Preparation method and production system of green plant component based on multi-source solid waste

Abstract

The invention belongs to the technical field of solid waste co-processing, and discloses a preparation method of a green plant component based on multi-source solid waste, which comprises the following steps: providing waste fan blades and waste plastics, respectively crushing the waste fan blades and the waste plastics, mixing to form a mixture, and carrying out hot press molding on the mixture by using a mold to form a green body; a layer of cement mortar is attached to the surface of the green body, a component primary product is prepared, nutrient soil is injected into the component primary product, and the component for the green plants is prepared. By adopting the method disclosed by the invention, the cooperative treatment of the waste fan blades, the waste plastics, the construction wastes and the kitchen wastes can be realized, and the production cost of the components for the green plants can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of green plant facilities, and in particular to a preparation method and a production system of green plant components based on multi-source solid waste. Background Art

[0002] Faced with the severe situation of tightening resource constraints, serious environmental pollution and ecosystem degradation, we must establish the ecological civilization concept of respecting, adapting to and protecting nature, give priority to ecological civilization construction, integrate it into all aspects and the entire process of economic, political, cultural and social construction, and strive to build a beautiful China and achieve sustainable development of the Chinese nation.

[0003] The problem of global warming has made the requirements for green development increasingly prominent, and the call for green recovery is growing louder and louder. Low carbonization has become a new trend in global economic development after globalization and informatization. The circular economy has begun to evolve from a low-level single cycle characterized by waste recycling to a multi-level systematic cycle that establishes a self-circulating system for the entire region, showing a new trend of high-end development. Global cities have relied on ecological environment and cultural creativity, and ecological culture has become an important means for global cities to shape their competitive advantages. Increasing investment in environmental protection, energy conservation and emission reduction, and recycling infrastructure construction has become an important measure to promote economic recovery.

[0004] In the prior art, there are various types of solid waste, such as waste fan blades, processing of low-value recyclable plastics, construction waste and fermentation products of kitchen waste, etc. Different solid wastes have different treatment processes, but there is no method that can effectively coordinate the treatment of the above-mentioned various solid wastes. Summary of the invention

[0005] One of the purposes of the embodiments of the present invention is to provide a method for preparing components for green plants based on multi-source solid waste, which can coordinately process waste fan blades and waste plastics to prepare components for green plants.

[0006] The second purpose of the embodiment of the present invention is to provide a method for preparing components for green plants based on multi-source solid waste, which can coordinately process waste fan blades, waste plastics and construction waste to prepare components for green plants.

[0007] The third purpose of the embodiment of the present invention is to provide a method for preparing components for green plants based on multi-source solid waste, which can coordinately process waste fan blades and waste plastics, construction waste and kitchen waste to prepare components for green plants.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] Provided is a method for preparing a component for green plants based on multi-source solid waste, comprising providing waste fan blades and waste plastics, crushing the waste fan blades and the waste plastics respectively and mixing them to form a mixture, hot-pressing the mixture into a green body using a mold; attaching a layer of cement mortar on the surface of the green body to obtain a preliminary component, and adding nutrient soil into the preliminary component to obtain the component for green plants.

[0010] As a further solution of the method for preparing components for green plants based on multi-source solid waste, the mass ratio of crushed waste fan blades to crushed waste plastics is no more than 2:1.

[0011] As a further solution of the method for preparing a green plant component based on multi-source solid waste, attaching a layer of cement mortar on the surface of the green body means:

[0012] Providing construction waste, crushing the construction waste to obtain sand particles, adding cement and water, and mixing them evenly to obtain cement mortar;

[0013] The blank is completely immersed in cement mortar with the opening facing downwards, and then taken out for curing, so that the cement mortar solidifies and adheres to the surface of the blank to obtain a preliminary component.

[0014] As a further solution of the method for preparing components for green plants based on multi-source solid waste, the mass ratio of cement, sand and water is 1:4-5:0.5-0.8.

[0015] As a further solution of the method for preparing components for green plants based on multi-source solid waste, the particle size of the sand particles is less than 0.5 mm.

[0016] As a further solution of the method for preparing components for green plants based on multi-source solid waste, the mold includes an inner cylinder and an outer cylinder. The outer cylinder is fixed, and the mixture is laid into the outer cylinder to a set height; then the inner cylinder is placed in the outer cylinder to press the mixture at the bottom, and the distance between the outer wall of the inner cylinder and the inner wall of the outer cylinder is adjusted, and then the inner cylinder is fixed, and the mixture is injected between the outer wall of the inner cylinder and the inner wall of the outer cylinder to a set height, the mixture between the inner cylinder and the outer cylinder is pressurized, and the inner cylinder and the outer cylinder are heated at the same time to melt the plastic in the mixture.

[0017] As a further solution of the method for preparing components for green plants based on multi-source solid waste, the inner tube and the outer tube are heated to a temperature of 80-180° C. and the applied pressure is 0.5-1 MPa.

[0018] As a further solution of the method for preparing components for green plants based on multi-source solid waste, the particle size of the crushed waste fan blades is less than 1 cm, and the particle size of the waste plastics is less than 0.5 cm.

[0019] As a further solution of the method for preparing a green plant component based on multi-source solid waste, the method for preparing the nutrient soil is as follows:

[0020] Provide kitchen waste, perform anaerobic fermentation on the kitchen waste to obtain organic residue and anaerobic sludge, perform aerobic composting and maturation treatment on the organic residue and anaerobic sludge to form nutrient soil.

[0021] Beneficial effects:

[0022] The method of the present invention can be used to coordinately dispose of waste fan blades and waste plastics for preparing components for green plants, which can effectively reduce the production cost of the components for green plants.

[0023] The present invention uses crushed concrete construction waste as fine aggregate, mixes it with cement and water to prepare cement mortar, and immerses a green body obtained by hot pressing a mixture of waste fan blades and waste plastics into the cement mortar for slurry treatment, which can improve the appearance and structural strength of the green body, thereby increasing the service life of the green plant component. The present invention uses cement construction waste to prepare cement mortar for green body slurry treatment, which can effectively dispose of and utilize construction waste.

[0024] The present invention uses the fine residue and biogas residue produced in the anaerobic fermentation process of kitchen waste as the bottom soil of greening components after removing the biological toxicity through aerobic composting and maturation treatment, which can shorten the maturation time in the factory, and at the same time play a role in water retention, reduce maintenance water, and provide certain nutrients.

[0025] The method of the present invention can realize the coordinated treatment of waste fan blades, waste plastics, construction waste and kitchen waste, and can effectively reduce the production cost of components for green plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0027] Figure 1 It is a cross-sectional schematic diagram of preparing a blank by using a mold according to an embodiment of the present invention.

[0028] Figure 2 It is a top view schematic diagram of preparing a blank by using a mold according to an embodiment of the present invention.

[0029] Figure 3 It is a schematic cross-sectional view of a preliminary product of the component described in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0031] An embodiment of the present invention provides a method for preparing a component for green plants based on multi-source solid waste, providing waste fan blades and waste plastics, crushing the waste fan blades and the waste plastics respectively and mixing them to form a mixture, and using a mold to hot-press the mixture to form a green body; a layer of cement mortar is attached to the surface of the green body to obtain a preliminary component, and nutrient soil is added into the preliminary component to obtain a component for green plants.

[0032] Among them, the main components of the blades of waste wind turbines are a mixture of glass fiber or carbon fiber and various resins. Remove other appendages of the wind turbine blades and cut the fiber-resin mixture into a size that can be put into the crusher. Waste plastics are preferably low-value recyclable plastics, obtained from classified recycling channels, mainly various thermoplastics, that is, the mass proportion of thermoplastics in waste plastics is not less than 80%. Priority is given to plastic recyclables with low grade, difficult to directly recycle as raw materials, and mixed components. Its thermoplasticity is used as an adhesive, and the purity of the components is not required to be high.

[0033] After a layer of cement mortar is attached to the surface of the blank, the appearance of the blank can be beautified, the blank can have the texture of cement mortar, and the structural strength of the components for green plants can be improved.

[0034] The method of this embodiment can be used to coordinately dispose of waste fan blades and waste plastics for use in preparing components for green plants, which can effectively reduce the production cost of the components for green plants.

[0035] Furthermore, the mass ratio of the crushed waste fan blades to the crushed waste plastics is no more than 2:1, so that the fiber materials in the blades can be stably bonded together by the melted plastic, and the obtained blank can have sufficient strength.

[0036] Furthermore, the particle size of the crushed waste fan blades is less than 1 cm, and the particle size of the waste plastics is less than 0.5 cm, so as to improve the texture and structural strength of the blank.

[0037] Furthermore, attaching a layer of cement mortar on the surface of the body means:

[0038] Providing construction waste, crushing the construction waste to obtain sand particles, adding cement and water, and mixing them evenly to obtain cement mortar;

[0039] The blank is completely immersed in cement mortar with the opening facing downwards, and then taken out for curing, so that the cement mortar solidifies and adheres to the surface of the blank to obtain a preliminary component.

[0040] The construction waste in this embodiment is mainly concrete construction waste from demolition, which is crushed and used as fine aggregate. The fine aggregate is evenly mixed with cement and water to form cement mortar, and the green body is immersed in the cement mortar with the opening facing downward. After the cement mortar is cured and dried, it is fixedly attached to the surface of the green body to improve the appearance and structural strength of the green body, thereby increasing the service life of the green plant component. In this embodiment, cement construction waste is used to prepare cement mortar for green body slurrying, which can effectively dispose of and utilize construction waste.

[0041] Furthermore, the mass ratio of cement, sand and water is 1:4-5:0.5-0.8. By adjusting the addition ratio of cement, sand and water, the cement mortar maintains fluidity, which is convenient for the slurry hanging treatment of the blank, that is, the cement mortar can be hung on the blank.

[0042] Among them, after the cement mortar is prepared, it is placed in a larger container, and the blank is immersed in the cement mortar with its opening facing downward and then lifted up. The immersion-extraction steps can be repeated several times according to actual conditions; finally, the blank is placed with its opening facing downward for curing, and the curing can be natural drying or drying treatment at a certain temperature. The curing steps are conventional technical means in the field and will not be described in detail.

[0043] Furthermore, the mass ratio of cement, sand and water in the cement mortar is 1:5:0.65, which can ensure the fluidity of the cement mortar and the appropriate thickness of the cement mortar attached to the blank, so that the initial component has sufficient structural strength.

[0044] Furthermore, the particle size of the sand particles is less than 0.5 mm, so as to improve the aesthetics and structural strength of the components for green plants.

[0045] Furthermore, the mold includes an inner cylinder and an outer cylinder. The outer cylinder is fixed, and the mixture is laid into the outer cylinder to a set height; then the inner cylinder is placed in the outer cylinder to press the mixture at the bottom, and the distance between the outer wall of the inner cylinder and the inner wall of the outer cylinder is adjusted, and then the inner cylinder is fixed, and the mixture is injected into the space between the outer wall of the inner cylinder and the inner wall of the outer cylinder to a set height, and pressure is applied to the mixture between the inner cylinder and the outer cylinder, and the inner cylinder and the outer cylinder are heated at the same time to melt the plastic in the mixture and fix the fibers in the melted and solidified plastic.

[0046] In this embodiment, the shape of the mold can be cylindrical, elliptical or rectangular, etc., for ease of processing. The bottom of the outer cylinder can also be provided with a protrusion to open a hole at the bottom of the green plant component.

[0047] Among them, the set height of the bottom mixture is the thickness of the bottom of the green body, and the set height of the side wall mixture is the height of the side wall of the green body. The two set height values, the inner diameter of the outer tube and the outer diameter of the inner tube can all be determined according to the size of the actual green plant components.

[0048] Furthermore, the inner and outer cylinders are heated to a temperature of 80-180°C and a pressure of 0.5-1MPa. By controlling the heating temperature and pressure, the plastic is kept at a suitable melting speed, thereby preventing the fiber from being accumulated in a certain place and affecting the quality of the green plant component.

[0049] Wherein, the preparation method of the nutrient soil is as follows:

[0050] Provide kitchen waste, perform anaerobic fermentation on the kitchen waste, obtain kitchen waste organic residue and anaerobic sludge, perform aerobic composting and maturation treatment on the kitchen waste organic residue and anaerobic sludge to form nutrient soil, and green plants can be buried in the nutrient soil with their roots.

[0051] In this embodiment, the current mainstream treatment process for kitchen waste is anaerobic fermentation. The pretreatment process of this process will produce organic fine residue, and anaerobic will produce biogas residue. The fine residue and biogas residue can be removed by aerobic composting and maturation to remove biological toxicity, but it is generally difficult to meet the standards of commercial organic fertilizers in terms of nutrients. Used as the subsoil of greening components, it can shorten the maturation time in the factory, while playing a role in water retention, reducing maintenance water, and providing certain nutrients. Among them, anaerobic fermentation and aerobic composting maturation treatment of kitchen waste are both conventional technical means in the field, and the details will not be repeated.

[0052] After the blank is cured, the cured component product can be shaped according to actual needs, such as removing burrs on the surface of the component product, or painting the surface of the component product to improve the appearance of the component product.

[0053] Next, the technical solution of the present invention is further described by using specific implementation methods.

[0054] Crushing concrete-type construction waste to obtain sand particles with a particle size of less than 0.5 mm, adding cement and water, with the mass ratio of cement, sand particles and water being 1:5:0.65, and mixing evenly to obtain cement mortar, which is then stored in a container for later use;

[0055] Providing waste fan blades, removing the appendages of the fan blades, cutting the fiber resin mixture part into a size that can be put into a crusher, crushing it, and obtaining a crushed material A with a particle size of less than 1 cm; providing waste thermoplastic plastics, crushing it, and obtaining a crushed material B with a particle size of less than 0.5 cm; mixing the crushed material A and the crushed material B in a mass ratio of 2:1.3 to obtain a mixture;

[0056] like Figure 1and Figure 2 As shown, a circular barrel-shaped outer cylinder 1 with an inner diameter of 23 cm and a cylindrical inner cylinder 2 with an outer diameter of 20 cm are provided, the outer cylinder 1 is fixed, and the mixture is laid into the outer cylinder 1 to 3 cm; then the inner cylinder 2 is placed in the outer cylinder 1 to press the mixture at the bottom, and the distance between the outer wall of the inner cylinder 2 and the inner wall of the outer cylinder 1 is adjusted, and then the inner cylinder 2 is fixed, and the mixture is injected into the space between the outer wall of the inner cylinder 2 and the inner wall of the outer cylinder 1 to a set height of 25 cm, and the mixture between the inner cylinder 2 and the outer cylinder 1 is slowly pressurized, and the inner cylinder 2 and the outer cylinder 1 are heated at the same time, heated to 140° C., the pressure is 0.5 MPa, and maintained for 0.5 h, so that the plastic in the mixture melts, and the fibers are fixed in the melted and solidified plastic, and the inner cylinder 2 and the outer cylinder 1 are removed to obtain a blank 3; in order to facilitate the removal of the blank 3, the inner cylinder 2 and the outer cylinder 1 can be coated with a mold release agent, and a pusher device can be provided at the bottom of the outer cylinder 1 to assist in pushing out the blank 3.

[0057] Slowly immerse the blank 3 with the opening facing downward into the cement mortar, and take it out after it is completely immersed; repeat this step once;

[0058] The green body 3 is taken out and placed on the ground with the opening facing downward for drying and curing. Figure 3 , until the cement mortar layer 4 on the surface of the blank 3 is completely dried to obtain a preliminary component; grind off the burrs on the surface of the preliminary component;

[0059] Providing kitchen waste, performing anaerobically treatment on the kitchen waste to obtain kitchen waste organic residue and anaerobic digestate residue, and performing aerobic composting and maturation treatment on the kitchen waste organic residue and anaerobic digestate residue to form nutrient soil;

[0060] Nutrient soil is added to the bottom of the initial component to be used as "base fertilizer" to produce a component for green plants.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A method for preparing a green plant component based on multi-source solid waste, characterized in that: Provide waste fan blades and waste plastics, crush the waste fan blades and waste plastics respectively and mix them to form a mixture, use a mold to hot-press the mixture into a green body; attach a layer of cement mortar on the surface of the green body to obtain a preliminary component, add nutrient soil into the preliminary component to obtain a component for green plants.

2. The method for preparing a green plant component based on multi-source solid waste according to claim 1, characterized in that: The mass ratio of the broken waste fan blades to the broken waste plastics shall not exceed 2:

1.

3. The method for preparing a green plant component based on multi-source solid waste according to claim 1, characterized in that: Attaching a layer of cement mortar to the surface of the blank means: Providing construction waste, crushing the construction waste to obtain sand particles, adding cement and water, and mixing them evenly to obtain cement mortar; The blank is completely immersed in cement mortar with the opening facing downwards, and then taken out for curing, so that the cement mortar solidifies and adheres to the surface of the blank to obtain a preliminary component.

4. The method for preparing a green plant component based on multi-source solid waste according to claim 3, characterized in that: The mass ratio of cement, sand and water is 1:4-5:0.5-0.

8.

5. The method for preparing a green plant component based on multi-source solid waste according to claim 3, characterized in that: The particle size of sand is less than 0.5mm.

6. The method for preparing a green plant component based on multi-source solid waste according to claim 1, characterized in that: The mold includes an inner cylinder and an outer cylinder. The outer cylinder is fixed, and the mixture is laid into the outer cylinder to a set height; then the inner cylinder is placed in the outer cylinder to press the mixture at the bottom, and the distance between the outer wall of the inner cylinder and the inner wall of the outer cylinder is adjusted. Then the inner cylinder is fixed, and the mixture is injected between the outer wall of the inner cylinder and the inner wall of the outer cylinder to a set height, and the mixture between the inner cylinder and the outer cylinder is pressurized, and the inner cylinder and the outer cylinder are heated at the same time to melt the plastic in the mixture.

7. The method for preparing a green plant component based on multi-source solid waste according to claim 6, characterized in that: The temperature of heating the inner cylinder and the outer cylinder is 80-180°C, and the pressure applied is 0.5-1MPa.

8. The method for preparing a green plant component based on multi-source solid waste according to any one of claims 1 to 7, characterized in that: The particle size of the broken waste fan blades is less than 1 cm, and the particle size of the broken waste plastics is less than 0.5 cm.

9. The method for preparing a green plant component based on multi-source solid waste according to any one of claims 1 to 7, characterized in that: The preparation method of the nutrient soil is as follows: Provide kitchen waste, perform anaerobic fermentation on the kitchen waste to obtain organic residue and anaerobic sludge, perform aerobic composting and maturation treatment on the organic residue and anaerobic sludge to form nutrient soil.

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