WO2022253359A1 - Method for producing high-efficiency organic liquid fertilizer by using biogas slurry and apparatus therefor - Google Patents

Method for producing high-efficiency organic liquid fertilizer by using biogas slurry and apparatus therefor Download PDF

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WO2022253359A1
WO2022253359A1 PCT/CN2022/107603 CN2022107603W WO2022253359A1 WO 2022253359 A1 WO2022253359 A1 WO 2022253359A1 CN 2022107603 W CN2022107603 W CN 2022107603W WO 2022253359 A1 WO2022253359 A1 WO 2022253359A1
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biogas slurry
tank
centrifugal pump
solution
filter
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PCT/CN2022/107603
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French (fr)
Chinese (zh)
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涂攀峰
程凤娴
姬静华
胡振兴
胡克纬
龚林
邓兰生
张承林
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仲恺农业工程学院
东莞一翔液体肥料有限公司
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Priority to GB2300707.3A priority Critical patent/GB2611696A/en
Publication of WO2022253359A1 publication Critical patent/WO2022253359A1/en

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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D1/00—Fertilisers containing potassium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/40—Treatment of liquids or slurries
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F9/00—Fertilisers from household or town refuse
    • C05F9/04—Biological compost
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/20—Liquid fertilisers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Definitions

  • the invention relates to the technical field of resource utilization of agricultural waste, and more specifically relates to a method and a device for producing high-efficiency organic liquid fertilizer from biogas slurry.
  • Biogas slurry refers to the residue after anaerobic fermentation of various organic matter such as human and animal manure and straw.
  • biogas projects that is, through anaerobic biodegradation to treat high-concentration organic wastewater.
  • biogas slurry is It is a by-product of the anaerobic digestion process, but it is also an environmentally friendly fertilizer that can be widely used in agricultural production, and is an important content of the resource utilization of agricultural waste advocated by the state.
  • Biogas slurry is a good liquid fertilizer, which is mainly composed of water. Biogas slurry has dual functions in crop growth, one is as a biological fertilizer containing nitrogen, phosphorus, potassium and various trace elements, and the other is as a biological pesticide containing amino acids, growth hormones and antibiotics.
  • biogas slurry is a high-quality, full-effect organic fertilizer.
  • it can replace or partially replace chemical fertilizers, and has a very wide range of applications. It can be used not only as base fertilizer, but also as top dressing or foliar fertilizer.
  • biogas slurry to produce commercial fertilizers In foreign countries, the use of biogas slurry to produce commercial fertilizers is generally concentrated by means of multi-effect steam, and the cost of equipment investment is high. At this stage, it is difficult to promote and apply it on a large scale in my country. Domestic use of biogas slurry to produce commercial fertilizers is quite different from that of foreign countries. Domestically, auxiliary materials (mainly inorganic nutrients) are added to the biogas slurry to ensure that the biogas slurry commercial fertilizer meets national and industry standards.
  • auxiliary materials mainly inorganic nutrients
  • biogas slurry is complex, which contains a large number of microorganisms, salt ions and solid suspended matter, and direct field application is likely to cause blockage of irrigation equipment; at the same time, reasons such as incomplete deodorization of biogas slurry also cause liquid fertilizers containing biogas slurry The commerciality of fertilizers is not high, resulting in low enthusiasm for fertilizer production.
  • Chinese invention patent CN105819589A discloses a method for removing the odor of biogas slurry.
  • This invention only uses ferrate and bacteriostatic agent for deodorization, but the deodorization of ferrate is mainly to oxidize such as hydrogen sulfide (H 2 S), Methyl mercaptan (CH 3 SH), methyl sulfide (CH 3 ) 2 S), ammonia (NH 3 ) and other odorous substances, while the odorous substances in biogas slurry include not only hydrogen sulfide, ammonia, but also indole , volatile phenol, etc., only using ferrate to deodorize can not completely remove the odor in the biogas slurry; at the same time, the biogas slurry fertilizer prepared by this method is the biogas slurry stock solution, which needs to be diluted when used, and it needs to be used for irrigation. Add plenty of water. Therefore, for the treatment of biogas slurry, it is necessary to study a new biogas slurry treatment method to obtain a more thorough deodorization and more water-saving biogas slurry treatment solution.
  • the technical problem to be solved by the present invention is to overcome the defects and deficiencies of the above-mentioned existing biogas slurry fertilizers, and provide a method for producing high-efficiency organic liquid fertilizers using biogas slurry.
  • the water is further deodorized and impurity removed to obtain biogas slurry stock solution; the biogas slurry stock solution is mixed to obtain liquid fertilizers with different nutrient ratios.
  • the first object of the present invention is to provide a method for producing high-efficiency organic liquid fertilizer from biogas slurry.
  • the second object of the present invention is to provide a device used in the method of producing high-efficiency organic liquid fertilizer from biogas slurry.
  • a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer comprising the following steps:
  • Raw material reprocessing use micro-nano bubble water to further deodorize the primary treatment liquid and remove suspended fine particle insoluble matter, and filter to obtain biogas slurry;
  • the biogas slurry stock solution is freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to the different formulas set, to obtain a comprehensive nutrient biogas slurry liquid fertilizer suitable for different crops .
  • Bubbles with a diameter of less than 100 ⁇ m are called microbubbles, and bubbles with a diameter of less than 100 nm are called nanobubbles.
  • the diameter of micro-nano bubbles is between micro-bubbles and nano-bubbles, and refers to bubbles with diameters ranging from tens of microns to hundreds of nanometers when bubbles occur.
  • micro-nano bubbles Compared with ordinary bubbles, micro-nano bubbles have the characteristics of long residence time in water, high mass transfer efficiency, high interface potential, and free radical release.
  • the surface of micro-nano bubbles has a negative charge, which is higher than that of ordinary bubbles. Usually, the surface charge of micro-nano bubbles is -50 ⁇ -30mV.
  • micro-nano bubbles can absorb positively charged substances in water, remove organic suspended solids or pollutants in water, and achieve the purification effect of solid-liquid separation; some studies have also found that micro-nano bubbles have strong oxidizing properties, which can make Bacteria are inactivated.
  • the substances that produce odor during the biogas slurry treatment process are mainly composed of ammonia, hydrogen sulfide, indole, and volatile phenols. Most of the odor-generating substances are organic compounds. These substances have active groups, are prone to chemical reactions, and are particularly easy to be oxidized.
  • the double oxidation of micro-nano bubbles and ferrate can achieve the purpose of rapid deodorization .
  • micro-nano bubbles can also inactivate bacteria, which can reduce the reproduction of harmful microorganisms in biogas slurry.
  • This application uses the double oxidation of ferrate and micro-nano bubble water to quickly remove the source of odor in the biogas slurry, and the deodorization is sufficient; at the same time, the use of micro-nano bubble water also saves the water demand for the production of liquid fertilizer.
  • the liquid fertilizer prepared by the method of the invention has higher nutritional value and higher commerciality, and can meet the requirements of various irrigation facilities; the method is easy to operate, simple in technology, low in cost, and can realize maximum utilization of biogas slurry.
  • the primary treatment of raw materials in the step S1 is to first add ferrate with a mass of 0.001% to 0.02% of the biogas slurry, and then add a bacteriostatic agent with a mass of 0.001% to 0.02% of the biogas slurry for 5 to 12 hours of mixed reaction. Primary deodorization and sterilization.
  • the filtering in step S1 is double filtering through the first filter and the second filter.
  • the pore sizes of the filters in the step S1 are respectively 850 ⁇ m and 250 ⁇ m.
  • the ferrate is potassium ferrate or sodium ferrate
  • the antibacterial agent is 2-bromo-2-nitro-1.3-propanediol.
  • the raw material reprocessing in step S2 is to mix the micro-nano-bubble water with the primary treatment liquid, and the mixing volume ratio of the micro-nano-bubble water to the biogas slurry is 2-5:1.
  • the micro-nano-bubble water in the step S2 comes from the circulating water produced by the nano-bubble generator, and the gas source of the nano-bubble generator is air.
  • the filtering in step S2 is filtering through disc filters.
  • the filtration precision in the step S2 is 106 ⁇ m.
  • the nitrogen solution in step S3 includes urea solution and urea ammonium nitrate solution; the phosphorus solution is monoammonium phosphate solution; and the potassium solution is potassium chloride solution.
  • a device used in the method of producing high-efficiency organic liquid fertilizer by using biogas slurry is composed of a biogas slurry treatment device and a liquid fertilizer mixing device.
  • the biogas slurry treatment device includes: a nanobubble generator 1, a bubble pool 2, a filter tank 3, a first filter 4, a second filter 5, a slag discharge port 6, a first valve 7, a second valve 8, a first A centrifugal pump 9, a first mixing unit 10, a biogas slurry treatment tank 11, a second centrifugal pump 12, and a filter assembly 13;
  • the liquid fertilizer mixing device includes a biogas slurry raw material tank 14, a first pneumatic valve 15, and a third centrifugal pump 16 , nitrogen solution tank 17, second pneumatic valve 18, fourth centrifugal pump 19, phosphorus solution tank 20, third pneumatic valve 21, fifth centrifugal pump 22, potassium solution tank 23, fourth pneumatic valve 24, sixth centrifugal pump 25.
  • Nitrogen solution tank 17, phosphorus solution tank 20, potassium solution tank 23 and medium and trace element tank 26 are respectively connected to the main pipeline through branch pipelines, and each branch pipeline is respectively provided with a second pneumatic valve 18 and a fourth centrifugal pump 19 , the third pneumatic valve 21 and the fifth centrifugal pump 22, the fourth pneumatic valve 24 and the sixth centrifugal pump 25, the fifth pneumatic valve 27 and the seventh centrifugal pump 28; the top of the mixing tank 30 is equipped with a second mixing unit 29;
  • the mixing tank 30 is connected to the electromagnetic valve 33 through the eighth centrifugal pump 32, and a flow meter 31 is also arranged between the mixing tank 30 and the eighth centrifugal pump 32;
  • the biogas slurry treatment device also includes a terminal control, and the terminal control It includes a manual controller 34 and/or a remote control terminal 35, the terminal control is used to control each valve, and then control the liquid output of each tank.
  • the filter pool 3 adopts a high-low drop design, separated by a filter in the middle, and the filter includes a first filter 4 and a second filter 5 .
  • the pore diameters of the first filter 4 and the second filter 5 are 850 ⁇ m and 250 ⁇ m, respectively.
  • the biogas slurry treatment pond 11 can also perform aerobic fermentation or mixed culture with aerobic microorganisms as required.
  • the filter assembly 13 is a disc filter with a filter precision of 106 ⁇ m.
  • the system remote control terminal 35 adopts PLC programming for automatic control.
  • the mixing tank 30 is provided with a weighing device to control the amount of different raw materials added.
  • the terminal controller 35 can automatically calculate the amount of required different raw material manure solutions according to the field data collected by the agronomist.
  • the collected anaerobically fermented biogas slurry is directly injected into the filter tank 3, and ferrate is added to the filter tank 3 for oxidation and deodorization, and a bacteriostatic agent is added to prevent bacterial growth.
  • the biogas slurry passes through the first filter screen 4 of 850 ⁇ m and The second filter 5 pre-filters, and injects the pre-filtered biogas slurry into the biogas slurry treatment pond 11 by controlling the second valve 8 and the first centrifugal pump 9 .
  • the water source in the bubble pool 2 is the water source continuously treated by the nano-bubble generator 1, the dissolved oxygen concentration in the water reaches a saturated concentration, and the dissolved oxygen content in the water is close to 4ppm.
  • the micro-nano bubble water is injected into the biogas slurry treatment pond 11 through the control of the first valve 7 and the first centrifugal pump 9, fully stirred with the biogas slurry and then left to stand, which can further remove the source of odorous substances in the biogas slurry, and at the same time remove the biogas slurry. Suspended fine insoluble particles.
  • the treated biogas slurry is injected into the 106 ⁇ m filter assembly 13 through the second centrifugal pump 12 , and the biogas slurry flows into the biogas slurry raw material tank 14 after being filtered.
  • the opening and closing of the pneumatic valves of the biogas slurry raw material tank 14, the nitrogen solution tank 17, the phosphorus solution tank 20, the potassium solution tank 23 and the medium and trace element tank 26 and the centrifugal pumps of each tank are controlled by the manual controller 34 or the remote control terminal 35
  • the operation of each raw material is poured into the mixing tank 30 and mixed.
  • the second mixing unit 29 is arranged above the mixing tank 30 to ensure that different raw materials are mixed evenly.
  • the mixing tank is equipped with a weighing device to control the amount of different raw materials added. Stir for more than half an hour to get the required formula liquid fertilizer.
  • the finished biogas slurry fertilizer is output by the eighth centrifugal pump 32 for commercial packaging or directly transported to the field.
  • the flow meter 31 controls the extraction amount of the finished fertilizer, and the electromagnetic valve 33 controls the discharge.
  • the present invention has the following beneficial effects:
  • the present invention provides a method of using biogas slurry to produce high-efficiency organic liquid fertilizer, using ferrate and micro-nano bubble water to fully deodorize, the content of substances that produce odor before and after biogas slurry treatment is significantly lower, and the content of hydrogen sulfide The reduction rate reached 100%, and the reduction rates of indole and volatile phenol content reached 84.67% and 77.65%, respectively.
  • the deodorization is sufficient and the commerciality of biogas slurry is improved; different biogas slurry fertilizers are prepared according to different growth needs of crops, and the nutrients are comprehensive. , flexible formula, high degree of automation, flexible use, and wide application range.
  • the method provided by the present invention has a simple production process and relatively low construction cost.
  • the biogas slurry fertilizer prepared by the method can meet the requirements of various irrigation facilities and can realize the maximum utilization of the biogas slurry.
  • the invention does not produce waste liquid in the production process of fully utilizing the biogas slurry, and greatly saves the water source consumed in the production of liquid fertilizer by using the micro-nano bubble water.
  • it provides an effective way, fundamentally solves the problem of biogas slurry utilization, and realizes the transformation of "waste" into treasure and efficient utilization.
  • the present invention provides a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer.
  • the device and equipment are simple and suitable for industrialization and large-scale production of high-efficiency organic liquid fertilizer from biogas slurry in areas where the aquaculture industry is relatively concentrated. Production can improve the comprehensive utilization benefits of biogas slurry.
  • Fig. 1 is a schematic structural view of a device used in a method for producing high-efficiency organic liquid fertilizers from biogas slurry in Example 1 of the present invention; Filter screen, 5-second filter screen, 6-slag outlet, 7-first valve, 8-second valve, 9-first centrifugal pump, 10-first mixing unit, 11-biogas slurry treatment tank, 12 -Second centrifugal pump, 13-filter assembly, 14-biogas slurry raw material tank, 15-first pneumatic valve, 16-third centrifugal pump, 17-nitrogen solution tank, 18-second pneumatic valve, 19-fourth centrifugal Pump, 20-phosphorus solution tank, 21-third pneumatic valve, 22-fifth centrifugal pump, 23-potassium solution tank, 24-fourth pneumatic valve, 25-sixth centrifugal pump, 26-medium trace element tank, 27 -Fifth pneumatic valve, 28-Seventh centrifugal pump, 29-Second mixing unit, 30-Mixing tank,
  • the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the technical field.
  • Embodiment 1 A device used in the method of producing high-efficiency organic liquid fertilizer from biogas slurry
  • a device used in the method of producing high-efficiency organic liquid fertilizer by using biogas slurry is composed of a biogas slurry treatment device and a liquid fertilizer mixing device.
  • the biogas slurry treatment device includes: a nanobubble generator 1, a bubble pool 2, a filter tank 3, a first filter 4, a second filter 5, a slag discharge port 6, a first valve 7, a second valve 8, a first A centrifugal pump 9, a first mixing unit 10, a biogas slurry treatment tank 11, a second centrifugal pump 12, and a filter assembly 13;
  • the liquid fertilizer mixing device includes a biogas slurry raw material tank 14, a first pneumatic valve 15, and a third centrifugal pump 16 , nitrogen solution tank 17, second pneumatic valve 18, fourth centrifugal pump 19, phosphorus solution tank 20, third pneumatic valve 21, fifth centrifugal pump 22, potassium solution tank 23, fourth pneumatic valve 24, sixth centrifugal pump 25.
  • Centrifugal pump 16 Nitrogen solution tank 17, phosphorus solution tank 20, potassium solution tank 23 and medium and trace element tank 26 are respectively connected to the main pipeline through branch pipelines, and the second pneumatic valve 18 and the fourth centrifugal pump are respectively arranged on each branch pipeline 19.
  • the third pneumatic valve 21 and the fifth centrifugal pump 22, the fourth pneumatic valve 24 and the sixth centrifugal pump 25, the fifth pneumatic valve 27 and the seventh centrifugal pump 28; the second mixing unit 29 is installed above the mixing tank 30;
  • the mixing tank 30 is connected to the electromagnetic valve 33 through the eighth centrifugal pump 32, and a flow meter 31 is also arranged between the mixing tank 30 and the eighth centrifugal pump 32.
  • the terminal control includes a manual controller 34 and/or a remote control terminal 35, It is used to control the valves to control the liquid output of each tank.
  • the collected anaerobically fermented biogas slurry is directly injected into the filter tank 3, and ferrate is added to the filter tank 3 for oxidation and deodorization, and a bacteriostatic agent is added to prevent bacterial growth.
  • the biogas slurry passes through the first filter screen 4 of 850 ⁇ m and The second filter 5 pre-filters, and injects the pre-filtered biogas slurry into the biogas slurry treatment pond 11 by controlling the second valve 8 and the first centrifugal pump 9 .
  • the water source in the bubble pool 2 is the water source continuously treated by the nano-bubble generator 1, the dissolved oxygen concentration in the water reaches a saturated concentration, and the dissolved oxygen content in the water is close to 4ppm.
  • the micro-nano bubble water is injected into the biogas slurry treatment pond through the control of the first valve 7 and the first centrifugal pump 9, fully stirred with the biogas slurry and then left to stand, which can further remove the source of odorous substances in the biogas slurry, and at the same time remove suspended substances in the biogas slurry. of fine insoluble particles.
  • the treated biogas slurry is injected into the 106 ⁇ m filter assembly 13 through the second centrifugal pump 12 , and the biogas slurry flows into the biogas slurry raw material tank 14 after being filtered.
  • the opening and closing of the pneumatic valves of the biogas slurry raw material tank 14, the nitrogen solution tank 17, the phosphorus solution tank 20, the potassium solution tank 23 and the medium and trace element tank 26 and the centrifugal pumps of each tank are controlled by the manual controller 34 or the remote control terminal 35
  • the operation of each raw material is poured into the mixing tank 30 and mixed.
  • the second mixing unit 29 is arranged in the mixing tank 30, which can ensure that different raw materials are mixed evenly.
  • the mixing tank is equipped with a weighing device to control the amount of different raw materials added. Stir for more than half an hour to get the required formula liquid fertilizer.
  • the finished biogas slurry fertilizer is output by the eighth centrifugal pump 32 for commercial packaging or directly transported to the field.
  • the flow meter 31 controls the extraction amount of the finished fertilizer, and the electromagnetic valve 33 controls the discharge.
  • Embodiment 2 A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer
  • a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer comprising the following steps:
  • Raw material reprocessing use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry The volume ratio of the primary treatment liquid is 5:1. Stir it with a mixer and let it stand for 24 hours. Use micro-nano bubbles to fully remove odorous substances and suspended fine particles of insoluble matter. After retreatment, the biogas slurry is injected by pump 3 and the filtration accuracy is 106 ⁇ m. The disc filter group is used to obtain biogas slurry stock solution after filtration.
  • the biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients.
  • the nitrogen solution is a urea solution
  • the phosphorus solution is a monoammonium phosphate solution
  • the potassium solution is a potassium chloride solution
  • the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
  • Embodiment 3 A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer
  • a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer comprising the following steps:
  • Raw material reprocessing use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry The volume ratio of the primary treatment liquid is 5:1. Stir it with a mixer and let it stand for 24 hours. Use micro-nano bubbles to fully remove odorous substances and suspended fine particles of insoluble matter. After retreatment, the biogas slurry is injected by pump 3 and the filtration accuracy is 106 ⁇ m. The disc filter group is used to obtain biogas slurry stock solution after filtration.
  • the biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients.
  • the nitrogen solution is a urea solution
  • the phosphorus solution is a monoammonium phosphate solution
  • the potassium solution is a potassium chloride solution
  • the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
  • Embodiment 4 A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer
  • a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer comprising the following steps:
  • Raw material reprocessing use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry
  • the volume ratio of the primary treatment liquid is 2:1. Stir it with a mixer and let it stand for 24 hours.
  • the biogas slurry is injected by pump 3 and the filtration accuracy is 106 ⁇ m.
  • the disc filter group is used to obtain biogas slurry stock solution after filtration.
  • the biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients.
  • the nitrogen solution is a urea solution
  • the phosphorus solution is a monoammonium phosphate solution
  • the potassium solution is a potassium chloride solution
  • the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
  • Embodiment 5 A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer
  • a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer comprising the following steps:
  • Raw material reprocessing use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry
  • the volume ratio of the primary treatment liquid is 2:1. Stir it with a mixer and let it stand for 24 hours. Use the micro-nano bubbles to fully remove the odorous substances and suspended fine particle insoluble matter.
  • the filter group is used to obtain biogas slurry stock solution after filtration.
  • the biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients.
  • the nitrogen solution is a urea solution
  • the phosphorus solution is a monoammonium phosphate solution
  • the potassium solution is a potassium chloride solution
  • the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
  • a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer comprising the following steps:
  • Raw material treatment Add potassium ferrate with 0.02% biogas slurry mass in the filter tank, and oxidize and deodorize after mixing for 10 hours. After deodorization, add 2-bromo-2-nitro with 0.01% biogas slurry mass -1.3-Propanediol antibacterial agent prevents harmful microorganisms from re-breeding; at the same time, the primary treatment liquid is double-filtered by anaerobic fermentation biogas slurry with a double filter of 850 ⁇ m and 250 ⁇ m; the primary treatment liquid is then filtered through a plate with a filtration accuracy of 106 ⁇ m A sheet filter set, after filtration, the raw liquid of the biogas slurry is obtained.
  • the biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution, and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients.
  • the nitrogen solution is a urea solution
  • the phosphorus solution is a monoammonium phosphate solution
  • the potassium solution is a potassium chloride solution
  • the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
  • a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer comprising the following steps:
  • the primary treatment liquid is double-filtered biogas slurry undergoing anaerobic fermentation by using double filter screens of 850 ⁇ m and 250 ⁇ m.
  • Raw material reprocessing use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry The volume ratio of the primary treatment liquid is 6:1. Stir it with a mixer and let it stand for 24 hours. Use micro-nano bubbles to fully remove odorous substances and suspended fine particles of insoluble matter. After retreatment, the biogas slurry is filtered through a disc with a precision of 106 ⁇ m The filter group is used to obtain biogas slurry stock solution after filtration.
  • the biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients.
  • the nitrogen solution is a urea solution
  • the phosphorus solution is a monoammonium phosphate solution
  • the potassium solution is a potassium chloride solution
  • the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
  • the biogas slurry microbial quantity before and after the biogas slurry treatment of Examples 2 to 5 was analyzed, and the dilution plate method was used to measure.
  • Embodiment 7 Biogas slurry liquid fertilizer field application test
  • Test site Xiupo Village, Huashi Town, Fangcheng District, Fangchenggang City, Guangxi Zhuang Autonomous Region
  • Irrigation facilities drip irrigation
  • Test plan In this test, two treatments were set up: liquid compound fertilizer prepared from biogas slurry prepared in Example 2 of the present invention, solid compound fertilizer and conventional fertilization (only compound fertilizer). Conventional fertilization adopts "Garshli” macroelement water-soluble fertilizer (N:P:K 16:16:16) widely used by local growers.
  • the formula for preparing liquid compound fertilizer from biogas slurry is: 20 parts of biogas slurry treatment stock solution, 7 parts of nitrogen solution, 4 parts of phosphorus solution, 8 parts of potassium solution, and 0.1 part of medium and trace element solution.
  • the pump injects the fertilizer liquid into the field irrigation pipeline, and at the same time ensures that the EC value of the fertilizer and water in the field is below 4.
  • Conventional fertilization is to pour a large amount of water-soluble granular fertilizer into the fertilizer-dissolving tank to dissolve, and then apply it to the field through drip irrigation.
  • biogas slurry fertilizer can significantly promote the growth of watermelon roots, and the total root length, total root surface area and root tip number are significantly increased compared with conventional fertilizers.
  • the length, total root surface area and root tip number increased by 46.07%, 47.09% and 51.83% respectively; the effect of biogas slurry fertilizer on watermelon production was also very obvious, and the yield increase rate reached 33.56%.

Abstract

The present application provides a method for producing a high-efficiency organic liquid fertilizer by using a biogas slurry and an apparatus therefor. The method comprises the following steps: S1. primary treatment of raw materials, performing primary deodorization and sterilization on the biogas slurry by using a ferrate and a bacteriostatic agent, and performing filtering to obtain a primary treatment solution; S2. re-treatment of the raw materials, further deodorizing the primary treatment solution by using micro-nano bubble water, removing suspended fine particle insoluble substances, and performing filtering to obtain a biogas slurry stock solution; and S3. liquid fertilizer production, freely mixing, according to set different formulae, the biogas slurry stock solution with a nitrogen solution, a phosphorus solution, a potassium solution, an organic solution, and a medium and trace element mother liquor, so as to obtain a biogas slurry liquid fertilizer suitable for different crops and having comprehensive nutrients. The present invention also provides an apparatus used for the method for producing a high-efficiency organic liquid fertilizer by using a biogas slurry. The method provided by the present invention is simple in process, low in construction cost, and high in automation degree; the biogas slurry fertilizer prepared by using the method has an increased commercial value, has comprehensive nutrients, is flexible in formula, and can achieve the maximum utilization of the biogas slurry.

Description

一种利用沼液生产高效有机液体肥料的方法及其装置A method and device for producing high-efficiency organic liquid fertilizer from biogas slurry
本申请要求于2021年06月01日提交中国专利局、申请号为“202110609342.3”、发明名称为“一种利用沼液生产高效有机液体肥料的方法及其装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application submitted to the China Patent Office on June 1, 2021, with the application number "202110609342.3" and the title of the invention "A method and device for producing high-efficiency organic liquid fertilizer from biogas slurry", The entire contents of which are incorporated by reference in this application.
技术领域technical field
本发明涉及农业废弃物资源化利用技术领域，更具体地，涉及一种利用沼液生产高效有机液体肥料的方法及其装置。The invention relates to the technical field of resource utilization of agricultural waste, and more specifically relates to a method and a device for producing high-efficiency organic liquid fertilizer from biogas slurry.
背景技术Background technique
沼液指人、畜粪便以及秸秆等各种有机物经过厌氧发酵后的残留物。随着我国养殖业规模化、集约化的发展，目前对其产生的大量畜禽粪污的主要处理方式一般都是通过沼气工程等，即通过厌氧生物降解处理高浓度的有机废水。目前处理沼液的方式可以分为低成本的自然生态净化、高成本的工厂处理化和高附加值的开发利用化，但是这些处理过程会极大增加处理成本；另一方面，虽然沼液是厌氧消化过程的副产品，但其也是农业生产中可广泛使用的环境友好型肥料，是国家倡导的农业废弃物资源化利用的重要内容。Biogas slurry refers to the residue after anaerobic fermentation of various organic matter such as human and animal manure and straw. With the development of scale and intensification of my country's breeding industry, the main treatment methods for the large amount of livestock and poultry manure produced are generally through biogas projects, that is, through anaerobic biodegradation to treat high-concentration organic wastewater. The current treatment methods of biogas slurry can be divided into low-cost natural ecological purification, high-cost factory treatment and high value-added development and utilization, but these treatment processes will greatly increase the treatment cost; on the other hand, although biogas slurry is It is a by-product of the anaerobic digestion process, but it is also an environmentally friendly fertilizer that can be widely used in agricultural production, and is an important content of the resource utilization of agricultural waste advocated by the state.
随着农业生产自动化程度的不断提高，肥料消费呈现高浓度、液体化、复合化的趋势。美国液体肥料占比接近40％，水肥一体化程度高的以色列田间几乎都施用液体肥料，此外英国、比利时、荷兰等国家也在大量使用液体肥料。沼液就是一种很好的液体肥料，其成分主要是水。沼液在作物生长中具有双重作用，一种是作为含氮、磷、钾及各种微量元素的生物肥料，另一种是作为含氨基酸，生长激素和抗生素的生物农药。大量研究表明，沼液是一种优质、全效的有机肥料。在保证作物提质增产的基础上，可以代替或部分代替化学肥料，而且使用范围非常广，不仅可作为基肥，也可作为追肥或者叶面肥使用。With the continuous improvement of the degree of automation of agricultural production, fertilizer consumption presents a trend of high concentration, liquidization and compounding. Liquid fertilizers account for nearly 40% in the United States, and liquid fertilizers are almost always used in Israeli fields with a high degree of water and fertilizer integration. In addition, countries such as the United Kingdom, Belgium, and the Netherlands also use liquid fertilizers in large quantities. Biogas slurry is a good liquid fertilizer, which is mainly composed of water. Biogas slurry has dual functions in crop growth, one is as a biological fertilizer containing nitrogen, phosphorus, potassium and various trace elements, and the other is as a biological pesticide containing amino acids, growth hormones and antibiotics. A large number of studies have shown that biogas slurry is a high-quality, full-effect organic fertilizer. On the basis of ensuring the improvement of crop quality and yield, it can replace or partially replace chemical fertilizers, and has a very wide range of applications. It can be used not only as base fertilizer, but also as top dressing or foliar fertilizer.
国外利用沼液生产商品肥料一般是通过多效蒸汽的方式进行浓缩为主，设备投入成本高，我国现阶段难以大面积推广应用。国内利用沼液生产商品肥料与国外存在较大差异，国内一般通过在沼液中添加辅料(主要是无机营养元素)来保证沼液商品肥符合国家及行业的标准。但是沼液的成分复杂，其中含有大量的微生物、盐分离子与固体悬浊物，直接田间施用容易引发灌水设备的堵塞；同时，沼液除臭不彻底等原因都也造成了含沼液液体肥的商品性不高，造成肥料企业生产 积极性不高。中国发明专利CN105819589A公开了一种去除沼液臭味的方法，该发明仅仅利用高铁酸盐和抑菌剂进行除臭，但是高铁酸盐除臭主要是氧化掉诸如硫化氢(H 2S)、甲硫醇(CH 3SH)、甲基硫(CH 3) 2S)、氨气(NH 3)等恶臭物质，而沼液中的致臭物质不仅包括硫化氢、氨气，还包括吲哚、挥发酚等，仅仅利用高铁酸盐除臭并不能彻底除去沼液中的臭气；同时该方法制得的沼液肥料为沼液原液，使用时还需稀释，若用于灌溉则需要另外添加大量的水。因此，针对沼液的处理需要研究一种新的沼液处理方式以获得除臭更彻底、使用更省水的沼液处理液。 In foreign countries, the use of biogas slurry to produce commercial fertilizers is generally concentrated by means of multi-effect steam, and the cost of equipment investment is high. At this stage, it is difficult to promote and apply it on a large scale in my country. Domestic use of biogas slurry to produce commercial fertilizers is quite different from that of foreign countries. Domestically, auxiliary materials (mainly inorganic nutrients) are added to the biogas slurry to ensure that the biogas slurry commercial fertilizer meets national and industry standards. However, the composition of biogas slurry is complex, which contains a large number of microorganisms, salt ions and solid suspended matter, and direct field application is likely to cause blockage of irrigation equipment; at the same time, reasons such as incomplete deodorization of biogas slurry also cause liquid fertilizers containing biogas slurry The commerciality of fertilizers is not high, resulting in low enthusiasm for fertilizer production. Chinese invention patent CN105819589A discloses a method for removing the odor of biogas slurry. This invention only uses ferrate and bacteriostatic agent for deodorization, but the deodorization of ferrate is mainly to oxidize such as hydrogen sulfide (H 2 S), Methyl mercaptan (CH 3 SH), methyl sulfide (CH 3 ) 2 S), ammonia (NH 3 ) and other odorous substances, while the odorous substances in biogas slurry include not only hydrogen sulfide, ammonia, but also indole , volatile phenol, etc., only using ferrate to deodorize can not completely remove the odor in the biogas slurry; at the same time, the biogas slurry fertilizer prepared by this method is the biogas slurry stock solution, which needs to be diluted when used, and it needs to be used for irrigation. Add plenty of water. Therefore, for the treatment of biogas slurry, it is necessary to study a new biogas slurry treatment method to obtain a more thorough deodorization and more water-saving biogas slurry treatment solution.
发明内容Contents of the invention
本发明所要解决的技术问题是克服上述现有沼液肥料的缺陷和不足，提供一种利用沼液生产高效有机液体肥料的方法，沼液经氧化除臭及多重过滤后，再经微纳米气泡水进一步除臭、除杂得沼液原液；沼液原液经混配得到不同养分配比的液体肥料。The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the above-mentioned existing biogas slurry fertilizers, and provide a method for producing high-efficiency organic liquid fertilizers using biogas slurry. The water is further deodorized and impurity removed to obtain biogas slurry stock solution; the biogas slurry stock solution is mixed to obtain liquid fertilizers with different nutrient ratios.
本发明的第一个目的是提供一种利用沼液生产高效有机液体肥料的方法。The first object of the present invention is to provide a method for producing high-efficiency organic liquid fertilizer from biogas slurry.
本发明的第二个目的是提供一种利用沼液生产高效有机液体肥料的方法所用的装置。The second object of the present invention is to provide a device used in the method of producing high-efficiency organic liquid fertilizer from biogas slurry.
本发明的上述目的是通过以下技术方案给予实现的：Above-mentioned purpose of the present invention is given to realize by following technical scheme:
一种利用沼液生产高效有机液体肥料的方法，包括以下步骤：A method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer, comprising the following steps:
S1.原料初级处理：利用高铁酸盐和抑菌剂对沼液进行初级除臭和杀菌，过滤得初级处理液；S1. Primary treatment of raw materials: use ferrate and bacteriostat to deodorize and sterilize biogas slurry, and filter to obtain primary treatment liquid;
S2.原料再处理：利用微纳米气泡水对初级处理液进一步除臭并除去悬浮的细小颗粒不溶物，过滤得沼液原液；S2. Raw material reprocessing: use micro-nano bubble water to further deodorize the primary treatment liquid and remove suspended fine particle insoluble matter, and filter to obtain biogas slurry;
S3.液体肥料生产：将沼液原液按照设定的不同配方与氮溶液、磷溶液、钾溶液、有机溶液及中微量元素母液进行自由混配，得到适合不同作物的养分全面的沼液液体肥料。S3. Liquid fertilizer production: The biogas slurry stock solution is freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to the different formulas set, to obtain a comprehensive nutrient biogas slurry liquid fertilizer suitable for different crops .
气泡直径在100μm以下称作微米气泡，直径为100nm以下的气泡称为纳米气泡。微纳米气泡直径介于微米气泡和纳米气泡之间，是指气泡发生时直径在数十微米到数百纳米之间的气泡。与普通气泡相比，微纳米气泡具有水中停留时间长、传质效率高、界面电位高、可释放自由基等特点。微纳米气泡表面带有负电荷，并且高于普通气泡，通常微纳米气泡的表面电荷为-50～-30mV，在沼液水中能产生非常浓密而细腻的气泡，不会出现融合增大而破裂的现象。利用微纳米气 泡的带负电性，可以吸附水中带正电的物质，去除水体中的有机悬浮固体或污染物，实现固液分离的净化效果；也有研究发现微纳米气泡具有强氧化性，可使细菌失活。在沼液处理工艺过程中产生气味的物质主要由氨气、硫化氢、吲哚、挥发酚类物质组成。大多数产生气味的物质是有机化合物，这些物质都带有活性基团，容易发生化学反应，特别容易被氧化，本发明中利用微纳米气泡与高铁酸盐的双重氧化可以达到快速除臭的目的。另外，微纳米气泡还可使细菌失活，可减少沼液中有害微生物的繁殖。本申请利用高铁酸盐和微纳米气泡水的双重氧化，快速除去沼液中的臭气源，除臭充分；同时，利用微纳米气泡水还节省了生产液体肥的用水需求。利用本发明的方法制备的液体肥料营养价值及商品性更高，可以满足各种灌溉设施的要求；所述方法操作容易，技术简单，成本较低，可实现沼液的最大化利用。Bubbles with a diameter of less than 100 μm are called microbubbles, and bubbles with a diameter of less than 100 nm are called nanobubbles. The diameter of micro-nano bubbles is between micro-bubbles and nano-bubbles, and refers to bubbles with diameters ranging from tens of microns to hundreds of nanometers when bubbles occur. Compared with ordinary bubbles, micro-nano bubbles have the characteristics of long residence time in water, high mass transfer efficiency, high interface potential, and free radical release. The surface of micro-nano bubbles has a negative charge, which is higher than that of ordinary bubbles. Usually, the surface charge of micro-nano bubbles is -50~-30mV. It can produce very dense and delicate bubbles in biogas slurry water, which will not appear to merge and expand and rupture The phenomenon. Utilizing the negative charge of micro-nano bubbles, it can absorb positively charged substances in water, remove organic suspended solids or pollutants in water, and achieve the purification effect of solid-liquid separation; some studies have also found that micro-nano bubbles have strong oxidizing properties, which can make Bacteria are inactivated. The substances that produce odor during the biogas slurry treatment process are mainly composed of ammonia, hydrogen sulfide, indole, and volatile phenols. Most of the odor-generating substances are organic compounds. These substances have active groups, are prone to chemical reactions, and are particularly easy to be oxidized. In the present invention, the double oxidation of micro-nano bubbles and ferrate can achieve the purpose of rapid deodorization . In addition, micro-nano bubbles can also inactivate bacteria, which can reduce the reproduction of harmful microorganisms in biogas slurry. This application uses the double oxidation of ferrate and micro-nano bubble water to quickly remove the source of odor in the biogas slurry, and the deodorization is sufficient; at the same time, the use of micro-nano bubble water also saves the water demand for the production of liquid fertilizer. The liquid fertilizer prepared by the method of the invention has higher nutritional value and higher commerciality, and can meet the requirements of various irrigation facilities; the method is easy to operate, simple in technology, low in cost, and can realize maximum utilization of biogas slurry.
优选地，所述步骤S1的原料初级处理为先添加沼液质量0.001％～0.02％的高铁酸盐进，混合反应5～12h后再添加沼液质量0.001％～0.02％的抑菌剂，进行初级除臭和杀菌。Preferably, the primary treatment of raw materials in the step S1 is to first add ferrate with a mass of 0.001% to 0.02% of the biogas slurry, and then add a bacteriostatic agent with a mass of 0.001% to 0.02% of the biogas slurry for 5 to 12 hours of mixed reaction. Primary deodorization and sterilization.
优选地，所述步骤S1中过滤是通过第一过滤网和第二过滤网进行双重过滤。Preferably, the filtering in step S1 is double filtering through the first filter and the second filter.
进一步优选地，所述步骤S1中过滤网孔径分别为850μm和250μm。Further preferably, the pore sizes of the filters in the step S1 are respectively 850 μm and 250 μm.
优选地，所述步骤S1中高铁酸盐为高铁酸钾或高铁酸钠，抑菌剂为2-溴-2-硝基-1.3-丙二醇。Preferably, in the step S1, the ferrate is potassium ferrate or sodium ferrate, and the antibacterial agent is 2-bromo-2-nitro-1.3-propanediol.
优选地，所述步骤S2原料再处理是将微纳米气泡水与初级处理液混合，所述微纳米气泡水与沼液的混合体积比为2～5:1。Preferably, the raw material reprocessing in step S2 is to mix the micro-nano-bubble water with the primary treatment liquid, and the mixing volume ratio of the micro-nano-bubble water to the biogas slurry is 2-5:1.
优选地，所述步骤S2中微纳米气泡水来源于纳米气泡发生器循环制水，纳米气泡发生器的气体来源为空气。Preferably, the micro-nano-bubble water in the step S2 comes from the circulating water produced by the nano-bubble generator, and the gas source of the nano-bubble generator is air.
优选地，所述步骤S2中过滤是经过碟片过滤器过滤。Preferably, the filtering in step S2 is filtering through disc filters.
进一步优选地，所述步骤S2中过滤精度为106μm。Further preferably, the filtration precision in the step S2 is 106 μm.
优选地，所述步骤S3中氮溶液包括尿素溶液、尿素硝铵溶液；磷溶液为磷酸一铵溶液；钾溶液为氯化钾溶液。Preferably, the nitrogen solution in step S3 includes urea solution and urea ammonium nitrate solution; the phosphorus solution is monoammonium phosphate solution; and the potassium solution is potassium chloride solution.
一种利用沼液生产高效有机液体肥料的方法所用的装置，所述装置由沼液处理装置与液体肥料混配装置两部分组成。所述沼液处理装置包括：纳米气泡发生器1、气泡水池2、过滤池3、第一过滤网4、第二过滤网5、排渣口6、第一阀门7、第二阀门8、第一离心泵9、第一搅拌机组10、沼液处理池11、第二离心 泵12、过滤组件13；液体肥料混配装置包括沼液原料罐14、第一气动阀门15、第三离心泵16、氮溶液罐17、第二气动阀门18、第四离心泵19、磷溶液罐20、第三气动阀门21、第五离心泵22、钾溶液罐23、第四气动阀门24、第六离心泵25、中微量元素罐26、第五气动阀门27、第七离心泵28、第二搅拌机组29、混合罐30、流量计31、第八离心泵32、电磁阀门33、手动控制器34、远程控制端35；所述气泡水池2一端连接纳米气泡发生器1，另一端连接有第一阀门7；过滤池3内设置有第一过滤网4、第二过滤网5及排渣口6，排渣口6设置在过滤池3的底部，过滤池3靠近过滤液的一端连接有第二阀门8；第一阀门7与第二阀门8共同连接于第一离心泵9，并通过第一离心泵9与沼液处理池11连接，沼液处理池11内安装有第一搅拌机组10；沼液处理池11通过第二离心泵12与过滤组件13一端连接，过滤组件13另一端与沼液原料罐14进料口连接；沼液原料罐14的出料口通过主管道与混合罐30的入料口连接，沼液原料罐14的出料口附近设置有第一气动阀门15和第三离心泵16；氮溶液罐17、磷溶液罐20、钾溶液罐23和中微量元素罐26分别通过支管道与主管道连接，各支管道上分别设置有第二气动阀门18和第四离心泵19、第三气动阀门21和第五离心泵22、第四气动阀门24和第六离心泵25、第五气动阀门27和第七离心泵28；混合罐30的上方安装有第二搅拌机组29；混合罐30通过第八离心泵32与电磁阀门33连接，混合罐30与第八离心泵32之间还设置有流量计31；所述所述沼液处理装置还包括终端控制，所述终端控制包括手动控制器34和/或远程控制端35，所述终端控制用于控制各阀门，进而控制各个罐体的出液量。A device used in the method of producing high-efficiency organic liquid fertilizer by using biogas slurry, the device is composed of a biogas slurry treatment device and a liquid fertilizer mixing device. The biogas slurry treatment device includes: a nanobubble generator 1, a bubble pool 2, a filter tank 3, a first filter 4, a second filter 5, a slag discharge port 6, a first valve 7, a second valve 8, a first A centrifugal pump 9, a first mixing unit 10, a biogas slurry treatment tank 11, a second centrifugal pump 12, and a filter assembly 13; the liquid fertilizer mixing device includes a biogas slurry raw material tank 14, a first pneumatic valve 15, and a third centrifugal pump 16 , nitrogen solution tank 17, second pneumatic valve 18, fourth centrifugal pump 19, phosphorus solution tank 20, third pneumatic valve 21, fifth centrifugal pump 22, potassium solution tank 23, fourth pneumatic valve 24, sixth centrifugal pump 25. Medium and trace element tank 26, fifth pneumatic valve 27, seventh centrifugal pump 28, second mixing unit 29, mixing tank 30, flow meter 31, eighth centrifugal pump 32, electromagnetic valve 33, manual controller 34, remote Control terminal 35; one end of the bubble pool 2 is connected to the nano-bubble generator 1, and the other end is connected to the first valve 7; the first filter screen 4, the second filter screen 5 and the slag discharge port 6 are arranged in the filter tank 3, and the discharge The slag port 6 is arranged at the bottom of the filter tank 3, and the end of the filter tank 3 close to the filtrate is connected with a second valve 8; the first valve 7 and the second valve 8 are jointly connected to the first centrifugal pump 9, and through the first centrifugal pump 9 is connected to the biogas slurry treatment pool 11, and the first mixing unit 10 is installed in the biogas slurry treatment pool 11; the biogas slurry treatment pool 11 is connected to one end of the filter assembly 13 through the second centrifugal pump 12, and the other end of the filter assembly 13 is connected to the biogas slurry raw material The feed port of the tank 14 is connected; the discharge port of the biogas slurry raw material tank 14 is connected with the feed port of the mixing tank 30 through the main pipeline, and a first pneumatic valve 15 and a third centrifugal valve 15 are arranged near the discharge port of the biogas slurry raw material tank 14. Pump 16; Nitrogen solution tank 17, phosphorus solution tank 20, potassium solution tank 23 and medium and trace element tank 26 are respectively connected to the main pipeline through branch pipelines, and each branch pipeline is respectively provided with a second pneumatic valve 18 and a fourth centrifugal pump 19 , the third pneumatic valve 21 and the fifth centrifugal pump 22, the fourth pneumatic valve 24 and the sixth centrifugal pump 25, the fifth pneumatic valve 27 and the seventh centrifugal pump 28; the top of the mixing tank 30 is equipped with a second mixing unit 29; The mixing tank 30 is connected to the electromagnetic valve 33 through the eighth centrifugal pump 32, and a flow meter 31 is also arranged between the mixing tank 30 and the eighth centrifugal pump 32; the biogas slurry treatment device also includes a terminal control, and the terminal control It includes a manual controller 34 and/or a remote control terminal 35, the terminal control is used to control each valve, and then control the liquid output of each tank.
优选地，所述过滤池3采用高低落差式设计，中间使用过滤网相隔，所述过滤网包括第一过滤网4和第二过滤网5。Preferably, the filter pool 3 adopts a high-low drop design, separated by a filter in the middle, and the filter includes a first filter 4 and a second filter 5 .
进一步优选地，所述第一过滤网4和第二过滤网5的孔径分别为850μm与250μm。Further preferably, the pore diameters of the first filter 4 and the second filter 5 are 850 μm and 250 μm, respectively.
优选地，所述沼液处理池11还可根据需要进行好氧发酵或者与好氧微生物进行混合培养。Preferably, the biogas slurry treatment pond 11 can also perform aerobic fermentation or mixed culture with aerobic microorganisms as required.
优选地，所述过滤组件13为碟片过滤器，其过滤精度为106μm。Preferably, the filter assembly 13 is a disc filter with a filter precision of 106 μm.
优选地，所述系统远程控制端35采用PLC编程进行自动化控制。Preferably, the system remote control terminal 35 adopts PLC programming for automatic control.
优选地，所述混配罐30设置有称重装置，以控制不同原料的添加量。Preferably, the mixing tank 30 is provided with a weighing device to control the amount of different raw materials added.
优选地，所述终端控制器35可以根据农艺师采集的田间数据自动计算出所 需的不同原料肥液的用量。Preferably, the terminal controller 35 can automatically calculate the amount of required different raw material manure solutions according to the field data collected by the agronomist.
作为上述装置的一种具体使用方法：As a specific method of use of the above-mentioned device:
将收集的经过厌氧发酵的沼液直接注入过滤池3中，在过滤池3中添加高铁酸盐进行氧化除臭，添加抑菌剂防止细菌滋生，沼液经850μm第一过滤网4和250μm第二过滤网5初过滤，通过控制第二阀门8和第一离心泵9将初过滤后的沼液注入沼液处理池11中。气泡水池2中的水源是经过纳米气泡发生器1连续处理的水源，水中溶解氧浓度达到饱和浓度，水中溶解氧含量接近4ppm。微纳米气泡水通过控制第一阀门7和第一离心泵9注入沼液处理池11中，与沼液充分搅拌后静置，可进一步去除沼液的臭味物质源，同时可去除沼液中悬浮的细小不溶颗粒。处理后的沼液再通过第二离心泵12注入106μm的过滤组件13，沼液经过滤后流入沼液原料罐14中。通过手动控制器34或远程控制端35来控制沼液原料罐14、氮溶液罐17、磷溶液罐20、钾溶液罐23与中微量元素罐26的气动阀门的开合以及各罐体离心泵的运行将各原料注入混合罐30中混合，混合罐30上方设置有第二搅拌机组29，可以保证不同原料间混合均匀，同时混合罐搭载有称重装置用来控制不同原料的添加量，持续搅拌半小时以上即得到所需的配方液体肥料。最后成品沼液肥料通过第八离心泵32输出进行商品化包装或者直接输送至田间，流量计31控制成品肥的抽取量，电磁阀门33来控制出料。The collected anaerobically fermented biogas slurry is directly injected into the filter tank 3, and ferrate is added to the filter tank 3 for oxidation and deodorization, and a bacteriostatic agent is added to prevent bacterial growth. The biogas slurry passes through the first filter screen 4 of 850 μm and The second filter 5 pre-filters, and injects the pre-filtered biogas slurry into the biogas slurry treatment pond 11 by controlling the second valve 8 and the first centrifugal pump 9 . The water source in the bubble pool 2 is the water source continuously treated by the nano-bubble generator 1, the dissolved oxygen concentration in the water reaches a saturated concentration, and the dissolved oxygen content in the water is close to 4ppm. The micro-nano bubble water is injected into the biogas slurry treatment pond 11 through the control of the first valve 7 and the first centrifugal pump 9, fully stirred with the biogas slurry and then left to stand, which can further remove the source of odorous substances in the biogas slurry, and at the same time remove the biogas slurry. Suspended fine insoluble particles. The treated biogas slurry is injected into the 106 μm filter assembly 13 through the second centrifugal pump 12 , and the biogas slurry flows into the biogas slurry raw material tank 14 after being filtered. The opening and closing of the pneumatic valves of the biogas slurry raw material tank 14, the nitrogen solution tank 17, the phosphorus solution tank 20, the potassium solution tank 23 and the medium and trace element tank 26 and the centrifugal pumps of each tank are controlled by the manual controller 34 or the remote control terminal 35 The operation of each raw material is poured into the mixing tank 30 and mixed. The second mixing unit 29 is arranged above the mixing tank 30 to ensure that different raw materials are mixed evenly. At the same time, the mixing tank is equipped with a weighing device to control the amount of different raw materials added. Stir for more than half an hour to get the required formula liquid fertilizer. Finally, the finished biogas slurry fertilizer is output by the eighth centrifugal pump 32 for commercial packaging or directly transported to the field. The flow meter 31 controls the extraction amount of the finished fertilizer, and the electromagnetic valve 33 controls the discharge.
与现有技术相比，本发明具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
(1)本发明提供了一种利用沼液生产高效有机液体肥料的方法，利用高铁酸盐和微纳米气泡水充分除臭，沼液处理前后产生臭味的物质含量明显下，硫化氢的含量下降率达100％，吲哚与挥发酚的含量下降率也分别达到84.67％和77.65％，除臭充分，提高了沼液的商品性；根据作物不同生长需求配制不同的沼液肥料，养分全面、配方灵活、自动化程度高使用灵活，适用范围广泛。(1) The present invention provides a method of using biogas slurry to produce high-efficiency organic liquid fertilizer, using ferrate and micro-nano bubble water to fully deodorize, the content of substances that produce odor before and after biogas slurry treatment is significantly lower, and the content of hydrogen sulfide The reduction rate reached 100%, and the reduction rates of indole and volatile phenol content reached 84.67% and 77.65%, respectively. The deodorization is sufficient and the commerciality of biogas slurry is improved; different biogas slurry fertilizers are prepared according to different growth needs of crops, and the nutrients are comprehensive. , flexible formula, high degree of automation, flexible use, and wide application range.
(2)本发明提供的方法生产工艺简单，建设成本相对较低，利用该方法制备的沼液肥料可以满足各种灌溉设施的要求，可实现沼液的最大化利用。本发明在完全利用沼液的生产过程不产生废液，利用微纳米气泡水大大节约了生产液体肥料所耗费的水源。为实现农业废弃物资源的循环利用，提供了一条行之有效的途径，从根本上解决了沼液的利用难题，实现变“废”为宝与高效利用。(2) The method provided by the present invention has a simple production process and relatively low construction cost. The biogas slurry fertilizer prepared by the method can meet the requirements of various irrigation facilities and can realize the maximum utilization of the biogas slurry. The invention does not produce waste liquid in the production process of fully utilizing the biogas slurry, and greatly saves the water source consumed in the production of liquid fertilizer by using the micro-nano bubble water. In order to realize the recycling of agricultural waste resources, it provides an effective way, fundamentally solves the problem of biogas slurry utilization, and realizes the transformation of "waste" into treasure and efficient utilization.
(3)本发明提供了一种利用沼液生产高效有机液体肥料的方法的设置，所述装置设备简单，适用在养殖业比较集中的区域进行工厂化、规模化的沼液高效有机 液体肥料的生产，可提高沼液的综合利用效益。(3) The present invention provides a method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer. The device and equipment are simple and suitable for industrialization and large-scale production of high-efficiency organic liquid fertilizer from biogas slurry in areas where the aquaculture industry is relatively concentrated. Production can improve the comprehensive utilization benefits of biogas slurry.
附图说明Description of drawings
图1是本发明实施例1一种利用沼液生产高效有机液体肥料的方法所用装置的结构示意图；图1中1-纳米气泡发生器、2-气泡水池、3-过滤池、4-第一过滤网、5-第二过滤网、6-排渣口、7-第一阀门、8-第二阀门、9-第一离心泵、10-第一搅拌机组、11-沼液处理池、12-第二离心泵、13-过滤组件、14-沼液原料罐、15-第一气动阀门、16-第三离心泵、17-氮溶液罐、18-第二气动阀门、19-第四离心泵、20-磷溶液罐、21-第三气动阀门、22-第五离心泵、23-钾溶液罐、24-第四气动阀门、25-第六离心泵、26-中微量元素罐、27-第五气动阀门、28-第七离心泵、29-第二搅拌机组、30-混合罐、31-流量计、32-第八离心泵、33-电磁阀门、34-手动控制器和35-远程控制器。Fig. 1 is a schematic structural view of a device used in a method for producing high-efficiency organic liquid fertilizers from biogas slurry in Example 1 of the present invention; Filter screen, 5-second filter screen, 6-slag outlet, 7-first valve, 8-second valve, 9-first centrifugal pump, 10-first mixing unit, 11-biogas slurry treatment tank, 12 -Second centrifugal pump, 13-filter assembly, 14-biogas slurry raw material tank, 15-first pneumatic valve, 16-third centrifugal pump, 17-nitrogen solution tank, 18-second pneumatic valve, 19-fourth centrifugal Pump, 20-phosphorus solution tank, 21-third pneumatic valve, 22-fifth centrifugal pump, 23-potassium solution tank, 24-fourth pneumatic valve, 25-sixth centrifugal pump, 26-medium trace element tank, 27 -Fifth pneumatic valve, 28-Seventh centrifugal pump, 29-Second mixing unit, 30-Mixing tank, 31-Flow meter, 32-Eighth centrifugal pump, 33-Solenoid valve, 34-Manual controller and 35- remote controller.
具体实施方式Detailed ways
以下结合说明书附图和具体实施例来进一步说明本发明，但实施例并不对本发明做任何形式的限定。除非特别说明，本发明采用的试剂、方法和设备为本技术领域常规试剂、方法和设备。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the embodiments do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the technical field.
除非特别说明，以下实施例所用试剂和材料均为市购。Unless otherwise specified, the reagents and materials used in the following examples are commercially available.
实施例1一种利用沼液生产高效有机液体肥料的方法所用的装置Embodiment 1 A device used in the method of producing high-efficiency organic liquid fertilizer from biogas slurry
一种利用沼液生产高效有机液体肥料的方法所用的装置，所述装置由沼液处理装置与液体肥料混配装置两部分组成。所述沼液处理装置包括：纳米气泡发生器1、气泡水池2、过滤池3、第一过滤网4、第二过滤网5、排渣口6、第一阀门7、第二阀门8、第一离心泵9、第一搅拌机组10、沼液处理池11、第二离心泵12、过滤组件13；液体肥料混配装置包括沼液原料罐14、第一气动阀门15、第三离心泵16、氮溶液罐17、第二气动阀门18、第四离心泵19、磷溶液罐20、第三气动阀门21、第五离心泵22、钾溶液罐23、第四气动阀门24、第六离心泵25、中微量元素罐26、第五气动阀门27、第七离心泵28、第二搅拌机组29、混合罐30、流量计31、第八离心泵32、电磁阀门33、手动控制器34、远程控制端35；所述气泡水池2一端连接纳米气泡发生器1，另一端连接有第一阀门7；过滤池3内设置有第一过滤网4、第二过滤网5及排渣口6，排渣口6设置在过滤池3的底部，过滤池3靠近过滤液的一端连接有第二阀门8；第一阀门7与第二阀门8共同连接于第一离心泵9，并通过第一离心泵9与沼液处理池11连接，沼 液处理池11内安装有第一搅拌机组10；沼液处理池11通过第二离心泵12与过滤组件13一端连接，过滤组件13另一端与沼液原料罐14的进料口连接；沼液原料罐14的出料口通过主管道与混合罐30的入料口连接，沼液原料罐14的出料口附近设置有第一气动阀门15和第三离心泵16；氮溶液罐17、磷溶液罐20、钾溶液罐23和中微量元素罐26分别通过支管道与主管道连接，各支管道上分别设置有第二气动阀门18和第四离心泵19、第三气动阀门21和第五离心泵22、第四气动阀门24和第六离心泵25、第五气动阀门27和第七离心泵28；混合罐30上方安装有第二搅拌机组29；混合罐30通过第八离心泵32与电磁阀门33连接，混合罐30与第八离心泵32之间还设置有流量计31，所述终端控制包括手动控制器34和/或远程控制端35，用于控制各阀门以控制各个罐体的出液量。A device used in the method of producing high-efficiency organic liquid fertilizer by using biogas slurry, the device is composed of a biogas slurry treatment device and a liquid fertilizer mixing device. The biogas slurry treatment device includes: a nanobubble generator 1, a bubble pool 2, a filter tank 3, a first filter 4, a second filter 5, a slag discharge port 6, a first valve 7, a second valve 8, a first A centrifugal pump 9, a first mixing unit 10, a biogas slurry treatment tank 11, a second centrifugal pump 12, and a filter assembly 13; the liquid fertilizer mixing device includes a biogas slurry raw material tank 14, a first pneumatic valve 15, and a third centrifugal pump 16 , nitrogen solution tank 17, second pneumatic valve 18, fourth centrifugal pump 19, phosphorus solution tank 20, third pneumatic valve 21, fifth centrifugal pump 22, potassium solution tank 23, fourth pneumatic valve 24, sixth centrifugal pump 25. Medium and trace element tank 26, fifth pneumatic valve 27, seventh centrifugal pump 28, second mixing unit 29, mixing tank 30, flow meter 31, eighth centrifugal pump 32, electromagnetic valve 33, manual controller 34, remote Control terminal 35; one end of the bubble pool 2 is connected to the nano-bubble generator 1, and the other end is connected to the first valve 7; the first filter screen 4, the second filter screen 5 and the slag discharge port 6 are arranged in the filter tank 3, and the discharge The slag port 6 is arranged at the bottom of the filter tank 3, and the end of the filter tank 3 close to the filtrate is connected with a second valve 8; the first valve 7 and the second valve 8 are jointly connected to the first centrifugal pump 9, and through the first centrifugal pump 9 is connected to the biogas slurry treatment pool 11, and the first mixing unit 10 is installed in the biogas slurry treatment pool 11; the biogas slurry treatment pool 11 is connected to one end of the filter assembly 13 through the second centrifugal pump 12, and the other end of the filter assembly 13 is connected to the biogas slurry raw material The feed port of the tank 14 is connected; the discharge port of the biogas slurry raw material tank 14 is connected with the feed port of the mixing tank 30 through the main pipeline, and a first pneumatic valve 15 and a third pneumatic valve 15 are arranged near the discharge port of the biogas slurry raw material tank 14. Centrifugal pump 16; Nitrogen solution tank 17, phosphorus solution tank 20, potassium solution tank 23 and medium and trace element tank 26 are respectively connected to the main pipeline through branch pipelines, and the second pneumatic valve 18 and the fourth centrifugal pump are respectively arranged on each branch pipeline 19. The third pneumatic valve 21 and the fifth centrifugal pump 22, the fourth pneumatic valve 24 and the sixth centrifugal pump 25, the fifth pneumatic valve 27 and the seventh centrifugal pump 28; the second mixing unit 29 is installed above the mixing tank 30; The mixing tank 30 is connected to the electromagnetic valve 33 through the eighth centrifugal pump 32, and a flow meter 31 is also arranged between the mixing tank 30 and the eighth centrifugal pump 32. The terminal control includes a manual controller 34 and/or a remote control terminal 35, It is used to control the valves to control the liquid output of each tank.
所述装置的使用方法和原理：The use method and principle of the device:
将收集的经过厌氧发酵的沼液直接注入过滤池3中，在过滤池3中添加高铁酸盐进行氧化除臭，添加抑菌剂防止细菌滋生，沼液经850μm第一过滤网4和250μm第二过滤网5初过滤，通过控制第二阀门8和第一离心泵9将初过滤后的沼液注入沼液处理池11中。气泡水池2中的水源是经过纳米气泡发生器1连续处理的水源，水中溶解氧浓度达到饱和浓度，水中溶解氧含量接近4ppm。微纳米气泡水通过控制第一阀门7和第一离心泵9注入沼液处理池中，与沼液充分搅拌后静置，可进一步去除沼液的臭味物质源，同时可去除沼液中悬浮的细小不溶颗粒。处理后的沼液再通过第二离心泵12注入106μm的过滤组件13，沼液经过滤后流入沼液原料罐14中。通过手动控制器34或远程控制端35来控制沼液原料罐14、氮溶液罐17、磷溶液罐20、钾溶液罐23与中微量元素罐26的气动阀门的开合以及各罐体离心泵的运行将各原料注入混合罐30中混合，混合罐30中设置有第二搅拌机组29，可以保证不同原料间混合均匀，同时混合罐搭载有称重装置用来控制不同原料的添加量，持续搅拌半小时以上即得到所需的配方液体肥料。最后成品沼液肥料通过第八离心泵32输出进行商品化包装或者直接输送至田间，流量计31控制成品肥的抽取量，电磁阀门33来控制出料。The collected anaerobically fermented biogas slurry is directly injected into the filter tank 3, and ferrate is added to the filter tank 3 for oxidation and deodorization, and a bacteriostatic agent is added to prevent bacterial growth. The biogas slurry passes through the first filter screen 4 of 850 μm and The second filter 5 pre-filters, and injects the pre-filtered biogas slurry into the biogas slurry treatment pond 11 by controlling the second valve 8 and the first centrifugal pump 9 . The water source in the bubble pool 2 is the water source continuously treated by the nano-bubble generator 1, the dissolved oxygen concentration in the water reaches a saturated concentration, and the dissolved oxygen content in the water is close to 4ppm. The micro-nano bubble water is injected into the biogas slurry treatment pond through the control of the first valve 7 and the first centrifugal pump 9, fully stirred with the biogas slurry and then left to stand, which can further remove the source of odorous substances in the biogas slurry, and at the same time remove suspended substances in the biogas slurry. of fine insoluble particles. The treated biogas slurry is injected into the 106 μm filter assembly 13 through the second centrifugal pump 12 , and the biogas slurry flows into the biogas slurry raw material tank 14 after being filtered. The opening and closing of the pneumatic valves of the biogas slurry raw material tank 14, the nitrogen solution tank 17, the phosphorus solution tank 20, the potassium solution tank 23 and the medium and trace element tank 26 and the centrifugal pumps of each tank are controlled by the manual controller 34 or the remote control terminal 35 The operation of each raw material is poured into the mixing tank 30 and mixed. The second mixing unit 29 is arranged in the mixing tank 30, which can ensure that different raw materials are mixed evenly. At the same time, the mixing tank is equipped with a weighing device to control the amount of different raw materials added. Stir for more than half an hour to get the required formula liquid fertilizer. Finally, the finished biogas slurry fertilizer is output by the eighth centrifugal pump 32 for commercial packaging or directly transported to the field. The flow meter 31 controls the extraction amount of the finished fertilizer, and the electromagnetic valve 33 controls the discharge.
实施例2一种利用沼液生产高效有机液体肥料的方法Embodiment 2 A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer
一种利用沼液生产高效有机液体肥料的方法，包括以下步骤：A method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer, comprising the following steps:
(1)原料初级处理：在过滤池中加入沼液质量0.005％的高铁酸钾，混合后反应时间10h进行氧化除臭，除臭完成后添加沼液质量0.01％的2-溴-2-硝基-1.3- 丙二醇抑菌剂防止有害微生物重新滋生；同时，利用850μm与250μm的双重滤网对经厌氧发酵的沼液进行双重过滤的初级处理液。(1) Primary treatment of raw materials: Potassium ferrate with 0.005% biogas slurry mass is added to the filter tank, and the reaction time after mixing is 10h for oxidation and deodorization. After deodorization is completed, 2-bromo-2-nitrate with 0.01% biogas slurry mass is added Base-1.3-propanediol bacteriostatic agent to prevent harmful microorganisms from re-breeding; at the same time, use 850μm and 250μm double filter screens to double-filter the primary treatment liquid of the anaerobic fermentation biogas slurry.
(2)原料再处理：利用纳米气泡发生器制备含大量微纳米气泡的水源，混合池中注入富含微纳米气泡的水源和沼液的初级处理液，所述微纳米气泡水和沼液的初级处理液体积比为5:1，利用搅拌机搅拌并静置24h，利用微纳米气泡充分去除臭味物质和悬浮的细小颗粒不溶物，再处理之后的沼液再经泵③注入过滤精度为106μm的碟片过滤器组，过滤后得沼液原液。(2) Raw material reprocessing: use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry The volume ratio of the primary treatment liquid is 5:1. Stir it with a mixer and let it stand for 24 hours. Use micro-nano bubbles to fully remove odorous substances and suspended fine particles of insoluble matter. After retreatment, the biogas slurry is injected by pump ③ and the filtration accuracy is 106 μm. The disc filter group is used to obtain biogas slurry stock solution after filtration.
(3)液体肥料生产：将沼液原液作为生产液体肥料的原料，按照设定的不同配方与氮溶液、磷溶液、钾溶液、有机溶液及中微量元素母液进行自由混配，得到适合不同作物的养分全面的可应用于各种灌溉设施的含沼液液体肥料。其中氮溶液为尿素溶液，磷溶液为磷酸一铵溶液，钾溶液为氯化钾溶液，中微量元素溶液来源为各中微量元素的混合溶液。(3) Liquid fertilizer production: The biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients. The nitrogen solution is a urea solution, the phosphorus solution is a monoammonium phosphate solution, the potassium solution is a potassium chloride solution, and the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
实施例3一种利用沼液生产高效有机液体肥料的方法Embodiment 3 A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer
一种利用沼液生产高效有机液体肥料的方法，包括以下步骤：A method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer, comprising the following steps:
(1)原料初级处理：在过滤池中加入沼液质量0.01％的高铁酸钾，混合后反应时间10h进行氧化除臭，除臭完成后添加沼液质量0.01％的2-溴-2-硝基-1.3-丙二醇抑菌剂防止有害微生物重新滋生；同时，利用850μm与250μm的双重滤网对经厌氧发酵的沼液进行双重过滤的初级处理液。(1) Primary treatment of raw materials: Potassium ferrate with 0.01% biogas slurry mass is added to the filter tank, and the reaction time after mixing is 10h for oxidation and deodorization. After deodorization is completed, 2-bromo-2-nitrate with 0.01% biogas slurry mass is added Base-1.3-propanediol bacteriostatic agent to prevent harmful microorganisms from re-breeding; at the same time, use 850μm and 250μm double filter screens to double-filter the primary treatment liquid of the anaerobic fermentation biogas slurry.
(2)原料再处理：利用纳米气泡发生器制备含大量微纳米气泡的水源，混合池中注入富含微纳米气泡的水源和沼液的初级处理液，所述微纳米气泡水和沼液的初级处理液体积比为5:1，利用搅拌机搅拌并静置24h，利用微纳米气泡充分去除臭味物质和悬浮的细小颗粒不溶物，再处理之后的沼液再经泵③注入过滤精度为106μm的碟片过滤器组，过滤后得沼液原液。(2) Raw material reprocessing: use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry The volume ratio of the primary treatment liquid is 5:1. Stir it with a mixer and let it stand for 24 hours. Use micro-nano bubbles to fully remove odorous substances and suspended fine particles of insoluble matter. After retreatment, the biogas slurry is injected by pump ③ and the filtration accuracy is 106 μm. The disc filter group is used to obtain biogas slurry stock solution after filtration.
(3)液体肥料生产：将沼液原液作为生产液体肥料的原料，按照设定的不同配方与氮溶液、磷溶液、钾溶液、有机溶液及中微量元素母液进行自由混配，得到适合不同作物的养分全面的可应用于各种灌溉设施的含沼液液体肥料。其中氮溶液为尿素溶液，磷溶液为磷酸一铵溶液，钾溶液为氯化钾溶液，中微量元素溶液来源为各中微量元素的混合溶液。(3) Liquid fertilizer production: The biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients. The nitrogen solution is a urea solution, the phosphorus solution is a monoammonium phosphate solution, the potassium solution is a potassium chloride solution, and the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
实施例4一种利用沼液生产高效有机液体肥料的方法Embodiment 4 A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer
一种利用沼液生产高效有机液体肥料的方法，包括以下步骤：A method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer, comprising the following steps:
(1)原料初级处理：在过滤池中加入沼液质量0.005％的高铁酸钾，混合后反应时间10h进行氧化除臭，除臭完成后添加沼液质量0.01％的2-溴-2-硝基-1.3-丙二醇抑菌剂防止有害微生物重新滋生；同时，利用850μm与250μm的双重滤网对经厌氧发酵的沼液进行双重过滤的初级处理液。(1) Primary treatment of raw materials: Potassium ferrate with 0.005% biogas slurry mass is added to the filter tank, and the reaction time after mixing is 10h for oxidation and deodorization. After deodorization is completed, 2-bromo-2-nitrate with 0.01% biogas slurry mass is added Base-1.3-propanediol bacteriostatic agent to prevent harmful microorganisms from re-breeding; at the same time, use 850μm and 250μm double filter screens to double-filter the primary treatment liquid of the anaerobic fermentation biogas slurry.
(2)原料再处理：利用纳米气泡发生器制备含大量微纳米气泡的水源，混合池中注入富含微纳米气泡的水源和沼液的初级处理液，所述微纳米气泡水和沼液的初级处理液体积比为2:1，利用搅拌机搅拌并静置24h，利用微纳米气泡充分去除臭味物质和悬浮的细小颗粒不溶物，再处理之后的沼液再经泵③注入过滤精度为106μm的碟片过滤器组，过滤后得沼液原液。(2) Raw material reprocessing: use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry The volume ratio of the primary treatment liquid is 2:1. Stir it with a mixer and let it stand for 24 hours. Use micro-nano bubbles to fully remove odorous substances and suspended fine particles of insoluble matter. After retreatment, the biogas slurry is injected by pump ③ and the filtration accuracy is 106 μm. The disc filter group is used to obtain biogas slurry stock solution after filtration.
(3)液体肥料生产：将沼液原液作为生产液体肥料的原料，按照设定的不同配方与氮溶液、磷溶液、钾溶液、有机溶液及中微量元素母液进行自由混配，得到适合不同作物的养分全面的可应用于各种灌溉设施的含沼液液体肥料。其中氮溶液为尿素溶液，磷溶液为磷酸一铵溶液，钾溶液为氯化钾溶液，中微量元素溶液来源为各中微量元素的混合溶液。(3) Liquid fertilizer production: The biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients. The nitrogen solution is a urea solution, the phosphorus solution is a monoammonium phosphate solution, the potassium solution is a potassium chloride solution, and the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
实施例5一种利用沼液生产高效有机液体肥料的方法Embodiment 5 A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer
一种利用沼液生产高效有机液体肥料的方法，包括以下步骤：A method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer, comprising the following steps:
(1)原料初级处理：在过滤池中加入沼液质量0.01％的高铁酸钾，混合后反应时间10h进行氧化除臭，除臭完成后添加沼液质量0.01％的2-溴-2-硝基-1.3-丙二醇抑菌剂防止有害微生物重新滋生；同时，利用850μm与250μm的双重滤网对经厌氧发酵的沼液进行双重过滤的初级处理液。(1) Primary treatment of raw materials: Potassium ferrate with 0.01% biogas slurry mass is added to the filter tank, and the reaction time after mixing is 10h for oxidation and deodorization. After deodorization is completed, 2-bromo-2-nitrate with 0.01% biogas slurry mass is added Base-1.3-propanediol bacteriostatic agent to prevent harmful microorganisms from re-breeding; at the same time, use 850μm and 250μm double filter screens to double-filter the primary treatment liquid of the anaerobic fermentation biogas slurry.
(2)原料再处理：利用纳米气泡发生器制备含大量微纳米气泡的水源，混合池中注入富含微纳米气泡的水源和沼液的初级处理液，所述微纳米气泡水和沼液的初级处理液体积比为2:1，利用搅拌机搅拌并静置24h，利用微纳米气泡充分去除臭味物质和悬浮的细小颗粒不溶物，再处理之后的沼液再经过滤精度为106μm的碟片过滤器组，过滤后得沼液原液。(2) Raw material reprocessing: use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry The volume ratio of the primary treatment liquid is 2:1. Stir it with a mixer and let it stand for 24 hours. Use the micro-nano bubbles to fully remove the odorous substances and suspended fine particle insoluble matter. The filter group is used to obtain biogas slurry stock solution after filtration.
(3)液体肥料生产：将沼液原液作为生产液体肥料的原料，按照设定的不同配方与氮溶液、磷溶液、钾溶液、有机溶液及中微量元素母液进行自由混配，得到适合不同作物的养分全面的可应用于各种灌溉设施的含沼液液体肥料。其中氮溶液为尿素溶液，磷溶液为磷酸一铵溶液，钾溶液为氯化钾溶液，中微量元素溶液来源为各中微量元素的混合溶液。(3) Liquid fertilizer production: The biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients. The nitrogen solution is a urea solution, the phosphorus solution is a monoammonium phosphate solution, the potassium solution is a potassium chloride solution, and the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
对比例1Comparative example 1
一种利用沼液生产高效有机液体肥料的方法，包括以下步骤：A method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer, comprising the following steps:
(1)原料处理：在过滤池中加入沼液质量0.02％的高铁酸钾，混合后反应时间10h进行氧化除臭，除臭完成后添加沼液质量0.01％的2-溴-2-硝基-1.3-丙二醇抑菌剂防止有害微生物重新滋生；同时，利用850μm与250μm的双重滤网对经厌氧发酵的沼液进行双重过滤的初级处理液；初级处理液再经过滤精度为106μm的碟片过滤器组，过滤后得沼液原液。(1) Raw material treatment: Add potassium ferrate with 0.02% biogas slurry mass in the filter tank, and oxidize and deodorize after mixing for 10 hours. After deodorization, add 2-bromo-2-nitro with 0.01% biogas slurry mass -1.3-Propanediol antibacterial agent prevents harmful microorganisms from re-breeding; at the same time, the primary treatment liquid is double-filtered by anaerobic fermentation biogas slurry with a double filter of 850 μm and 250 μm; the primary treatment liquid is then filtered through a plate with a filtration accuracy of 106 μm A sheet filter set, after filtration, the raw liquid of the biogas slurry is obtained.
(2)液体肥料生产：将沼液原液作为生产液体肥料的原料，按照设定的不同配方与氮溶液、磷溶液、钾溶液、有机溶液及中微量元素母液进行自由混配，得到适合不同作物的养分全面的可应用于各种灌溉设施的含沼液液体肥料。其中氮溶液为尿素溶液，磷溶液为磷酸一铵溶液，钾溶液为氯化钾溶液，中微量元素溶液来源为各中微量元素的混合溶液。(2) Liquid fertilizer production: The biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution, and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients. The nitrogen solution is a urea solution, the phosphorus solution is a monoammonium phosphate solution, the potassium solution is a potassium chloride solution, and the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
对比例2Comparative example 2
一种利用沼液生产高效有机液体肥料的方法，包括以下步骤：A method for utilizing biogas slurry to produce high-efficiency organic liquid fertilizer, comprising the following steps:
(1)原料初级处理：利用850μm与250μm的双重滤网对经厌氧发酵的沼液进行双重过滤的初级处理液。(1) Primary treatment of raw materials: The primary treatment liquid is double-filtered biogas slurry undergoing anaerobic fermentation by using double filter screens of 850 μm and 250 μm.
(2)原料再处理：利用纳米气泡发生器制备含大量微纳米气泡的水源，混合池中注入富含微纳米气泡的水源和沼液的初级处理液，所述微纳米气泡水和沼液的初级处理液体积比为6:1，利用搅拌机搅拌并静置24h，利用微纳米气泡充分去除臭味物质和悬浮的细小颗粒不溶物，再处理之后的沼液再经过滤精度为106μm的碟片过滤器组，过滤后得沼液原液。(2) Raw material reprocessing: use a nano-bubble generator to prepare a water source containing a large number of micro-nano bubbles, inject the water source rich in micro-nano bubbles and the primary treatment liquid of biogas slurry into the mixing tank, and the micro-nano bubble water and biogas slurry The volume ratio of the primary treatment liquid is 6:1. Stir it with a mixer and let it stand for 24 hours. Use micro-nano bubbles to fully remove odorous substances and suspended fine particles of insoluble matter. After retreatment, the biogas slurry is filtered through a disc with a precision of 106 μm The filter group is used to obtain biogas slurry stock solution after filtration.
(3)液体肥料生产：将沼液原液作为生产液体肥料的原料，按照设定的不同配方与氮溶液、磷溶液、钾溶液、有机溶液及中微量元素母液进行自由混配，得到适合不同作物的养分全面的可应用于各种灌溉设施的含沼液液体肥料。其中氮溶液为尿素溶液，磷溶液为磷酸一铵溶液，钾溶液为氯化钾溶液，中微量元素溶液来源为各中微量元素的混合溶液。(3) Liquid fertilizer production: The biogas slurry is used as the raw material for the production of liquid fertilizers, and freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution and medium and trace element mother liquor according to different formulas to obtain suitable for different crops. It is a liquid fertilizer containing biogas slurry that can be applied to various irrigation facilities with comprehensive nutrients. The nitrogen solution is a urea solution, the phosphorus solution is a monoammonium phosphate solution, the potassium solution is a potassium chloride solution, and the source of the medium and trace element solution is a mixed solution of various medium and trace elements.
实施例6沼液处理方法对沼液的影响The influence of embodiment 6 biogas slurry treatment method on biogas slurry
1、沼液处理方法对沼液产生臭味物质的影响1. Effect of biogas slurry treatment method on odorous substances produced by biogas slurry
对实施例2～5沼液处理前后产生臭味的相关成分进行分析，采用纳氏比色法测定氨气的浓度；采用碘量法测定硫化氢的浓度；采用HPLC法测定吲哚的浓度； 采用4-氨基安替比林分光光度法分别测定挥发酚的浓度。Analyze the relevant components of the odor before and after the treatment of the biogas slurry in Examples 2 to 5, and use the Nessler colorimetric method to measure the concentration of ammonia; adopt the iodometric method to measure the concentration of hydrogen sulfide; adopt the HPLC method to measure the concentration of indole; The concentrations of volatile phenols were determined by 4-aminoantipyrine spectrophotometry.
沼液处理前后产生臭味物质含量的变化如表1所示。The changes in the content of odorous substances before and after biogas slurry treatment are shown in Table 1.
表1：沼液处理前后产生臭味物质含量的变化Table 1: Changes in the content of odorous substances before and after biogas slurry treatment
Figure PCTCN2022107603-appb-000001
Figure PCTCN2022107603-appb-000001
从表1可以看出，沼液处理前后产生臭味的物质源氨气、硫化氢、吲哚、挥发酚的含量均显著降低，联合除臭的作用下处理后的沼液中均未检测出硫化氢，其含量的下降率达100％；吲哚、挥发酚的含量下降幅度也非常明显。同时通过对比例也发现，单独使用更高用量的高铁酸钾或微纳米气泡的水源除臭的效果均低于高铁酸钾与微纳米气泡的水源小用量联合处理的效果。It can be seen from Table 1 that the contents of ammonia, hydrogen sulfide, indole, and volatile phenol, which are the source of odor before and after the biogas slurry treatment, were significantly reduced, and none of them were detected in the treated biogas slurry under the combined deodorization. For hydrogen sulfide, the decrease rate of its content reaches 100%; the decrease rate of the content of indole and volatile phenol is also very obvious. At the same time, it is also found through comparative examples that the deodorization effect of the water source using a higher amount of potassium ferrate or micro-nano bubbles alone is lower than the combined treatment of potassium ferrate and micro-nano bubbles in a small amount.
2、沼液处理方法对沼液养分含量的影响2. Effect of biogas slurry treatment method on nutrient content of biogas slurry
对实施例2～5沼液处理前后沼液养分含量进行分析，采用蒸馏后滴定法测定总氮浓度；采用抗坏血酸显色分光光度法测定总磷浓度；采用重铬酸钾滴定法测定总有机碳浓度。Analyze the nutrient content of the biogas slurry before and after the biogas slurry treatment in Examples 2-5, and measure the total nitrogen concentration by titration after distillation; measure the total phosphorus concentration by using ascorbic acid color spectrophotometry; measure the total organic carbon by using potassium dichromate titration concentration.
沼液处理前后养分含量的变化如表2所示。The changes in nutrient content before and after biogas slurry treatment are shown in Table 2.
表2：沼液处理前后养分含量的变化Table 2: Changes in nutrient content before and after biogas slurry treatment
Figure PCTCN2022107603-appb-000002
Figure PCTCN2022107603-appb-000002
从表2可以看出，沼液处理前后营养成分均呈下降的趋势，实施例2与实施例3由于稀释比例较大，因此其养分含量下降比较大。对比例处理后养分含量也呈现下降的趋势，但下降幅度有限。It can be seen from Table 2 that the nutrient components before and after biogas slurry treatment showed a downward trend, and the nutrient content of Example 2 and Example 3 decreased relatively greatly due to the large dilution ratio. The nutrient content also showed a downward trend after the treatment of the control ratio, but the decline was limited.
3、沼液处理方法对沼液微生物数量的影响3. Effects of biogas slurry treatment methods on the number of microorganisms in biogas slurry
对实施例2～5沼液处理前后沼液微生物数量进行分析，采用稀释平板法进行 测定。The biogas slurry microbial quantity before and after the biogas slurry treatment of Examples 2 to 5 was analyzed, and the dilution plate method was used to measure.
沼液处理前后微生物数量的变化如表3所示The changes in the number of microorganisms before and after biogas slurry treatment are shown in Table 3
表3：沼液处理前后微生物数量的变化Table 3: Changes in the number of microorganisms before and after biogas slurry treatment
Figure PCTCN2022107603-appb-000003
Figure PCTCN2022107603-appb-000003
从表3可以看出，沼液处理后微生物的数量下降幅度明显，尤其是联合除臭的处理，粪大肠杆菌均未检测到。但是也可见，高铁酸钾添加量与纳米气泡水的混合比例大小，对微生物的影响不大。通过对比例也发现，单独处理方式下沼液中残留的微生物的数量仍然大量存在，这可能会对后期的施用造成一定的风险，相比较而言，联合处理下沼液肥的施用安全系数更高。It can be seen from Table 3 that the number of microorganisms decreased significantly after biogas slurry treatment, especially in the combined deodorization treatment, fecal coliform bacteria were not detected. However, it can also be seen that the mixing ratio of the amount of potassium ferrate added to the nano-bubble water has little effect on microorganisms. Through the comparative ratio, it is also found that the number of residual microorganisms in the biogas slurry under the single treatment method still exists in large quantities, which may cause certain risks to the later application. In comparison, the application safety factor of the biogas slurry fertilizer under the combined treatment is higher.
实施例7沼液液体肥料田间应用试验 Embodiment 7 Biogas slurry liquid fertilizer field application test
(1)试验背景(1) Test background
试验地点：广西壮族自治区防城港市防城区华石镇秀坡村Test site: Xiupo Village, Huashi Town, Fangcheng District, Fangchenggang City, Guangxi Zhuang Autonomous Region
试验时间：2020年3月-2020年8月Trial time: March 2020-August 2020
试验作物：西瓜Test crop: watermelon
试验土壤：沙土Test soil: sandy soil
灌溉设施：滴灌Irrigation facilities: drip irrigation
试验方案：本试验共设置本发明实施例2制备的沼液配制液体复合肥、固体复合肥与常规施肥(仅复合肥)两个处理。常规施肥采用当地种植户普遍采用的成都市新都化工股份有限公司“嘉施利”大量元素水溶肥(N:P:K为16：16：16)。Test plan: In this test, two treatments were set up: liquid compound fertilizer prepared from biogas slurry prepared in Example 2 of the present invention, solid compound fertilizer and conventional fertilization (only compound fertilizer). Conventional fertilization adopts "Garshli" macroelement water-soluble fertilizer (N:P:K 16:16:16) widely used by local growers.
沼液配制液体复合肥配方为：沼液处理原液20份，氮溶液7份，磷溶液4份，钾溶液8份，中微量元素液0.1份，充分混匀后加入适量的水，利用注肥泵将肥液注入田间灌溉管道，同时确保田间肥水EC值为4以下。常规施肥为大量水溶颗粒肥倒入溶肥池溶解后通过滴灌施入田间。The formula for preparing liquid compound fertilizer from biogas slurry is: 20 parts of biogas slurry treatment stock solution, 7 parts of nitrogen solution, 4 parts of phosphorus solution, 8 parts of potassium solution, and 0.1 part of medium and trace element solution. The pump injects the fertilizer liquid into the field irrigation pipeline, and at the same time ensures that the EC value of the fertilizer and water in the field is below 4. Conventional fertilization is to pour a large amount of water-soluble granular fertilizer into the fertilizer-dissolving tank to dissolve, and then apply it to the field through drip irrigation.
(2)试验结果如表4、表5所示。(2) The test results are shown in Table 4 and Table 5.
表4：沼液肥与常规肥对西瓜根系生长的影响Table 4: Effects of biogas slurry fertilizer and conventional fertilizer on watermelon root growth
Figure PCTCN2022107603-appb-000004
Figure PCTCN2022107603-appb-000004
Figure PCTCN2022107603-appb-000005
Figure PCTCN2022107603-appb-000005
表5：沼液肥与常规肥对西瓜产量的影响Table 5: Effects of biogas slurry fertilizer and conventional fertilizer on watermelon yield
Figure PCTCN2022107603-appb-000006
Figure PCTCN2022107603-appb-000006
从表4、5中可知，沼液肥可明显促进西瓜根系的生长，总根长、总根表面积和根尖数与常规肥相比均有明显增加，与常规肥，施用沼液肥西瓜的总根长、总根表面积和根尖数分别增加46.07％、47.09％和51.83％；沼液肥对西瓜增产效果也非常明显，增产率达到33.56％。It can be seen from Table 4 and 5 that biogas slurry fertilizer can significantly promote the growth of watermelon roots, and the total root length, total root surface area and root tip number are significantly increased compared with conventional fertilizers. The length, total root surface area and root tip number increased by 46.07%, 47.09% and 51.83% respectively; the effect of biogas slurry fertilizer on watermelon production was also very obvious, and the yield increase rate reached 33.56%.
利用本发明方法制备的沼液肥进行灌溉，过滤器与滴头均未出现堵塞，灌溉设施运转正常。When the biogas slurry fertilizer prepared by the method of the invention is used for irrigation, neither the filter nor the dripper is clogged, and the irrigation facilities operate normally.
上述实施例为本发明较佳的实施方式，但本发明的实施方式并不受上述实施例的限制，其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (8)

  1. 一种利用沼液生产高效有机液体肥料的方法，其特征在于，包括以下步骤：A method of utilizing biogas slurry to produce high-efficiency organic liquid fertilizer, characterized in that it comprises the following steps:
    S1.原料初级处理：利用高铁酸盐和抑菌剂对沼液进行初级除臭和杀菌，过滤得初级处理液；S1. Primary treatment of raw materials: use ferrate and bacteriostat to deodorize and sterilize biogas slurry, and filter to obtain primary treatment liquid;
    S2.原料再处理：利用微纳米气泡水对所述初级处理液进一步除臭并除去悬浮的细小颗粒不溶物，过滤得沼液原液；S2. Raw material reprocessing: use micro-nano bubble water to further deodorize the primary treatment liquid and remove suspended fine particle insoluble matter, and filter to obtain biogas slurry;
    S3.液体肥料生产：将所述沼液原液按照设定的不同配方与氮溶液、磷溶液、钾溶液、有机溶液及中微量元素母液进行自由混配，得到适合不同作物的养分全面的沼液液体肥料。S3. Liquid fertilizer production: The biogas slurry stock solution is freely mixed with nitrogen solution, phosphorus solution, potassium solution, organic solution, and medium and trace element mother liquor according to different formulas to obtain biogas slurry with comprehensive nutrients suitable for different crops liquid fertilizer.
  2. 根据权利要求1所述的方法，其特征在于，所述步骤S1的原料初级处理为先添加沼液质量0.001％～0.02％的高铁酸盐，混合反应5～12h后再添加沼液质量0.001％～0.02％的抑菌剂，进行初级除臭和杀菌。The method according to claim 1, characterized in that the primary treatment of the raw material in the step S1 is to first add ferrate with a mass of 0.001% to 0.02% of the biogas slurry, and then add 0.001% of the mass of the biogas slurry after mixing for 5 to 12 hours ~0.02% bacteriostatic agent for primary deodorization and sterilization.
  3. 根据权利要求1所述的方法，其特征在于，所述步骤S1中过滤是利用两个过滤网进行双重过滤。The method according to claim 1, characterized in that the filtering in the step S1 is double filtering by using two filter screens.
  4. 根据权利要求1所述的方法，其特征在于，所述两个过滤网的孔径分别为850μm和250μm。The method according to claim 1, characterized in that the apertures of the two filter screens are 850 μm and 250 μm respectively.
  5. 根据权利要求1或2所述的方法，其特征在于，所述步骤S1中高铁酸盐为高铁酸钾或高铁酸钠，抑菌剂为2-溴-2-硝基-1.3-丙二醇。The method according to claim 1 or 2, characterized in that, in the step S1, the ferrate is potassium ferrate or sodium ferrate, and the antibacterial agent is 2-bromo-2-nitro-1.3-propanediol.
  6. 根据权利要求1所述的方法，其特征在于，所述步骤S2原料再处理是将微纳米气泡水与初级处理液混合，所述微纳米气泡水与沼液混合的体积比为2～5:1。The method according to claim 1, characterized in that, the step S2 raw material reprocessing is to mix the micro-nano bubble water with the primary treatment liquid, and the volume ratio of the micro-nano bubble water mixed with the biogas slurry is 2 to 5: 1.
  7. 一种利用沼液生产高效有机液体肥料的方法所用的装置，其特征在于，所述装置由沼液处理装置和液体肥料混配装置两部分组成；A device used in the method of producing high-efficiency organic liquid fertilizer from biogas slurry, characterized in that the device is composed of a biogas slurry treatment device and a liquid fertilizer mixing device;
    所述沼液处理装置包括：纳米气泡发生器(1)、气泡水池(2)、过滤池(3)、第一过滤网(4)、第二过滤网(5)、排渣口(6)、第一阀门(7)、第二阀门(8)、第一离心泵(9)、第一搅拌机组(10)、沼液处理池(11)、第二离心泵(12)、过滤组件(13)；The biogas slurry treatment device includes: nano-bubble generator (1), bubble pool (2), filter tank (3), first filter screen (4), second filter screen (5), slag outlet (6) , the first valve (7), the second valve (8), the first centrifugal pump (9), the first mixing unit (10), the biogas slurry treatment pond (11), the second centrifugal pump (12), the filter assembly ( 13);
    所述液体肥料混配装置包括：沼液原料罐(14)、第一气动阀门(15)、第三离心泵(16)、氮溶液罐(17)、第二气动阀门(18)、第四离心泵(19)、磷溶液罐(20)、第三气动阀门(21)、第五离心泵(22)、钾溶液罐(23)、第四气动阀门(24)、第六离心泵(25)、中微量元素罐(26)、第五气动阀门(27)、第七离心泵(28)、第二搅拌机组(29)、混合罐(30)、流量计(31)、第八离心泵(32)、电磁阀门(33)、手动控制器(34)、 远程控制端(35)。The liquid fertilizer mixing device includes: a biogas slurry raw material tank (14), a first pneumatic valve (15), a third centrifugal pump (16), a nitrogen solution tank (17), a second pneumatic valve (18), a fourth Centrifugal pump (19), phosphorus solution tank (20), the third pneumatic valve (21), the fifth centrifugal pump (22), potassium solution tank (23), the fourth pneumatic valve (24), the sixth centrifugal pump (25 ), medium and trace element tank (26), fifth pneumatic valve (27), seventh centrifugal pump (28), second mixing unit (29), mixing tank (30), flow meter (31), eighth centrifugal pump (32), electromagnetic valve (33), manual controller (34), remote control terminal (35).
    所述所述气泡水池(2)一端连接纳米气泡发生器(1)，另一端连接有第一阀门(7)；过滤池(3)内设置有第一过滤网(4)、第二过滤网(5)及排渣口(6)，排渣口(6)设置在过滤池(3)的底部，过滤池(3)靠近过滤液的一端连接有第二阀门(8)；第一阀门(7)与第二阀门(8)共同连接于第一离心泵(9)，并通过第一离心泵(9)与沼液处理池(11)连接，沼液处理池(11)内安装有第一搅拌机组(10)；沼液处理池(11)通过第二离心泵(12)与过滤组件(13)一端连接，过滤组件(13)另一端与沼液原料罐(14)的进料口连接；沼液原料罐(14)的出料口通过主管道与混合罐(30)的入料口连接，沼液原料罐(14)的出料口附近设置有第一气动阀门(15)和第三离心泵(16)；氮溶液罐(17)、磷溶液罐(20)、钾溶液罐(23)和中微量元素罐(26)分别通过支管道与主管道连接，各支管道上分别设置有第二气动阀门(18)和第四离心泵(19)、第三气动阀门(21)和第五离心泵(22)、第四气动阀门(24)和第六离心泵(25)、第五气动阀门(27)和第七离心泵(28)；混合罐(30)上方安装有第二搅拌机组(29)；混合罐(30)通过第八离心泵(32)与电磁阀门(33)连接，混合罐(30)与第八离心泵(32)之间还设置有流量计(31)，所述终端控制包括手动控制器(34)和/或远程控制端(35)，用于控制各阀门以控制各个罐体的出液量。One end of the bubble pool (2) is connected to the nano-bubble generator (1), and the other end is connected to the first valve (7); the filter tank (3) is provided with a first filter screen (4), a second filter screen (5) and the slag outlet (6), the slag outlet (6) is arranged on the bottom of the filter tank (3), and the filter tank (3) is connected with a second valve (8) near one end of the filtrate; the first valve ( 7) Connect to the first centrifugal pump (9) together with the second valve (8), and connect to the biogas slurry treatment pond (11) through the first centrifugal pump (9), and the biogas slurry treatment pond (11) is equipped with the first A mixing unit (10); the biogas slurry treatment pool (11) is connected to one end of the filter assembly (13) through the second centrifugal pump (12), and the other end of the filter assembly (13) is connected to the feed port of the biogas slurry raw material tank (14) Connect; the discharge port of the biogas slurry raw material tank (14) is connected with the feed port of the mixing tank (30) through the main pipeline, and the first pneumatic valve (15) and the first pneumatic valve (15) and the first pneumatic valve (15) and The third centrifugal pump (16); Nitrogen solution tank (17), phosphorus solution tank (20), potassium solution tank (23) and medium and trace element tank (26) are respectively connected with main pipeline by branch pipeline, respectively on each branch pipeline The second pneumatic valve (18) and the fourth centrifugal pump (19), the third pneumatic valve (21) and the fifth centrifugal pump (22), the fourth pneumatic valve (24) and the sixth centrifugal pump (25), The fifth pneumatic valve (27) and the seventh centrifugal pump (28); the second mixing unit (29) is installed above the mixing tank (30); the mixing tank (30) passes through the eighth centrifugal pump (32) and the electromagnetic valve (33) ) connection, a flow meter (31) is also provided between the mixing tank (30) and the eighth centrifugal pump (32), and the terminal control includes a manual controller (34) and/or a remote control terminal (35) for Control each valve to control the liquid output of each tank.
  8. 根据权利要求7所述的装置，其特征在于，所述第一过滤网(4)和第二过滤网(5)的孔径分别为850μm与250μm。The device according to claim 7, characterized in that the apertures of the first filter (4) and the second filter (5) are 850 μm and 250 μm respectively.
PCT/CN2022/107603 2021-06-01 2022-07-25 Method for producing high-efficiency organic liquid fertilizer by using biogas slurry and apparatus therefor WO2022253359A1 (en)

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