A method of using waste foamed bricks for ornamental planting

Abstract

The application discloses a method for ornamental planting of waste foamed bricks, which comprises the following steps: adding dehydrated sludge into water to prepare a sludge-water mixture with a certain proportion, placing the mixture on a magnetic stirrer, stirring, adding an alkaline reagent and a commercial foaming agent, heating, and preparing a sludge foaming agent solution; crushing the waste foamed bricks into particles with a certain size, uniformly mixing the particles with commercial ornamental planting nutrient soil at a certain proportion; mixing the sludge foaming agent into the commercial ornamental planting nutrient soil and the waste foamed brick particles, and uniformly mixing; and pouring the mixture into planting boxes with a certain specification, scattering ornamental plant seeds, and curing and cultivating; the waste foamed bricks, the sludge and the nutrient soil are mixed and used, which is beneficial to improving the hardening of the nutrient soil and keeping the soil loose. The method uses multiple wastes in the batching, which not only changes the waste into treasure and improves the resource utilization rate, but also occupies less land and reduces the pollution to the environment.

Description

Technical Field

[0001] The invention relates to the field of resource application of waste foam bricks, and in particular to a method for using waste foam bricks for ornamental planting. Background Art

[0002] Most of the existing ornamental nutrient soil raw materials are a mixture of garden soil, river sand, peat soil, mountain mud, sawdust, wood ash, humus, crop straw and fungus cultivation waste. They have not undergone reasonable ingredient preparation and disinfection and sterilization, are easy to harden, have poor water permeability, and are not conducive to the normal growth and development of vegetation. For example, Chinese patent publication number CN 109232072 A discloses a nutrient soil for potted pomegranates, which comprises the following raw materials in parts by weight: 35-40 parts of garden soil, 0.2-0.5 parts of decomposed chicken manure, 0.8-1.2 parts of fish bone meal, 0.6-0.8 parts of plant ash, 0.2-0.4 parts of bentonite, 5-8 parts of mountain mud, 50-70 parts of coniferous soil, 10-20 parts of chitosan, 5-10 parts of plant ash, 5-10 parts of pine bark, 0.2-0.3 parts of decomposed bean cake, 1-1.5 parts of peat soil, 0.4-0.6 parts of bentonite, 1.2-1.5 parts of decomposed cottonseed hulls. .6 parts, 1-3 parts of old lime, 10-20 parts of earthworm manure, 5-10 parts of river sand, 2-5 parts of active microorganisms, and the rest is humus soil. This patent uses a mixture of garden soil, humus, crop straw and fungus cultivation waste materials, and has not undergone reasonable ingredient preparation and disinfection and sterilization. It is easy to become compacted and has poor water permeability, which is not conducive to the normal growth and development of vegetation.

[0003] In recent years, foam bricks have gained widespread use as a building insulation material. There are two types of foam bricks, based on their raw materials: foam cement bricks and autoclaved foam concrete bricks. Foam cement bricks are made by mixing small foam particles with cement and condensing them. They offer lightweight, thermally insulating, soundproofing, and fireproof properties. Autoclaved foam concrete bricks are primarily made from cement, slag powder, and river sand. After mixing, they are foamed with pressurized air, forcing air into the mixture. The resulting micro-bubble structure is then cast in molds and produced through a series of processes, including autoclaving.

[0004] At present, a large amount of waste foamed bricks will be generated in the process of house demolition. At present, the resource utilization direction of waste foamed bricks and other waste building materials is mainly to recycle them as raw materials to make foamed bricks again. In the process of making foamed bricks from waste foamed bricks and other waste building materials, the waste foamed bricks and other waste building materials need to be crushed and treated by multiple chemical reactions, the preparation process is complex, the production cost is high, and the cost of recycling waste foamed bricks is increased due to the dispersion and small range of house demolition, so that the waste foamed bricks cannot be recycled and utilized completely, causing certain resource waste. For example, the Chinese patent with the authorized publication number CN101412634B discloses a method for making foamed bricks from waste building materials, which comprises the operation steps of mixing, foaming, mixing and injection molding. The patent needs to crush and treat the waste foamed bricks and other waste building materials by multiple chemical reactions, the preparation process is complex, the production cost is high, and a large amount of waste foamed bricks are needed in the making process, so the cost of recycling waste foamed bricks is increased due to the dispersion and small range of demolition, so that the waste foamed bricks cannot be recycled and utilized completely, causing certain resource waste. At present, the treatment of waste foamed bricks is mainly landfill, and the waste foamed bricks increase the pressure of building waste landfill and also pollute the soil and underground water environment to a certain extent.

[0005] Therefore, a method for ornamental planting of waste foamed bricks is provided to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a method for ornamental planting of waste foamed bricks. The waste foamed bricks used in the method are waste materials generated after the demolition of conventional building industry thermal insulation materials, containing cement, slag powder, river sand, etc., and are crushed to prepare particles with a particle size of 1-10 mm. The cement is a powdery hydraulic inorganic cementing material. After adding water and stirring, a slurry is formed, which can harden in air or water and can firmly cement sand, stone and other materials together. The slag powder is a short name for granulated blast furnace slag powder, which is a high-quality concrete admixture. The slag powder contains more than 95% glass body and dicalcium silicate, calcium yellow long stone, wollastonite and other minerals. River sand is a natural stone in a natural state, which is produced by long-time repeated impact and friction of water. Its composition is complex, the surface has a certain smoothness, and the impurity content is high. River sand can be used as a building material and a certain quality soil. The use of waste foamed bricks and sludge with nutrient soil is beneficial to improve the nutrient soil hardening condition and maintain the soil loose. The method uses multiple waste materials, which not only turns waste into treasure and improves the resource utilization rate, but also occupies less land and reduces environmental pollution.

[0007] The purpose of the present application is achieved as follows:

[0008] A method for ornamental planting of waste foamed bricks, comprising the following steps:

[0009] Step 1: Prepare a sludge foaming agent solution: Add dehydrated sludge to water to form a sludge-water mixture in a certain proportion. Place the mixture on a magnetic stirrer and stir. Add an alkaline agent and a commercially available foaming agent, and heat to prepare a sludge foaming agent solution. Commercially available foaming agents are surfactants whose main function is to produce stable foam in aqueous solution. Adding foaming agents to the sludge can improve the carbon-nitrogen ratio (C / N) of the sludge, provide a skeleton structure, and facilitate sludge stabilization. This step can produce a foaming solution with good foaming properties.

[0010] Step 2: Preparation of waste foam brick particles: Crushing the waste foam bricks into particles of a certain size. A moderate particle size has a uniform texture and good ventilation and drainage capabilities, as well as water and fertilizer retention, which is very beneficial to plant growth. If the particle size is too large, it has a large porosity and a low specific surface area, and therefore usually has better air permeability and water permeability, but poor water infiltration and retention, resulting in rapid loss of water and salt. If the particle size is too small, although it can better retain water and nutrients, it will have poor air permeability, which will affect plant growth.

[0011] Step 3: Prepare the molding raw materials: take conventional commercially available ornamental planting nutrient soil and place it in a plastic container, take the waste foam brick particles prepared in step 2 and pour them into the plastic container, mix the commercially available ornamental planting nutrient soil and the waste foam brick particles evenly, and then place them in a container; the waste foam brick particles are porous inside, have low density, high porosity, and strong adsorption and interception capabilities, and can be used to loosen soil and hydrophobic materials, while the commercially available ornamental planting nutrient soil is rich in organic matter and nutrients. After the two are evenly mixed, the waste foam brick particles can be used to improve the soil structure, increase the soil's air permeability and water permeability, and the nutrient soil can also be used to provide rich nutrients to promote plant growth;

[0012] Step 4: Prepare the sludge foaming agent: Pour the sludge foaming agent solution prepared in step 1 into a commercially available foaming machine for foaming. The foamed foam is stored in a 25kg plastic bucket. This step can produce foam with uniform particle size, stability and resistance to breakage.

[0013] Step 5: Preparing the molding raw material: injecting the foam prepared in step 4 into the mixed molding raw material of the commercially available ornamental planting nutrient soil and waste foam brick particles prepared in step 3, slowly mixing evenly, so that the foam is evenly mixed in the commercially available ornamental planting nutrient soil and waste foam brick particles, which can improve the physical properties of the soil and enhance its air permeability and water permeability;

[0014] Step 6: Molding: Pour the molding material prepared in step 5 into the planting box to a height of 3-12 cm, and place a water tray at the bottom of the planting box;

[0015] Step 7: Maintenance and cultivation: Sprinkle the prepared ornamental plant seeds into the planting box prepared in step 6, place it in a place with visible sunlight at room temperature, water it 1 to 2 times a day, 0.5 to 1.5L each time, and observe the germination time and growth of the plants.

[0016] The specific operation of step 1 is as follows: 0.5-2 kg of dehydrated sludge discharged from the centrifugal dehydration room of a domestic sewage treatment plant in Zhengzhou is taken in a 10 kg plastic bucket and placed in a 5 L high temperature resistant polypropylene container or other container, and water is added to the container to make a mud-water mixture with a solid content of 5% to 10%; the container is placed on a magnetic stirrer, stirred, and 10-50 g of calcium hydroxide or sodium hydroxide solid is added while stirring, and 1-5 mL of a commercially available foaming agent is added dropwise. After mixing evenly, a heating rod is placed and heated, and the temperature is measured while heating. When the temperature rises to 60-90 ° C, the heating is stopped for 5 minutes to obtain a sludge foaming agent solution. This step is placed in a ventilation device for operation. During the heating process of the mud-water mixture, the upper end of the container is sealed with plastic wrap, and a thermometer is hung through the central drilled hole for temperature measurement.

[0017] The specific operation of step 2 is as follows: take 2-8 kg of waste foam bricks, first crush them into large blocks using a crushing tool, and then place them in a crusher and crush them for 2-10 minutes until the waste foam brick particles have a particle size of 1-10 mm, and the amount of waste foam brick particles with a diameter of 1-10 mm in the waste foam brick particles is greater than 80% of the total amount of waste foam brick particles.

[0018] The waste foam bricks used in step 2 are waste materials generated after the removal of thermal insulation materials in the conventional construction industry.

[0019] In the step 3, 2.5-10 kg of commercially available ornamental planting nutrient soil is placed in a plastic container and evenly mixed with 2-8 kg of the prepared waste foam brick particles.

[0020] The dimensions of the planting box are 60 cm in length, 30 cm in width and 14 cm in depth, and the prepared mixed raw materials are poured to a height of 3 to 12 cm.

[0021] The present invention has the beneficial effect of mixing waste foam bricks and sludge with nutrient soil, which helps improve the compaction of the nutrient soil and maintains the soil looseness. The method uses a variety of waste materials in the ingredients, not only turning waste into treasure and improving resource utilization, but also reducing land occupation and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of the steps of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and examples. Example

[0024] A method for using waste foam bricks for ornamental planting includes the following steps: Step 1: Using a 10kg plastic bucket, 1kg of dehydrated sludge discharged from the centrifugal dehydration room of a domestic sewage treatment plant in Zhengzhou is placed in a 5L high-temperature resistant polypropylene container or other container, and water is added to the container to form a mud-water mixture with a solid content of 10%. The container is placed on a magnetic stirrer and stirred. While stirring, 20g of calcium hydroxide solid is added while stirring, and 2mL of a commercially available foaming agent is added dropwise. After mixing evenly, a heating rod is placed in the container for heating. While heating, stirring is performed, and the temperature is measured. When the temperature rises to approximately 80°C, heating is continued for 5 minutes, and then the heating is stopped to obtain a sludge foaming agent solution. This step is performed in a ventilation device. During the heating of the mud-water mixture, the upper end of the container is sealed with plastic wrap, and a thermometer is hung through a central hole for temperature measurement.

[0025] Step 2: Take 3 kg of waste foam bricks generated by conventional house demolition, first crush them into large blocks with a hammer, and then place them in a crusher for 4 minutes until the particle size of the waste foam bricks is more than 80% between 1 and 10 mm.

[0026] Step 3: Take 7 kg of conventional commercially available ornamental planting nutrient soil and place it in a 20 L plastic container. Take 3 kg of the prepared waste foam brick particles and pour them into the plastic container. Mix them evenly and then place them aside.

[0027] Step 4: Pour the prepared sludge foaming agent solution into a commercially available foaming machine for foaming, and store the foamed solution in a 25kg plastic barrel.

[0028] Step 5: Inject the foam into the prepared mixed molding raw material of commercially available ornamental planting nutrient soil and waste foam brick particles, and slowly mix evenly to make the foam evenly mixed in the commercially available ornamental planting nutrient soil and waste foam brick particles.

[0029] Step 6: Pour the prepared molding raw materials into a planting box with a length of 60 cm, a width of 30 cm, and a depth of 14 cm, with an injection height of 5 cm. Place a water tray at the bottom of the planting box.

[0030] Step 7, sprinkle into 20 prepared ornamental plant seeds after the planting box for preparation, be placed in visible sunlight at room temperature, water every day 2 times, each watering 1L, observe that 6 seeds have sprouted when the 10th day, 15 seeds sprouted in 20 days, the about 10cm of plant average height, grow well, the about 15cm of plant average height when 30 days, grow well, the about 23cm of plant average height when 40 days, grow well, the about 30cm of plant average height when 50 days, grow well, the about 35cm of plant average height when 60 days, grow well.By different period plant culture raw material monitoring, obtain following data, in Table 1.

[0031] Table 1 Summary of monitoring data of plant culture raw materials

[0032]

[0033] A method for using waste foam bricks for ornamental planting includes the following steps: Step 1: Using a 10kg plastic bucket, 1kg of dehydrated sludge discharged from the centrifugal dehydration room of a domestic sewage treatment plant in Zhengzhou is placed in a 5L high-temperature resistant polypropylene container or other container, and water is added to the container to form a mud-water mixture with a solid content of 10%. The container is placed on a magnetic stirrer and stirred. While stirring, 20g of calcium hydroxide solid is added while stirring, and 2mL of a commercially available foaming agent is added dropwise. After mixing evenly, a heating rod is placed in the container for heating. While heating, stirring is performed, and the temperature is measured. When the temperature rises to approximately 80°C, heating is continued for 5 minutes, and then the heating is stopped to obtain a sludge foaming agent solution. This step is performed in a ventilation device. During the heating of the mud-water mixture, the upper end of the container is sealed with plastic wrap, and a thermometer is hung through a central hole for temperature measurement.

[0034] Step 2: Take 10 kg of conventional commercially available ornamental planting nutrient soil and place it in a 20 L plastic container.

[0035] Step 3: Pour the prepared sludge foaming agent solution into a commercially available foaming machine for foaming, and store the foamed solution in a 25kg plastic barrel.

[0036] Step 4: Inject the foam into the prepared commercially available ornamental planting nutrient soil raw materials, slowly mix evenly, so that the foam is evenly mixed in the commercially available ornamental planting nutrient soil.

[0037] Step 5: Pour the prepared molding raw materials into a planting box with a length of 60 cm, a width of 30 cm, and a depth of 14 cm, with an injection height of 5 cm. Place a water tray at the bottom of the planting box.

[0038] Step 6, sprinkle into 20 prepared ornamental plant seeds after the planting box for preparation, be placed in visible sunlight at room temperature, water every day 2 times, each watering 1L, observe that 7 seeds have sprouted when the 10th day, 17 seeds sprouted in 20 days, plant average height has 12cm, and plant growth is good, and when 30 days, plant average height is about 20cm, and growth is good, when 40 days, plant average height is about 26cm, and growing way is slow, when 50 days, plant average height is about 28cm, and growing way is slow, when 60 days, plant average height is about 31cm, and growing way is slow, and leaf withering phenomenon occurs.By monitoring plant nutrition soil in different periods, obtain following data, in Table 2.

[0039] Table 2 Plant nutrient soil monitoring data list

[0040]

[0041] In summary, the present invention mixes waste foam bricks and sludge with nutrient soil, which is beneficial to improving the compaction of the nutrient soil, keeping the soil loose, and allowing green plants to grow well.

Claims

1. A method for using waste foam bricks for ornamental planting, characterized in that: The following steps are involved: Step 1: Preparing a sludge foaming agent solution: Dehydrated sludge is added to water to form a sludge-water mixture in a certain proportion. The mixture is placed on a magnetic stirrer and stirred. An alkaline agent and a commercially available foaming agent are added and heated to prepare a sludge foaming agent solution. The commercially available foaming agent is a surfactant that produces stable foam in an aqueous solution. Adding a foaming agent to the sludge can improve the carbon-nitrogen ratio of the sludge, provide a skeleton structure, and facilitate stabilization of the sludge. This step can produce a foaming solution with good foaming properties. Step 2: Prepare waste foam brick particles: crush the waste foam bricks into particles of a certain size. The appropriate particle size has a uniform texture and has good ventilation and drainage capabilities, and can retain water and fertilizer, which is beneficial to plant growth. Step 3: Prepare the molding raw materials: take conventional commercially available ornamental planting nutrient soil and place it in a plastic container, take the waste foam brick particles prepared in step 2 and pour them into the plastic container, mix the commercially available ornamental planting nutrient soil and the waste foam brick particles evenly, and then place them in a container; the waste foam brick particles are porous inside, have low density, high porosity, and strong adsorption and interception capabilities, and can be used to loosen soil and hydrophobic materials, while the commercially available ornamental planting nutrient soil is rich in organic matter and nutrients. After the two are evenly mixed, the waste foam brick particles can be used to improve the soil structure, increase the soil's air permeability and water permeability, and the nutrient soil can also be used to provide rich nutrients to promote plant growth; Step 4: Prepare the sludge foaming agent: Pour the sludge foaming agent solution prepared in step 1 into a commercially available foaming machine for foaming. The foamed foam is stored in a 25 kg plastic bucket. This step can produce foam with uniform particle size, stable and not easy to break; Step 5: Preparing the molding raw material: injecting the foam prepared in step 4 into the mixed molding raw material of the commercially available ornamental planting nutrient soil and waste foam brick particles prepared in step 3, slowly mixing evenly, so that the foam is evenly mixed in the commercially available ornamental planting nutrient soil and waste foam brick particles, which can improve the physical properties of the soil and enhance its air permeability and water permeability; Step 6: Molding: Pour the molding material prepared in step 5 into the planting box to a height of 3-12 cm, and place a water tray at the bottom of the planting box; Step 7: Maintenance and cultivation: Sprinkle the prepared ornamental plant seeds into the planting box prepared in step 6, place it in a place with visible sunlight at room temperature, water it 1 to 2 times a day, 0.5 to 1.5L each time, and observe the germination time and growth of the plants.

2. The method for using waste foamed bricks for ornamental planting according to claim 1, characterized in that: The specific operation of step 1 is as follows: 0.5-2 kg of dehydrated sludge discharged from the centrifugal dehydration room of a domestic sewage treatment plant in Zhengzhou is taken using a 10 kg plastic bucket, and the sludge is placed in a 5 L high-temperature resistant polypropylene container or other container, and water is added to the container to form a mud-water mixture with a solid content of 5%-10%; the container is placed on a magnetic stirrer, and stirring is started. While stirring, 10-50 g of calcium hydroxide or sodium hydroxide solid is added, and 1-5 mL of a commercially available foaming agent is added dropwise. After mixing evenly, a heating rod is placed in the container for heating, stirring while heating, and the temperature is measured. When the temperature rises to 60-90 ° C, the heating is stopped for 5 minutes to obtain a sludge foaming agent solution. This step is performed in a ventilation device. During the heating of the mud-water mixture, the upper end of the container is sealed with plastic wrap, and a thermometer is hung through the central drilled hole for temperature measurement.

3. The method for using waste foamed bricks for ornamental planting according to claim 1, characterized in that: The specific operation of step 2 is as follows: take 2-8 kg of waste foam bricks, first crush them into large blocks using a crushing tool, and then place them in a crusher and crush them for 2-10 minutes until the waste foam brick particles have a particle size of 1-10 mm, and the amount of waste foam brick particles with a diameter of 1-10 mm in the waste foam brick particles is greater than 80% of the total amount of waste foam brick particles.

4. The method for using waste foamed bricks for ornamental planting according to claim 1, characterized in that: The waste foam bricks used in step 2 are waste materials generated after the removal of thermal insulation materials in the conventional construction industry.

5. The method for using waste foamed bricks for ornamental planting according to claim 1, characterized in that: In the step 3, 2.5-10 kg of commercially available ornamental planting nutrient soil is placed in a plastic container and evenly mixed with 2-8 kg of the prepared waste foam brick particles.

6. The method for using waste foamed bricks for ornamental planting according to claim 1, characterized in that: The dimensions of the planting box are 60 cm in length, 30 cm in width and 14 cm in depth, and the prepared mixed raw materials are poured to a height of 3 to 12 cm.

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