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Ozone-hydrogen peroxide catalytic oxidation catalyst and method for treating biochemical wastewater by using ozone-hydrogen peroxide catalytic oxidation catalyst

A hydrogen peroxide and catalytic oxidation technology, which is applied in the direction of oxidized water/sewage treatment, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as difficult recovery, easy loss of metal ions, poor catalyst stability, etc., and achieve improvement Effects of mechanical strength and specific surface area, enhanced catalytic oxidation efficiency, and improved catalytic oxidation efficiency

Pending Publication Date: 2022-03-01
WANHUA CHEM GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Invention patent CN 104192966 A discloses a process for advanced treatment of coking biochemical wastewater by using coke powder and flocculant, but a large amount of coke powder needs to be added, the amount of sludge generated is relatively large, and the treatment device is relatively complicated
[0006] Invention patent CN 110479327A discloses a catalyst for promoting ozone oxidation ability, but the catalyst is composed of iron compound and sodium polyphosphate compound, although the oxidation ability of ozone is effectively improved, but the catalyst is soluble in water, easy to be lost, not easy to Recycle and produce secondary pollution
[0007] Invention patent CN 108579755A discloses a preparation method of an ozone oxidation catalyst, but it uses a simple impregnation method to load active components, the catalyst stability is poor, metal ions are easily lost, and the COD removal efficiency is about 50%, which needs to be improved

Method used

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  • Ozone-hydrogen peroxide catalytic oxidation catalyst and method for treating biochemical wastewater by using ozone-hydrogen peroxide catalytic oxidation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0063] Example 1-1: Modified Kaolin, α-Silicon Carbide and TiO 2 Preparation of composite carrier-1

[0064] Take Kaolin, α-Silicon Carbide and TiO 2 60g of the compound mixed according to the mass ratio of 3:1:1 was placed in 600g of ethanol, mixed and stirred for 10 minutes, mixed and pulverized by a high-shear emulsifier for 40 minutes, filtered and then placed in a constant temperature drying box to dry at 100 °C for 3 hours, and then the obtained The mixed powder was calcined at 750 °C for 2 h in a muffle furnace to obtain modified kaolin, α-silicon carbide and TiO 2 composite carrier.

Embodiment 1-2

[0065] Example 1-2: Modified Kaolin, α-Silicon Carbide and TiO 2 Preparation of composite carrier-2

[0066] Take Kaolin, α-Silicon Carbide and TiO 2 20g of the compound mixed according to the mass ratio of 5:3:1 was placed in 150g of methanol, mixed and stirred for 5 minutes, mixed and pulverized by a high shear emulsifier for 20 minutes, filtered and then placed in a constant temperature drying box to dry at 90 °C for 4 hours, and then the obtained The mixed powder was calcined at 600 °C for 3 h in a muffle furnace to obtain modified kaolin, α-silicon carbide and TiO 2 Composite carrier-2.

Embodiment 1-3

[0067] Examples 1-3: Modified Kaolin, α-Silicon Carbide and TiO 2 Preparation of composite carrier-3

[0068] Take Kaolin, α-Silicon Carbide and TiO 2 20g of the compound mixed according to the mass ratio of 1:2:1 was placed in 100g of ethanol, mixed and stirred for 10 minutes, mixed and pulverized by a high shear emulsifier for 60 minutes, filtered and then placed in a constant temperature drying box and dried at 120 ° C for 2 hours, and then the obtained The mixed powder was calcined at 800 °C for 1 h in a muffle furnace to obtain modified kaolin, α-silicon carbide and TiO 2 Composite carrier-3.

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Abstract

The embodiment of the invention discloses an ozone-hydrogen peroxide high-efficiency catalytic oxidation catalyst and a method for treating biochemical wastewater by using the ozone-hydrogen peroxide high-efficiency catalytic oxidation catalyst. A carrier of the catalyst is kaolin, alpha-silicon carbide and a TiO2 compound which are modified by a shearing-roasting method, and the active components comprise cobalt, manganese, neodymium and promethium which exist in an oxide form. The catalyst is prepared by a two-stage in-situ aging method, and has the characteristics of stable mechanical properties, high catalytic oxidation efficiency and less metal ion loss. Under the action of synergistic existence of ozone and hydrogen peroxide, an efficient catalyst is used for promoting an oxidizing agent to be decomposed to generate hydroxyl radicals, organic matters in the biochemical wastewater can be effectively degraded, the COD removal rate is increased, the method is simple and easy to implement, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to the field of wastewater treatment, and more particularly, to an ozone-hydrogen peroxide catalytic oxidation catalyst and a method for treating biochemical wastewater. Background technique [0002] With the rapid development of global industrialization, water pollution has become a difficult problem restricting the development of enterprises. At present, among various wastewater treatment technologies, biochemical technology utilizes the biochemical action of microorganisms in wastewater to effectively decompose organic matter and some toxic inorganic substances in water. Compared with traditional wastewater treatment technology, biochemical technology has low cost and high treatment efficiency, and has attracted more and more attention of researchers. However, due to the complex components in some industrial wastewaters and some refractory biodegradable substances, it is generally difficult to directly discharge the effluent f...

Claims

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Application Information

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IPC IPC(8): B01J27/224B01J35/10C02F1/72C02F1/78C02F9/04C02F9/14C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J27/224C02F1/78C02F1/725C02F1/722C02F9/00C02F1/66C02F2101/30C02F2101/345C02F2101/38C02F2101/36C02F2209/08B01J35/61
Inventor 高学顺王诗涵姜晓锋荆开石张宏科
Owner WANHUA CHEM GRP
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