【摘要】：印染工業(yè)是我國(guó)經(jīng)濟(jì)行業(yè)中最重要的領(lǐng)域之一,因此印染廢水成為工業(yè)廢水的一大來(lái)源;又因印染廢水色度極高、成分復(fù)雜多樣,印染廢水的處理變得十分困難。鑒于此有必要尋找一種高效快速降低印染廢水色度,同時(shí)提高印染廢水可生化性的預(yù)處理方法。本課題以北京某紡織廠氣浮池出水-印染廢水作為研究對(duì)象,使用電芬頓工藝預(yù)處理印染廢水;研究了陰陽(yáng)極都為石墨板的C/C電芬頓體系與陽(yáng)極為石墨板、陰極為泡沫鎳的C/Ni電芬頓體系的電芬頓反應(yīng)過(guò)程,并優(yōu)化反應(yīng)條件,處理實(shí)際廢水。研究發(fā)現(xiàn)不論使用何種極板做陰極,電芬頓反應(yīng)的最優(yōu)條件都為p H=3、C(Fe2+)=15μmol/L。但使用泡沫鎳做陰極后H2O2和?OH產(chǎn)量較使用石墨做陰極的電芬頓體系都有顯著的升高,產(chǎn)生速率也有明顯升高。p H越高Fe2+越容易被無(wú)效消耗,p H越低越有利于H2O2的產(chǎn)生與保存,產(chǎn)?OH的最優(yōu)條件為p H=3、C(Fe2+)=15μmol/L。用電芬頓法處理Rh B配制廢水,通過(guò)條件對(duì)比證明,?OH是處理Rh B染料的主要氧化劑。通過(guò)熒光光度計(jì)和LC-MS分析Rh B的降解過(guò)程和產(chǎn)物。發(fā)現(xiàn)在配制廢水脫色完全后,用熒光光度計(jì)測(cè)量廢水,廢水的熒光峰位發(fā)生明顯變化,熒光峰值明顯減弱。使用LC-MS分析廢水發(fā)現(xiàn),Rh B染料分子在降解過(guò)程中由大分子物質(zhì)逐漸分解為小分子物質(zhì)。電芬頓法處理Rh B配置廢水脫色效果顯著。用電芬頓法對(duì)實(shí)際廢水預(yù)處理,發(fā)現(xiàn)使用C/Ni電芬頓體系可以在低電流、短時(shí)間處理后使廢水快速脫色,色度達(dá)到排放標(biāo)準(zhǔn);并顯著提高廢水的B/C,使廢水由生物難降解廢水變?yōu)橐捉到鈴U水。用GC-MS分析,發(fā)現(xiàn)實(shí)際印染廢水經(jīng)處理后其中的大分子物質(zhì)相對(duì)含量降低,小分子物質(zhì)相對(duì)含量升高,與溶液B/C比升高相吻合;含有有色基團(tuán)的分子相對(duì)含量降低,與溶液色度降低相吻合。
[Abstract]:Printing and dyeing industry is one of the most important fields in China's economic industry, so printing and dyeing wastewater has become a major source of industrial wastewater, and printing and dyeing wastewater treatment has become very difficult because of its extremely high chroma and complex composition. In view of this, it is necessary to find an efficient and rapid pretreatment method to reduce the color of printing and dyeing wastewater and improve the biodegradability of printing and dyeing wastewater. In this paper, a textile factory in Beijing air floatation pond effluent-printing and dyeing wastewater as the research object, so that the electric Fenton process pretreatment of printing and dyeing wastewater; The process of electric Fenton reaction between C / C electric Fenton system with cathode and anode as graphite plate and cathode with nickel foam was studied. The reaction conditions were optimized and the actual wastewater was treated. It is found that the optimal conditions for electric Fenton reaction, no matter what kind of electrode plate is used as cathode, are p H 3 C (Fe2) = 15 渭 mol/L.. However, the yields of H2O2 and? OH with nickel foam as cathode were significantly higher than those with graphite cathode, and the higher the. P H was, the more Fe2 could be consumed. The lower the pH is, the more favorable the production and preservation of H2O2 is. The optimal conditions for producing OH are as follows: pH3 C (Fe2) = 15 渭 mol/L.. Rh B preparation wastewater was treated by electric Fenton process. It was proved that? OH was the main oxidant for Rh B dye treatment. The degradation process and product of Rh B were analyzed by fluorescence photometer and LC-MS. It is found that the fluorescence peak position of the wastewater changes obviously and the peak value of fluorescence decreases obviously after the decolorization of the prepared wastewater is complete and the fluorescence photometer is used to measure the wastewater. LC-MS analysis showed that the, Rh B dye molecules were decomposed from macromolecules to small molecules in the process of degradation. The decolorization effect of Rh B configuration wastewater by electric Fenton process is remarkable. The actual wastewater was pretreated by electric Fenton method. It was found that the C/Ni electric Fenton system could decolorize the wastewater quickly after low current and short time treatment, and the chroma could reach the discharge standard. The B / C ratio of wastewater was significantly increased, and the wastewater was changed from biodegradable wastewater to easily degradable wastewater. By GC-MS analysis, it was found that the relative content of macromolecular substance decreased and the relative content of small molecular substance increased after treatment, which coincided with the increase of B / C ratio of solution. The relative content of the molecules containing colored groups decreased, which coincided with the decrease of chroma of the solution.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：X791

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本文編號(hào)：2389810