【摘要】：廢水中的酚類(lèi)物質(zhì)會(huì)對(duì)人體的健康以及水生態(tài)環(huán)境造成嚴(yán)重的危害。膠團(tuán)強(qiáng)化超濾(MEUF)作為一種基于表面活性劑的超濾技術(shù),能夠有效地去除廢水中酚類(lèi)物質(zhì)。與傳統(tǒng)的水處理技術(shù)相比,MEUF法具有去除效率高、操作簡(jiǎn)便、回收效率高、能耗低、成本低等優(yōu)點(diǎn)。本次研究將MEUF方法引入模擬酚類(lèi)廢水的處理過(guò)程中,實(shí)驗(yàn)中選用四種常見(jiàn)的酚類(lèi):苯酚(P)、對(duì)硝基苯酚(PNP)、對(duì)氯基苯酚(PCP)以及對(duì)甲基苯酚(PC)作為實(shí)驗(yàn)對(duì)象,來(lái)觀察實(shí)驗(yàn)效果,本次研究還使用了陽(yáng)離子表面活性劑氯代十六烷基吡啶(CPC)、非離子表面活性劑曲通(TritonX-100)以及陰離子表面活性劑十二烷基苯磺酸鈉(SDBS)三種不同類(lèi)型的表面活性劑。分別使用三種表面活性劑來(lái)單獨(dú)去除單一酚廢水,并計(jì)算酚類(lèi)的去除率和分配系數(shù)以及表面活性劑的去除率。經(jīng)研究討論得知,酚類(lèi)的去除率和分配系數(shù)隨著樣液中表面活性劑的濃度的增加而增加,而當(dāng)同一種表面活性劑去除酚類(lèi)時(shí),酚類(lèi)的去除率和分配系數(shù)的大小關(guān)系為:PNPPCPPCP。而且在處理同一種酚的時(shí)候,CPC獲得了最大的去除效果,SDBS最差。同一種表面活性劑處理不同酚類(lèi)廢水時(shí),表面活性劑的去除率比較接近,然而,當(dāng)處理同一種酚時(shí),三種表面活性劑的去除率的大小關(guān)系為:TX-100CPCSDBS。研究證明采用膠團(tuán)強(qiáng)化超濾(MEUF)法來(lái)去除酚類(lèi)污染是可行的,其中使用陽(yáng)離子表面活性劑時(shí)對(duì)酚類(lèi)具有最優(yōu)的去除效果。本次研究通過(guò)比較三種表面活性劑對(duì)酚類(lèi)廢水的處理效果,更深入探討了不同種表面活性劑與酚類(lèi)之間的相互作用機(jī)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.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：X703

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