CN112296073A - Fermentation process for treating regenerated garbage - Google Patents
Fermentation process for treating regenerated garbage Download PDFInfo
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- CN112296073A CN112296073A CN202011224932.6A CN202011224932A CN112296073A CN 112296073 A CN112296073 A CN 112296073A CN 202011224932 A CN202011224932 A CN 202011224932A CN 112296073 A CN112296073 A CN 112296073A
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- 238000000855 fermentation Methods 0.000 title claims abstract description 60
- 230000004151 fermentation Effects 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 claims abstract description 87
- 238000012216 screening Methods 0.000 claims abstract description 34
- 239000000126 substance Substances 0.000 claims description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 239000004033 plastic Substances 0.000 claims description 44
- 229920003023 plastic Polymers 0.000 claims description 44
- 238000000926 separation method Methods 0.000 claims description 40
- 239000000428 dust Substances 0.000 claims description 37
- 238000005108 dry cleaning Methods 0.000 claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- 239000002689 soil Substances 0.000 claims description 27
- 230000005484 gravity Effects 0.000 claims description 24
- 239000003864 humus Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 20
- 239000002985 plastic film Substances 0.000 claims description 18
- 229920006255 plastic film Polymers 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 150000002739 metals Chemical class 0.000 claims description 8
- 229910003480 inorganic solid Inorganic materials 0.000 claims description 6
- 230000001172 regenerating effect Effects 0.000 claims description 6
- 239000002912 waste gas Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 230000001877 deodorizing effect Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 229920001131 Pulp (paper) Polymers 0.000 claims description 2
- 239000006148 magnetic separator Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 230000000379 polymerizing effect Effects 0.000 claims 1
- 238000004332 deodorization Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011085 pressure filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a fermentation process for treating regenerated garbage, which comprises the steps of feeding in a bin, unpacking and crushing in sequence, screening the crushed garbage by a roller type screening machine, and screening large-size materials, medium-size materials and small-size materials.
Description
Technical Field
The invention relates to the technical field of household garbage treatment, in particular to a fermentation process for treating regenerated garbage.
Background
Along with the rapid development of the socioeconomic rapid progress of China and the rapid improvement of the living standard of people, the garbage generated in the urban production and living process is rapidly increased, and the domestic garbage occupies land, pollutes the environment and has more obvious influence on the health of people.
The increasing of the amount of municipal domestic waste makes the waste treatment more and more difficult, and the problems of environmental pollution and the like caused by the increase gradually draw attention from all social circles.
The landfill and combustion of the garbage cause great pollution to the environment, although the garbage combustion power generation can utilize combustion power generation, a large amount of toxic gas and dust can be generated in the garbage combustion power generation process, metal and other incombustible substances contained in the garbage can form toxic caking after the garbage is combusted, and the caking still needs deep landfill, so that a combustion-free garbage treatment process is needed.
Disclosure of Invention
In order to solve the technical problem, the invention provides a fermentation process for treating regenerated garbage.
A fermentation process for treating regenerated garbage comprises the following steps:
1) feeding the garbage in the bin by a bin reverse stirring roller, conveying the garbage in a closed manner by a conveying belt, and screening out large-size iron in the conveying process;
2) unpacking and crushing, namely unpacking and crushing the conveyed garbage;
3) the roller screen is used for screening the unpacked and crushed garbage through a roller screening machine to screen out large-size materials, medium-size materials and small-size materials;
4) sorting large-size materials, conveying the large-size materials to a vibration negative pressure winnowing machine for sorting, and sorting heavy objects and large-size light objects;
5) sorting medium-sized materials, conveying the medium-sized materials to a vibration negative pressure winnowing machine for sorting, and sorting heavy objects and medium-sized light objects;
6) secondary crushing, namely discharging the large-size light objects through a cyclone collector and conveying the large-size light objects to a crusher for secondary crushing, wherein the large-size light objects are crushed into medium-size light objects;
7) performing small-size magnetic vortex separation, namely performing magnetic vortex separation on small-size materials through a magnetic vortex separator to separate iron, nonferrous metals, soil and organic matters, and fermenting the soil and the organic matters into decomposed soil in a fermentation tank A;
8) medium light magnetic vortex separation, discharging the medium light objects in the step 5) through a cyclone collector, carrying out magnetic vortex separation on the medium light objects in the step 6) and the medium light objects together through a magnetic vortex separator, and separating iron, nonferrous metals and plastic film paper light objects;
9) heavy magnetic vortex separation, wherein the heavy objects in the step 4) and the step 5) are conveyed to another magnetic vortex separator for magnetic vortex separation, and iron, nonferrous metals and impurities are separated;
10) and (4) specific gravity sorting, namely performing specific gravity sorting on the sundries in the step 9) by using a specific gravity sorting machine to sort out light objects, medium light objects and heavier objects.
Further, large-sized iron is sorted out by suspending a magnetic sorter while the conveyance is closed in step 1).
Further, a negative pressure dust collecting and deodorizing system is connected in the steps 1) to 3).
Further, a dust collector is connected between the fan of the cyclone collector and the cyclone collector body in the steps 6) and 8), and the gas exhausted by the negative pressure dust collecting and deodorizing system and the cyclone collector is discharged after reaching the standard after being treated by waste gas.
Further, separating the light plastic film paper in the step 8) into paper pulp substances, plastic film substances and water through a paper water separation system, enabling the water to enter a circulating water treatment system, dehydrating the plastic film substances, and enabling the dehydrated water to also enter the circulating water treatment system.
Further, the light plastic film paper in the step 8) and the light matter in the step 10) enter a fermentation tank B for fermentation, the light matter in the step 10) enters a fermentation tank C for fermentation, and the heavier matter in the step 10) enters a fermentation tank D for fermentation.
Further, the material fermented by the fermentation tank B is scattered and screened by a roller type scattering and screening machine to screen out humus soil substances, the screened material is subjected to friction dry cleaning, dust is collected by a dust collecting system in the process of the friction dry cleaning, a part of the humus soil substances are washed out by the friction dry cleaning, the material subjected to the friction dry cleaning is subjected to friction water cleaning, the material subjected to the friction water cleaning is subjected to sinking and floating specific gravity separation to obtain a sinking material and a floating material, the sinking material and the floating material are respectively discharged and dehydrated, the floating material is polymerized after dehydration, a circulating water changing treatment system is used for the sinking and floating specific gravity separation and the friction water cleaning, and the water separated from the sinking material and the floating material enters the circulating water treatment system.
Further, screening the fermented materials in the fermentation tank D by using a roller type screening machine to screen out humus soil substances, performing friction dry cleaning on the screened materials, collecting dust by using a dust collecting system in the process of friction dry cleaning, washing out a part of humus soil substances by using the friction dry cleaning, crushing the materials after the friction dry cleaning by using a roller crusher, scattering and screening the materials after the crushing by using the roller crusher by using a roller type scattering and screening machine, and screening out light inorganic solid substances and plastic substances.
Further, the material fermented by the fermentation tank C is scattered and screened by a roller scattering and screening machine to screen out humus soil substances, the screened material and the plastic substances in the fermentation tank D are subjected to friction dry cleaning, a part of the humus soil substances are washed out by the friction dry cleaning, dust is collected by a dust collecting system in the process of the friction dry cleaning, the materials after the friction dry cleaning are crushed are subjected to specific gravity separation to sort out heavy inorganic solid substances and miscellaneous plastics, the miscellaneous plastics are subjected to sinking and floating specific gravity separation to obtain sinking heavy plastics and floating light substances, the heavy plastics and the light substances are respectively discharged and dehydrated, the light substances are PPPE plastics after being dehydrated, the heavy plastics are dehydrated and then dried, the dust is collected by the dust collecting system in the drying process, the heavy plastics are dried and then sorted by an elastic sorting machine to sort out plastics and elastic gum substances, the sorted plastics are separated out different plastics by a triboelectric separation machine, and (3) a circulating water changing treatment system is used during the sinking and floating specific gravity separation, and water separated from heavy plastics and light materials enters the circulating water treatment system.
Further, the humus mud substances precipitated in the circulating water treatment system are discharged and then are subjected to pressure filtration to form a humus cake, and the water subjected to pressure filtration enters the circulating water treatment system.
The invention has the beneficial effects that:
the regenerative garbage treatment fermentation process can sort and classify garbage, divide the garbage into different sizes, sort the garbage types of different sizes respectively, reduce sorting difficulty and improve sorting efficiency, and ferment organic substances respectively after sorting, so that the garbage types in a fermentation tank are reduced, and the garbage treatment after fermentation is facilitated.
The invention firstly separates the large-size iron, and avoids the influence of the large-size iron on the subsequent separation steps.
According to the invention, through layer-by-layer separation and fermentation, a large amount of plastics in the garbage are finally separated, and the separated plastics have higher purity, so that pollution caused by plastic combustion and landfill is avoided, and other substances are separated in the treatment process.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a process flow chart of the fermentation tank B after fermentation;
FIG. 3 is a process flow diagram after fermentation in the fermentation tank C;
FIG. 4 is a process flow chart of the fermentation in the fermentation tank D.
Detailed Description
Detailed description of the invention with reference to fig. 1-4:
the invention discloses a fermentation process for treating regenerated garbage, which specifically comprises the following steps of:
1) feeding the garbage in the bin by a bin reverse poking roller, feeding the garbage in the bin by a conveyer belt for closed conveying, manually sorting out large-size iron during closed conveying or by a suspended magnetic separator, connecting a negative-pressure dust collection and deodorization system during feeding and closed conveying of the bin, and discharging gas discharged by the negative-pressure dust collection and deodorization system after the gas is treated to reach the standard;
2) unpacking and crushing, namely unpacking and crushing the conveyed garbage, tearing off plastic bags, cloth bags and the like, connecting a negative pressure dust collection and deodorization system during unpacking and crushing, and discharging gas discharged by the negative pressure dust collection and deodorization system after the waste gas treatment reaches the standard;
3) the roller screen is used for screening the unpacked and crushed garbage through a roller screening machine to screen out large-size materials, medium-size materials and small-size materials, the size of the large-size materials is larger than 110mm, the size of the medium-size materials is between 110mm and 30mm, the size of the small-size materials is smaller than 30mm, a negative pressure dust collection and deodorization system is connected when the roller screening machine is used for screening, and gas discharged by the negative pressure dust collection and deodorization system is discharged after reaching the standard through waste gas treatment;
4) sorting large-size materials, conveying the large-size materials to a vibration negative pressure winnowing machine for sorting, and sorting heavy objects and large-size light objects;
5) sorting medium-sized materials, conveying the medium-sized materials to a vibration negative pressure winnowing machine for sorting, and sorting heavy objects and medium-sized light objects;
6) secondary crushing, namely discharging large-size light objects through a cyclone collector and conveying the light objects to a crusher for secondary crushing, crushing the large-size light objects into medium-size light objects, connecting a dust collector between a fan of the cyclone collector and a cyclone collector body, and discharging gas discharged by the cyclone collector after the waste gas treatment reaches the standard;
7) performing small-size magnetic vortex separation, namely performing magnetic vortex separation on small-size materials through a magnetic vortex separator to separate iron, nonferrous metals, soil and organic matters, and fermenting the soil and the organic matters into decomposed soil in a fermentation tank A;
8) medium light magnetic vortex separation, discharging the medium light objects in the step 5) through a cyclone collector, carrying out magnetic vortex separation on the medium light objects and the medium light objects in the step 6) through a magnetic vortex separator, separating iron, nonferrous metal and plastic film paper light objects, connecting a dust collector between a fan of the cyclone collector and a cyclone collector body, and discharging gas discharged by the cyclone collector after the gas reaches the standard after being treated by waste gas;
9) heavy magnetic vortex separation, wherein the heavy objects in the step 4) and the step 5) are conveyed to another magnetic vortex separator for magnetic vortex separation, and iron, nonferrous metals and impurities are separated;
10) and (4) specific gravity sorting, namely performing specific gravity sorting on the sundries in the step 9) by using a specific gravity sorting machine to sort out light objects, medium light objects and heavier objects.
The light plastic film paper in the step 8) can be separated into pulp substances, plastic film substances and water through the paper-water separation system, the water enters the circulating water treatment system to dehydrate the plastic film substances, and the dehydrated water also enters the circulating water treatment system.
The light plastic film paper in the step 8) can also enter a fermentation tank B together with the light plastic film paper in the step 10) for fermentation, the medium light plastic film paper in the step 10) enters a fermentation tank C for fermentation, and the heavy plastic film paper in the step 10) enters a fermentation tank D for fermentation.
According to the invention, materials fermented by the fermentation tank B are scattered and screened by a roller type scattering and screening machine, humus soil substances are screened, the screened materials are subjected to friction dry cleaning, dust is collected by a dust collecting system in the process of the friction dry cleaning, a part of humus soil substances are washed by the friction dry cleaning, the materials subjected to friction dry cleaning are subjected to friction water washing, the materials subjected to friction water washing are subjected to sinking and floating specific gravity separation to obtain sinking materials and floating materials, the sinking materials and the floating materials are respectively discharged and dehydrated, the floating materials are polymerized after being dehydrated, a circulating water changing treatment system is used for the sinking and floating specific gravity separation and the friction water washing, and water separated from the sinking materials and the floating materials enters the circulating water treatment system.
The material fermented in the fermentation tank D is screened by a roller type screening machine to screen out the humus soil substances, the screened material is subjected to friction dry cleaning, dust is collected by a dust collection system in the process of the friction dry cleaning, a part of the humus soil substances are washed out by the friction dry cleaning, the material after the friction dry cleaning is crushed by a roller crusher, the material after the crushing by the roller crusher is scattered and screened by the roller type scattering screening machine, and the light inorganic solid substances and the plastic substances are screened out.
In the invention, materials fermented in a fermentation tank C are scattered and screened by a roller scattering and screening machine to screen out humus soil substances, the screened materials and plastic substances in a fermentation tank D are subjected to friction dry cleaning, a part of the humus soil substances are washed out by the friction dry cleaning, dust is collected by a dust collection system in the process of the friction dry cleaning, the materials after the friction dry cleaning are crushed are subjected to specific gravity separation to separate out heavy inorganic solid substances and miscellaneous plastics, the miscellaneous plastics are subjected to sinking and floating specific gravity separation to obtain sinking heavy plastics and floating light substances, the heavy plastics and the light substances are respectively discharged and dehydrated, the light substances are PPPE plastics after being dehydrated, the heavy plastics are dried after being dehydrated and then dried, the heavy plastics are dried and then separated by an elastic separator to separate out plastics and elastic gum substances, and the separated plastics are separated out different plastics by a friction electric separation machine, and (3) a circulating water changing treatment system is used during the sinking and floating specific gravity separation, and water separated from heavy plastics and light materials enters the circulating water treatment system.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A fermentation process for treating regenerated garbage is characterized by comprising the following steps: the method comprises the following steps:
1) feeding the garbage in the bin by a bin reverse stirring roller, conveying the garbage in a closed manner by a conveying belt, and screening out large-size iron in the conveying process;
2) unpacking and crushing, namely unpacking and crushing the conveyed garbage;
3) the roller screen is used for screening the unpacked and crushed garbage through a roller screening machine to screen out large-size materials, medium-size materials and small-size materials;
4) sorting large-size materials, conveying the large-size materials to a vibration negative pressure winnowing machine for sorting, and sorting heavy objects and large-size light objects;
5) sorting medium-sized materials, conveying the medium-sized materials to a vibration negative pressure winnowing machine for sorting, and sorting heavy objects and medium-sized light objects;
6) secondary crushing, namely discharging the large-size light objects through a cyclone collector and conveying the large-size light objects to a crusher for secondary crushing, wherein the large-size light objects are crushed into medium-size light objects;
7) performing small-size magnetic vortex separation, namely performing magnetic vortex separation on small-size materials through a magnetic vortex separator to separate iron, nonferrous metals, soil and organic matters, and fermenting the soil and the organic matters into decomposed soil in a fermentation tank A;
8) medium light magnetic vortex separation, discharging the medium light objects in the step 5) through a cyclone collector, carrying out magnetic vortex separation on the medium light objects in the step 6) and the medium light objects together through a magnetic vortex separator, and separating iron, nonferrous metals and plastic film paper light objects;
9) heavy magnetic vortex separation, wherein the heavy objects in the step 4) and the step 5) are conveyed to another magnetic vortex separator for magnetic vortex separation, and iron, nonferrous metals and impurities are separated;
10) and (4) specific gravity sorting, namely performing specific gravity sorting on the sundries in the step 9) by using a specific gravity sorting machine to sort out light objects, medium light objects and heavier objects.
2. The regenerative waste treatment fermentation process according to claim 1, wherein: separating out large-size iron by a suspended magnetic separator during closed conveying in the step 1).
3. The fermentation process for treating regenerated garbage according to claim 2, characterized in that: connecting a negative pressure dust collecting and deodorizing system in the steps 1) to 3).
4. The regenerative waste treatment fermentation process according to claim 3, wherein: and (3) connecting a dust collector between the fan of the cyclone collector and the cyclone collector body in the steps 6) and 8), and discharging the gas exhausted by the negative pressure dust collecting and deodorizing system and the cyclone collector after the waste gas treatment reaches the standard.
5. The fermentation process for treating regenerated garbage according to claim 4, characterized in that: separating paper pulp substances, plastic film substances and water from the plastic film paper light substances in the step 8) through a paper water separation system, enabling the water to enter a circulating water treatment system, dehydrating the plastic film substances, and enabling the dehydrated water to also enter the circulating water treatment system.
6. The fermentation process for treating regenerated garbage according to claim 4, characterized in that: the light plastic film paper in the step 8) and the light matter in the step 10) enter a fermentation tank B for fermentation, the light matter in the step 10) enters a fermentation tank C for fermentation, and the heavier matter in the step 10) enters a fermentation tank D for fermentation.
7. The fermentation process for treating regenerated garbage according to claim 6, characterized in that: and B, scattering and screening the material fermented by the fermentation tank B by using a roller type scattering and screening machine, screening out humus soil substances, performing friction dry cleaning on the screened material, collecting dust by using a dust collecting system in the process of friction dry cleaning, washing out a part of humus soil substances by using the friction dry cleaning, performing friction water washing on the material subjected to friction dry cleaning, performing sink-float specific gravity separation on the material subjected to friction water washing to obtain a sink material and a floating material, discharging and dehydrating the sink material and the floating material respectively, dehydrating and polymerizing the floating material, wherein a circulating water changing treatment system is used for the sink-float specific gravity separation and the friction water washing, and water removed from the sink material and the floating material enters the circulating water treatment system.
8. The regenerative waste treatment fermentation process according to claim 7, wherein: d, screening the fermented materials in the fermentation tank by using a roller type screening machine to screen out humus soil substances, carrying out friction dry cleaning on the screened materials, collecting dust by using a dust collecting system in the process of friction dry cleaning, washing out a part of humus soil substances by using the friction dry cleaning, crushing the materials after the friction dry cleaning by using a roller crusher, scattering and screening the materials after the materials are crushed by using the roller type scattering screening machine, and screening out light inorganic solid substances and plastic substances.
9. The regenerative waste treatment fermentation process of claim 8, wherein: breaking and screening the material fermented in the fermentation tank C by a roller type breaking and screening machine to screen out humus soil substances, carrying out friction dry cleaning on the screened material and the plastic substances in the fermentation tank D, washing out a part of humus soil substances by the friction dry cleaning, collecting dust by a dust collecting system in the process of the friction dry cleaning, crushing the cleaned substances, carrying out specific gravity separation to separate out heavy inorganic solid substances and miscellaneous plastics, carrying out sinking and floating specific gravity separation on the miscellaneous plastics to obtain sinking heavy plastics and floating light substances, respectively discharging and dehydrating the heavy plastics and the light substances, dehydrating the light substances into PPPE plastics, dehydrating the heavy plastics and then drying the heavy plastics, collecting dust by a dust collecting system in the drying process, sorting the heavy plastics and the floating light substances by an elastic sorting machine after drying the heavy plastics, sorting the plastics and the elastic gum substances, and sorting the different plastics by a friction electric sorting machine, and (3) a circulating water changing treatment system is used during the sinking and floating specific gravity separation, and water separated from heavy plastics and light materials enters the circulating water treatment system.
10. The regenerative waste treatment fermentation process of claim 9, wherein: discharging the humus mud substances precipitated in the circulating water treatment system, then performing filter pressing to obtain a humus cake, and feeding the filter-pressed water into the circulating water treatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011224932.6A CN112296073A (en) | 2020-11-05 | 2020-11-05 | Fermentation process for treating regenerated garbage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011224932.6A CN112296073A (en) | 2020-11-05 | 2020-11-05 | Fermentation process for treating regenerated garbage |
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| CN202011224932.6A Withdrawn CN112296073A (en) | 2020-11-05 | 2020-11-05 | Fermentation process for treating regenerated garbage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522927A (en) * | 2021-06-21 | 2021-10-22 | 山西苏金源生物科技有限公司 | Operation method of organic waste treatment system |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522927A (en) * | 2021-06-21 | 2021-10-22 | 山西苏金源生物科技有限公司 | Operation method of organic waste treatment system |
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Application publication date: 20210202 |