CN103056145A - Kitchen waste processing method - Google Patents
Kitchen waste processing method Download PDFInfo
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- CN103056145A CN103056145A CN2012105670617A CN201210567061A CN103056145A CN 103056145 A CN103056145 A CN 103056145A CN 2012105670617 A CN2012105670617 A CN 2012105670617A CN 201210567061 A CN201210567061 A CN 201210567061A CN 103056145 A CN103056145 A CN 103056145A
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- food waste
- processing method
- changing food
- waste processing
- fermentation
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- 238000003672 processing method Methods 0.000 title claims abstract description 27
- 239000010806 kitchen waste Substances 0.000 title abstract 6
- 238000000855 fermentation Methods 0.000 claims abstract description 26
- 230000004151 fermentation Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000011440 grout Substances 0.000 claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 239000003337 fertilizer Substances 0.000 claims abstract description 4
- 239000010794 food waste Substances 0.000 claims description 48
- 239000010813 municipal solid waste Substances 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 26
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 239000004519 grease Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 4
- 238000005194 fractionation Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000012263 liquid product Substances 0.000 claims description 3
- 230000020477 pH reduction Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 239000007789 gas Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000013067 intermediate product Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 abstract description 3
- 238000004537 pulping Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 239000010791 domestic waste Substances 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 241000256113 Culicidae Species 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 239000003225 biodiesel Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the field of kitchen waste processing, in particular to a kitchen waste processing method which comprises the following steps that: 1) materials easy to smash in kitchen waste is separated through a pulping machine in a restaurant, and waste grout is prepared; 2) the waste grout is inputted into a feeding tank through a pumping tank truck to be fermented; 3) the fermented waste grout is extracted to obtain oil through a CO2 supercritical method in an extraction tank, and non oil materials enter into a fermentation system to carry out anaerobic fermentation to obtain biogas; and 4) methane and CO2 are obtained through separation and purification from the biogas through a gas separation device. According to the kitchen waste processing method, the yield of the oil and the gases is high, intermediate products produced in the processing process can be recycled, biogas residues obtained through the separation can be used for making fertilizers, obtained products of the kitchen waste processing is prevented from causing secondary environment pollution, and environment protection is benefited.
Description
Technical field
The present invention relates to the changing food waste process field, particularly, the present invention relates to a kind of changing food waste processing method.
Background technology
Changing food waste refers to food waste and the food residues of family, school, machine-operated canteen and catering industry, it is the chief component of domestic waste, compare with Other Waste, have that water content is large, content of organics is many, fat content and the characteristics such as salt content is high, nutrient is abundant, have very large recycling and be worth.
Before this, the feed that changing food waste is raised pigs mainly as Outskirts of City because its source more complicated very likely causes transmission, is now prohibited be used to feeding by government.And in daily life, the resident sneaks into changing food waste in the house refuse usually, delivers to garbage collection points by polybag, makes the composition of domestic waste and characteristic that variation occur.Changing food waste has greatly polluted surrounding environment depositing, collect, in transhipment and the garbage loading embeading process, because its water content and content of organics are higher, very easily rot within a short period of time smelly and grow mosquitos and flies etc.In addition, the method of disposal of municipal refuse has usually burns and landfill, if domestic waste is burned, because the moisture of changing food waste is usually up to about 90%, caloric value is 2100～3100kJ/kg, burn together with other rubbish, the caloric value that not only can not satisfy waste incineration and generating electricity requires (being more than the 5000kJ/kg), can cause on the contrary incinerator to burn insufficient and the generation dioxin; If house refuse is carried out landfill, can should not process because the changing food waste moisture of sneaking into is high equally.And burning, landfill all can cause the waste of large amount of organic, so changing food waste is necessary to process separately.
Raising along with people's environmental protection consciousness; and changing food waste is convenient to the separately characteristics of collection; can progressively realize changing food waste separately collection and disposal fully; thereby can alleviate the intractability of domestic waste; have wide market prospects; so need us to accelerate development to the kitchen garbage treater device; reducing garbage bulk; when removing the rubbish stink; explore how further to reduce miniature biochemical treatment facility cost and operating cost, be convenient to further promotion and application.
Existing changing food waste treatment technology mainly is that changing food waste is utilized chemistry and biotechnology manufacture oil and combustible gas, but ubiquity product output capacity is low, and the intermediate product that processing procedure produces causes secondary pollution problems to environment.How changing food waste processing method more efficient, environmental protection is provided is present problem demanding prompt solution.
Summary of the invention
The object of the invention is to, for addressing the above problem, provide a kind of changing food waste processing method.
Changing food waste processing method of the present invention may further comprise the steps:
1) at the restaurant changing food waste is isolated easy comminuted material by pulper, make the rubbish slurries;
2) the rubbish slurries are input to head tank through pump cucurbitula car, ferment;
3) the rubbish slurries after will fermenting are used CO in extractor
2Supercritical methanol technology extracts grease, and non-grease material enters and carries out anaerobic fermentation in the fermentation system, makes biogas;
4) obtain methane and CO by gas fractionation unit isolation of purified from biogas
2
According to changing food waste processing method of the present invention, further comprise step 5):
5) the solid-liquid product after the fermentation is after solid-liquid separation system separates, and gained natural pond liquid enters step 2) described head tank participation fermentation, gained natural pond slag makes fertilizer.
According to changing food waste processing method of the present invention, above-mentioned solid-liquid separation system is preferably the spiral-flow type solid-liquid separation system, generally is to adopt centrifugation that water content is reduced to about 80%, and gained solid natural pond slag form was mud cake after it separated.
According to changing food waste processing method of the present invention, comprise tank body 11 and underframe 12, wherein, the top of described tank body 11 is provided with top cover 1;
Described tank body 11 inner and upper are provided with grid 2, and described tank body 11 bottoms are provided with rotary cutter 4, and described rotary cutter 4 is connected with motor 7 in being located at underframe 12 by bearing 5 and shaft coupling 6;
The bottom of described tank body 11 is provided with the pulp pipeline and passes underframe 12 sidewalls, and the pulp pipe head is provided with gate valve 9, and the port of export is provided with grout outlet snap joint 10.When changing food waste pulper work of the present invention, grout outlet snap joint 10 is connected with outside slurry can, discharge when requiring when the slurrying amount reaches, unclamp gate valve 9, the changing food waste slurries that make are discharged in the external slurry can by grout outlet snap joint 10 by the pulp pipeline.
Pulper slurrying step of the present invention is as follows: open top cover 1, the changing food waste charging is discharged outside the tank body 11 through the solids that the bulky grain that grid 2 filters to isolate is difficult for pulverizing in grid 2 enters tank body 11; Starter motor 7 is pulverized by shaft coupling 6 and the rubbish in 4 pairs of tank bodies of bearing 5 driven rotary cutting knifes 11, and the rubbish slurries are discharged in the external slurry can through gate valve 9 and grout outlet snap joint 10 by the pulp pipeline after pulverizing.
According to changing food waste processing method of the present invention, step 2) described fermentation process is two-part wet type anaerobic fermentation, first paragraph has the less hydrolytic decomposition pot of individual capacity, material was at about 2-3 of this time of staying days, because hydrolytic process pH value descends, and lower pH value can suppress the activity of anaerobic bacteria, therefore, needs hydrolysis and two steps of anaerobic fermentation are separated and carries out.Material after the hydrolysis enters main fermentation tank and carries out anaerobic fermentation, and material probably stops after 20-24 days and finishes sweat.
According to changing food waste processing method of the present invention, step 2) with before the fermentation of rubbish slurries inputs head tank, can be to the rubbish slurries acidification that is hydrolyzed.
According to changing food waste processing method of the present invention, the described CO of step 3)
2Supercritical methanol technology, be common in pharmaceutical field, concrete steps are: in extractor with material directly be in supercritical carbon dioxide and contact, oil content in the material can be dissolved in the postcritical carbon dioxide solvent, step-down is that oil content is separated out recovery again behind the solvent carbon dioxide outflow extractor, and carbon dioxide again pressurizes and enters extractor.CO
2Supercritical methanol technology, extraction process is simple, and the de-oiling rate is high, and extractant is additional by internal system, has not only utilized part waste gas, has also extracted high-quality partial elements in the changing food waste, makes simultaneously the synthetic obstetric output capacity of system obtain lifting.
According to changing food waste processing method of the present invention, the described fermentation system of step 3) is methane-generating pit, particularly, this methane-generating pit is cylindrical fermentation tank, because fermentation need to be kept certain temperature, so inwall is provided with heater, tank deck is provided with agitator, so that Flow of Goods and Materials.
According to changing food waste processing method of the present invention, the CO that isolation of purified obtains in the step 4)
2Turn back to and participate in oil and grease extracting in the extractor.
According to changing food waste processing method of the present invention, described gas fractionation unit is pressure-swing absorption apparatus.Obtain pure methane through this device isolation of purified and can be used as fuel storage use, the pure CO of acquisition
2Can be used as extraction feed and participate in above-mentioned oil and grease extracting step.
Changing food waste processing method of the present invention, grease and gas output capacity are high, and the intermediate product that processing procedure produces can be recycling, and separating the natural pond slag that obtains can composting, avoids changing food waste to process products therefrom secondary pollution environment, is conducive to environmental protection.
Description of drawings
Fig. 1 is changing food waste process flow schematic diagram of the present invention.
Fig. 2 is the structural representation of pulper of the present invention.
The accompanying drawing sign
1, top cover 2, grid 3, access hole
4, rotary cutter 5, bearing 6, shaft coupling
7, motor 8, roller 9, gate valve
10, grout outlet snap joint 11, tank body 12, underframe
13, hinge
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Changing food waste processing method of the present invention, concrete operation step is as follows:
1) locates at the restaurant, changing food waste is isolated easy comminuted material by pulper, make the rubbish slurries;
2) the rubbish slurries are transported to the head tank place through pump cucurbitula car, input rubbish slurries ferment; Before with the fermentation of rubbish slurries inputs head tank, can be to the rubbish slurries acidification that is hydrolyzed;
3) the rubbish slurries after will fermenting are used CO in extractor
2Supercritical methanol technology extracts grease, and non-grease material enters and carries out anaerobic fermentation in the fermentation system, makes biogas; The grease that extracts is for the preparation of biodiesel.
4) the above-mentioned biogas that makes obtains methane and CO by the pressure-swing absorption apparatus isolation of purified
2
5) the solid-liquid product after the fermentation can separate through solid-liquid separation system, and gained natural pond liquid enters step 2 after separating) described head tank participation fermentation, gained natural pond slag can make fertilizer.Isolation of purified obtains pure methane and can be used as fuel storage use, the pure CO of acquisition
2Can be used as extraction feed and participate in above-mentioned oil and grease extracting step.
Pulper of the present invention as shown in Figure 2, pulping process is as follows: open top cover 1, the changing food waste charging is discharged outside the tank body 11 through the solids that bulky grain that grid 2 filters to isolate is difficult for pulverizing in grid 2 enters tank body 11; Starter motor 7 is pulverized by shaft coupling 6 and the rubbish in 4 pairs of tank bodies of bearing 5 driven rotary cutting knifes 11, and the rubbish slurries are discharged in the external slurry can through gate valve 9 and grout outlet snap joint 10 by the pulp pipeline after pulverizing.The machine barrel bottom of described pulverizer 1 is provided with access hole 7, is used for maintenance Disintegrating knife 5; The bottom sides of described slurry can 2 is provided with the urgent grout outlet 10 of slurry can, and when stopping up appearred in slurry can grout outlet 9, grout outlet was discharged the rubbish slurries thus.
Above-mentioned top cover 1 links to each other with tank body 11 by hinge 13.The raster width of described grid 2 is 30mm.The lower sides rotary cutter place of described tank body 11 is provided with access hole 3, is used for maintenance rotary cutter 4.The bottom of the underframe 12 of described pulper is provided with roller 8, makes things convenient for the movement of pulper.
Claims (8)
1. changing food waste processing method may further comprise the steps:
1) at the restaurant changing food waste is isolated easy comminuted material by pulper, make the rubbish slurries;
2) the rubbish slurries are input to head tank through pump cucurbitula car, ferment;
3) the rubbish slurries after will fermenting are used CO in extractor
2Supercritical methanol technology extracts grease, and non-grease material enters and carries out anaerobic fermentation in the fermentation system, makes biogas;
4) obtain methane and CO by gas fractionation unit isolation of purified from biogas
2
2. changing food waste processing method according to claim 1 is characterized in that, further comprises step 5):
5) the solid-liquid product after the fermentation is after solid-liquid separation system separates, and gained natural pond liquid enters step 2) described head tank participation fermentation, gained natural pond slag makes fertilizer.
3. changing food waste processing method according to claim 2 is characterized in that, the described solid-liquid separation system of step 5) is the spiral-flow type solid-liquid separation system.
4. changing food waste processing method according to claim 1 is characterized in that, described pulper comprises tank body (11) and underframe (12), and wherein, the top of described tank body (11) is provided with top cover (1);
Described tank body (11) inner and upper is provided with grid (2), and described tank body (11) bottom is provided with rotary cutter (4), and described rotary cutter (4) is connected by bearing (5) and shaft coupling (6) motor (7) interior with being located at underframe (12);
The bottom of described tank body (11) is provided with the pulp pipeline and passes underframe (12) sidewall, and the pulp pipe head is provided with gate valve (9), and the port of export is provided with grout outlet snap joint (10).
5. changing food waste processing method according to claim 1 is characterized in that step 2) with before the fermentation of rubbish slurries input head tank, acidification is hydrolyzed.
6. changing food waste processing method according to claim 1 is characterized in that, the described fermentation system of step 3) is methane-generating pit.
7. changing food waste processing method according to claim 1 is characterized in that, the CO that isolation of purified obtains in the step 4)
2Turn back to and participate in oil and grease extracting in the extractor.
8. changing food waste processing method according to claim 1 is characterized in that, the described gas fractionation unit of step 4) is pressure-swing absorption apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567061.7A CN103056145B (en) | 2012-12-24 | 2012-12-24 | Kitchen waste processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567061.7A CN103056145B (en) | 2012-12-24 | 2012-12-24 | Kitchen waste processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103056145A true CN103056145A (en) | 2013-04-24 |
| CN103056145B CN103056145B (en) | 2015-03-18 |
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| CN201210567061.7A Active CN103056145B (en) | 2012-12-24 | 2012-12-24 | Kitchen waste processing method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272830A (en) * | 2013-05-31 | 2013-09-04 | 鄂尔多斯市城市矿产研究开发有限责任公司 | Harmless treatment process of kitchen wastes |
| CN105107832A (en) * | 2015-09-24 | 2015-12-02 | 宫渤海 | Kitchen waste resource recycling mode |
| CN106623349A (en) * | 2016-10-31 | 2017-05-10 | 广州博善生物科技股份有限公司 | Kitchen waste on-site treatment method |
| CN107497818A (en) * | 2016-06-14 | 2017-12-22 | 许明东 | The Application way of the perishable rubbish sewer pipe blowdown resource of town and country kitchen environmental sanitation |
| CN108465694A (en) * | 2018-03-19 | 2018-08-31 | 南通市中京机械有限公司 | Supercritical water oxidation garbage disposal ablating device |
| CN109053283A (en) * | 2018-08-27 | 2018-12-21 | 广西能创农业集团有限公司 | A method of organic fertilizer is prepared using kitchen garbage |
| CN109704386A (en) * | 2019-01-17 | 2019-05-03 | 山东省农业科学院作物研究所 | A kind of biogas residue fertilizing method conducive to farmland volume increase |
| CN109804746A (en) * | 2019-01-17 | 2019-05-28 | 山东省农业科学院作物研究所 | A kind of field sand Carbon fixation method |
| CN110586607A (en) * | 2018-06-13 | 2019-12-20 | 河南万容环境科技有限公司 | Household garbage treatment method |
| CN112142152A (en) * | 2020-08-13 | 2020-12-29 | 同济大学 | Biogas slurry solid-liquid separation treatment method |
| CN113967366A (en) * | 2021-11-26 | 2022-01-25 | 天津商业大学 | Method for three-phase separation of kitchen garbage by supercritical fluid |
| CN114853267A (en) * | 2022-04-22 | 2022-08-05 | 北京交通大学 | A high-efficient oil extraction productivity system for kitchen garbage |
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| CN107497818A (en) * | 2016-06-14 | 2017-12-22 | 许明东 | The Application way of the perishable rubbish sewer pipe blowdown resource of town and country kitchen environmental sanitation |
| CN106623349A (en) * | 2016-10-31 | 2017-05-10 | 广州博善生物科技股份有限公司 | Kitchen waste on-site treatment method |
| CN108465694A (en) * | 2018-03-19 | 2018-08-31 | 南通市中京机械有限公司 | Supercritical water oxidation garbage disposal ablating device |
| CN108465694B (en) * | 2018-03-19 | 2019-01-11 | 南通市中京机械有限公司 | Supercritical water oxidation garbage disposal ablating device |
| CN110586607A (en) * | 2018-06-13 | 2019-12-20 | 河南万容环境科技有限公司 | Household garbage treatment method |
| CN110586607B (en) * | 2018-06-13 | 2021-08-17 | 中原环资科技有限公司 | Household garbage treatment method |
| CN109053283A (en) * | 2018-08-27 | 2018-12-21 | 广西能创农业集团有限公司 | A method of organic fertilizer is prepared using kitchen garbage |
| CN109804746A (en) * | 2019-01-17 | 2019-05-28 | 山东省农业科学院作物研究所 | A kind of field sand Carbon fixation method |
| CN109704386A (en) * | 2019-01-17 | 2019-05-03 | 山东省农业科学院作物研究所 | A kind of biogas residue fertilizing method conducive to farmland volume increase |
| CN109704386B (en) * | 2019-01-17 | 2021-11-26 | 山东省农业科学院作物研究所 | Biogas residue fertilizing method beneficial to farmland yield increase |
| CN109804746B (en) * | 2019-01-17 | 2022-02-01 | 山东省农业科学院作物研究所 | Method for carbon sequestration of field sandy soil |
| CN112142152A (en) * | 2020-08-13 | 2020-12-29 | 同济大学 | Biogas slurry solid-liquid separation treatment method |
| CN112142152B (en) * | 2020-08-13 | 2022-05-31 | 同济大学 | Biogas slurry solid-liquid separation treatment method |
| CN113967366A (en) * | 2021-11-26 | 2022-01-25 | 天津商业大学 | Method for three-phase separation of kitchen garbage by supercritical fluid |
| CN114853267A (en) * | 2022-04-22 | 2022-08-05 | 北京交通大学 | A high-efficient oil extraction productivity system for kitchen garbage |
| CN114853267B (en) * | 2022-04-22 | 2023-08-08 | 北京交通大学 | Efficient oil extraction and capacity system for kitchen waste |
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