CN116119780B - Suspension micro-electrolysis filler and preparation method thereof - Google Patents
Suspension micro-electrolysis filler and preparation method thereof Download PDFInfo
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- CN116119780B CN116119780B CN202310329041.4A CN202310329041A CN116119780B CN 116119780 B CN116119780 B CN 116119780B CN 202310329041 A CN202310329041 A CN 202310329041A CN 116119780 B CN116119780 B CN 116119780B
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- 239000000945 filler Substances 0.000 title claims abstract description 90
- 239000000725 suspension Substances 0.000 title claims abstract description 69
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 43
- 230000001681 protective effect Effects 0.000 claims abstract description 77
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 69
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims description 72
- 239000011230 binding agent Substances 0.000 claims description 58
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 46
- 239000002994 raw material Substances 0.000 claims description 46
- 238000012856 packing Methods 0.000 claims description 41
- 238000002156 mixing Methods 0.000 claims description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 32
- 238000003825 pressing Methods 0.000 claims description 32
- 239000003054 catalyst Substances 0.000 claims description 26
- 239000002270 dispersing agent Substances 0.000 claims description 26
- 239000000835 fiber Substances 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 20
- 239000006260 foam Substances 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 18
- 238000010000 carbonizing Methods 0.000 claims description 16
- 150000007522 mineralic acids Chemical class 0.000 claims description 16
- 239000011265 semifinished product Substances 0.000 claims description 16
- 238000007493 shaping process Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 238000000748 compression moulding Methods 0.000 claims description 15
- 239000005539 carbonized material Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 230000000670 limiting effect Effects 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002411 adverse Effects 0.000 abstract description 5
- 230000005465 channeling Effects 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 3
- 230000008021 deposition Effects 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000004043 dyeing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- -1 anthraquinone compounds Chemical class 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46176—Galvanic cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Catalysts (AREA)
Abstract
The application discloses a suspension micro-electrolysis filler and a preparation method thereof, wherein suspension balls are filled and installed in a filler layer, guide holes are uniformly formed in the outer side wall of the filler layer, a protective net corresponding to the guide holes is sleeved and installed on the outer side wall of the suspension balls, an active carbon layer arranged in the protective net is filled between the suspension balls and the filler layer, the suspension balls can greatly improve the integral suspension degree of micro-electrolysis filler, so that the filler can be easily suspended or rolled when a water body is aerated or stirred, the adverse effects of blockage, channeling, surface scaling and the like in the micro-electrolysis reaction process caused by the deposition of the filler at the lower end of a reactor are effectively avoided, the guide holes are convenient for realizing the flow of the water body, the micro-electrolysis efficiency is enhanced, the contact area between the filler layer and the waste water is increased, the waste water is convenient to flow into the protective net, the waste water is purified and absorbed through the contact between the waste water and the active carbon layer, and the purification efficiency is high.
Description
Technical Field
The application relates to the technical field of suspension micro-electrolysis filler, in particular to a suspension micro-electrolysis filler and a preparation method thereof.
Background
The micro-electrolysis technology is widely applied to the field of sewage treatment, can be used in the fields of dye production, fine chemical industry, pharmacy, pesticide, metal surface treatment, electroplating, circuit board and other high-concentration degradation-resistant organic industrial wastewater treatment, and the wastewater contains more nitrobenzene, chlorobenzene, heterocycle, naphthalene and anthraquinone compounds, and is particularly difficult to decompose, crack or oxidize.
The composite micro-electrolysis filler with application number of 201510634458.7 improves the efficiency of iron-carbon micro-electrolysis to a certain extent and can solve the problems of easy hardening and easy passivation of the traditional micro-electrolysis filler, but the prepared composite micro-electrolysis filler has the problems of low mechanical strength, easy abrasion, difficult fluidization and the like, andthe composition of the micro-electrolysis filler is iron and carbon, the density of the iron is very high, and the micro-electrolysis filler formed after combination is much larger than water density and is generally 2.0g/mm 3 After the micro-electrolysis filler is filled, the micro-electrolysis filler is basically fixed and stabilized at the lower end of the reactor, so that adverse effects such as blockage, channeling, surface scaling and the like often occur in the micro-electrolysis reaction process, the efficiency of the micro-electrolysis filler is reduced, and the micro-electrolysis filler is seriously disabled.
However, the following technical drawbacks exist due to the operation of conventional microelectrolysis reactor/tower processes in practical engineering applications:
1. the efficiency is low, and the reaction speed is low;
2. the bed body is easy to harden or block and passivate, short circuit and dead zone are caused, and the efficiency is reduced;
3. the iron filings supplement the defects of high labor intensity and the like, and limits the application of the technology.
For this purpose we propose a suspension micro-electrolysis filler and a method for its preparation.
Disclosure of Invention
The application aims to provide a suspension micro-electrolysis filler and a preparation method thereof, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present application provides the following technical solutions:
the preparation method of the suspension micro-electrolysis filler is based on a structure in the suspension micro-electrolysis filler, and the preparation raw materials of the preparation method are as follows in parts by weight: 30-40 parts of iron powder, 20-30 parts of activated carbon powder, 15-30 parts of aluminum powder, 4-10 parts of organic fiber yarns, 10-20 parts of dispersing agent, 5-10 parts of binder, 2-5 parts of catalyst, 10-20 parts of inorganic acid, filter screen base material and foam base material;
the suspension micro-electrolysis filler comprises a filler layer, wherein a suspension ball is filled and installed in the filler layer, diversion holes are uniformly formed in the outer side wall of the filler layer, a protection net corresponding to the diversion holes is sleeved and installed on the outer side wall of the suspension ball, and an active carbon layer arranged in the protection net is filled between the suspension ball and the filler layer;
the device comprises a filler layer, a protective net, a suspension ball, a protective net, an active carbon layer, a limiting convex rib, a guide hole and a guide hole, wherein the filler layer is spherical, a spherical cavity is formed in the filler layer, the size of the cavity is the same as that of the protective net, the suspension ball is a foam ball, the protective net is adhesively assembled on the outer side wall of the suspension ball, the protective net is uniformly provided with a containing through groove, the containing through groove is communicated with the suspension ball and the inner cavity of the filler layer, the active carbon layer and the containing through groove are the same in size, the outer side wall of the protective net is integrally provided with the limiting convex rib, the limiting convex rib is assembled in the guide hole in a clamping manner, the guide hole is communicated with the inner cavity of the filler layer, and the guide hole is tapered from outside to inside;
the preparation method comprises the following specific steps:
s1: preparing a suspension ball: mixing the foam base material and the binder, and then introducing the mixture into a die for compression molding to prepare a suspension ball;
s2: preparing a protective net: mixing the filter screen base material and the binder, then introducing the mixture into a prefabricated mold for pressurizing and forming, introducing bubbles at the same time, and cooling and forming to obtain a protective net;
s3: mixing active carbon powder and a binder, introducing the mixture of the active carbon powder and the binder into a containing through groove on the protective net, pressing and shaping the outside of the protective net through a clamp, and cooling for later use;
s4: screening and weighing: corresponding parts by weight of iron powder, activated carbon powder, aluminum powder, organic fiber wires, dispersing agents, binders and catalyst raw materials are weighed for standby after impurities are removed;
s5: mixing and stirring: the weighed iron powder, activated carbon powder, aluminum powder, organic fiber yarns, dispersing agent, binder and catalyst raw materials are added into a mixer, and water is added into the mixer for stirring for 1-2 hours for standby;
s6: carbonizing and reaming: putting the mixed raw materials into a roller press, pressing and extruding the raw materials into particles with the particle size of 1-2mm, pre-oxidizing the particles for 1-2 hours at the temperature of 200-300 ℃, carbonizing the particles for 1-2 hours at the temperature of 1000-1300 ℃ under the protection of inert gas, crushing the carbonized materials into 50-mesh particles, and then introducing the particles into inorganic acid for reaming;
s7: firstly adding a shaped protective net into a prefabricated mould, then guiding the reamed particles into the prefabricated mould, uniformly paving the particles on the outer side wall of the protective net, and then cold-pressing the particles into a semi-finished product packing layer in the prefabricated mould, wherein guide holes are naturally formed in the cold-pressing process;
s8: placing the semi-finished product packing layer in a baking oven, controlling the baking temperature at 80-120 ℃, baking for 5-10 hours, and shaping, so that the micro-electrolysis packing is obtained after the packing layer, the suspension balls, the protective net and the active carbon layer are baked and cooled.
Compared with the prior art, the application has the beneficial effects that:
1. the application has reasonable structural design, a certain proportion of dispersing agent is added in the preparation raw materials of the filler layer, the specific surface area is large, so that a large number of micropore structures can be formed in the filler, the number of primary batteries formed by the filler with the same volume is large, the generated microcurrent is large, the contact area with waste water is large, the treatment efficiency is high, aluminum powder, organic fiber wires and binder are added in the preparation raw materials, so that various raw materials are mutually adhered to form a fixed shape in the mixing, extruding and sintering processes, the prepared filler layer has stronger mechanical strength, the problems of crushing and blocking pipelines of the filler in the using process are avoided, and when iron and carbon are micro-electrolyzed, the aluminum and the catalyst can realize the catalysis effect, reduce the resistance value between the iron and the carbon, increase the potential difference, facilitate the oxidation reaction, the reaction speed is higher, and the aluminum is used for replacing part of iron to form aluminum oxide compounds through oxidization carbonization, so that the activity is stable and the purposes of light weight and high mechanical strength are achieved.
2. The suspension ball can greatly improve the whole suspension degree of the micro-electrolysis filler, so that the filler can be easily suspended or rolled when the water body is aerated or stirred, the adverse consequences of blockage, channeling, surface scaling and the like in the micro-electrolysis reaction process caused by the deposition of the filler at the lower end of the reactor are effectively avoided, the filler layer is provided with the diversion holes, the water body is conveniently realized to flow, the iron/aluminum and the carbon are fully contacted, the conductivity is improved, the micro-electrolysis efficiency is enhanced, the contact area of the filler layer and the wastewater is improved, the wastewater is conveniently flowed into the protective net, and the wastewater is purified and absorbed through the contact of the wastewater and the active carbon layer, so that the purification efficiency is high.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present application.
In the figure: 1. a filler layer; 2. a suspending ball; 3. a deflector aperture; 4. a protective net; 5. an activated carbon layer.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, the present application provides a technical solution: the utility model provides a suspension microelectrolysis filler, includes packing layer 1, and packing layer 1 intussuseption is filled with suspension ball 2, evenly has offered water conservancy diversion hole 3 on the lateral wall of packing layer 1, and suspension ball 2 lateral wall cover is established and is installed protection network 4 that corresponds with water conservancy diversion hole 3, and the packing is filled with active carbon layer 5 that sets up in protection network 4 between suspension ball 2 and the packing layer 1.
The packing layer 1 is spherical, a spherical cavity is formed in the packing layer 1, and the size of the cavity is the same as that of the protective net 4.
The suspending ball 2 is a foam ball.
The protection network 4 is bonded and assembled on the outer side wall of the suspension ball 2, and the protection network 4 is uniformly provided with an accommodating through groove which is communicated with the inner cavities of the suspension ball 2 and the packing layer 1, and the size of the active carbon layer 5 is the same as that of the accommodating through groove.
The outer side wall of the protective net 4 is provided with a limiting convex edge in an integrated mode, and the limiting convex edge is assembled in the diversion hole 3 in a clamping mode.
The diversion holes 3 are communicated with the inner cavity of the packing layer 1, and the diversion holes 3 are tapered in a manner of decreasing from outside to inside.
The preparation method of the suspension micro-electrolysis filler is based on the structure in the suspension micro-electrolysis filler, and the preparation raw materials of the preparation method are as follows in parts by weight: 30-40 parts of iron powder, 20-30 parts of activated carbon powder, 15-30 parts of aluminum powder, 4-10 parts of organic fiber yarns, 10-20 parts of dispersing agent, 5-10 parts of binder, 2-5 parts of catalyst, 10-20 parts of inorganic acid, filter screen base material and foam base material;
the preparation method comprises the following specific steps:
s1: preparing a suspending ball 2: mixing the foam base material and the binder, and then introducing the mixture into a die for compression molding to prepare a suspension ball 2;
s2: preparing a protective net 4: mixing the filter screen base material and the binder, then introducing the mixture into a prefabricated mold for compression molding, introducing bubbles at the same time, and cooling and molding to obtain a protective net 4;
s3: mixing active carbon powder and a binder, introducing the mixture of the active carbon powder and the binder into a containing through groove on the protective net 4, pressing and shaping the outside of the protective net 4 through a clamp, and cooling for later use;
s4: screening and weighing: corresponding parts by weight of iron powder, activated carbon powder, aluminum powder, organic fiber wires, dispersing agents, binders and catalyst raw materials are weighed for standby after impurities are removed;
s5: mixing and stirring: the weighed iron powder, activated carbon powder, aluminum powder, organic fiber yarns, dispersing agent, binder and catalyst raw materials are added into a mixer, and water is added into the mixer for stirring for 1-2 hours for standby;
s6: carbonizing and reaming: putting the mixed raw materials into a roller press, pressing and extruding the raw materials into particles with the particle size of 1-2mm, pre-oxidizing the particles for 1-2 hours at the temperature of 200-300 ℃, carbonizing the particles for 1-2 hours at the temperature of 1000-1300 ℃ under the protection of inert gas, crushing the carbonized materials into 50-mesh particles, and then introducing the particles into inorganic acid for reaming;
s7: firstly adding a shaped protective net 4 into a prefabricated mould, then guiding the reamed particles into the prefabricated mould, uniformly paving the particles on the outer side wall of the protective net 4, cold-pressing the particles into a semi-finished product packing layer 1 in the prefabricated mould, and naturally forming a diversion hole 3 in the cold-pressing process;
s8: placing the semi-finished product of the packing layer 1 in an oven, controlling the drying temperature to be 80-120 ℃, drying for 5-10 hours and shaping, and drying and cooling the packing layer 1, the suspension balls 2, the protective net 4 and the active carbon layer 5 to obtain the micro-electrolysis packing.
Example 1
The preparation method of the suspension micro-electrolysis filler is based on the structure in the suspension micro-electrolysis filler, and the preparation raw materials of the preparation method are as follows in parts by weight: 30 parts of iron powder, 20 parts of activated carbon powder, 15 parts of aluminum powder, 4 parts of organic fiber yarns, 10 parts of dispersing agent, 5 parts of binder, 2 parts of catalyst, 10 parts of inorganic acid, a filter screen base material and a foam base material;
the preparation method comprises the following specific steps:
s1: preparing a suspending ball 2: mixing the foam base material and the binder, and then introducing the mixture into a die for compression molding to prepare a suspension ball 2;
s2: preparing a protective net 4: mixing the filter screen base material and the binder, then introducing the mixture into a prefabricated mold for compression molding, introducing bubbles at the same time, and cooling and molding to obtain a protective net 4;
s3: mixing active carbon powder and a binder, introducing the mixture of the active carbon powder and the binder into a containing through groove on the protective net 4, pressing and shaping the outside of the protective net 4 through a clamp, and cooling for later use;
s4: screening and weighing: corresponding parts by weight of iron powder, activated carbon powder, aluminum powder, organic fiber wires, dispersing agents, binders and catalyst raw materials are weighed for standby after impurities are removed;
s5: mixing and stirring: the weighed iron powder, activated carbon powder, aluminum powder, organic fiber yarns, dispersing agent, binder and catalyst raw materials are added into a mixer, and water is added into the mixer for stirring for 2 hours for standby;
s6: carbonizing and reaming: putting the mixed raw materials into a roller press, pressing and extruding the raw materials into particles with the particle size of 1-2mm, pre-oxidizing the particles for 2 hours at the temperature of 200 ℃, carbonizing the particles for 2 hours at the temperature of 1200 ℃ under the protection of inert gas, crushing the carbonized materials into 50-mesh particles, and introducing the particles into inorganic acid for reaming;
s7: firstly adding a shaped protective net 4 into a prefabricated mould, then guiding the reamed particles into the prefabricated mould, uniformly paving the particles on the outer side wall of the protective net 4, cold-pressing the particles into a semi-finished product packing layer 1 in the prefabricated mould, and naturally forming a diversion hole 3 in the cold-pressing process;
s8: and (3) placing the semi-finished product of the packing layer 1 in an oven, controlling the drying temperature to be 100 ℃, drying for 10 hours and shaping, so that the micro-electrolysis packing A is obtained after the packing layer 1, the suspension balls 2, the protective net 4 and the active carbon layer 5 are dried and cooled.
Example 2
The preparation method of the suspension micro-electrolysis filler is based on the structure in the suspension micro-electrolysis filler, and the preparation raw materials of the preparation method are as follows in parts by weight: 30 parts of iron powder, 30 parts of activated carbon powder, 20 parts of aluminum powder, 5 parts of organic fiber yarns, 10 parts of dispersing agent, 5 parts of binder, 3 parts of catalyst, 10 parts of inorganic acid, a filter screen base material and a foam base material;
the preparation method comprises the following specific steps:
s1: preparing a suspending ball 2: mixing the foam base material and the binder, and then introducing the mixture into a die for compression molding to prepare a suspension ball 2;
s2: preparing a protective net 4: mixing the filter screen base material and the binder, then introducing the mixture into a prefabricated mold for compression molding, introducing bubbles at the same time, and cooling and molding to obtain a protective net 4;
s3: mixing active carbon powder and a binder, introducing the mixture of the active carbon powder and the binder into a containing through groove on the protective net 4, pressing and shaping the outside of the protective net 4 through a clamp, and cooling for later use;
s4: screening and weighing: corresponding parts by weight of iron powder, activated carbon powder, aluminum powder, organic fiber wires, dispersing agents, binders and catalyst raw materials are weighed for standby after impurities are removed;
s5: mixing and stirring: the weighed iron powder, activated carbon powder, aluminum powder, organic fiber yarns, dispersing agent, binder and catalyst raw materials are added into a mixer, and water is added into the mixer for stirring for 2 hours for standby;
s6: carbonizing and reaming: putting the mixed raw materials into a roller press, pressing and extruding the raw materials into particles with the particle size of 1-2mm, pre-oxidizing the particles for 2 hours at the temperature of 200 ℃, carbonizing the particles for 2 hours at the temperature of 1200 ℃ under the protection of inert gas, crushing the carbonized materials into 50-mesh particles, and introducing the particles into inorganic acid for reaming;
s7: firstly adding a shaped protective net 4 into a prefabricated mould, then guiding the reamed particles into the prefabricated mould, uniformly paving the particles on the outer side wall of the protective net 4, cold-pressing the particles into a semi-finished product packing layer 1 in the prefabricated mould, and naturally forming a diversion hole 3 in the cold-pressing process;
s8: and (3) placing the semi-finished product of the packing layer 1 in an oven, controlling the drying temperature to be 100 ℃, drying for 10 hours and shaping, so that the micro-electrolysis packing B is obtained after the packing layer 1, the suspension balls 2, the protective net 4 and the active carbon layer 5 are dried and cooled.
Example 3
The preparation method of the suspension micro-electrolysis filler is based on the structure in the suspension micro-electrolysis filler, and the preparation raw materials of the preparation method are as follows in parts by weight: 35 parts of iron powder, 30 parts of activated carbon powder, 30 parts of aluminum powder, 8 parts of organic fiber yarns, 15 parts of dispersing agent, 8 parts of binder, 4 parts of catalyst, 14 parts of inorganic acid, a filter screen base material and a foam base material;
the preparation method comprises the following specific steps:
s1: preparing a suspending ball 2: mixing the foam base material and the binder, and then introducing the mixture into a die for compression molding to prepare a suspension ball 2;
s2: preparing a protective net 4: mixing the filter screen base material and the binder, then introducing the mixture into a prefabricated mold for compression molding, introducing bubbles at the same time, and cooling and molding to obtain a protective net 4;
s3: mixing active carbon powder and a binder, introducing the mixture of the active carbon powder and the binder into a containing through groove on the protective net 4, pressing and shaping the outside of the protective net 4 through a clamp, and cooling for later use;
s4: screening and weighing: corresponding parts by weight of iron powder, activated carbon powder, aluminum powder, organic fiber wires, dispersing agents, binders and catalyst raw materials are weighed for standby after impurities are removed;
s5: mixing and stirring: the weighed iron powder, activated carbon powder, aluminum powder, organic fiber yarns, dispersing agent, binder and catalyst raw materials are added into a mixer, and water is added into the mixer for stirring for 2 hours for standby;
s6: carbonizing and reaming: putting the mixed raw materials into a roller press, pressing and extruding the raw materials into particles with the particle size of 1-2mm, pre-oxidizing the particles for 2 hours at the temperature of 200 ℃, carbonizing the particles for 2 hours at the temperature of 1200 ℃ under the protection of inert gas, crushing the carbonized materials into 50-mesh particles, and introducing the particles into inorganic acid for reaming;
s7: firstly adding a shaped protective net 4 into a prefabricated mould, then guiding the reamed particles into the prefabricated mould, uniformly paving the particles on the outer side wall of the protective net 4, cold-pressing the particles into a semi-finished product packing layer 1 in the prefabricated mould, and naturally forming a diversion hole 3 in the cold-pressing process;
s8: and placing the semi-finished product packing layer 1 in an oven, controlling the drying temperature to be 100 ℃, drying for 10 hours and shaping, and drying and cooling the packing layer 1, the suspension balls 2, the protective net 4 and the active carbon layer 5 to obtain the micro-electrolysis packing C.
Example 4
The preparation method of the suspension micro-electrolysis filler is based on the structure in the suspension micro-electrolysis filler, and the preparation raw materials of the preparation method are as follows in parts by weight: 35 parts of iron powder, 30 parts of activated carbon powder, 30 parts of aluminum powder, 8 parts of organic fiber yarns, 15 parts of dispersing agent, 10 parts of binder, 5 parts of catalyst, 20 parts of inorganic acid, a filter screen base material and a foam base material;
the preparation method comprises the following specific steps:
s1: preparing a suspending ball 2: mixing the foam base material and the binder, and then introducing the mixture into a die for compression molding to prepare a suspension ball 2;
s2: preparing a protective net 4: mixing the filter screen base material and the binder, then introducing the mixture into a prefabricated mold for compression molding, introducing bubbles at the same time, and cooling and molding to obtain a protective net 4;
s3: mixing active carbon powder and a binder, introducing the mixture of the active carbon powder and the binder into a containing through groove on the protective net 4, pressing and shaping the outside of the protective net 4 through a clamp, and cooling for later use;
s4: screening and weighing: corresponding parts by weight of iron powder, activated carbon powder, aluminum powder, organic fiber wires, dispersing agents, binders and catalyst raw materials are weighed for standby after impurities are removed;
s5: mixing and stirring: the weighed iron powder, activated carbon powder, aluminum powder, organic fiber yarns, dispersing agent, binder and catalyst raw materials are added into a mixer, and water is added into the mixer for stirring for 2 hours for standby;
s6: carbonizing and reaming: putting the mixed raw materials into a roller press, pressing and extruding the raw materials into particles with the particle size of 1-2mm, pre-oxidizing the particles for 2 hours at the temperature of 200 ℃, carbonizing the particles for 2 hours at the temperature of 1200 ℃ under the protection of inert gas, crushing the carbonized materials into 50-mesh particles, and introducing the particles into inorganic acid for reaming;
s7: firstly adding a shaped protective net 4 into a prefabricated mould, then guiding the reamed particles into the prefabricated mould, uniformly paving the particles on the outer side wall of the protective net 4, cold-pressing the particles into a semi-finished product packing layer 1 in the prefabricated mould, and naturally forming a diversion hole 3 in the cold-pressing process;
s8: and placing the semi-finished product packing layer 1 in an oven, controlling the drying temperature to be 100 ℃, drying for 10 hours and shaping, and drying and cooling the packing layer 1, the suspension balls 2, the protective net 4 and the active carbon layer 5 to obtain the micro-electrolysis packing D.
Example 5
The preparation method of the suspension micro-electrolysis filler is based on the structure in the suspension micro-electrolysis filler, and the preparation raw materials of the preparation method are as follows in parts by weight: 35 parts of iron powder, 30 parts of activated carbon powder, 15 parts of aluminum powder, 6 parts of organic fiber yarns, 15 parts of dispersing agent, 10 parts of binder, 3 parts of catalyst, 15 parts of inorganic acid, a filter screen base material and a foam base material;
the preparation method comprises the following specific steps:
s1: preparing a suspending ball 2: mixing the foam base material and the binder, and then introducing the mixture into a die for compression molding to prepare a suspension ball 2;
s2: preparing a protective net 4: mixing the filter screen base material and the binder, then introducing the mixture into a prefabricated mold for compression molding, introducing bubbles at the same time, and cooling and molding to obtain a protective net 4;
s3: mixing active carbon powder and a binder, introducing the mixture of the active carbon powder and the binder into a containing through groove on the protective net 4, pressing and shaping the outside of the protective net 4 through a clamp, and cooling for later use;
s4: screening and weighing: corresponding parts by weight of iron powder, activated carbon powder, aluminum powder, organic fiber wires, dispersing agents, binders and catalyst raw materials are weighed for standby after impurities are removed;
s5: mixing and stirring: the weighed iron powder, activated carbon powder, aluminum powder, organic fiber yarns, dispersing agent, binder and catalyst raw materials are added into a mixer, and water is added into the mixer for stirring for 2 hours for standby;
s6: carbonizing and reaming: putting the mixed raw materials into a roller press, pressing and extruding the raw materials into particles with the particle size of 1-2mm, pre-oxidizing the particles for 2 hours at the temperature of 200 ℃, carbonizing the particles for 2 hours at the temperature of 1200 ℃ under the protection of inert gas, crushing the carbonized materials into 50-mesh particles, and introducing the particles into inorganic acid for reaming;
s7: firstly adding a shaped protective net 4 into a prefabricated mould, then guiding the reamed particles into the prefabricated mould, uniformly paving the particles on the outer side wall of the protective net 4, cold-pressing the particles into a semi-finished product packing layer 1 in the prefabricated mould, and naturally forming a diversion hole 3 in the cold-pressing process;
s8: and placing the semi-finished product packing layer 1 in an oven, controlling the drying temperature to be 100 ℃, drying for 10 hours and shaping, and drying and cooling the packing layer 1, the suspension balls 2, the protective net 4 and the active carbon layer 5 to obtain the micro-electrolysis packing E.
The micro-electrolysis filler prepared by the application is practically produced and applied
The comparative test of the electrolytic treatment effect of the micro-electrolysis filler prepared based on the commercial micro-electrolysis filler and the file of the application on the wastewater in the actual life comprises the following steps: collecting waste water of a printing and dyeing mill, wherein the waste water contains reactive dye, direct dye, disperse dye, auxiliary agent and surfactant, and the experimental method is as follows: adding an aeration head into a columnar reactor with the height of 100cm and the diameter of 10cm, respectively filling a micro-electrolysis filler A, B, C, D, E and a commercially available micro-electrolysis filler F, then injecting the printing and dyeing wastewater to 80% of the volume of the columnar reactor, then starting aeration, controlling the dissolved oxygen to be 1-2mg/L, standing and precipitating for 40 minutes after reacting for 2 hours, taking a supernatant fluid thereof, and measuring the water quality index: CODcr, BOD5, chromaticity before and after treatment, PH, potential difference, aperture ratio and hardening conditions, and experimental results are shown in the following table:
| potential difference (V) | Percentage of open hole (%) | PH | CODcr（mg/L） | BOD5（mg/L） | Degree centigrade of color | Biochemical property | Hardening condition | Removal rate (%) | |
| A | 1.38 | 56 | 4.2 | 4125 | 154 | 128 | 0.40 | Without any means for | 50 |
| B | 1.48 | 62 | 4.6 | 3890 | 140 | 120 | 0.46 | Without any means for | 54 |
| C | 1.65 | 68 | 5.8 | 3624 | 120 | 110 | 0.52 | Without any means for | 58 |
| D | 1.43 | 59 | 4.9 | 4020 | 138 | 121 | 0.48 | Without any means for | 45 |
| E | 1.26 | 53 | 4.5 | 4128 | 145 | 130 | 0.43 | Without any means for | 42 |
| F | 1.05 | 34 | 3 | 9528 | 260 | 610 | 0.15 | Appear after five months Blocking and hardening | 20 |
Conclusion: based on the contents in the table, the micro-electrolysis filler prepared by the application has higher potential difference and larger aperture ratio than the commercial filler, has higher COD removal rate and higher chromaticity removal rate when being used for treating the waste water of a printing and dyeing mill, is obviously superior to the commercial filler, greatly improves the biodegradability of the waste water, can be suspended in the waste water, has large contact area with the waste water and high treatment efficiency, and can effectively avoid the adverse effects of blockage, channeling, surface scaling and the like caused by the fact that the filler is stabilized at the lower end of a reactor after being used for a long time.
The dispersing agent is added into the preparation raw material of the filler layer 1 in a certain proportion, the specific surface area is large, so that a large quantity of micropore structures can be formed in the filler, the number of primary batteries formed by the filler with the same volume is large, the generated microcurrent is large, the contact area with waste water is large, the treatment efficiency is high, aluminum powder, organic fiber yarn and binder are added into the preparation raw material, so that various raw materials are mutually adhered into fixed shapes in the mixing, extruding and sintering processes, the prepared filler layer has stronger mechanical strength, the problems of filler breakage and pipeline blockage in the using process are avoided, when iron and carbon are micro-electrolyzed, the aluminum and the catalyst can realize the catalysis effect, the resistance value between the iron and the carbon is reduced, the potential difference is increased, the oxidation reaction is convenient to realize, the reaction speed is higher, and meanwhile, part of iron is replaced by aluminum to form, the aluminum oxide compound can be formed, the activity is stable, the purposes of light weight and high mechanical strength are achieved, the whole suspension degree of the micro-electrolysis filler can be greatly improved through the arrangement of the suspension balls 2, so that when the water body is aerated or stirred, the filler can be easily suspended or rolled, the adverse consequences of blockage, channeling, surface scaling and the like in the micro-electrolysis reaction process caused by the fact that the filler is stable at the lower end of the reactor are effectively avoided, the filler layer 1 is provided with the diversion holes 3, the flow of the water body is conveniently realized, the iron/aluminum and carbon are fully contacted, the conductivity is improved, the micro-electrolysis efficiency is enhanced, the contact area of the filler layer 1 and the wastewater is improved, the wastewater is conveniently flowed into the protective net 4, and the wastewater is purified and absorbed through the contact of the wastewater and the activated carbon layer 5, and the purification efficiency is high.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A preparation method of suspended micro-electrolysis filler is characterized in that: the preparation method is based on a structure in a suspension micro-electrolysis filler, and the preparation raw materials of the preparation method are divided into the following components in parts by weight: 30-40 parts of iron powder, 20-30 parts of activated carbon powder, 15-30 parts of aluminum powder, 4-10 parts of organic fiber yarns, 10-20 parts of dispersing agent, 5-10 parts of binder, 2-5 parts of catalyst, 10-20 parts of inorganic acid, filter screen base material and foam base material;
the suspension micro-electrolysis filler comprises a filler layer (1), wherein a suspension ball (2) is filled and installed in the filler layer (1), guide holes (3) are uniformly formed in the outer side wall of the filler layer (1), a protective net (4) corresponding to the guide holes (3) is sleeved and installed on the outer side wall of the suspension ball (2), and an active carbon layer (5) arranged in the protective net (4) is filled between the suspension ball (2) and the filler layer (1);
the device comprises a filler layer (1), a protective net (4) and a guide hole (3), wherein the filler layer (1) is spherical, a spherical cavity is formed in the filler layer (1), the size of the cavity is the same as that of the protective net (4), the suspension ball (2) is a foam ball, the protective net (4) is bonded and assembled on the outer side wall of the suspension ball (2), the protective net (4) is uniformly provided with a containing through groove, the containing through groove is communicated with the inner cavities of the suspension ball (2) and the filler layer (1), the active carbon layer (5) and the containing through groove are the same in size, the outer side wall of the protective net (4) is integrally formed with a limiting protruding edge, the limiting protruding edge is clamped and assembled in the guide hole (3), the guide hole (3) is communicated with the inner cavity of the filler layer (1), and the guide hole (3) is tapered from outside to inside.
The preparation method comprises the following specific steps:
s1: preparing a suspending ball (2): mixing the foam base material and the binder, and then introducing the mixture into a die for compression molding to prepare a suspension ball (2);
s2: preparing a protective net (4): mixing the filter screen base material and the binder, then introducing the mixture into a prefabricated mold for compression molding, introducing bubbles at the same time, and cooling and molding to obtain a protective net (4);
s3: mixing active carbon powder and a binder, introducing the mixture of the active carbon powder and the binder into a containing through groove on the protective net (4), pressing and shaping the outside of the protective net (4) through a clamp, and cooling for later use;
s4: screening and weighing: corresponding parts by weight of iron powder, activated carbon powder, aluminum powder, organic fiber wires, dispersing agents, binders and catalyst raw materials are weighed for standby after impurities are removed;
s5: mixing and stirring: the weighed iron powder, activated carbon powder, aluminum powder, organic fiber yarns, dispersing agent, binder and catalyst raw materials are added into a mixer, and water is added into the mixer for stirring for 1-2 hours for standby;
s6: carbonizing and reaming: putting the mixed raw materials into a roller press, pressing and extruding the raw materials into particles with the particle size of 1-2mm, pre-oxidizing the particles for 1-2 hours at the temperature of 200-300 ℃, carbonizing the particles for 1-2 hours at the temperature of 1000-1300 ℃ under the protection of inert gas, crushing the carbonized materials into 50-mesh particles, and then introducing the particles into inorganic acid for reaming;
s7: firstly adding a shaped protective net (4) into a prefabricated mould, then guiding the reamed particles into the prefabricated mould, uniformly paving the particles on the outer side wall of the protective net (4), and then cold-pressing the particles into a semi-finished product packing layer (1) in the prefabricated mould, wherein guide holes (3) are naturally formed in the cold-pressing process;
s8: and (3) placing the semi-finished product packing layer (1) in an oven, controlling the drying temperature to be 80-120 ℃, drying for 5-10 hours, and shaping, so that the micro-electrolysis packing is obtained after the packing layer (1), the suspension balls (2), the protective net (4) and the active carbon layer (5) are dried and cooled.
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| CN103112929A (en) * | 2013-03-12 | 2013-05-22 | 蓝星环境工程有限公司 | Microelectrolysis filler and use method thereof |
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