An organic compound fertilizer based on hair hydrolysis waste liquid and its preparation method and application

Abstract

The present invention relates to an organic compound fertilizer based on hair hydrolysis waste liquid, and a preparation method and application thereof, and relates to the technical field of organic compound fertilizers. The preparation method of the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps: mixing and grinding cellulose-containing agricultural waste and bentonite, and then sieving to obtain a first mixture; subjecting the first mixture to gradient magnetic field heat treatment to obtain a second mixture; stirring and mixing the second mixture and hair hydrolysis waste liquid, and then adding a fermentation agent for fermentation to obtain a fermentation product; and drying and granulating the fermentation product to obtain the organic compound fertilizer. The organic compound fertilizer provided by the present invention has the characteristics of low crude cellulose content, fast decomposition, and rich nutrients, etc., which can meet the growth requirements of tea trees, improve the quality and yield of tea leaves, and has a wide range of practical uses.

Description

Technical Field

[0001] The invention relates to the technical field of organic compound fertilizers, and in particular to an organic compound fertilizer based on hair hydrolysis waste liquid, and a preparation method and application thereof. Background Art

[0002] The primary mother liquor after hydrochloric acid hydrolysis of hair to extract cystine is a hair hydrolysis waste liquid generated in the process of hydrochloric acid hydrolysis of hair to extract cystine, referred to as the primary mother liquor. This mother liquor contains a variety of amino acids, inorganic salts and other small molecule compounds that are not extracted after hydrolysis, and has great potential utilization value. For example, in the patent previously applied for by the applicant (patent number: CN116268185 A), this hair hydrolysis waste liquid was properly treated and mixed with Chinese medicinal ingredients such as astragalus and mulberry leaves to prepare a feed additive for pregnant sows. This additive can improve the reproductive performance of sows, thereby realizing the resource utilization of hair hydrolysis waste liquid. Therefore, in-depth exploration and development of the comprehensive utilization of hair hydrolysis waste liquid is of great significance and value.

[0003] Traditional organic fertilizers are mostly derived from the composting fermentation of natural materials such as plant residues and animal excrement, which not only effectively handles these wastes, but also realizes the recycling of resources, and provides an important source of organic fertilizers for agricultural production. However, the cellulose content in this type of fertilizer is generally high, usually exceeding 20%. Especially when only using cellulose-containing agricultural waste as raw material, the fermentation of cellulose is not only long in cycle, but also often not thorough in fermentation, causing the fertilizer efficiency of the obtained organic fertilizer to be low, and cannot meet the needs of crops to nutrients when used alone. Simultaneously, in the existing technical literature, no report on the combined fermentation of cellulose-containing agricultural waste and hair hydrolysis waste liquid as main raw materials has been found. Summary of the invention

[0004] In order to solve the above problems and further improve the efficiency of resource utilization, the present invention provides an organic compound fertilizer based on hair hydrolysis waste liquid, and a preparation method and application thereof, which not only realizes the resource utilization of cellulose-containing agricultural waste and hair hydrolysis waste liquid, but also optimizes the nutrient structure of organic fertilizer through scientific formula and preparation process, improves its applicability to crops such as tea trees, and has wide practical application value.

[0005] In a first aspect, the present invention provides a method for preparing an organic compound fertilizer based on hair hydrolysis waste liquid, the method for preparing an organic compound fertilizer based on hair hydrolysis waste liquid comprising the following steps:

[0006] The cellulose-containing agricultural waste and bentonite are mixed and ground, and then sieved to obtain a first mixed material;

[0007] Subjecting the first mixed material to a gradient magnetic field heat treatment to obtain a second mixed material;

[0008] The second mixed material and the hair hydrolysis waste liquid are stirred and mixed, and then a fermentation agent is added to perform fermentation to obtain a fermentation product;

[0009] The fermented product is dried and granulated to obtain the organic compound fertilizer.

[0010] Furthermore, the weight ratio of the cellulose-containing agricultural waste to the bentonite is (95-105):(13-19).

[0011] Furthermore, the particle size of the first mixture is 100-200 meshes.

[0012] Furthermore, the step of subjecting the first mixed material to gradient magnetic field heat treatment to obtain the second mixed material comprises the following process:

[0013] The first mixture is added into a magnetic heating device, and a first magnetic field heat treatment is performed for 30 to 60 minutes under the conditions that the flux coil current is 4 to 8A and the temperature is raised from room temperature to 140 to 180°C at a rate of 10 to 15°C / min; then a second magnetic field heat treatment is performed for 60 to 90 minutes under the conditions that the flux coil current is 10 to 14A and the temperature is further raised to 300 to 350°C at a rate of 10 to 15°C / min, and the second mixture is obtained as the device is cooled.

[0014] Furthermore, the working condition parameters of the first magnetic field heat treatment include a flux coil current of 6A, a temperature of 160°C, and a time of 45 minutes; the working condition parameters of the second magnetic field heat treatment include a flux coil current of 12A, a temperature of 320°C, and a time of 80 minutes.

[0015] Furthermore, the method for preparing the hair hydrolysis waste liquid comprises the following steps:

[0016] The mother liquor after the cystine is extracted by hydrolyzing the hair with hydrochloric acid is filtered through a plate and frame filter and a nanofiltration membrane in sequence to obtain a filtrate;

[0017] The filtrate is evaporated and concentrated and the pH is adjusted to 3.5-5.0 to obtain a hair hydrolysis waste liquid with a solid content of 10-20 wt%.

[0018] Furthermore, the weight ratio of the second mixture to the hair hydrolysis waste liquid is (1-2):1; the fermentation agent accounts for 1-5wt% of the total weight of the second mixture and the hair hydrolysis waste liquid; and the fermentation agent is EM bacterial liquid.

[0019] Furthermore, the working condition parameters of the fermentation include: a fermentation temperature of 30 to 40° C. and a fermentation time of 4 to 8 days.

[0020] In a second aspect, the present invention provides an organic compound fertilizer based on hair hydrolysis waste liquid, wherein the organic compound fertilizer based on hair hydrolysis waste liquid is prepared by the preparation method described in any one of the first aspects.

[0021] In a third aspect, the present invention provides an application of the organic compound fertilizer based on hair hydrolysis waste liquid as described in any one of the second aspects in tea planting, wherein the varieties of the tea include Mengding Ganlu.

[0022] The above technical solution provided by the embodiment of the present invention has at least the following advantages compared with the prior art:

[0023] The embodiment of the present invention provides an organic compound fertilizer based on hair hydrolysis waste liquid and its preparation method and application. The organic compound fertilizer provided by the present invention has the characteristics of low crude cellulose content, fast decomposition, rich nutrients, etc., which can meet the growth requirements of tea trees, improve the quality and yield of tea leaves, and has a wide range of practical uses. Specifically:

[0024] 1) The present invention uses cellulose-containing agricultural waste and hair hydrolysis waste liquid as main raw materials, providing a rich nitrogen source, carbon source organic matter and other trace elements as the basis of nutrients; and adding an appropriate amount of bentonite as a stable carrier, which not only enhances the water retention and soil improvement effects of the fertilizer, but also contains various minerals and trace elements such as iron (Fe), magnesium (Mg), calcium (Ca), sodium (Na), potassium (K) and the like in the bentonite. These components can supplement the nutrients required by plants, and at the same time chelate with organic substances such as amino acids to form a more stable complex, which is conducive to the slow release of nutrients and controls the nutrient release rate.

[0025] 2) On the one hand, the present invention refines the cellulose-containing agricultural waste through mixed grinding, and the surface area is increased, which makes it easier to expose the cellulose in the waste. In addition, the cellulose-containing agricultural waste is fully mixed with bentonite during the grinding process to form a uniform matrix, which is conducive to the uniform distribution and growth of microorganisms. At the same time, the magnetic field heat treatment destroys the internal interaction forces such as hydrogen bonds between cellulose molecules, making its structure looser, thereby reducing the crystallinity and polymerization degree of cellulose, making it easier to be decomposed by microorganisms. Therefore, the present invention improves the physical properties of cellulose-containing agricultural waste and increases the reaction activity of cellulose-containing agricultural waste by introducing bentonite mixed grinding-magnetic field heat treatment combined treatment mode, thereby achieving the effect of reducing the crude cellulose content in the obtained organic compound fertilizer and increasing the maturity time.

[0026] 3) When the organic compound fertilizer based on hair hydrolysis waste liquid provided by the present invention is used to plant tea trees such as Mengding Ganlu, the content of the main quality components of the obtained tea (such as tea polyphenols, catechins, etc.) is significantly improved, which significantly improves the quality and yield of tea. In addition, the present invention also realizes the resource utilization of cellulose-containing agricultural waste and hair hydrolysis waste liquid, which has a wide range of practical application value and important environmental significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 A schematic flow chart of a method for preparing an organic compound fertilizer based on hair hydrolysis waste liquid provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0032] In a first aspect, the present invention provides a method for preparing an organic compound fertilizer based on hair hydrolysis waste liquid, such as Figure 1 As shown, the method for preparing the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps:

[0033] The cellulose-containing agricultural waste and bentonite are mixed and ground, and then sieved to obtain a first mixed material;

[0034] Subjecting the first mixed material to a gradient magnetic field heat treatment to obtain a second mixed material;

[0035] The second mixed material and the hair hydrolysis waste liquid are stirred and mixed, and then a fermentation agent is added to perform fermentation to obtain a fermentation product;

[0036] The fermented product is dried and granulated to obtain the organic compound fertilizer.

[0037] The organic compound fertilizer provided by the present invention has the characteristics of low crude cellulose content, fast decomposition, rich nutrients, etc., can meet the growth requirements of tea trees, improve the quality and yield of tea leaves, and has a wide range of practical uses.

[0038] In some specific embodiments, the cellulose-containing agricultural waste can be selected from straw, waste branches, waste leaves and field weeds, etc., and can be obtained locally according to actual conditions. In the present invention, the cellulose-containing agricultural waste is waste tea branches, waste tea leaves and field weeds left after pruning tea trees.

[0039] In some specific embodiments, granulation can be performed by conventional methods in the art, such as spray granulation, disc granulation, etc. In the present invention, the granulation is preferably performed by a disc granulator.

[0040] In some specific embodiments, the weight ratio of the cellulose-containing agricultural waste to the bentonite is (95-105):(13-19), preferably 100:17.

[0041] In some specific embodiments, the particle size of the first mixture is 100-200 meshes.

[0042] In some specific embodiments, the step of subjecting the first mixed material to gradient magnetic field heat treatment to obtain the second mixed material comprises the following process:

[0043] The first mixture is added into a magnetic heating device, and a first magnetic field heat treatment is performed for 30 to 60 minutes under the conditions that the flux coil current is 4 to 8A and the temperature is raised from room temperature to 140 to 180°C at a rate of 10 to 15°C / min; then a second magnetic field heat treatment is performed for 60 to 90 minutes under the conditions that the flux coil current is 10 to 14A and the temperature is further raised to 300 to 350°C at a rate of 10 to 15°C / min, and the second mixture is obtained as the device is cooled.

[0044] Preferably, the working condition parameters of the first magnetic field heat treatment include a flux coil current of 6A, a temperature of 160°C, and a time of 45 minutes; the working condition parameters of the second magnetic field heat treatment include a flux coil current of 12A, a temperature of 320°C, and a time of 80 minutes.

[0045] In some specific embodiments, the method for preparing the hair hydrolysis waste liquid comprises the following process:

[0046] The mother liquor after the cystine is extracted by hydrolyzing the hair with hydrochloric acid is filtered through a plate and frame filter and a nanofiltration membrane in sequence to obtain a filtrate;

[0047] The filtrate is evaporated and concentrated and the pH is adjusted to 3.5-5.0 to obtain a hair hydrolysis waste liquid with a solid content of 10-20 wt%.

[0048] The present invention adopts plate-and-frame filtration to remove particulate impurities and the like in the primary mother liquor; adopts nanofiltration membrane filtration to remove pigments and salts and the like, thereby reducing ash content, improving the product quality and product stability of hair hydrolysis waste liquid concentrated powder, and facilitating subsequent fermentation steps.

[0049] In some specific embodiments, the weight ratio of the second mixture to the hair hydrolysis waste liquid is (1-2):1; the fermentation agent accounts for 1-5wt% of the total weight of the second mixture and the hair hydrolysis waste liquid; and the fermentation agent is EM bacterial liquid.

[0050] The EM bacterial solution in the present invention can be a commercially available product or can be prepared in-house according to the content disclosed in the prior art. Specifically, the EM bacterial solution [universal type] of Luoyang Oukebaik Biotechnology Co., Ltd. can be directly used, and the raw materials of the EM bacterial solution are: Enterococcus faecalis, Pediococcus acidilactici, Lactobacillus plantarum, Bacillus subtilis, Bacillus licheniformis yeast, etc. and their metabolites.

[0051] In some specific embodiments, the fermentation working condition parameters include: fermentation temperature of 30-40° C., and fermentation time of 4-8 days.

[0052] In a second aspect, based on the same inventive concept, the present invention provides an organic compound fertilizer based on hair hydrolysis waste liquid, wherein the organic compound fertilizer based on hair hydrolysis waste liquid is prepared by the preparation method described in any one of the first aspects.

[0053] The organic compound fertilizer based on hair hydrolysis waste liquid provided by the present invention is realized based on the preparation method described in any one of the first aspects. Therefore, the organic compound fertilizer based on hair hydrolysis waste liquid has at least the beneficial effects of the technical solution described in any one of the first aspects, which will not be described in detail here.

[0054] In a third aspect, based on the same inventive concept, the present invention provides an application of an organic compound fertilizer based on hair hydrolysis waste liquid as described in any one of the second aspects in tea planting, wherein the varieties of tea include Mengding Ganlu.

[0055] When the organic compound fertilizer based on hair hydrolysis waste liquid provided by the present invention is applied to the cultivation of tea trees such as Mengding Ganlu, the content of main quality components (such as tea polyphenols, catechins, etc.) of the obtained tea leaves is significantly improved, which significantly improves the quality and yield of tea leaves and has wide practical application value.

[0056] It should be noted that the component raw materials involved in the organic compound fertilizer based on hair hydrolysis waste liquid and the preparation method thereof provided in the embodiments of the present invention, unless otherwise specified or specified, can be directly commercially available products or homemade using existing public preparation methods; at the same time, the steps and parameters involved, unless otherwise specified or specified, can be carried out according to the existing processing technology of the organic compound fertilizer based on hair hydrolysis waste liquid or directly using existing equipment, and the present invention document will not describe them one by one.

[0057] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods in the following examples that do not specify specific conditions are usually measured according to national standards. If there is no corresponding national standard, then the conditions recommended by the manufacturer are followed.

[0058] The preparation method of hair hydrolysis waste liquid in the following examples and comparative examples includes the following process:

[0059] The mother liquor after the cystine is extracted by hydrolyzing the hair with hydrochloric acid is filtered through a plate and frame filter and a nanofiltration membrane in sequence to obtain a filtrate;

[0060] The filtrate was concentrated by evaporation and the pH was adjusted to 4.5 to obtain a hair hydrolysis waste liquid with a solid content of 15 wt %.

[0061] Example 1

[0062] This example provides an organic compound fertilizer based on hair hydrolysis waste liquid, and the preparation method of the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps:

[0063] Step (1): mixing and grinding cellulose-containing agricultural waste (specifically waste tea tree branches, waste tea leaves and field weeds) and bentonite in a weight ratio of 100:17, and then passing through a 100-mesh sieve to obtain a first mixture;

[0064] Step (2): adding the first mixture obtained in step (1) into a magnetic heating device, performing a first magnetic field heat treatment for 45 minutes under the conditions that the magnetic flux coil current is 6A and the temperature is raised from room temperature to 160°C at a rate of 10°C / min; then performing a second magnetic field heat treatment for 80 minutes under the conditions that the magnetic flux coil current is 12A and the temperature is further raised to 320°C at a rate of 10°C / min, and cooling the device to obtain the second mixture;

[0065] Step (3): stirring and mixing the second mixed material obtained in step (2) and the hair hydrolysis waste liquid at a weight ratio of 1.5:1, and then adding 3.5wt% EM bacterial liquid fermentation agent accounting for the total weight of the second mixed material and the hair hydrolysis waste liquid for fermentation at a temperature of 35° C. for 5 days to obtain a fermented product;

[0066] Step (4): drying and granulating the fermented product obtained in step (3) to obtain the organic compound fertilizer.

[0067] Example 2

[0068] This example provides an organic compound fertilizer based on hair hydrolysis waste liquid, and the preparation method of the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps:

[0069] Step (1): mixing and grinding cellulose-containing agricultural waste (specifically waste tea tree branches, waste tea leaves and field weeds) and bentonite in a weight ratio of 95:13, and then passing through a 100-mesh sieve to obtain a first mixture;

[0070] Step (2): adding the first mixture obtained in step (1) into a magnetic heating device, performing a first magnetic field heat treatment for 60 minutes under the conditions that the magnetic flux coil current is 4A and the temperature is raised from room temperature to 140°C at a rate of 10°C / min; then performing a second magnetic field heat treatment for 60 minutes under the conditions that the magnetic flux coil current is 14A and the temperature is further raised to 350°C at a rate of 10°C / min, and cooling the device to obtain the second mixture;

[0071] Step (3): stirring and mixing the second mixed material obtained in step (2) and the hair hydrolysis waste liquid in a weight ratio of 1:1, and then adding 3.5wt% EM bacterial liquid fermentation agent accounting for the total weight of the second mixed material and the hair hydrolysis waste liquid for fermentation at a temperature of 30° C. for 8 days to obtain a fermented product;

[0072] Step (4): drying and granulating the fermented product obtained in step (3) to obtain the organic compound fertilizer.

[0073] Example 3

[0074] This example provides an organic compound fertilizer based on hair hydrolysis waste liquid, and the preparation method of the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps:

[0075] Step (1): mixing and grinding cellulose-containing agricultural waste (specifically waste tea tree branches, waste tea leaves and field weeds) and bentonite in a weight ratio of 105:19, and then passing through a 100-mesh sieve to obtain a first mixed material;

[0076] Step (2): adding the first mixture obtained in step (1) into a magnetic heating device, performing a first magnetic field heat treatment for 30 minutes under the conditions that the magnetic flux coil current is 8A and the temperature is raised from room temperature to 180°C at a rate of 10°C / min; then performing a second magnetic field heat treatment for 90 minutes under the conditions that the magnetic flux coil current is 10A and the temperature is further raised to 300°C at a rate of 10°C / min, and cooling the device to obtain the second mixture;

[0077] Step (3): stirring and mixing the second mixed material obtained in step (2) and the hair hydrolysis waste liquid in a weight ratio of 2:1, and then adding 3.5wt% EM bacterial liquid fermentation agent accounting for the total weight of the second mixed material and the hair hydrolysis waste liquid for fermentation at a temperature of 40° C. for 4 days to obtain a fermented product;

[0078] Step (4): drying and granulating the fermented product obtained in step (3) to obtain the organic compound fertilizer.

[0079] Comparative Example 1

[0080] This example provides an organic compound fertilizer based on hair hydrolysis waste liquid and a preparation method thereof, which is different from Example 1 only in that no gradient magnetic field heat treatment is performed; the remaining steps and parameters are the same.

[0081] The method for preparing the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps:

[0082] Step (1): mixing and grinding cellulose-containing agricultural waste (specifically waste tea tree branches, waste tea leaves and field weeds) and bentonite in a weight ratio of 100:17, and then passing through a 100-mesh sieve to obtain a first mixture;

[0083] Step (2): stirring and mixing the first mixed material obtained in step (1) and the hair hydrolysis waste liquid in a weight ratio of 1.5:1, and then adding 3.5wt% EM bacterial liquid fermentation agent accounting for the total weight of the second mixed material and the hair hydrolysis waste liquid for fermentation at a temperature of 35° C. for 5 days to obtain a fermented product;

[0084] Step (3): drying and granulating the fermented product obtained in step (2) to obtain the organic compound fertilizer.

[0085] Comparative Example 2

[0086] This example provides an organic compound fertilizer based on hair hydrolysis waste liquid and a preparation method thereof, which is different from Example 1 only in that bentonite is not introduced for mixing and grinding treatment; the remaining steps and parameters are the same.

[0087] The method for preparing the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps:

[0088] Step (1): mixing and crushing cellulose-containing agricultural waste (specifically, waste tea branches, waste tea leaves and field weeds), and then passing through a 100-mesh sieve to obtain a first mixed material;

[0089] Step (2): adding the first mixture obtained in step (1) into a magnetic heating device, performing a first magnetic field heat treatment for 45 minutes under the conditions that the magnetic flux coil current is 6A and the temperature is raised from room temperature to 160°C at a rate of 10°C / min; then performing a second magnetic field heat treatment for 80 minutes under the conditions that the magnetic flux coil current is 12A and the temperature is further raised to 320°C at a rate of 10°C / min, and cooling the device to obtain the second mixture;

[0090] Step (3): stirring and mixing the second mixed material obtained in step (2) and the hair hydrolysis waste liquid at a weight ratio of 1.5:1, and then adding 3.5wt% EM bacterial liquid fermentation agent accounting for the total weight of the second mixed material and the hair hydrolysis waste liquid for fermentation at a temperature of 35° C. for 5 days to obtain a fermented product;

[0091] Step (4): drying and granulating the fermented product obtained in step (3) to obtain the organic compound fertilizer.

[0092] Comparative Example 3

[0093] This example provides an organic compound fertilizer based on hair hydrolysis waste liquid and a preparation method thereof, which is different from Example 1 only in that the gradient magnetic field heat treatment is adjusted to a conventional gradient heat treatment; the remaining steps and parameters are the same.

[0094] The method for preparing the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps:

[0095] Step (1): mixing and grinding cellulose-containing agricultural waste (specifically waste tea tree branches, waste tea leaves and field weeds) and bentonite in a weight ratio of 100:17, and then passing through a 100-mesh sieve to obtain a first mixture;

[0096] Step (2): adding the first mixture obtained in step (1) into a magnetic heating device, and performing a first heat treatment for 45 minutes under the condition of heating from room temperature to 160° C. at a rate of 10° C. / min; then performing a second heat treatment for 80 minutes under the condition of further heating to 320° C. at a rate of 10° C. / min, and cooling the device to obtain the second mixture;

[0097] Step (3): stirring and mixing the second mixed material obtained in step (2) and the hair hydrolysis waste liquid at a weight ratio of 1.5:1, and then adding 3.5wt% EM bacterial liquid fermentation agent accounting for the total weight of the second mixed material and the hair hydrolysis waste liquid for fermentation at a temperature of 35° C. for 5 days to obtain a fermented product;

[0098] Step (4): drying and granulating the fermented product obtained in step (3) to obtain the organic compound fertilizer.

[0099] Test Example 1

[0100] In this example, the crude fiber content in the organic compound fertilizer based on hair hydrolysis waste liquid obtained in the above Examples 1 to 3 and Comparative Examples 1 to 3 was measured according to the existing detection method. The test results are shown in Table 1.

[0101] Table 1

[0102]

[0103]

[0104] It can be seen from Table 1 that, compared with the comparative example, the organic compound fertilizer based on hair hydrolysis waste liquid provided by the embodiment of the present invention has a low crude cellulose content and a shorter fermentation time, and the fermentation effect of Example 1 is the best.

[0105] Test Example 2

[0106] On the basis of Test Example 1, this example further applies the organic compound fertilizer based on hair hydrolysis waste liquid obtained in Example 1 to the planting of Mengding Ganlu tea trees, and uses the nitrogen, phosphorus and potassium compound fertilizer 15-15-15 (nitrogen, phosphorus and potassium ratio is 15:15:15) commonly used for tea trees by local tea farmers as the control group. Application amount: 300kg / mu, deep plowing 20cm for fertilization. In the second year, spring tea was picked, and the picking standard was 1 bud and 2 leaves. After processing using the existing Mengding Ganlu production process, the main quality components were tested and analyzed, and the results are shown in Table 2.

[0107] Table 2

[0108] Test Group Tea polyphenols (%) Catechin(%) Example 1 Group 31.8 24.1 Control group 22.4 15.9

[0109] It can be seen from Table 2 that, compared with conventional tea tree fertilizers, when the organic compound fertilizer based on hair hydrolysis waste liquid provided by the present invention is applied to tea trees such as Mengding Ganlu, the content of main quality components of the obtained tea leaves (such as tea polyphenols, catechins, etc.) is significantly improved; at the same time, the 100 bud weight of the tea trees to which the organic compound fertilizer based on hair hydrolysis waste liquid provided by the present invention is applied (100 buds with 1 bud and 2 leaves are randomly picked, and the average value is calculated by weighing 3 times) is 67g, and the tea yield is also significantly improved.

[0110] In summary, the embodiments of the present invention provide an organic compound fertilizer based on hair hydrolysis waste liquid, and a preparation method and application thereof. The organic compound fertilizer provided by the present invention has the characteristics of low crude cellulose content, fast decomposition, and rich nutrients. When it is used in the cultivation of tea trees such as Mengding Ganlu, the content of the main quality components of the obtained tea (such as tea polyphenols, catechins, etc.) is significantly improved, which significantly improves the quality and yield of tea, and has wide practical application value.

[0111] Various embodiments of the present invention may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be understood as a rigid limitation on the scope of the present invention; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range.

[0112] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for preparing an organic compound fertilizer based on hair hydrolysis waste liquid, characterized in that: The method for preparing the organic compound fertilizer based on hair hydrolysis waste liquid comprises the following steps: The cellulose-containing agricultural waste and bentonite are mixed and ground, and then sieved to obtain a first mixed material; Subjecting the first mixed material to a gradient magnetic field heat treatment to obtain a second mixed material; The second mixed material and the hair hydrolysis waste liquid are stirred and mixed, and then a fermentation agent is added to perform fermentation to obtain a fermentation product; Drying and granulating the fermented product to obtain the organic compound fertilizer; The weight ratio of the cellulose-containing agricultural waste to the bentonite is (95-105):(13-19); The step of subjecting the first mixed material to gradient magnetic field heat treatment to obtain the second mixed material comprises the following process: The first mixture is added into a magnetic heating device, and a first magnetic field heat treatment is performed for 30 to 60 minutes under the condition that the magnetic flux coil current is 4 to 8A and the temperature is raised from room temperature to 140 to 180°C at a rate of 10 to 15°C / min; and a second magnetic field heat treatment is performed for 60 to 90 minutes under the condition that the magnetic flux coil current is 10 to 14A and the temperature is further raised to 300 to 350°C at a rate of 10 to 15°C / min, and the second mixture is obtained by cooling the device; The working condition parameters of the fermentation include: a fermentation temperature of 30-40° C. and a fermentation time of 4-8 days.

2. The method for preparing organic compound fertilizer based on hair hydrolysis waste liquid according to claim 1, characterized in that: The particle size of the first mixture is 100-200 meshes.

3. The method for preparing organic compound fertilizer based on hair hydrolysis waste liquid according to claim 2, characterized in that: The working condition parameters of the first magnetic field heat treatment include a flux coil current of 6A, a temperature of 160°C, and a time of 45 minutes; the working condition parameters of the second magnetic field heat treatment include a flux coil current of 12A, a temperature of 320°C, and a time of 80 minutes.

4. The method for preparing organic compound fertilizer based on hair hydrolysis waste liquid according to claim 1, characterized in that: Preparation method of hair hydrolysis waste liquid The process includes: The mother liquor after the cystine is extracted by hydrolyzing the hair with hydrochloric acid is filtered through a plate and frame filter and a nanofiltration membrane in sequence to obtain a filtrate; The filtrate is evaporated and concentrated and the pH is adjusted to 3.5-5.0 to obtain a hair hydrolysis waste liquid with a solid content of 10-20 wt %.

5. The method for preparing organic compound fertilizer based on hair hydrolysis waste liquid according to claim 1, characterized in that: The weight ratio of the second mixed material to the hair hydrolysis waste liquid is (1-2):1; the fermentation bacteria agent accounts for 1-5wt% of the total weight of the second mixed material and the hair hydrolysis waste liquid; and the fermentation bacteria agent is EM bacterial liquid.

6. An organic compound fertilizer based on hair hydrolysis waste liquid, characterized in that: The organic compound fertilizer based on hair hydrolysis waste liquid is prepared by the preparation method according to any one of claims 1 to 5.

7. An application of the organic compound fertilizer based on hair hydrolysis waste liquid according to claim 6 in tea planting, characterized in that: The varieties of tea include Mengding Ganlu.

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