CN114367292A - Normal catalyst for treating industrial wastewater and application thereof - Google Patents
Normal catalyst for treating industrial wastewater and application thereof Download PDFInfo
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- CN114367292A CN114367292A CN202210095438.7A CN202210095438A CN114367292A CN 114367292 A CN114367292 A CN 114367292A CN 202210095438 A CN202210095438 A CN 202210095438A CN 114367292 A CN114367292 A CN 114367292A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 59
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 27
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims abstract description 11
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 7
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 41
- 229920000642 polymer Polymers 0.000 claims description 25
- 239000002351 wastewater Substances 0.000 claims description 23
- 239000007864 aqueous solution Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 15
- 238000001354 calcination Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 239000008247 solid mixture Substances 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000012065 filter cake Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000003837 high-temperature calcination Methods 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 9
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000002161 passivation Methods 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Images
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
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B01J35/60—
-
- 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
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- 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
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
Abstract
The invention provides a normal catalyst for treating industrial wastewater and application thereof, belonging to the technical field of catalyst preparation and application. The normal catalyst consists of carbon powder, aluminum silicate, zinc nitrate, manganese dioxide, nickel nitrate, ferroferric oxide and an adhesive. The normal state catalyst prepared by the invention has the characteristics of high active component content, large specific surface area of the carrier, high reaction rate, high mechanical strength, strong fixity, long service life, high and stable COD removal rate, no hardening, no passivation, no secondary pollution and the like after long-term use.
Description
Technical Field
The invention relates to the technical field of catalyst preparation, in particular to a normal catalyst for treating industrial wastewater and application thereof.
Background
A large amount of organic wastewater, such as pharmaceutical wastewater, pesticide wastewater, coal chemical wastewater and the like, is generated in the production process of industrial products. The general substances of the wastewater have the characteristics of complex composition, high COD, high salt content, poor biodegradability and the like, and part of the wastewater has toxicity. If such direct discharge is carried out, serious water pollution is caused.
At present, most industrial wastewater treatment adopts one or more combined processes of Fenton oxidation, iron-carbon micro-electrolysis, electrocatalytic oxidation, wet oxidation, biochemical treatment, membrane system and chemical coagulation flocculation. The above processes mainly exist: low treatment efficiency, unstable system operation, high investment cost, high operation cost, secondary pollution and the like.
The reaction mechanism of the catalytic oxidation process: the oxidant (hydrogen peroxide or ozone) generates hydroxyl free radicals with strong oxidizing ability under the catalysis of the catalyst, the hydroxyl free radicals react with organic matters in the wastewater, and organic free radicals generated in the reaction can continuously participate in the chain reaction of the hydroxyl free radicals, or the organic peroxide free radicals are generated and then further undergo oxidative decomposition reaction until the hydroxyl free radicals are degraded into final products of carbon dioxide and water, so that the aim of oxidatively decomposing the organic matters is fulfilled.
The activated carbon is the most common carbon-based material, is composed of graphite microcrystals, has the advantages of multiple gaps, large specific surface area, long service life and the like, and is an economical and efficient choice when being used as a carrier of a catalyst. Therefore, it is necessary to provide a preparation method and application of a normal catalyst for treating industrial wastewater.
Disclosure of Invention
In view of the above, the invention provides a normal state catalyst for treating industrial wastewater, which solves the problems of low treatment efficiency, unstable system operation, high investment cost, high operation cost, secondary pollution, low content of active components of the catalyst, small specific surface area of a carrier, slow reaction rate, low mechanical strength, weak fixity, short service life, low and unstable COD removal rate, easy hardening after long-term use, easy passivation and the like of the prior art and the prior traditional catalyst.
The invention provides a normal catalyst for treating industrial wastewater, which is prepared from the following raw materials in percentage by mass:
preferably, the adhesive is prepared from the following raw materials in parts by weight:
60 parts of clay, 15 parts of a carboxymethyl cellulose aqueous solution with the mass concentration of 20%, 15 parts of water glass and 10 parts of a polyvinyl alcohol aqueous solution with the mass concentration of 20%.
The invention also aims to provide a preparation method of the normal catalyst for treating the industrial wastewater, which comprises the following steps:
the method comprises the following steps: weighing zinc nitrate and nickel nitrate according to a proportion, and adding the zinc nitrate and the nickel nitrate into water to prepare a mixed aqueous solution;
step two: weighing carbon powder in proportion, adding the carbon powder into the mixed aqueous solution obtained in the first step, and soaking in a thermostat at 50 ℃ for 12 hours;
step three: drying the filter cake after filtering to obtain a solid mixture;
step four: adding aluminum silicate, manganese dioxide and ferroferric oxide into the solid mixture according to the proportion, and fully mixing for 90min to obtain a first mixture;
step five: adding an adhesive into the mixture I according to the proportion, and fully mixing to obtain a mixture II;
step six: collecting a second mixture, putting the second mixture into a granulator, and making short columnar polymer by the granulator, wherein the surface of the columnar polymer is provided with a plurality of concave holes;
step seven: collecting the polymer prepared by the granulator, putting the polymer into an oven for baking, and taking out the polymer after baking to obtain a third mixture;
step eight: placing the mixture III into a high-temperature furnace for high-temperature calcination;
step nine: taking out the mixture IV and cooling to room temperature to obtain the catalyst of the invention.
Preferably, the temperature of the oven in the third step is controlled at 120 ℃, and the drying time is 6 h.
Preferably, the temperature of the oven in the seventh step is controlled at 150 ℃, and the drying time is 120 min.
Preferably, the step eight is to perform the calcination treatment in an oxygen-free environment, wherein the calcination temperature is 780-900 ℃, and the calcination time is 6 h.
The invention also provides application of the normal catalyst for treating the industrial wastewater, and the application method comprises the steps of adding the catalyst into the wastewater, then adjusting the pH value of the wastewater to 5-6, adding hydrogen peroxide, uniformly mixing, and then carrying out an aeration reaction.
The invention also provides application of the normal catalyst for treating the industrial wastewater, and the application method comprises the steps of adding the catalyst into the wastewater, then adjusting the pH value of the wastewater to be 6-9, and introducing ozone for reaction.
Compared with the prior art, the invention has the following beneficial effects:
the catalyst is prepared from carbon powder, zinc nitrate, nickel nitrate, aluminum silicate, manganese dioxide, ferroferric oxide and an adhesive, so that the tolerance of the catalyst to P, S is improved, the catalyst poisoning is prevented, the strength is improved, the specific surface area of carrier carbon powder is not influenced, the dispersion degree of active components can be enhanced, and the stability and the selectivity of the catalyst are further improved
The preparation method of the catalyst further ensures the high utilization rate of the active components in the catalyst, solves the problem of the loss rate of the catalyst and prevents secondary pollution.
The catalyst prepared by the invention has the characteristics of large specific surface area and high iodine value, is cylindrical in appearance, is not hardened after long-time use, and has high compressive strength and wear resistance. The catalyst has high roasting temperature and long roasting time in the preparation process, metal components are mixed firmly, and the metal components are not dissolved and fall off after long-time use.
Drawings
FIG. 1 shows a normal state catalyst for treating industrial wastewater prepared in example 1.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
A normal catalyst for treating industrial wastewater is prepared from the following raw materials in percentage by mass:
wherein the adhesive is composed of the following raw materials in parts by weight:
60 parts of clay, 15 parts of a carboxymethyl cellulose aqueous solution with the mass concentration of 20%, 15 parts of water glass and 10 parts of a polyvinyl alcohol aqueous solution with the mass concentration of 20%.
The preparation method of the normal catalyst for treating the industrial wastewater comprises the following steps:
the method comprises the following steps: weighing zinc nitrate and nickel nitrate according to a proportion, and adding the zinc nitrate and the nickel nitrate into water to prepare a mixed aqueous solution;
step two: weighing carbon powder in proportion, adding the carbon powder into the mixed aqueous solution obtained in the first step, and soaking in a thermostat at 50 ℃ for 12 hours;
step three: after filtering, drying the filter cake for 6h at 120 ℃ to obtain a solid mixture;
step four: adding aluminum silicate, manganese dioxide and ferroferric oxide into the solid mixture according to the proportion, and fully mixing for 90min to obtain a first mixture;
step five: adding an adhesive into the mixture I according to the proportion, and fully mixing to obtain a mixture II;
step six: collecting a second mixture, putting the second mixture into a granulator, and making short columnar polymer by the granulator, wherein the surface of the columnar polymer is provided with a plurality of concave holes;
step seven: collecting the polymer prepared by the granulator, putting the polymer into an oven for baking, wherein the temperature of the oven is controlled at 150 ℃, the baking time is 120min, and taking out the polymer after baking to be used as a mixture III;
step eight: placing the mixture III into a high-temperature furnace for high-temperature calcination, wherein the calcination temperature is 780 ℃ and the calcination time is 6 hours;
step nine: taking out the mixture IV and cooling to room temperature to obtain the catalyst of the invention.
Example 2
A normal catalyst for treating industrial wastewater is prepared from the following raw materials in percentage by mass:
wherein the adhesive is composed of the following raw materials in parts by weight:
60 parts of clay, 15 parts of a carboxymethyl cellulose aqueous solution with the mass concentration of 20%, 15 parts of water glass and 10 parts of a polyvinyl alcohol aqueous solution with the mass concentration of 20%.
The preparation method of the normal catalyst for treating the industrial wastewater comprises the following steps:
the method comprises the following steps: weighing zinc nitrate and nickel nitrate according to a proportion, and adding the zinc nitrate and the nickel nitrate into water to prepare a mixed aqueous solution;
step two: weighing carbon powder in proportion, adding the carbon powder into the mixed aqueous solution obtained in the first step, and soaking in a thermostat at 50 ℃ for 12 hours;
step three: after filtering, drying the filter cake for 6h at 120 ℃ to obtain a solid mixture;
step four: adding aluminum silicate, manganese dioxide and ferroferric oxide into the solid mixture according to the proportion, and fully mixing for 90min to obtain a first mixture;
step five: adding an adhesive into the mixture I according to the proportion, and fully mixing to obtain a mixture II;
step six: collecting a second mixture, putting the second mixture into a granulator, and making short columnar polymer by the granulator, wherein the surface of the columnar polymer is provided with a plurality of concave holes;
step seven: collecting the polymer prepared by the granulator, putting the polymer into an oven for baking, wherein the temperature of the oven is controlled at 150 ℃, the baking time is 120min, and taking out the polymer after baking to be used as a mixture III;
step eight: placing the mixture III into a high-temperature furnace for high-temperature calcination, wherein the calcination temperature is 800 ℃, and the calcination time is 6 hours;
step nine: taking out the mixture IV and cooling to room temperature to obtain the catalyst of the invention.
Example 3
A normal catalyst for treating industrial wastewater is prepared from the following raw materials in percentage by mass:
wherein the adhesive is composed of the following raw materials in parts by weight:
60 parts of clay, 15 parts of a carboxymethyl cellulose aqueous solution with the mass concentration of 20%, 15 parts of water glass and 10 parts of a polyvinyl alcohol aqueous solution with the mass concentration of 20%.
The preparation method of the normal catalyst for treating the industrial wastewater comprises the following steps:
the method comprises the following steps: weighing zinc nitrate and nickel nitrate according to a proportion, and adding the zinc nitrate and the nickel nitrate into water to prepare a mixed aqueous solution;
step two: weighing carbon powder in proportion, adding the carbon powder into the mixed aqueous solution obtained in the first step, and soaking in a thermostat at 50 ℃ for 12 hours;
step three: after filtering, drying the filter cake for 6h at 120 ℃ to obtain a solid mixture;
step four: adding aluminum silicate, manganese dioxide and ferroferric oxide into the solid mixture according to the proportion, and fully mixing for 90min to obtain a first mixture;
step five: adding an adhesive into the mixture I according to the proportion, and fully mixing to obtain a mixture II;
step six: collecting a second mixture, putting the second mixture into a granulator, and making short columnar polymer by the granulator, wherein the surface of the columnar polymer is provided with a plurality of concave holes;
step seven: collecting the polymer prepared by the granulator, putting the polymer into an oven for baking, wherein the temperature of the oven is controlled at 150 ℃, the baking time is 120min, and taking out the polymer after baking to be used as a mixture III;
step eight: placing the mixture III into a high-temperature furnace for high-temperature calcination, wherein the calcination temperature is 900 ℃, and the calcination time is 6 hours;
step nine: taking out the mixture IV and cooling to room temperature to obtain the catalyst of the invention.
The specification parameters of the catalysts for ozonation of industrial wastewater prepared in examples 1 to 3 are shown in Table 1,
TABLE 1
| Example 1 | Example 2 | Example 3 | |
| Catalyst active ingredient content (%) | 4.3 | 4.5 | 4.4 |
| Abrasion resistance of catalyst (%) | 98 | 96 | 97 |
| Compressive strength of catalyst (N/cm)2) | 157 | 158 | 156 |
| Iodine value of catalyst (mg/g) | 980 | 950 | 970 |
| Catalyst void fraction (%) | 40 | 42 | 43 |
Example 4
300mL of wastewater is measured by a beaker, 600mL of the catalyst prepared in the embodiment 2 is added, then the pH value of the wastewater is adjusted to 5-6, 1mL of 27.5 wt% hydrogen peroxide is added and uniformly mixed, and aeration reaction is carried out for 1-2 h.
Example 5
300mL of wastewater is measured by a beaker, 600mL of the catalyst prepared in the embodiment 2 is added, the pH of the wastewater is adjusted to 6-9, an ozone generator is started to be filled with ozone, the flow of the ozone is 200mg/L, and the reaction is carried out for 1-2 hours.
Examples 4 and 5 application data as in table 2,
TABLE 2
Comparative example 1
Fenton oxidation method: taking 300mL of wastewater by using a glass beaker, adjusting the pH of the wastewater to 2-3, adding 2mL of 10 wt% ferrous sulfate solution, then adding 0.3mL of 27.5 wt% hydrogen peroxide, and stirring for reaction for 1-2 h.
Comparative example 1 the data are as in table 3,
TABLE 3
Comparative example 2
Electrocatalytic oxidation: taking 300mL of wastewater by using a glass beaker, pouring the wastewater into an electrode tank, and reacting for 1-2 h.
Comparative example 2 the data are as in table 4,
TABLE 4
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A normal catalyst for treating industrial wastewater is characterized by being prepared from the following raw materials in percentage by mass:
2. the normal state catalyst for treating industrial wastewater according to claim 1, wherein the binder is composed of the following raw materials in parts by weight:
60 parts of clay, 15 parts of a carboxymethyl cellulose aqueous solution with the mass concentration of 20%, 15 parts of water glass and 10 parts of a polyvinyl alcohol aqueous solution with the mass concentration of 20%.
3. The method for preparing a normal state catalyst for treating industrial wastewater according to claim 1 or 2, comprising the steps of:
the method comprises the following steps: weighing zinc nitrate and nickel nitrate according to a proportion, and adding the zinc nitrate and the nickel nitrate into water to prepare a mixed aqueous solution;
step two: weighing carbon powder in proportion, adding the carbon powder into the mixed aqueous solution obtained in the first step, and soaking in a thermostat at 50 ℃ for 12 hours;
step three: drying the filter cake after filtering to obtain a solid mixture;
step four: adding aluminum silicate, manganese dioxide and ferroferric oxide into the solid mixture according to the proportion, and fully mixing for 90min to obtain a first mixture;
step five: adding an adhesive into the mixture I according to the proportion, and fully mixing to obtain a mixture II;
step six: collecting a second mixture, putting the second mixture into a granulator, and making short columnar polymer by the granulator, wherein the surface of the columnar polymer is provided with a plurality of concave holes;
step seven: collecting the polymer prepared by the granulator, putting the polymer into an oven for baking, and taking out the polymer after baking to obtain a third mixture;
step eight: placing the mixture III into a high-temperature furnace for high-temperature calcination;
step nine: taking out the mixture IV and cooling to room temperature to obtain the catalyst of the invention.
4. The method for preparing a normal-state catalyst for treating industrial wastewater according to claim 3, wherein the temperature of the oven in the third step is controlled at 120 ℃ and the drying time is 6 hours.
5. The method for preparing a normal-state catalyst for treating industrial wastewater according to claim 3, wherein the temperature of the oven in the seventh step is controlled at 150 ℃ and the drying time is 120 min.
6. The method for preparing a normal catalyst for treating industrial wastewater according to claim 3, wherein the step eight is calcination treatment in an oxygen-free environment, wherein the calcination temperature is 780-900 ℃, and the calcination time is 6 h.
7. The application of the normal catalyst for treating industrial wastewater according to claim 1 or 2, wherein the catalyst is added into the wastewater, the pH value of the wastewater is adjusted to 5-6, and hydrogen peroxide is added and uniformly mixed to perform an aeration reaction.
8. The application of the normal catalyst for treating the industrial wastewater as claimed in claim 1 or 2, wherein the catalyst is added into the wastewater, then the pH value of the wastewater is adjusted to 6-9, and ozone is introduced for reaction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210095438.7A CN114367292B (en) | 2022-01-26 | 2022-01-26 | Normal catalyst for treating industrial wastewater and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210095438.7A CN114367292B (en) | 2022-01-26 | 2022-01-26 | Normal catalyst for treating industrial wastewater and application thereof |
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| CN114367292A true CN114367292A (en) | 2022-04-19 |
| CN114367292B CN114367292B (en) | 2024-01-09 |
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| CN115779921A (en) * | 2022-12-09 | 2023-03-14 | 江苏益非斯环境科技有限公司 | Carbon-based catalyst and preparation method thereof |
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| CN105498777A (en) * | 2015-12-06 | 2016-04-20 | 苏州科环环保科技有限公司 | Preparation method of metal loaded catalyst with aluminum silicate as carrier |
| CN108545823A (en) * | 2018-03-12 | 2018-09-18 | 江苏蓝必盛化工环保股份有限公司 | A kind of bio-carrier charcoal and preparation method thereof containing various trace elements |
| CN110586126A (en) * | 2019-09-29 | 2019-12-20 | 威海中远造船科技有限公司 | Catalyst and method for sewage treatment at normal temperature and normal pressure |
| CN112093982A (en) * | 2020-09-11 | 2020-12-18 | 河北奥思德环保科技有限公司 | Treatment method of high-concentration organic wastewater |
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| CN105498777A (en) * | 2015-12-06 | 2016-04-20 | 苏州科环环保科技有限公司 | Preparation method of metal loaded catalyst with aluminum silicate as carrier |
| CN108545823A (en) * | 2018-03-12 | 2018-09-18 | 江苏蓝必盛化工环保股份有限公司 | A kind of bio-carrier charcoal and preparation method thereof containing various trace elements |
| CN110586126A (en) * | 2019-09-29 | 2019-12-20 | 威海中远造船科技有限公司 | Catalyst and method for sewage treatment at normal temperature and normal pressure |
| CN112093982A (en) * | 2020-09-11 | 2020-12-18 | 河北奥思德环保科技有限公司 | Treatment method of high-concentration organic wastewater |
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| CN115779921A (en) * | 2022-12-09 | 2023-03-14 | 江苏益非斯环境科技有限公司 | Carbon-based catalyst and preparation method thereof |
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