超滤过程中表面活性剂对酚类增溶效能的影响研究
发布时间：2018-11-17 15:32
【摘要】：废水中的酚类物质会对人体的健康以及水生态环境造成严重的危害。胶团强化超滤(MEUF)作为一种基于表面活性剂的超滤技术,能够有效地去除废水中酚类物质。与传统的水处理技术相比,MEUF法具有去除效率高、操作简便、回收效率高、能耗低、成本低等优点。本次研究将MEUF方法引入模拟酚类废水的处理过程中,实验中选用四种常见的酚类:苯酚(P)、对硝基苯酚(PNP)、对氯基苯酚(PCP)以及对甲基苯酚(PC)作为实验对象,来观察实验效果,本次研究还使用了阳离子表面活性剂氯代十六烷基吡啶(CPC)、非离子表面活性剂曲通(TritonX-100)以及阴离子表面活性剂十二烷基苯磺酸钠(SDBS)三种不同类型的表面活性剂。分别使用三种表面活性剂来单独去除单一酚废水,并计算酚类的去除率和分配系数以及表面活性剂的去除率。经研究讨论得知,酚类的去除率和分配系数随着样液中表面活性剂的浓度的增加而增加,而当同一种表面活性剂去除酚类时,酚类的去除率和分配系数的大小关系为:PNPPCPPCP。而且在处理同一种酚的时候,CPC获得了最大的去除效果,SDBS最差。同一种表面活性剂处理不同酚类废水时,表面活性剂的去除率比较接近,然而,当处理同一种酚时,三种表面活性剂的去除率的大小关系为:TX-100CPCSDBS。研究证明采用胶团强化超滤(MEUF)法来去除酚类污染是可行的,其中使用阳离子表面活性剂时对酚类具有最优的去除效果。本次研究通过比较三种表面活性剂对酚类废水的处理效果,更深入探讨了不同种表面活性剂与酚类之间的相互作用机理。
[Abstract]:Phenolic substances in wastewater will cause serious harm to human health and aquatic ecological environment. Micellar enhanced ultrafiltration (MEUF), as a surfactant based ultrafiltration technology, can effectively remove phenols from wastewater. Compared with the traditional water treatment technology, MEUF has the advantages of high removal efficiency, simple operation, high recovery efficiency, low energy consumption and low cost. In this study, MEUF method was introduced into the treatment of simulated phenolic wastewater. Four common phenols were selected in the experiment: phenol (P), p-nitrophenol (PNP), p-chlorophenol (PCP) and p-methyl phenol (PC) as experimental objects. To observe the experimental results, the cationic surfactant cetylpyridine (CPC), was also used in this study. Nonionic surfactant (TritonX-100) and anionic surfactant sodium dodecylbenzene sulfonate (SDBS) are three kinds of surfactants. Three surfactants were used to separate the removal of single phenol wastewater, and the removal rate and partition coefficient of phenols and the removal rate of surfactants were calculated. The results show that the removal rate and partition coefficient of phenols increase with the increase of surfactant concentration in the sample solution. When the same surfactant is removed, the relationship between the removal rate of phenols and the distribution coefficient is as follows: PNPPCPPCP. When the same phenol was treated, CPC had the largest removal effect, SDBS was the worst. The removal rate of different phenolic wastewater treated by the same surfactant is similar. However, when the same phenol is treated, the relationship between the removal efficiency of the three surfactants is as follows: TX-100CPCSDBS. It is proved that the micelle enhanced ultrafiltration (MEUF) method is feasible to remove phenol pollution, and the cationic surfactant has the best removal effect. In this study, the mechanism of interaction between different surfactants and phenols was discussed by comparing the effects of three surfactants on the treatment of phenolic wastewater.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703
本文编号：2338313
[Abstract]:Phenolic substances in wastewater will cause serious harm to human health and aquatic ecological environment. Micellar enhanced ultrafiltration (MEUF), as a surfactant based ultrafiltration technology, can effectively remove phenols from wastewater. Compared with the traditional water treatment technology, MEUF has the advantages of high removal efficiency, simple operation, high recovery efficiency, low energy consumption and low cost. In this study, MEUF method was introduced into the treatment of simulated phenolic wastewater. Four common phenols were selected in the experiment: phenol (P), p-nitrophenol (PNP), p-chlorophenol (PCP) and p-methyl phenol (PC) as experimental objects. To observe the experimental results, the cationic surfactant cetylpyridine (CPC), was also used in this study. Nonionic surfactant (TritonX-100) and anionic surfactant sodium dodecylbenzene sulfonate (SDBS) are three kinds of surfactants. Three surfactants were used to separate the removal of single phenol wastewater, and the removal rate and partition coefficient of phenols and the removal rate of surfactants were calculated. The results show that the removal rate and partition coefficient of phenols increase with the increase of surfactant concentration in the sample solution. When the same surfactant is removed, the relationship between the removal rate of phenols and the distribution coefficient is as follows: PNPPCPPCP. When the same phenol was treated, CPC had the largest removal effect, SDBS was the worst. The removal rate of different phenolic wastewater treated by the same surfactant is similar. However, when the same phenol is treated, the relationship between the removal efficiency of the three surfactants is as follows: TX-100CPCSDBS. It is proved that the micelle enhanced ultrafiltration (MEUF) method is feasible to remove phenol pollution, and the cationic surfactant has the best removal effect. In this study, the mechanism of interaction between different surfactants and phenols was discussed by comparing the effects of three surfactants on the treatment of phenolic wastewater.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703
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