Reaction device for promoting humification of compost by electro-catalysis Fenton-like reaction and humification method

Abstract

The invention provides an electro-catalysis Fenton-like reaction device for promoting compost humification and a humification method. The reaction device comprises a fermentation bin, an air blower, a stirring assembly and an electrochemical power supply, the stirring assembly comprises a stirring shaft and a driving motor, the driving motor is arranged outside the bin wall of the fermentation bin, the other end of the stirring shaft penetrates through the fermentation bin and extends to an inner cavity of the fermentation bin, a plurality of stirrers are arranged on the outer wall, located in the inner cavity of the fermentation bin, of the stirring shaft at intervals, and a cathode is embedded in one side of each stirrer; an air distribution pipe full of vent holes is arranged on the other side of the air distribution pipe; a Fe-based catalyst is anchored on each cathode; the stirring shaft is provided with a main air duct along the length direction, the main air duct is communicated with each air distribution pipe, and the air blower is communicated with the main air duct and is used for pumping air into the main air duct; the inner wall of the fermentation bin is provided with an anode, and the anode and the cathode are both electrically connected with the electrochemical power source, the composting humification rate can be increased, and the composting period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of compost humification, and in particular to a reaction device and a humification method for promoting compost humification by electrocatalysis-type Fenton. Background Art

[0002] Aerobic composting is a process that harmlessly treats organic waste and converts it into stable humus (HS). The humified substances produced can be used as organic fertilizers, soil conditioners, etc. It is a reliable technology for achieving the recycling of organic solid waste. There is a class of substances with a high content of lignocellulose in organic solid waste, such as straw, biogas residue, kitchen waste and garden waste. In the aerobic composting process, their high lignocellulose content acts as a physical barrier structure, limiting the degradation and transformation of organic components, resulting in a low compost humification rate and a long decomposition cycle.

[0003] The traditional Fenton method is widely used in sewage treatment and has a good effect on COD removal. Studies have shown that the method of adding Fenton reagent, i.e., H2O2 solution and Fe 2+ Ions produce HO·, which can act on agricultural waste to increase the degradation and conversion rate of lignocellulose in compost and promote the humification process of compost. 2+ The solution has strict pH requirements, which reduces the operability of practical applications. The traditional Fenton reaction of H2O2 solution and Fe 2+ When the catalyst is Fe 2+ The catalyst is easily oxidized by O2 during aerobic composting, which reduces the activity of the Fenton reaction. In addition, the HO· produced by the traditional Fenton reaction has a short lifetime and a short transmission distance (lifetime is less than 10 -4 The diffusion distance in the solution is "several nanometers to tens of nanometers". In the organic solid waste composting system with a moisture content of 55%-65%, the mass transfer resistance of HO· is greater than that in the aqueous solution, and it is difficult to act evenly on the solid waste pile, which greatly limits the effect of the Fenton reaction.

[0004] Therefore, there is an urgent need for an electrocatalytic Fenton-type reaction device and a humification method for promoting compost humification, which can increase the compost humification rate and reduce the maturity period by improving the Fenton reaction effect. Summary of the invention

[0005] The purpose of the present invention is to provide a reaction device and a humification method for promoting compost humification by an electrocatalytic Fenton method, aiming to solve the technical problems of low humification rate and long maturity period of traditional aerobic composting.

[0006] To achieve the above-mentioned object, in a first aspect, the present invention provides a reaction device for promoting compost humification by electrocatalysis Fenton, comprising a fermentation bin, a blower, a stirring assembly rotatably arranged in the fermentation bin, and an electrochemical power source;

[0007] The stirring assembly includes a stirring shaft and a driving motor connected to one end of the stirring shaft, wherein the driving motor is arranged outside the wall of the fermentation bin, and the other end of the stirring shaft passes through the fermentation bin and extends to the inner cavity of the fermentation bin. The stirring shaft is located on the outer wall of the inner cavity of the fermentation bin, and a plurality of stirrers are arranged at intervals, and a cathode for gas diffusion is embedded on one side of each stirrer, and an air distribution pipe covered with vents is arranged on the other side; and an Fe-based catalyst is anchored on each cathode;

[0008] A main air duct is provided inside the stirring shaft along its length direction, and the main air duct is connected to each of the air distribution pipes, and the blower is connected to the main air duct through a pipeline to pump air into the main air duct;

[0009] An anode is arranged on the inner side of the fermentation chamber wall, and both the anode and the cathode are electrically connected to the electrochemical power source through a wire.

[0010] As a further improvement of the above scheme, the electrocatalytic Fenton-type device for promoting compost humification also includes a gas treatment component and a vacuum pump connected to the inner cavity of the fermentation chamber. The vacuum pump is arranged between the fermentation chamber and the gas treatment component, and is used to extract the gas generated by the reaction in the fermentation chamber to the gas treatment component, and the gas is discharged after being processed by the gas treatment component.

[0011] As a further improvement of the above solution, the fermentation bin is also provided with a feed inlet for feeding the pile into the inner cavity of the fermentation bin, and a discharge hopper for discharging waste materials after fermentation.

[0012] As a further improvement of the above scheme, the electrocatalytic Fenton-type compost humification promoting device also includes a controller, and the driving motor, blower, electrochemical power supply, and vacuum pump are all electrically connected to the controller.

[0013] As a further improvement of the above solution, the material of the anode is one of Ti, Pt, Al, Si, oxide or carbon-based composite material.

[0014] As a further improvement of the above solution, the cathode material includes a base material and a doping material doped and mixed in a preset ratio;

[0015] The substrate material is one of iron-carbon material, iron-nickel, and iron-cobalt-carbon material;

[0016] The doping material is one or more of aerogel, carbon fiber, mesoporous carbon, graphene and diamond.

[0017] As a further improvement of the above scheme, the Fe-based catalyst is one or more of FeOOH, nano-Fe2O3, and nano-iron-carbon particles.

[0018] In a second aspect, the present invention further provides a reaction device and a humification method for promoting compost humification by using the electrocatalytic Fenton method provided in the first aspect, the steps of which include:

[0019] S1: Mixing organic waste as compost raw materials with auxiliary materials, adjusting the moisture content and carbon-nitrogen ratio, and obtaining a compost pile;

[0020] S2: adding the compost pile into the inner cavity of the fermentation chamber of the electrocatalytic Fenton-type reaction device for promoting compost humification;

[0021] The electrochemical power supply of the cathode and anode is turned on, and the stirring assembly and the blower are started. The blower pumps air into each air distribution pipe. The stirring shaft of the stirring assembly stirs intermittently while the cathode reacts with the O2 in the air pumped into the air distribution pipe. The e on the cathode surface - It undergoes a Fenton-like electronic reaction with O2 to generate HO·. As the stirring shaft rotates, HO· acts evenly on the compost pile, allowing the organic matter in the compost pile to fully react with the free radicals, thereby accelerating the compost humification process.

[0022] As a further improvement of the above scheme, in step S1, the organic waste is one or more of restaurant waste, kitchen waste, livestock manure, urban sludge, straw, garden waste and biogas residue;

[0023] The auxiliary material is one or more of wood chips, fungus residues and bran.

[0024] As a further improvement of the above scheme, in step S1, the moisture content of the compost pile is adjusted to between 55% and 65%, and the carbon-nitrogen ratio is adjusted to between 20:1 and 30:1.

[0025] As a further improvement of the above scheme, in step S2, the electrochemical power supply is controlled to output a constant voltage so that the compost pile runs at a constant voltage in the fermentation bin. Preferably, the constant voltage is 4 to 10V.

[0026] Since the present invention adopts the above technical solution, the beneficial effects of this application are:

[0027] The present invention provides an electrocatalytic Fenton-type reaction device for promoting compost humification, comprising a fermentation bin, a stirring assembly and a blower rotatably arranged in the fermentation bin, and an electrochemical power source; the stirring assembly comprises a stirring shaft, a driving motor connected to one end of the stirring shaft, the driving motor is arranged outside the bin wall of the fermentation bin, the other end of the stirring shaft passes through the fermentation bin and extends to the inner cavity of the fermentation bin, the stirring shaft is located on the outer wall of the inner cavity of the fermentation bin and is provided with a plurality of stirrers at intervals, one side of each stirrer is embedded with a cathode for gas diffusion, and the other side is provided with an air distribution pipe covered with air holes; each of the cathodes is anchored with an Fe-based catalyst; the stirring shaft is provided with a main air duct along its length, and the main air duct is connected to each of the air distribution pipes. The blower is connected to the main air duct through a pipeline, and is used to pump air into the main air duct; an anode is provided on the inner side of the fermentation bin wall, and the anode and the cathode are both electrically connected to the electrochemical power source through a wire; in such a configuration, the cathode is embedded in one side of the agitator, and an air distribution duct is provided on the other side of the agitator, and the blower pumps air into each air distribution duct, and O2 in the air is electrocatalyzed by the Fe-based catalyst near the cathode to produce HO·, which acts on the compost pile; the cathode is set on the agitator shaft, and while the agitator shaft rotates and stirs, the generated HO· can be evenly and directly dispersed into the compost pile, so that the organic matter in the compost pile reacts fully with the free radicals, which can accelerate the degradation of the difficult-to-degrade lignocellulose and improve the humification efficiency of the compost pile;

[0028] In addition, in the present application, the Fe-based catalyst is anchored on the cathode, so that the Fe-based catalyst is dispersed and loaded on the aerogel or porous carbon material of the cathode, so that the iron material is not easy to aggregate and deactivate, thereby eliminating the technical problem that the Fe-based catalyst is easily oxidized and deactivated.

[0029] 2. A reaction device and humification method for promoting compost humification by electrocatalytic Fenton-type composting provided by the first aspect, the steps of which include: mixing organic waste as compost raw materials with auxiliary materials, adjusting the moisture content and carbon-nitrogen ratio to obtain a compost pile; adding the compost pile to the inner cavity of a fermentation bin of the reaction device for promoting compost humification by electrocatalytic Fenton-type composting; connecting the electrochemical power supply of the cathode and the anode, and starting the stirring assembly and the blower, the blower pumping air into each air distribution pipe, the stirring shaft of the stirring assembly stirring intermittently while the cathode reacts with the O2 in the air pumped into the air distribution pipe, and the e on the cathode surface reacts with the cathode to form an electrode reaction. -The electro-Fenton reaction with O2 generates HO·, and as the stirring shaft rotates, HO· acts evenly on the compost pile, so that the organic matter in the compost pile fully reacts with the free radicals to accelerate the humification process of the compost. In the present invention, electrode stirring is used to promote the generated HO· to ​​fully react with the organic matter in the compost pile, and the generated HO· can act on more substances at the same time, thereby deepening the humification process. Through experimental measurement, the pH value of the electro-Fenton reaction provided by the present invention is 4.0-7.0, which shows that it has a wide adaptability range and does not require additional pH adjustment, effectively solving the pH limitation of the traditional Fenton technology combined with aerobic composting process. Compared with the traditional Fenton method, it has a more stable HO· production effect, and under the action of the stirrer on the stirring shaft, HO· fully diffuses in the solid waste medium, thereby improving the reaction activity. The electro-catalytic Fenton method provided by the present invention coupled with aerobic composting can degrade organic matter and shorten the composting maturity cycle, thereby improving the composting humification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of a reaction device for promoting compost humification by electrocatalysis-type Fenton disclosed in the present invention;

[0032] Figure 2 The present invention discloses a flow chart of a humification method of a reaction device for promoting compost humification by an electrocatalytic Fenton-type reaction.

[0033] Reference numerals:

[0034] 1. Fermentation chamber; 2. Blower; 3. Stirring assembly; 31. Stirring shaft; 32. Drive motor; 33. Stirrer; 34. Cathode; 35. Air distribution duct; 36. Main air duct

[0035] 4. Electrochemical power source; 5. Anode; 6. Gas treatment component; 7. Vacuum pump; 8. Feed inlet; 9. Discharge hopper; 10. Controller.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] Embodiment 1:

[0040] See also Figure 1 The present invention provides a reaction device for promoting compost humification by electrocatalysis Fenton, comprising a fermentation bin 1, a blower 2, a stirring assembly 3 rotatably arranged in the fermentation bin 1, and an electrochemical power source 4; specifically, the fermentation bin 1 is arranged vertically or horizontally. In the present invention, the fermentation bin 1 is arranged horizontally, and the outer wall of the fermentation bin 1 is wrapped with heat-insulating cotton to ensure the fermentation temperature therein;

[0041] The stirring assembly 3 includes a stirring shaft 31 and a driving motor 32 connected to one end of the stirring shaft 31. The driving motor 32 is arranged outside the wall of the fermentation bin 1. The other end of the stirring shaft 31 passes through the fermentation bin 1 and extends to the inner cavity of the fermentation bin 1. The stirring shaft 31 is located on the outer wall of the inner cavity of the fermentation bin 1. A plurality of stirrers 33 are arranged at intervals. A cathode 34 for gas diffusion is embedded on one side of each stirrer 33, and an air distribution pipe 35 covered with vents is arranged on the other side. Each cathode 34 is anchored with an Fe-based catalyst. agent; specifically, the stirrers 33 are arranged at intervals and staggered on the outer wall of the stirring shaft 31, so as to fully stir the compost pile and enable the HO· produced by the stirrer to directly and evenly act on the compost pile; in this embodiment, 8 stirrers 33 are arranged on the stirring shaft 31, and correspondingly, each stirrer 33 is respectively embedded with a cathode 34, and the stirring shaft 31 drives all cathodes 34 to rotate together; in some embodiments, 2 to 10 stirrers 33 can also be arranged, preferably, 6 to 10 stirrers 33 are arranged at intervals and staggered on the outer wall of the stirring shaft 31;

[0042] A main air duct 36 is provided inside the stirring shaft 31 along its length direction, and the main air duct 36 is connected to each of the air distribution pipes 35, and the blower 2 is connected to the main air duct 36 through a pipeline for pumping air therein; specifically, an air blower port connected to the main air duct 36 is also provided on the stirring shaft 31 along its radial direction, and the air blower port is arranged in a one-to-one correspondence with the air distribution pipes 35, so that the air pumped in by the blower 2 is transmitted to the corresponding air distribution pipes 35, and dispersed to the vicinity of the cathode 34 through the vents;

[0043] An anode 5 is provided on the inner side of the fermentation chamber 1, and the anode 5 and the cathode 34 are both electrically connected to the electrochemical power source 4 through wires;

[0044] In such a configuration, the cathode 34 is embedded in one side of the stirrer 33, and an air distribution pipe 35 is provided on the other side of the stirrer 33. The blower 2 pumps air into each air distribution pipe 35. O2 in the air is electrocatalyzed by the Fe-based catalyst near the cathode 34 to generate HO· to ​​act on the compost pile. The cathode 34 is set on the stirrer 33 of the stirring shaft 31. While the stirring shaft 31 rotates and stirs, the generated HO· can be evenly and directly dispersed into the compost pile, so that the organic matter in the compost pile reacts fully with the free radicals, which can accelerate the degradation of the difficult-to-degrade lignocellulose and improve the humification efficiency of the compost pile.

[0045] In addition, in the present application, the Fe-based catalyst is anchored on the cathode 34, so that the Fe-based catalyst is dispersedly loaded on the aerogel or porous carbon material of the cathode 34, so that the iron material is not easy to aggregate and deactivate, thereby eliminating the technical problem that the Fe-based catalyst is easily oxidized and deactivated.

[0046] As a further improvement of the above scheme, the electrocatalytic Fenton-type compost humification promoting device also includes a gas treatment component 6 and a vacuum pump 7 connected to the inner cavity of the fermentation chamber 1. The vacuum pump 7 is arranged between the fermentation chamber 1 and the gas treatment component 6, and is used to extract the gas generated by the reaction in the fermentation chamber 1 to the gas treatment component 6, and the gas is discharged after being processed by the gas treatment component 6.

[0047] As a preferred embodiment, the fermentation bin 1 is further provided with a feed inlet 8 for feeding the pile into the inner cavity of the fermentation bin 1, and a discharge hopper 9 for discharging the waste after fermentation; preferably, in this embodiment, the feed inlet 8 is arranged on the left side of the fermentation bin 1, and the drive motor 32, the blower 2 and the electrochemical power supply 4 of the stirring assembly 3 are arranged on the right side of the fermentation bin 1;

[0048] The feed inlet 8 is also provided with a sealed feed door that can be opened and closed, so as to facilitate the input of the mixed compost pile into the inner cavity of the fermentation bin 1 for reaction; correspondingly, a discharge port is provided at the bottom of the fermentation bin 1, and a discharge hopper 9 is provided at the discharge port to discharge the waste after fermentation.

[0049] As a preferred embodiment, the electrocatalytic Fenton-type device for promoting compost humification also includes a controller 10, and the drive motor 32, blower 2, electrochemical power supply 4, and vacuum pump 7 are all electrically connected to the controller 10; preferably, in this embodiment, the controller 10 is arranged on the top of the fermentation bin 1, and is used to control the start and stop, speed, rotation duration and rotation frequency of the drive motor 32; it is also used to control the start and stop of the blower 2 and the amount of air blowed; it is also used to control the on and off of the electrochemical power supply 4 and the corresponding voltage; it is also used to control the start and stop of the vacuum pump 7.

[0050] As a preferred embodiment, the material of the anode 5 is one of Ti, Pt, Al, Si, oxides or carbon-based composite materials. When preparing the anode 5, one of these materials can be selected.

[0051] As a preferred embodiment, the cathode 34 material includes a base material and a doping material doped and mixed in a preset ratio;

[0052] The substrate material is one of iron-carbon material, iron-nickel, and iron-cobalt-carbon material;

[0053] The doping material is one or more of aerogel, carbon fiber, mesoporous carbon, graphene, and diamond;

[0054] When preparing the cathode 34, one is selected from iron-carbon materials, iron-nickel, and iron-cobalt-carbon materials as the base material, and then any one, any two, any three, any four, or all are selected from aerogel, carbon fiber, mesoporous carbon, graphene, and diamond as the doping material, and they are doped into the base material according to a preset ratio to prepare the cathode 34; doping the cathode 34 material with one or more of aerogel, carbon fiber, mesoporous carbon, graphene, and diamond helps the absorption of O2 and the catalytic effect.

[0055] As a preferred embodiment, the Fe-based catalyst is one or more of FeOOH, nano-Fe2O3, and nano-iron-carbon particles; when the Fe-based catalyst is anchored on the cathode 34, one or more of FeOOH, nano-Fe2O3, and nano-iron-carbon particles are dispersed and loaded onto the doping material of the cathode 34, so that the iron material is not easy to aggregate and deactivate.

[0056] Embodiment 2:

[0057] See also Figure 2 The present invention also provides a reaction device and a humification method for promoting compost humification by using the electrocatalytic Fenton method provided in Example 1, the steps of which include:

[0058] S1: mixing organic waste as compost raw materials with auxiliary materials, adjusting the moisture content and carbon-nitrogen ratio, and obtaining a compost pile; specifically, the organic waste is one or more of food waste, kitchen waste, livestock manure, urban sludge, straw, garden waste and biogas residue; the auxiliary materials are one or more of sawdust, mushroom residue and bran;

[0059] Adjusting the moisture content of the compost pile to between 55% and 65%, for example, adjusting the moisture content of the compost pile to 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64% or 65%;

[0060] Adjusting the carbon-nitrogen ratio to between 20:1 and 30:1, for example, adjusting the carbon-nitrogen ratio to 20:1, 21:1, 22:1, 23:1, 24:1, 25:1, 26:1, 27:1, 28:1, 29:1 or 30:1;

[0061] S2: adding the compost pile into the inner cavity of the fermentation chamber 1 of the electrocatalytic Fenton-type reaction device for promoting compost humification;

[0062] The electrochemical power source 4 of the cathode 34 and the anode 5 is turned on, and the stirring assembly 3 and the blower 2 are started. The blower 2 pumps air into each air distribution pipe 35. The stirring shaft 31 of the stirring assembly 3 stirs intermittently while the cathode 34 reacts with the O2 in the air pumped into the air distribution pipe 35. The e on the surface of the cathode 34 - A Fenton-like electronic reaction occurs with O2 to generate HO·. As the stirring shaft 31 rotates, HO· acts evenly on the compost pile, so that the organic matter in the compost pile reacts fully with the free radicals to accelerate the compost humification process.

[0063] In this process, the electrochemical power source 4 is controlled to output a constant voltage so that the compost pile runs at a constant voltage in the fermentation bin 1. Preferably, the constant voltage is 4 to 10 V.

[0064] In the present invention, electrode stirring is used to promote the generated HO· to ​​fully react with organic matter in the compost pile, and the generated HO· can act on more substances at the same time, thereby deepening the humification process; through experimental measurement, the pH value of the electro-Fenton reaction provided by the present invention is 4.0-7.0, which shows that it has a wide adaptability range and does not require additional pH adjustment, effectively solving the pH limitation of the traditional Fenton technology combined with aerobic composting process; compared with the traditional Fenton method, it has a more stable HO· production effect, and under the action of the stirrer 33 on the stirring shaft 31, HO· diffuses fully in the solid waste medium, thereby improving the reaction activity; the electrocatalytic Fenton method provided by the present invention coupled with aerobic composting can degrade organic matter and shorten the composting maturity cycle, thereby improving the composting humification efficiency.

[0065] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An electrocatalytic Fenton-type reaction device for promoting compost humification, characterized in that: It includes a fermentation bin, a blower, a stirring assembly rotatably arranged in the fermentation bin, and an electrochemical power source; The stirring assembly includes a stirring shaft and a driving motor connected to one end of the stirring shaft, wherein the driving motor is arranged outside the wall of the fermentation bin, and the other end of the stirring shaft passes through the fermentation bin and extends to the inner cavity of the fermentation bin; The stirring shaft is located on the outer wall of the inner cavity of the fermentation bin, and a plurality of stirrers are arranged at intervals. A cathode for gas diffusion is embedded on one side of each stirrer, and an air distribution pipe covered with vents is arranged on the other side. An Fe-based catalyst is anchored on each cathode. A main air duct is provided inside the stirring shaft along its length direction, and the main air duct is connected to each of the air distribution pipes, and the blower is connected to the main air duct through a pipeline to pump air into the main air duct; An anode is arranged on the inner side of the fermentation chamber wall, and both the anode and the cathode are electrically connected to the electrochemical power source through a wire.

2. The electrocatalytic Fenton-type reaction device for promoting compost humification according to claim 1 is characterized in that: The electrocatalytic Fenton-type device for promoting compost humification also includes a gas treatment component and a vacuum pump connected to the inner cavity of the fermentation chamber. The vacuum pump is arranged between the fermentation chamber and the gas treatment component, and is used to extract the gas generated by the reaction in the fermentation chamber to the gas treatment component, and the gas is discharged after being processed by the gas treatment component.

3. The electrocatalytic Fenton-type reaction device for promoting compost humification according to claim 2 is characterized in that: The electrocatalytic Fenton-type compost humification promoting device also includes a controller, and the driving motor, the blower, the electrochemical power source, and the vacuum pump are all electrically connected to the controller.

4. The electrocatalytic Fenton-type compost humification reaction device according to any one of claims 1 to 3, characterized in that: The material of the anode is one of Ti, Pt, Al, Si, oxides or carbon-based composite materials.

5. The electrocatalytic Fenton-type reaction device for promoting compost humification according to claim 4 is characterized in that: The cathode material includes a base material and a doping material doped and mixed in a preset ratio; The substrate material is one of iron-carbon material, iron-nickel, and iron-cobalt-carbon material; The doping material is one or more of aerogel, carbon fiber, mesoporous carbon, graphene and diamond.

6. The electrocatalytic Fenton-type reaction device for promoting compost humification according to any one of claims 1 to 3, characterized in that: The Fe-based catalyst is one or more of FeOOH, nano Fe2O3, and nano iron-carbon particles.

7. The electrocatalytic Fenton-type reaction device for promoting compost humification according to any one of claims 1 to 3, characterized in that: The fermentation bin is also provided with a feed inlet for feeding the pile into the inner cavity of the fermentation bin, and a discharge hopper for discharging waste materials after fermentation.

8. A reaction device and humification method for electrocatalytic Fenton-promoting compost humification as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1: Mixing organic waste as compost raw materials with auxiliary materials, adjusting the moisture content and carbon-nitrogen ratio, and obtaining a compost pile; S2: adding the compost pile into the inner cavity of a fermentation chamber of a reaction device for promoting compost humification by electrocatalysis-type Fenton; Connect the electrochemical power supply of the cathode and anode, and start the stirring assembly and the blower; The blower pumps air into each air distribution pipe, and the stirring shaft of the stirring assembly stirs intermittently while the cathode reacts with the O2 in the air pumped into the air distribution pipe. - It undergoes a Fenton-like electronic reaction with O2 to generate HO·. As the stirring shaft rotates, HO· acts evenly on the compost pile, allowing the organic matter in the compost pile to fully react with the free radicals, thereby accelerating the compost humification process.

9. The humification method according to claim 8, characterized in that: In step S1, the organic waste is one or more of restaurant waste, kitchen waste, livestock manure, urban sludge, straw, garden waste and biogas residue; The auxiliary material is one or more of sawdust, fungus residue and bran; The moisture content of the compost pile is adjusted to between 55% and 65%, and the carbon-nitrogen ratio is adjusted to between 20:1 and 30:

1.

10. The humification method according to claim 8 or 9, characterized in that: In step S2, the electrochemical power source is controlled to output a constant voltage so that the compost pile runs at a constant pressure in the fermentation bin.

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