新型镍电极电芬顿法预处理印染废水效能研究
发布时间：2018-12-23 09:57
【摘要】：印染工业是我国经济行业中最重要的领域之一,因此印染废水成为工业废水的一大来源;又因印染废水色度极高、成分复杂多样,印染废水的处理变得十分困难。鉴于此有必要寻找一种高效快速降低印染废水色度,同时提高印染废水可生化性的预处理方法。本课题以北京某纺织厂气浮池出水-印染废水作为研究对象,使用电芬顿工艺预处理印染废水;研究了阴阳极都为石墨板的C/C电芬顿体系与阳极为石墨板、阴极为泡沫镍的C/Ni电芬顿体系的电芬顿反应过程,并优化反应条件,处理实际废水。研究发现不论使用何种极板做阴极,电芬顿反应的最优条件都为p H=3、C(Fe2+)=15μmol/L。但使用泡沫镍做阴极后H2O2和?OH产量较使用石墨做阴极的电芬顿体系都有显著的升高,产生速率也有明显升高。p H越高Fe2+越容易被无效消耗,p H越低越有利于H2O2的产生与保存,产?OH的最优条件为p H=3、C(Fe2+)=15μmol/L。用电芬顿法处理Rh B配制废水,通过条件对比证明,?OH是处理Rh B染料的主要氧化剂。通过荧光光度计和LC-MS分析Rh B的降解过程和产物。发现在配制废水脱色完全后,用荧光光度计测量废水,废水的荧光峰位发生明显变化,荧光峰值明显减弱。使用LC-MS分析废水发现,Rh B染料分子在降解过程中由大分子物质逐渐分解为小分子物质。电芬顿法处理Rh B配置废水脱色效果显著。用电芬顿法对实际废水预处理,发现使用C/Ni电芬顿体系可以在低电流、短时间处理后使废水快速脱色,色度达到排放标准;并显著提高废水的B/C,使废水由生物难降解废水变为易降解废水。用GC-MS分析,发现实际印染废水经处理后其中的大分子物质相对含量降低,小分子物质相对含量升高,与溶液B/C比升高相吻合;含有有色基团的分子相对含量降低,与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.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X791
本文编号：2389810
[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.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X791
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