Preparation method of oil-absorbing moisture-absorbing antiskid sawdust applied to kitchen waste machine

Abstract

The invention provides a preparation method of oil-absorbing moisture-absorbing anti-skid sawdust applied to a kitchen waste machine, which comprises the following steps: crushing wood in a crusher to obtain sawdust, drying the sawdust in a dryer at low temperature to obtain dried sawdust, cooling the dried sawdust, putting the cooled sawdust in a stirrer, adding compound bacterial sludge, and stirring to obtain the oil-absorbing moisture-absorbing anti-skid sawdust. And starting the stirrer to fully mix the sawdust and the composite bacterial sludge to obtain the composite sawdust. Firstly, the prepared composite sawdust is put into a kitchen waste machine, then the kitchen waste is put into the kitchen waste machine, the kitchen waste machine is started for crushing, sewage and oil water seeping in the crushing process are absorbed by the composite sawdust, the sewage and the oil water are decomposed and degraded by the composite bacterial sludge in the composite sawdust, the situation that the environment is polluted when the kitchen waste serves as waste is prevented, and the environmental protection performance is improved.

Description

Technical Field

[0001] This invention belongs to the field of waste treatment technology, specifically relating to a method for preparing oil-absorbing, moisture-absorbing, and non-slip sawdust for use in a food waste disposer. Background Technology

[0002] Food waste is a significant component of urban household waste, accounting for 40-60% of the total. It is high in salt and oil, produced in large quantities and scattered across different locations. Composed primarily of starch, dietary fiber, protein, and oil, food waste is highly susceptible to putrefaction, becoming sour and foul-smelling, and breeding harmful organisms. Current technologies, lacking adequate treatment facilities, often involve either mixing food waste with other waste and sending it to landfills, but this method is difficult due to site selection challenges—considering topography, geological conditions, and preventing surface and groundwater pollution, and requiring locations far from urban areas, resulting in long transportation distances; composting, but heavy metals may contaminate groundwater with compost products, making it difficult to establish a stable compost market; or incineration, which requires significant investment, has specific calorific value requirements for the waste, and may become a new source of atmospheric pollution, causing the loss of some valuable components.

[0003] Existing food waste disposers bleed out a lot of wastewater and oil after crushing food waste, which can easily pollute the environment and cannot be used directly as fertilizer, making them very environmentally unfriendly. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing oil-absorbing, moisture-absorbing, and non-slip sawdust for use in a food waste disposer, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in a kitchen waste disposer, wherein wood is placed in a pulverizer for pulverization to obtain sawdust, the sawdust is placed in a dryer for low-temperature drying to obtain dried sawdust, the dried sawdust is subjected to a cooling treatment, the cooled sawdust is placed in a mixer, and a compound bacterial mud is added, and the mixer is started to fully mix the sawdust and the compound bacterial mud to obtain compound sawdust.

[0006] Preferably, the wood is mahogany.

[0007] Preferably, the redwood is 5 years or older.

[0008] Preferably, the temperature for the low-temperature drying is 50℃-70℃.

[0009] Preferably, the temperature of the dried sawdust after cooling is 25℃-30℃.

[0010] Preferably, the sawdust is crushed to a size of 0.1mm-0.5mm.

[0011] Preferably, the microbial community of the compound microbial mud is Bacillus licheniformis agent, Aspergillus niger agent, Bacillus subtilis agent, Saccharomyces cerevisiae agent, and Pseudomonas cepacia agent.

[0012] Preferably, the mass ratio of the composite sawdust to the composite bacterial mud is 20:1.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] First, the composite sawdust prepared according to this invention is put into the food waste disposer, then the kitchen waste is added, and the food waste disposer is started to crush it. During the crushing process, the sewage and oil seeping out are absorbed by the composite sawdust, and the composite bacteria mud in the composite sawdust decomposes and degrades the sewage and oil, preventing the kitchen waste from polluting the environment when it is used as waste material and improving the environmental protection performance.

[0015] The invented composite microbial sludge can accelerate the decomposition and transformation of organic matter, generating nutrient-rich humus that can be directly used for soil improvement. This method is simple to operate, low in cost, and achieves efficient resource utilization of kitchen waste, solving the environmental pollution problems of traditional treatment methods. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1:

[0019] like Figure 1 As shown, a method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in a kitchen waste disposer involves: crushing wood in a pulverizer to obtain sawdust; drying the sawdust in a dryer at a low temperature to obtain dried sawdust; cooling the dried sawdust; placing the cooled sawdust in a mixer and adding compound microbial slurry; and mixing the sawdust and compound microbial slurry thoroughly to obtain composite sawdust. The wood used is redwood, with trees over 5 years old. The low-temperature drying temperature is 50℃-70℃. The temperature of the dried sawdust after cooling is 25℃-30℃. The sawdust is broken into pieces with a particle size of 0.1mm-0.5mm. The microbial community in the compound microbial slurry consists of Bacillus licheniformis, Aspergillus niger, Bacillus subtilis, Saccharomyces cerevisiae, and Pseudomonas cepacia. The mass ratio of composite sawdust to composite microbial slurry is 20:1.

[0020] Through the above technical solution, the composite sawdust prepared by the present invention is first put into the kitchen waste machine, then the kitchen waste is put in, and the kitchen waste machine is started to crush it. During the crushing process, the sewage and oil seepage are absorbed by the composite sawdust, and the composite bacteria mud in the composite sawdust decomposes and degrades the sewage and oil, preventing kitchen waste from polluting the environment when it is used as waste material and improving environmental protection performance.

[0021] The invented composite microbial sludge can accelerate the decomposition and transformation of organic matter, generating nutrient-rich humus that can be directly used for soil improvement. This method is simple to operate, low in cost, and achieves efficient resource utilization of kitchen waste, solving the environmental pollution problems of traditional treatment methods.

[0022] Example 2:

[0023] like Figure 1 As shown, this invention provides a method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in food waste disposers. First, suitable wood raw materials are selected and processed in an industrial pulverizer. The pulverizer speed is set to 3000-5000 rpm, and the pulverizing time is 30-50 minutes, yielding sawdust particles with a particle size between 0.1-0.5 mm. Next, the pulverized sawdust is transferred to a low-temperature drying device. The drying temperature is controlled at approximately 60℃ for 4 hours to ensure the sawdust moisture content drops below 5%. After drying, the sawdust is allowed to cool naturally at room temperature for 2 hours. The cooled sawdust is then transferred to a large industrial mixer, along with pre-prepared composite microbial slurry. The ratio of sawdust to composite microbial slurry is 20:1 (by weight). The mixer is started and stirred at 150 rpm for 15 minutes to ensure thorough and uniform mixing of the sawdust and composite microbial slurry. The final product is composite sawdust. The prepared composite sawdust is sealed in a plastic bag and stored in a cool, dark place. When using, pour an appropriate amount of composite sawdust into the food waste disposer and process it together with the kitchen waste. The composite sawdust absorbs excess moisture and grease generated during the operation of the food waste disposer, while the compound microbial community begins to decompose organic matter. After treatment, the volume of kitchen waste in the disposer is significantly reduced, and the odor is noticeably lowered. The treated mixture can be directly used as organic fertilizer or soil conditioner. This method not only improves the processing efficiency of the food waste disposer but also reduces the environmental pollution risks during kitchen waste treatment. Experimental tests show that kitchen waste treated with this composite sawdust has a volume reduction rate of 70% and an organic matter decomposition rate exceeding 80%. Compared to traditional methods, the application of this composite sawdust in the food waste disposer significantly improves the resource utilization efficiency of kitchen waste, providing a simple, efficient, and environmentally friendly solution for urban household waste treatment.

[0024] Implementation Three:

[0025] like Figure 1 As shown, the wood used in this invention is high-quality rosewood. First, the rosewood planks are cut into small pieces, such as 10 cm × 10 cm × 10 cm. These small pieces are then placed in a high-power industrial pulverizer, with the pulverizer speed set to 3500 rpm and the pulverizing time set to 45 minutes. After pulverization, rosewood sawdust with a particle size between 0.1 and 0.5 mm is obtained. Next, the pulverized rosewood sawdust is transferred to a low-temperature drying device for drying. The drying temperature is set at 55°C for 5 hours to thoroughly remove moisture from the sawdust, reducing its moisture content to below 3%. After drying, the rosewood sawdust is placed on a clean workbench and allowed to cool naturally at room temperature for 3 hours, gradually lowering its temperature to ambient temperature. The cooled rosewood sawdust is then carefully transferred to a large vertical mixer. Simultaneously, pre-prepared composite microbial mud is added to the mixer. The mixer is started and stirred at 150 rpm for 20 minutes to ensure thorough and uniform mixing of the rosewood sawdust and the composite microbial mud. The final composite redwood sawdust is dark brown, dry to the touch, and slightly elastic. The prepared composite redwood sawdust is packaged into well-sealed plastic containers, 500 grams per container, and labeled with the production date. To use, an appropriate amount of composite redwood sawdust is poured into a food waste disposer, and the disposer is started. The composite redwood sawdust quickly absorbs moisture and grease from the food waste, while the compound microbial community begins to decompose organic matter. After processing, the mixture in the disposer is loose and granular, with a significantly reduced odor. After simple screening, the processed mixture can be directly used as a substrate for horticulture or as a soil conditioner. Comparative experiments show that composite sawdust prepared using redwood has a 20% higher oil absorption capacity and a 15% higher moisture absorption capacity compared to ordinary wood, and also has better anti-slip properties. This improvement makes the food waste disposer perform better when processing high-grease, high-moisture food waste, not only increasing processing efficiency but also reducing safety risks during operation.

[0026] The redwood used in this invention is from trees aged 5 years or older. The composite sawdust prepared from redwood trees aged 8 years has improved oil absorption capacity, moisture absorption capacity, and anti-slip performance compared to redwood trees aged 5 years.

[0027] Example 4:

[0028] like Figure 1As shown, this invention provides a method for preparing oil-absorbing, moisture-absorbing, and non-slip sawdust for use in food waste disposers, wherein the low-temperature drying temperature is 50℃-70℃. In the specific implementation process, wood is first pulverized into sawdust, and then the sawdust is placed in a drying device for low-temperature drying. The drying device uses electric heating, and the temperature control system precisely adjusts the drying temperature within the range of 50℃-70℃. This temperature range effectively removes moisture from the sawdust while preventing excessive damage to its structure. The drying process lasts 2-3 hours, during which the sawdust is periodically stirred by a turning device to ensure uniform heating. A temperature sensor is installed inside the drying device to monitor the drying temperature in real time. If the temperature exceeds the set range, the control system automatically adjusts the heating power to maintain the temperature between 50℃ and 70℃. This temperature range not only effectively evaporates moisture from the sawdust but also maintains its porous structure and adsorption properties. During the low-temperature drying process, the moisture in the sawdust gradually evaporates without causing excessive decomposition or carbonization of organic matter such as lignocellulose and hemicellulose. After drying, the moisture content of the sawdust drops to below 5%, exhibiting excellent oil-absorbing and moisture-absorbing properties. This low-temperature drying method is more energy-efficient and environmentally friendly than high-temperature drying, while preserving the original structure and properties of the sawdust. The dried sawdust darkens slightly in color but retains its original wood grain and texture. Sawdust treated with this low-temperature drying process can better absorb and retain microorganisms when subsequently mixed with compound microbial slurry, improving the overall performance of the compound sawdust. Low-temperature drying also removes some volatile substances from the sawdust, reducing odor and making the final product more suitable for use in food waste disposers. Furthermore, the drying temperature of 50℃-70℃ can kill some harmful microorganisms in the sawdust, improving the product's hygiene and safety. Throughout the low-temperature drying process, the drying equipment consumes less energy, meeting environmental and energy-saving requirements. Sawdust treated with this low-temperature drying process has excellent oil and moisture absorption properties and anti-slip effects, effectively absorbing wastewater and oil generated during the food waste crushing process in the food waste disposer, laying a good foundation for subsequent mixing with compound microbial slurry.

[0029] Example 5:

[0030] like Figure 1As shown, in the method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in a food waste disposer, the temperature of the dried sawdust after cooling is 25℃-30℃. Specifically, the sawdust, after low-temperature drying, is first removed from the drying equipment and cooled. During cooling, the sawdust is evenly spread on multiple layers of screens to increase the contact area with cold air and improve cooling efficiency. A temperature sensor is installed inside the cooling device to monitor the sawdust temperature in real time. When the sawdust temperature drops below 30℃, the cooling system automatically adjusts the fan speed to maintain the cooling airflow, stabilizing the sawdust temperature within the 25℃-30℃ range. During this period, an automatic turning device periodically stirs the sawdust to ensure uniform cooling. Cooling to 25℃-30℃ aims to bring the sawdust to near room temperature, facilitating subsequent mixing with the compound microbial slurry. This temperature range is suitable for microbial growth and activity, preventing the inhibition or killing of beneficial microorganisms in the compound microbial slurry due to excessively high temperatures. Simultaneously, this temperature range also contributes to the stability of the internal structure of the sawdust, preventing structural stress caused by sudden temperature changes. The cooled sawdust remains loose, which facilitates thorough mixing with the compound bacterial slurry. This promotes rapid microbial reproduction and activity, improving the overall performance and effectiveness of the compound sawdust. Sawdust treated with this cooling process performs better in food waste disposers, effectively absorbing oil, moisture, and preventing slippage, thus effectively treating wastewater and oil from kitchen waste.

[0031] Example 6:

[0032] like Figure 1 As shown, in a method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in a food waste disposer according to the present invention, the sawdust is crushed to a size of 0.1mm-0.5mm. Specifically, the raw wood material is first fed into a crushing device for preliminary crushing. The crushing device employs a multi-stage crushing system, including three stages: coarse crushing, medium crushing, and fine crushing. The coarse crushing stage uses a large hammer crusher to break the wood into large pieces of sawdust. The medium crushing stage uses a high-speed rotating blade crusher to further crush the sawdust into smaller particles. The fine crushing stage uses a micro-crusher equipped with a specially designed grinding device to grind the sawdust particles to the required size range. Throughout the crushing process, the particle size distribution of the final product is controlled by adjusting the rotation speed and gap of each stage of the crushing equipment. The crushed sawdust is then processed through a precision screening system to ensure a uniform particle size distribution within the range of 0.1mm-0.5mm. The screening system includes multiple layers of vibrating screens to sequentially filter sawdust particles of different sizes. During screening, particles exceeding the particle size range are returned to the corresponding crushing stage for reprocessing to improve the yield. A particle size range of 0.1mm-0.5mm provides a larger specific surface area, enhancing the adsorption capacity of sawdust for liquids in kitchen waste.

[0033] Example 7:

[0034] like Figure 1As shown, this embodiment relates to a method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in food waste disposers, particularly regarding the microbial composition of the composite microbial slurry. In this method, wood is first pulverized to prepare sawdust, which is then subjected to low-temperature drying. The dried sawdust is cooled and then mixed with the composite microbial slurry. The microbial community of the composite microbial slurry consists of Bacillus licheniformis, Aspergillus niger, Bacillus subtilis, Saccharomyces cerevisiae, and Pseudomonas cepacia.

[0035] Bacillus licheniformis, Aspergillus niger, Bacillus subtilis, Saccharomyces cerevisiae, and Pseudomonas cepacia were all purchased from the China Industrial Microbial Culture Collection Center, with the following numbers: Bacillus licheniformis CICC10037; Aspergillus niger CICC2041; Bacillus subtilis CICC10027; Saccharomyces cerevisiae CICC1015; and Pseudomonas cepacia CICC20699, respectively.

[0036] In the preparation process, fresh wood is selected and processed into fine sawdust particles using mechanical crushing equipment. The sawdust is then placed in a low-temperature drying device to remove excess moisture. The dried sawdust is then allowed to cool naturally to room temperature. Next, the compound microbial slurry is prepared. This compound microbial slurry contains five microbial agents: Bacillus licheniformis, Aspergillus niger, Bacillus subtilis, Saccharomyces cerevisiae, and Pseudomonas cepacia, which are mixed to form the compound microbial slurry.

[0037] Bacillus licheniformis inoculants possess strong protein and fat-decomposing capabilities, effectively degrading animal-based organic matter in kitchen waste. Aspergillus niger inoculants are rich in various enzymes, capable of breaking down complex carbohydrates. Bacillus subtilis inoculants produce various antibacterial substances, inhibiting the growth of harmful microorganisms. Saccharomyces cerevisiae inoculants have excellent fermentation capabilities, accelerating the decomposition of organic matter. Pseudomonas cepacia inoculants have the ability to degrade cellulose, aiding in the decomposition of plant-based kitchen waste.

[0038] The prepared composite bacterial slurry is thoroughly mixed with the cooled sawdust, ensuring the slurry adheres evenly to the sawdust surface. During mixing, it is crucial to control the stirring speed and time to ensure full contact between the slurry and sawdust without damaging the sawdust structure. After mixing, the composite sawdust is placed in a cool, dry place to allow microorganisms to form a stable biofilm on the sawdust surface.

[0039] The prepared composite sawdust possesses excellent oil and moisture absorption properties, while also exhibiting microbial degradation capabilities. When processed together with kitchen waste in a food waste disposer, the composite sawdust absorbs the wastewater and oil generated during the crushing process, while the microorganisms in the composite microbial sludge decompose these absorbed substances, thereby reducing environmental pollution. Furthermore, the action of microorganisms accelerates the decomposition of organic matter, generating nutrient-rich humus that can be used for soil amendment.

[0040] Example 8:

[0041] like Figure 1 As shown in the figure, this embodiment describes a method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in a food waste disposer. In this method, wood is first crushed into sawdust, which is then dried at a low temperature. The dried sawdust is cooled and then mixed with a composite bacterial slurry. The mass ratio of the composite sawdust to the composite bacterial slurry is set at 20:1.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A method for preparing oil-absorbing, moisture-absorbing, and non-slip sawdust for use in a food waste disposer, characterized in that, Wood is crushed in a pulverizer to obtain sawdust. The sawdust is then dried in a dryer at a low temperature to obtain dried sawdust. The dried sawdust is then cooled. The cooled sawdust is then placed in a mixer, and compound bacterial mud is added. The mixer is started to fully mix the sawdust and compound bacterial mud to obtain compound sawdust.

2. The method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust in a food waste disposer according to claim 1, characterized in that, The wood in question is rosewood.

3. The method for preparing oil-absorbing, moisture-absorbing, and non-slip sawdust in a food waste disposer according to claim 2, characterized in that, The redwood mentioned is over 5 years old.

4. The method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust in a food waste disposer according to claim 1, characterized in that, The temperature for the low-temperature drying is 50℃-70℃.

5. The method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in a food waste disposer according to claim 1, characterized in that, The temperature of the dried sawdust after cooling is 25℃-30℃.

6. The method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust in a food waste disposer according to claim 1, characterized in that, The sawdust is broken into pieces with a size of 0.1mm-0.5mm.

7. The method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust for use in a food waste disposer according to claim 1, characterized in that, The microbial community in the compound microbial mud consists of Bacillus licheniformis, Aspergillus niger, Bacillus subtilis, Saccharomyces cerevisiae, and Pseudomonas cepacia.

8. The method for preparing oil-absorbing, moisture-absorbing, and anti-slip sawdust in a food waste disposer according to claim 1, characterized in that, The mass ratio of the composite sawdust to the composite bacterial mud is 20:1.

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