不同水源的再生水中溶解性有机物的特性  

Characteristic of Dissolved Organic Matter of Reclaimed Water from Different Sources

作　　者：刘健 程丽华[1] 王明月 衡特 涂杰 毕学军[1] LIU Jian;CHENG Li-hua;WANG Ming-yue;HENG Te;TU Jie;BI Xue-jun(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266033,China)

机构地区：[1]青岛理工大学环境与市政工程学院

出　　处：《中国给水排水》2019年第21期92-96,共5页China Water & Wastewater

基　　金：国家重点研发计划项目(2017YFC0403404)

摘　　要：以经分质污水处理系统处理后的黑水(黑水源再生水)、处理后的灰水(灰水源再生水)以及传统城市污水处理厂三级出水(综合污水源再生水)作为研究对象,分析3种来源的污水经处理后得到的再生水中UV254、比紫外吸光度值(SUVA)、溶解性有机物(DOM)分子质量分布以及三维荧光光谱(EEMs)的特征,确定了不同水源再生水的有机物特性。结果表明,3种来源再生水的UV254和SUVA值从小到大均依次为灰水源再生水<综合污水源再生水<黑水源再生水,说明灰水源再生水中含有的不饱和有机物、芳香性和小分子有机物的含量最低,黑水源再生水中上述物质含量最高。分子质量分布结果表明,3种来源的再生水中残余的有机物主要为分子质量<10 ku的有机物,且以分子质量<1 ku的有机物为主。EEMs分析结果表明,3种再生水均有明显的腐殖酸峰,其中黑水源再生水的荧光强度最大,灰水源再生水的荧光强度最小。荧光指数、腐殖化指数及自生源指标值均显示3种再生水的DOM主要由微生物的活动产生。Characteristics of dissolved organic matter(DOM)of three kinds of reclaimed water were determined by analyzing the feature of UV254,specific UV absorbance(SUVA),molecular weight(MW)distribution of DOM and three-dimensional fluorescence spectra(EEMs).The reclaimed water was originated from the effluent of black water treatment(reclaimed black water),the grey water treatment(reclaimed grey water)and the tertiary effluent of traditional domestic wastewater treatment plant(reclaimed synthetic wastewater).UV254 and SUVA of the three reclaimed water from small to large was reclaimed grey water,reclaimed synthetic wastewater and reclaimed black water,which indicated that the content of unsaturated organic matter,aromatic and small molecular organic matter in the reclaimed grey water was the lowest and these matters in the reclaimed black water was the highest.The result of MW distribution showed that the residual organic matters in the three reclaimed water were mainly organics with MW less than 10 ku and the organics with MW less than 1 ku accounted for the largest part.Results of EEMs analysis showed that all three kinds of reclaimed water had obvious humic acid peak.Among them,the fluorescence intensity of reclaimed water from the black water was the highest,and that of reclaimed water from the gray water was the lowest.Fluorescence index,humification index and autogenic index all showed that DOM of the three reclaimed water samples was mainly produced by microbial activities.

关 键 词：再生水 黑水 灰水 综合污水 溶解性有机物 分子质量分布 

分 类 号：TU992[建筑科学—市政工程]