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Printing and dyeing wastewater decolorizing process technique

A technology for treating process, printing and dyeing wastewater, applied in textile industry wastewater treatment, light water/sewage treatment, etc., can solve the problems of many toxic substances, pollute the environment, high chromaticity, and achieve less investment in equipment, quick results, and efficient treatment efficiency. Effect

Inactive Publication Date: 2008-09-24
JIANGSU HUAJIA SILK
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Problems solved by technology

These wastewaters mainly come from the bleaching, dyeing, printing, finishing and other processes in the printing and dyeing process, and each process produces sewage with different components, which makes the printing and dyeing wastewater complex in composition, high in chroma, rich in toxic substances and seriously pollutes the environment. Therefore, printing and dyeing The comprehensive treatment of wastewater has become an urgent problem to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The invention has been verified in the second workshop of the seventh branch factory of Jiangsu Shenghong Group Printing and Dyeing Co., Ltd. The specific implementation steps include:

[0018] 1. Conduct an orthogonal test to investigate the influence of various factors on the degradation rate, optimize the combination of various factors, and determine the best process conditions for microwave demulsification.

[0019] 2. Compare the effect of microwave-photocatalysis and simple photocatalytic degradation method or traditional treatment method.

[0020] 3. Discussion on the kinetics of photocatalysis: take the reaction time as the abscissa, and the oil-water separation rate and the reaction rate as the ordinate to draw a graph, and analyze the curve equation.

[0021] Finally, the following process parameters are obtained: microwave power 850W, microwave irradiation time 10min, photocatalytic time after microwave irradiation is 20min, and the amount of catalyst is 0.2...

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Abstract

The invention relates to a dye wastewater decolor treatment technology, which is characterized in that microwave-light is utilized to catalyze and couple as well as degrade organic wastewater, reaction solution is heated through the pretreatment of the microwave before the light catalytic reaction, so the reaction time of the light catalytic degradation method is shortened; five important factors influencing the degradation dye effect of the microwave radiation degradation method are found, and the best technological condition of the microwave degradation method is determined through orthogonality experiment. The technology of the invention has the advantages of the biological treatment method and the physical treatment method, the treatment efficiency is highly efficient and quick, the investment of the required equipment is less, the effect is taken fast, and the decolor ratio to particularly color thicker organic wastewater reaches up to more than 90 percent.

Description

technical field [0001] The invention relates to a process for treating printing and dyeing wastewater, in particular to a new process for treating sewage. Background technique [0002] The textile industry is one of the important economic sectors of our country. In the textile industry, all kinds of wastewater will be produced, among which the pollution of printing and dyeing wastewater is more serious, and its discharge accounts for about one tenth of the total discharge of industrial wastewater. These wastewaters mainly come from the bleaching, dyeing, printing, finishing and other processes in the printing and dyeing process, and each process produces sewage with different components, which makes the printing and dyeing wastewater complex in composition, high in chroma, rich in toxic substances and seriously pollutes the environment. Therefore, printing and dyeing The comprehensive treatment of wastewater has become an urgent problem to be solved. Printing and dyeing wa...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F103/30
Inventor 王永根
Owner JIANGSU HUAJIA SILK
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