污水处理工艺过程中有机物特性研究  

A STUDY ON THE CHARACTERISTICS OF ORGANIC MATTER IN THE PROCESS OF WASTEWATER TREATMENT

作　　者：任武昂[1] 金鹏康[1] 石彦丽 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《水处理技术》2014年第11期43-47,共5页Technology of Water Treatment

基　　金：国家自然科学基金(51178376);教育部新世纪优秀人才计划(NCET-12-1043);陕西省污水处理与资源化创新团队

摘　　要：利用DAX-8大孔树脂在不同条件下的选择吸附性,采用快捷方法间接测定城市污水中腐殖类物质(AHS)的含量,并应用三维荧光和紫外光谱技术对污水处理工艺中溶解性有机物(DOM)的特性进行分析。结果表明,经过生物处理后污水中DOM总量及AHS去除率分别为93%和89%,TOC中AHS的质量分数由进水的38.89%增加到出水的61.57%。污水中DOM经厌氧生物处理后类蛋白类(A、B荧光峰)和类富里酸(C荧光峰)峰强分别削减60.7%、59.2%、15.7%,出水中易生物降解的蛋白峰A、B消失,而难生物降解的类富里酸峰C荧光强度仅比进水减小25%。结合有机物的紫外特性可以看出,微生物对有机物的去除有着至关重要的作用,经生物处理后DOM的共轭不饱和双键或芳香性有机碳相对含量增多,腐殖化程度增加。Using the selective adsorption of macroporous resin under different conditions, the content of like-humic acid had been determined indirectly by a rapid method in urban wastewater. The characteristics of dissolved organic matter（DOM） in the process of wastewater treatment were conducted by three-dimensional fluorescence spectrum and ultraviolet spectrum. The results show that after biological treatment of wastewater, the removal rate of total DOM and like-humic acid were 93% and 89% respectively. Humic-like substances accounted for the percentage of total TOC increased from 38.89% in influent to 61.57% in effluent. After anaerobic biological treatment, the fluorescence intensity of protein-like fluorescence peak（peak A and B） and likefulic acids fluorescence peak（peak C） in wastewater was decreased by 60.7%, 59.2% and 15.7%, respectively. The peak A and B which were stand for biodegradable organic matter disappeared in effluent, while the intensity of peak C which was stand for like-fulic decreased 25% only in effluent comparing to influent. Combined with ultraviolet characteristics of DOM, it can be obtained that microorganisms play a vital role in the removal of DOM. After biological treatment, the conjugated unsaturated double bond or the relative contents of aromatic carbon in DOM increased so that the degree of humification of DOM increased as well.

关 键 词：城市污水 溶解性有机物 腐殖类物质 三维荧光光谱 紫外特征 

分 类 号：X703.1[环境科学与工程—环境工程]