Treating method for efficiently catalyzing and oxidizing chlor-alkali industrial waste water

A technology of catalytic oxidation and chlor-alkali industry, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as environmental and human life hazards, waste of water resources, etc., and achieve low operating costs and high technology Simple, easy-to-prepare effects

Inactive Publication Date: 2011-12-14
NANJING TECH UNIV
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  • Claims
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Problems solved by technology

The discharge of wastewater rich in sodium hypochlorite not only causes a lot of waste of water resources, but also causes great harm to the environment and human life

Method used

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  • Treating method for efficiently catalyzing and oxidizing chlor-alkali industrial waste water
  • Treating method for efficiently catalyzing and oxidizing chlor-alkali industrial waste water
  • Treating method for efficiently catalyzing and oxidizing chlor-alkali industrial waste water

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Example 1: Catalytic oxidation treatment of chlor-alkali wastewater containing sodium hypochlorite by Al2O3 supported nickel oxide catalyst

[0024] The reaction is carried out in a reactor made of glass. Put the chlor-alkali wastewater containing sodium hypochlorite in the liquid storage tank, and use the peristaltic pump to adjust the space velocity, so that the alkaline wastewater containing sodium hypochlorite has a space velocity of 1.6h from bottom to top -1 Continuously passing through the catalytic oxidation reaction bed equipped with 120g catalyst, the catalyst catalytically decomposes the sodium hypochlorite solution, and the results are shown in Table 1.

[0025] The space velocity of embodiment 2-6 is shown in Table 1, and other conditions and methods are with embodiment 1, and the results are shown in Table 1:

[0026] Table 1 Catalytic oxidation degradation effect of chlor-alkali wastewater containing sodium hypochlorite

[0027] Example 1

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Abstract

The invention discloses a treating method for efficiently catalyzing and oxidizing chlor-alkali industrial waste water. In the method, sodium hypochlorite in the chlor-alkali industrial waste water is decomposed mainly by adding a nickel oxide catalyst with an efficient surface; and simultaneously a small amount of other pollutants in the waste water is degraded. The treating method for efficiently catalyzing and oxidizing the chlor-alkali industrial waste water of the invention comprises the following step of: making sodium hypochlorite-containing alkaline waste water continuously flow through a catalytic oxidation reaction bed filled with a catalyst from the bottom to the top at an air speed of between 1.6 and 2.6 h<-1>.

Description

technical field [0001] The invention relates to a treatment method for industrial wastewater, in particular to a treatment method for highly efficient catalytic oxidation of chlor-alkali industrial wastewater. Background technique [0002] The chlor-alkali industry is one of the most basic chemical industries, including polyvinyl chloride resin, caustic soda, and hydrochloric acid. Chlor-alkali products such as liquid chlorine are essential substances for the national economy and people's lives, and occupy an important position in the national economy and national defense construction, but at the same time, the chlor-alkali industry also causes relatively large environmental pollution. With the enhancement of people's awareness of environmental protection, more and more attention is paid to the pollution caused by the chemical production process based on the chlor-alkali industry and the impact of its products on the environment. Therefore, while giving full play to the rol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755C02F1/72
Inventor 梅华邓海燕贾苏慧
Owner NANJING TECH UNIV
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