CN106944053A - A kind of sludge carbon base type Fenton catalyst and its preparation method and application - Google Patents
A kind of sludge carbon base type Fenton catalyst and its preparation method and application Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 78
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 36
- 239000003054 catalyst Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000004913 activation Effects 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000003213 activating effect Effects 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 5
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 5
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000000197 pyrolysis Methods 0.000 claims description 26
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 11
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical group [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 9
- 238000001354 calcination Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000011592 zinc chloride Substances 0.000 claims description 8
- 239000012190 activator Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims description 4
- 206010013786 Dry skin Diseases 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000000987 azo dye Substances 0.000 abstract description 4
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 abstract description 2
- 229940043267 rhodamine b Drugs 0.000 abstract description 2
- 238000007873 sieving Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005554 pickling Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 239000002699 waste material Substances 0.000 description 7
- 230000004224 protection Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- -1 hydroxyl radical free radical Chemical class 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000007210 heterogeneous catalysis Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 235000011167 hydrochloric acid Nutrition 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 235000005074 zinc chloride Nutrition 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
- B01J23/70—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
- B01J35/64—Pore diameter
- B01J35/647—2-50 nm
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
- C02F2305/026—Fenton's reagent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Fire-Extinguishing Compositions (AREA)
- Treatment Of Sludge (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of preparation method of sludge carbon base type Fenton catalyst, it is using sludge as raw material, through pyrogenically prepared active carbon with high specific surface area, then using the activated carbon as carrier loaded iron high activated catalyst；The sludge first dries grinding sieving, activated with composite activating agent, the pyrogenically prepared sludge carbon of high temperature anaerobic is carried out with certain heating schedule after activation, the active sludge carbon of high-specific surface area is obtained by pickling, washing, drying, grinding, sieving, using the active sludge carbon as carrier, 1h is impregnated in ferrous sulfate, 24h is stirred, 12h is dried, the activated carbon after drying is calcined high activity sludge carbon-supported catalysts is made.The invention provides the effective ways that a kind of sludge is recycled, there is high specific surface area using catalyst produced by the present invention, avtive spot is more, therefore activity is high.Azo dyes rhodamine B in water removal can be effectively gone using catalyst of the present invention.
Description
Technical field
The invention belongs to utilization of waste as resource and technical field of environment pollution control.Specifically related to a kind of sludge carbon base
The preparation method and applications of type Fenton catalyst.
Background technology
Sludge carbon base type Fenton catalyst is with the increase of city and Industrial Wastewater Treatment amount, in processing sewage process
The sludge quantity of middle generation is also dramatically increased, and China has become global maximum sludge and produces state, what substantial amounts of sludge yield was brought
Environmental problem it is extremely serious.Therefore, the handling problems of sewage sludge turn into one of most important environmental problem.Traditional dirt
Sewage sludge processing method, such as ocean landfill, burning, have potential environmental risk to soil, underground water and air.From can hold
From the point of view of supervention exhibition, it is necessary to explore new method, to greatest extent to reuse sludge, and reduce as far as possible poisonous
Undesirable residue.Pyrolysis is then a kind of effective volume for reducing sludge and the Treatment of Sludge side for producing useful final products
Formula.
Fenton reactions are a kind of by way of hydroxyl radical free radical (OH) effectively degraded persistent organic pollutants.
However, some shortcomings are limited in homogeneous Fenton reaction widely using in the industry, such as limitation of pH value, and extremely difficult time
Receive.Therefore, heterogeneous Fenton catalyst is developed rapidly in recent years.Heterogeneous catalysis has non-corrosiveness, environment-friendly, easily
The advantages of recovery.At present, there are many problems in many heterogeneous catalysis, and such as substantial amounts of iron is leached and stability is poor.Therefore, have
The heterogeneous catalysis for having high catalytic activity and long-time stability is the key for improving catalytic efficiency and application.At present, not yet
Seeing has research and the report for preparing catalyst by way of first activating back loading using sludge.
The content of the invention
The technical problem to be solved in the present invention overcomes above-mentioned existing defect and deficiency there is provided a kind of in pyrolyzing sludge
The technology of sludge carbon base type Fenton catalyst is prepared simultaneously, and obtained catalyst is applied to Fenton-like degraded azo dyes etc.
Field of environment pollution control, realizes recycling sludge and " treatment of wastes with processes of wastes against one another ".
The first object of the present invention is to provide a kind of preparation method of sludge carbon base type Fenton catalyst, and it is with sludge
For raw material, with composite activating agent activated sludge, the gas produced is pyrolyzed in 500 ~ 600 DEG C as pore creating material using activator, prepared dirty
Mud activated carbon, using prepared active sludge carbon as carrier, using ferrous sulfate as catalyst source of iron, heat is carried out in 350 ~ 550 DEG C
Sludge carbon base type Fenton catalyst is made in solution.
The inventive method is further arranged to, and its preparation process includes：
（1）Pretreatment：Sludge is dried for 105 DEG C, 80 mesh sieves are crossed after attrition grinding；
（2）Activation：Weigh 6g sludge and add composite activating agent, activator is contacted mixing with excess sludge, be put into thermostatted water
Bathe and activation is shaken in oscillator；5h in 105 DEG C of baking ovens is put into dry；
（3）Pyrolysis：Material after above-mentioned activation is contained in into boat-shaped crucible to be placed in high temperature tubular resistor furnace, it is 10 to control the rate of heat addition
~ 20 DEG C/min, pyrolysis temperature is 500 ~ 600 DEG C, and pyrolysis time is logical N in 1.0 ~ 2.0h, experimentation2Protection；
（4）Post processing：After cooling, product is cleaned with hydrochloric acid, then is rinsed with 70 DEG C of distilled water to pH=6-7, then with super
Sound wave washer is cleaned, and is placed in drying baker and is dried at 80 DEG C, and grinding crosses 200 mesh sieves, obtains active sludge carbon powder-like
Product, as catalyst carrier；
（5）Load：10g sludge activity carbon powders are weighed, 30mL FeSO are added4Solution, impregnates, stirring, 105 DEG C of drying；
（6）Calcining：Above-mentioned loaded product is contained in into boat-shaped crucible to be placed in high temperature tubular resistor furnace, control the rate of heat addition for 10 ~
20 DEG C/min, pyrolysis temperature is 350 ~ 550 DEG C, and pyrolysis time is logical N in 2.0 ~ 3.0h, experimentation2Protection；
（7）Cleaning：Loaded product to electrical conductivity is cleaned with deionized water and keeps constant, 80 DEG C of dryings to sludge carbon base class
Fenton catalyst；
The inventive method is further arranged to, above-mentioned steps（2）Middle composite activating agent is ZnCl2/Ca(OH)2, wherein, dewatered sludge
With ZnCl2（5mol/ L）Solid-liquid mass ratio is 1:1 ~ 2 (g/mL), Ca (OH)2For 4 ~ 8wt. % dewatered sludge quality.
The inventive method is further arranged to, above-mentioned steps（2）In, activation temperature be 20 ~ 25 DEG C, soak time be 1.0 ~
2.0h。
The inventive method is further arranged to, above-mentioned steps（2）In above-mentioned sludge be paper mill sludge or municipal sewage
Treatment plant's sludge.
The inventive method is further arranged to, above-mentioned steps（3）In, during pyrolysis, the rate of heat addition is 10 ~ 20 DEG C/min, heat
It is 500 ~ 600 DEG C to solve temperature, and pyrolysis time is 1.0 ~ 2.0h.
The inventive method is further arranged to, above-mentioned steps（4）In, cleaning concentration of hydrochloric acid 3mol/L used, distillation used
Coolant-temperature gage is 70 DEG C, then with ultrasonic cleaner Power Control in 50 ~ 60W.
The inventive method is further arranged to, above-mentioned steps（5）In, add FeSO4Solution is 0.1 ~ 1mol/L, dipping
Time is 1 ~ 2h, and mixing time is 24 ~ 30h；
The inventive method is further arranged to, step（6）In, during calcining, the rate of heat addition is 10 ~ 20 DEG C/min, and pyrolysis temperature is
500 ~ 600 DEG C, pyrolysis time is 2.0 ~ 3.0h.
The second object of the present invention is to provide a kind of sludge carbon base class prepared according to above-mentioned preparation method
Fenton catalyst, the specific surface area of above-mentioned sludge carbon base type Fenton catalyst is 350 ~ 450m2/ g, average pore size be 2 ~
5nm。
The third object of the present invention is to provide a sludge carbon base type Fenton catalyst in terms of dye wastewater treatment
Using.
The invention has the advantages that：
The present invention uses sludged waste material for raw material, and the sludge carbon base of high added value is prepared by activation-pyrolysis-load-calcining
Type Fenton catalyst.Specifically, with ZnCl2/ Ca (OH) is composite activating agent, and by high temperature pyrolysis, sludge is converted into porous
Active sludge carbon, using ferrous sulfate as source of iron, is allowed to firmly be supported on porous sludge carbon, so as to form sludge by calcining
Charcoal base type Fenton catalyst.It is allowed to produce hydroxyl radical free radical using the iron ion catalyzing hydrogen peroxide loaded on sludge carbon,
The organic pollution of further effectively degraded difficult degradation.
The present invention utilizes sludged waste material, and sludge carbon base class Fenton has been made and has urged by activation-pyrolysis-load-calcining
Agent, with good catalytic action, in difficult degradation pollutions such as degraded azo dyes, the field of environment pollution control such as language has
Good application prospect.
The present invention not only solves the problem of environmental pollution of sludge, moreover it is possible to prepare the environmental functional material of high added value
Material, can test the treatment of wastes with processes of wastes against one another, resource circulation utilization.
Catalyst produced by the present invention has high specific surface area, and avtive spot is more, therefore activity is high.Utilize present invention catalysis
Agent can effectively go azo dyes rhodamine B in water removal.
Embodiment
The present invention is further illustrated below in conjunction with specific implementation method, but embodiment does not do any form to the present invention
Restriction.Unless stated otherwise, the reagent that uses of the present invention, method and apparatus be the art conventional reagent, method and
Equipment.
Unless stated otherwise, agents useful for same and material of the present invention are purchased in market.
1. raw material
Sludge, zinc chloride, calcium hydroxide, hydrochloric acid, ferrous sulfate.
2. processing step
（1）Sludge is dried for 105 DEG C, 80 mesh sieves are crossed after attrition grinding；
（2）Activation：Weigh 6g sludge sludge and add ZnCl2/Ca(OH)2Composite activating agent, dewatered sludge and ZnCl2（5mol/
L）Solid-liquid mass ratio is 1:1 (g/mL), Ca (OH)2For 4 wt. % dewatered sludge quality；Activator is set to be contacted with excess sludge mixed
Close, be put into 20 DEG C, 1.0h in thermostatic control oscillator vibration；It is put into 5 hours in 105 DEG C of baking ovens and dries.
（3）Pyrolysis：Material after above-mentioned activation is contained in into boat-shaped crucible to be placed in high temperature tubular resistor furnace, the rate of heat addition is controlled
For 20 DEG C/min, pyrolysis temperature is 550 DEG C, and pyrolysis time is logical N2 protections in 1.0h, experimentation, controls N2Flow is
0.1m3/h；
（4）Post processing：After cooling, product is cleaned with 3mol/L HCl, then is rinsed with 70 DEG C of distilled water to pH=6-7, and
(50W, 10min) is cleaned with ultrasonic cleaner afterwards, places in drying baker and is dried at 80 DEG C, grinding is crossed 200 mesh sieves, obtained
Active sludge carbon powder sample, as catalyst carrier.
（5）Load：10g sludge activity carbon powders are weighed, 30mL 0.1mol/L FeSO are added4Solution, impregnates 1h, stirring
24h, 105 DEG C of drying 24h.
（6）Calcining：Above-mentioned loaded product is contained in into boat-shaped crucible to be placed in high temperature tubular resistor furnace, controls the rate of heat addition to be
20 DEG C/min, pyrolysis temperature is 550 DEG C, and pyrolysis time is logical N2 protections in 2h, experimentation, controls N2Flow is 0.1m3/h。
（7）Cleaning：Loaded product to electrical conductivity is cleaned with deionized water and keeps constant, 80 DEG C of dryings to sludge carbon base
Type Fenton catalyst.
It the above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to embodiment, all category
Protection scope of the present invention is belonged in the technical scheme under thinking of the present invention.It should be pointed out that for the common of the art
For technical staff, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of preparation method of sludge carbon base type Fenton catalyst, it is characterised in that it is using sludge as raw material, with compound work
Agent activated sludge, is pyrolyzed the gas produced in 500 ~ 600 DEG C as pore creating material using activator, active sludge carbon is prepared, with made
Standby active sludge carbon is carrier, using ferrous sulfate as catalyst source of iron, and pyrogenically prepared sludge carbon base class is carried out in 350 ~ 550 DEG C
Fenton catalyst.
2. preparation method according to claim 1, it is characterised in that its preparation process includes：
（1）Pretreatment：Sludge is dried for 105 DEG C, 80 mesh sieves are crossed after attrition grinding；
（2）Activation：Weigh 6g sludge and add composite activating agent, activator is contacted mixing with excess sludge, be put into thermostatted water
Bathe and activation is shaken in oscillator；5h in 105 DEG C of baking ovens is put into dry；
（3）Pyrolysis：Material after above-mentioned activation is contained in into boat-shaped crucible to be placed in high temperature tubular resistor furnace, it is 10 to control the rate of heat addition
~ 20 DEG C/min, pyrolysis temperature is 500 ~ 600 DEG C, and pyrolysis time is logical N in 1.0 ~ 2.0h, experimentation2Protection；
（4）Post processing：After cooling, product is cleaned with hydrochloric acid, then is rinsed with 70 DEG C of distilled water to pH=6-7, then with super
Sound wave washer is cleaned, and is placed in drying baker and is dried at 80 DEG C, and grinding crosses 200 mesh sieves, obtains active sludge carbon powder-like
Product, as catalyst carrier；
（5）Load：10g sludge activity carbon powders are weighed, 30mL FeSO are added4Solution, impregnates, stirring, 105 DEG C of drying；
（6）Calcining：Above-mentioned loaded product is contained in into boat-shaped crucible to be placed in high temperature tubular resistor furnace, control the rate of heat addition for 10 ~
20 DEG C/min, pyrolysis temperature is 350 ~ 550 DEG C, and pyrolysis time is logical N in 2.0 ~ 3.0h, experimentation2Protection；
（7）Cleaning：Loaded product to electrical conductivity is cleaned with deionized water and keeps constant, 80 DEG C of dryings to sludge carbon base class
Fenton catalyst.
3. preparation method according to claim 2, it is characterised in that the step（2）Middle composite activating agent is ZnCl2/Ca
(OH)2, wherein, dewatered sludge and ZnCl2（5mol/ L）Solid-liquid mass ratio is 1:1 ~ 2 (g/mL), Ca (OH)2It is dry for 4 ~ 8wt. %
Sludge quality.
4. preparation method according to claim 2, it is characterised in that the step（2）In, activation temperature is 20 ~ 25 DEG C,
Soak time is 1.0 ~ 2.0h.
5. preparation method according to claim 2, it is characterised in that the step（2）Described in sludge be that paper mill is dirty
Mud or sludge from wastewater treatment plant.
6. preparation method according to claim 2, it is characterised in that the step（3）In, during pyrolysis, the rate of heat addition is
10 ~ 20 DEG C/min, pyrolysis temperature is 500 ~ 600 DEG C, and pyrolysis time is 1.0 ~ 2.0h.
7. preparation method according to claim 2, it is characterised in that the step（4）In, cleaning concentration of hydrochloric acid used
3mol/L, distillation coolant-temperature gage used is 70 DEG C, then with ultrasonic cleaner Power Control in 50 ~ 60W.
8. preparation method according to claim 2, it is characterised in that
The step（5）In, add FeSO4Solution is 0.1 ~ 1mol/L, and dip time is 1 ~ 2h, and mixing time is 24 ~ 30h；
Step（6）In, during calcining, the rate of heat addition be 10 ~ 20 DEG C/min, pyrolysis temperature be 500 ~ 600 DEG C, pyrolysis time be 2.0 ~
3.0h。
9. the sludge carbon base type Fenton catalyst prepared according to any preparation method of claim 1 ~ 8, its feature
It is that the specific surface area of the sludge carbon base type Fenton catalyst is 350 ~ 450m2/ g, average pore size is 2 ~ 5nm.
10. application of the sludge carbon base type Fenton catalyst in terms of dye wastewater treatment according to claim 9.
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| CN107175078A (en) * | 2017-07-21 | 2017-09-19 | 西昌学院 | A kind of sludge buckwheat base magnetic active carbon and preparation method thereof |
| CN107321350A (en) * | 2017-08-09 | 2017-11-07 | 浙江省农业科学院 | Sludge base Co/Fe bimetallics are combined type Fenton catalyst and its preparation method and application |
| CN107335435A (en) * | 2017-08-01 | 2017-11-10 | 中国科学技术大学 | A kind of electric fenton catalyst, negative electrode and sewage water treatment method |
| CN107774261A (en) * | 2017-11-01 | 2018-03-09 | 枣庄学院 | A kind of preparation method of heterogeneous type Fenton catalyst Co/C composites |
| CN108325530A (en) * | 2018-01-30 | 2018-07-27 | 福建师范大学 | A kind of efficient type Fenton catalyst of magnesium-based and preparation method thereof |
| CN108479741A (en) * | 2018-04-08 | 2018-09-04 | 南京工业大学 | Method for preparing heterogeneous photo-Fenton catalyst from sludge, catalyst and application |
| CN108579734A (en) * | 2018-04-08 | 2018-09-28 | 南京工业大学 | Sludge carbon electrochemical catalyst and preparation and application thereof |
| CN110116000A (en) * | 2019-04-04 | 2019-08-13 | 杭州师范大学 | A kind of sludge carbon-supported catalysts and its preparation method and application |
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| CN110433872A (en) * | 2018-05-02 | 2019-11-12 | 南京工业大学 | Metal-containing sludge carbon-based catalytic material for catalyzing hydrogen peroxide to sterilize efficiently |
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| CN114394727A (en) * | 2022-03-15 | 2022-04-26 | 济南市环境研究院(济南市黄河流域生态保护促进中心) | Preparation method and application of treating agent based on municipal sludge biochar |
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