CN112387741A - Kitchen waste treatment process - Google Patents
Kitchen waste treatment process Download PDFInfo
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- CN112387741A CN112387741A CN201910760235.3A CN201910760235A CN112387741A CN 112387741 A CN112387741 A CN 112387741A CN 201910760235 A CN201910760235 A CN 201910760235A CN 112387741 A CN112387741 A CN 112387741A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
- B01D53/85—Biological processes with gas-solid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- 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
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- 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
Abstract
The application relates to the technical field of waste treatment, in particular to a kitchen waste treatment process. The kitchen discarded object is through doing wet classification back, carries out dry powderization through the fermentation machine after the wet rubbish material that will separate out is in proper order through preliminary treatment, letter sorting, smashing and dehydration and handles, wherein, the step of dry powderization processing includes: the dehydrated solid is sent into fermentation equipment, firstly, the solid is subjected to harmless treatment for 6 hours at the temperature of 120-150 ℃ and is continuously stirred; then controlling the temperature below 80 ℃, adding fermentation strains for fermentation for 10 hours; adding deodorizing strain for deodorizing, and drying and pulverizing the material after 5-8 hr for discharging. The fermentation process adopts high-temperature harmless treatment, then oxygen is supplied by a stirring mode, then fermentation and curing are carried out after fermentation strains are added, the whole fermentation process is compressed to within 24 hours, the requirement of daily production and daily cleanliness can be met, and odor generated in the fermentation process can be removed by adding deodorizing strains.
Description
Technical Field
The application relates to the technical field of waste treatment, in particular to a kitchen waste treatment process.
Background
Kitchen waste is a general term for food waste and kitchen waste. The food wastes refer to food residues of restaurants, unit canteens and the like and wastes of post-kitchen processing processes of fruits, vegetables, meat, grease, pastry and the like; the kitchen waste refers to perishable organic waste such as discarded fruit and vegetable and food leftovers, melon and fruit peels in daily life of a family. The kitchen waste is higher in water content, oil content and salt content than other waste, rich in nutrient elements such as nitrogen, phosphorus and potassium, rich in organic matters such as protein, starch, cellulose and fat, and high in bioenergy, but easy to decay and stink, in order to improve the utilization rate of classified resources, people change the organic matters in the kitchen waste into usable fertilizer, and particularly, organic waste such as kitchen waste, plants and domestic sludge is subjected to biological decomposition and decomposition through the activity of microorganisms in the nature, so that the organic waste is finally converted into organic fertilizer, finally enters the soil and is absorbed by the plants again, and the organic waste is converted and utilized.
However, the traditional or natural fermentation has many disadvantages and shortcomings, such as long fermentation time of organic fertilizer in nature, low fermentation efficiency and quality and a large amount of odor generated in the fermentation process.
Disclosure of Invention
In order to solve the above technical problem, the present application provides the following technical solutions.
The application provides a kitchen waste treatment process, kitchen waste carries out dry powdering through the fermentation machine after through wet classification futilely, in proper order through preliminary treatment, letter sorting, smashing and dehydration with the wet rubbish material of separating out and handles, wherein, dry step of pulverization processing includes:
the dehydrated solid is sent into fermentation equipment, firstly, the solid is subjected to harmless treatment for 6 hours at the temperature of 120-150 ℃ and is continuously stirred;
then controlling the temperature below 80 ℃, adding fermentation strains for fermentation for 10 hours;
adding deodorizing strain for deodorizing, and drying and pulverizing the material after 5-8 hr for discharging.
Further, the step of pre-processing comprises: and draining the wet garbage material, and adding a deodorizing strain to remove peculiar smell.
Further, the step of preprocessing further comprises: and crushing the wet garbage material into 5-10 cm of material.
Further, the sorting step includes: and (3) conveying the pretreated materials through a conveying belt, and sorting out textiles, metal and plastics in a manual inspection mode in the conveying process.
Further, the pulverizing step comprises: and crushing the sorted materials into 3-6mm fine materials.
Further, the dehydrating step includes: and (3) extruding and dehydrating the fine crushed materials to obtain semi-dry materials with the water content of less than 50%.
Further, the kitchen waste treatment process further comprises a water treatment step, wherein the water treatment step comprises:
collecting the wastewater generated in each stage, and separating out the grease after the grease floats upwards through purification and aeration;
and filtering and/or precipitating the water after the grease separation and then entering a sewage pipe network.
Further, the kitchen waste treatment process also comprises a waste gas treatment step, wherein the waste gas treatment step comprises: and collecting waste gas generated in each stage, and sequentially intercepting moisture, spraying and filtering, performing UV photolysis and active carbon filtering, and then discharging at high altitude.
Further, the kitchen waste treatment process also comprises a deodorization step, wherein the deodorization step comprises the following steps: and the odor generated in the process is conveyed to the biological deodorization filter for deodorization by adopting a negative pressure induced air and closed collection mode.
Further, an inorganic filter material is filled in the biological deodorization filter tank, and deodorization strains are attached to the inorganic filter material.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: in the fermentation process, high-temperature harmless treatment is adopted, fermentation strains are added, fermentation and curing are carried out, the whole fermentation process is compressed to within 24 hours, the requirement of daily production and daily cleanliness can be met, and odor generated in the fermentation process can be removed through adding deodorizing strains.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flow chart of a kitchen waste treatment process of the process provided in the embodiment of the present application;
fig. 2 is a flow chart of the steps of dry pulverization treatment in the kitchen waste treatment process of the process provided by the embodiment of the application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying drawings 1 and 2 in conjunction with an embodiment.
The embodiment of the application provides a kitchen waste treatment process. Kitchen waste includes, but is not limited to, vegetable heads, vegetable tails, leftovers, fruit peels, and green waste. As shown in fig. 1, after the kitchen waste is classified into dry and wet waste, the separated wet waste material is sequentially subjected to pretreatment, sorting, crushing and dehydration, and then is subjected to dry pulverization treatment by a fermentation machine, wherein the dry pulverization treatment comprises the following steps as shown in fig. 2: the dehydrated solid is sent into fermentation equipment, firstly, the solid is subjected to harmless treatment for 6 hours at the temperature of 120-150 ℃ and is continuously stirred; then controlling the temperature below 80 ℃, adding fermentation strains for fermentation for 10 hours; adding deodorizing strain for deodorizing, and drying and pulverizing the material after 5-8 hr for discharging. The embodiment can compress the whole fermentation process within 24 hours, can meet the requirement of daily production and daily cleanness, and can remove the odor generated in the fermentation process by adding the deodorant strain.
The core process of the embodiment is the addition and dry pulverization treatment of fermentation strains. After dehydration, the water content of the solid matter can be lower than 50%, the dehydrated material is firstly subjected to high-temperature harmless treatment, then is subjected to medium-temperature fermentation below 80 ℃, and fermentation strains are added at the stage to assist fermentation and material fertilizer curing; and (3) after 10 hours, cooling, adding a deodorizing strain, and after 5-8 hours, drying and pulverizing the material, so that the material can be discharged. The temperature of the high-temperature harmless treatment is preferably 120 +/-5 ℃, the highest temperature is not more than 150 ℃, the high-temperature sterilization of harmful microorganisms such as pathogenic bacteria is ensured, the harmless treatment is realized, and the water content of the material is reduced to be below 18% by performing water evaporation at high temperature. The fermentation process is an aerobic fermentation principle, the wet garbage is rapidly fermented and decomposed by using microorganisms, and the conditions of temperature, humidity, oxygen and the like which are sufficient for microbial strains to rapidly propagate are required to be provided in the process. The fermentation strain (microorganism) is preferably a high-temperature resistant compound microorganism strain with strong natural life activity and multiplication capacity, and includes but is not limited to one or more of bacillus subtilis, white rot fungi, bacillus thuringiensis and bacillus mucilaginosus. The microbial decomposition has a wide application range, can decompose most natural organic matters, is suitable for kitchen waste with high moisture, grease and salt, can decompose toothpick, disposable chopsticks, waste paper, degradable disposable lunch boxes and the like which are mixed, can produce high-content biochemical humic acid, can be converted into high-efficiency biological organic fertilizer, can meet the requirement of high-added-value agricultural application, and has a wide market prospect.
In the kitchen waste treatment process provided in the above embodiment, the wet waste material is drained and a deodorizing bacterial species is added to remove the odor in the pretreatment step. The utility model discloses a deposit the case in advance, can fall into through the gravity of material behind the promotion with the material through hoist mechanism, the main function of deposit the case in advance is the waterlogging caused by excessive rainfall, carries out the first filtration through the mode of gravity dehydration promptly, gets rid of partly moisture, can make the material fully move through stirring or cylinder design, then supplementary filter screen carries out the waterlogging caused by excessive rainfall to set up the recoil device, prevent that the filter screen from blockking up in the waterlogging caused by excessive rainfall. The odor removal strain is added in the process, so that the problem of the odor in the early stage can be solved. In the pretreatment process, a coarse crushing device can be added as necessary according to the component characteristics of the organic garbage for primary coarse crushing, and the material is crushed into 5-10 cm.
In the kitchen waste treatment process provided by the above embodiment, the materials after pretreatment are transported by the conveyor belt in the sorting step, and textile, metal and plastic are sorted out in the transportation process by a manual inspection mode.
In the kitchen waste treatment process provided in the above embodiment, the sorted materials are crushed into 3-6mm fine crushed materials in the crushing step. This part technology structure can design at the tail end of letter sorting conveyer belt, and the material of carrying coming falls into the rubbing crusher through the promotion of conveyer belt through natural gravity, smashes the material into the material in small, broken bits through the rubbing crusher.
In the kitchen waste treatment process provided by the above embodiment, in the dehydration step, the semi-dry material with the water content of less than 50% is obtained from the fine crushed material obtained after crushing in a squeezing dehydration mode, so that the proper carbon-nitrogen ratio and good air permeability of the material are ensured, and the fermentation is facilitated. The method specifically comprises the steps of feeding the fine crushed materials into a spiral dehydrator, dehydrating the fine crushed materials through extrusion, and enabling the fine crushed materials to become semi-dry materials with the water content of below 50% and be used for fermentation.
Through the process provided by the embodiment, 20 tons of materials can be completely treated in 2-3 hours from the time of putting the materials into the process of dehydrating and semi-drying the materials, such as continuous operation. If 20 tons of material containing more than 70% water is naturally dried and evaporated, it will take a lot of time. Therefore, the mechanized treatment solves the dehydration process, and can completely meet the requirements of scale and efficiency.
Sewage is generated in the organic matter composting process, and the organic matter is properly treated to reach the environmental discharge standard. The kitchen waste treatment process provided by the embodiment of the application further comprises a water treatment step, and the water treatment step specifically comprises: collecting the wastewater generated in each stage, and separating out the grease after the grease floats upwards through purification and aeration; and filtering and/or precipitating the water after the grease separation and then entering a sewage pipe network. The utility model provides a water treatment step follows the unified principle of collecting in ground, according to the characteristics that water flows to low, establishes filter screen and water collecting vat in the bottom of each technology section, through pipeline or slot, and unified concentrating to the water tank deposits, the net is put, then through water treatment facilities oil-water separation, and sewage pipe network is discharged to the log raft that reaches standard.
Collecting tanks or ground tanks are designed in each process section, sewage seeped and drained in each process section, including flushing sewage, is uniformly concentrated in a special water tank, fine bubbles are generated through aeration treatment to drive grease molecules to float to the liquid surface, grease can be collected into a special oil drum in a mode of circulating scraping on the liquid surface, and separated grease can be recycled by a professional company to produce biodiesel or burn for power generation.
Solid residues in the sewage after the oil separation cannot be filtered by a screen because the solid residues are too finely crushed, and two methods are usually adopted for treatment, namely a cloth bag filtering device is adopted to collect the solid residues through a fine filtering cloth bag in a water flow mode; secondly, a clean placement method is adopted, a condensing agent is added if necessary, solid-liquid separation is carried out, the water body becomes clear, and the water body is discharged after reaching the standard. The part of the collected solid residues can be treated once when each shift is handed over or when several shifts are handed over due to small quantity, so that the technical and practical operation can be realized, and a small amount of solid-liquid substances precipitated in the water tank can be added into the dehydrated semi-dry materials for fermentation treatment.
The odor and waste gas generated in the garbage composting treatment mainly comprise ammonia, sulfide and the like, the concentration of odor and waste gas pollutants in garbage treatment places is generally higher, the odor and waste gas are directly discharged without being effectively treated, the environment is polluted to a great extent, and particularly the social influence is extremely bad. Therefore, the waste gas must be collected by a collecting pipeline and then treated by a purification system to reach the standard before being discharged at high altitude. Therefore, this application meal kitchen waste disposal process still includes the exhaust-gas treatment step, the exhaust-gas treatment step includes: and collecting waste gas generated in each stage, and sequentially intercepting moisture, spraying and filtering, performing UV photolysis and active carbon filtering, and then discharging at high altitude. Waste gas generated in the process of the application follows the principle of air uniform collection, and according to the characteristics of lighter gas and upward emission, waste gas collecting devices are uniformly distributed in the top space of each process section and are subjected to centralized post-treatment through pipelines. The sealing part of the process section adopts a pipeline, the semi-sealing part adopts top collection, the large space adopts modes of negative pressure air extraction and the like, and evacuation and air flow are mainly realized by a fan. During the treatment process, the moisture can be trapped by cooling steam after the waste gas passes through a spiral cooling tower; the spraying filtration can be realized by passing the waste gas through a spray tower, and a water spraying system is used for dedusting and deodorizing; UV photolysis can utilize high-energy ultraviolet beams and ozone to carry out a synergistic decomposition oxidation reaction on waste gas, so that odor substances are degraded and converted into low-molecular compounds, water and carbon dioxide; finally, part of the harmful gas can be adsorbed again by the activated carbon.
Specifically, to the foul smell that kitchen waste treatment technology appears, can also design the deodorization step alone and eliminate or reduce, the deodorization step is carried the foul smell that produces in the course of the technology to the biological deodorization filtering pond and is deodorized including the mode that adopts negative pressure induced air and airtight collection, the intussuseption of biological deodorization filtering pond is filled with inorganic filter material, it has the deodorization bacterial to adhere to on the inorganic filter material. In the process provided by the embodiment of the application, the source of the odor has three parts, namely the original odor of the garbage, the separated grease and the like, and the odor is generated in the fermentation process. The treatment mode also adopts unified collection, comprehensive modes such as sealing, semi-sealing and air draft are adopted in the three process stages, a negative pressure mode is adopted in a working space, air flows as much as possible, fresh air flows in, the original air is intensively sent into the biological deodorization filter tank through a pipeline, an inorganic filter material is filled in the biological deodorization filter tank, a biological membrane formed by adhesion of high-efficiency deodorization strains is arranged on the filter material, harmful substances such as ammonia gas and hydrogen sulfide in the malodorous gas are removed through metabolism of microorganisms, and the malodorous gas is discharged after reaching the standard after being subjected to biological deodorization treatment. On the other hand, a deodorant strain can be added to a working unit generating odor for deodorization, as shown in fig. 1, the deodorant strain can be added to the fermentation step, the wastewater treatment step and the waste gas treatment step after awakening, activating, diluting and dispersing, and targeted deodorization can be performed, and the specific adding mode can be a spray nozzle spraying mode. Specifically, odor sensors can be arranged at a plurality of working sections of the treatment process, data are collected through the odor sensors, and whether deodorization is carried out through the deodorization process or not can be determined according to the data collected by the odor sensors. The deodorizing bacterial species employed in the process of the present application include, but are not limited to, lactic acid bacteria, yeast, bacillus and metabolites thereof.
The corresponding arrangement and connection of the structures, the mutual timing and control parameters of the steps, which are not described in the present application, can be found in the similar devices and methods in the prior art, and the connection, operation and working principle of the structures, which are not described in detail herein, are known to those skilled in the art.
Some embodiments in this specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a kitchen waste treatment process, its characterized in that, kitchen waste carries out dry powdering through the fermentation machine after through wet classification futilely, with the wet rubbish material of separating out in proper order through preliminary treatment, letter sorting, smashing and dehydration, wherein, the step of dry powdering processing includes:
the dehydrated solid is sent into fermentation equipment, firstly, the solid is subjected to harmless treatment for 6 hours at the temperature of 120-150 ℃ and is continuously stirred;
then controlling the temperature below 80 ℃, adding fermentation strains for fermentation for 10 hours;
adding deodorizing strain for deodorizing, pulverizing after 5-8 hr, and discharging.
2. The kitchen waste treatment process according to claim 1, wherein the pretreatment step comprises: and draining the wet garbage material, and adding a deodorizing strain to remove peculiar smell.
3. The kitchen waste treatment process according to claim 2, wherein the step of pre-treating further comprises: and crushing the wet garbage material into 5-10 cm of material.
4. The kitchen waste treatment process according to claim 1, wherein the sorting step comprises: and (3) conveying the pretreated materials through a conveying belt, and sorting out textiles, metal and plastics in a manual inspection mode in the conveying process.
5. The kitchen waste treatment process according to claim 1, wherein the crushing step comprises: and crushing the sorted materials into 3-6mm fine materials.
6. The kitchen waste treatment process according to claim 1, wherein the dehydration step comprises: and (3) extruding and dehydrating the fine crushed materials to obtain semi-dry materials with the water content of less than 50%.
7. The kitchen waste treatment process according to claim 1, further comprising a water treatment step, wherein the water treatment step comprises:
collecting the wastewater generated in each stage, and separating out the grease after the grease floats upwards through purification and aeration;
and filtering and/or precipitating the water after the grease separation and then entering a sewage pipe network.
8. The kitchen waste treatment process according to claim 1, further comprising a waste gas treatment step, wherein the waste gas treatment step comprises: and collecting waste gas generated in each stage, and sequentially intercepting moisture, spraying and filtering, performing UV photolysis and active carbon filtering, and then discharging at high altitude.
9. The kitchen waste treatment process according to claim 1, further comprising a deodorization step, wherein the deodorization step comprises the steps of conveying odor generated in the process to a biological deodorization filter for deodorization by adopting a negative pressure induced air and closed collection mode.
10. The kitchen waste treatment process according to claim 9, wherein the biological deodorization filter is filled with an inorganic filter material, and the inorganic filter material is attached with deodorization bacteria.
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| CN201910760235.3A CN112387741A (en) | 2019-08-16 | 2019-08-16 | Kitchen waste treatment process |
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| CN201910760235.3A CN112387741A (en) | 2019-08-16 | 2019-08-16 | Kitchen waste treatment process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851411A (en) * | 2021-03-23 | 2021-05-28 | 绿硕生物科技(苏州)有限公司 | Kitchen waste harmless treatment method and application thereof |
| CN113996643A (en) * | 2021-09-29 | 2022-02-01 | 浙江大学 | Kitchen waste hydrothermal conversion rapid humification method |
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| CN113996643A (en) * | 2021-09-29 | 2022-02-01 | 浙江大学 | Kitchen waste hydrothermal conversion rapid humification method |
| CN113996643B (en) * | 2021-09-29 | 2022-08-12 | 浙江大学 | Kitchen waste hydrothermal conversion rapid humification method |
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