CN114315460A

CN114315460A - Composite organic silicon fertilizer capable of accelerating biogas digestion and production method thereof

Info

Publication number: CN114315460A
Application number: CN202111516956.3A
Authority: CN
Inventors: 王先广; 王平; 肖玉如; 肖宗梁; 李冬梅; 谢宗茂; 李之锋; 丁能文; 王春香; 王方哲; 汤兴
Original assignee: 195 Geological Team Of Jiangxi Coalfield Geology Bureau; Jiangxi Mineral Resources Guarantee Service Center; Jiangxi University of Science and Technology
Current assignee: 195 Geological Team Of Jiangxi Coalfield Geology Bureau; Jiangxi Mineral Resources Guarantee Service Center; Jiangxi University of Science and Technology
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-04-12
Anticipated expiration: 2042-02-22
Also published as: CN114315460B

Abstract

The invention discloses a composite organic silicon fertilizer capable of accelerating biogas formation and a production method thereof, wherein the silicon fertilizer comprises the following raw materials: the humic silicon powder, the tourmaline powder and the organic mixed material are contained; wherein the organic mixed material comprises livestock manure and straws, and the proportion of the livestock manure to the straws is 1:0.5 to 5; the humus-containing silicon powder accounts for 0.5-5 wt% of the organic mixed material, and the tourmaline powder accounts for 0.1-0.5 wt% of the organic mixed material. The method comprises the steps of mixing desanded livestock and poultry manure and crushed straws in a ratio of 1:0.5-5 by weight of solid matters, uniformly mixing, adding silicon powder containing humus and tourmaline powder into the mixed material, uniformly mixing, placing the mixed material in a methane tank, and fermenting according to a basic methane fermentation process. The method provided by the invention can not only accelerate the biogas generation, but also produce an organic compound fertilizer with ecological function. After the tourmaline particles and the silicon powder containing humus are added, the methane generation rate is increased by 55.4-67.2% compared with that of a system without adding, the methane generation rate of biogas is increased by 46.9-51.3%, and the COD removal rate is increased by 19.1-34.5%.

Description

Composite organic silicon fertilizer capable of accelerating biogas digestion and production method thereof

Technical Field

The invention relates to the technical field of ecological agricultural production, in particular to a composite organic silicon fertilizer capable of accelerating biogas generation and a production method thereof.

Background

Silicon is an important nutrient element for plant composition, and is the fourth major element following nitrogen, phosphorus and potassium by international soil. The silicon fertilizer is beneficial to improving the photosynthesis and chlorophyll content of crops, straightening stems and leaves and promoting the accumulation of organic matters. The silicon fertilizer can increase the mechanical strength of the crop stem, improve the lodging resistance by over 85 percent, straighten the stem and facilitate close planting. The silicon fertilizer can improve the resistance of crops to diseases and insect pests, reduce the occurrence of various diseases and insect pests, and after the crops absorb silicon, silicified cells can be formed in plants, so that the cell walls of the surfaces of stems and leaves are thickened, the cuticle is increased, and a firm protective layer is formed, so that insects are not easy to bite and pathogenic bacteria are difficult to invade, and particularly, the silicon fertilizer has enhanced resistance to diseases and insect pests such as rice blast, banded sclerotial blight, bacterial leaf blight, stem rot, seedling rot, leaf spot, smut, sclerotinia, rust disease, powdery mildew, black spot, downy mildew, gray mold, bacterial wilt, blight and root rot, stem borer, rice planthopper, aphid, cotton bollworm, borer, whitefly, root nematode and the like. The silicon fertilizer can enhance the air permeability of crops in vivo, can prevent root system decay and premature senility, and has important effect on preventing and treating rice root rot. The silicon fertilizer can effectively adjust the opening and closing of the air holes of the leaves and inhibit water transpiration, and enhances the stress resistance of crops, such as drought resistance, dry hot air resistance, cold resistance, low temperature resistance and the like. The silicon fertilizer can enhance the pollen activity of melon and fruit crops, and the achievement rate can be obviously improved by applying the silicon fertilizer in the flowering period. The silicon fertilizer can reduce the fixation of the phosphate fertilizer in the soil, activate the phosphorus in the soil, promote the absorption of the root system to the phosphorus and improve the utilization rate of the phosphate fertilizer. The fertilizer strengthens the absorption and utilization of calcium and magnesium, can well regulate the balanced absorption of crops to different nutrients such as nitrogen, phosphorus, potassium and the like, and is called as a plant regulatory fertilizer. The silicon fertilizer is a health-care fertilizer, can activate beneficial microorganisms, improve soil, correct soil acidity, improve soil basicity, promote organic fertilizer decomposition, inhibit soil germs (for example, soil-borne germs such as mold can be accumulated when the plastic greenhouse is continuously planted for more than 3 years, the yield and quality of fruits and vegetables are seriously affected, and the application of the silicon fertilizer can effectively prevent and control the survival and propagation of the mold), resist continuous cropping and reduce heavy metal pollution. The silicon fertilizer is a quality fertilizer, can obviously improve the quality of agricultural products, effectively prevent fruit cracking, fruit shrinking and malformed fruits, increase the hardness of the fruits, ensure that the fruits have regular shapes, good coloring, good taste, good commodity, storage and transportation resistance and prolong the preservation period.

Tourmaline is a relatively common boron-containing silicate mineral. The reserves are abundant in China. The chemical formula of the tourmaline is XY3Z6Si6O18(BO3)3W4, and the tourmaline belongs to a trigonal system structurally. Wherein X represents a large cation, and mainly comprises K, Ca, Na and other elements. Tourmaline integrates the properties of various mineral functional materials due to the special structure thereof. Such as spontaneous polarization, piezoelectricity, pyroelectric property, far infrared radiation, and release of negative ions, and is widely used in the fields of industry, environmental protection, health care, etc.

In the actual popularization and application of the biogas, tourmaline composite methanogen material is artificially added to accelerate and stabilize the methane generation amount, which has become one of the important measures for newly building biogas digesters and large biogas facilities; however, in the process of applying the biogas, the treatment of the generated biogas residues consumes time and labor, and the invention provides the functional silicon organic fertilizer.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a composite organic silicon fertilizer capable of accelerating the biogas generation and a production method thereof so as to solve the problems in the technical background.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the composite organic silicon fertilizer capable of accelerating the biogas digestion is characterized by comprising the following raw materials: the humic silicon powder, the tourmaline powder and the organic mixed material are contained; wherein the organic mixed material comprises livestock manure and straws, and the proportion of the livestock manure to the straws is 1:0.5 to 5; the silicon powder containing humus accounts for 0.5-5 wt% of the organic mixed material, and the tourmaline powder accounts for 0.1-0.5 wt% of the organic mixed material.

In the above technical scheme, the humic acid-containing solutionThe silicon powder is obtained by screening silicon ore containing humic acid of plant silicon body deposited in ancient lake of Yanghu of , and SiO in the silicon powder containing humic acid₂The content of the humic substance is 87-90 wt%, the particle size is 300nm-5 mu m, and the humic substance content of the silicon powder is 8-12 wt%.

In the technical scheme, the particle size of the tourmaline powder is 300nm-20 μm.

The production method of the composite organic silicon fertilizer capable of accelerating the biogas digestion comprises the following steps:

s1, selecting a silicon source, wherein the silicon source is silicon powder containing humus, the particle size of the silicon powder containing humus is 300nm-5 mu m, and the content of humus in the silicon powder containing humus accounts for 8-12 wt%;

s2, selecting tourmaline, crushing the tourmaline, and obtaining tourmaline powder with the particle size of 300nm-20 μm after crushing;

s3, straw treatment: crushing the straws into crushed straws with the length of less than 1 cm;

s4, desanding the livestock and poultry manure, mixing the desanded livestock and poultry manure with crushed straws in a ratio of 1:0.5-5 by weight of solid matters to form a mixed material, uniformly mixing, adding the humus-containing silicon powder obtained in the step S1 and the tourmaline powder obtained in the step S2 into the mixed material, uniformly mixing, placing the mixed material in a methane tank, fermenting according to a basic process of methane fermentation, performing solid-liquid separation after the fermentation is finished, collecting methane after the separated liquid passes through a liquid anaerobic digester, and performing thermal drying on the solid obtained after the solid-liquid separation in the liquid anaerobic digester and solid methane slag in the methane tank to obtain the composite organic silicon fertilizer.

In the above technical scheme, in step S4, the livestock manure is one or a mixture of pig manure, cow manure, or sheep manure; when the livestock manure is pig manure, the pig manure and the straw form a mixed material according to the weight ratio of 1:0.5-5 of the solid matter; when the livestock manure is cow manure, the cow manure and the straws form a mixed material according to the weight ratio of 1:1 of the solid matters.

In the technical scheme, in the step S4, the mass of the silicon powder containing humus accounts for 0.5-5 wt% of the mixed material, and the mass of the tourmaline powder accounts for 0.1-0.5 wt% of the mixed material.

In the above technical solution, the biogas digester in step S4 is a non-stirring farmer type biogas digester, or a stirring large and medium type biogas digester.

Compared with the prior art, the invention has the beneficial effects that:

the method provided by the invention can not only improve the methane generation rate, but also produce an ecological organic compound fertilizer. The invention adopts silicon dioxide containing humus and tourmaline to play a positive role in increasing the yield of the biogas, and the effect of the produced compound fertilizer is good; after the tourmaline particles and the silicon powder containing humus are added, the methane generation rate is increased by 55.4-67.2% compared with that of a system without adding, the methane generation rate of biogas is increased by 46.9-51.3%, and the COD removal rate is increased by 19.1-34.5%.

Drawings

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is an SEM picture of tourmaline powder;

FIG. 3 is an SEM picture of silicon powder containing humus;

FIG. 4 is a graph showing the analysis of the particle size of humic acid-containing silicon ore in a silicon-implanted body, in which the abscissa is the particle size of the particles, the left ordinate is the accumulation, which indicates the cumulative percentage of particles not greater than a certain particle size, and the right ordinate is the differential distribution, which indicates the percentage of different particle sizes in the total volume;

FIG. 5 is an SEM picture of humic acid-containing silica ore in a silicon plant body.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

Example 1

The embodiment provides a composite organic silicon fertilizer capable of accelerating biogas digestion, which comprises the following raw materials: the humic silicon powder, the tourmaline powder and the organic mixed material are contained; wherein the organic mixed material comprises livestock manure and straws, and the proportion of the livestock manure to the straws is 1:0.5 to 5; the silicon powder containing humus accounts for 0.5-5 wt% of the organic mixed material, and the tourmaline powder accounts for 0.1-0.5 wt% of the organic mixed material.

In this example, the particle size of the tourmaline powder is 300nm-20 μm, as shown in fig. 2.

In the embodiment, the silicon powder containing humic acid is obtained by screening silicon ore containing humic acid of plant silicon bodies from Yanghu ancient deposition; the humic acid-containing silicon powder obtained after screening is shown in FIG. 3, in which SiO is contained in the humic acid-containing silicon powder₂The content is nearly 90 wt%, the grain diameter is 300nm-5 μm, and the humus content (the humus content refers to the content of carbon and hydrogen, generally calculated by the content of carbon) is about 10 wt%. Further, the silicon powder containing humic acid contains SiO₂The content of the humic substance is 87-90 wt%, and the content of humic in the silicon powder containing humic substance is 8-12 wt%.

Wherein, the silicon implant body deposited in Poyang lake ancient comprises humic acid silicon ore, as shown in figure 5, and the chemical components are as follows: SiO 2₂ 77.01-80.54％、Al₂O₃ 3.03-5.35％、Fe₂O₃1.08-3.73 percent of CaO, 0.07-0.69 percent of CaO, 11.96-16.13 percent of LOI (loss on ignition), and TiO₂About 0.69%; the mineral composition is about: 8% of gangue, 3% of clay, 0.5% of pyrite, 0.5% of goethite, 10% of humic substance and SiO₂78 percent. During geological exploration, a Yanghu ancient sedimentary silicon planting body mine containing humic acid silicon ore is randomly selected, and the exploration of a drill bit shows that the ore body has stable SiO regardless of step and depth₂Ore body, SiO with particle size of 300nm-5um exists in different depths₂To explain the silicon implantThe silicon ore resources are rich and stable, humic acid-containing silicon ore of a certain depth is selected for laser particle size analysis, and the particle size distribution is shown in figure 4.

The specific screening process of the silicon powder containing humic acid comprises the following steps:

firstly, coarse impurity removal:

(1) adding water and carrying out gyratory crushing: mixing newly-mined silicon-on-plant ore containing humic acid with water, and crushing in a gyratory crusher;

(2) primary mesh screen separation: screening gravel larger than 5mm by using a vibrating screen;

secondly, fine impurity removal:

(3) primary scrubbing and stripping: placing the silicon-implanted ore separated from 5mm gravels into a scrubbing machine for primary scrubbing and stripping, wherein the primary scrubbing time is 10-30 min;

(4) secondary mesh screen separation: screening out substances larger than 1mm by using a vibrating screen;

thirdly, removing magnetic substances:

(5) magnetic separation and iron removal: removing iron from the crude product obtained in the step (4) by adopting a high-gradient magnetic separator to obtain feed liquid containing humic acid silicon; wherein the magnetic field intensity of the magnetic separation is more than 6000 gauss;

fourthly, dewatering and drying:

(6) water separation: feeding the feed liquid containing silicon humate into a solid-liquid separation process for solid-liquid separation to obtain silicon humate;

(7) and (3) drying: drying at 120 ℃ to obtain silicon containing humic acid, wherein the silicon containing humic acid is in a hardened state or an agglomerated state;

wherein, the dewatering and drying can be carried out by adopting a centrifugal drying mode or a drying mode after solid-liquid separation of a mud press, and the like.

Fifthly, dry grinding:

(8) and (3) dry crushing: and (3) the hardened silicon containing humic acid after drying is serious, and the silicon containing humic acid is obtained by adopting dry crushing and separation. Wherein, the silicon powder containing humic acid contains 8-12 wt% of carbon (or humic substance), and SiO₂87-90 wt%, and the rest may be Al₂O₃，Fe₂O₃Water, organic volatile matters and the like;

referring to fig. 1, the embodiment also provides a production method of a composite organic silicon fertilizer capable of accelerating biogas digestion, which comprises the following steps:

s4, desanding the livestock and poultry manure, mixing the desanded livestock and poultry manure with crushed straws in a ratio of 1:0.5-5 by weight of solid matters to form a mixed material, uniformly mixing, adding the humus-containing silicon powder obtained in the step S1 and the tourmaline powder obtained in the step S2 into the mixed material, uniformly mixing, placing the mixed material into a methane tank, fermenting according to a basic process of methane fermentation (including aerobic fermentation and hydrolytic acidification), performing solid-liquid separation after the fermentation is finished, collecting methane after the separated liquid passes through a liquid anaerobic digester (an absolute sealed tank), and performing thermal drying on the solid obtained after the solid-liquid separation in the liquid anaerobic digester and solid methane slag in the methane tank to obtain the composite organic silicon fertilizer.

And (5) the biogas collected in the step (S4) passes through a desulfurizing tower and is stored in a gas storage cabinet.

The compound organic silicon fertilizer obtained in the step S4 can also be mixed with agricultural fertilizer, granulated, dried at low temperature and screened for bagging. The fertilizer with different silicon fertilizer contents can be obtained by different proportions of the compound organic silicon fertilizer and the agricultural fertilizer, and the proportion of the compound organic silicon fertilizer and the agricultural fertilizer can be specifically carried out according to the needs of the silicon fertilizer.

In step S4, the feces of livestock and poultry is one or more of pig feces, cow feces, and sheep feces. The livestock manure is pig manure, and the pig manure and the straw form a mixed material according to the weight ratio of 1:0.5-5 of the solid matter. The livestock manure is cow manure, and the cow manure and the straws form a mixed material according to the weight ratio of 1:1 of the solid matter.

Comparative example 1

This example is similar to example 1, except that: silicon powder containing humic acid is replaced by silicon dioxide.

Comparative example 2

This example is similar to example 1, except that: the silicon powder containing humic acid is replaced by sodium silicate or potassium silicate.

Comparative example 3

This example is similar to example 1, except that: and removing the silicon powder containing humic acid.

Comparative example 4

This example is similar to example 1, except that: removing the silicon powder containing humic acid and tourmaline powder.

Comparative example 5

This example is similar to example 1, except that: removing tourmaline powder.

Comparative examples 1-5 were produced in a similar manner to example 1, except that the formulations were different.

Application examples

Application example 1: rural household type pig manure biogas fermentation application

The experiment takes the pig manure methane tank of an individual farmer as an application example, the farmer type methane tank is mostly a single-stage methane tank, has no stirring and semi-dry mode, and belongs to batch fermentation. Respectively setting 5 groups of fermentation experiments, wherein the materials added in the biogas digester are the high biogas yield compound organic silicon fertilizer formulas provided by the example 1 and the comparative examples 1-4, wherein the example 1 is used as an experimental group, the comparative examples 1-3 are used as a control group, and the comparative example 4 is used as a blank group; the biogas generation rate, the methane generation rate and the COD removal rate of the 5 groups of fermentation experiments are collected, the experimental group and the control group are compared with the blank group, the biogas generation rate improvement rate, the methane generation rate improvement rate and the COD removal rate improvement rate of the experimental group and the control group are counted, and specific statistical data are shown in table 1.

Taking the formulation of example 1 as an example: the single-stage methane tank is processed by the following steps that tourmaline is crushed into 300nm-20 mu m, the straws are crushed into straws with the length of less than 1cm, and the raw materials are pig manure: 1, straw 1: 3-5 (calculated by the weight of solid matters), adding 30kg of humic silicon powder and 2kg of tourmaline powder (the mass of the humic silicon powder is 0.5-5 wt% of the mixed material, and the mass of the tourmaline powder is 0.1-0.5 wt% of the mixed material) into each cubic of the mixed material, uniformly mixing, and then performing the biogas fermentation according to the basic flow. And after the fermentation is finished, carrying out solid-liquid separation, collecting the biogas after the separated liquid passes through a liquid anaerobic digestion tank, and carrying out thermal drying on the solid after the solid-liquid separation in the liquid anaerobic digestion tank and the solid biogas residues in the biogas digester to obtain the composite organic silicon fertilizer.

Taking the formulation of comparative example 1 as an example: the single-stage methane tank is processed by the following steps that tourmaline is crushed into 300nm-20 mu m, the straws are crushed into straws with the length of less than 1cm, and the raw materials are pig manure: 1, straw 1: 3-5 (calculated by the weight of solid matters) of the mixture, adding 30kg of silicon dioxide and 2kg of tourmaline powder (the mass of the silicon dioxide is 0.5-5 wt% of the mixture, and the mass of the tourmaline powder is 0.1-0.5 wt% of the mixture) into each cubic mixture, uniformly mixing, and then performing the biogas fermentation according to the basic flow. And after the fermentation is finished, carrying out solid-liquid separation, collecting the biogas after the separated liquid passes through a liquid anaerobic digestion tank, and carrying out thermal drying on the solid after the solid-liquid separation in the liquid anaerobic digestion tank and the solid biogas residues in the biogas digester to obtain the composite organic silicon fertilizer.

Taking the formulation of comparative example 2 as an example: the single-stage methane tank is processed by the following steps that tourmaline is crushed into 300nm-20 mu m, the straws are crushed into straws with the length of less than 1cm, and the raw materials are pig manure: 1, straw 1: 3-5 (calculated by the weight of solid matters) of the mixture, adding 30kg of sodium silicate and 2kg of tourmaline powder (the mass of the sodium silicate is 0.5-5 wt% of the mixture, and the mass of the tourmaline powder is 0.1-0.5 wt% of the mixture) into each cubic mixture, uniformly mixing, and then performing the biogas fermentation according to the basic flow. And after the fermentation is finished, carrying out solid-liquid separation, collecting the biogas after the separated liquid passes through a liquid anaerobic digestion tank, and carrying out thermal drying on the solid after the solid-liquid separation in the liquid anaerobic digestion tank and the solid biogas residues in the biogas digester to obtain the composite organic silicon fertilizer.

Taking the formulation of comparative example 3 as an example: the single-stage methane tank is processed by the following steps that tourmaline is crushed into 300nm-20 mu m, the straws are crushed into straws with the length of less than 1cm, and the raw materials are pig manure: 1, straw 1: 3-5 (calculated by the weight of solid matters), adding 2kg of tourmaline powder (the mass of the tourmaline powder is 0.1-0.5 wt% of the mixed material) into each cubic of the mixed material, uniformly mixing, and then performing biogas fermentation according to a basic flow. And after the fermentation is finished, carrying out solid-liquid separation, collecting the biogas after the separated liquid passes through a liquid anaerobic digestion tank, and carrying out thermal drying on the solid after the solid-liquid separation in the liquid anaerobic digestion tank and the solid biogas residues in the biogas digester to obtain the composite organic silicon fertilizer.

Taking the formulation of comparative example 4 as an example: the single-stage methane tank is processed by the following steps that tourmaline is crushed into 300nm-20 mu m, the straws are crushed into straws with the length of less than 1cm, and the raw materials are pig manure: 1, straw 1: 3-5 (calculated by the weight of solid matters), and then performing the biogas fermentation according to the basic flow. And after the fermentation is finished, carrying out solid-liquid separation, collecting the biogas after the separated liquid passes through a liquid anaerobic digestion tank, and carrying out thermal drying on the solid after the solid-liquid separation in the liquid anaerobic digestion tank and the solid biogas residues in the biogas digester to obtain the composite organic silicon fertilizer.

TABLE 1

From table 1, it can be seen that: compared with the comparative examples 1-3, the artificial addition of tourmaline powder can improve the methane generation rate and the methane generation rate; however, compared with comparative examples 1 to 3, the improvement rates of the biogas production rate, the methane production rate and the COD removal rate of example 1 were significantly improved, which indicates that the synergistic effect of the silicon powder containing humic substances and tourmaline improves the biogas yield.

In the invention, the addition of tourmaline can promote the fermentation rate of yeast, so that the reaction efficiency of the process is improved by 50-100%; the principle is as follows: tourmaline has growth promoting effect on large bacteria (lactobacillus, yeast, etc.); the silicon powder containing humus has the promotion effect on the growth of microorganisms and the catalytic effect on the degradation reaction of organic matters;

in the embodiment, the tourmaline particles with the particle size of 300nm-20 um are mixed with livestock manure such as cow manure, pig manure and sheep manure and straws, and the mixture is placed in a methane acidification fermentation tank and a methanation tank, so that tourmaline and slurry are in a sufficient contact and action state, the methane fermentation which takes the straws and the livestock manure such as cow manure, pig manure and sheep manure as raw materials can be promoted, the effect is good, the methane-producing bacteria in the methane fermentation process can be acted immediately, the system methane digestion can be accelerated by adding the material in the fermentation process, and the removal rate of COD, TS and VS is also obviously improved. In the liquefaction stage of the biogas, the tourmaline can promote the growth of bacteria such as saccharomycetes, lactic acid bacteria, bacillus subtilis and the like, is beneficial to the generation of cellulase, amylase, protease and lipase, and carries out in-vitro enzymolysis on organic substances; in the acid-producing stage, the substances in the first stage are continuously decomposed into small molecular acid compounds while acid-producing bacteria are further promoted to grow; in the stage of methane production, the tourmaline can promote the propagation of methanogenic bacteria and catalyze the biogas generation of small molecular acidic compounds, and the tourmaline also has a large amount of electric protons, so that the conversion rate of the biogas can be obviously improved.

Application example 2: fermentation application of large and medium-sized cow dung methane tank

The experiment takes large and medium-sized cow dung methane tanks as an application example, the large and medium-sized cow dung methane tanks are mostly multistage methane tanks, and are of a stirring type or a back flushing type, and belong to continuous fermentation. The tourmaline can be crushed into 500 mu m-20um by a multistage methane tank method, the straw is crushed into straw with the length of less than 1cm, and the raw materials are cow dung: 1, straw 1: 0.5-3 (calculated by weight of solid matters) of mixed materials are formed, 30kg of humic silicon powder and 2kg of tourmaline powder (the mass of the humic silicon powder is 0.5-5 wt% of the mixed materials, and the mass of the tourmaline powder is 0.1-0.5 wt% of the mixed materials) are added into each cubic mixed material, and the mixture is uniformly mixed and placed in a methane tank, and then the fermentation is carried out according to the basic flow of methane fermentation. After the system is added with the humus silicon powder and the tourmaline powder, the methane production rate is increased by 67.2 percent, the methane production rate of the biogas is increased by 51.3 percent, and the COD removal rate is increased by 34.5 percent compared with the system without adding the humus silicon powder and the tourmaline powder.

Application example 3

The rice special silicon fertilizer obtained in example 1 and comparative examples 1-5 is applied to rice experiments.

In a certain rice planting base in Fengcheng of Jiangxi province, the planting process is carried out according to the conventional planting treatment (because of perennial rice planting, SiO in soil₂Content is lower than 600g/kg on average, and silicon fertilizer is needed to be implemented), 7 areas are set for experiment, wherein 6 groups are taken as experiment groups: the special silicon fertilizer for the rice obtained in the example 1 and the comparative examples 1 to 5 is broadcast; the control group is listed: broadcasting marketThe prior agricultural fertilizer on the field. Through experimental observation, the invention adopts original soil SiO₂Content (g/kg), lodging index (%), husk SiO₂The relationship of the present invention was evaluated on a content (g/kg) and yield (kg/acre) data field. Wherein, the larger the lodging index is, the easier the stalk is to lodge, and the lodging index 200 is taken as the threshold value of lodging resistance. The fertilizer is applied at 350 Kg/mu. Specific data are shown in table 2:

TABLE 2

From table 2, it can be seen that: compared with comparative examples 1-2, in example 1, the rice has good growth vigor, strong lodging resistance and high yield; the natural humic acid-containing silicon powder is adopted, and is not comparable to common silicon dioxide or sodium silicate and the like; SiO in natural silicon powder containing humic acid₂The content is nearly 90 wt%, the fertilizer is rich in hydroxyl water, the particle size is 300nm-5 mu m, the content of humus is about 10 wt%, and the fertilizer is effective silicon particles which can be used by rice and can meet the requirement of crops on silicon for a long time. Compared with the existing silicon fertilizer which has large granularity and is difficult to dissolve in a rice field and cannot be fully absorbed by rice, the silicon fertilizer has small granularity within the range of 300nm-5 mu m, contains rich hydroxyl on the surface, is easy to dissolve in the rice field after being broadcast and sown, can be effectively absorbed by the rice and has good effect.

Compared with the comparative examples 3-5, the rice in the example 1 has good growth vigor, strong lodging resistance and high yield, which shows that the silicon powder containing humic substances and the tourmaline act on the rice synergistically. In this embodiment, the function of tourmaline is: the root hairs of the plants can be massaged, which is beneficial to the continuous development and work of the root hairs; small molecular group hydration is carried out on water molecular groups of the soil, which is beneficial to root system absorption; the fertilizer in the soil is activated and the organic fertilizer is cured, so that the absorption of the root system is facilitated; activating chemical trace elements in the soil, and benefiting the absorption of root systems; it can inactivate harmful bacteria and protect beneficial bacteria from breeding; is beneficial to the transformation of humus in soil; beneficial to the formation of microorganisms in the soil and the propagation of coelenterates and arthropods in the soil; is beneficial to the degradation of ammonia nitrogen compounds and the absorption of root systems; is beneficial to the degradation of pesticide residues in soil and the degradation of novel pesticides; improving the air environment of soil and soil surface, and benefiting the growth of plants.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The composite organic silicon fertilizer capable of accelerating the biogas digestion is characterized by comprising the following raw materials: the humic silicon powder, the tourmaline powder and the organic mixed material are contained; wherein the organic mixed material comprises livestock manure and straws, and the proportion of the livestock manure to the straws is 1:0.5 to 5; the silicon powder containing humus accounts for 0.5-5 wt% of the organic mixed material, and the tourmaline powder accounts for 0.1-0.5 wt% of the organic mixed material.

2. The composite organic-silicon fertilizer capable of accelerating biogas digestion according to claim 1, wherein the silicon powder containing humic acid is obtained by screening silicon ore containing humic acid from plant silicon bodies deposited in the ancient lake of Yanghu, and SiO in the silicon powder containing humic acid₂The content of the humic substance is 87-90 wt%, the particle size is 300nm-5 mu m, and the humic substance content of the silicon powder is 8-12 wt%.

3. The composite organic silicon fertilizer capable of accelerating biogas digestion according to claim 2, wherein the particle size of the tourmaline powder is 300nm-20 μm.

4. The production method of the composite organic silicon fertilizer capable of accelerating the biogas digestion based on the claim 3 is characterized by comprising the following steps:

5. The method for producing the composite organic silicon fertilizer capable of accelerating the biogas digestion according to claim 4, wherein in step S4, the livestock manure is one or a mixture of pig manure, cow manure and sheep manure;

when the livestock manure is pig manure, the pig manure and the straw form a mixed material according to the weight ratio of 1:0.5-5 of the solid matter; when the livestock manure is cow manure, the cow manure and the straws form a mixed material according to the weight ratio of 1:1 of the solid matters.

6. The method for producing the composite organic silicon fertilizer capable of accelerating biogas digestion according to claim 4, wherein in the step S4, the mass of the humus-containing silicon powder is 0.5-5 wt% of the mixed material, and the mass of the tourmaline powder is 0.1-0.5 wt% of the mixed material.

7. The method for producing the composite organic silicon fertilizer capable of accelerating biogas digestion as claimed in claim 4, wherein the biogas digester in the step S4 is a non-stirring farmer type biogas digester or a stirring large and medium type biogas digester.