Flower cultivation soil based on discarded pit mud and distiller's grains and preparation method thereof

Abstract

The application provides a kind of flower cultivation soil based on waste pit mud, distiller's grains and a preparation method thereof, which comprises the following steps: step S1: after drying, ore grinding, the waste pit mud is screened to obtain large block stone with particle size greater than 4mm, large particle sandstone with particle size of 2-4mm and purple mud with particle size less than 2mm; step S2: the purple mud and the large particle sandstone are mixed according to a mass ratio of 7:3-8:2 to obtain pit mud without stone; step S3: the pit mud without stone and the distiller's grains are mixed according to a mass ratio of 7.5:2.5-8.5:1.5 to obtain the cultivation soil base; step S4: lime is added to the cultivation soil base to adjust the pH to 6-7, and an appropriate amount of surfactant is added to obtain the flower cultivation soil. The method can obtain the flower cultivation soil with suitable porosity and rich organic matter, which can effectively promote the growth of plants and realize the recycling of waste pit mud and distiller's grains.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of resource utilization of solid waste in distilleries, and particularly relates to a flower cultivation soil based on abandoned pit mud and distiller's grains and a preparation method thereof. BACKGROUND

[0002] In the process of brewing, a large amount of solid waste and wastewater will be produced, and pit mud and distiller's grains are typical solid waste produced by distilleries. The pit mud is a microbial carrier and contains a large number of microbial populations required for brewing. With the passage of time, the nutrients required by the microorganisms in the pit mud gradually decrease, causing the pit mud to age and become ineffective. The ineffective pit mud is generally mixed with a small amount of fresh pit mud for reuse, but a large amount of abandoned pit mud will still be produced, which is generally only simply landfilled. However, the pit mud contains a large amount of high-quality clay, and direct landfill will cause waste of high-quality clay resources.

[0003] Distiller's grains are the product after the fermentation of grain and contain a large amount of high-quality organic matter. The current mainstream treatment method is to dry and burn, which also causes waste of organic resources. It is particularly important for distilleries to develop a method for the coordinated disposal of abandoned pit mud and distiller's grains. On the one hand, the disposal cost of solid waste of distilleries can be reduced, and on the other hand, certain economic value can be generated, which is of great significance to the sustainable development of distilleries.

[0004] Therefore, it is urgent to develop a method for utilizing abandoned pit mud and distiller's grains. SUMMARY

[0005] Therefore, the application provides a flower cultivation soil based on abandoned pit mud and distiller's grains and a preparation method thereof. The method utilizes abandoned pit mud and distiller's grains to prepare high-quality flower cultivation soil, which can effectively promote the growth of plants.

[0006] In a first aspect, the application provides a method for preparing a flower cultivation soil based on abandoned pit mud and distiller's grains, which comprises the following steps:

[0007] Step S1: drying, grinding and screening the abandoned pit mud to obtain large block stones, large-particle sandstones with a particle size of 2-4 mm, and purple mud with a particle size of less than 2 mm;

[0008] Step S2: mixing the purple mud and the large-particle sandstones according to a mass ratio of 7:3-8:2 to obtain pit mud without stones;

[0009] Step S3: mixing the pit mud without stones and the distiller's grains according to a mass ratio of 7.5:2.5-8.5:1.5 to obtain a cultivation soil base;

[0010] Step S4: adding lime to the cultivation soil base to adjust the pH to 6-7, and adding a surfactant to obtain the flower cultivation soil.

[0011] According to the application, by separating the discarded pit mud to obtain large-grained sand and purple mud, mixing the discarded pit mud according to a certain proportion to obtain pit mud without stone strips, and then mixing the pit mud without stone strips with distiller's grains according to a certain proportion to obtain a soil matrix for cultivating flowers, and then adjusting the pH to a suitable value and adding a surfactant, a soil for cultivating flowers with a suitable porosity and rich in organic matter can be obtained, which can effectively promote the growth of plants and realize the recycling of discarded pit mud and distiller's grains.

[0012] In some embodiments, in step S1, the screening treatment comprises: screening the dried and ground discarded pit mud through a screen with a mesh diameter of 4 mm to separate large stone strips and a mixture; and then screening the mixture through a screen with a mesh diameter of 2 mm to separate large-grained sand with a particle size of 2-4 mm and purple mud with a particle size of less than 2 mm.

[0013] In some embodiments, the discarded pit mud is derived from a Maotai-flavor liquor cellar.

[0014] In some embodiments, the distiller's grains are Maotai-flavor distiller's grains.

[0015] In some embodiments, in step S4, the amount of the surfactant added is 2-6 mg / kg based on the mass of the soil matrix for cultivating flowers.

[0016] In some embodiments, the surfactant comprises at least one of sodium dodecyl benzene sulfonate, sodium lauryl sulfate, sucrose fatty acid ester, or dodecyl trimethyl ammonium chloride.

[0017] In some embodiments, step S4 is performed in a horizontal drum mixer, and the stirring is performed at a stirring speed of 20-30 rpm for 15-30 min.

[0018] In some embodiments, the amount of the lime added is 5-10 g / kg based on the mass of the soil matrix for cultivating flowers.

[0019] In a second aspect, the application provides a soil for cultivating flowers based on discarded pit mud and distiller's grains, which is prepared according to the method of any one of the embodiments of the first aspect.

[0020] According to the application, the soil for cultivating flowers is prepared according to the method of any one of the embodiments of the first aspect, and thus has the beneficial effects of the first aspect, and can effectively promote the growth of plants.

[0021] In some embodiments, the porosity of the soil for cultivating flowers is 50%-56%.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] By using the waste pit mud and distiller's grains, and adding appropriate amount of lime and surfactant, the flower cultivation soil with suitable porosity and rich organic matter can be obtained, which can effectively promote the growth of plants, realize the recycling of waste pit mud and distiller's grains, and effectively reduce the recycling cost without adding other components. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0025] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples with appropriate solutions.

[0026] In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0027] In a first aspect, the present application provides a method for preparing flower cultivation soil based on waste pit mud and distiller's grains, comprising the following steps:

[0028] Step S1: After drying, grinding and screening the waste pit mud, large blocks of stone, large particle sand with a particle size of 2-4mm and purple mud with a particle size of less than 2mm are obtained respectively;

[0029] Step S2: The purple mud and large particle sand are mixed according to a mass ratio of 7:3-8:2 to obtain pit mud without stone;

[0030] Step S3: The pit mud without stone and the distiller's grains are mixed according to a mass ratio of 7.5:2.5-8.5:1.5 to obtain the cultivation soil base;

[0031] Step S4: Lime is added to the cultivation soil base to adjust the pH to 6-7, and a surfactant is added to obtain the flower cultivation soil.

[0032] According to the present application, by separating the waste pit mud to obtain large-grained sand and purple mud, mixing the same according to a certain proportion to obtain pit mud without stone, and then mixing the same with distiller's grains according to a certain proportion to obtain a soil matrix for cultivating flowers, adjusting the pH to a suitable value and adding a surfactant, a flower cultivating soil with suitable porosity and rich in organic matter can be obtained, which can effectively promote the growth of plants and realize the recycling of waste pit mud and distiller's grains.

[0033] Specifically, in step S1, the main components in the waste pit mud are large stones, large-grained sand and purple mud, wherein the large stones have no value for the preparation of the flower cultivating soil and can be removed by separation, the large stones obtained can also be reused as new pit mud ingredients, and the large-grained sand obtained after removing the stones can adjust the porosity of the cultivating soil, so that the flower cultivating soil has suitable air permeability, which is beneficial to the growth of plant roots and the reproduction and activity of microorganisms; the purple mud is a high-quality clay in the waste pit mud, which contains various minerals (such as iron and silicon) and organic matter required by plants, and can also promote the reproduction and activity of microorganisms, which is helpful to the decomposition of organic matter and the release of nutrients absorbable by plants, so that the large-grained sand and the purple mud obtained by separation can be reserved;

[0034] In step S2, the purple mud and the large-grained sand are mixed according to the above mass ratio, wherein the purple mud as the main body makes the pit mud without stone have a high content of components promoting plant growth, and the mixing of the large-grained sand in the above proportion is beneficial to making the cultivating soil have a suitable porosity;

[0035] In step S3, the pit mud without stone and the distiller's grains are mixed according to the above mass ratio, the distiller's grains contain a large amount of organic matter and microorganisms, which can effectively improve the fertility of the cultivating soil and promote the growth of plants, and at the same time, the distiller's grains also affect the porosity of the flower cultivating soil, and the mixing according to the above proportion can make the flower cultivating soil have a high fertility while having a suitable porosity;

[0036] In step S4, the surfactant is added to the culture soil matrix. The surfactant can reduce surface tension, promote better penetration of water into the soil, avoid water concentration on the surface, reduce water evaporation, promote uniform distribution of soil moisture, and alleviate the problem of hardening. At the same time, it can also improve the microbial environment in the soil, and promote the decomposition of organic matter in cooperation with the microorganisms in the distiller's grains. In addition, due to the presence of organic acids such as lactic acid, acetic acid, and citric acid in the distiller's grains, the pH of the soil is relatively low, which is not suitable for the growth of plants and is also not conducive to the reproduction and activity of microorganisms. By adding lime to adjust the pH of the soil to 6-7, this condition is more conducive to the growth of plants. After the flower culture soil is accumulated, it has a suitable porosity, which makes it have suitable air permeability, promotes the growth of plant roots and microorganisms, and at the same time, the volatile substances (such as alcohol and low aldehydes) in the distiller's grains are fully volatilized and removed, reducing the adverse effects of the above components on plants, and microorganisms continue to decompose organic matter, improving the fertility of the culture soil. Therefore, the flower culture soil obtained by the above method can effectively promote the growth of plants and realize the recycling of waste pit mud and distiller's grains.

[0037] In some embodiments, in step S1, the screening treatment includes: screening the dried and milled waste pit mud through a screen with a mesh diameter of 4 mm to separate large stones and a mixture; and then screening the mixture through a screen with a mesh diameter of 2 mm to separate large particle sandstones with a particle size of 2-4 mm and purple mud with a particle size of less than 2 mm.

[0038] Based on the above embodiments, the dried and milled waste pit mud is screened through a screen with a mesh diameter of 4 mm, which can separate and remove large stones with a particle size greater than 4 mm. The screened mixture is further screened through a screen with a mesh diameter of 2 mm, which can separate large particle sandstones with a particle size of 2-4 mm and purple mud with a particle size of less than 2 mm. The separated large particle sandstones and purple mud can be used to adjust the porosity of the flower culture soil by proper proportioning.

[0039] In some embodiments, the waste pit mud is derived from a Maotai-flavor wine cellar. Based on the above embodiments, it can be understood that the types of minerals and organic matter in waste pit mud derived from different types of wine cellars are different. The waste pit mud derived from a Maotai-flavor wine cellar contains a high content of minerals such as iron, manganese, and calcium. At the same time, the Maotai-flavor cellar mud can provide better air permeability and humidity regulation during the fermentation process. This soil characteristic can promote slow fermentation and long-term aging of the wine body, which helps to gradually enrich and mature the flavor of the wine. Therefore, using waste pit mud derived from a Maotai-flavor wine cellar is more conducive to the growth of plants.

[0040] In some embodiments, the distiller's grains are Maotai-flavor distiller's grains. Based on the above embodiments, it can be understood that the types of minerals and organic matter in different types of distiller's grains are different, and the Maotai-flavor distiller's grains have rich minerals and organic matter, which can promote the growth and development of plants, increase the water retention capacity and air permeability of the soil, and reduce the soil compaction. Therefore, the use of Maotai-flavor distiller's grains can be more conducive to the growth of plants.

[0041] In some embodiments, in step S4, the amount of surfactant added is 2-6 mg / kg based on the mass of the cultivation soil base. Based on the above embodiments, by adding the surfactant in the above amount to the cultivation soil base, the soil compaction can be reduced and the soil fertility can be improved by improving the water permeability, increasing the nutrient availability, improving the soil structure, and promoting the microbial activity, so as to effectively improve the wetting and air permeability of the soil and promote the growth of plants.

[0042] In some embodiments, in step S4, the flower cultivation soil is obtained after the addition of the surfactant and the stacking for more than 21 days. Based on the above embodiments, during the stacking process, the porosity of the cultivation soil gradually decreases and tends to be stable after 21 days due to the action of gravity and water evaporation and other factors. Therefore, the flower cultivation soil with appropriate porosity can be obtained after stacking for more than 21 days.

[0043] In some embodiments, the surfactant includes at least one of sodium dodecyl benzene sulfonate, sodium lauryl sulfate, sucrose fatty acid ester, or dodecyl trimethyl ammonium chloride. Based on the above embodiments, the use of the above types of surfactants can effectively promote the growth of plants.

[0044] In some embodiments, step S4 is performed in a horizontal drum mixer, and the stirring is performed at a stirring speed of 20-30 rpm for 15-30 min. Based on the above embodiments, the components in the cultivation soil can be fully mixed under the above conditions, and the cultivation soil with more uniform components can promote the growth of plants.

[0045] In some embodiments, the amount of lime added is 5-10 g / kg based on the mass of the cultivation soil base. Based on the above embodiments, by using the above amount of lime, the pH of the soil can be adjusted, and the Ca element can be supplemented to the soil, which can promote the growth of plants.

[0046] In a second aspect, the present application provides a flower cultivation soil based on waste pit mud and distiller's grains, which is prepared according to the method of any one of the embodiments of the first aspect.

[0047] According to the present application, the flower cultivation soil is prepared according to the method of any one of the embodiments of the first aspect, and therefore has the beneficial effects of the first aspect, which can effectively promote the growth of plants.

[0048] In some embodiments, the porosity of the flower cultivation soil is 50% to 56%. Based on the above embodiments, when the porosity of the flower cultivation soil is 50% to 56%, it is beneficial to provide suitable water retention capacity and good drainage, while ensuring sufficient air exchange to support the healthy growth of root systems and promote the growth of plants.

[0049] The scheme of the present application will be described below in combination with the following specific examples. Unless otherwise specified, the raw materials used in the following examples are all from ordinary commercially available products, and the devices or equipment used are all purchased from conventional market sales channels.

[0050] The waste pit mud comes from the pit mud of a certain liquor factory in Guizhou producing Maotai-flavor liquor; the waste pit mud is dried, ground, and separated by a screen with a hole diameter of 4 mm to obtain large stones and a mixture; then the mixture is separated by a screen with a hole diameter of 2 mm to obtain large particle sandstones with a particle size of 2-4 mm and purple mud for standby.

[0051] The distiller's grains come from the distiller's grains of a certain liquor factory in Guizhou producing Maotai-flavor liquor.

[0052] Example 1

[0053] A method for preparing a flower cultivation soil:

[0054] The purple mud and the large particle sandstone are prepared according to a mass ratio of 7:3 to obtain pit mud without stones, and the pit mud without stones and the distiller's grains are prepared according to a mass ratio of 7.5:2.5 to obtain a cultivation soil base, 5 g / kg of lime and 2 mg / kg of sodium dodecyl benzene sulfonate (SDBS) are added and uniformly mixed in a horizontal mixer at a stirring speed of 20 rpm, and finally the flower cultivation soil is obtained after 21 days of static stacking.

[0055] The soil porosity and pH value of the flower cultivation soil are shown in Table 1.

[0056] Examples 2-3

[0057] A method for preparing a flower cultivation soil:

[0058] The method is substantially the same as that of Example 1, except that the amount of lime added and the amount of surfactant added are different, as shown in Table 1.

[0059] The soil porosity and pH value of the flower cultivation soil are shown in Table 1.

[0060] Examples 4-6

[0061] A method for preparing a flower cultivation soil:

[0062] The method is substantially the same as that of Example 1, except that the type of surfactant is different, as shown in Table 1.

[0063] The soil porosity and pH value of the flower cultivation soil are shown in Table 1.

[0064] Example 7

[0065] A preparation method of a flower cultivation soil comprises the following steps:

[0066] The preparation method of the flower cultivation soil is substantially the same as that of Example 1, except that the mass ratio of the purple red mud to the sandstone is different, and the mass ratio is shown in Table 1.

[0067] The soil porosity and pH value of the flower cultivation soil are shown in Table 1.

[0068] Example 8

[0069] A preparation method of a flower cultivation soil comprises the following steps:

[0070] The preparation method of the flower cultivation soil is substantially the same as that of Example 1, except that the mass ratio of the purple red mud to the sandstone is different, and the mass ratio is shown in Table 1.

[0071] The soil porosity and pH value of the flower cultivation soil are shown in Table 1.

[0072] Comparative Examples 1-2

[0073] A preparation method of a flower cultivation soil comprises the following steps:

[0074] The preparation method of the flower cultivation soil is substantially the same as that of Example 1, except that the mass ratio of the purple red mud to the sandstone is different, and the mass ratio is shown in Table 1.

[0075] The soil porosity and pH value of the flower cultivation soil are shown in Table 1.

[0076] Comparative Example 3

[0077] A preparation method of a flower cultivation soil comprises the following steps:

[0078] The preparation method of the flower cultivation soil is substantially the same as that of Example 1, except that the mass ratio of the purple red mud to the sandstone is different, and the mass ratio is shown in Table 1.

[0079] The soil porosity and pH value of the flower cultivation soil are shown in Table 1.

[0080] Comparative Examples 4-5

[0081] A preparation method of a flower cultivation soil comprises the following steps:

[0082] The preparation method of the flower cultivation soil is substantially the same as that of Example 1, except that the mass ratio of the purple red mud to the sandstone is different, and the mass ratio is shown in Table 1.

[0083] The soil porosity and pH value of the flower cultivation soil are shown in Table 1.

[0084] Table 1

[0085]

[0086]

[0087] The flower cultivation soil prepared from Examples 1-8 and Comparative Examples 1-5 was subjected to a Chlorophytum comosum cultivation test, and the test variety was Chlorophytum comosum with golden edges. The flowerpot specifications were 15 cm x 9 cm x 10.5 cm (upper circular diameter x lower circular diameter x pot height), and a plant with a root length of 5 cm and a plant height of about 8 cm was selected, and the growth condition was similar to that of a seedling. Each pot contained one plant, and 10 pots of nutrient soil were cultivated in each group and placed in the same cultivation greenhouse. The cultivation greenhouse was an intelligent greenhouse, and the temperature in the greenhouse was controlled at 15-25°C. Other management measures were consistent with the conventional Chlorophytum comosum cultivation management process. The cultivation time was 60 days, and the Chlorophytum comosum growth and development indicators measured included plant height, crown width, maximum leaf width, maximum leaf length, and root volume. The results are shown in Table 2 below.

[0088] Table 2

[0089]

[0090]

[0091] According to Tables 1 and 2, each example can prepare flower cultivation soil with suitable pH and soil porosity by using discarded pit mud and distiller's grains as raw materials, and by adding a certain amount of lime and surfactant. Compared with the comparative examples, the flower cultivation soil can more effectively promote the growth of plants. The mass ratio of purple red mud to sand, the mass ratio of non-stripped pit mud to distiller's grains, and whether to add surfactant have a great influence on the soil porosity of the flower cultivation soil, and the soil porosity between 50% and 56% is more conducive to the growth of plants.

[0092] The above are only preferred embodiments of the present application and are not used to limit the present application. Any modifications, equivalent replacements, and improvements made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for preparing flower cultivation soil based on waste pit mud and distiller's grains, characterized in that, The method comprises the following steps: Step S1: drying, grinding and screening the waste pit mud to obtain large block stones, large particle sandstones with a particle size of 2-4 mm and purple mud with a particle size less than 2 mm; Step S2: mixing the purple mud and the large particle sandstones according to a mass ratio of 7:3-8:2 to obtain pit mud without stones; Step S3: mixing the pit mud without stones and distiller's grains according to a mass ratio of 7.5:2.5-8.5:1.5 to obtain a soil base; Step S4: adding lime to the soil base to adjust the pH to 6-7, and adding a surfactant to obtain the flower growing soil; The waste pit mud is derived from a Maotai-flavor liquor cellar; The distiller's grains are Maotai-flavor distiller's grains; In step S4, the amount of the surfactant added is 2-6 mg / kg based on the mass of the soil base; The surfactant comprises at least one of sodium dodecyl benzene sulfonate, sodium lauryl sulfate, sucrose fatty acid ester or dodecyl trimethyl ammonium chloride; The amount of the lime added is 5-10 g / kg based on the mass of the soil base.

2. The method according to claim 1, characterized in that, In step S1, the screening treatment comprises: screening the dried and ground waste pit mud through a screen with a mesh diameter of 4 mm to separate large block stones and a mixture; and then screening the mixture through a screen with a mesh diameter of 2 mm to separate large particle sandstones with a particle size of 2-4 mm and purple mud with a particle size less than 2 mm.

3. The method according to claim 1, characterized in that, The step S4 is performed in a horizontal drum mixer at a stirring speed of 20-30 rpm for 15-30 min.

4. A flower cultivation soil based on discarded pit mud and vinasse, characterized by, The flower growing soil is prepared according to any one of the methods of claims 1-3.

5. The flower growing soil according to claim 4, characterized by The flower growing soil has a porosity of 50%-56%.

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