CN110339837A - A kind of efficient water ozone catalyst and its preparation method and application - Google Patents
A kind of efficient water ozone catalyst and its preparation method and application Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000003054 catalyst Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000011259 mixed solution Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 17
- 230000032683 aging Effects 0.000 claims abstract description 16
- 238000004898 kneading Methods 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 14
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 14
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 14
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 13
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 13
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 11
- 239000000440 bentonite Substances 0.000 claims abstract description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229960000892 attapulgite Drugs 0.000 claims abstract description 10
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 25
- 229910052593 corundum Inorganic materials 0.000 claims description 24
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 24
- 239000000243 solution Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 239000000084 colloidal system Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- -1 hydroxyl radical free radical Chemical class 0.000 abstract description 7
- 239000005416 organic matter Substances 0.000 abstract description 7
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006555 catalytic reaction Methods 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000006385 ozonation reaction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007172 homogeneous catalysis Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
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- 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/638—Pore volume more than 1.0 ml/g
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of efficient water ozone catalysts and its preparation method and application, and the aqueous solution of aluminum sulfate, sodium aluminate, ferrous sulfate is mixed, and obtained mixed solution obtains Fe/Al after gelatinization, aging, washing, drying, roasting2O3Particle, then it is mixed with bentonite and attapulgite, after kneading pugging, molding, drying, roasting, obtain the efficient water ozone catalyst.It can catalysis ozone fast decoupled, generate the hydroxyl radical free radical with Strong oxdiative, and then promote the decomposition of high stability organic matter in water, fast to the catalytic of ozone, degradation COD rate is high, and consumption ozone amount is few, using without secondary pollution.
Description
Technical field
The invention belongs to environmental technology fields, and in particular to a kind of efficient water ozone catalyst and preparation method thereof and answer
With.
Background technique
With social population constantly increase, water consumption is increasing in production and life by the mankind, produces a large amount of richness
Waste water (often representing its level of pollution with COD value) containing organic matter, very big harm is brought to environment, human health.Removal
Waste water organic matter reduces there are many ways to water body COD, with traditional processing method (flocculant method, absorption method, biochemical method, electricity
Chemical method etc.) processing waste water when, or be unable to reach national effluent quality requirement (such as level-one A mark: 50mg/L) or higher cost.
For the further treatment technique of waste water, mainly there is catalytic ozonation technology at present, wherein catalytic ozonation master
There is following mechanism: generating hydroxyl radical free radical (OH) in the decomposable process of ozone in water, hydroxyl radical free radical is to be currently known
Strongest oxidant in water, oxidizing potential reaches 2.8V, and the no selectivity of hydroxyl radical free radical, to almost all of organic in water
Instantaneous oxidation can all occur for object.
Independent ozonation technology has been widely used in water supply and sewage disposal process, but there is also many problems:
First is that Ozone Gas Mass Transfer Efficiency is low and extremely unstable in water, cause the utilization rate of ozone not high；Second is that the drop of Pre-Ozonation on Organic Matter
Solution has stronger selectivity；Third is that individually ozone oxidation is very low to the salinity of micro-polluted drinking water body, it is organic in water body
Object can only be oxidized to carboxylic acid, ketone, aldehydes small-molecule substance, and the toxicity of some intermediate products is even greater than source substance.It is catalyzed smelly
Oxygen oxidation technology is broadly divided into two major classes: one kind is the homogeneous catalysis ozone oxidation using metal ion as catalyst, one kind be with
Ultraviolet light, load active component etc. are the heterogeneous catalytic ozonation of catalyst.Homogeneous catalysis ozone oxidation is catalyzed due to existing
The problems such as agent is lost and introduces metal ion, receives certain limitation in water treatment applications.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of efficient water ozone catalyst and preparation method thereof and answering
With.It promotes ozone fast decoupled, generates the hydroxyl radical free radical with Strong oxdiative, significantly improves high stability organic matter in water
Discomposing effect makes organic matter difficult to degrade in sewage be easier to be oxidized to carbon dioxide and water, while improving biodegradability.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of preparation method of efficient water ozone catalyst, the preparation method comprises the following steps:
(1) aluminum sulfate solution, sodium aluminate solution and ferrous sulfate solution are mixed to get mixed solution, heating stirring is made
Colloid；
(2) gained colloid carries out aging, and after the completion of aging, product is washed, dry；
(3) material after drying is roasted, obtains Fe/Al2O3Particle；
(4) by Fe/Al2O3Particle is mixed with bentonite and attapulgite, after kneading pugging, molding, drying, roasting, is obtained
To the efficient water ozone catalyst.
In step (1), in the mixed solution, aluminum sulfate, sodium aluminate, ferrous sulfate mass ratio be 1:(2.5~
4.5): (0.05~0.2), preferably 1:3.9:0.1；In the mixed solution, the mass volume ratio of solute and solvent is 1:10
~15, preferably 1:10.
In step (1), the aluminum sulfate, ferrous sulfate, sodium aluminate are technical grade.
In step (1), the condition of the heating stirring is 45~55 DEG C and is stirred to react 2~3h.
In step (2), the condition of the aging is 60~75 DEG C of 5~10h of aging；It is molten that the washing, which is with deionized water,
Agent is washed；The condition of the drying is to be dried overnight at 115~125 DEG C.
In step (3), the condition of the roasting is 350~550 DEG C of roasting temperature 4h.
In step (4), the bentonite, attapulgite, Fe/Al2O3The mass ratio of particle be 10~20:30~80:10~
35, it is preferable that mass ratio 10:55:35.
In step (4), the accounting of the bentonite and attapulgite partial size more than 200 mesh is greater than 90%.
In step (4), the time of the kneading pugging is 20~30min；It is described to be shaped to extrusion forming；The drying
Condition is to be dried overnight at 140~160 DEG C.
In step (4), the condition of the roasting is 650~750 DEG C of 3~4h of roasting.
The efficient water ozone catalyst that above-mentioned preparation method provided by the invention is prepared.
Application of the efficient water ozone catalyst that above-mentioned preparation method provided by the invention is prepared in water process.
In the preparation method of efficient water ozone catalyst provided by the invention, first of all for improve reaction homogeneity,
The aqueous solution of aluminum sulfate, sodium aluminate, ferrous sulfate is mixed, obtained mixed solution is through gelatinization, aging, washing, drying, roasting
After obtain Fe/Al2O3Particle, gained Fe/Al2O3Even particle size, specific surface area are greater than 150m2/ g, and pore volume is greater than
1.2mL/g, Fe are evenly distributed on Al2O3On.This Fe/Al2O3Particle has macropore volume and low bulk density.By Fe/
Al2O3Catalyst is got product after particle and bentonite and the pugging of attapulgite kneading, drying and roasting.Wherein attapulgite has
Cellular hole facilitates ozone and enters in catalyst and Fe/Al2O3Reaction promotes ozone to decompose, and bentonite is as bonding
Agent improves the intensity of catalyst.It is used in sewage treatment, the efficient water ozone catalyst that the present invention obtains can be catalyzed smelly
Oxygen fast decoupled generates the hydroxyl radical free radical with Strong oxdiative, and then promotes the decomposition of high stability organic matter in water.
Compared with prior art, efficient water ozone catalyst provided by the invention, it is fast to the catalytic of ozone,
COD rate of degrading is high, and consumption ozone amount is few, will not generate secondary pollution after use.
Detailed description of the invention
Fig. 1 is production technological process of the invention；
Fig. 2 is sewage disposal device schematic diagram.
Specific embodiment
The following describes the present invention in detail with reference to examples.
Embodiment 1
A kind of preparation method of efficient water ozone catalyst, comprising the following steps:
(1) aluminum sulfate solution, sodium aluminate solution and ferrous sulfate solution are mixed to get mixed solution, in mixed solution,
Aluminum sulfate, sodium aluminate, ferrous sulfate mass ratio be 1:3.9:0.1；In the mixed solution, the mass body of solute and solvent
Product is than being made colloid for 1:10,45 DEG C of heating stirring 3h；
(2) gained colloid is in 60 DEG C of aging 10h, and after the completion of aging, product is washed through deionized water, then at 120 DEG C
It is dried overnight；
(3) 4h will be stopped at 450 DEG C of material after drying to roast, obtain Fe/Al2O3Particle, Fe/Al2O3Ratio table
Area is 177m2/ g, and pore volume is 1.34mL/g, is tested and analyzed through ICP-OES, wherein Fe content is (with Fe2O3Meter) be
1.1%, aluminium content is (with Al2O3Meter) it is 98.9%；
(4) by Fe/Al2O3Particle is mixed with bentonite and attapulgite according to mass ratio 35:10:55, in kneading machine kneading
Pugging 20min, resulting material are dried overnight, after 720 DEG C of roasting 3h at extrusion forming, 150 DEG C, can be obtained described efficient
Water body ozone catalyst.
Embodiment 2
A kind of preparation method of efficient water ozone catalyst, comprising the following steps:
(1) aluminum sulfate solution, sodium aluminate solution and ferrous sulfate solution are mixed to get mixed solution, in mixed solution,
Aluminum sulfate, sodium aluminate, ferrous sulfate mass ratio be 1:2.5:0.2；In the mixed solution, the mass body of solute and solvent
Product is than being made colloid for 1:12,45 DEG C of heating stirring 2h；
(2) gained colloid is in 75 DEG C of aging 5h, and after the completion of aging, product is washed through deionized water, then the mistake at 120 DEG C
Night is dry；
(3) 4h will be stopped at 350 DEG C of material after drying to roast, obtain Fe/Al2O3Particle, Fe/Al2O3Ratio table
Area is 151m2/ g, and pore volume is 1.24mL/g, is tested and analyzed through ICP-OES, wherein Fe content is (with Fe2O3Meter) be
3%, aluminium content is (with Al2O3Meter) it is 97%；
(4) by Fe/Al2O3Particle is mixed with bentonite and attapulgite according to mass ratio 35:10:55, in kneading machine kneading
Pugging 30min, resulting material are dried overnight, after 650 DEG C of roasting 3h at extrusion forming, 150 DEG C, can be obtained described efficient
Water body ozone catalyst.
Embodiment 3
A kind of preparation method of efficient water ozone catalyst, comprising the following steps:
(1) aluminum sulfate solution, sodium aluminate solution and ferrous sulfate solution are mixed to get mixed solution, in mixed solution,
Aluminum sulfate, sodium aluminate, ferrous sulfate mass ratio be 1:4.5:0.05；In the mixed solution, the quality of solute and solvent
Volume ratio is 1:10, and colloid is made in 45 DEG C of heating stirring 3h；
(2) gained colloid is in 63 DEG C of aging 7h, and after the completion of aging, product is washed through deionized water, then the mistake at 120 DEG C
Night is dry；
(3) 4h will be stopped at 550 DEG C of material after drying to roast, obtain Fe/Al2O3Particle, Fe/Al2O3Ratio table
Area is 160m2/ g, and pore volume is 1.21mL/g, is tested and analyzed through ICP-OES, wherein Fe content is (with Fe2O3Meter) be
0.5%, aluminium content is (with Al2O3Meter) it is 99.5%；
(4) by Fe/Al2O3Particle is mixed with bentonite and attapulgite according to mass ratio 35:10:55, in kneading machine kneading
Pugging 27min, resulting material are dried overnight, after 750 DEG C of roasting 3h at extrusion forming, 150 DEG C, can be obtained described efficient
Water body ozone catalyst.
Comparative example 1
A kind of preparation method of water body ozone catalyst, comprising the following steps:
1) 98 parts of alumina powder is taken, 2 parts of ferrous sulfate is added, is added in 400 parts of water, reaction temperature is 45 DEG C,
Reaction time 3h；
2) it filters, is dry: being dried overnight at after material filtering made from step 1) 120 DEG C；
3) primary roasting: material made from step 2) is stopped to 4h at 450 DEG C and is roasted；
4) kneading pugging: material kneading machine after step 3) once roasting is subjected to kneading, the kneading time is 20min；
5) it forms: by material extrusion molding made from step 4)；
6) dry: the material of step 5) is dried overnight at 150 DEG C；
7) after baking: by the material of step 6) after 720 DEG C of progress after bakings, calcining time 3h, finished product.
The water body ozone catalyst that the various embodiments described above and comparative example obtain contains COD in equipment as shown in Figure 2
Amount is that the sewage of 102mg/L is handled, the condition of water process are as follows: ozone concentration 5mg/L, ozone flow are 0.8L/min,
Flow of inlet water is 40mL/min, and catalyst loading is 400 grams, hydraulic detention time 1h.The results are shown in Table 1:
Table 1
It can be seen that from above-mentioned table 1 under identical condition, the water body ozone catalyst that various embodiments of the present invention obtain
Significant effect be better than comparative example, when 30min, the removal rate of COD has reached 49% or more.
It is above-mentioned to be retouched in detail referring to embodiment to what a kind of efficient water ozone catalyst and its preparation method and application carried out
It states, is illustrative without being restrictive, several embodiments can be enumerated according to limited range, therefore do not departing from this
Change and modification under invention general plotting should belong within protection scope of the present invention.
Claims (10)
1. a kind of preparation method of efficient water ozone catalyst, which is characterized in that the preparation method comprises the following steps:
(1) aluminum sulfate solution, sodium aluminate solution and ferrous sulfate solution are mixed to get mixed solution, glue is made in heating stirring
Body；
(2) gained colloid carries out aging, and after the completion of aging, product is washed, dry；
(3) material after drying is roasted, obtains Fe/Al2O3Particle；
(4) by Fe/Al2O3Particle is mixed with bentonite and attapulgite, after kneading pugging, molding, drying, roasting, obtains institute
State efficient water ozone catalyst.
2. preparation method according to claim 1, which is characterized in that in step (1), in the mixed solution, aluminum sulfate,
Sodium aluminate, ferrous sulfate mass ratio be 1:(2.5~4.5): (0.05~0.2)；In the mixed solution, solute and solvent
Mass volume ratio be 1:10~15.
3. preparation method according to claim 1 or 2, which is characterized in that in step (1), the condition of the heating stirring
2~3h is stirred to react for 45~55 DEG C.
4. preparation method according to claim 1 or 2, which is characterized in that in step (2), the condition of the aging is 60
~75 DEG C of 5~10h of aging；The washing is to be washed by solvent of deionized water；The condition of the drying is 115~125
It is dried overnight at DEG C.
5. preparation method according to claim 1 or 2, which is characterized in that in step (3), the condition of the roasting is 350
~550 DEG C of roasting temperature 4h.
6. preparation method according to claim 1 or 2, which is characterized in that in step (4), the bentonite, concave convex rod
Soil, Fe/Al2O3The mass ratio of particle is 10~20:30~80:10~35.
7. preparation method according to claim 1 or 2, which is characterized in that in step (4), the time of the kneading pugging
For 20~30min；It is described to be shaped to extrusion forming；The condition of the drying is to be dried overnight at 140~160 DEG C.
8. preparation method according to claim 1 or 2, which is characterized in that in step (4), the condition of the roasting is 650
~750 DEG C of 3~4h of roasting.
9. the efficient water ozone catalyst that preparation method according to any one of claims 1 to 8 is prepared.
10. the efficient water ozone catalyst that preparation method according to any one of claims 1 to 8 is prepared is in water
Application in processing.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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