DE102014116250A1 - Method and device for treating a mixture - Google Patents

Abstract

A process is proposed for the treatment of a mixture (2) of at least one liquid phase and at least one solid, in particular liquid manure or sewage sludge, comprising the steps of: a) generating an ultrasonic field (5.1b-5.nb); b) conveying the mixture (2) into or through the region of the ultrasonic field (5.1b-5.nb); c) treating the mixture (2) with ultrasound in the area; and d) separating the mixture (2) into the liquid phase and the solid phase after the ultrasonic treatment. Also proposed are a device (1) suitable for carrying out the method and a use of the solid phase produced by means of the method or the device (1).

Description

The invention relates to a process for the treatment of a mixture of at least one liquid phase and at least one solid, in particular manure or sewage sludge. Moreover, the invention relates to a suitable device for the ultrasonic treatment of such a mixture.

Mixtures of the type mentioned are regularly subjected to a solid-liquid separation in current (industrial) practice in order to be able to supply the liquid phase and the solid (solid phase) to separate uses. For example, in the processing of manure, the centrifugate (the liquid phase) is then directly returned as fertilizer in the field, while the solid phase is subjected to further treatment to suitably utilize it, for example, for producing fertilizers or the like.

In the course of today's livestock industry, huge quantities of manure accumulate due to the large number of animals. For this liquid waste stream, there is a Fertilizer Ordinance, which prescribes the permissible application rates on fields as a function of the nitrogen concentration. For this reason, manure is regularly subjected to the already mentioned phase separation (solid / liquid separation) in order to minimize the relevant substance contents in the liquid phase. The liquid residual slurry is applied to the fields in compliance with the permissible limits. Excess nutrient loads, ie excess manure volume, must or must be disposed of cost-intensive and otherwise disposed of. In this context, there is therefore a need for a method or device which is suitable for reducing the content of (ammonium) nitrogen in the liquid phase in order to counteract the above-mentioned over-fertilization problem and the nitrogen via the solid phase of another utilization supply.

In the treatment of sewage sludge said separation serves to win a solid phase with the lowest possible residual water content, which can then also be further utilized, for example, for the production of fertilizers, or by combustion. With regard to sewage sludge, the producer is compensated depending on the amount of dry matter (TS) per ton of sewage sludge in the stated solid phase, so that there is a need to reduce the residual water content in the solid phase as much as possible.

Surprisingly, it has been found that the above-mentioned objects can be achieved with one and the same inventive method having the features of claim 1 and by means of a device according to the invention having the features of claim 10.

Particularly advantageous developments of the method and the device according to the invention are the subject of dependent claims.

A method according to the invention for treating a mixture of at least one liquid phase and at least one solid, in particular liquid manure or sewage sludge, comprises the following steps: generating an ultrasonic field; Conveying the mixture into or through the region of the ultrasound field; Treating the mixture with ultrasound in the area; and separating the mixture into the liquid phase and the solid phase after the ultrasonic treatment.

A device according to the invention for the ultrasonic treatment of a mixture of at least one liquid phase and at least one solid, in particular liquid manure or sewage sludge, comprises: at least one ultrasonic reactor for generating an ultrasonic field; Conveying means for conveying the mixture into or through the area of the ultrasonic field; and separating means for separating the mixture into the liquid phase and the solid phase, which separating means are arranged in the conveying direction of the mixture behind the ultrasonic reactor.

As is known, ultrasound in liquids triggers cavitation within a frequency range of about 20 kHz to about 500 kHz at corresponding sound pressures (from about 10 W / m ² ). At the micrometer level, as a result of very high velocity gradients and below the corresponding vapor pressure, vapor bubbles are produced. These implode abruptly and release locally very high pressures, shear rates and temperatures. Ultrasound can thus homogenize mixtures, expel dissolved gases, break up agglomerates and cells and accelerate chemical reactions or form radicals, which subsequently have an oxidative effect. These circumstances make use of the present invention in a novel manner for the treatment of a mixture of at least one liquid phase and at least one solid (solid phase) and thus achieve a transition of the previously liquid phase ammonium (nitrogen) into the solid matrix ( solid phase) in the treatment of manure. In the same way, in the treatment of sewage sludge, the present invention achieves a significant reduction of the residual water content in the solid phase by about 1.8 to 3 percentage points, corresponding to a corresponding economic appreciation of the solid phase.

The physical principles described above also take place in the treatment of the presently concerned mixture (in particular manure or sewage sludge). That is, the mixture is intensively homogenized and suspended particle structures are broken up. In this case, a portion of the dissolved in the liquid phase ammonium nitrogen cations are shifted in phase, and they are electrostatically attached to the already existing solid particles. In a connected process step, during the separation taking place here, the solid-liquid separation takes place, wherein a part of the ammonium molecules formerly in the liquid phase has been converted into the solid phase. In this way, the liquid phase (the centrifugate) obtained at the end of the process is reduced in its concentration of borderline relevant ammonium nitrogen compounds, so that an increased amount of liquid manure can be applied to the fields. On the other hand, the solid supernatant (the remaining solid phase) is more rich in its nitrogen concentration and thus more interesting for subsequent recovery, as already indicated. Corresponding advantages arise in relation to the residual water content of the solid phase in sewage sludge to be treated, which is significantly lowered compared to untreated sludge.

The inventive method can be implemented either continuously or semi-continuously with appropriate development of the basic inventive idea, in the latter case, a suitable Zwischenablagebehälter can be used. In any case, the mixture present (in particular liquid manure or sewage sludge) flows through an ultrasonic field which is provided with a predetermined frequency and ultrasonic power within at least one ultrasonic reactor.

When generating the ultrasonic field in the ultrasonic reactors, it should be taken into consideration that the treated mixture itself is a component of the ultrasonic resonant circuit and thus also influences the resonant frequency of the same. The ultrasonic generators contained in the ultrasonic reactors usually cover a certain frequency spectrum in which they approximate via the phase shift between current and voltage or resonance frequency. This corresponds to an above-mentioned ultrasonic frequency range of the ultrasonic field or the ultrasonic fields.

Preferably, the at least one ultrasonic reactor is operated within a frequency range of about 20 kHz to about 500 kHz. Particularly advantageous is an operation between about 20 kHz and about 28 kHz, most preferably about 23 kHz to about 25 kHz.

The at least one ultrasound reactor may, without limitation, be as described in US Pat DE 10 2013 203 043 A1 be formed, to which reference is expressly made in the present case.

To generate the ultrasonic field, several ultrasonic reactors can also be connected in series and the mixture can be flowed through correspondingly continuously or discontinuously or semi-continuously. Preferably, at least one ultrasonic reactor is according to DE 10 2013 203 043 A1 educated.

Another development of the method according to the invention is characterized in that a specific ultrasound energy input into the mixture is determined as a function of a dry substance content of the mixture, preferably a treatment duration of the mixture in the ultrasonic field increases with the dry matter content of the mixture. Advantageously, said treatment time and thus the specific ultrasound energy input into the mixture is controlled or regulated via a delivery rate of conveying means for conveying the mixture. It has proved to be particularly advantageous if the specific ultrasonic energy input into the mixture is between about 0.2 kWh / m ³ and about 4 kWh / m ³ .

Within the scope of another development of the invention, it can be provided that a volume flow of the mixture is determined by the ultrasound range or by a correspondingly provided ultrasound reactor and that the ultrasound frequency and / or the duration of treatment of the mixture in the range of the ultrasound field and / or the duration of this determination are determined by the result of this determination. or the conveying capacity of conveying means for conveying the mixture and / or a power of the ultrasonic field is controlled or regulated. In this way, the specific ultrasonic energy input into the mixture can be adjusted in a suitable manner.

Within the scope of yet another development of the method according to the invention, it is provided that at least one content of a constituent, preferably an elementary or molecular constituent, of the mixture and / or its solid phase and / or its liquid phase is determined. The content to be determined may in particular be the nitrogen content, ammonium content or water content. Subsequently, on the basis of the result of this determination, at least one process parameter can be controlled or regulated. At this parameter In turn, in particular, it is the ultrasound frequency, the duration of treatment, the delivery rate or the power of the ultrasound field, which have already been pointed out. For example, if the determination result shows that the residual water content in the solid phase in the treatment of sewage sludge is still too high, the delivery rate can be reduced, thereby increasing the specific ultrasound energy input for the mixture and correspondingly the residual water content reduce.

Within the scope of another development of the method according to the invention, it can be provided that the method proceeds at a temperature of the mixture of about 15 ° C. to about 95 ° C. Alternatively, a temperature of about 73 ° C can be selected as the upper limit for the temperature, which corresponds approximately to the stick temperature of protein. Alternatively, the upper temperature limit can also be selected at about 50 ° C or even only at about 35 ° C. Alternatively, a temperature of about 18 ° C or about 20 ° C may alternatively be selected as the lower temperature limit. However, it is particularly preferred if the process proceeds essentially at ambient temperature.

A first development of the device according to the invention for the ultrasonic treatment of a mixture provides that the at least one ultrasonic reactor used therein is used in accordance with the DE 10 2013 203 043 A1 is formed, as previously indicated above. Furthermore, the at least one ultrasonic reactor may be configured to generate an ultrasonic field having an ultrasonic frequency of about 20 kHz to about 500 kHz, preferably about 20 kHz to 100 kHz, preferably about 23 kHz to 28 kHz. This has already been pointed out above. It has proven to be particularly advantageous if several, preferably substantially identical, ultrasonic reactors are connected in series one behind the other.

Yet another development of the device according to the invention is characterized in that a treatment time of the mixture in the at least one ultrasonic reactor is adjustable, preferably as a function of a dry matter content of the mixture. The appropriate setting can be done via a capacity of the conveyor.

In addition, a further development of the device according to the invention can still be provided that it has a first measuring device for determining a volume flow of the mixture in the device. This first measuring device can be arranged downstream of the at least one ultrasonic reactor. The device is preferably designed to control or regulate the ultrasound frequency and / or the treatment duration and / or the delivery rate of the delivery means and / or the power of the ultrasound field on the basis of the determination result. This has already been pointed out in principle above with reference to the method.

In addition, a device according to the invention may, with a corresponding development, also have a second measuring device for determining at least one content of a constituent of the mixture and / or its solid phase and / or its liquid phase. The said constituent may be an elemental or a molecular constituent of the mixture, the solid phase or the liquid phase. In particular, a measuring device for determining the nitrogen content, the ammonium content or the water content comes into consideration. In this case, the device may be further designed to control or regulate the ultrasound frequency and / or the treatment duration and / or the delivery rate of the delivery means and / or the power of the ultrasound field on the basis of the result of this determination.

In the course of yet another development of the device according to the invention, the separating means may be designed as decanting means in a manner known per se and in this context may comprise, without limitation, a decanter screw and a decanter drum.

In the course of a corresponding development of the device according to the invention can further provided that the decanting means comprise measuring means, which measuring means are adapted to determine a torque of the decanter screw (screw moment); and / or for determining a solids content in the liquid phase, preferably by means of scattered light measurement, transmitted light measurement or the like; and / or for determining a water content of the solid phase. For example, conclusions about the residual water content in the solid phase can be drawn on the basis of the screw moment or on the centrifugal measurements mentioned by way of example, which is particularly advantageous in the purification of sewage sludge.

Between the conveying means and the separating means, preferably between the at least one ultrasonic reactor and the separating means, with appropriate development of the device according to the invention at least one (intermediate) storage container can be arranged, from which the mixture, preferably after the ultrasonic treatment, discontinuously through the downstream lying part of the device is conductive.

Additionally or alternatively, the conveying means may themselves be designed for continuous or discontinuous conveying of the mixture through the at least one ultrasonic reactor or the downstream rest of the apparatus.

It has proved to be particularly advantageous if the conveying means comprise at least one eccentric screw pump.

According to a further aspect, the invention also comprises a use of the solid phase produced by means of the method or the device according to the invention as fertilizer or for the production of fertilizers for agriculture or as fuel.

Further features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the drawing.

1 schematically shows a first embodiment of the device according to the invention; and

2 schematically shows a second embodiment of the device according to the invention.

In 1 is a device for ultrasonic treatment of a mixture as a whole by the reference numeral 1 designated. The mixture, which at reference numerals 2 has at least one liquid phase and at least one solid (solid phase or solid phase) 1 , after separation, which will be discussed in more detail below, also referred to as centrifugate (liquid phase) and solid phase. In the context of the ensuing description of the figures, the mixture is, without limitation, liquid manure, as is obtained in large quantities in livestock farming, for example.

In the device shown 1 becomes the manure 2 in a container 3 stored, which container 3 is also referred to as slurry tank. The container 3 has a cover here 3a in order to avoid in particular an odor nuisance. In the container 3 is a level sensor 3b arranged, which is adapted to the liquid manure level in the container 3 to monitor.

The container 3 is in fluidic-conductive connection with funding 4 , Which in this case an eccentric screw pump 4a as well as corresponding engine means 4b to their operation. The engine means 4b are designed and determined, the eccentric screw pump 4a for the purpose of realizing a certain mixture flow rate.

In fluidic-conductive connection with the conveyor 4 are a number of ultrasonic reactors 5.1 - 5.n provided in series, as shown. Each of the ultrasonic reactors 5.1 - 5.n is designed to be in its reactor interior 5.1a - 5.na a corresponding ultrasonic field 5.1b - 5.nb to produce as symbolically represented. In the present case are the ultrasonic reactors 5.1 - 5.n formed identical to each other, but without the invention would be limited thereto.

Downstream of the ultrasonic reactors 5.1 - 5.n and flow-conductively connected to these are separating agents 6 arranged to separate the mixture 2 in the liquid phase (centrifugate) and the solid phase are determined and formed. Present and without limitation, these separating agents 6 as a decanter or decanter 6a formed and further comprise suitable motor means 6b for operating the decanter or the decanting agent 6a ,

Furthermore, the in 1 shown device 1 a control / regulation device 7 (short: device), which is used to control the operation of the device 1 is designed and furnished. For example, it is the device 7 to a programmable logic controller (PLC). The device 7 is in signal communication with the funding 4 and the separating agents 6 or the respective engine means 4b . 6b , In addition, the device is available 7 in signaling connection with the ultrasonic reactors 5.1 - 5.n , where in 1 for reasons of clarity only the connection to the first ultrasonic reactor 5.1 is shown explicitly. This is the device 7 able to influence the operation of the conveyors via suitable control signals 4 , the ultrasonic reactors 5.1 - 5.n and the separating agent 6 take, for example, an engine power of the engine means 4b . 6b adapted appropriately. This will be discussed in more detail below.

For the purpose of controlling the operation of the device 1 stands the device 7 Furthermore, a signal-related active connection with a number of sensors or measuring points, which determine the state of certain operating parameters of the device 1 to the institution 7 to transfer. On the one hand stands the device 7 in appropriate operative connection with the level sensor 3b if necessary, the operation of the device 1 to interrupt when the level of manure 2 in the container 3 falls below a predetermined level. Furthermore, between the funding 4 and the first ultrasonic reactor 5.1 a measuring point for function validation provided, so also an operation of the device 1 can be specifically influenced, if in Range of subsidies 4 Special circumstances occur, for example, a clogging of funding 4 or emptying the container 3 , A measuring point for function validation is also at a centrifugal outlet 6c the separating agent 6 or the decanter 6a provided to ensure proper operation of the separating agent 6 to monitor. In this context, however, it can also be provided to use the named measuring points for function validation with a corresponding configuration to determine the content of at least one constituent part of the mixture. This constituent may be an elementary or molecular constituent of the mixture, for example nitrogen or ammonium in the actual case. Through the ultrasound treatment of manure 2 by means of ultrasonic reactors 5.1 - 5.n namely, it is possible to achieve that part of the ammonium molecules previously in the liquid phase is converted into the solid phase. By suitable design of said measuring points, this transition can be monitored and, where appropriate, the operation of the device 1 influence in a suitable manner, for example by acting on the engine means 4b the funding 4 and / or by changing operating parameters in the field of ultrasonic reactors 5.1 - 5.n ,

In 1 the addressed measuring points are designated by reference symbols MS1 and MS2.

According to the execution in 1 The device comprises a number of further measuring devices for determining a mixture temperature T, a mixture pressure T and a mixture flow (volume flow) F. These measuring devices are in 1 in the order named ME1 to ME3. They are also in signal communication with the device 7 to determine the measured quantities T, P, F for controlling the operation of the device 1 to be able to use.

The embodiments of the device 1 according to 2 largely correspond to those from 1 , The only difference is in the area between the last ultrasonic reactor 5.n and the separating agents 6 ; here is according to 2 a clipboard container 8th for the sonicated mixture 2 provided in which clipboard container 8th the mixture 2 is stored to "mature" for a period of time between a few minutes and a few hours before it reaches the separating agents 6 arrives. The clipboard container 8th includes a level sensor 8b in a suitable way with the control / regulation device 7 by signal technology. This way is with the device 1 according to 2 a semi-continuous or discontinuous operation possible while the device 1 according to 1 works essentially continuously.

The (proper) operation of the device shown 1 turns out as follows: From the container 3 enters the mixture to be treated 2 , here slurry, to the funding 4 and from there is pressurized by the ultrasonic reactors 5.1 - 5.n promoted, in each of which an ultrasound treatment of the mixture 2 in the field of ultrasound fields 5.1b to 5.nb takes place. The ultrasound treatment time depends in particular on the type and number of ultrasonic reactors and on the delivery rate of the funding 4 from the latter, by means of the device 7 to certain requirements of the treatment, for example, a (maximum) ammonium content in the centrifugate is changeable. The same applies to certain operating parameters of the ultrasonic reactors 5.1 - 5.n , For example, a frequency of the respective ultrasonic fields 5.1b - 5.nb and / or an ultrasonic power. In this way you can - also in interaction with the funding 4 - A specific ultrasonic energy input into the mixture 2 control or regulate. Also to the device 7 reported measurement results T, B, F can be used in this context. In particular, the measured value F can be used to determine a conveying capacity of the conveying means 4 suitably adapted. The sonicated mixture is then passed through the separation means 6 separated into the liquid phase (centrifugate) and the solid phase. In the case of manure, the liquid phase (with reduced nitrogen content) can then be applied to fields in a manner known per se, while the solid phase is sent for further recovery. As already mentioned, the ultrasonic treatment makes it possible to significantly increase the nitrogen concentration in the solid phase compared with an untreated mixture, so that the solid phase subsequently becomes even more interesting from a business point of view for subsequent utilization, for example for the production of fertilizers ,

In the case of an equally possible treatment of sewage sludge as a mixture in the device shown 1 In addition, it has been shown that the residual water content in the solid phase can be significantly reduced by up to three percentage points compared to untreated sewage sludge due to the proposed ultrasound treatment. As a result, sewage sludge or its solid phase become even more interesting for subsequent recovery, for example for the production of fertilizers. In addition, the reduced in their water solid phase is also better for thermal utilization (combustion) than in the case without ultrasonic treatment.

As a suitable lower temperature limit for the operation of the device 1 a value of about 15 ° C has proved to be favorable. Even cheaper possibly an operation with a lower temperature limit in the range of about 18 ° C or about 20 ° C or at ambient temperature. As upper temperature limit for operation of the device 1 has a value of less than 100 ° C, for example, 95 ° C proved to be favorable. It may be even cheaper to operate the device at a temperature ≤ 73 ° C (stick temperature of protein). Operation can be particularly advantageous at a maximum of about 50 ° C or even a maximum of 35 ° C.

As an example, a maximum delivery pressure of the subsidies 4 up to 6 be bar. From here, the mixture is conveyed in the manner of a so-called free jet, so that the final pressure in the region of the separating agent 6 is essentially still 0 bar.

An ultrasonic frequency in the range of the ultrasonic fields 5.1b - 5.nb may be about 28 kHz, preferably about 23 kHz to about 25 kHz. However, the Applicant has also carried out successful experiments using an ultrasonic frequency of up to about 100 kHz or even up to about 500 kHz.

Depending on the volume of the mixture and the type, number and operation of the ultrasonic reactors was worked with a specific ultrasonic energy input into the mixture in the range of about 0.2 kWh / m ³ to about 4 kWh / m ³ .

In operation of the device 1 can be - with appropriate design ser Separiermittel 6 - Also use a differential speed of decanter screw and decanter drum for control purposes. For example, it is possible to deduce the solids content in the solid phase by measuring the screw moment. For the same purpose turbidity measurements (transmitted light or scattered light measurements) or the like can be carried out on the centrifugate in order in particular to determine a residual solids content in the centrifugate.

In the treatment of sewage sludge by the proposed ultrasonic treatment, a 1.8% to 3% lower water content in the solid phase has been achieved.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102013203043 A1 [0014, 0015, 0020]

Claims (22)

Process for the treatment of a mixture ( 2 ) of at least one liquid phase and at least one solid, in particular liquid manure or sewage sludge, comprising the steps of: a) generating an ultrasonic field ( 5.1b - 5.nb ); b) conveying the mixture ( 2 ) in or through the region of the ultrasonic field ( 5.1b - 5.nb ); c) Treatment of the mixture ( 2 with ultrasound in the area; and d) separation of the mixture ( 2 ) into the liquid phase and the solid phase after the sonication. Method according to claim 1, characterized in that for generating the ultrasonic field ( 5.1b - 5.nb ) at least one ultrasonic reactor ( 5.1 - 5.n ) used by the mixture ( 2 ) is passed continuously or discontinuously, preferably an ultrasonic reactor ( 5.1 - 5.n ) is used according to DE 10 2013 203 043 A1. A method according to claim 1 or 2, characterized in that for generating the ultrasonic field ( 5.1b - 5.nb ) several ultrasonic reactors ( 5.1 - 5.n ) in series and continuously or discontinuously from the mixture ( 2 ), wherein preferably at least one ultrasonic reactor ( 5.1 - 5.n ) is used according to DE 10 2013 203 043 A1. Method according to one of claims 1 to 3, characterized in that the ultrasonic field ( 5.1b - 5.nb ) at an ultrasonic frequency of about 20 kHz to about 500 kHz, preferably about 20 kHz to about 100 kHz, most preferably about 23 kHz to 28 kHz. Method according to one of claims 1 to 4, characterized in that a specific ultrasonic energy input into the mixture ( 2 ) is determined as a function of a dry substance content of the mixture, preferably a treatment duration of the mixture in the ultrasonic field ( 5.1b - 5.nb ) increases with the dry matter content of the mixture. Method according to one of claims 1 to 5, characterized in that a specific ultrasonic energy input into the mixture ( 2 ) on a subsidy of subsidies ( 4 ) for conveying the mixture, which specific ultrasonic energy input is preferably between about 0.2 kWh / m ³ and about 4 kWh / m ³ . Method according to one of claims 1 to 6, characterized in that a volume flow (F) of the mixture ( 2 ) through the ultrasonic range or through a correspondingly provided ultrasonic reactor ( 5.1 - 5.n ), preferably the ultrasonic reactor or the ultrasonic reactors according to claim 2 or 3, is determined, and that based on the result of this determination, the ultrasonic frequency according to claim 4 and / or the treatment time according to claim 5 and / or the delivery rate according to claim 6 and / or power of the ultrasound field ( 5.1b - 5.nb ) is controlled or regulated. Method according to one of claims 1 to 7, characterized in that at least a content of a component, preferably an elementary constituent, of the mixture ( 2 ) and / or its solid phase and / or its liquid phase is determined, most preferably the content of nitrogen or water, and that based on the result of this determination at least one process parameter is controlled or regulated, in particular the ultrasonic frequency according to claim 4 and / or Treatment duration according to claim 5 and / or the delivery rate according to claim 6 and / or a power of the ultrasonic field ( 5.1b - 5.nb ). Method according to one of claims 1 to 8, characterized in that the method at a temperature (T) of the mixture of about 15 ° C to about 95 ° C or to about 73 ° C, preferably about 18 ° C to about 50 ° C. , most preferably about 20 ° C to about 35 ° C, in particular substantially at ambient temperature. Contraption ( 1 ) for the ultrasonic treatment of a mixture ( 2 ) of at least one liquid phase and at least one solid, in particular liquid manure or sewage sludge, comprising: a) at least one ultrasonic reactor ( 5.1 - 5.n ) for generating an ultrasonic field ( 5.1b - 5.nb ); b) subsidies ( 4 ) for conveying the mixture ( 2 ) in or through the region of the ultrasonic field ( 5.1b - 5.nb ); and c) separating agents ( 6 ) for separating the mixture ( 2 ) into the liquid phase and the solid phase, which separating agent ( 6 ) in the conveying direction of the mixture ( 2 ) behind the ultrasonic reactor ( 5.1 - 5.n ) are arranged. Contraption ( 1 ) according to claim 10, characterized in that the at least one ultrasonic reactor ( 5.1 - 5.n ) is designed according to DE 10 2013 203 043 A1. Contraption ( 1 ) according to claim 10 or 11, characterized in that the at least one ultrasonic reactor ( 5.1 - 5.n ) is adapted to an ultrasonic field ( 5.1b - 5.nb ) at an ultrasonic frequency of about 20 kHz to about 500 kHz, preferably about 20 kHz to about 100 kHz, most preferably about 23 kHz to 28 kHz. Contraption ( 1 ) according to any one of claims 10 to 12, characterized in that a plurality, preferably substantially the same ultrasonic reactors ( 5.1 - 5.n ) are connected in series. Contraption ( 1 ) according to any one of claims 10 to 13, characterized in that a treatment time of the mixture ( 2 ) in the at least one ultrasonic reactor ( 5.1 - 5.n ) is adjustable, in particular as a function of a dry matter content of the mixture ( 2 ), preferably via a conveying capacity of the conveying means ( 4 ). Contraption ( 1 ) according to one of claims 10 to 14, characterized by a first measuring device (ME3) for determining a volume flow (F) of the mixture ( 2 ) in the device ( 1 ), preferably downstream of the at least one ultrasonic reactor ( 5.1 - 5.n ), the device ( 1 ) is further adapted, based on the result of this determination, the ultrasonic frequency according to claim 12 and / or the duration of treatment according to claim 14 and / or a delivery rate of the conveyor ( 4 ) and / or a power of the ultrasonic field ( 5.1b - 5.nb ) or to regulate. Contraption ( 1 ) according to any one of claims 10 to 15, characterized by second measuring means for determining at least a content of a constituent, preferably an elementary constituent, of the mixture ( 2 ) and / or its solid phase and / or its liquid phase, most preferably the content of nitrogen or water, the device ( 1 ) is further adapted, based on the result of this determination, the ultrasonic frequency according to claim 12 and / or the duration of treatment according to claim 14 and / or a delivery rate of the conveyor ( 4 ) and / or a power of the ultrasonic field ( 5.1b - 5.nb ) or to regulate. Contraption ( 1 ) according to any one of claims 10 to 16, characterized in that the separating means ( 6 ) are designed as decanting. Contraption ( 1 ) according to claim 17, characterized in that the decanting means comprise measuring means, which measuring means are designed for a) determining a torque of a decanter screw; and / or b) determining a solids content of the liquid phase, preferably by means of scattered light measurement, transmitted light measurement or the like; and / or c) determining a water content of the solid phase. Contraption ( 1 ) according to one of claims 10 to 18, characterized in that between the conveying means ( 4 ) and the separating agents ( 6 ), preferably between the at least one ultrasonic reactor ( 5.1 - 5.n ) and the separating agents ( 6 ), at least one storage container ( 8th ) from which the mixture ( 2 ) is discontinuously conductable through the downstream part of the device. Contraption ( 1 ) according to one of claims 10 to 19, characterized in that the conveying means ( 4 ) for the continuous or discontinuous conveying of the mixture ( 2 ) by the at least one ultrasonic reactor ( 5.1 - 5.n ) is trained. Contraption ( 1 ) according to one of claims 10 to 20, characterized in that the conveying means ( 4 ) at least one eccentric screw pump ( 4a ). Use of the method according to one of claims 1 to 9 or the device ( 1 ) according to any one of claims 10 to 21 produced as a fertilizer or for the production of fertilizers for agriculture or as fuel.

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