Full-quantitative treatment process for organic biogas slurry

Abstract

The invention relates to a full-quantification treatment process for organic biogas slurry. The process comprises the steps of electron beam irradiation, ozone recovery, sedimentation, membrane filtration, extrusion filtration and productization treatment. Organic biogas slurry is primarily treated through electron beam irradiation, organic macromolecules and a stable suspension system in the biogas slurry are destroyed, the settleability of the biogas slurry is improved, and then nutritional ingredients and solid residues in the organic biogas slurry are recycled through membrane filtration and extrusion filtration methods to be prepared into a nutrient solution and a fuel rod. The treatment process has the advantages of simple flow, novel process, low operation cost, high comprehensive utilization rate of resources, good economic benefit and the like.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to a fully quantitative treatment process of organic biogas slurry. Background Art

[0002] Organic biogas slurry is the residual liquid after the perishable and high-organic kitchen waste and biogas slurry are mixed in a certain proportion and fermented. Because the fermented product is soaked in water, some soluble nutrients are converted from solid state to liquid state during biogas fermentation. This liquid contains a variety of very rich soluble substances, biologically active substances, inorganic ash impurities and a large amount of water. Among them, the soluble substances are mainly soluble small molecules decomposed by microorganisms. Due to their simple structure, they can be used for crop nutrition regulation and cultivation or digestion and absorption after treatment. The biologically active substances in biogas slurry, such as amino acids, auxins, cellulases, monosaccharides, and unsaturated fatty acids, can be used as a quick-acting fertilizer. At present, treatment projects usually treat organic biogas slurry directly as ordinary wastewater purification, which not only increases production costs, but is undoubtedly a huge waste in terms of nutritional value; in terms of disposal technology, the technologies currently used generally have problems such as complex processes, high operating costs, and easy secondary pollution. Therefore, the development of nutrient solutions with high nutritional content and the full-scale treatment of organic biogas slurry has become a top priority for the biogas industry. Summary of the invention

[0003] The purpose of the present invention is to solve the problems of great difficulty, high cost and low resource recovery rate in the current organic biogas slurry treatment process.

[0004] To achieve the above objectives, the present application provides a fully quantitative treatment process for organic biogas slurry, comprising the following steps:

[0005] Step S1: an electron beam irradiation process, wherein the organic biogas slurry is subjected to electron beam irradiation treatment to obtain an irradiated liquid;

[0006] Step S2: a sedimentation process, wherein the irradiated liquid is sedimented to obtain a supernatant and solid residue;

[0007] Step S3: membrane filtration process and extrusion filtration process,

[0008] The specific steps of the membrane filtration process are: collecting the supernatant obtained in step S2 and subjecting it to membrane filtration to obtain a primary nutrient solution and a concentrated solution;

[0009] The specific steps of the extrusion and filtration process are as follows: collecting the solid slag obtained in step S2 and subjecting it to extrusion and filtration to obtain a primary fuel rod product and a filtrate;

[0010] Step S4: a product processing step, in which the primary nutrient solution and the primary fuel rod obtained in step S3 are respectively subjected to product processing to obtain nutrient solution and fuel rods that meet preset standards.

[0011] Further specifically, in step S1, during the electron beam irradiation treatment, the electron beam irradiation dose is 5 to 20 kGy, the electron accelerator is selected to be 2.0 MeV, the maximum beam current is 50 mA, the beam width is 50 to 60 mm, the irradiation time is 0.2 to 0.8 s, and the scanning length is 500 to 1000 mm.

[0012] More specifically, in step S1, during the electron beam irradiation treatment, the organic biogas slurry is sprayed from the electron accelerator nozzle, the horizontal spraying speed is 2.0-3.0 m / s, the water curtain width is 500-1000 mm, and the water curtain thickness is 4-6 mm.

[0013] More specifically, after step S1 and before step S2, step S5 is included: an ozone recovery process, and the specific steps are: recovering the ozone gas generated during the electron beam irradiation treatment in step S1.

[0014] More specifically, in step S3, the concentrated solution generated by the membrane filtration is recovered by a receiving and delivering device and is used in the extrusion filtration process of step S3, and is subjected to extrusion filtration treatment together with the solid residue.

[0015] More specifically, in step S3, the filtrate generated by the extrusion filtration is recovered by a receiving and delivering device and reused in the membrane filtration process of step S3, and is subjected to extrusion filtration treatment together with the supernatant.

[0016] More specifically, in step S3, the membrane filtration process uses a filtration membrane with a pore size less than 0.3 μm.

[0017] More specifically, in step S3, the moisture content of the initial fuel rod is lower than 70%.

[0018] More specifically, in step S4, the product processing of the initial nutrient solution includes at least one of the following steps: nutrient solution dilution, nutrient solution concentration, nutrient solution pH adjustment, phosphate ion concentration adjustment, nitrate ion concentration adjustment, and nutrient solution decolorization.

[0019] More specifically, in step S4, the productization processing of the primary fuel rods includes at least one of the following steps: drying with a dryer, sawing with a sawing device, granulating with a granulator, and screening with a screening machine.

[0020] The present application also provides a fully quantitative treatment system for organic biogas slurry, comprising:

[0021] An electron beam irradiation module is used to perform electron beam irradiation treatment on organic biogas slurry to obtain irradiated treated liquid;

[0022] A sedimentation module, used for sedimenting the irradiated liquid to obtain a supernatant and solid residue;

[0023] A membrane filtration module, used for filtering the supernatant to obtain a primary nutrient solution and a concentrated solution;

[0024] An extrusion filtration module is used to extrude and filter the solid residue to obtain the primary fuel rod product and the filtrate;

[0025] Product processing modules include:

[0026] A nutrient solution primary product product processing unit, used for processing the nutrient solution primary product into a product to obtain a nutrient solution that meets preset standards;

[0027] The fuel rod primary product processing unit is used for processing the fuel rod primary products into products to obtain fuel rods that meet preset standards.

[0028] More specifically, the electron beam irradiation module includes an electron accelerator irradiation unit and an organic biogas slurry conveying unit.

[0029] More specifically, an ozone recovery module is included after the electron beam irradiation treatment module and before the sedimentation module, for recovering the ozone gas generated by the electron beam irradiation module.

[0030] More specifically, it also includes a first receiving and sending unit, which is used to receive the filtrate generated by the extrusion filtration module and transport it to the membrane filtration module.

[0031] More specifically, the first receiving and delivering unit is selected from one of a receiving and delivering pipe, a receiving and delivering barrel, a receiving and delivering box, and a receiving and delivering vehicle.

[0032] More specifically, it also includes a second receiving and sending unit, which is used to receive the concentrated liquid produced by the membrane filtration module and transport it to the extrusion filtration module.

[0033] More specifically, the second receiving and delivering unit is selected from one of a receiving and delivering pipe, a receiving and delivering barrel, a receiving and delivering box, and a receiving and delivering vehicle.

[0034] More specifically, the pore size of the filter membrane used in the membrane filtration module is less than 0.3 μm.

[0035] To be more specific, the nutrient solution primary product product processing unit of the product processing module includes at least one of the following sections: nutrient solution dilution section, nutrient solution concentration section, nutrient solution pH adjustment section, phosphate ion concentration adjustment section, nitrate ion concentration adjustment section, and nutrient solution decolorization section.

[0036] More specifically, the fuel rod primary product processing unit of the product processing module includes at least one of the following sections: a drying section, a sawing section, a granulation section, and a screening section.

[0037] The beneficial effects of the present invention are as follows: the fully quantitative treatment process of organic biogas slurry combines electron beam accelerator, membrane purification system, extrusion filtration equipment and fuel rod preparation equipment, etc., to achieve the simultaneous recycling of nutrients and solid residues in organic biogas slurry. The treatment process is simple, novel, and has low operating costs, which solves the problem of waste of organic biogas slurry resources.

[0038] The introduction of electron beam accelerator can quickly act on organic macromolecules, bacteria and other microorganisms in the water body. Destroying the high-concentration EPS stable suspension system in the organic biogas slurry not only improves the sedimentation of the organic biogas slurry, but also breaks the chain of macromolecular organic matter, allowing more available small molecular substances to dissolve into the treated liquid, enriching more nutrients, reducing the loss of nutrients, and thus achieving the purpose of nutrient recovery. The prepared nutrient solution is rich in nutrients and can be used as a fertilizer for plant cultivation. The precipitated solid slag obtained after electron beam irradiation has a fine texture and is easy to extrude and filter to prepare into fuel rods. The prepared fuel rod product has good formability, is not loose, and is not easy to break. It has a good product shape retention rate without the addition of adhesives, and there is no incomplete or slag. The fuel rod has a small odor and a high combustion calorific value, which meets the relevant combustion flue gas standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the process flow of fully quantitative treatment of organic biogas slurry in this application.

[0040] Figure 2 It is a schematic diagram of the process of the fully quantitative treatment system of organic biogas slurry in this application. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the specific implementation methods of the present invention are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The present invention provides a fully quantitative treatment process for organic biogas slurry, comprising the following steps:

[0043] Step S1: an electron beam irradiation process, wherein the organic biogas slurry is subjected to electron beam irradiation treatment to obtain an irradiated liquid;

[0044] Step S2: sedimentation process, sedimenting the irradiated liquid to obtain a supernatant and solid residue;

[0045] Step S3: membrane filtration process and extrusion filtration process,

[0046] The specific steps of the membrane filtration process are: collecting the supernatant obtained in step S2 and subjecting it to membrane filtration to obtain a primary nutrient solution and a concentrated solution;

[0047] The specific steps of the extrusion and filtration process are as follows: the solid residue obtained in the collection step S2 is subjected to extrusion and filtration treatment to obtain a primary fuel rod product and a filtrate;

[0048] Step S4: a product processing step, in which the primary nutrient solution and the primary fuel rod obtained in step S3 are respectively subjected to product processing to obtain nutrient solution and fuel rods that meet preset standards.

[0049] Nutrient solution preset standard: COD ≥ 9000mg / L, BOD 5 / COD≥0.6, pH value is 7-8, SS≤300mg / L, total phosphorus (calculated as phosphate)≤500mg / L, total nitrogen (calculated as nitrate)≤500mg / L;

[0050] Fuel rod preset standards: material particle size ≤1cm, length ≤15cm, moisture content ≤20%, lower calorific value ≥3500kcal / kg, total sulfur ≤0.5%, hydrogen ≤8.0%.

[0051] In some embodiments, in step S1, during the electron beam irradiation treatment, the electron beam irradiation dose is 5 to 20 kGy, the electron accelerator is selected to be 2.0 MeV, the beam current is 50 mA, the beam width is 50 to 60 mm, the irradiation time is 0.2 to 0.8 s, and the scanning length is 500 to 1000 mm.

[0052] In some embodiments, in step S1, during the electron beam irradiation treatment, the organic biogas slurry is sprayed from the electron accelerator nozzle, the horizontal spraying speed is 2.0-3.0 m / s, the water curtain width is 500-1000 mm, and the water curtain thickness is 4-6 mm.

[0053] In some embodiments, after step S1 and before step S2, step S5 is included: an ozone recovery process, which specifically comprises the following steps: a suction hood is provided above the irradiated liquid to recover the ozone gas, and the ozone recovery can be performed simultaneously with the electron beam irradiation process. A small amount of ozone will be generated during the electron beam irradiation of organic biogas slurry, and part of the ozone will remain in the fuel rods, affecting the product use of the fuel rods. The ozone recovery step after the electron beam irradiation treatment is beneficial to the deodorization and sterilization of the fuel rods.

[0054] In some embodiments, in step S3, the concentrated solution produced by membrane filtration is recycled in the extrusion filtration process of step S3 through a receiving and delivering device such as a receiving and delivering barrel or a receiving and delivering pipeline, and is subjected to extrusion filtration treatment together with the solid residue. After membrane filtration, a small amount of concentrated solution is produced, and the concentrated solution has a high solid content. The concentrated solution can be extruded and filtered together with the solid residue to prepare the primary fuel rod product, thereby improving the utilization rate of solid waste. A plate and frame filter press can be used in the extrusion filtration process.

[0055] In some embodiments, in step S3, the filtrate produced by the extrusion filtration is recycled in the membrane filtration process of step S3 through a receiving and sending device such as a receiving and sending bucket or a receiving and sending pipeline, and is subjected to extrusion filtration treatment together with the supernatant. The filtrate produced by the extrusion filtration contains a large amount of soluble nutrients such as nitrogen and phosphorus, and is subjected to membrane filtration together with the supernatant to prepare a preliminary nutrient solution, thereby improving the recovery rate of the nutrient elements. In the embodiment, the membrane filtration uses an immersed flat ceramic membrane, and the solution is introduced into a flat ceramic membrane pool for the membrane filtration.

[0056] In some embodiments, in step S3, the membrane filtration process uses a filter membrane with a pore size of less than 0.3 μm. The membrane filtration pore size setting can filter out most of the insoluble suspended microparticles, which is beneficial to control the quality of the initial nutrient solution and reduce the phenomenon of less solid precipitation after long-term storage of the nutrient solution.

[0057] In some embodiments, in step S3, the moisture content of the primary fuel rod product is lower than 70%. During the extrusion and filtration process, the extrusion pressure of the equipment can be adjusted according to actual needs, thereby regulating the moisture content of the primary fuel rod product. Setting the moisture content of the primary fuel rod product to be lower than 70% is conducive to reducing the equipment pressure of the dryer during the subsequent productization process of the primary fuel rod product, and is also conducive to squeezing out most of the soluble nutrients, which are subsequently made into nutrient solution with the filtrate.

[0058] In some embodiments, in step S4, the productization process of the initial nutrient solution includes at least one of the following steps: nutrient solution dilution, nutrient solution concentration, nutrient solution pH adjustment, phosphate ion concentration adjustment, nitrate ion concentration adjustment, and nutrient solution decolorization. The concentration of each component of the nutrient solution and the pH value and other parameters can be adjusted and configured according to customer requirements.

[0059] In some embodiments, in step S4, the productization of the primary fuel rods includes at least one of the following steps: drying in a dryer, sawing in a sawing device, granulating in a granulator, and screening in a sieving machine. The primary fuel rods obtained after extrusion and filtration can be processed into products according to customer requirements, and the parameters such as the water content, shape and size of the fuel rods can be processed using equipment such as a disc dryer and a granulator.

[0060] The present application also provides a fully quantitative treatment system for organic biogas slurry, comprising:

[0061] An electron beam irradiation module is used to perform electron beam irradiation treatment on organic biogas slurry to obtain irradiated treated liquid;

[0062] A sedimentation module, used for sedimenting the irradiated liquid to obtain a supernatant and solid residue;

[0063] A membrane filtration module, used for filtering the supernatant to obtain a primary nutrient solution and a concentrated solution;

[0064] An extrusion filtration module is used to extrude and filter the solid residue to obtain the primary fuel rod product and the filtrate;

[0065] Product processing modules include:

[0066] A nutrient solution initial product product processing unit is used to process the initial nutrient solution into a product to obtain a nutrient solution that meets preset standards;

[0067] The fuel rod primary product processing unit is used for processing the primary fuel rods into products to obtain fuel rods that meet the preset standards.

[0068] In some embodiments, the electron beam irradiation module includes an electron accelerator irradiation unit and an organic biogas slurry delivery unit. The organic biogas slurry delivery unit delivers the organic biogas slurry to be treated and sprays it out from the device nozzle for electron beam irradiation.

[0069] In some embodiments, an ozone recovery module is included after the electron beam irradiation treatment module and before the sedimentation module to recover the ozone gas generated during the electron beam irradiation treatment. The ozone recovery module can be an air suction hood arranged above the irradiated liquid.

[0070] In some embodiments, it also includes a first receiving and sending unit for receiving the filtrate produced by the extrusion filtration module and sending it to the membrane filtration module.

[0071] In some embodiments, the first receiving and delivering unit is selected from one of a receiving and delivering pipe, a receiving and delivering barrel, a receiving and delivering box, and a receiving and delivering vehicle, and a receiving and delivering barrel is selected.

[0072] In some embodiments, a second receiving and sending unit is further included, which is used to receive the concentrated solution produced by the membrane filtration module and send it to the squeeze filtration module.

[0073] In some embodiments, the second receiving and delivering unit is selected from one of a receiving and delivering pipe, a receiving and delivering barrel, a receiving and delivering box, and a receiving and delivering vehicle, and a receiving and delivering barrel is selected.

[0074] In some embodiments, the filtration membrane used in the membrane filtration module has a pore size of less than 0.3 μm.

[0075] In some embodiments, the nutrient solution primary product product processing unit of the product processing module includes at least one of the following sections: nutrient solution dilution section, nutrient solution concentration section, nutrient solution pH adjustment section, phosphate ion concentration adjustment section, nitrate ion concentration adjustment section, and nutrient solution decolorization section.

[0076] In some embodiments, the fuel rod primary product processing unit of the product processing module includes at least one of the following sections: a drying section, a sawing section, a granulation section, and a screening section.

[0077] Based on the above-mentioned organic biogas slurry full-scale treatment process steps, some specific embodiments and parameter data of the prepared nutrient solution and fuel rods are listed below:

[0078] Example 1

[0079] 1) Irradiation treatment: the organic biogas slurry is transported to an electron accelerator for irradiation treatment, the irradiation dose is 10 kGy, the electron accelerator is selected as follows: energy 2.0 MeV, maximum beam current 50 mA, beam width 60 mm, irradiation time 0.4 s, scanning length 1000 mm, water curtain width 900 mm, water curtain thickness 6 mm, nozzle horizontal injection speed 2.0 m / s, and irradiated liquid is obtained. The COD content in the organic biogas slurry stock solution is 26967 mg / L, and the SS content is 13050 mg / L.

[0080] 2) Ozone recovery: open the suction hood to collect the ozone gas generated during the electron beam irradiation process to obtain the irradiated liquid after ozone recovery.

[0081] 3) Sedimentation: The irradiated liquid recovered by ozone was naturally settled for 10 minutes to obtain a supernatant and precipitated solid residue. The COD content of the supernatant after precipitation was 25211 mg / L and the SS content was 11900 mg / L.

[0082] 4) Membrane filtration: the supernatant after precipitation and the filtrate produced by squeeze filtration enter the flat ceramic membrane pool. The flat ceramic membrane is an immersed membrane group with a membrane pore size of 0.1 μm. The COD content of the initial nutrient solution obtained by filtration under negative pressure is 9000 mg / L. The BOD content of the nutrient solution obtained after product treatment and deployment is 5 / COD is 0.65, pH value is 7.8, total phosphorus content (calculated as phosphate) is 125mg / L, total nitrogen content (calculated as nitrate) is 120mg / L, SS content is 220mg / L, and COD is 15000mg / L.

[0083] 5) Extrusion filtration, the precipitated solid residue and membrane filtration concentrate enter the extrusion filtration system, and are extruded and filtered by a plate and frame filter press. The moisture content of the residue after filtration is 65%, and the primary fuel rod is obtained. Product processing, the primary product is dried by a disc dryer, and the dried dry material is prepared into RDF fuel rods by a granulator. The relevant parameters of the RDF fuel rod are: the material cylinder diameter is 1 cm, the length is 15 cm, the moisture content is 18%, the lower calorific value is 3831 kcal / kg, the total sulfur is 0.44%, and the hydrogen is 7.38%.

[0084] Example 2

[0085] 1) Irradiation treatment: the organic biogas slurry was transported to an electron accelerator for irradiation treatment, the irradiation dose was 20 kGy, the electron accelerator was selected as follows: energy 2.0 MeV, maximum beam current 50 mA, beam width 60 mm, irradiation time 0.6 s, scanning length 1000 mm, water curtain width 900 mm, water curtain thickness 6 mm, nozzle horizontal injection speed 2.0 m / s, and irradiated liquid was obtained. The COD content in the organic biogas slurry stock solution was 24233 mg / L and the SS content was 15609 mg / L.

[0086] 2) Ozone recovery: open the suction hood to collect the ozone gas generated during the electron beam irradiation process to obtain the irradiated liquid after ozone recovery.

[0087] 3) Sedimentation: The irradiated liquid recovered by ozone was naturally settled for 10 minutes to obtain a supernatant and precipitated solid residue. The COD content of the supernatant after precipitation was 22945 mg / L and the SS content was 11750 mg / L.

[0088] 4) Membrane filtration: the supernatant after precipitation and the filtrate produced by squeeze filtration enter the flat ceramic membrane pool. The flat ceramic membrane is an immersed membrane group with a membrane pore size of 0.02μm. The COD content of the initial nutrient solution obtained by filtration under negative pressure is 6500mg / L. The BOD content of the nutrient solution obtained after product treatment and preparation is 5 / COD is 0.62, pH value is 7.8, total phosphorus (calculated as phosphate) is 155 mg / L, total nitrogen (calculated as nitrate) is 220 mg / L, SS content is 210 mg / L, and COD is 15000 mg / L.

[0089] 5) Extrusion filtration, the precipitated solid residue and membrane filtration concentrate enter the extrusion filtration system, and are extruded and filtered by a plate and frame filter press. The moisture content of the residue after filtration is 65%, and the primary fuel rod is obtained. Product processing, the primary product is dried by a disc dryer, and the dried dry material is prepared into RDF fuel rods by a granulator. The relevant parameters of the RDF fuel rod are: the material cylinder diameter is 1 cm, the length is 15 cm, the moisture content is 18.5%, the lower calorific value is 3810 kcal / kg, the total sulfur is 0.33%, and the hydrogen is 7.92%.

[0090] Based on the above organic biogas slurry full-scale treatment system, specific embodiments are listed below:

[0091] Example 3

[0092] The organic biogas slurry to be treated is transported to the electron beam irradiation unit through the organic biogas slurry transport unit for electron beam irradiation to obtain irradiated liquid; the suction hood above the irradiated liquid collects and recovers ozone; the irradiated liquid after ozone recovery is passed into the sedimentation module, and the supernatant and solid residue are obtained after sedimentation; the supernatant is passed into the membrane filtration module for membrane filtration to obtain the nutrient solution primary product and concentrated liquid, and the concentrated liquid can be collected and transported to the extrusion filtration module with the solid residue for extrusion filtration together with the solid residue by the first receiving and sending bucket; the solid residue is placed in the extrusion filtration module for extrusion filtration to obtain the fuel rod primary product and filtrate, and the filtrate can be transported to the membrane filtration module with the second receiving and sending bucket for membrane filtration. The nutrient solution primary product is passed into the nutrient solution primary product productization processing unit for productization processing to obtain the nutrient solution that meets the preset sales standards, and the fuel rod primary product is passed into the fuel rod primary product productization processing unit for productization processing to obtain the fuel rod that meets the preset sales standards.

[0093] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, various changes, modifications, substitutions and variations are made to these implementation methods without departing from the principles and concepts of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fully quantitative treatment process for organic biogas slurry, characterized in that: The following steps are involved: Step S1: an electron beam irradiation process, wherein the organic biogas slurry is subjected to electron beam irradiation treatment to obtain an irradiated liquid; Step S2: a sedimentation process, wherein the irradiated liquid is sedimented to obtain a supernatant and solid residue; Step S3: membrane filtration process and extrusion filtration process, The specific steps of the membrane filtration process are: collecting the supernatant obtained in step S2 and subjecting it to membrane filtration to obtain a primary nutrient solution and a concentrated solution; The specific steps of the extrusion filtration process are: collecting the solid slag obtained in step S2 and subjecting it to extrusion filtration to obtain a primary fuel rod product and a filtrate; Step S4: a product processing step, in which the primary nutrient solution and the primary fuel rod obtained in step S3 are respectively subjected to product processing to obtain nutrient solution and fuel rods that meet preset standards.

2. The organic biogas slurry full-scale treatment process according to claim 1 is characterized in that: In step S1, during the electron beam irradiation treatment, the electron beam irradiation dose is 5 to 20 kGy, the electron accelerator is selected to be 2.0 MeV, the maximum beam current is 50 mA, the beam width is 50 to 60 mm, the irradiation time is 0.2 to 0.8 s, and the scanning length is 500 to 1000 mm.

3. The organic biogas slurry full-scale treatment process according to claim 1 is characterized in that: In step S1, during the electron beam irradiation treatment, the organic biogas slurry is sprayed from the electron accelerator nozzle, the horizontal spraying speed is 2.0-3.0 m / s, the water curtain width is 500-1000 mm, and the water curtain thickness is 4-6 mm.

4. The organic biogas slurry full-scale treatment process according to claim 1 is characterized in that: After step S1 and before step S2, step S5 is included: an ozone recovery process, and the specific steps are: recovering the ozone gas generated during the electron beam irradiation treatment in step S1.

5. The organic biogas slurry full-scale treatment process according to claim 1 is characterized in that: In step S3, the concentrated solution generated by the membrane filtration is recovered by a receiving and delivering device and is used in the extrusion filtration process of step S3, and is subjected to extrusion filtration treatment together with the solid residue.

6. The organic biogas slurry full-scale treatment process according to claim 1 is characterized in that: In step S3, the filtrate generated by the squeeze filtration is recovered by a receiving and sending device and is used in the membrane filtration process of step S3, and is subjected to membrane filtration treatment together with the supernatant.

7. The organic biogas slurry full-scale treatment process according to claim 1 is characterized in that: In step S3, the membrane filtration process uses a filtration membrane with a pore size less than 0.3 μm.

8. The organic biogas slurry full-scale treatment process according to claim 1 is characterized in that: In step S3, the moisture content of the initial fuel rod is lower than 70%.

9. The organic biogas slurry full-scale treatment process according to claim 1 is characterized in that: In step S4, the commercialization process of the initial nutrient solution includes at least one of the following steps: nutrient solution dilution, nutrient solution concentration, nutrient solution pH adjustment, phosphate ion concentration adjustment, nitrate ion concentration adjustment, and nutrient solution decolorization.

10. The organic biogas slurry full-scale treatment process according to claim 1, characterized in that: In step S4, the productization processing of the primary fuel rods includes at least one of the following steps: drying with a dryer, sawing with a sawing device, granulating with a granulator, and screening with a screening machine.

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