CN112496013A - Kitchen waste anaerobic composting fermentation reduction treatment method - Google Patents
Kitchen waste anaerobic composting fermentation reduction treatment method Download PDFInfo
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- CN112496013A CN112496013A CN202011611492.XA CN202011611492A CN112496013A CN 112496013 A CN112496013 A CN 112496013A CN 202011611492 A CN202011611492 A CN 202011611492A CN 112496013 A CN112496013 A CN 112496013A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000000855 fermentation Methods 0.000 title claims abstract description 19
- 230000004151 fermentation Effects 0.000 title claims abstract description 18
- 238000009264 composting Methods 0.000 title claims abstract description 16
- 230000009467 reduction Effects 0.000 title claims abstract description 14
- 239000010806 kitchen waste Substances 0.000 title claims description 40
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 34
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 11
- 239000002361 compost Substances 0.000 claims abstract description 9
- 239000010865 sewage Substances 0.000 claims abstract description 7
- 241000894006 Bacteria Species 0.000 claims abstract description 5
- 208000035143 Bacterial infection Diseases 0.000 claims abstract description 5
- 241000588724 Escherichia coli Species 0.000 claims abstract description 5
- 208000022362 bacterial infectious disease Diseases 0.000 claims abstract description 5
- 244000052616 bacterial pathogen Species 0.000 claims abstract description 4
- 239000003864 humus Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 22
- 230000018044 dehydration Effects 0.000 claims description 18
- 238000006297 dehydration reaction Methods 0.000 claims description 18
- 239000002699 waste material Substances 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 238000007885 magnetic separation Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 claims description 4
- 239000003337 fertilizer Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 244000005700 microbiome Species 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract 1
- 239000003895 organic fertilizer Substances 0.000 abstract 1
- 239000003516 soil conditioner Substances 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009283 thermal hydrolysis Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/02—Apparatus for the manufacture
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Manufacturing & Machinery (AREA)
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kitchen garbage anaerobic composting fermentation reduction treatment method, which is mainly divided into four main treatment units: the kitchen garbage treatment system comprises a garbage pretreatment unit, a garbage anaerobic fermentation composting treatment unit, a sewage treatment unit and a waste gas treatment unit, wherein kitchen garbage is unloaded and then enters a storage bin for being pre-disinfected, an ozone generator is adopted for generating ozone for the pre-disinfection, ozone gas with a certain concentration passes through a disinfection pipe network arranged in the storage bin and is fully contacted with the garbage, and harmful bacteria such as escherichia coli and the like in the garbage are inhibited or killed, so that the bacterial infection risk of operators is increased, the continuous, closed and automatic operation of the kitchen garbage is realized, the environmental pollution caused by manual sorting is avoided, the labor cost is reduced, in the treatment process, the damage to equipment is reduced, meanwhile, organic matters are converted into stable humus substances from an unstable state, the compost product does not contain pathogenic bacteria, and the kitchen garbage is processed into a good soil conditioner and organic fertilizer.
Description
Technical Field
The invention belongs to the relevant technical field of kitchen waste treatment, and particularly relates to a kitchen waste anaerobic composting fermentation reduction treatment method.
Background
According to the domestic garbage classification management method and regulations in China, kitchen waste is a perishable component generated by classifying domestic garbage, and the generation source of the kitchen waste is resident families. According to the development process and the current situation of domestic garbage classification in China, the domestic garbage classification effect in most of cities is not obvious at present, and the outstanding characteristic is that the purity of kitchen garbage is not high. In addition, the residential kitchen garbage at the present stage is characterized by being bagged and completely sealed, and is not beneficial to subsequent impurity removal, screening and magnetic separation processes. Corresponding measures need to be taken in the preprocessing step.
The existing kitchen garbage sorting and processing technology has the following problems: at present, kitchen waste has various problems, and waste sorting is unreasonable, mainly comprises manual sorting, hydraulic sorting and crushing sorting. Manual sorting can make sorting personnel contact rubbish in a large number, has both caused a large amount of work to occupy, has increased sorting personnel's healthy risk simultaneously, and work efficiency is extremely low simultaneously. Water conservancy letter sorting utilizes the water to distinguish into floating and two kinds of rubbish of sediment in with rubbish, then still contains a large amount of animal and vegetable oil and pectin etc. in the rubbish from cooking, utilizes water conservancy letter sorting not only can influence letter sorting effect, still can cause a large amount of sewage to produce, when rubbish letter sorting effect is not good, still causes a large amount of new pollutants, greatly increased environmental risk and processing cost. Crushing type sorting also faces a plurality of problems at present, and a large amount of non-biodegradable substances enter garbage together in the crushing process, such as harmful substances of plastic products and the like. Meanwhile, the control of the particle size can also cause a series of problems of incapability of recycling or energy consumption increase in the post treatment and the like. After the kitchen waste is subjected to thermal hydrolysis, plastic bags, woven bags and the like mixed in the kitchen waste are subjected to high-temperature and high-pressure treatment, serious deformation and shrinkage are generated, and even the plastic bags, the woven bags and the like are intertwined together. And hydraulic pressure squeezes just contrary, and kitchen garbage is little with the contact surface of equipment, can not take place phenomenon such as winding, and its hydraulic strength is also enough to destroy glass bottle wherein simultaneously.
Disclosure of Invention
The invention aims to provide a kitchen waste anaerobic compost fermentation reduction treatment method to solve the problem of unreasonable sorting of the waste in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a kitchen waste anaerobic composting fermentation reduction treatment method comprises the following steps:
firstly, discharging kitchen waste, then putting the discharged kitchen waste into a storage bin, and generating ozone by an ozone generator for pre-disinfection;
secondly, conveying the disinfected kitchen waste to a crusher by a double-screw conveyor for crushing treatment, and feeding a leachate part generated in the crushing process into a desanding unit;
thirdly, feeding the crushed kitchen waste into a magnetic separation unit, separating metal substances in the waste, and screening by a drum screen to obtain undersize matters smaller than 100 mm;
fourthly, the screened kitchen waste enters a screw extrusion dehydration unit, the squeezed solid slag enters a rear-section crushing treatment system, and the squeezed organic slurry enters a sewage treatment system after sand and impurity removal;
fifthly, the crushed materials are subjected to anaerobic composting reaction, so that the waste organic matters are converted into fertilizers through the fermentation action of microorganisms under certain moisture, C/N and ventilation conditions.
Preferably, in the first step, a disinfection pipe network communicated with an ozone generator is arranged in the bin, and the disinfection pipe network is in full contact with kitchen garbage, so that harmful bacteria such as escherichia coli in the garbage are inhibited or killed, and the bacterial infection risk of operators is increased.
Preferably, in the second step, the double-helix conveyor adopts a hydraulic power system, and when the material is blocked, the double-helix conveyor automatically rotates in the reverse direction and gives an alarm to prompt so as to prevent the material from being blocked.
Preferably, in the second step, the crushing knife used by the crusher is made of high alloy steel materials, so that the impact resistance is improved.
Preferably, in the fourth step, the screw extrusion dehydration unit adopts two dehydration processes, so that the dehydration rate of the kitchen waste is more than 80%.
Preferably, in the fifth step, the anaerobic composting reaction removes 40-60% of organic matters in the material, reduces harmful germs, improves the dehydration stability of the material, reduces the subsequent 35% of treatment energy consumption, and converts the organic matters from an unstable state into stable humus substances.
Compared with the prior art, the invention provides a kitchen garbage anaerobic compost fermentation reduction treatment method, which has the following beneficial effects:
1. the kitchen waste decrement comprehensive treatment system mainly comprises four main treatment units: the kitchen waste is discharged and then enters a storage bin for pre-disinfection, an ozone generator is used for generating ozone for the pre-disinfection, ozone gas with a certain concentration passes through a disinfection pipe network arranged in the storage bin and is fully contacted with the waste, so that harmful bacteria such as escherichia coli and the like in the waste are inhibited or killed, the bacterial infection risk of operators is improved, the kitchen waste is continuously, hermetically and automatically operated, the environmental pollution caused by manual sorting is avoided, the labor cost is reduced, and the waste treatment efficiency is improved;
2. the disinfected garbage is conveyed to a crusher by a double-screw conveyor to be crushed, a leachate part enters a desanding unit, the kitchen garbage is unloaded and crushed and enters a magnetic separation unit to separate metal substances, sieved substances with the particle size smaller than 100mm are obtained after the kitchen garbage is sieved by a drum sieve, the sieved kitchen garbage enters a screw extrusion dehydration unit, squeezed solid residues enter a rear-section crushing treatment system, squeezed organic slurry enters a sewage treatment system after desanding and impurity removal, and the pumped organic slurry is pumped to the sewage treatment system.
The equipment related to the invention is the existing equipment which can be directly purchased in the market, and the functions required by crushing, sorting and the like can be realized. The method of the invention can be carried out by adopting the existing method in the field without any specific method for the process steps and process parameters which are not recorded.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a block diagram of the kitchen waste anaerobic composting fermentation reduction process provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a kitchen waste anaerobic composting fermentation reduction treatment method comprises the following steps:
firstly, discharging kitchen waste, then putting the discharged kitchen waste into a storage bin, and generating ozone by an ozone generator for pre-disinfection;
secondly, conveying the disinfected kitchen waste to a crusher by a double-screw conveyor for crushing treatment, and feeding a leachate part generated in the crushing process into a desanding unit;
thirdly, feeding the crushed kitchen waste into a magnetic separation unit, separating metal substances in the waste, and screening by a drum screen to obtain undersize matters smaller than 100 mm;
fourthly, the screened kitchen waste enters a screw extrusion dehydration unit, the squeezed solid slag enters a rear-section crushing treatment system, and the squeezed organic slurry enters a sewage treatment system after sand and impurity removal;
fifthly, the crushed materials are subjected to anaerobic composting reaction, so that the waste organic matters are converted into fertilizers through the fermentation action of microorganisms under certain moisture, C/N and ventilation conditions.
Furthermore, in the first step, the disinfection pipe network that is linked together with ozone generator has been arranged in the feed bin, and ozone generator produces the ozone gas of certain concentration, goes out through the disinfection pipe network homodisperse in the feed bin for the disinfection pipe network fully contacts with rubbish from cooking, and harmful bacterium such as escherichia coli in the rubbish obtains inhibiting or killing, improves operating personnel's bacterial infection risk, ensures operating personnel's health and safety.
Furthermore, in the second step, the double-screw conveyor adopts a hydraulic power system, when the phenomenon of material blockage occurs, the double-screw conveyor automatically rotates in the reverse direction and gives an alarm to prompt, so that the material blockage is prevented, and the problem that domestic food waste is easy to block is effectively solved.
It should be noted that, in the second step, the crushing knife used in the crusher is made of high alloy steel material, so that the impact resistance is improved, and meanwhile, the crushing capability can be ensured, and the materials are fully crushed.
It is worth noting that in the fourth step, the screw extrusion dehydration unit adopts two dehydration processes, so that the dehydration rate of the kitchen waste is more than 80%, the screw extrusion dehydration unit can be widely applied to dehydration operation before the high-humidity residue material is dried, moisture which is not less than 80% of the material can be removed, and the dehydrated material can directly enter a lower-stage treatment system.
It is to be understood that in the fifth step, the anaerobic composting reaction removes 40% -60% of the organic matters in the materials, reduces harmful germs, improves the dehydration stability of the materials, reduces the subsequent 35% of the treatment energy consumption, converts the organic matters from an unstable state into stable humus substances, and the compost products do not contain pathogens after the composting process, are odorless and fly-free, can be safely treated and stored, and are good soil conditioners and organic fertilizers.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A kitchen waste anaerobic composting fermentation reduction treatment method is characterized by comprising the following steps: the method comprises the following steps:
firstly, discharging kitchen waste, then putting the discharged kitchen waste into a storage bin, and generating ozone by an ozone generator for pre-disinfection;
secondly, conveying the disinfected kitchen waste to a crusher by a double-screw conveyor for crushing treatment, and feeding a leachate part generated in the crushing process into a desanding unit;
thirdly, feeding the crushed kitchen waste into a magnetic separation unit, separating metal substances in the waste, and screening by a drum screen to obtain undersize matters smaller than 100 mm;
fourthly, the screened kitchen waste enters a screw extrusion dehydration unit, the squeezed solid slag enters a rear-section crushing treatment system, and the squeezed organic slurry enters a sewage treatment system after sand and impurity removal;
fifthly, the crushed materials are subjected to anaerobic composting reaction, so that the waste organic matters are converted into fertilizers through the fermentation action of microorganisms under certain moisture, C/N and ventilation conditions.
2. The kitchen waste anaerobic compost fermentation and reduction treatment method according to claim 1, characterized in that: in the first step, a disinfection pipe network communicated with an ozone generator is arranged in the bin, and the disinfection pipe network is in full contact with kitchen garbage, so that harmful bacteria such as escherichia coli in the garbage are inhibited or killed, and the bacterial infection risk of operators is improved.
3. The kitchen waste anaerobic compost fermentation and reduction treatment method according to claim 1, characterized in that: in the second step, the double-screw conveyor adopts a hydraulic power system, and when the phenomenon of material blockage occurs, the double-screw conveyor automatically rotates in the reverse direction and gives an alarm to prompt so as to prevent the material blockage.
4. The kitchen waste anaerobic compost fermentation and reduction treatment method according to claim 1, characterized in that: in the second step, the crushing cutter used by the crusher is made of high alloy steel materials, so that the impact resistance is improved.
5. The kitchen waste anaerobic compost fermentation and reduction treatment method according to claim 1, characterized in that: in the fourth step, the screw extrusion dehydration unit adopts two dehydration processes, so that the dehydration rate of the kitchen waste is more than 80%.
6. The kitchen waste anaerobic compost fermentation and reduction treatment method according to claim 1, characterized in that: in the fifth step, the anaerobic composting reaction removes 40-60% of organic matters in the materials, reduces harmful germs, improves the dehydration stability of the materials, reduces the subsequent 35% of treatment energy consumption, and converts the organic matters from an unstable state into stable humus substances.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011611492.XA CN112496013A (en) | 2020-12-30 | 2020-12-30 | Kitchen waste anaerobic composting fermentation reduction treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011611492.XA CN112496013A (en) | 2020-12-30 | 2020-12-30 | Kitchen waste anaerobic composting fermentation reduction treatment method |
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| CN112496013A true CN112496013A (en) | 2021-03-16 |
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| CN202011611492.XA Pending CN112496013A (en) | 2020-12-30 | 2020-12-30 | Kitchen waste anaerobic composting fermentation reduction treatment method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644438A (en) * | 2022-03-31 | 2022-06-21 | 浙江科力尔环保设备股份有限公司 | Vertical sludge concentration device |
| CN114835527A (en) * | 2022-05-13 | 2022-08-02 | 湖北笃冉生态农业科技有限公司 | Soil remediation type organic fertilizer and preparation method thereof |
| CN114835516A (en) * | 2022-05-18 | 2022-08-02 | 苏州华益洁环境能源技术有限公司 | Biogas slurry anaerobic fermentation treatment process |
| CN114918227A (en) * | 2022-05-25 | 2022-08-19 | 湖南仁和环保科技有限公司 | Anaerobic fermentation pretreatment system for kitchen garbage |
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| US6423532B1 (en) * | 1997-02-24 | 2002-07-23 | Linde Brv Biowaste Technologies Ag | Refuse-treatment method and apparatus |
| CN102527701A (en) * | 2012-01-06 | 2012-07-04 | 北京昊海天际科技有限公司 | Comprehensive treating system for domestic wastes |
| CN104307848A (en) * | 2014-09-29 | 2015-01-28 | 吴长江 | Kitchen waste treatment method |
| CN112077115A (en) * | 2020-08-21 | 2020-12-15 | 中国市政工程华北设计研究总院有限公司 | Kitchen waste extrusion screening pretreatment and dry/wet anaerobic fermentation treatment process system |
-
2020
- 2020-12-30 CN CN202011611492.XA patent/CN112496013A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6423532B1 (en) * | 1997-02-24 | 2002-07-23 | Linde Brv Biowaste Technologies Ag | Refuse-treatment method and apparatus |
| CN102527701A (en) * | 2012-01-06 | 2012-07-04 | 北京昊海天际科技有限公司 | Comprehensive treating system for domestic wastes |
| CN104307848A (en) * | 2014-09-29 | 2015-01-28 | 吴长江 | Kitchen waste treatment method |
| CN112077115A (en) * | 2020-08-21 | 2020-12-15 | 中国市政工程华北设计研究总院有限公司 | Kitchen waste extrusion screening pretreatment and dry/wet anaerobic fermentation treatment process system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644438A (en) * | 2022-03-31 | 2022-06-21 | 浙江科力尔环保设备股份有限公司 | Vertical sludge concentration device |
| CN114835527A (en) * | 2022-05-13 | 2022-08-02 | 湖北笃冉生态农业科技有限公司 | Soil remediation type organic fertilizer and preparation method thereof |
| CN114835516A (en) * | 2022-05-18 | 2022-08-02 | 苏州华益洁环境能源技术有限公司 | Biogas slurry anaerobic fermentation treatment process |
| CN114918227A (en) * | 2022-05-25 | 2022-08-19 | 湖南仁和环保科技有限公司 | Anaerobic fermentation pretreatment system for kitchen garbage |
| CN114918227B (en) * | 2022-05-25 | 2023-08-04 | 湖南仁和环保科技有限公司 | Anaerobic fermentation pretreatment system for kitchen waste |
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Inventor after: Xu Shaowei Inventor after: Shi Jiren Inventor after: Liu Bingbing Inventor before: Xu Shaowei Inventor before: Shi Jiren Inventor before: Liu Bingbing |
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Application publication date: 20210316 |