Filler for water conservancy river regulation and construction method thereof

Abstract

The application relates to the field of river regulation, and particularly discloses a filler for water conservancy river regulation and a construction method thereof. The filler for water conservancy river regulation comprises cellulose material, plant seeds and a soil conditioner, and the cellulose material comprises one or more of sawdust, rice straw and peanut shells; the preparation method is as follows: the cellulose material is crushed, dried, mixed with the plant seeds and the soil conditioner, and a mixture is obtained; a layer of activated carbon particles is uniformly laid in a degradable shell, the mixture is placed on the activated carbon, a layer of activated carbon particles is laid on the mixture, the degradable shell is sealed, and the filler for water conservancy river regulation is obtained. The filler for water conservancy river regulation can be used for river regulation construction, and can maintain the health of a river ecological system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of river management, more specifically, it relates to a filler for water conservancy river management and a construction method thereof. BACKGROUND

[0002] As an important channel for water resources and a component of the ecological system, many rivers have problems such as siltation, erosion, and bank collapse due to natural factors and human activities, resulting in a decline in river function, and even causing floods, land degradation, and ecological damage.

[0003] Water conservancy river management is an important measure to maintain the ecological environment of rivers and the utilization efficiency of water resources, and filler materials play a crucial role in it. Filler materials can effectively improve the river situation, protect the river bank and soil, and achieve sustainable development of water conservancy rivers.

[0004] Filler plays an important role in river regulation. Siltation and dam damage are common problems in rivers, which can negatively affect river traffic capacity and flood control capacity. Filler materials such as river sand and river pebbles can be used for riverbed dredging and dike reinforcement work. By filling suitable materials, damaged riverbeds and dikes can be repaired, the stability and flow capacity of the river can be enhanced, and the risk of floods can be reduced. Secondly, water erosion and erosion not only cause soil infertility, but also lead to ecological degradation of the river. In water conservancy river management, filler materials can be used to build flood control dikes, river revetments, and afforestation projects. These projects can effectively reduce soil erosion, stabilize river banks, block the drifting of silt, and protect the stability of the surrounding soil and ecological environment.

[0005] Conventional filler materials are often non-active engineering materials that lack support and promotion of biological habitats. Engineering fillers contain chemicals or other impurities, which pose a risk of water pollution and can harm the river ecosystem. SUMMARY

[0006] In order to maintain the health of the river ecosystem, the present application provides a filler for water conservancy river management and a construction method thereof.

[0007] The filler for water conservancy river management and the construction method thereof provided by the present application adopt the following technical solutions:

[0008] In a first aspect, a filler for water conservancy river management includes 30-50 parts by weight of cellulose material, 1-5 parts by weight of plant seeds, and 20-30 parts by weight of soil conditioner, wherein the cellulose material includes one or more of sawdust, straw, and peanut shells.

[0009] By adopting the above technical solution, the use of natural cellulose materials, high-quality seeds, and soil conditioners that meet environmental standards can provide better biological support and habitat for river ecological restoration. The cellulose material provides a good growth medium for the seeds, and the soil conditioner can increase soil fertility and retain water, helping the growth and root system of the plants. In this way, the seeds in the filler will germinate and grow, forming a plant cover layer, promoting the recovery and stability of the ecosystem. At the same time, the cellulose material in the filler has good degradation performance, which can gradually decompose and degrade over time, allowing the plant roots to naturally root and integrate with the natural environment, which helps to reduce potential pollution to water quality and reduce the impact on aquatic organisms and the ecosystem, helping to protect water quality and maintain the health of the river ecosystem.

[0010] Optionally, the plant seeds include one or more of reed, water onion, and cattail.

[0011] By adopting the above technical solution, the introduction of reed, water onion, and cattail seeds can promote the growth and reproduction of vegetation, forming a dense vegetation cover. Vegetation can effectively maintain soil stability, reducing water erosion and erosion. By increasing vegetation cover, the soil in the filler area is better protected, reducing soil loss into the water body and reducing the risk of water pollution. The vegetation introduced by reed, water onion, and cattail seeds has a certain adsorption and filtration effect. Their root systems can absorb and purify nutrients, organic pollutants, and some heavy metals in water. Through the absorption of plants, these substances can be fixed and transformed, thereby improving the water quality and purification capacity of the water body.

[0012] Optionally, the soil conditioner includes 20-30% humus and 70-80% bentonite.

[0013] By adopting the above technical solution, the soil conditioner can make the soil more stable and reduce soil erosion. Humus with high water retention can prevent water flow from directly eroding the soil, while bentonite with high viscosity can increase the cohesion and erosion resistance of the soil. This helps to maintain the integrity of the soil in the filler area, reducing soil loss and water pollution caused by water erosion. Humus is rich in organic matter and nutrients, which can provide plants with abundant nutrients. In addition, they also provide a suitable environment for the growth and reproduction of microorganisms in the soil. This is very important for promoting the ecological function and biodiversity of the soil, which is beneficial to maintaining the health and balance of the river ecosystem.

[0014] Optionally, it also includes a degradable shell, which is used to protect the remaining components of the filler from being washed away by the river water flow.

[0015] By adopting the technical scheme, the degradable shell can form a protective layer to wrap the filler and prevent it from being directly exposed to the water flow. This can reduce the risk of the filler being washed and eroded by the water flow, and reduce the loss rate of the filler. The stability of the filler helps to maintain the long-term stability and function of the project. The degradable shell can contain organic matter, some of which can provide nutrients for plant growth. When the shell degrades, the organic matter in it can be released into the surrounding environment to provide nutrients and a suitable growth environment for plants. This is very beneficial for vegetation growth and root development in the filler area. The degradable shell has a lower environmental impact. Compared with using non-degradable protective materials, the degradable shell reduces the risk of environmental pollution and meets the principles of sustainable development.

[0016] Optionally, it also includes 5-15 parts by weight of activated carbon particles.

[0017] By adopting the technical scheme, the activated carbon has highly developed pore structure and adsorption capacity, which can effectively adsorb and remove organic matter, odor, color and other pollutants in the water body. It can adsorb various dissolved pollutants, thereby reducing pollution to the water body and improving water quality. The surface of the activated carbon particles has a certain degree of roughness and pore structure, providing a larger biological attachment surface for microorganisms. This helps microorganisms in the water body to attach and grow, forming a stable microbial community, thereby promoting biological treatment processes in the water body and improving the self-cleaning ability of the water body.

[0018] In a second aspect, the application provides a preparation method of a filler for water conservancy river regulation, which adopts the following technical scheme:

[0019] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0020] S1, crushing and drying the cellulose material, and mixing the cellulose material with plant seeds and soil conditioners to obtain a mixture;

[0021] S2, uniformly laying a layer of activated carbon particles in the degradable shell, placing the mixture on the activated carbon, and then laying a layer of activated carbon particles on the mixture, sealing the degradable shell to obtain the filler for water conservancy river regulation.

[0022] By adopting the technical scheme, by combining vegetation conservation, soil improvement and pollutant adsorption and other technical means, the pollution risk to the environment can be reduced, and the requirements of sustainable development can be met.

[0023] Optionally, the preparation method of the degradable shell is:

[0024] A1, adding a plasticizer: adding polylactic acid and epoxidized soybean oil in the starch and stirring uniformly to obtain a preparation;

[0025] A2, adding a degradation agent: adding Aspergillus niger to the preparation;

[0026] A3, processing and preparation: the preparation is made into a hollow container by extrusion molding, and uniform holes are punched around the container to obtain a degradable shell.

[0027] By adopting the above technical solution, since the hollow container is made by extrusion molding in the preparation method, and uniform holes are punched around, the water flow can pass through the filler but will not disperse the filler components in the degradable shell, so that the filler components can play a stable and lasting role. The addition of polylactic acid and epoxidized soybean oil in starch makes the prepared degradable shell have good degradability, and the addition of Aspergillus niger makes the degradable shell can be quickly degraded in water environment, which will not affect the growth of internal plant seeds.

[0028] In a third aspect, the application provides a construction method of a filler for water conservancy river regulation, which adopts the following technical solution:

[0029] A construction method of a filler for water conservancy river regulation, comprising the following steps: removing sundries, residues and unstable soil in the river channel, and ensuring that the bottom and surrounding area are flat, uniformly laying the filler on the riverbed bottom and using a curing agent to fix the degradable shell to the riverbed bottom.

[0030] By adopting the above technical solution, removing sundries and residues in the river channel can provide a clean foundation for laying the filler, ensuring good contact between the filler and the riverbed bottom. Uniformly laying the filler on the riverbed bottom can achieve continuous coverage of the filler, effectively covering the exposed soil at the bottom. This helps to slow down the water flow speed, reduce erosion and erosion, and at the same time provides a stable surface for plant growth and root development. By using a curing agent to fix the degradable shell to the riverbed bottom, the shell can be prevented from moving or falling off under the scouring of water flow. This helps to enhance the stability of the filler structure, prolong the service life of the filler, and avoid potential pollution to the environment.

[0031] In summary, the application has the following beneficial effects:

[0032] 1、Due to the use of natural cellulose materials, high-quality seeds, and soil conditioners that meet environmental standards, the application can provide better biological support and habitat for river ecological restoration. Cellulose materials provide a good growth medium for seeds, and soil conditioners can increase soil fertility and retain water, helping plants grow and root. In this way, the plant seeds in the filler will germinate and grow, forming a plant cover layer, promoting the recovery and stability of the ecosystem. At the same time, the cellulose material in the filler has good degradation performance, which can gradually decompose and degrade over time, allowing the plant roots to naturally root and integrate with the natural environment, which helps to reduce potential pollution to water quality and reduce the impact on aquatic organisms and the ecosystem, helping to protect water quality and maintain the health of the river ecosystem.

[0033] 2、In the application, the hollow container is preferably made by extrusion molding and uniformly perforated around, the water flow can pass through the filler but will not disperse the filler components in the degradable shell, so that the filler components can play a stable and lasting role. Adding polylactic acid and epoxidized soybean oil to starch can prepare a degradable shell with good degradability, and adding aspergillus niger spores can make the degradable shell quickly degrade in the water environment without affecting the growth of the internal plant seeds.

[0034] 3、The method of the application can provide a clean foundation for laying the filler by removing debris and residues in the river, ensuring good contact between the filler and the river bottom. Uniformly laying the filler on the riverbed bottom can achieve continuous coverage of the filler, effectively covering the exposed soil at the bottom. This helps to slow down the water flow, reduce erosion and erosion, and at the same time provides a stable surface for plant growth and root development. By using a solidifying agent to fix the degradable shell to the riverbed bottom, the shell can be prevented from moving or falling off under the scouring of water flow. This helps to enhance the stability of the filler structure, prolong the service life of the filler, and avoid potential pollution to the environment. DETAILED DESCRIPTION

[0035] The application is further described in detail below in conjunction with the examples.

[0036] Preparation example of degradable shell

[0037] Preparation example 1

[0038] The preparation method of the degradable shell is as follows:

[0039] A1, add plasticizer: add 100g polylactic acid and 60g epoxidized soybean oil to 1000g starch and stir evenly to obtain a preparation;

[0040] A2, add degrading agent: add 20g aspergillus niger spores to the preparation;

[0041] A3, processing preparation: the prepared body is made into a hollow container by extrusion molding, and uniformly punched around the container, the hole diameter is <8mm, to obtain a degradable shell.

[0042] Preparation example 2

[0043] The preparation method of the degradable shell is:

[0044] A1, adding plasticizer: 100g polylactic acid and 60g epoxidized soybean oil are added in 1000g starch and stirred uniformly to obtain a prepared body;

[0045] A2, processing preparation: the prepared body is made into a hollow container by extrusion molding, and uniformly punched around the container, the hole diameter is <8mm, to obtain a degradable shell.

[0046] Embodiment

[0047] Embodiment 1

[0048] A preparation method of a water conservancy river regulation filler, comprising the following steps:

[0049] S1, the cellulose material is crushed and dried, 5000g of straw is mixed with 500g of reed seeds and 3000g of soil conditioner to obtain a mixture;

[0050] S2, uniformly lay a layer of activated carbon particles 750g in the degradable shell, place the mixture on the activated carbon, and then lay a layer of activated carbon particles 750g on the mixture, seal the degradable shell, to obtain a water conservancy river regulation filler.

[0051] The degradable shell is prepared by preparation example 1, and the soil conditioner includes 25% humus and 75% bentonite.

[0052] Embodiment 2

[0053] A preparation method of a water conservancy river regulation filler, comprising the following steps:

[0054] S1, the cellulose material is crushed and dried, 3000g of straw is mixed with 100g of reed seeds and 2000g of soil conditioner to obtain a mixture;

[0055] S2, uniformly lay a layer of activated carbon particles 250g in the degradable shell, place the mixture on the activated carbon, and then lay a layer of activated carbon particles 250g on the mixture, seal the degradable shell, to obtain a water conservancy river regulation filler.

[0056] The degradable shell is prepared by preparation example 1, and the soil conditioner includes 25% humus and 75% bentonite.

[0057] Embodiment 3

[0058] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0059] S1, after crushing and drying the cellulose material, 4000g of straw is mixed with 300g of reed seeds and 2500g of soil conditioner to obtain a mixture;

[0060] S2, uniformly lay a layer of 500g of activated carbon particles in the degradable shell, place the mixture on the activated carbon, and then lay another layer of 500g of activated carbon particles on the mixture, seal the degradable shell, and obtain the filler for water conservancy river regulation.

[0061] The degradable shell is prepared by the preparation example 1, and the soil conditioner comprises 25% humus and 75% bentonite.

[0062] Example 4

[0063] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0064] S1, after crushing and drying the cellulose material, 4000g of wood chips is mixed with 300g of reed seeds and 2500g of soil conditioner to obtain a mixture;

[0065] S2, uniformly lay a layer of 500g of activated carbon particles in the degradable shell, place the mixture on the activated carbon, and then lay another layer of 500g of activated carbon particles on the mixture, seal the degradable shell, and obtain the filler for water conservancy river regulation.

[0066] The degradable shell is prepared by the preparation example 1, and the soil conditioner comprises 25% humus and 75% bentonite.

[0067] Example 5

[0068] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0069] S1, after crushing and drying the cellulose material, 4000g of peanut shells is mixed with 300g of reed seeds and 2500g of soil conditioner to obtain a mixture;

[0070] S2, uniformly lay a layer of 500g of activated carbon particles in the degradable shell, place the mixture on the activated carbon, and then lay another layer of 500g of activated carbon particles on the mixture, seal the degradable shell, and obtain the filler for water conservancy river regulation.

[0071] The degradable shell is prepared by the preparation example 1, and the soil conditioner comprises 25% humus and 75% bentonite.

[0072] Example 6

[0073] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0074] S1, after crushing and drying the cellulose material, 4000g of straw is mixed with 300g of reed seeds and 2500g of soil modifier to obtain a mixture;

[0075] S2, uniformly lay a layer of 500g of activated carbon particles in the degradable shell, place the mixture on the activated carbon, and then lay another layer of 500g of activated carbon particles on the mixture, seal the degradable shell, and obtain the filler for water conservancy river regulation.

[0076] The degradable shell is prepared by the preparation example 1, and the soil modifier comprises 20% humus and 80% bentonite.

[0077] Example 7

[0078] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0079] S1, after crushing and drying the cellulose material, 4000g of straw is mixed with 300g of reed seeds and 2500g of soil modifier to obtain a mixture;

[0080] S2, uniformly lay a layer of 500g of activated carbon particles in the degradable shell, place the mixture on the activated carbon, and then lay another layer of 500g of activated carbon particles on the mixture, seal the degradable shell, and obtain the filler for water conservancy river regulation.

[0081] The degradable shell is prepared by the preparation example 1, and the soil modifier comprises 20% humus and 80% bentonite.

[0082] Comparative example

[0083] Comparative example 1

[0084] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0085] S1, after crushing and drying the cellulose material, 4000g of straw is mixed with 300g of reed seeds and 2500g of soil modifier to obtain a mixture;

[0086] S2, uniformly lay a layer of 500g of activated carbon particles in the degradable shell, place the mixture on the activated carbon, and then lay another layer of 500g of activated carbon particles on the mixture, seal the degradable shell, and obtain the filler for water conservancy river regulation.

[0087] The degradable shell is prepared by the preparation example 2, and the soil modifier comprises 25% humus and 75% bentonite.

[0088] Comparative example 2

[0089] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0090] The cellulose material is crushed and dried, 4000g of rice straw is mixed with 300g of reed seeds, 2500g of soil conditioner and activated carbon particles to obtain the filler.

[0091] The soil conditioner comprises 25% humus and 75% bentonite.

[0092] Comparative Example 3

[0093] A preparation method of a filler for water conservancy river regulation, comprising the following steps:

[0094] S1, the cellulose material is crushed and dried, 4000g of rice straw is mixed with 2500g of soil conditioner to obtain a mixture;

[0095] S2, a layer of 500g of activated carbon particles is uniformly laid in a degradable shell, the mixture is placed on the activated carbon, and another layer of 500g of activated carbon particles is laid on the mixture, the degradable shell is sealed to obtain the filler for water conservancy river regulation.

[0096] The degradable shell is prepared by the preparation example 1, and the soil conditioner comprises 25% humus and 75% bentonite.

[0097] Performance detection test

[0098] Detection method

[0099] A section of river water is sampled, and the river water is used to simulate the flow of river water in a natural environment to test examples 1-7 and comparative examples 1-3 for 30 days, respectively, to observe the anti-scouring ability, water quality improvement effect, and the pollutant content of the river water is detected.

[0100] Table 1 experimental data statistics

[0101]

[0102]

[0103] As can be seen from Example 4 and Comparative Example 1 in combination with Table 1, the difference between Example 4 and Comparative Example 1 is that the degradable shell in Example 4 is prepared from Preparation Example 2. Since no Aspergillus niger spores are added in the preparation of the degradable shell using corn starch in Preparation Example 2, the degradation rate of the degradable shell in the river water environment is very low, which leads to the failure of the plant seeds in the filler to germinate and grow normally, and thus the filler fails to purify the water quality and improve the water body biocompatibility, so the test results of the experimental water body in terms of dissolved oxygen, suspended solids, and coliform bacteria content are significantly lower than those of Example 4. This shows that the addition of polylactic acid and epoxidized soybean oil to the starch to prepare the degradable shell has good degradability, and the addition of Aspergillus niger spores enables the degradable shell to degrade rapidly in the water body environment, does not affect the growth of the internal plant seeds, helps to reduce the potential pollution to the water quality, and reduces the impact on aquatic organisms and the ecosystem, thus helping to protect the water quality and maintain the health of the river ecosystem.

[0104] As can be seen from Example 4 and Comparative Example 2 in combination with Table 1, the filler in Comparative Example 2 does not use a degradable shell, and the filler is directly put into the water body, with a loss rate of more than 20%. The role of the filler in water purification and promoting ecological restoration of the water body is also greatly reduced. This shows that the filler is wrapped to prevent it from being directly exposed to the water flow. This can reduce the risk of the filler being scoured and eroded by the water flow and reduce the loss rate of the filler. The stability of the filler helps to maintain the long-term stability and function of the project. The degradable shell can contain organic matter, some of which can have nutrients needed for plant growth. When the shell degrades, the organic matter therein can be released into the surrounding environment to provide nutrients and a suitable growth environment for plants.

[0105] As can be seen from Example 4 and Comparative Example 3 in combination with Table 1, Comparative Example 3 does not add plant seeds, and only uses cellulose material, soil conditioner, and activated carbon particles to play the role of adsorption purification and improvement of the water body. Comparative Example 3 has a significant gap in the effect of purifying the water body compared to Example 4. This shows that the use of natural cellulose material, high-quality seeds, and soil conditioner can provide better biological support and habitat in river ecological restoration. The cellulose material provides a good growth medium for the seeds, and the soil conditioner can increase soil fertility and retain water, which helps the growth and root penetration of plants. In this way, the plant seeds in the filler will germinate and grow, forming a plant cover layer to promote the recovery and stability of the ecosystem. At the same time, the cellulose material of the filler has good degradability and can gradually decompose and degrade over time, allowing the plant roots to naturally penetrate and integrate with the natural environment, which helps to reduce the potential pollution to the water quality and reduces the impact on aquatic organisms and the ecosystem, thus helping to protect the water quality and maintain the health of the river ecosystem.

[0106] It can be seen from Examples 1-3 and Table 1 that the filler in the present application can play a better role by adjusting the components of the filler, and the amount of Example 4 is the best.

[0107] It can be seen from Examples 3-7 and Table 1 that better effects can be achieved by changing the categories of plant seeds and the proportions of soil conditioners. The vegetation introduced by plant seeds such as reed, water onion and cattail has a certain adsorption and filtration effect. Their root systems can absorb and purify nutrients, organic pollutants and part of heavy metals in water. Through the absorption of plants, these substances can be fixed and transformed, thereby improving the water quality and purification capacity of the water body. Reed has a better effect, humus with high water retention can prevent water flow from directly eroding the soil, and bentonite with high viscosity can increase the cohesion and erosion resistance of the soil. This helps to maintain the soil integrity of the filler area and reduce soil loss and water pollution caused by water erosion. Humus is rich in organic matter and nutrients, which can provide plants with rich nutrients. In addition, they also provide a suitable environment for the growth and reproduction of microorganisms in the soil. The proportion of the soil conditioner used in Example 4 has the best effect.

[0108] The specific embodiments are only an explanation of the present application, which is not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as they are within the scope of the claims of the present application, they are protected by the Patent Law.

Claims

1. A filler material for water conservancy and river channel management, characterized in that, The material comprises 30-50 parts by weight of cellulose material, 1-5 parts of plant seeds, and 20-30 parts of soil conditioner, wherein the cellulose material includes one or more of sawdust, straw, and peanut shells; it also comprises a biodegradable shell, which protects the remaining components of the filler from being washed away and rendered ineffective by river water flow, and the method for preparing the biodegradable shell is as follows: A1. Adding plasticizers: Add polylactic acid and epoxidized soybean oil to starch and stir evenly to obtain the preparative body; A2. Add degradation agent: Add Aspergillus niger strain to the pretreatment medium; A3. Processing and preparation: The preparative body is extruded into a hollow container, and holes are evenly punched around the container to obtain a biodegradable shell; the soil conditioner includes 20-30% humus and 70-80% bentonite.

2. The filler material for water conservancy and river channel management according to claim 1, characterized in that: The plant seeds include one or more of reeds, water onions, and cattails.

3. The filler material for water conservancy and river channel management according to claim 1, characterized in that: It also includes 5-15 parts by weight of activated carbon granules.

4. A method for preparing filler material for water conservancy and river channel management as described in any one of claims 1-3, characterized in that: Includes the following steps: S1. After pulverizing and drying the cellulose material, the cellulose material is thoroughly mixed with plant seeds and soil conditioner to obtain a mixture; S2. A layer of activated carbon particles is evenly laid in the biodegradable shell. The mixture is placed on the activated carbon, and another layer of activated carbon particles is laid on the mixture. The biodegradable shell is then sealed to obtain the filler for water conservancy and river management.

5. A construction method for filler material for water conservancy and river channel management as described in any one of claims 1-3, characterized in that: Remove debris, residue, and unstable soil from the riverbed, and ensure that the bottom and surrounding areas are level. Spread the filler evenly on the bottom of the riverbed and use a curing agent to fix the biodegradable shell to the bottom of the riverbed.

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