Process for the utilization of wet straw material

Abstract

Process for the utilization of biomass in the form of wet straw material (10) with the following process steps: a) Dividing the wet grass (10) produced by the cultivation of green areas into two parts, b) storing the first part of the wet stalk material (10) in the form of silage (12) in a warehouse (13), c) drying the second part of the moist straw material (10) and obtaining dry straw material (70), wherein the drying comprises using waste heat from step h), d) continuously or discontinuously removing the silage (12) from the storage (13), feeding the silage (12) as biomass to a stirred reactor (16) with the addition of water (20) and digesting the silage (12) in the stirred reactor (16), e) removing the digested biomass from the stirred reactor (16), pressing the biomass in a press (24) and obtaining a solid stream (28) and a liquid stream (30), f) feeding the liquid material stream (30) to an anaerobic treatment (34) and producing biogas (50), g) thermal and / or biological drying (36) of the solid stream (28), h) thermal utilization of the dried solid stream (38) and dry straw material (70) and generation of boiler ash (88) and waste heat, i) obtaining liquid fertilizer (60) from water (54) withdrawn after carrying out the anaerobic treatment (34) and j) using the boiler ash (88) resulting from the thermal recovery according to step h) as supplementary fertilizer in cultivated grassland.

Description

Technical FieldThe present invention relates to a method for utilizing moist straws. The moist straw material is obtained in the management of green areas as meadow or also as green cut and is preferably obtained from ecologicalally high-quality or ecological green land.Prior ArtDE 43 38 306 A1 relates to a method and a plant for utilizing biomass. The biomass is substantially treated by composting. The heat generated during the composting is used to dry the biomass. The biomass is subsequently used thermally in heating power plants. The basic material used for the biomass is biowaste such as grass, leaves, green garbage, wood cut, bark and biological residual materials which can be obtained in agriculture, in landscape care and in landscape construction, in households or else in mining.DE 20 2010 010 368 U1 relates to fuel briquettes made of renewable raw materials. The fuel briquet is obtained by a process in which a raw material mixture of non-woodised or non-lignised fine material and woodised or lignised structural material, in particular a raw material mixture of forest residual wood with bark produced during perforation and in the crop wood harvest in forest business operations, and wood from short-range plantations and plant and / or plant constituents produced during landscape maintenance, is used. This raw material mixture is subjected to an at least one-stage rotary-waste process, wherein the rotary-waste process is carried out in such a way that the fine material of the raw material mixture is biologically reacted at least up to a rotary grade II and at most up to a rotary grade III, and the partially rotary-waste raw material mixture obtained in this way is used for producing fuel briquettes.At the beginning of the rottling process, a predetermined water content is optionally set by addition of water. After the rotary process, the water content should be less than 30%, and the material is separated into a coarse fraction and a fine fraction. The coarse fraction has a water content of less than 15% and is briquettes.DE 10 2006 010 449 A1 relates to a method for the mechanical separation of silated biomass into a solid with a low moisture content and a liquid phase with large proportions of organic and mineral plant constituents that are easy to coarsen.DE 10 2014 003 618 A1 relates to a method for biogas production with integrated process water treatment.DE 10 2011 017 125 A1 relates to a method for burning moist renewable raw materials for generating energy.DE 199 51 929 A1 relates to a method for obtaining a gaseous energy carrier from renewable vegetable raw materials and an associated apparatus. According to this method, a gaseous energy carrier, in particular methane, is obtained from renewable vegetable raw materials in such a way that the vegetable raw materials are reduced in size in a comminution device, in particular a mill, the raw materials are introduced into a digestion container and the energy carrier formed by digestion of the raw materials in the digestion container is collected. An energyally unusable residue is used as fertilizer.DE 195 26 342 A1 relates to a method and an apparatus for producing highly compressible shape-resistant cylindrical briquettes from crop in the form of a straw.A method for producing highly compacted, dimensionally stable cylindrical briquettes of straw-shaped material such as straw, whole plants, grass or other vegetable stalks is proposed, wherein this material is supplied continuously, preferably aligned longitudinally with the axial compacting direction, without being comminuted. A loosely laid crop strand is separated transversely to its stalk direction in a pre-compressed manner into strand pieces, ejected downward, guided transversely to the stalk direction, equalized with respect to the crop strand height, mass-dosed, supplied to a radial pre-compaction as a single dosed crop strand and subsequently shaped radially simultaneously and pre-compressed for the further axial pre-compaction. Subsequently, the crop strand is pre-compressed axially and, in the process, is passed on in a positioned manner for the subsequent compression process, finally compressed and ejected.The crop in the form of a straw, whole plants, grass or other vegetable stalks are oriented via a combing roller before pressing. The blades are pressed to form a strand and subsequently cut off, so that shape-resistant, substantially cylindrical briquettes are produced.DE 10 2007 011 782 A1 relates to a method for producing and utilizing biomass and also use and device.DE 196 15 551 C2 relates to a method for the multistage anaerobic treatment of biomasses for the production of biogas and to a device for carrying out this method.DE 10 2010 034 528 A1 relates to a method and an apparatus for treating an organic and water-containing mixture of substances.DE 10 2006 008 026 A1 relates to a method and an apparatus for the continuous liquefaction of organic solids.There are developments to obtain energy from renewable raw materials. Newly developed technologies, for example the Maximum Yield Technology (MYT®), biogas and replacement fuels are obtained from residual domestic waste and biowaste, with which biogas and heat energy can be generated. Further projects are currently still in the development phase.In the case of early lady's mouths and late additional care cuts and depending on the climate zone, the weather condition and the season, the production of solar-dried dry straw material may not be possible, so that this valuable biomass (i.e. moist straw material) is not available for direct utilization as fuel. The term moist straw is understood to mean the straw obtained directly after a meadow or after cutting plants. The dried straw is obtained from this by drying. The moist straw material has a moisture content of 20% or more, typical moisture contents being between about 60-90%, depending on the straw species. Dry straw has a moisture content of less than 20%. The moisture is defined here as the water fraction in wt % based on the total mass or the moisture mass.SUMMARY OF THE INVENTIONThe object of the invention is to provide a method for the most comprehensive effective utilization of moist straw material beyond the pure heat and energy generation.In the method according to the invention for utilizing biomass which is obtained in the form of moist straw material in measures for landscape care, preferably from the management of ecologicalally high-quality and ecologicalally to be treated, but also in the care of municipal lawn areas, in care measures of private households and in other lawn and meadowmahd, the following method steps are carried out: a) dividing up moist straw material obtained by management of green areas into two parts, b) storing the first part of the moist straw material in the form of silage in a store, c) drying the second part of the moist straw material and obtaining dry straw material, wherein the drying comprises using waste heat from step h), d) continuous or discontinuous removal of the silage from the store, feeding the silage as biomass to a stirred reactor with addition of water and digestion of the silage in the stirred reactor, e) removal of the digested biomass from the stirred reactor, pressing off the biomass in a press, and obtaining a solid stream and a liquid stream, f) feeding the liquid stream to an anaerobic treatment and recovering biogas, g) thermal and / or biological drying of the solid stream, h) thermal recycling of the dried solid stream and dry waste material and generating boiler ash and waste heat, i) obtaining liquid fertilizer from water removed after the performance of the anaerobic treatment, and j) using the boiler ash obtained in the thermal utilization according to step h) as supplementary fertilizer in controlled greenland.The method according to the invention makes moist straw goods from landscape care and / or agriculture particularly energy-efficient to treat and utilize. This is made possible by the fact that biogas and solid fuels are produced from the available moist straw material for utilization. Compared to conventional agricultural technologies, the biomass is used further in energy, since residues formed, for example fermentation residues, residues from green agriculture and residues which are often used only insufficiently or not at all, are minimized to the greatest extent possible. A further essential feature of the method according to the invention for utilizing moist straw material is that the method according to the invention can avoid particularly environmentally damaging emissions or management methods. For example, diffuse emissions of methane gas can be avoided by separating them into solid and liquid streams and avoiding anaerobically treated fermentation residues. Furthermore, no intensively managed agricultural crops are required for carrying out the method according to the invention, so that disadvantages which would arise from monocultures, pest control or fertilisation or overfertilisation and drastically reduce the ecological high value of the method are avoided from the outset.Within the scope of a silting, which can usually take place in transport silos, silos or silage bales, a biochemical modification takes place, which improves the later processing of the moist straw material present in the silage form and additionally has a preserving effect.In the context of the process according to the invention, the moist straw material is transferred after the silting discontinuously or continuously as biomass into an in particular cylindrical stirred reactor. Within the stirred reactor, which is in particular oriented substantially horizontally, the biomass is mixed with addition of water, so that a specific consistency of the biomass is established. To optimize the treatment of the biomass in the stirred reactor or of the biological process proceeding there, an improvement in the biological process in the stirred reactor can be achieved with the addition of water or an alternatively or additionally conceivable temperature management. Within the controlled medium present in the stirred reactor, the biomass pre-fermented there is further chemically digested by hydrolysis. Soluble or suspendable ingredients pass into the aqueous phase. Furthermore, it should be pointed out that shear forces are introduced into the biomass via the stirrer of the stirred reactor, which shear forces assist the chemical digestion process by mechanical attack and in particular by creating new surfaces, i.e. by creating an increase in the surface area of the biomass. The treatment period of the biomass in the stirred reactor is dependent on the respective biomass, wherein the residence time in the stirred reactor is typically between a few hours and 5 days.Subsequently, the biomass pretreated in the stirred reactor is intensively pressed off with a press, in particular a screw press. This produces a solid stream and a separated liquid stream. For the solid stream obtained, a dry substance content of between 40% and 70%, based on the mass of the solid stream, preferably of 50% to 60%, based on the mass of the solid stream, is sought. The percentage of the dry substance content refers to the weight proportion of the dry substance in the solid, i.e. to the dry substance content with respect to the total mass. The liquid material stream obtained is enriched with degradable organics and is fed to an anaerobic treatment for the recovery of biogas.The solid stream produced, which is obtained after pressing, is in particular cellulose-containing material, which is suitable in particular for thermal utilization. The dry substance content of the solid stream obtained after pressing is adjusted to a defined value by carrying out thermal and / or biological drying. If a dry substance content of at least 85% based on the mass of the dried solid stream is achieved, dry stabilization can be used as a starting point, so that the obtained and dried solid stream becomes storable and can be used for energy generation as required. The dried solid stream obtained is subjected to thermal utilization in a utilization plant, for example in a biomass power plant, a combined heat and power plant, a heating power plant, a heating plant, a biomass boiler, a gasification or pyrolysis plant and heating boilers for solid fuel.The second part of the wet batch (FHG) is dried to obtain dry batch (THG), using waste heat from thermal utilization. The dried solids (THG) thus obtained are fed together with the dried solids stream to the utilization system, heat and electrical energy being obtained.For anaerobic treatment, the liquid material stream obtained after the pressing is fed to a fermenter. Biogas formed in this case is removed from the fermenter and can be used, for example, for the production of electric and thermal energy by motor electricity (e.g. in a combined heat and power plant) or can be fed into a gas network. Without a CO 2 separation, the biogas can be fed into a gas network provided for biogas, cleaning steps being carried out if necessary. After a cleaning comprising a CO2 separation, the biogas can be fed into a natural gas network. In the fermenter, the liquid fermentation of the readily degradable organic ingredients realizes very short residence times which amount to a maximum of 10 days. After completion of the anaerobic treatment of the liquid stream, the treated water is available as an environmentally friendly liquid fertilizer for the management, in particular for fertilizing and watering of meadows with the aim of developing, maintaining and expanding of species-rich greenland surfaces. Ash obtained during the thermal utilization of the dried solid stream and the dry solids content is fed to an ash utilization by use as supplementary fertilizer, so that an almost complete utilization of all biomass constituents obtained is achieved.Heat generated in the biomass power plant or in the combined cycle heating and power plant can also be used to dry the solid stream still having a high water content after the pressing, so that its dry substance content can be increased from 40% to 70%, based on the mass of the solid stream, to over 80%, based on the mass of the solid stream, preferably over 85%, based on the mass of the solid stream, so that dry stabilization of the solid stream can be referred to.The waste heat produced during the thermal utilization is used for a direct thermal drying of the second part of the moist straw material (FHG). The moist powder can be fed to a dryer and dried. Subsequently, the dried moist straw material such as dry straw material (THG) is thermally utilized. In addition, it is possible to also use waste heat from other processes for the drying.Advantages of the InventionThe method according to the invention is distinguished in particular in that the moist straw material obtained in landscape care or agriculture can be treated and used in a particularly energy-efficient manner after being silagen. This is made possible by the method according to the invention, since biogas and solid fuels are produced from the available moist straw material for use. In comparison with conventional agricultural technologies, the method according to the invention carries out a further energetic depletion of the moist straw material, since residual substances, fermentation residues and the like which are formed are minimized to the greatest possible extent, these being used as fertilizer.A further important advantage of the method according to the invention is that the novel method avoids particularly environmentally damaging emissions or management methods. For example, diffuse emissions of methane gas can be avoided by separating into solid and liquid streams and avoiding anaerobically treated fermentation residues.With the method according to the invention, heat energy is to be generated from "straw material", i.e. "dry straw material" (THG) and "moist straw material" (FHG), in a particularly energy-efficient and environmentally friendly manner. Important elements are that the development of species-rich greenland structures is of primary importance and the associated recovery of usable biomass takes place on the basis of moist straw material. Since in connection with the project "Biodiversity and regenerative energy at Kahlenberg" for the treatment and utilization of waste fundamentally further regenerative energy resources are available, further projects for the acquisition of bioenergy from green section are developed by the lawn or meadowmahd.Maximum energy yield from moist straw can be achieved if, additionally, solar drying of the moist straw takes place as far as possible. There is also no energy-intensive compacting of the fuel, for example by way of the briquettes or pellets. Biogas formed during the treatment of the moist straw material and a pressed-off residue are not utilized agriculturally but predominantly in an energy manner in the method according to the invention, wherein the residues that are not in an energy manner are minimized. In other biomass processing projects, biomasses are often fermented directly and fermentation residues are agriculturally applied. However, with this approach, the energy efficiency is significantly lower and higher emissions are produced. In the solution according to the invention, the focus is on moist straw material which originates from the development, preservation and expansion of species-rich green land areas by extensive management. This carries considerable environmental advantages compared to those biomasses which originate from intensified agriculture, would only be thought of as corn monocultures, fatty greenland and the monocultured crop of oilseed rape.Waste heat produced in the process according to the invention is also used to directly thermally dry a portion of the moist straw material produced, independently of weathering and season, so that this can subsequently be used as dry straw material. If waste heat from other processes is additionally available at the site, this can likewise be used for thermal drying.BRIEF DESCRIPTION OF THE DRAWINGThe invention will be explained in more detail below with reference to the drawings.The single FIGURE shows a method diagram with the relevant method components in which the individual method steps are run through sequentially or multiple times.Embodiment Variant VariantFIG. 1 shows the division of moist straw material 10 which arises when green surfaces are permanently managed into two parts. A first part of the moist powder material 10 is stored in the form of silage 12 in a store 13. The silager 12 has the effect that the moist waste 10 is prepared for later further processing by the beginning of chemical modification and is additionally preserved with respect to a preceding intermediate storage. The silage 12 can be effected by means of conventional agricultural techniques such as, for example, moving silos, stationary silos or also silage bales 14 which can be seen frequently in the landscape image and are illustrated in the figure.The moist straw present in the form of silagen 12 is removed continuously or discontinuously from the store 13 and fed as biomass to a stirred reactor 16. As shown in FIG. 1, the stirred reactor 16 comprises a trough 18 which is arranged substantially in the horizontal orientation 22. Water is added 20 to the stirred reactor 16. In the above context, water addition 20 is understood to mean addition of circulating water or process water 21 from a fermenter 32. If appropriate, extraneous water 20a, i.e. for example surface water, service water or fresh water, is additionally added. The addition of foreign water 20 amay be necessary for dilution if substances dissolved in the water reach a concentration value which interferes with or inhibits fermentation. To optimize the treatment in the stirred reactor 16 or to optimize the biological process proceeding there, the addition of water 20 or other corresponding equipment can be used to achieve a temperature control for the biomass, at the residence time of which in the stirred reactor 16. In the controlled medium of the stirred reactor 16, prefermented biomass is further chemically broken down by hydrolysis, soluble and / or suspendable constituents of the biomass pass into the water phase in the stirred reactor 16. Shear forces introduced via the agitator 19 of the agitator reactor 16 support these processes by mechanical attack and by creating new surfaces in the pre-fermented biomass. The treatment of the prefermented biomass in the stirred reactor 16 takes place for a dwell time of max. 5 days.The biomass treated in the stirred reactor 16 is then fed to a press 24. The press 24 is preferably a press with a screw 26, i.e. a screw press 24, by means of which a solid stream 28 on the one hand and a liquid stream 30 on the other hand are separated from the biomass. It is desirable that the separated solid stream 28 has a dry matter content of about 70%. The separated liquid material stream 30 is enriched with degradable organics and is fed to a fermenter 32 for an anaerobic treatment 34 for obtaining biogas 50.The solid stream 28 produced is in particular cellulose-containing material which is suitable for thermal utilization. To improve the thermal utilization of the solid stream 28, its dry substance content is increased or adjusted to a defined dry substance content by performing a thermal and / or biological drying 36. When a dry substance content of at least 85% is reached, it is possible to refer to a dry stabilization of the solid stream 28, the solid stream treated by the drying being provided with the reference numeral 38 in FIG. 1. The solid stream 38 treated in this way is readily storable and is used as required for energy generation. For this purpose, the treated solid stream 38 can be fed directly to a utilization or first stored in a store 72 like dry straw 70. The treated solid stream 38 can be used, for example, in biomass boilers 40 which are used, for example, in biomass power plants 76, in block heating power plants, heating plants or in heating power plants. Heat is obtained in heating plants, while electricity 49 and heat 48 are generated in biomass power plants 76, heating plants or combined heat plants. Biomass boilers 40 for straw goods are generally characterized by a water-cooled stair grate and corrosion-resistant materials. This takes account of the special property of crop materials and prevents the risk of slagging due to low ash softening temperatures or corrosion due to a chlorine content which is established.The vapors formed during the thermal and / or biological drying 36 are purified via a bio filter 44 and fed to a clean air outlet 46, at which clean air exits into the environment. The thermal and / or biological drying 36 of the solid stream 28 obtained after the pressing in the press 24 can be carried out by supplying heat or supplying dry air 80 from the biomass power plant 76.The second part of the moist straw 10 is directly thermally dried using waste heat from the biomass power plant 76 to obtain dry straw 70. For this purpose, a dryer 81 can be used, to which the waste heat is provided, for example, via a drying air supply 80 from the biomass power plant 76. Solar drying is provided with the reference numeral 68 in FIG. 1. The dry straw 70 is stored in a store 72, for example a hall 74.The treated solid stream 38 and the dried straw 70 are fed to the biomass boiler 40 of the biomass power plant 76 for thermal utilization. At the location indicated by reference numeral 42 in FIG. 1, the material streams from the processing sequence of the moist straw material 10 and the dry straw material 70 combine. The treated solid stream 38 having the increased dry substance content of at least 85% can, like the dry straw material 70 stored in the store 72, be fed to the biomass power plant 76 at the addition location 42 depending on its need.The liquid material stream 30 is fed to the fermenter 32, in which the anaerobic treatment 34 takes place. This produces biogas 50, which can be converted into electrical energy and into thermal energy by a motor power supply or in which a gas feed 52 into a gas network takes place immediately after a corresponding treatment, as indicated in FIG. 1. In the biomass power plant 76 or the biomass boilers 40 arranged there, the dry solids 70 and the treated solids stream 38 are used. Furthermore, a heat feed 84 into public networks can be effected from the biomass boiler 40 or biomass power plant 76 and also a feed 82 of electrical energy into public power networks can be effected from the biomass power plant 76.By the liquid fermentation of the separated liquid material stream 30 in the fermenter 32, very short residence times of the liquid material stream 30 can be realized in the fermenter 32. The residence time in the fermenter 32 is at most 10 days. After the anaerobic treatment 34 of the separated liquid material stream 30, the water is drawn off from the fermenter 32 at a water draw-off 54. treated water 58 is available as liquid fertilizer 60 after passage of an optional water treatment 56. Likewise, the water from the fermenter 32 can be returned to the stirred reactor 16 as process water 21 after the optional water treatment 56. The environmentally friendly liquid fertilizer 60 is suitable for managing, in particular for fertilizing and watering meadows with the aim of developing the preservation and extension of high-species green areas. The short treatment times result in considerable advantages compared to conventional agricultural biogas use due to smaller sizes and a considerably reduced investment outlay.Furthermore, an ash discharge 86 of the boiler ash 88 takes place from the biomass power plant 76 or from the biomass boiler 40, so that this otherwise unusable residue of the biomass can also be supplied to a further use, which further increases the efficiency of the method according to the invention for utilizing biomass which is produced in the form of moist straw material in relation to conventional methods. As ash utilization of the ash discharge 86, the boiler ash 88 is used as supplementary fertilizer.The method according to the invention has the essential characteristic that biomass from landscape care or agriculture, which is produced in the form of moist straw goods, can be treated and used in a particularly energy-efficient manner. This is possible in that biogas 50 and solid fuels are generated from the available biomass for utilization. Compared to conventional agricultural technologies, the biomass is used further in energy, since residues that are formed, in particular fermentation residues, are minimized and then used to the greatest extent possible. In the method according to the invention, even a utilization of ash occurring in the biomass power plant 76 or in the biomass boiler 40 during the combustion can be achieved. A further essential feature of the method according to the invention for utilizing biomass obtained in the form of moist straw material is that the method can avoid environmental pollution emissions or management methods. For example, diffuse methane gas emissions can be achieved by separation into solid and liquid streams 28, 30 and the avoidance of anaerobically treated fermentation residues. Furthermore, no intensively managed agricultural crops are presumed for the use of the method according to the invention, so that disadvantages which can be stirred from monocultures, pest control and fertilizer do not diminish the ecological advantages of the method according to the invention.List of reference characters10 Moist straw (FHG) 12 Silayer 13 Storage location (moist straw) 14 Silayer bales 16 Stirred reactor 19 Stirred device 18 Trough 20 Water addition 20 a Fremd water addition 21 Process water 22 Horizontal alignment 24 Press, screw press 26 Screw 28 Separated solid stream 30 Separated liquid stream 32 Fermenter 34 Anaerobic treatment 36 Drying (thermally and / or biologically) 38 Treated solid stream 40 Biomass boiler, 42 Dry batch addition point 44 Bio filter 46 Clean air outlet 48 Heat 49 Stream 50 Biogas 52 Feed gas network 54 Water draw from fermenter 32 56 Water treatment 58 Treated water 60 Liquid fertilizer / fertilizer / irrigation 68 Solar drying Dry batch 70 Dry batch (THG) 72 Storage (dry batch) 74 Hall 76 Biomass power plant 78 Biogas feed line 80 Heat emission / dry air feed 81 Dryer 82 Stream feed public network 84 Heat feed public network 86 Ash discharge 88 Boiler ash

Claims

Method for utilizing biomass obtained in the form of moist straw material (10), comprising the following method steps: a) dividing up moist straw material (10) obtained by managing green surfaces into two parts, b) storing the first part of the moist straw material (10) in the form of silage (12) in a store (13), c) drying the second part of the moist straw material (10) and obtaining dry straw material (70), wherein the drying comprises using waste heat from step h), d) continuously or discontinuously removing the silage (12) from the store (13), supplying the silayer (12) as biomass to a stirred reactor (16) with addition of water (20) and digestion of the silayer (12) in the stirred reactor (16), e) removing the digested biomass from the stirred reactor (16), pressing the biomass in a press (24) and obtaining a solid stream (28) and a liquid stream (30), f) supplying the liquid stream (30) to an anaerobic treatment (34) and recovering biogas (50), g) thermally and / or biologically drying (36) the solid stream (28), h) thermally utilizing the dried solid stream (38) and dry solids (70) and producing boiler ash (88) and waste heat, i) Obtaining liquid fertilizer (60) from water (54) and j) removed after carrying out the anaerobic treatment (34) using the boiler ash (88) obtained in the thermal utilization according to step h) as supplementary fertilizer in a businessized greenland.Method according to Claim 1, characterized in that the water addition (20) according to method step d) takes place in a stirred reactor (16) located in the horizontal orientation (22).Method according to one of the preceding claims, characterized in that, according to method step d), temperature management takes place by the addition of water (20) in the stirred reactor (16).Method according to one of the preceding claims, characterized in that, according to method step d), the pre-fermented biomass is further chemically broken down by hydrolysis in the medium of the stirred reactor (16), and soluble and / or suspendable constituents are transferred into the water phase.Method according to one of the preceding claims, characterized in that, according to method step d), shear forces introduced into the biomass via the stirrer (19) of the stirrer reactor (16) create new surfaces in the biomass and mechanically support the chemical digestion.Method according to one of the preceding claims, characterized in that, according to method step d), the biomass remains in the stirred reactor (16) for a residence time of at most five days.Method according to one of the preceding claims, characterized in that the biomass according to method step e) is pressed off by means of the press (24), and the solid stream (28) produced has a dry substance content of 40% to 70%, based on the mass of the solid stream (28).Method according to one of the preceding claims, characterized in that the solid stream (38) obtained according to method step e) and dried according to method step g) has a defined dry substance content of at least 85% based on the mass of the dried solid stream (38) by thermal and / or biological drying (36), so that dry stabilization is present.Method according to one of the preceding claims, characterized in that the solid stream (38) obtained according to method step e) and dried according to method step g) is storable and is used as required for energy generation and / or heat generation.Method according to one of the preceding claims, characterized in that, according to method step h), the solid stream (38), which has a defined dry substance content, is fed continuously or discontinuously to a biomass boiler (40).Method according to one of the preceding claims, characterized in that the biogas (50) obtained from the biomass according to method step f) during the anaerobic treatment (34) of the biomass of the liquid material flow (30) is either supplied to a biomass power plant (76) via a biogas feed line (78) or a gas feed (52) into gas networks takes place.Method according to one of the preceding claims, characterized in that the residence time of the liquid stream (30) in a fermenter (32) for carrying out the anaerobic treatment (34) is at most 10 days.Method according to one of the preceding claims, characterized in that the thermal utilization according to method step h) takes place in the biomass boiler (40), and an ash discharge (86) for the ash utilization is carried out as an additional fertilizer.

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