CN115093272A - Method for producing water-soluble fertilizer by using waste brine - Google Patents
Method for producing water-soluble fertilizer by using waste brine Download PDFInfo
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- CN115093272A CN115093272A CN202210782523.0A CN202210782523A CN115093272A CN 115093272 A CN115093272 A CN 115093272A CN 202210782523 A CN202210782523 A CN 202210782523A CN 115093272 A CN115093272 A CN 115093272A
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- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C11/00—Other nitrogenous fertilisers
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Abstract
The invention discloses a method for producing a water-soluble fertilizer by using waste brine, which comprises the following specific steps: s1: preparing waste brine: collecting waste brine, and uniformly storing for later use; s2: treatment of harmful ingredients: sodium sulfate in the waste brine is separated out, and other beneficial components are reserved for standby; s3: adjusting the pH value: adjusting according to the current PH value of the waste brine to lead the waste brine to tend to be acidified; s4: and (3) enzymolysis and fermentation: adding an enzymolysis substance, and fermenting the waste brine; s5: and (3) molding: concentrating the waste brine, and performing granulation treatment through a granulator to form a water-soluble fertilizer embryonic form; s6: adding auxiliary substances: adding quicklime into the granulated water-soluble fertilizer, and mixing to obtain a finished product; s7: packaging: weighing and bagging the finished product, and arranging and storing; the method for producing the water-soluble fertilizer by using the waste brine disclosed by the invention has the effects of realizing secondary utilization of the waste brine, enriching the diversity of the water-soluble fertilizer and reducing the production cost of the water-soluble fertilizer.
Description
Technical Field
The invention relates to the technical field of water soluble fertilizer manufacturing, in particular to a method for producing a water soluble fertilizer by using waste brine.
Background
The water-soluble fertilizer is a water-soluble fertilizer and is a novel fertilizer which can be used for sprinkling irrigation, drip irrigation, soilless culture and foliar fertilization. The total amount of the chemical fertilizer used in China in years exceeds 6000 million tons, and the method is the country with the largest chemical fertilizer usage amount in the world. With the long-term application of chemical fertilizers, the soil is harmed to different degrees, the using amount of the traditional chemical fertilizers is gradually controlled in China, and the water-soluble fertilizer serving as a novel fertilizer can be combined with facility agriculture to realize water and fertilizer integration, so that the utilization rate of the fertilizer is improved.
The production method of edible salt at present mainly comprises two process methods of powder washing salt and vacuum crystallization salt, wherein a certain amount of waste brine is generated by the two production methods and needs to be discharged, under the normal condition, 0.1 cubic meter of high-salt waste brine is generated every ton of finished salt is produced, the waste brine contains a large amount of soluble solid matter components such as sodium chloride, sodium sulfate, potassium ions, calcium and magnesium ions, and the above components are non-toxic inorganic substances.
As a novel fertilizer, the water-soluble fertilizer is generally produced by using fully water-soluble raw materials, so that the production cost is high, and the waste brine contains components required by the water-soluble fertilizer such as sodium chloride, so that the secondary utilization of the waste brine needs to be considered, the diversity of the water-soluble fertilizer is enriched, and the production cost is reduced.
Disclosure of Invention
The invention discloses a method for producing a water-soluble fertilizer by using waste brine, and aims to solve the technical problem of how to extract beneficial substances in the waste brine and prepare the water-soluble fertilizer.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for producing a water-soluble fertilizer by using waste brine comprises the following specific steps:
s1: preparing waste brine: collecting waste brine, and uniformly storing for later use;
s2: and (3) treatment of harmful components: sodium sulfate in the waste brine is separated out, and other beneficial components are reserved for later use;
s3: adjusting the pH value: adjusting according to the current PH value of the waste brine to lead the waste brine to tend to be acidified;
s4: and (3) enzymolysis and fermentation: adding an enzymolysis substance, and fermenting the waste brine;
s5: molding: concentrating the waste brine, and performing granulation treatment through a granulator to form a water-soluble fertilizer embryonic form;
s6: adding auxiliary substances: adding quicklime into the granulated water-soluble fertilizer, and mixing to obtain a finished product;
s7: packaging: weighing and bagging the finished product, and arranging and storing;
in S2, the processing of the harmful components includes the following steps:
s21: acidification and aeration: carrying out acidification aeration treatment on the waste brine;
s22: adding an induction seed crystal: adding a proper amount of induction seed crystals into the treated waste brine according to a certain proportion;
s23: cooling and crystal absorption: cooling and absorbing the crystal of the mixed solution;
s24: and (3) precipitating sodium sulfate: cooling and absorbing crystals to generate sodium sulfate crystals at the bottom of the mixed solution;
s25: collecting mother liquor: collecting water vapor generated during evaporation in the cooling and crystal absorption process and uniformly mixing with the residual liquid.
Through being provided with the processing harmful component, water-soluble fertilizer is as novel fertilizer, generally choose for use full water-soluble raw materials to produce, lead to manufacturing cost high, and contain required composition among the water-soluble fertilizers such as sodium chloride in the waste brine, the sodium sulfate in the waste brine is appeared through the step of handling harmful component, make other beneficial component in the waste brine remain, waste brine after the concentrated processing behind the beneficial component in the rethread enzymolysis fermentation activation waste brine, and use the granulator to mould type and pack it, thereby realize waste brine reutilization, enrich the variety of water-soluble fertilizer, reduce water-soluble fertilizer manufacturing cost's purpose.
In a preferred embodiment, in S21, the specific treatment manner of acidification and aeration is to add organic acid into the waste brine to make the PH value reach 5-8, and to aerate for 1h in a normal temperature environment, the species to which the induction seed crystal is added in S22 is a purified sodium sulfate crystal, in S23, the specific treatment manner of cooling and crystal absorption is to heat the solution at 100 ℃ to evaporate the solution to form a hot saturated solution, and then by rapidly reducing the temperature of the hot saturated solution, sodium sulfate with a large solubility varying with the temperature will precipitate as a crystal, in S3, the PH adjustment includes the following specific steps:
s31: and (3) detecting the pH value: detecting the pH value of the treated harmful components in the waste brine liquid;
s32: and (3) acidity adjustment: adjusting the pH value by using quick lime and organic hydrochloric acid according to the detected pH value to ensure that the mixed liquid finally tends to be acidified;
s33: recording data: recording pH value data of the acidified mixed liquid;
in the step S4, the enzymolysis and fermentation comprises the following specific steps:
s41: adding an enzymolysis substance: adding a certain enzymolysis substance into the mixed solution after the pH value is adjusted;
s42: and (3) uniform mixing: uniformly mixing the enzymolysis substances in the mixed solution;
s43: sealing: completely sealing the container for containing and checking whether the sealing is complete;
s44: fermentation: transferring the container to a fermentation chamber, and continuously fermenting at 40-50 deg.C.
Through the arrangement of enzymolysis fermentation, the pH value is adjusted, and organic acid is used for adjusting in acidification aeration, so that the activity of the water-soluble fertilizer is effectively enhanced, and the utilization rate and the cultivation quality of the water-soluble fertilizer are improved.
In a preferred embodiment, in S5, the modeling includes the following specific steps:
s51, filtering and removing impurities: filtering the final solution to separate out large particles, wherein the large particles comprise impurities and inorganic substances;
s52: and (3) evaporation and concentration: evaporating at 100 deg.C, concentrating, and increasing the concentration of the mixed liquid;
s53: and (3) granulation: granulating the concentrated liquid by using a granulator to form a granular water-soluble fertilizer;
in the step S6, adding an auxiliary substance includes the following specific steps:
s61: and (3) quicklime preparation: preparing enough quicklime;
s62: calculating the quantity of the quicklime: calculating how much quicklime is added to neutralize the pH value according to the final pH value recorded in the recorded data;
s63: adding quicklime: adding quantitative quicklime according to the calculation result of calculating the quantity of the quicklime;
s64: mixing: mixing quicklime and granular water-soluble fertilizer to obtain the final product.
By adding lime powder, firstly acidifying the solution in the step of readjusting the pH value, recording, calculating the quantity of the lime powder required for neutralizing the pH value according to the recording, mixing the required lime powder with particles in the last step, and when the water-soluble fertilizer is used, contacting the lime powder with water, generating heat, quickly improving the temperature of a reaction environment, strengthening the water solubility and activity of the fertilizer, and improving the using effect of the fertilizer.
From the above, the method for producing the water-soluble fertilizer by using the waste brine comprises the following specific steps:
s1: preparing waste brine: collecting waste brine, and uniformly storing for later use;
s2: and (3) treatment of harmful components: sodium sulfate in the waste brine is separated out, and other beneficial components are reserved for standby;
s3: adjusting the pH value: adjusting according to the current PH value of the waste brine to lead the waste brine to tend to be acidified;
s4: and (3) enzymolysis and fermentation: adding an enzymolysis substance, and fermenting the waste brine;
s5: molding: concentrating the waste brine, and performing granulation treatment through a granulator to form a water-soluble fertilizer embryonic form;
s6: adding auxiliary substances: adding quicklime into the granulated water-soluble fertilizer, and mixing to obtain a finished product;
s7: packaging: weighing and bagging the finished product, and arranging and storing;
in S2, the method for treating harmful components includes the following steps:
s21: acidification and aeration: carrying out acidification aeration treatment on the waste brine;
s22: adding an induction seed crystal: adding a proper amount of induction seed crystal into the treated waste brine according to a certain proportion;
s23: cooling and crystal absorption: cooling and absorbing the crystal of the mixed solution;
s24: and (3) precipitating sodium sulfate: cooling and absorbing crystals to generate sodium sulfate crystals at the bottom of the mixed solution;
s25: collecting mother liquor: collecting water vapor generated during evaporation in the cooling and crystal absorption process and uniformly mixing with the residual liquid. The method for producing the water-soluble fertilizer by using the waste brine has the technical effects of realizing secondary utilization of the waste brine, enriching the diversity of the water-soluble fertilizer and reducing the production cost of the water-soluble fertilizer.
Drawings
Fig. 1 is a schematic overall flow chart of a method for producing a water-soluble fertilizer by using waste brine according to the invention.
FIG. 2 is a schematic view of a process for treating harmful components in a method for producing an aqueous fertilizer from waste brine according to the present invention.
FIG. 3 is a schematic diagram of a pH adjustment process of a method for producing an aqueous fertilizer from a waste brine according to the present invention.
FIG. 4 is a schematic view of an enzymolysis and fermentation process of a method for producing a water-soluble fertilizer by using waste brine according to the present invention.
FIG. 5 is a schematic diagram of a molding process of a method for producing a water-soluble fertilizer by using waste brine according to the present invention.
FIG. 6 is a schematic flow chart of the method for producing water-soluble fertilizer by using waste brine with auxiliary substances added.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The invention discloses a method for producing a water-soluble fertilizer by using waste brine, which is mainly applied to a scene of water-soluble fertilizer preparation.
Referring to fig. 1 and 2, a method for producing a water-soluble fertilizer by using waste brine comprises the following specific steps:
s1: preparing waste brine: collecting waste brine, and uniformly storing for later use;
s2: and (3) treatment of harmful components: sodium sulfate in the waste brine is separated out, and other beneficial components are reserved for later use;
s3: adjusting the pH value: adjusting according to the current PH value of the waste brine to lead the waste brine to tend to be acidified;
s4: and (3) enzymolysis and fermentation: adding an enzymolysis substance, and fermenting the waste brine;
s5: molding: concentrating the waste brine, and performing granulation treatment through a granulator to form a water-soluble fertilizer embryonic form;
s6: adding auxiliary substances: adding quicklime into the granulated water-soluble fertilizer, and mixing to obtain a finished product;
s7: and (3) packaging: weighing and bagging the finished product, and arranging and storing;
in S2, the processing of the harmful components includes the following steps:
s21: acidification and aeration: carrying out acidification aeration treatment on the waste brine;
s22: adding an induction seed crystal: adding a proper amount of induction seed crystal into the treated waste brine according to a certain proportion;
s23: cooling and crystal absorption: cooling and absorbing the crystal of the mixed solution;
s24: sodium sulfate precipitation: cooling and absorbing crystals to generate sodium sulfate crystals at the bottom of the mixed solution;
s25: collecting mother liquor: collect the cooling and inhale the aqueous vapor that produces when brilliant in-process evaporation and remaining liquid misce bene, water-soluble fertilizer is as novel fertilizer, generally choose for use full water-soluble raw materials to produce, lead to high in production cost, and contain required composition among the water-soluble fertilizers such as sodium chloride in the waste brine, the step through handling harmful component is separated out the sodium sulfate in the waste brine, make other beneficial component in the waste brine remain, waste brine after the beneficial component in the waste brine is activated through enzymolysis fermentation, and use the granulator to mould type and pack it, thereby realize waste brine reutilization, richen the variety of water-soluble fertilizer, reduce water-soluble fertilizer manufacturing cost's purpose.
Referring to FIG. 2, in a preferred embodiment, in S21, the specific treatment method of acidification and aeration is to add organic acid to the waste brine to make the pH value reach 5-8, and to aerate for 1h in the normal temperature environment.
Referring to fig. 2, in a preferred embodiment, in S22, the species to which the inducer seeds are added is sodium sulfate crystals that have been purified.
Referring to fig. 2, in a preferred embodiment, in S23, the cooling and crystal absorption are specifically performed by heating the solution at 100 ℃ to evaporate the solution to form a hot saturated solution, and then by rapidly lowering the temperature of the hot saturated solution, sodium sulfate with a large change in solubility with temperature is precipitated as crystals.
Referring to fig. 3, in a preferred embodiment, the step of adjusting the PH at S3 comprises the following steps:
s31: and (3) detecting the pH value: detecting the pH value of the waste brine liquid after harmful components are treated;
s32: and (3) acidity adjustment: adjusting the pH value by using quick lime and organic hydrochloric acid according to the detected pH value to ensure that the mixed liquid finally tends to be acidified;
s33: recording data: and recording the pH value data of the acidified mixed liquid.
Referring to fig. 4, in a preferred embodiment, in S4, the enzymatic fermentation includes the following specific steps:
s41: adding an enzymolysis substance: adding a certain enzymolysis substance into the mixed solution after the pH value is adjusted;
s42: and (3) uniformly mixing: uniformly mixing the enzymolysis substances in the mixed solution;
s43: sealing: completely sealing the container for containing and checking whether the sealing is complete;
s44: and (3) fermentation: the container is transferred to a fermentation chamber, continuous fermentation is carried out at the temperature of 40-50 ℃, and through setting enzymolysis fermentation and using organic acid for regulation in PH value regulation and acidification aeration, the activity of the water-soluble fertilizer is effectively enhanced, and the utilization rate and the cultivation quality of the water-soluble fertilizer are improved.
Referring to fig. 5, in a preferred embodiment, the molding at S5 comprises the following specific steps:
s51, filtering and removing impurities: filtering the final solution to separate out large particles, wherein the large particles comprise impurities and inorganic substances;
s52: and (3) evaporation and concentration: evaporating at 100 deg.C, concentrating, and increasing the concentration of the mixed liquid;
s53: and (3) granulation: and (4) granulating the concentrated liquid by using a granulator to form the granular water-soluble fertilizer.
Referring to fig. 6, in a preferred embodiment, the step of adding the auxiliary substance in S6 includes the following specific steps:
s61: preparing quicklime: preparing enough quicklime;
s62: calculating the quantity of the quicklime: calculating how much quicklime is added to neutralize the pH value according to the final pH value recorded in the recorded data;
s63: adding quicklime: adding quantitative quicklime according to the calculation result of calculating the quantity of the quicklime;
s64: mixing: mixing quicklime and a granular water-soluble fertilizer to prepare a final finished product, firstly acidifying the solution in the step of regulating the pH value again, recording, calculating the quantity of lime powder required for neutralizing the pH value according to the record, and mixing the required lime powder with the granular material in the last step.
The working principle is as follows: when in use, the sodium sulfate in the waste brine is separated out through the step of treating harmful components, so that other beneficial components in the waste brine are reserved, wherein organic acid is added into the waste brine to lead the PH value to reach 5-8, and aeration is carried out for 1h under the normal temperature environment to achieve the aim of acidification and aeration, then a proper amount of induction crystal seeds are added into the treated waste brine according to a certain proportion, then the solution is heated under the condition of 100 ℃ to lead the solution to be evaporated to form hot saturated solution, then sodium sulfate with larger solubility changing along with the temperature is precipitated in the form of crystals by quickly reducing the temperature of the hot saturated solution, beneficial components in the waste brine are activated by enzymolysis and fermentation, then the waste brine is concentrated and treated, and a granulator is used for molding and packaging, thereby realizing the purposes of secondary utilization of the waste brine, enriching the diversity of the water-soluble fertilizer and reducing the production cost of the water-soluble fertilizer.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A method for producing a water-soluble fertilizer by using waste brine is characterized by comprising the following specific steps:
s1: preparing waste brine: collecting waste brine, and uniformly storing for later use;
s2: and (3) treatment of harmful components: sodium sulfate in the waste brine is separated out, and other beneficial components are reserved for later use;
s3: adjusting the pH value: adjusting according to the current PH value of the waste brine to lead the waste brine to tend to be acidified;
s4: enzymolysis and fermentation: adding an enzymolysis substance, and fermenting the waste brine;
s5: molding: concentrating the waste brine, and performing granulation treatment through a granulator to form a water-soluble fertilizer embryonic form;
s6: adding auxiliary substances: adding quicklime into the granulated water-soluble fertilizer, and mixing to obtain a finished product;
s7: packaging: weighing and bagging the finished product, and arranging and storing;
in S2, the processing of the harmful components includes the following steps:
s21: acidification and aeration: carrying out acidification aeration treatment on the waste brine;
s22: adding an induction seed crystal: adding a proper amount of induction seed crystal into the treated waste brine according to a certain proportion;
s23: cooling and crystal absorption: cooling and absorbing the crystal of the mixed solution;
s24: and (3) precipitating sodium sulfate: cooling and absorbing crystals to generate sodium sulfate crystals at the bottom of the mixed solution;
s25: collecting mother liquor: collecting water vapor generated during evaporation in the cooling and crystal absorption process and uniformly mixing with the residual liquid.
2. The method for producing the water-soluble fertilizer by using the waste brine as claimed in claim 1, wherein in the step S21, the specific treatment manner of acidification and aeration is to add organic acid into the waste brine to make the pH value reach 5-8, and to aerate for 1 hour in a normal temperature environment.
3. The method for producing the water-soluble fertilizer by using the waste brine as claimed in claim 1, wherein the species added with the induction seed crystal in the S22 is purified sodium sulfate crystal.
4. The method for producing the water-soluble fertilizer by using the waste brine as claimed in claim 1, wherein in the step S23, the specific treatment of cooling and crystal absorption is to heat the solution at 100 ℃ to evaporate the solution to form a hot saturated solution, and then by rapidly reducing the temperature of the hot saturated solution, the sodium sulfate with the solubility greatly changing with the temperature is separated out in the form of crystals.
5. The method for producing the water-soluble fertilizer from the waste brine as claimed in claim 1, wherein the step of adjusting the pH value in S3 comprises the following specific steps:
s31: and (3) detecting the pH value: detecting the pH value of the waste brine liquid after harmful components are treated;
s32: and (3) acid regulation: adjusting the pH value by using quick lime and organic hydrochloric acid according to the detected pH value to ensure that the mixed liquid finally tends to be acidified;
s33: recording data: and recording the pH value data of the acidified mixed liquid.
6. The method for producing the water-soluble fertilizer from the waste brine according to claim 5, wherein in the step S4, the enzymatic fermentation comprises the following specific steps:
s41: adding an enzymolysis substance: adding a certain enzymolysis substance into the mixed solution after the pH value is adjusted;
s42: and (3) uniform mixing: uniformly mixing the enzymolysis substances in the mixed solution;
s43: sealing: completely sealing the container for containing and checking whether the sealing is complete;
s44: fermentation: transferring the container to a fermentation chamber, and continuously fermenting at 40-50 deg.C.
7. The method for producing the water-soluble fertilizer by using the waste brine as claimed in claim 6, wherein the step of molding in S5 comprises the following specific steps:
s51, filtering and removing impurities: filtering the final solution to separate out large particles, wherein the large particles comprise impurities and inorganic substances;
s52: and (3) evaporation and concentration: evaporating at 100 deg.C, concentrating, and increasing the concentration of the mixed liquid;
s53: and (3) granulation: and (4) granulating the concentrated liquid by using a granulator to form the granular water-soluble fertilizer.
8. The method for producing the water-soluble fertilizer by using the waste brine as claimed in claim 7, wherein the step of adding the auxiliary substances in the step S6 comprises the following specific steps:
s61: preparing quicklime: preparing enough quicklime;
s62: calculating the quantity of the quicklime: calculating how much quicklime is added to neutralize the pH value according to the final pH value recorded in the recorded data;
s63: adding quicklime: adding quantitative quicklime according to the calculation result of calculating the quantity of the quicklime;
s64: mixing: mixing quicklime and granular water-soluble fertilizer to obtain the final product.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1886338A (en) * | 2003-12-31 | 2006-12-27 | 科学与工业研究委员会 | Simultaneous recovery of potassium chloride and KC1 enriched edible salt |
| CN101704560A (en) * | 2009-07-29 | 2010-05-12 | 林晓山 | Technique for desalting sea water, making salt and comprehensively using by-products thereof by utilizing wind energy, solar energy and heat pump technologies |
| CN113003586A (en) * | 2021-03-02 | 2021-06-22 | 湛江市农海科技有限公司 | Industrial method for comprehensive utilization of coastal mudflat, seawater, wind energy and solar energy |
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- 2022-07-05 CN CN202210782523.0A patent/CN115093272A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1886338A (en) * | 2003-12-31 | 2006-12-27 | 科学与工业研究委员会 | Simultaneous recovery of potassium chloride and KC1 enriched edible salt |
| CN101704560A (en) * | 2009-07-29 | 2010-05-12 | 林晓山 | Technique for desalting sea water, making salt and comprehensively using by-products thereof by utilizing wind energy, solar energy and heat pump technologies |
| CN113003586A (en) * | 2021-03-02 | 2021-06-22 | 湛江市农海科技有限公司 | Industrial method for comprehensive utilization of coastal mudflat, seawater, wind energy and solar energy |
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