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Manganese, zirconium and titanium ternary composite catalytic wet oxidation catalyst for alkaline residue wastewater as well as preparation method and application of catalyst

A technology of catalytic wet oxidation and ternary compounding, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve simple preparation methods, good practicability, and degradation efficiency Improved effect

Pending Publication Date: 2018-11-06
JIANGSU OPEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment of alkali slag wastewater is much more difficult than general domestic wastewater and industrial wastewater. It is difficult for ordinary wastewater treatment methods to have a good treatment effect on alkali slag wastewater.

Method used

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  • Manganese, zirconium and titanium ternary composite catalytic wet oxidation catalyst for alkaline residue wastewater as well as preparation method and application of catalyst
  • Manganese, zirconium and titanium ternary composite catalytic wet oxidation catalyst for alkaline residue wastewater as well as preparation method and application of catalyst
  • Manganese, zirconium and titanium ternary composite catalytic wet oxidation catalyst for alkaline residue wastewater as well as preparation method and application of catalyst

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Experimental program
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Effect test

Embodiment 1

[0020] A method for preparing a manganese, zirconium, titanium ternary composite alkali slag wastewater catalytic wet oxidation catalyst, the steps are as follows:

[0021] 1) In the manganese chloride solution whose mass fraction of manganese element is 0.5%, add the nano-aluminosilicate crystal material according to the amount of adding 0.2g per liter of manganese chloride solution, dry to constant weight under vacuum condition, the temperature is 70°C. Afterwards, the prepared material was burned in a muffle furnace at 300° C. for 5 hours to obtain an intermediate product.

[0022] 2) Prepare a mixed solution of titanium sulfate and zirconium oxychloride, wherein the concentration of titanium sulfate is 0.03mol / L, the concentration of zirconium oxychloride is 0.02mol / L, and nitric acid is added therein (mass fraction concentration is 68%) , the addition of nitric acid is 0.5mL / L mixed solution of titanium sulfate and zirconium oxychloride. Use a peristaltic pump to gradua...

Embodiment 2

[0028] A method for preparing a manganese, zirconium, titanium ternary composite alkali slag wastewater catalytic wet oxidation catalyst, the steps are as follows:

[0029] 1) In the manganese chloride solution whose mass fraction of manganese element is 0.65%, add nano-aluminosilicate crystal material according to the amount of 0.35g per liter of manganese chloride solution, dry to constant weight under vacuum condition, the temperature is 70°C. Afterwards, the prepared material was burned in a muffle furnace at 350° C. for 6 hours to obtain an intermediate sample.

[0030] 2) Prepare a mixed solution of titanium sulfate and zirconium oxychloride, wherein the concentration of titanium sulfate is 0.05mol / L, the concentration of zirconium oxychloride is 0.05mol / L, and nitric acid is added therein (mass fraction concentration is 68%) , the addition of nitric acid is 0.8mL / L mixed solution of titanium sulfate and zirconium oxychloride. Use a peristaltic pump to gradually add th...

Embodiment 3

[0037] A method for preparing a manganese, zirconium, titanium ternary composite alkali slag wastewater catalytic wet oxidation catalyst, the steps are as follows:

[0038] 1) In the manganese chloride solution whose manganese element mass fraction is 0.8%, add the nano aluminosilicate crystal material according to the amount of adding 0.5g per liter of manganese chloride solution, dry to constant weight under vacuum condition, the temperature is 70°C. Afterwards, the prepared material was burned in a muffle furnace at 400° C. for 7 hours to obtain an intermediate sample.

[0039]2) Prepare a mixed solution of titanium sulfate and zirconium oxychloride, wherein the concentration of titanium sulfate is 0.07mol / L, the concentration of zirconium oxychloride is 0.08mol / L, and nitric acid is added therein (mass fraction concentration is 68%) , the addition of nitric acid is 1.2mL / L mixed solution of titanium sulfate and zirconium oxychloride. Use a peristaltic pump to gradually a...

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Abstract

The invention discloses a manganese, zirconium and titanium ternary composite catalytic wet oxidation catalyst for alkaline residue wastewater as well as a preparation method and an application of thecatalyst. The ternary composite catalyst is formed by supporting ruthenium, zirconium and titanium ternary composite metal on nano aluminosilicate crystals as a carrier. The preparation method of themanganese, zirconium and titanium ternary composite catalytic wet oxidation catalyst for alkaline residue wastewater is simple and easy to implement, the obtained manganese, zirconium and titanium ternary composite catalytic material has good catalytic action on catalytic wet oxidation treatment of high-concentration and refractory alkaline residue wastewater produced in the petroleum refining process, tests prove that the degradation efficiency is remarkably improved, the CODcr removal rate of the alkaline residue wastewater is increased by 41% or above as compared with the wet oxidation degradation effect without the catalyst under the same condition, and the catalyst has very good practicability.

Description

technical field [0001] The invention belongs to the field of photocatalytic catalyst materials, and in particular relates to a manganese, zirconium and titanium ternary composite alkali slag wastewater catalytic wet oxidation catalyst and its preparation method and application. Background technique [0002] In recent years, with the development of my country's economy and society, industrial technology including petrochemical industry has also made rapid progress, providing a solid material foundation for the improvement of my country's comprehensive national strength and the improvement of people's living standards. On the other hand, the pollution caused by the petrochemical industry is also one of the environmental problems that cannot be ignored in our country. Alkali residue wastewater is one of the industrial wastewater with high organic concentration, high toxicity and refractory degradation produced in the petrochemical industry during the petroleum refining process....

Claims

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Application Information

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IPC IPC(8): B01J23/34C02F1/72C02F101/30C02F103/36
CPCB01J23/002B01J23/34C02F1/725C02F2101/30C02F2103/365
Inventor 程婷张晓
Owner JIANGSU OPEN UNIV
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