印染废水处理厂排水中有机物的荧光方法表征

发布时间：2018-01-08 11:09

本文关键词：印染废水处理厂排水中有机物的荧光方法表征　出处：《光谱学与光谱分析》2017年10期 　论文类型：期刊论文

【摘要】：我国苏南地区印染企业众多,废水排放量巨大,加强印染废水的处理排放管理势在必行。三维荧光光谱测量快速、灵敏,能够反映水中有机物组成,可以弥补化学需氧量等传统有机物指标评价水质的不足。采集了我国苏南某市5家运行良好、达标排放的印染废水处理厂的排水,进行了总有机碳、UV254和三维荧光光谱的测定,来表征其中的溶解性有机物。5家污水处理厂排水的单位总有机碳的UV254为1.42~4.29L·mg~(-1)·m~(-1),表明其有机物芳香化水平与城市污水处理排水接近。各个污水处理厂印染废水处理排水的三维荧光光谱有所差别,但主要都有两个荧光峰,其激发波长和发射波长分别位于230/340和275/320nm处,校正归一化后的荧光强度远高于城市污水处理排水,而腐殖化指数远低于城市污水处理排水,表明印染废水处理排水相比城市污水处理排水存在较大比例的非腐殖类芳香族化合物。通过测定周边印染企业常用染料的三维荧光光谱可以推测印染废水处理排水的荧光信号可能来自于残留的染料及其未完全降解的中间产物,可能会对水环境造成一定的危害。研究显示三维荧光光谱在显示水体有机物污染组成上具有一定优势。
[Abstract]:Many printing and dyeing enterprises in South of Jiangsu province of China, a huge amount of wastewater discharge, it is imperative to strengthen the management of printing and dyeing wastewater treatment emissions. The three-dimensional fluorescence spectra measurement of fast and sensitive, which can reflect the organic matter in water, can make up for lack of chemical oxygen demand and other traditional organic matter index evaluation of water quality. The acquisition in South of Jiangsu China in 5 home runs well discharge printing and dyeing wastewater treatment plant drainage, the total organic carbon, determination of UV254 and three-dimensional fluorescence spectra, to characterize the dissolved organic matter in wastewater treatment.5 total organic carbon plant drainage unit of UV254 1.42~4.29L mg~ (-1) - m~ (-1), showed that the aromatic organic matter the level of city sewage treatment and drainage. The three-dimensional fluorescence spectra of each sewage treatment plant wastewater treatment and drainage vary, but mainly have two peaks, the excitation and emission wavelengths were located at 230/ 340 and 275/320nm, corrected normalized fluorescence intensity is much higher than that of city sewage treatment and drainage, and the humification index is far lower than the city sewage treatment and drainage, non humic and aromatic compounds of printing and dyeing wastewater treatment compared with the city sewage treatment drainage drainage. Through a large proportion of the three-dimensional fluorescence spectra measured around the printing and dyeing enterprises commonly used dyes can be postulated intermediate the product of printing and dyeing wastewater treatment and drainage of fluorescence signal may come from the residual dye and not completely degraded, may cause certain harm to the water environment. Research shows that the three-dimensional fluorescence spectra indicated that organic matter has certain advantages in the composition of water pollution.

【作者单位】：江阴市环境监测站;清华大学环境模拟与污染控制国家重点联合实验室;
【基金】：国家水体污染控制与治理科技重大专项项目(2014ZX07305001) 国家自然科学基金项目(91334112) 清华大学自主科研项目(20131089252) 环境模拟与污染控制国家重点联合实验室专项经费(17Y01ESPCT)资助
【分类号】：X791
【正文快照】： 引　言　　印染废水属于难处理的工业废水之一,色度高、成分复杂、有机物含量高,含有具有致癌、致畸、致突变作用的芳香族类有机物。我国苏南地区经济发达,纺织印染是其支柱产业之一。为控制污水排放、改善地表水环境质量,苏南地区建成了许多污水处理厂,并进行了严格的监管,包

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