石化综合废水及其特征污染物的三维荧光光谱特性研究

发布时间：2018-05-07 07:58

本文选题：石化废水 + 三维荧光　；参考：《兰州交通大学》2017年硕士论文

【摘要】：本研究采用树脂分离以及超滤分级对分别对两种不同石化综合废水(炼化废水和炼油废水)中不同类型有机污染物组分进行了分离,结合平行因子算法(PARAFAC),对原水和各分离组分三维荧光光谱的荧光信息进行了解析。同时对石化综合废水中主要特征污染物进行了定性分析,研究了废水中主要特征污染物与综合废水荧光特性之间的关系。沿石化综合污水处理厂污、废水处理流程,炼化和炼油废水的三维荧光光谱的总荧光强度均呈减弱趋势;两种废水在低激发波段色氨酸区的特征荧光峰均位于λех/еm=230/340 nm处,炼化与炼油废水的该特征峰荧光强度去除率分别为50%与54%;低激发类酪氨酸荧光峰λех/еm=210/300 nm与可溶性微生物副产物的荧光峰λех/еm=250/310nm为炼化废水的特征荧光峰,水解酸化处理后消失;λех/еm=220/305 nm为炼油废水的特征荧光峰,好氧处理后消失;炼化废水位于RegionV的类胡敏酸类有机物荧光峰λех/еm=255/465 nm在二沉池前,荧光强度呈增强趋势,经深度处理后减弱;炼油废水位于RegionIII的类富里酸类有机物荧光峰λех/еm=320/400 nm,缺氧出水后荧光峰强度增加,后续无显著变化。炼化废水四种树脂分离组分的三维荧光光谱PRAFAC运算结果为5组分,主要特征荧光峰位于λех/еm=225/340 nm、235/340 nm、230/380 nm、235/360 nm、245/340 nm;炼油废水四种树脂分离组分的三维荧光光谱PRAFAC运算结果为4组分,主要特征荧光峰位于λех/еm=225/340 nm、235/360 nm、235/410 nm、200/300 nm。在污水处理不同工段,HIS的COD、TOC、TN在4类树脂分离组分中的含量均最高;三维荧光光谱解析表明,两种废水中HON类有机污染物的可生化性最差,为污水厂出水中的主要荧光类有机污染物,主要特征荧光峰位于λех/еm=235/360 nm。炼化废水与炼油废水中均含有荧光峰λех/еm=225/340 nm,产生该类荧光峰的有机污染物可生化性较好,经好氧生物处理即可完全去除。超滤分级各组分中,分子量1 kDa的组分,荧光峰强度最强,占炼化废水进水荧光强度的77.13%,占炼油废水进水荧光强度的86.11%。λех/еm=225/340 nm、235/345 nm的两类荧光峰均为两种废水的特征荧光峰,其中荧光峰λех/еm=235/345 nm经缺氧、好氧生物处理后荧光强度显著增强。石化综合废水中主要特征污染物苯、甲苯、乙苯、丙苯、异丙苯、二甲苯、三甲苯的荧光峰位于λех/еm=205~215 nm/280~295 nm;苯乙烯的荧光峰位于λех/еm=230/345nm;苯酚的两个荧光峰位于λех/еm=220/300 nm、270/295 nm;苯胺的两个荧光峰分别位于λех/еm=235/335 nm、280/335 nm;氯苯的荧光峰位于λех/еm=215/290 nm;硝基苯无显著荧光峰。苯乙烯、苯酚、苯胺的特征荧光峰与炼化和炼油废水的特征荧光峰位置基本一致。
[Abstract]:In this study, resin separation and ultrafiltration were used to separate different organic pollutants from two kinds of petrochemical wastewater (refinery wastewater and refinery wastewater). Based on the parallel factor algorithm, the fluorescence information of three dimensional fluorescence spectra of raw water and separated components was analyzed. At the same time, the main characteristic pollutants in petrochemical wastewater were qualitatively analyzed, and the relationship between the main characteristic pollutants in the wastewater and the fluorescence characteristics of the wastewater was studied. The total fluorescence intensity of the three dimensional fluorescence spectra of the wastewater from petrochemical integrated wastewater treatment plant, wastewater treatment process, refining and refining wastewater showed a decreasing trend, and the characteristic fluorescence peaks of the two kinds of wastewater in the low excitation band tryptophan region were both located at the 位 ~ (+) ~ (-) ~ (230) ~ (340) nm. The fluorescence intensity removal rates of this characteristic peak were 50% and 54% for refinery wastewater, respectively, and the fluorescence peak 位 _ (10 / 300) nm of low excitation tyrosine fluorescence peak and the fluorescence peak 位 ~ (2 +) / m=250/310nm of soluble microbial by-products were the characteristic fluorescence peaks of refinery wastewater. After hydrolysis and acidification treatment, 位 ~ (2 +) / m ~ (2 +) = 220 / 305 nm was the characteristic fluorescence peak of refinery wastewater, and then disappeared after aerobic treatment, and the fluorescence peak of Hu Min like acid organic compounds in RegionV was 位 ~ (2 +) / m ~ (25) / ~ (65) nm in front of secondary settling tank, the fluorescence intensity showed an increasing trend and decreased after advanced treatment. The fluorescence peak of organic compounds such as fulvic acid in RegionIII is 320 / 400 nm, and the intensity of fluorescence peak increases after anoxic water treatment, but there is no significant change in subsequent fluorescence peak. The PRAFAC calculation results of three dimensional fluorescence spectra of four kinds of resin separation components in refinery wastewater are five components, the main characteristic fluorescence peak is located at 位 ~ (2 25 /) 340Nm ~ (2) N ~ (-1) N ~ (2 +) ~ (23) / 380Nm ~ (3) N ~ (2 +) N ~ (3 +) N ~ (3 +) N ~ (34) N ~ (3 +) N ~ (34) N ~ (3 +) N ~ (3 +), the result of PRAFAC calculation of three dimensional fluorescence spectrum of four kinds of resin separation components in refinery wastewater is 4 components. The main characteristic fluorescence peaks are located at 位 ~ (25 / 340) nm ~ (-1) 235 / 360 ~ (nm) ~ (235) / 410 ~ (10) nm ~ (-1) ~ (200) ~ (300) nm ~ (-1). The contents of COD TOC TN of his in different stages of sewage treatment were the highest in the four kinds of resin separation components, and the three dimensional fluorescence spectrum analysis showed that the biodegradability of HON organic pollutants in the two kinds of wastewater was the worst. As the main fluorescent organic pollutants in the effluent of the wastewater treatment plant, the main characteristic fluorescence peak is located at 位 ~ (2 +) / ~ (2.5) / 360nm ~ (-1). Both refinery wastewater and refinery wastewater contain a fluorescence peak of 225 / 340 nm. The organic pollutants which produce this kind of fluorescence peak are biodegradable and can be completely removed by aerobic biological treatment. Among ultrafiltration fractionation components, the fluorescence peak intensity of molecular weight 1 kDa is the strongest, which accounts for 77.13% of the influent fluorescence intensity of refinery wastewater, and 86.11% of the influent fluorescence intensity of refinery wastewater. The two kinds of fluorescence peaks of 位 ~ (2 +) / ~ (2) 25 / 340nm ~ (235) / 345 nm are characteristic fluorescence peaks of two kinds of wastewater. The fluorescence peak 位 ~ (2 +) / ~ (235) / 345nm was significantly enhanced after anoxia and aerobic biological treatment. Benzene, toluene, ethylbenzene, propylbenzene, cumene, xylene, The fluorescence peaks of tritoluene are located at 位 ~ (2 +) / ~ (205) N ~ (2 +) 215 nm/280~295 ~ (m); those of styrene are located at 位 ~ (2 +) / m ~ (2 +) 230 / 345nm; two peaks of phenol are located at 位 ~ (2 +) / m ~ (2 +) / ~ (220) / m ~ (2 +) 270295 nm; two fluorescence peaks of aniline are located at 位 ~ (2 35) / m ~ (35) / N ~ (28)% ~ (335) nm, respectively; the fluorescence peak of chlorobenzene is located at 位 ~ (2 +) / m ~ (-1) 215290 nm ~ (-1); there is no significant fluorescence peak for nitrobenzene. The characteristic fluorescence peaks of styrene, phenol and aniline are basically the same as those of refinery and refinery wastewater.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X78;X742

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