CN113305135A - Kitchen waste biological treatment system - Google Patents
Kitchen waste biological treatment system Download PDFInfo
- Publication number
- CN113305135A CN113305135A CN202110682052.1A CN202110682052A CN113305135A CN 113305135 A CN113305135 A CN 113305135A CN 202110682052 A CN202110682052 A CN 202110682052A CN 113305135 A CN113305135 A CN 113305135A
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- China
- Prior art keywords
- kitchen waste
- biological treatment
- oil
- water
- stirring
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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
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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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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
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- 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
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention relates to the technical field of kitchen waste treatment, in particular to a kitchen waste biological treatment system; the device comprises a discharging chamber, a buffer pool, a solid material conveyor, a sorting chamber, a pulverizer, biological treatment equipment and fertilizer recovery equipment which are sequentially arranged, wherein an oil-water separator is also arranged below the buffer pool, the oil-water separator is also connected with a waste oil tank, the buffer pool comprises a solid-liquid separation tank and a liquid storage tank which are vertically arranged, the liquid storage tank is connected with the oil-water separator, and the oil-water separator is connected with sewage treatment equipment; the invention not only crushes the kitchen waste, but also classifies the kitchen waste into solid and liquid, thereby creating conditions for subsequent processing and overcoming the key problems of rotting and smelling in the kitchen waste treatment.
Description
Technical Field
The invention relates to the technical field of kitchen waste treatment, in particular to a kitchen waste biological treatment system.
Background
Kitchen waste, commonly known as swill, also known as swill and hogwash, is a domestic waste formed in the process of domestic consumption by residents, is extremely easy to rot and deteriorate, emits foul smell, and spreads bacteria and viruses. The main components of the kitchen waste comprise rice and flour food residues, vegetables, animal and vegetable oil, meat and bones and the like, and the kitchen waste comprises starch, cellulose, protein, lipid and inorganic salt in terms of chemical composition. The chemical composition of the starch, cellulose, protein, lipid, inorganic salt and the like is characterized as follows: 1. the content of organic matters such as crude protein, crude fiber and the like is high, the development and utilization value is high, but the organic matters are easy to decay and generate odor; 2. the water content is high, the collection and transportation are inconvenient, and secondary pollution is easy to generate due to improper treatment; 3. the content of oil and salt substances is higher than that of other household garbage, the quality of the resource products is greatly influenced, and the treatment cost is high, so that the treatment and the development of kitchen waste become problems to be solved urgently.
At present, common large-scale treatment methods comprise incineration, composting and the like; however, the methods all face the problems of large occupied area, high long-distance transportation cost, low efficiency, low resource utilization degree and the like. So that most cities in China cannot effectively treat the kitchen waste; even some illegal activities occur, such as: the kitchen waste is automatically recovered and used for feeding livestock and poultry or manufacturing the 'swill-cooked dirty oil'.
At present, the kitchen waste treatment is still in a pilot stage nationwide, as a new industry, no very mature project and process technology can be used for reference nationwide, solutions can be found everywhere according to local conditions, and experience is continuously accumulated and gradually improved in practice. Along with the increase of the collection and treatment amount of the kitchen waste in the transportation process, the problems of treatment process, pretreatment equipment, waste gas treatment and kitchen waste water treatment are increasingly highlighted.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a biological treatment system for kitchen waste.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a kitchen garbage biological treatment system, is including unloading room, buffer pool, solid material conveyer, separation chamber, rubbing crusher, biological treatment equipment and the fertilizer recovery plant that sets gradually, the buffer pool below still is provided with oil water separator, oil water separator still is connected with the waste oil tank, the buffer pool includes solid-liquid separation groove and the reservoir of arranging from top to bottom, the reservoir is connected with oil water separator, oil water separator is connected with sewage treatment equipment.
Further, be provided with the push rod that promotes through pushing mechanism in the solid-liquid separation inslot, be provided with the push pedal on the push rod, select separately the indoor sorting belt feeder that is equipped with of room, the feed end that should select separately the belt feeder corresponds the setting with the discharge end of solid material conveyer, and the discharge end that should select separately the belt feeder is close to the rubbing crusher, the drive belt top of selecting separately the belt feeder is equipped with selects separately magnet.
Further, the biological treatment equipment comprises a horizontal cylindrical stirring drum and a stirring rod which is arranged in the stirring drum and driven to rotate by a driving structure, the stirring rod penetrates through the barrel of the stirring drum and is fixedly connected with a plough-head type stirring knife by a bolt, and a water outlet is formed below the stirring drum.
In the invention, the aerobic reaction of the kitchen waste in the biological treatment equipment comprises the following steps:
1) adding water into the biological treatment equipment, uniformly stirring by adopting a stirring knife, performing water washing desalination treatment, and diluting and desalinating the salt in the crushed kitchen waste;
2) discharging a water outlet of the kitchen waste subjected to the water washing and desalting treatment, and then sequentially adding corn straws and bacillus subtilis into the kitchen waste for aerobic digestion to obtain the organic fertilizer.
In the step 2), firstly adding corn straws into the kitchen waste, wherein the corn straws and the kitchen waste are added according to the proportion of 1: 3 until the carbon nitrogen ratio is as follows: 28: 1, the carbon-phosphorus ratio is: 120: 1, obtaining compost raw materials with the water content of 55 percent; then adding bacillus subtilis into the compost raw material according to 0.6% of the mass of the compost raw material, stirring and mixing the mixture uniformly by adopting a stirring knife, then carrying out high-temperature aerobic composting to obtain an organic fertilizer, and recycling the organic fertilizer by using fertilizer recycling equipment.
Further, the oil-water separator performs oil-water separation on the kitchen liquid phase in the liquid storage tank to extract liquid grease in the kitchen waste, the liquid grease is used as a biodiesel raw material or an industrial grease raw material, and the separated water is treated by sewage treatment equipment and then is discharged or recycled.
Further, high-temperature water vapor sterilization treatment is carried out on solid kitchen waste obtained after oil-water separation of the kitchen waste for 15min to obtain kitchen waste treatment substances, and then the kitchen waste treatment substances are conveyed to a separation chamber by a solid material conveyor.
Compared with the prior art, the invention has the beneficial effects that:
1. the kitchen waste is not only crushed, but also subjected to solid-liquid classification, so that conditions are created for subsequent processing, and the key problems of rotting and smelling in the kitchen waste treatment are solved;
2. according to the invention, the kitchen waste is pretreated to greatly reduce the contents of salt, grease and water in the kitchen waste, and then the kitchen waste is mixed with the corn straws in proportion, so that the defect of low C/N in the kitchen waste raw material is made up, and the content of nutrient substances in the kitchen waste is improved;
3. the kitchen waste is pretreated to reduce the salt content and the moisture content, and the organic fertilizer prepared by the method has high organic matter content, low salt content and other impurity content, and high content of nutrient substances such as nitrogen, phosphorus and the like;
4. the system designed by the invention not only provides a convenient and effective kitchen waste treatment method, but also changes waste into valuable, and has remarkable advantages compared with the existing kitchen waste biological treatment equipment, and has huge market potential.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
FIG. 1 is a schematic structural diagram of a kitchen waste biological treatment system according to the present invention;
FIG. 2 is a schematic view of the structure of the stirring rod and the plowshare type stirring knife of the present 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 and 2, the invention provides a kitchen waste biological treatment system, which adopts the following equipment: comprises a discharging chamber 1, a buffer pool 2, a solid material conveyor 3, a sorting chamber 4, a crusher 5, a biological treatment device 6 and a fertilizer recovery device 7 which are arranged in sequence, an oil-water separator 8 is arranged below the buffer pool, the oil-water separator 8 is also connected with a waste oil tank 9, the buffer tank comprises a solid-liquid separation tank 21 and a liquid storage tank 22 which are arranged up and down, the liquid storage tank 22 is connected with the oil-water separator 8, the oil-water separator 8 is connected with a sewage treatment device 10, the sewage treatment device 10 treats the water separated by the oil-water separator and then discharges the water, so as to avoid environmental pollution, the original raw materials of the kitchen waste are buffered by a conveying channel from the discharging chamber 1, the kitchen waste enters a solid-liquid separation tank which is obliquely arranged, so that the solid and the liquid are conveniently separated, and the biological treatment equipment performs aerobic reaction on the kitchen waste.
The kitchen waste separation device is characterized in that a push rod 23 pushed by a pushing mechanism is arranged in the solid-liquid separation tank 2, a push plate 24 is arranged on the push rod 23, kitchen waste enters the solid-liquid separation tank 2, the push rod 23 and the push plate 24 push the inclined solid-liquid separation tank from bottom to top, the kitchen waste is easier to separate liquid under the extrusion of a pushing force, the separated liquid-phase waste enters a liquid storage tank below the solid-liquid separation tank, a separation belt conveyor is arranged in the separation chamber, the feeding end of the separation belt conveyor corresponds to the discharging end of the solid material conveyor, the discharging end of the separation belt conveyor is close to the crusher, separation magnets are arranged above a driving belt of the separation belt conveyor, and the kitchen waste subjected to solid-liquid separation firstly sucks away metal waste through the separation magnets to avoid the metal waste from entering the crusher to influence the crushing effect of the kitchen waste.
Biological treatment equipment 6 is including being horizontal cylindric churn 61 and setting up in churn 61 and through drive structure drive pivoted puddler 62, puddler 62 runs through churn 61 barrel and through bolt fixedly connected with ploughshare type churn knife 63, and the churn below is provided with outlet 64, needs carry out aerobic reaction to kitchen garbage in the biological treatment equipment, consequently sets up puddler and ploughshare type churn knife and can carry out even stirring to kitchen garbage, lets kitchen garbage react more fully.
In the aspect of aerobic reaction, the method comprises the following steps:
1) adding water into biological treatment equipment, uniformly stirring by adopting a stirring knife, performing water washing desalination treatment, diluting and desalinating salt in the crushed kitchen waste, wherein the salt content is low and the impurities are less, and the salt content is only 41.3% of that of the common method.
2) Discharging a water outlet of the kitchen waste subjected to the water washing and desalting treatment, and then sequentially adding corn straws and bacillus subtilis into the kitchen waste for aerobic digestion to obtain the organic fertilizer. The organic fertilizer product obtained by the method reaches or exceeds the relevant standard.
In the step 2), firstly adding corn straws into the kitchen waste, wherein the corn straws and the kitchen waste are added according to the proportion of 1: 3 until the carbon nitrogen ratio is as follows: 28: 1, the carbon-phosphorus ratio is: 120: 1, obtaining compost raw materials with the water content of 55 percent; then adding bacillus subtilis into the compost raw material according to 0.6% of the mass of the compost raw material, stirring and mixing the mixture uniformly by adopting a stirring knife, then carrying out high-temperature aerobic composting to obtain an organic fertilizer, and recycling the organic fertilizer by using fertilizer recycling equipment. In the aerobic composting process, microorganisms are not specially inoculated, bacteria, actinomycetes and fungi carried by the kitchen waste and in the environment are adopted for aerobic culture, reproduction and metabolism, and organic matters in the kitchen waste are improved. The organic fertilizer obtained by aerobic reaction of bacillus subtilis has better effect on preventing and treating diseases of crops such as rice, wheat, peanut, tomato, pepper, soybean, corn and the like, particularly has better effect on preventing and treating diseases such as wheat powdery mildew, gibberellic disease, banded sclerotial blight and the like, and the field yield is increased by 10-50%.
In the aspect of kitchen waste oil-water treatment, an oil-water separator is used for carrying out oil-water separation on kitchen liquid phase in a liquid storage tank to extract liquid grease in the kitchen waste, the liquid grease is used as a biodiesel raw material or an industrial grease raw material, and separated water is discharged or recycled after being treated by sewage treatment equipment.
The solid kitchen waste obtained after oil-water separation of the kitchen waste is subjected to high-temperature steam sterilization treatment for 15min to obtain a kitchen waste treatment object, and then is conveyed to a separation chamber by a solid material conveyor.
The kitchen waste treatment device is combined with the biological treatment system to treat the kitchen waste twice, so that the kitchen waste treatment effect is better. Adopt kitchen garbage processing apparatus not only to carry out shredding to kitchen garbage, carried out solid, liquid classification to kitchen garbage moreover for kitchen garbage handles the physics and chemistry degree height in a set, the management of being convenient for. The biological treatment system has small occupied area, is suitable for various occasions, and is beneficial to environmental protection.
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 (7)
1. The utility model provides a kitchen garbage biological treatment system which characterized in that: including unloading room, buffer pool, solid material conveyer, sorting chamber, rubbing crusher, biological treatment equipment and the fertilizer recovery plant that sets gradually, the buffer pool below still is provided with oil water separator, oil water separator still is connected with the waste oil tank, the buffer pool includes solid-liquid separation groove and the reservoir of arranging from top to bottom, the reservoir is connected with oil water separator, oil water separator is connected with sewage treatment equipment.
2. The biological treatment system for kitchen waste according to claim 1, characterized in that: the solid-liquid separation inslot is provided with the push rod that promotes through pushing mechanism, is provided with the push pedal on the push rod, select separately the indoor sorting belt feeder that is equipped with, the feed end that should select separately the belt feeder corresponds the setting with the discharge end of solid material conveyer, and the discharge end that should select separately the belt feeder is close to the rubbing crusher, the drive belt top of selecting separately the belt feeder is equipped with selects separately magnet.
3. The biological treatment system for kitchen waste according to claim 1, characterized in that: the biological treatment equipment comprises a horizontal cylindrical stirring drum and a stirring rod which is arranged in the stirring drum and driven to rotate by a driving structure, the stirring rod penetrates through the barrel of the stirring drum and is fixedly connected with a plough-head type stirring knife by a bolt, and a water outlet is arranged below the stirring drum.
4. The kitchen waste biological treatment system according to claim 3, characterized in that: the method is characterized in that the kitchen waste in the biological treatment equipment is subjected to aerobic reaction and comprises the following steps:
1) adding water into the biological treatment equipment, uniformly stirring by adopting a stirring knife, performing water washing desalination treatment, and diluting and desalinating the salt in the crushed kitchen waste;
2) discharging a water outlet of the kitchen waste subjected to the water washing and desalting treatment, and then sequentially adding corn straws and bacillus subtilis into the kitchen waste for aerobic digestion to obtain the organic fertilizer.
5. The kitchen waste biological treatment system according to claim 4, characterized in that: in the step 2), firstly adding corn straws into the kitchen waste, wherein the corn straws and the kitchen waste are added according to the proportion of 1: 3 until the carbon nitrogen ratio is as follows: 28: 1, the carbon-phosphorus ratio is: 120: 1, obtaining compost raw materials with the water content of 55 percent; then adding bacillus subtilis into the compost raw material according to 0.6% of the mass of the compost raw material, stirring and mixing the mixture uniformly by adopting a stirring knife, then carrying out high-temperature aerobic composting to obtain an organic fertilizer, and recycling the organic fertilizer by using fertilizer recycling equipment.
6. The biological treatment system for kitchen waste according to claim 1, characterized in that: the oil-water separator is used for carrying out oil-water separation on the kitchen liquid phase in the liquid storage tank, extracting liquid grease in the kitchen waste and using the liquid grease for biodiesel raw materials or industrial grease raw materials, and the separated water is discharged or recycled after being treated by sewage treatment equipment.
7. The kitchen waste biological treatment system according to claim 6, characterized in that: the solid kitchen waste obtained after oil-water separation of the kitchen waste is subjected to high-temperature steam sterilization treatment for 15min to obtain a kitchen waste treatment object, and then is conveyed to a separation chamber by a solid material conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110682052.1A CN113305135A (en) | 2021-06-19 | 2021-06-19 | Kitchen waste biological treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110682052.1A CN113305135A (en) | 2021-06-19 | 2021-06-19 | Kitchen waste biological treatment system |
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| Publication Number | Publication Date |
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| CN113305135A true CN113305135A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110682052.1A Pending CN113305135A (en) | 2021-06-19 | 2021-06-19 | Kitchen waste biological treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276173A (en) * | 2022-01-24 | 2022-04-05 | 河北环境工程学院 | Method and equipment for preparing fertilizer from kitchen waste |
-
2021
- 2021-06-19 CN CN202110682052.1A patent/CN113305135A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276173A (en) * | 2022-01-24 | 2022-04-05 | 河北环境工程学院 | Method and equipment for preparing fertilizer from kitchen waste |
| CN114276173B (en) * | 2022-01-24 | 2022-12-06 | 河北环境工程学院 | Method and equipment for preparing fertilizer from kitchen waste |
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