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Heterogeneous Fenton catalyst and Fenton oxidation treatment method for phenol-containing wastewater

A treatment method and catalyst technology, which can be used in oxidized water/sewage treatment, special compound water treatment, water/sewage treatment, etc., and can solve problems such as low COD removal efficiency

Active Publication Date: 2020-04-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] One of the technical problems to be solved by the present invention is the low efficiency of COD removal in the prior art, and a heterogeneous Fenton catalyst is provided, which has the advantage of high efficiency of COD removal

Method used

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  • Heterogeneous Fenton catalyst and Fenton oxidation treatment method for phenol-containing wastewater
  • Heterogeneous Fenton catalyst and Fenton oxidation treatment method for phenol-containing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Catalyst preparation

[0049] The preparation method of metal oxide:

[0050] (1) will contain the equivalent of 6 parts of CeO 2 Ce(NO 3 ) 3 Add 50 parts of aqueous solution to 10 parts of citric acid and 6 parts of ethylene glycol, and evaporate to dryness in a sand bath to obtain a precursor;

[0051] (2) The precursor is calcined at 600° C. for 4 hours to obtain the metal oxide, which is pulverized for later use.

[0052] Formation of the catalyst:

[0053] Mix 54 parts of activated carbon, 6 parts of metal oxides, 40 parts of alumina and 5 parts of water, make pellets, dry them, and bake them at 400°C for 4 hours to obtain the catalyst. The formulation of the catalyst is shown in Table 1.

[0054] 2. Catalyst evaluation

[0055] Phenol wastewater with a COD value of 1,200mg / L was used as raw material, and the pH was adjusted to 3.5 with nitric acid before the reaction. Wastewater is mixed with hydrogen peroxide and passed through a 120mL fixed-bed reacto...

Embodiment 2

[0057] 1. Catalyst preparation

[0058] The preparation method of metal oxide:

[0059] (1) will contain equivalent to 6 parts of Fe 2 o 3 Fe(NO 3 ) 3 Add 50 parts of aqueous solution to 10 parts of citric acid and 6 parts of ethylene glycol, and evaporate to dryness in a sand bath to obtain a precursor;

[0060] (2) The precursor is calcined at 600° C. for 4 hours to obtain the metal oxide, which is pulverized for later use.

[0061] Formation of the catalyst:

[0062] Mix 54 parts of activated carbon, 6 parts of metal oxides, 40 parts of alumina and 5 parts of water, make pellets, dry them, and bake them at 400°C for 4 hours to obtain the catalyst. The formulation of the catalyst is shown in Table 1.

[0063] 2. Catalyst evaluation

[0064] Phenol wastewater with a COD value of 1,200mg / L was used as raw material, and the pH was adjusted to 3.5 with nitric acid before the reaction. Wastewater is mixed with hydrogen peroxide and passed through a 120mL fixed-bed reacto...

Embodiment 3

[0066] 1. Catalyst preparation

[0067] The preparation method of metal oxide:

[0068] (1) Cu(NO) containing 6 parts of CuO 3 ) 2 Add 50 parts of aqueous solution to 10 parts of citric acid and 6 parts of ethylene glycol, and evaporate to dryness in a sand bath to obtain a precursor;

[0069] (2) The precursor is calcined at 600° C. for 4 hours to obtain the metal oxide, which is pulverized for later use.

[0070] Formation of the catalyst:

[0071] Mix 54 parts of activated carbon, 6 parts of metal oxides, 40 parts of alumina and 5 parts of water, make pellets, dry them, and bake them at 400°C for 4 hours to obtain the catalyst. The formulation of the catalyst is shown in Table 1.

[0072] 2. Catalyst evaluation

[0073] Phenol wastewater with a COD value of 1,200mg / L was used as raw material, and the pH was adjusted to 3.5 with nitric acid before the reaction. Wastewater is mixed with hydrogen peroxide and passed through a 120mL fixed-bed reactor filled with 85g of c...

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Abstract

The invention relates to a heterogeneous Fenton catalyst and a treatment method of phenol-containing wastewater. A purpose of the invention is to solve the problem that the existing catalyst is low inefficiency of reducing COD in wastewater. According to the technical scheme, the heterogeneous Fenton catalyst comprises a carrier and an active component, and the active component comprises at leastone selected from a substance group consisting of CeO2, Fe2O3, CuO, MnO2 and Au. With the technical scheme, the problem in the prior art is well solved. The catalyst can be used for treating phenol-containing wastewater.

Description

technical field [0001] The invention relates to a heterogeneous Fenton catalyst and a Fenton oxidation treatment method for phenol-containing wastewater. [0002] technical background [0003] Phenolic compounds are raw materials and intermediates produced in industries such as papermaking, coking, oil refining, plastics, pesticides, and pharmaceutical synthesis. These compounds are highly toxic, difficult to degrade, and have poisonous effects on all living organisms. Even if 0.002ppm of phenolic compounds are contained in drinking water, they will cause great harm to the human body. The treatment of phenolic wastewater has attracted widespread attention from all over the world, and this compound has been listed as a key pollutant to be controlled and discharged. At present, the treatment methods of phenol-containing wastewater mainly include physical methods, chemical methods, and biochemical methods. [0004] The heterogeneous Fenton oxidation method is especially suitab...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01J23/745B01J23/72B01J23/34B01J23/52B01J23/83B01J23/63B01J23/656B01J23/89C02F1/72
CPCB01J23/10B01J23/745B01J23/72B01J23/34B01J23/52B01J23/83B01J23/63B01J23/6562B01J23/894B01J23/8906B01J23/8926C02F1/722C02F1/725C02F2101/345C02F2305/026Y02W10/37
Inventor 陈航宁郭宗英郑育元许丹丹吴粮华
Owner CHINA PETROLEUM & CHEM CORP
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