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The rapid development of the dye industry production of the dye in the dye process wastewater has become one of the key issues of industrial wastewater treatment. The dye wastewater production, a wide range of pollution, and high concentration of color, and different production process, often contain complex recalcitrant toxic and hazardous substances. Modern treatment methods include: chemical method, flocculation, chemical oxidation and biochemical methods. Flocculation method handle all the processing method compared to low-input, easy to operate and handle a large amount of processing method. The flocculant mainly divided into inorganic flocculants and organic flocculants. Inorganic flocculants due to low-cost, simple process to become an important means of industrial wastewater treatment, the traditional the inorganic flocculants mainly divided into two major lines of iron salts and aluminum salts, the treatment process with agent generally two research foundation developed on a new type of inorganic polymer flocculant. The flocculant used in this study, both belonging to such, it has a better than conventional inorganic flocculant adsorption and flocculation and sedimentation properties. And this paper, with the bleaching agent and coagulant aids into the processing system, in simple conditions, the three together, significantly improve the wastewater treatment effect flocculation effect, while significantly reducing the color of the wastewater degrees and COD values. Determined by experiment the flocculant, bleaching agents, and to help coagulant doses and types of water samples conducted a preliminary study to explore the combined treatment of dye wastewater. Processing technology in recent years, a study of the electrochemical method popular, studies have shown that the electrochemical method can remove the heavy metals in the water, and good treatment effect of COD and chroma. This method equipment small footprint, easy management and no secondary pollution. Different ways according to the electrode reaction, electrolysis of wastewater treatment can be divided into electro-coagulation, electrical float and electro-catalytic oxidation. Electrocatalytic oxidation for processing biodegradable organic matter with good results, a necessary condition for catalytic electrode has a high oxygen evolution overpotential the anode characteristics decisions ways and the extent of oxidation. Different electrode materials selection is a key factor affecting electrolysis efficiency. The study prepared by electrodeposition titanium base - lead dioxide electrode production process, dye wastewater by the electrolytic flocculation coagulation method after pretreatment, this chroma and wastewater treatment removal rate of CODCr, indicating the good catalytic properties of the electrode obtained by this method. This study in order to this electrode obtained by the method can be better applied to the dye wastewater treatment, by changing the concentration of waste water into water, intensity of voltage, the electrolysis time, a pH value of wastewater, and a plate spacing conditions, measuring the electrolytic process of dye wastewater. CODCr and chroma change to study this titanium base - lead dioxide electrode treatment of dye wastewater utility, and reached a deal with conclusion. From dye wastewater treatment costs and the life of the electrode and other considerations, the Institute wastewater into the water concentration of CODCr is 2400 ± 300mg / L, the electrolysis voltage is 8V, time was 4h, wastewater neutral pH conditions, the plate spacing of 2 cm: cause wastewater is too large, viscosity the electrode processing load is too large, and to reduce the electrodes produce a radical OH can not be used in this condition with the organic contaminants effective response; into the water concentration is too Assembly as voltage increases, the intensity of the current in the electrolytic cell is also increased, so that the electrode surface to generate the hydroxyl radical OH · increased, the electrodes have a sufficient capacity and water the organic contaminants to a more efficient reaction occurs, the voltage is too large, resulting in the increase of side reactions of the electrolyzer ; under acidic conditions due to OH · not good, and the reduction product generated under alkaline conditions is suppressed, so the highest efficiency of electrolysis under neutral conditions; appropriate plate spacing conducive the electrolysis efficiency.
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