CN114471523B - Organic sewage oxidation treatment catalyst and preparation method thereof - Google Patents
Organic sewage oxidation treatment catalyst and preparation method thereof Download PDFInfo
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- CN114471523B CN114471523B CN202210168876.1A CN202210168876A CN114471523B CN 114471523 B CN114471523 B CN 114471523B CN 202210168876 A CN202210168876 A CN 202210168876A CN 114471523 B CN114471523 B CN 114471523B
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- 239000010865 sewage Substances 0.000 title claims abstract description 58
- 239000003054 catalyst Substances 0.000 title claims abstract description 52
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 43
- 230000003647 oxidation Effects 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000000843 powder Substances 0.000 claims abstract description 42
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 239000002245 particle Substances 0.000 claims abstract description 29
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims description 15
- 239000003960 organic solvent Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 230000003064 anti-oxidating effect Effects 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 239000013543 active substance Substances 0.000 abstract description 9
- 239000002105 nanoparticle Substances 0.000 abstract description 7
- 238000004873 anchoring Methods 0.000 abstract description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 10
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000011149 active material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002289 effect on microbe Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- B01J35/23—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/08—Treatment of wastewater in the sewer, e.g. to reduce grease, odour
Abstract
An organic sewage oxidation catalyst comprises a porous aluminum substrate, wherein active substances are loaded on the surface of the porous aluminum substrate, and the active substances comprise worm-shaped nano Al 2 O 3 Powder particles and anchoring at nano Al 2 O 3 CeO on powder particles 2 A nanoparticle; ceO (CeO) 2 1% -5% of the total weight of the nanoparticle active substances. The organic sewage oxidation treatment catalyst can effectively remove micromolecular organic matters in sewage, and can treat flowing sewage, so that the sewage treatment efficiency is improved.
Description
Technical Field
The invention relates to a sewage treatment material, in particular to an organic sewage oxidation treatment catalyst and a preparation method thereof.
Background
In the sewage treatment, ozone or hydrogen peroxide is often used for oxidation treatment, and the oxidation treatment of the ozone or the hydrogen peroxide can decompose a large amount of organic substances in the sewage, however, after the ozone or the hydrogen peroxide treatment, a few micro-organic substances with small molecular weight remain, and the micro-organic substances have small molecular weight and small diameter, so that the micro-organic substances are difficult to remove.
In order to remove the micro-organisms, an oxidation catalyst is often added, and the existing oxidation catalyst is often in a powder form or a spherical form, so that the oxidation catalyst needs to be fully contacted with sewage when in use. After sewage treatment is completed, the catalyst needs to be recovered, the recovery of the powdery catalyst is difficult, secondary pollution is easily caused to the treated water, and a large amount of catalyst powder is inevitably separated from particles when sewage is mixed, so that secondary pollution is caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the catalyst for the oxidation treatment of the organic sewage, which is very convenient to recycle and can be used for carrying out the oxidation treatment on the sewage in flowing sewage. The catalyst has good treatment effect on micro-organisms.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an organic sewage oxidation treatment catalyst comprises a porous aluminum substrate, wherein the surface of the porous aluminum substrate is loaded with active substances, and the active substances comprise worm-shaped nano Al 2 O 3 Powder particles and anchoring at nano Al 2 O 3 CeO on powder particles 2 A nanoparticle; the CeO 2 1% -5% of the total weight of the nanoparticle active substances.
In the above catalyst for oxidation treatment of organic wastewater, preferably, the porous aluminum substrate comprises micron-sized aluminum powder and millimeter-sized aluminum powder, and the micron-sized aluminum powder and millimeter-sized aluminum powder are sintered together to form the aluminum substrate with a thickness of less than 10 millimeters.
In the above catalyst for oxidation treatment of organic wastewater, preferably, the particle size of the millimeter-sized aluminum powder is less than 2 millimeters.
In the above catalyst for oxidation treatment of organic wastewater, preferably, the weight of the micron-sized aluminum powder is less than one ten thousandth of the weight of the millimeter-sized aluminum powder.
The preparation process of organic sewage oxidizing catalyst includes the following steps;
1) Preparing a porous aluminum substrate;
2) Preparation of vermiform nano Al 2 O 3 Powder particles;AlCl is added 3 ·6H 2 Adding O powder into organic solvent, magnetically stirring until AlCl 3 ·6H 2 The O powder is completely dissolved to obtain 0.2-0.8mol/L AlCl 3 A solution;
dropwise adding ammonia water solution to the mixture of step->AlCl in (C) 3 Precipitation of precipitate Al (OH) from the solution 3 ；
The obtained precipitate Al (OH) 3 Drying at a temperature of not more than 80deg.C;
step->Oven dried Al (OH) 3 Calcining at 550-1200 deg.c for 0.5-2 hr to obtain worm-like nanometer Al 2 O 3 Powder particles;
3) Nano Al obtained in the step 2) is added 2 O 3 The powder particles are impregnated with 0.1mol/L to 0.5mol/L of Ce (NO) 3 ) 3 ·6H 2 Soaking in O solution, and taking out;
4) Impregnating step 3) with Ce (NO) 3 ) 3 Nano Al of (2) 2 O 3 Powder particles, oven-dried at a temperature of not more than 80 ℃;
5) Nano Al in the step 4) is added 2 O 3 Calcining the powder particles at 600-800 ℃ for more than 12 hours to obtain the organic sewage oxidation treatment catalyst powder;
6) Sintering the organic sewage oxidation treatment catalyst powder obtained in the step 5) on the porous aluminum substrate prepared in the step 1).
The preparation method of the catalyst for oxidation treatment of organic sewage, preferably, the step 6) comprises the following steps of;
adding the organic sewage oxidation treatment catalyst powder into an organic solvent, and stirring and dispersing uniformly;
b, immersing the porous aluminum substrate in the organic solvent in the step A, ultrasonically oscillating for more than 20 minutes, taking out and drying;
c, preserving the heat of the porous aluminum substrate treated in the step B for 1-3 hours at the temperature of 500-660 ℃.
In the above method for preparing the catalyst for oxidation treatment of organic sewage, preferably, the organic solvent in the step 2) includes an aqueous solution of methanol, ethanol, propanol or acetone with a volume fraction of more than 80%.
In the above method for preparing the catalyst for oxidation treatment of organic wastewater, preferably, the concentration of the aqueous ammonia solution in the step 2) is 0.1-0.15mol/L. Preparation of porous aluminum substrate
In the above method for preparing an organic wastewater oxidation catalyst, preferably, the preparing of the porous aluminum substrate includes the steps of;
uniformly dispersing micron-sized aluminum powder and millimeter-sized aluminum powder in an organic solvent and forming aluminum powder slurry;
b, shaping the thick slurry obtained in the step a;
c, carrying out heat treatment on the formed sticky slurry obtained in the step 2) under the condition of an anti-oxidation atmosphere; the heat treatment temperature is 550-660 ℃, and the heat treatment time is 30min-2h.
Compared with the prior art, the invention has the advantages that: the organic sewage oxidation treatment catalyst can effectively remove micromolecular organic matters in sewage, and can treat flowing sewage, so that the sewage treatment efficiency is improved.
Drawings
FIG. 1 shows a vermicular formNano Al of insect structure 2 O 3 TEM image of powder particles.
Detailed Description
The present invention will be described more fully hereinafter with reference to the preferred embodiments for the purpose of facilitating understanding of the present invention, but the scope of protection of the present invention is not limited to the specific embodiments described below.
Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present invention.
Example 1
An organic sewage oxidation catalyst comprises a porous aluminum substrate, wherein active substances are sintered on the surface of the porous aluminum substrate, and the active substances comprise worm-shaped nano Al 2 O 3 Powder particles and anchoring at nano Al 2 O 3 CeO on powder particles 2 A nanoparticle; ceO (CeO) 2 About 5% of the total weight of the nanoparticle active material.
In this embodiment, the porous aluminum substrate includes micron-sized aluminum powder and millimeter-sized aluminum powder, which are sintered together to form an aluminum substrate having a thickness of less than 5 millimeters. The particle size of the millimeter-sized aluminum powder in the embodiment is between 0.1 and 2 millimeters; the weight of the micron-sized aluminum powder is less than one ten thousandth of the weight of the millimeter-sized aluminum powder.
The catalyst for oxidation treatment of organic sewage in this embodiment is suitable for use in the latter stage of sewage treatment, and the sewage needs to be filtered to remove the sludge and macromolecular organic matters, otherwise the sludge and macromolecular organic matters easily block the porous aluminum substrate or cover the active matters on the porous aluminum substrate, thereby reducing the catalytic efficiency.
The catalyst for the oxidation treatment of organic sewage in this embodiment needs to be matched with ozone or hydrogen peroxide when in use, and mainly has a catalytic effect when the ozone or hydrogen peroxide is used for carrying out oxidation reaction on organic matters. When in use, two catalysts can be arranged along a pipeline through which sewage flows at a distance of 2-10 cm, and ozone is introduced between the two catalysts. After the ozone is dispersed in the sewage, the organic matters are oxidized on the catalyst, so that the organic matters in the sewage are decomposed.
In this embodiment, when sewage slowly flows through the catalyst, under the oxidation action of ozone, small molecular organic matters in the sewage are decomposed, and under the action of the catalyst, ozone generates a large number of hydroxyl radicals, and the hydroxyl radicals perform oxidative decomposition reaction on the small molecular organic matters in the sewage. In this embodiment, the active material is sintered on the porous aluminum substrate, so that there is no problem in recovering the catalyst, and the porous aluminum substrate is directly taken out from the pipe when the catalyst activity is lowered and replacement is required. When in use, the active substances can not be dispersed into sewage, and no secondary pollution is caused.
The embodiment also provides a preparation method of the catalyst for the oxidation treatment of the organic sewage, which comprises the following steps of;
1) Preparing a porous aluminum substrate;
uniformly dispersing micron-sized aluminum powder and millimeter-sized aluminum powder in an organic solvent and forming aluminum powder slurry;
b, shaping the thick slurry obtained in the step a;
c, carrying out heat treatment on the formed sticky slurry obtained in the step 2) under the condition of an anti-oxidation atmosphere; the heat treatment temperature is 550-660 ℃, and the heat treatment time is 30min-2h.
In this embodiment, the melting temperature of aluminum is 660 degrees celsius, and the heat treatment is performed at 550-660 degrees celsius for 30min-2h, at which time aluminum powder particles will begin to melt but not completely melt, and aluminum powder particles will sinter together to form a porous aluminum substrate. The porous aluminum substrate has smaller gaps through which small molecular organic substances can pass.
2) Preparation of vermiform nano Al 2 O 3 Powder particles;AlCl is added 3 ·6H 2 Adding O powder into 85% ethanol solution, and magnetically stirring until AlCl 3 ·6H 2 The O powder is completely dissolved to obtain 0.5mol/L AlCl 3 A solution;
dropwise adding ammonia water solution to the mixture of step->AlCl in (C) 3 Precipitation of precipitate Al (OH) from the solution 3 . In this example, the concentration of the aqueous ammonia solution was 0.15mol/L; when preparing ammonia water, dilute with ethanol solution.
The obtained precipitate Al (OH) 3 Drying at a temperature of not more than 80deg.C;
step->Oven dried Al (OH) 3 Calcining at 1200deg.C for 1 hr to obtain vermicular nanometer Al as shown in figure 1 2 O 3 Powder particles;
3) Nano Al obtained in the step 2) is added 2 O 3 The powder particles were impregnated with 0.5mol/L Ce (NO) 3 ) 3 ·6H 2 Soaking in O solution, and taking out;
4) Impregnating step 3) with Ce (NO) 3 ) 3 Nano Al of (2) 2 O 3 Powder particles, oven-dried at a temperature of not more than 80 ℃;
5) Nano Al in the step 4) is added 2 O 3 Calcining the powder particles at 600-800 ℃ for more than 12 hours to obtain the organic sewage oxidation treatment catalyst powder;
6) Sintering the organic sewage oxidation treatment catalyst powder obtained in the step 5) on the porous aluminum substrate prepared in the step 1).
The specific step of the step 6) is that A adds the organic sewage oxidation treatment catalyst powder into the organic solvent, and the mixture is stirred and dispersed uniformly;
b, immersing the porous aluminum substrate in the organic solvent in the step A, ultrasonically oscillating for more than 20 minutes, taking out and drying;
c, preserving the heat of the porous aluminum substrate treated in the step B for 1-3 hours at the temperature of 500-660 ℃.
In this example, the organic wastewater oxidation catalyst powder was sintered on a porous aluminum substrate. CeO in active material 2 Nanoparticles anchored at nano Al in worm structure 2 O 3 Nano Al with worm structure on powder particles 2 O 3 When the powder particles are sintered, the micron-sized aluminum powder particles on the porous aluminum substrate are in a state of just beginning to melt, so the nano Al with a worm structure 2 O 3 The powder is sintered and fixed on the porous aluminum substrate. The active material is supported on the surface of the porous aluminum substrate by sintering.
The organic sewage oxidation treatment catalyst of the embodiment is used for treating municipal sewage, two organic sewage oxidation treatment catalysts are arranged on a pipeline of the organic sewage, the distance between the two catalysts is 5 cm, ozone is introduced between the two catalysts, and the sewage flow speed of the pipeline is 0.1m/s. The COD of the municipal sewage before treatment is 189mg/L, and the COD after sewage treatment is 11mg/L.
Claims (4)
1. A preparation method of an organic sewage oxidation treatment catalyst is characterized by comprising the following steps: comprises the following steps of;
1) Preparing a porous aluminum substrate; the porous aluminum substrate comprises micron-sized aluminum powder and millimeter-sized aluminum powder, and the micron-sized aluminum powder and the millimeter-sized aluminum powder are sintered together to form the aluminum substrate with the thickness of less than 10 millimeters;
2) Preparation of vermiform nano Al 2 O 3 Powder particles; (1) AlCl is added 3 ·6H 2 Adding O powder into organic solvent, magnetically stirring until AlCl 3 ·6H 2 The O powder is completely dissolved to obtain 0.2-0.8mol/L AlCl 3 A solution;
(2) dropwise adding ammonia water solution to AlCl in the step (1) 3 Precipitation of precipitate Al (OH) from the solution 3 ；
(3) The obtained precipitate Al (OH) 3 Drying at a temperature of not more than 80deg.C;
(4) drying the Al (OH) in the step (3) 3 Calcining at 550-1200 deg.c for 0.5-2 hr to obtain worm-like nanometer Al 2 O 3 Powder particles;
3) The worm-shaped nano Al obtained in the step 2) is prepared 2 O 3 The powder particles are impregnated with 0.1mol/L to 0.5mol/L of Ce (NO) 3 ) 3 ·6H 2 Soaking in O solution, and taking out;
4) Impregnating step 3) with Ce (NO) 3 ) 3 Nano Al of (2) 2 O 3 Powder particles, oven-dried at a temperature of not more than 80 ℃;
5) Calcining the material obtained in the step 4) at 600-800 ℃ for more than 12 hours to obtain organic sewage oxidation treatment catalyst powder;
6) Sintering the organic sewage oxidation treatment catalyst powder obtained in the step 5) on the porous aluminum substrate prepared in the step 1);
step 6) specifically comprises the following steps:
adding the organic sewage oxidation treatment catalyst powder into an organic solvent, and stirring and dispersing uniformly;
b, immersing the porous aluminum substrate in the organic solvent in the step A, ultrasonically oscillating for more than 20 minutes, taking out and drying;
c, preserving the heat of the porous aluminum substrate treated in the step B for 1-3 hours at the temperature of 500-660 ℃.
2. The method for preparing the catalyst for the oxidation treatment of organic sewage according to claim 1, wherein: the organic solvent in the step 2) comprises an aqueous solution of methanol, ethanol, propanol or acetone with the volume fraction of more than 80%.
3. The method for preparing the catalyst for the oxidation treatment of organic sewage according to claim 1, wherein: the concentration of the ammonia water solution in the step 2) is 0.1-0.15mol/L.
4. The method for preparing the catalyst for the oxidation treatment of organic sewage according to claim 1, wherein: the preparation of the porous aluminum substrate comprises the following steps of;
uniformly dispersing micron-sized aluminum powder and millimeter-sized aluminum powder in an organic solvent and forming aluminum powder slurry;
b, molding the thick slurry obtained in the step a;
c, carrying out heat treatment on the formed thick slurry obtained in the step b under the condition of an anti-oxidation atmosphere; the heat treatment temperature is 550-660 ℃, and the heat treatment time is 30-120 min.
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| CN202210168876.1A CN114471523B (en) | 2022-02-24 | 2022-02-24 | Organic sewage oxidation treatment catalyst and preparation method thereof |
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| CN1151878C (en) * | 2000-09-29 | 2004-06-02 | 北京大学 | Copper aluminium-cerium aluminium compound oxide combustion catalyst, its preparation and use |
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