLC-SEC analysis confirmed the PARAFAC analysis results and revealed that ozone will react preferentially with small molecular weight substances in component 1. However,there was little reaction between ozone and high molecular weight substances in component 1.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2015年第2期427-433,共7页
China Environmental Science
基金
国家自然科学基金资助项目(51378414,51178376)
教育部新世纪优秀人才支持计划(NCET-12-1043)
陕西省污水处理与资源化创新团队(IRT 2013KCT-13)
关键词
二级出水
臭氧氧化
平行因子分析
荧光特性
secondary effluent
ozonation
parallel factor analysis
fluorescence characteristics
