Low-energy-consumption green preparation process of glycine fermentation liquor fertilizer

Abstract

The invention discloses a low-energy-consumption green preparation process of a glycine fermentation broth fertilizer, and relates to the technical field of fertilizer production, the low-energy-consumption green preparation process comprises the following specific steps: step 1, placing a glycine fermentation broth in a fermentation container, and fermenting by adopting a low-temperature long-time fermentation mode, the method has the advantages that the glycine fermentation broth from different sources is preliminarily mixed according to the proportion, then the humic acid and the seaweed extract which are subjected to high-temperature sterilization treatment are gradually added, all the components are fully fused in the mixing process, in addition, the preliminarily mixed glycine fermentation broth from different sources needs to be pretreated before being mixed, and the mixing effect is good. And impurities and suspended matters are removed, and the added natural organic substances humic acid and seaweed extract are subjected to high-temperature sterilization treatment, so that the nutritional ingredients of the fertilizer are more balanced and stable, the nutritional requirements of different plants in different growth stages can be better met, the fertilizer efficiency of the fertilizer is improved, the growth of the plants is promoted, and higher benefits are brought to agricultural production.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizer production, in particular to a green preparation process of glycine fermentation liquid fertilizer with low energy consumption. Background Art

[0002] Glycine is an important amino acid and is widely used in agriculture, medicine, food and other fields. As a new type of fertilizer, glycine fermentation liquid fertilizer has the advantages of rich nutrition, easy absorption, and green environmental protection, and has gradually attracted people's attention. With the growth of the global population and the development of agriculture, the demand for fertilizers is increasing. Traditional fertilizer production processes often have problems such as high energy consumption, low resource utilization, and serious environmental pollution, which do not meet the requirements of sustainable development. Therefore, it is of great practical significance to develop a low-energy consumption, green and environmentally friendly glycine fermentation liquid fertilizer preparation process; The existing green preparation process of glycine fermentation liquid fertilizer has certain technical defects. First, the existing technology often ignores the utilization of by-products, resulting in resource waste and environmental pollution, increasing production costs, and not meeting the requirements of sustainable development. Secondly, in the mixing process, the existing technology is difficult to make the fertilizer nutrients balanced and stable, and cannot meet the nutritional needs of different plants at different growth stages. Furthermore, the existing technology cannot dynamically adjust the process in real time according to the fermentation liquid parameters, resulting in poor process adaptability, high scrap rate and energy waste. For this reason, we propose a low-energy green preparation process of glycine fermentation liquid fertilizer. Summary of the invention

[0003] The purpose of the present invention is to provide a green preparation process of glycine fermentation liquid fertilizer with low energy consumption.

[0004] In order to solve the problems raised in the above background technology, the present invention provides the following technical solution: a low-energy consumption green preparation process of glycine fermentation liquid fertilizer, the green preparation process of liquid fertilizer comprises the following specific steps: Step 1: Place the glycine fermentation liquid in a fermentation container, and ferment it in a low-temperature and long-term fermentation manner, control the temperature at 20°C-25°C, and ferment for 72 hours. Use the fluctuation of natural ambient temperature to assist fermentation and reduce additional heating energy consumption. During the fermentation process, stir at a speed of 30r / min to ensure that the fermentation liquid is fully mixed; Step 2: Collect the byproducts of the fermentation, carbon dioxide and waste residues. The carbon dioxide generated during the fermentation process is collected by a carbon dioxide collection device and used to adjust the pH of the fermentation liquid to stabilize its pH value at 6.5-7.5. The waste residues remaining after separation and purification are treated. After crushing and screening, the useful components therein are extracted with a weak alkaline potassium hydroxide solution with a concentration of 5%-8%. The useful components in the waste residues include incompletely fermented organic matter and trace elements, which are re-introduced in proportion in the subsequent fermentation, and the proportion is 5%-8% of the waste residue extract to the total fermentation liquid mass; Step 3: After preliminary mixing, natural organic matter is added by gradient mixing. First, glycine fermentation broths from different sources are preliminarily mixed in a ratio of 3:2, and then pretreated humic acid and seaweed extract are gradually added. The amount of humic acid added is 10%-15% of the total mass of the fermentation broth, and the amount of seaweed extract added is 5%-10% of the total mass of the fermentation broth. During the mixing process, the stirring speed is controlled at 45r / min and the temperature is controlled at 30°C-35°C to fully blend the components. Step 4: dynamically adjust the preparation process according to the real-time monitoring parameters, monitor the pH, concentration, and temperature parameters of the fermentation liquid in real time, and start the corresponding adjustment device if the parameters of the fermentation liquid deviate from the set range to ensure the quality of the fermentation liquid and the smooth progress of the subsequent process; Step 5, separation, purification and concentration are carried out. The separation and purification adopts a combination of physical sedimentation and mild centrifugation. The concentration adopts a vacuum and low-temperature concentration process. A precipitant needs to be added during the physical sedimentation process. The sedimentation time is 2 hours, the temperature is controlled at 25°C-30°C, the speed of mild centrifugation is 1500r / min, and the centrifugation time is 30min. In the vacuum and low-temperature concentration process, the pressure is controlled at 0.05MPa-0.08MPa and the temperature is 40°C-50°C. Finally, the concentrated fermentation liquid is further processed and formulated to complete the preparation of liquid fertilizer.

[0005] As a further solution of the present invention: in the step 1, during the low-temperature and long-term fermentation process, the fermentation container is made of stainless steel, the inner wall needs to be treated with anti-corrosion and have thermal insulation properties, the temperature changes are continuously monitored during the fermentation process, and the temperature is maintained stable by adjusting the ventilation volume. When the temperature is lower than 20°C, the ventilation volume is reduced, and when the temperature is higher than 25°C, the ventilation volume is increased to ensure that the fermentation is carried out within a stable temperature range and reduce energy consumption.

[0006] As a further solution of the present invention: in the step 2, the device for collecting carbon dioxide is made of a pressure-resistant and corrosion-resistant plastic material, which needs to have good sealing and corrosion resistance. During the waste residue treatment process, the particle size of the crushed waste residue is controlled at 0.1mm-0.5mm, and a sieve with a specific aperture is used for screening, and the aperture of the sieve is 0.3mm. The treated waste residue extract is evenly added in the subsequent fermentation to ensure the stable quality of the fermentation liquid.

[0007] As a further solution of the present invention: in the step three, in the gradient mixing process, the initially mixed glycine fermentation broths from different sources need to be pretreated before mixing to remove impurities and suspended matter, and the added natural organic matter humic acid and seaweed extract are sterilized at high temperature at 80°C-90°C for 30 minutes.

[0008] As a further solution of the present invention: in step 4, when the pH deviates from the set range of ±0.2, the acid-base adjustment device is automatically started, and when the concentration changes by more than ±5%, the concentration process parameters are adjusted to ensure the adaptability and stability of the process and reduce the scrap rate and energy waste caused by parameter fluctuations.

[0009] As a further solution of the present invention: in the step 5, the precipitant used in the physical sedimentation process is an environmentally friendly high molecular polymer, and its usage is 3%-5% of the total mass of the fermentation liquid. The separated fermentation liquid is further processed to remove residual precipitant and impurities.

[0010] As a further solution of the present invention: in the step five, the concentration equipment selects a double-layer glass container, the inner glass is anti-fog treated, and the outer glass is selected from a material with heat-insulating properties. During the concentration process, the temperature is maintained stable at 40°C-50°C by a circulating water cooling device. When the solid content of the fermentation liquid reaches 30%-35%, a filtering device is used to filter to remove residual tiny impurities to ensure the quality of the concentrated fermentation liquid.

[0011] As a further solution of the present invention: in the step 5, when the concentrated fermentation liquid is further processed and formulated, the fermentation liquid is first transferred to a stirring container, slowly stirred at a speed of 20r / min for 30min, and then a compound nutrient regulator containing phosphorus and potassium elements is added to ensure a balanced ratio of nutrients in the fertilizer.

[0012] As a further solution of the present invention: in the step five, after adding the nutritional regulator, it is necessary to use a pH detection instrument to monitor the pH value. When the pH value is not within the range of 6.5-7.5, weakly acidic and weakly alkaline environmental regulators are added for fine-tuning. The weakly acidic regulator is citric acid with a concentration of 2%-3%, and the weakly alkaline regulator is sodium bicarbonate with a concentration of 3%-4%, so that it is stabilized at 6.5-7.5.

[0013] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are: 1. The present invention preliminarily mixes glycine fermentation broths from different sources in proportion, and then gradually adds humic acid and seaweed extract that have been sterilized at high temperature. During the mixing process, the components are fully integrated. In addition, the preliminarily mixed glycine fermentation broths from different sources need to be pretreated before mixing to remove impurities and suspended matter. The added natural organic matter humic acid and seaweed extract are sterilized at high temperature, which makes the fertilizer nutrient components more balanced and stable, can better meet the nutritional needs of different plants at different growth stages, improve fertilizer efficiency, promote plant growth, and bring higher benefits to agricultural production; 2. The present invention collects carbon dioxide produced by fermentation and uses it to adjust the pH value of the fermentation liquid. The fermentation container is made of stainless steel, and the inner wall is treated with anti-corrosion and has heat preservation performance. During the fermentation process, the temperature change is continuously monitored, and the temperature is maintained stable by adjusting the ventilation volume. At the same time, carbon dioxide is collected to adjust the pH value, which reduces the use of chemical reagents, reduces costs and is more environmentally friendly. At the same time, the waste residue remaining after separation and purification is treated to extract the unfermented organic matter and trace elements and other useful components, and then re-introduce them into fermentation according to the prescribed ratio. During the waste residue treatment process, the treated waste residue extract is evenly added in the subsequent fermentation, which reduces the consumption of raw materials and improves the resource utilization rate. This recycling process conforms to the green preparation concept, reduces waste emissions, and helps promote sustainable development. 3. The present invention dynamically adjusts the preparation process by real-time monitoring of the fermentation liquid parameters. When the pH of the fermentation liquid deviates from the set range, the acid-base regulating device is started. When the concentration change exceeds the set range, the concentration process parameters are adjusted. The concentration equipment selects a double-layer glass container, the inner glass is anti-fog treated, and the outer glass has heat insulation performance. During the concentration process, the temperature is maintained stable by a circulating water cooling device. When the solid content of the fermentation liquid reaches a certain range, a filtering device is used for filtering. These measures effectively ensure the quality of the fermentation liquid and the smooth progress of subsequent processes, reduce the scrap rate and energy waste caused by parameter fluctuations, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the method steps in an embodiment of the present invention; Figure 2 It is a schematic diagram for comparing embodiments in the embodiments of the present invention. DETAILED DESCRIPTION

[0015] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0016] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0017] Please see attached Figure 1 -Attached Figure 2 The present invention provides a low-energy consumption green preparation process of glycine fermentation liquid fertilizer, and the green preparation process of liquid fertilizer comprises the following specific steps: Step 1: Place the glycine fermentation liquid in a fermentation container, and ferment it in a low-temperature and long-term fermentation manner, control the temperature at 20°C-25°C, and ferment for 72 hours. Use the fluctuation of natural ambient temperature to assist fermentation and reduce additional heating energy consumption. During the fermentation process, stir at a speed of 30r / min to ensure that the fermentation liquid is fully mixed; Step 2: Collect the byproducts of the fermentation, carbon dioxide and waste residues. The carbon dioxide generated during the fermentation process is collected by a carbon dioxide collection device and used to adjust the pH of the fermentation liquid to stabilize its pH value at 6.5-7.5. The waste residues remaining after separation and purification are treated. After crushing and screening, the useful components therein are extracted with a weak alkaline potassium hydroxide solution with a concentration of 5%-8%. The useful components in the waste residues include incompletely fermented organic matter and trace elements, which are re-introduced in proportion in the subsequent fermentation, and the proportion is 5%-8% of the waste residue extract to the total fermentation liquid mass; Step 3: After preliminary mixing, natural organic matter is added by gradient mixing. First, glycine fermentation broths from different sources are preliminarily mixed in a ratio of 3:2, and then pretreated humic acid and seaweed extract are gradually added. The amount of humic acid added is 10%-15% of the total mass of the fermentation broth, and the amount of seaweed extract added is 5%-10% of the total mass of the fermentation broth. During the mixing process, the stirring speed is controlled at 45r / min and the temperature is controlled at 30°C-35°C to fully blend the components. Step 4: dynamically adjust the preparation process according to the real-time monitoring parameters, monitor the pH, concentration, and temperature parameters of the fermentation liquid in real time, and start the corresponding adjustment device if the parameters of the fermentation liquid deviate from the set range to ensure the quality of the fermentation liquid and the smooth progress of the subsequent process; Step 5, separation, purification and concentration are carried out. The separation and purification adopts a combination of physical sedimentation and mild centrifugation. The concentration adopts a vacuum and low-temperature concentration process. A precipitant needs to be added during the physical sedimentation process. The sedimentation time is 2 hours, the temperature is controlled at 25°C-30°C, the speed of mild centrifugation is 1500r / min, and the centrifugation time is 30min. In the vacuum and low-temperature concentration process, the pressure is controlled at 0.05MPa-0.08MPa and the temperature is 40°C-50°C. Finally, the concentrated fermentation liquid is further processed and formulated to complete the preparation of liquid fertilizer.

[0018] In one embodiment of the present invention: in step one, during the low-temperature and long-term fermentation process, the fermentation container is made of stainless steel, the inner wall needs to be treated with anti-corrosion and have thermal insulation properties, the temperature changes are continuously monitored during the fermentation process, and the temperature is maintained stable by adjusting the ventilation volume. When the temperature is below 20°C, the ventilation volume is reduced, and when the temperature is above 25°C, the ventilation volume is increased to ensure that the fermentation is carried out within a stable temperature range and reduce energy consumption.

[0019] In one embodiment of the present invention: in step 2, the device for collecting carbon dioxide is made of a pressure-resistant and corrosion-resistant plastic material, which needs to have good sealing and corrosion resistance. During the waste residue treatment process, the particle size of the crushed waste residue is controlled at 0.1mm-0.5mm, and a sieve with a specific aperture is used for screening, and the aperture of the sieve is 0.3mm. The treated waste residue extract is evenly added in the subsequent fermentation to ensure the stable quality of the fermentation liquid.

[0020] In one embodiment of the present invention: In step three, during the gradient mixing process, the initially mixed glycine fermentation broths from different sources need to be pretreated before mixing to remove impurities and suspended matter, and the added natural organic matter humic acid and seaweed extract are sterilized at high temperature at 80°C-90°C for 30 minutes.

[0021] In one embodiment of the present invention: in step four, when the pH deviates from the set range of ±0.2, the acid-base adjustment device is automatically started, and when the concentration change exceeds ±5%, the concentration process parameters are adjusted to ensure the adaptability and stability of the process and reduce the scrap rate and energy waste caused by parameter fluctuations.

[0022] In one embodiment of the present invention: in step five, the precipitant used in the physical sedimentation process is an environmentally friendly high molecular polymer, and its usage is 3%-5% of the total mass of the fermentation liquid. The separated fermentation liquid is further processed to remove residual precipitant and impurities.

[0023] In one embodiment of the present invention: in step five, the concentration equipment selects a double-layer glass container, the inner glass is anti-fog treated, and the outer glass is selected from a material with heat-insulating properties. During the concentration process, the temperature is maintained stable at 40°C-50°C by a circulating water cooling device. When the solid content of the fermentation liquid reaches 30%-35%, a filtering device is used to filter to remove residual tiny impurities to ensure the quality of the concentrated fermentation liquid.

[0024] In one embodiment of the present invention: In step five, when the concentrated fermentation liquid is further processed and formulated, the fermentation liquid is first transferred to a stirring container, slowly stirred at a speed of 20r / min for 30min, and then a compound nutrient regulator containing phosphorus and potassium elements is added to ensure a balanced ratio of nutrients in the fertilizer.

[0025] In one embodiment of the present invention: in step five, after adding the nutritional regulator, it is necessary to use a pH detection instrument to monitor the pH value. When the pH value is not within the range of 6.5-7.5, weakly acidic and weakly alkaline environmental regulators are added for fine-tuning. The weakly acidic regulator is citric acid with a concentration of 2%-3%, and the weakly alkaline regulator is sodium bicarbonate with a concentration of 3%-4%, so that it is stabilized at 6.5-7.5.

[0026] Example 1, please refer to the attached Figure 1 -Attached Figure 2First, 1000 liters of glycine fermentation liquid is placed in a stainless steel fermentation container. The inner wall of the container has been specially treated with anti-corrosion and has good thermal insulation performance. The fermentation process adopts a low-temperature and long-term fermentation method, and the temperature is strictly controlled at 25°C for 72 hours. During this process, the fluctuation of natural ambient temperature is used to assist fermentation to reduce additional heating energy consumption. At the same time, during the fermentation process, it is slowly stirred at a speed of 30r / min to ensure that the fermentation liquid is fully mixed, providing good conditions for the smooth progress of fermentation. Then, the by-products produced by the fermentation are fully collected, and the carbon dioxide produced during the fermentation process is collected through a gas collection tank with a sealing valve and a pressure-resistant pipeline. The collection tank is made of corrosion-resistant stainless steel to ensure the safety and stability of the collection process. The collected carbon dioxide is used to adjust the pH of the fermentation liquid so that its pH value is stable within the ideal range of 6.5-7.5. The waste residue remaining after separation and purification is carefully treated. The waste residue is first crushed to control the particle size. The particle size of the residue was adjusted to within the range of 0.1 mm to 0.5 mm, and then screened with a sieve with an aperture of 0.3 mm to ensure that the extracted useful components were of high purity. Then, a weakly alkaline potassium hydroxide solution with a concentration of 5% to 8% was used to extract the useful components, including incompletely fermented organic matter and trace elements. In the subsequent fermentation, the waste residue extract was re-invested at a ratio of 5% to 8% of the total fermentation liquid mass to achieve effective utilization of resources. Then, after preliminary mixing, natural organic matter was added by gradient mixing. The glycine fermentation liquid from different sources was first preliminarily mixed at a ratio of 3:2 to ensure the uniformity of the mixing. Then, humic acid and seaweed extract that had been pretreated (to remove impurities and suspended matter) were gradually added. The humic acid and seaweed extract were sterilized at high temperature before addition at a temperature of 80°C for 30 minutes to kill possible microorganisms and ensure the quality of the fertilizer. The amount of humic acid added was 15% of the total mass of the fermentation liquid, and the amount of seaweed extract added was 10% of the total mass of the fermentation liquid.During the mixing process, the stirring speed is precisely controlled to be 45r / min and the temperature is controlled at 35℃ to fully integrate the ingredients and form a nutrient-rich and balanced fertilizer system. In addition, the preparation process is dynamically adjusted according to the real-time monitoring parameters, and high-precision monitoring equipment is used to monitor the key parameters of the fermentation liquid in real time, such as pH, concentration, and temperature, to ensure comprehensive control of the fermentation process. When the pH deviates from the set range of ±0.2, the acid-base adjustment device is automatically started to accurately adjust the pH to ensure the quality of the fermentation liquid. When the concentration changes by more than ±5%, the concentration process parameters are adjusted in time to ensure the smooth progress of the subsequent process. Finally, separation, purification and concentration are carried out. The separation and purification adopts a combination of physical sedimentation and mild centrifugation. Environmentally friendly polymers are added as precipitants during the physical sedimentation process. The amount of polymers used is The concentration of impurities is 3%-5% of the total mass of the fermentation liquid. The precipitation time is 2h and the temperature is controlled at 25℃ to ensure effective separation of impurities. The speed of mild centrifugation is 1500r / min and the centrifugation time is 30min to further improve the separation effect. The concentration adopts the vacuum and low-temperature concentration process. The concentration equipment is a double-layer glass container. The inner glass is anti-fog treated and the outer glass has heat insulation performance to effectively maintain the stability of the process conditions. The temperature is maintained at 50℃ through the circulating water cooling system and the pressure is controlled at 0.06MPa. When the concentration of the fermentation liquid reaches the predetermined value (that is, the solid content in the fermentation liquid reaches 30%-35%), a specific filtering device is used for filtration to remove possible residual tiny impurities. Finally, the concentrated fermentation liquid is further processed and formulated to complete the preparation of liquid fertilizer.

[0027] Example 2, please refer to the attached Figure 1 -Attached Figure 2First, 1000 liters of glycine fermentation liquid was placed in a plastic fermentation container. The inner wall of the container was basically treated with anti-corrosion, and the thermal insulation performance was relatively poor. The fermentation process adopted a low-temperature and long-term fermentation method, and the temperature was strictly controlled at 25°C. The fermentation lasted for 72 hours. During this process, the fluctuation of natural ambient temperature was used to assist the fermentation to reduce the additional heating energy consumption. At the same time, during the fermentation process, it was slowly stirred at a speed of 30r / min to ensure that the fermentation liquid was fully mixed, providing good conditions for the smooth progress of the fermentation. Then, the by-products produced by the fermentation were fully collected, and the carbon dioxide produced during the fermentation process was collected through a gas collection tank made of ordinary plastic material with a sealing valve and a pressure-resistant pipe. The two collected Carbon dioxide is used to adjust the pH value of the fermentation liquid so that its pH value is stable in the ideal range of 6.5-7.5. The waste residue remaining after separation and purification is carefully processed. The waste residue is first crushed to control the particle size within the range of 0.1mm-0.5mm, and then screened with an ordinary sieve with an aperture of 0.3mm to ensure the purity of the extracted useful components. Then, a weak alkaline sodium hydroxide solution with a concentration of 8% is used to extract the useful components, including incompletely fermented organic matter and trace elements. In the subsequent fermentation, the waste residue extract is re-introduced at a ratio of 8% of the total fermentation liquid mass to achieve a certain degree of resource utilization. Then, after preliminary mixing, natural organic matter is added using a gradient mixing method. First, Glycine fermentation broths from different sources were preliminarily mixed in a ratio of 3:2 to ensure basic uniformity of mixing. Then, pretreated (impurities and suspended matter removal) humic acid and seaweed extracts were gradually added. Humic acid and seaweed extracts were simply sterilized before addition at 70°C for 25 minutes to kill some possible microorganisms. The amount of humic acid added was 13% of the total mass of the fermentation broth, and the amount of seaweed extract added was 8% of the total mass of the fermentation broth. During the mixing process, the stirring speed was precisely controlled at 40r / min and the temperature was controlled at 33°C to allow the various components to be relatively integrated to form a fertilizer system with relatively balanced nutrients. In addition, the preparation process was dynamically adjusted according to real-time monitoring parameters. Finally, separation was performed. Purification and concentration: separation and purification are carried out by combining physical sedimentation with mild centrifugation. During the physical sedimentation process, ordinary high molecular polymer is added as a precipitant, and its dosage is 4% of the total mass of the fermentation liquid. The precipitation time is 1.5h, and the temperature is controlled at 23°C to ensure a certain degree of effective separation of impurities. The speed of mild centrifugation is 1400r / min, and the centrifugation time is 25min. Concentration adopts a vacuum and low-temperature concentration process. The concentration equipment is a single-layer glass container. The temperature is maintained stable at 48°C through a circulating water cooling system, and the pressure is controlled at 0.05MPa. When the concentration of the fermentation liquid reaches the predetermined value (that is, the solid content in the fermentation liquid reaches 30%-35%), a conventional filtration device is used for filtration to remove some tiny impurities that may remain.Finally, the concentrated fermentation liquid is further processed and formulated to complete the preparation of liquid fertilizer.

[0028] Example 3, please refer to the attached Figure 1 -Attached Figure 2 First, 1000 liters of glycine fermentation liquid is placed in a fermentation container made of ordinary iron material. The fermentation process adopts a low-temperature and long-term fermentation method, and the temperature is controlled at 26°C. The fermentation is continued for 72 hours. During the fermentation process, it is stirred at a speed of 25r / min. Then, the by-products produced by the fermentation are collected. The carbon dioxide produced during the fermentation process is collected by an ordinary collection device, which is relatively weak in collection efficiency and stability. The collected carbon dioxide is used to adjust the pH value of the fermentation liquid so that the pH value is stable in the range of 6.3-7.7. The waste residue remaining after separation and purification is simply treated and crushed to control the particle size in the range of 0.2mm-0.6mm. , and then screened with a sieve with an aperture of 0.4mm to extract the useful components, then used a 4% weak alkaline potassium hydroxide solution to extract the useful components, and in the subsequent fermentation, the waste residue extract was re-added at a ratio of 7% of the total fermentation liquid mass, and then, after preliminary mixing, natural organic matter was added in a mixed manner, and glycine fermentation broths from different sources were preliminarily mixed at a ratio of 2:1, and then, humic acid and seaweed extracts that had undergone conventional treatment were added. The humic acid and seaweed extracts were basically sterilized before being added, the temperature was 75°C, the treatment time was 20min, the amount of humic acid added was 12% of the total mass of the fermentation liquid, and the amount of seaweed extract added was 8% of the total mass of the fermentation liquid. During the mixing process, the stirring speed is 40r / min and the temperature is controlled at 32°C. Finally, separation, purification and concentration are carried out. The separation and purification adopts a single physical sedimentation method. The precipitant added in the physical sedimentation process is an ordinary chemical reagent, and the amount is 4% of the total mass of the fermentation liquid. The precipitation time is 1.5h, and the temperature is controlled at 22°C. The concentration adopts a conventional concentration process, the temperature is controlled at 45°C-55°C, and the pressure is controlled at 0.04MPa-0.09MPa. When the concentration of the fermentation liquid reaches a predetermined value (that is, the solid content in the fermentation liquid reaches 28%-33%), a filtering device is used to filter and remove impurities. Finally, the concentrated fermentation liquid is processed and formulated to complete the preparation of liquid fertilizer.

[0029] Prepare: There are three experimental fields of equal size, labeled A, B, and C; Glycine fermentation liquid fertilizer prepared in Example 1, Example 2 and Example 3; Plant seedlings of the same variety and similar growth conditions; Measuring tools, such as rulers, scales, pH meters, etc.; Chemical reagents for analyzing the nutrient content of soil and the useful components in waste; Experimental steps: The glycine fermentation liquid fertilizer prepared in Example 1, Example 2 and Example 3 was applied to the experimental fields A, B and C respectively, and the same number of plant seedlings were planted in each experimental field to ensure that their growth conditions were consistent, including light, water, temperature, etc. During the planting process, the experimental data were recorded regularly and weighed. The collected waste was chemically analyzed to determine the content of useful components therein. The growth of the plants was regularly observed, including plant height, number of leaves, leaf color, root development, etc., and recorded. In the harvest season, the plant yield in each experimental field was measured, and the quality indicators such as fruit size, weight, sweetness, etc. were evaluated. The soil in each experimental field was sampled and analyzed to determine the pH and nutrient content of the soil.

[0030] As attached Figure 2 As shown, from the table data, it can be compared that Example 1 has advantages over Example 2 and Example 3 in terms of raw material consumption, resource utilization, waste discharge, plant growth and yield quality.

[0031] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0032] Similarly, it should be noted that in order to simplify the description disclosed in this application, so as to help understand one or more embodiments of the invention, in the above description of the embodiments of the present application, sometimes multiple features are merged into one embodiment, drawings or descriptions thereof. However, this disclosure method does not mean that the features required by the object of the present application are more than the features mentioned in the claims. In fact, the features of the embodiment are less than all the features of the single embodiment disclosed above. In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "approximately", "approximately" or "substantially" in some examples. Unless otherwise specified, "approximately", "approximately" or "substantially" indicate that the number allows a variation of ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the characteristics required by individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining the digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, such numerical settings are as accurate as possible within the feasible range.

[0033] Although the present invention is disclosed as above in terms of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A low-energy green preparation process for glycine fermentation liquid fertilizer, characterized in that: The green preparation process of liquid fertilizer comprises the following specific steps: Step 1: Place the glycine fermentation liquid in a fermentation container, and ferment it in a low-temperature and long-term fermentation manner, control the temperature at 20°C-25°C, and ferment for 72 hours. Use the fluctuation of natural ambient temperature to assist fermentation and reduce additional heating energy consumption. During the fermentation process, stir at a speed of 30r / min to ensure that the fermentation liquid is fully mixed; Step 2: Collect the byproducts of the fermentation, carbon dioxide and waste residues. The carbon dioxide generated during the fermentation process is collected by a carbon dioxide collection device and used to adjust the pH of the fermentation liquid to stabilize its pH value at 6.5-7.

5. The waste residues remaining after separation and purification are treated. After crushing and screening, the useful components therein are extracted with a weak alkaline potassium hydroxide solution with a concentration of 5%-8%. The useful components in the waste residues include incompletely fermented organic matter and trace elements, which are re-introduced in proportion in the subsequent fermentation, and the proportion is 5%-8% of the waste residue extract to the total fermentation liquid mass; Step 3: After preliminary mixing, natural organic matter is added by gradient mixing. First, glycine fermentation broths from different sources are preliminarily mixed in a ratio of 3:2, and then pretreated humic acid and seaweed extract are gradually added. The amount of humic acid added is 10%-15% of the total mass of the fermentation broth, and the amount of seaweed extract added is 5%-10% of the total mass of the fermentation broth. During the mixing process, the stirring speed is controlled at 45r / min and the temperature is controlled at 30°C-35°C to fully blend the components. Step 4: dynamically adjust the preparation process according to the real-time monitoring parameters, monitor the pH, concentration, and temperature parameters of the fermentation liquid in real time, and start the corresponding adjustment device if the parameters of the fermentation liquid deviate from the set range to ensure the quality of the fermentation liquid and the smooth progress of the subsequent process; Step 5, separation, purification and concentration are carried out. The separation and purification adopts a combination of physical sedimentation and mild centrifugation. The concentration adopts a vacuum and low-temperature concentration process. A precipitant needs to be added during the physical sedimentation process. The sedimentation time is 2 hours, the temperature is controlled at 25°C-30°C, the speed of mild centrifugation is 1500r / min, and the centrifugation time is 30min. In the vacuum and low-temperature concentration process, the pressure is controlled at 0.05MPa-0.08MPa and the temperature is 40°C-50°C. Finally, the concentrated fermentation liquid is further processed and formulated to complete the preparation of liquid fertilizer.

2. A low-energy consumption green preparation process of glycine fermentation liquid fertilizer according to claim 1, characterized in that: In the step 1, during the low-temperature and long-term fermentation process, the fermentation container is made of stainless steel, the inner wall needs to be treated with anti-corrosion and have thermal insulation properties, the temperature changes are continuously monitored during the fermentation process, and the temperature is maintained stable by adjusting the ventilation volume. When the temperature is lower than 20°C, the ventilation volume is reduced, and when the temperature is higher than 25°C, the ventilation volume is increased to ensure that the fermentation is carried out within a stable temperature range and reduce energy consumption.

3. A low-energy green preparation process for glycine fermentation liquid fertilizer according to claim 1, characterized in that: In the step 2, the device for collecting carbon dioxide is made of a pressure-resistant and corrosion-resistant plastic material, which needs to have good sealing and corrosion resistance. During the waste residue treatment process, the particle size of the crushed waste residue is controlled at 0.1mm-0.5mm, and a sieve with a specific aperture is used for screening, and the aperture of the sieve is 0.3mm. The treated waste residue extract is evenly added in the subsequent fermentation to ensure the stable quality of the fermentation liquid.

4. The low-energy green preparation process of glycine fermentation liquid fertilizer according to claim 1, characterized in that: In the step three, during the gradient mixing process, the initially mixed glycine fermentation broths from different sources need to be pretreated before mixing to remove impurities and suspended matter, and the added natural organic matter humic acid and seaweed extract are sterilized at high temperature at 80°C-90°C for 30 minutes.

5. The low-energy green preparation process of glycine fermentation liquid fertilizer according to claim 1, characterized in that: In the step 4, when the pH deviates from the set range of ±0.2, the acid-base adjustment device is automatically started, and when the concentration changes by more than ±5%, the concentration process parameters are adjusted to ensure the adaptability and stability of the process and reduce the scrap rate and energy waste caused by parameter fluctuations.

6. The low-energy green preparation process of glycine fermentation liquid fertilizer according to claim 1, characterized in that: In the step 5, the precipitant used in the physical sedimentation process is an environmentally friendly high molecular polymer, and its usage is 3%-5% of the total mass of the fermentation liquid. The separated fermentation liquid is further processed to remove residual precipitant and impurities.

7. The low-energy green preparation process of glycine fermentation liquid fertilizer according to claim 1, characterized in that: In the step 5, the concentration equipment selects a double-layer glass container, the inner glass is anti-fog treated, and the outer glass is selected from a material with heat-insulating properties. During the concentration process, the temperature is maintained stable at 40°C-50°C through a circulating water cooling device. When the solid content of the fermentation liquid reaches 30%-35%, a filtering device is used to filter to remove residual tiny impurities to ensure the quality of the concentrated fermentation liquid.

8. The low-energy green preparation process of glycine fermentation liquid fertilizer according to claim 1, characterized in that: In the step 5, when the concentrated fermentation liquid is further processed and formulated, the fermentation liquid is first transferred to a stirring container, slowly stirred at a speed of 20 r / min for 30 min, and then a compound nutrient regulator containing phosphorus and potassium elements is added to ensure a balanced ratio of nutrients in the fertilizer.

9. A low-energy green preparation process for glycine fermentation liquid fertilizer according to claim 8, characterized in that: In step five, after adding the nutritional regulator, it is necessary to use a pH detection instrument to monitor the pH value. When the pH value is not within the range of 6.5-7.5, weak acidic and weak alkaline environmental regulators are added for fine-tuning. The weak acidic regulator is citric acid with a concentration of 2%-3%, and the weak alkaline regulator is sodium bicarbonate with a concentration of 3%-4%, so that it is stabilized at 6.5-7.5.

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