DK166580B1 - PROCEDURE FOR THE CONVERSION OF AMMONIUM-containing FERTILIZERS OR SIMILAR - Google Patents
PROCEDURE FOR THE CONVERSION OF AMMONIUM-containing FERTILIZERS OR SIMILAR Download PDFInfo
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- DK166580B1 DK166580B1 DK174486A DK174486A DK166580B1 DK 166580 B1 DK166580 B1 DK 166580B1 DK 174486 A DK174486 A DK 174486A DK 174486 A DK174486 A DK 174486A DK 166580 B1 DK166580 B1 DK 166580B1
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
Description
DK 166580 B1DK 166580 B1
Opfindelsen vedrører en fremgangsmåde til omdannelse af ammoniumholdig gylle eller lignende til et i vid udstrækning lugtfrit gødningsmateriale, som er uskadeligt for grundvandet, og som indeholder mindst ét ammoniumabsor-5 faerende lermineral.The invention relates to a process for converting ammonium-containing slurry or the like to a largely odorless fertilizer material which is harmless to the groundwater and which contains at least one ammonium absorbent clay mineral.
Inden for landbruget er der det problem i forbindelse med store kvæghold, at den herved frembragte betydelige mængde gylle ikke længere kan tilføres landbrugsjorden, uden at grundvandet belastes med uacceptable nitratmængder. Hertil 10 kommer den gennemtrængende lugt fra gyllen. Da gyllen næsten ikke nedbrydes af jordbakterier i vintermånederne, optræder der i dette tidsrum en speciel kraftig belastning af grundvandet med nitrogen, så at lovgivningsmagten har indført indskrænkninger i tidspunkterne for udkørsel af 15 gylle. Desuden er den mængde gylle, som må køres ud på et bestemt landbrugsareal, blevet begrænset, så at der opstår et betydeligt overskud af gylle.In agriculture, there is the problem of large cattle holdings that the considerable amount of manure thus produced can no longer be supplied to agricultural land without the groundwater being loaded with unacceptable amounts of nitrate. Add to that 10 the pervasive odor from the slurry. Since the slurry is hardly degraded by soil bacteria during the winter months, during this period a particularly heavy load of groundwater is exposed to nitrogen, so that the legislative authority has introduced restrictions on the times for the discharge of 15 slurries. In addition, the amount of manure that must be exported to a specific agricultural area has been limited so that a considerable surplus of manure is generated.
På den anden side indeholder gylle, som består af en blanding af ekskrementer, urin og mineraler af animalsk op-20 rindelse, værdifulde gødningsstoffer og mineraler, så at der er interesse for at tilføre disse stoffer til landbrugsjorden af hensyn til gødskning. Den i gyllen indeholdte nitrogen indeholdes i alt væsentligt i form af ammonium, som efter udkørsel eller anbringelse på jorden ved 25 overskridelse af jordens tilbageholdelsesevne meget let udvaskes af regn og belaster grundvandet, hvorefter jordbakterierne omsætter nitrogenet i ammoniummet til nitrogen i nitratforbindelser, før ammoniummet kan optages af planterne som næring.On the other hand, manure, which consists of a mixture of excrement, urine and minerals of animal origin, contains valuable fertilizers and minerals so that there is an interest in adding these substances to the agricultural soil for fertilization. The nitrogen contained in the slurry is essentially contained in the form of ammonium which, after exiting or depositing on the soil by excess of the retention capacity of the soil, is very easily washed out by rain and loading the groundwater, after which the soil bacteria convert the nitrogen in the ammonium to nitrogen in nitrate compounds before the ammonium can is absorbed by the plants as nourishment.
30 Fra firmaet Sud-Chemie AG kendes et middel til gyllebehandling (technische Informationen viber "AGRIBEN" 10/79), der er fremstillet af et specielt lermineral med betegnelsen bentonit. Ved hjælp af dette middel skulle ammoniumnitrogenet blive adsorberet for derved at forhindre lugtgener i 35 starten, når gyllen kommer i forbindelse med luften. Det DK 166580 B1 2 omhandlede litteratursted indeholder ingen angivelser af sammensætningen af dette AGRIBEN-middel.30 From the company Sud-Chemie AG is known a manure treatment (technische Informationen viber "AGRIBEN" 10/79), which is made of a special clay mineral, called bentonite. By means of this agent, the ammonium nitrogen should be adsorbed to prevent odor nuisance initially when the slurry comes into contact with the air. The literature site referred to in DK 166580 B1 2 contains no indication of the composition of this AGRIBEN agent.
I DE-OS 32 25 454 angiver det samme firma imidlertid yderligere enkeltheder vedrørende dette middel eller vedrørende 5 en lignende fremgangsmåde. Ved den deri angivne fremgangsmåde til behandling af fækalt affald ved behandling med lermineraler benyttes mikroorganismer til omdannelse af affaldet, idet disse mikroorganismer er indlejret i lermineraler, såsom bentonit. Bentonit er blevet valgt på grund ' af dets store specifikke overflade, der formår at optage store mængder af mikroorganismer. Hovedeffekten opnås altså her ved hjælp af de i lermineralet indeholdte mikroorganismer, så at en forholdsvis ringe mængde, som fx 2-3 kg til 1 m^ kvæg- eller svinegylle eller 8-10 kg til 1 m·* hønsegyl-15 le, åbenbart er tilstrækkeligt til forhindring af lugtgenerne .However, in DE-OS 32 25 454, the same company discloses further details of this agent or of a similar method. In the method disclosed therein for the treatment of fecal waste by treatment with clay minerals, microorganisms are used to convert the waste, these microorganisms being embedded in clay minerals such as bentonite. Bentonite has been chosen because of its large specific surface, which is capable of absorbing large quantities of microorganisms. The main effect is thus achieved here by means of the microorganisms contained in the clay mineral, so that a relatively small amount, such as 2-3 kg to 1 m 2 cattle or pig manure or 8-10 kg to 1 m 2 is sufficient to prevent the odor genes.
Det er endvidere fra DE-OS 33 17 241 kendt at fremstille en naturgødning på basis af hønsegødning ved sammenblanding med bentonitmel og brændt kalk. En sådan fremgangsmåde har 20 imidlertid den væsentlige ulempe, at den tilsatte brændte kalk uddriver ammoniak af hønsegødningen eller -gyllen, hvilken ammoniak er en giftig gas, der fører til andre betydelige lugtgener. Endvidere ødelægger den brændte kalk bentonittens evne til at optage ammonium.It is further known from DE-OS 33 17 241 to produce a natural fertilizer based on chicken manure by mixing it with bentonite flour and burnt lime. However, such a method has the major disadvantage that the added burnt lime expels ammonia from the chicken manure or slurry, which ammonia is a toxic gas that leads to other significant odor nuisances. Furthermore, the burnt lime destroys the bentonite's ability to absorb ammonium.
25 I DE-OS 23 42 999 beskrives en fremgangsmåde til fremstilling af et gødningsmiddel af kogødning, idet gødningen eller gyllen tilsættes organiske stoffer med en stor løsningsevne, som fx tørv. Endvidere tilsættes en ringe mængde ler, fx i form af bentonit, men denne mængde er imidlertid ..o så ringe, at der ikke kan ske nogen binding af hele ammoniummængden .DE-OS 23 42 999 discloses a process for preparing a cow fertilizer fertilizer, adding organic matter with a high solubility, such as peat, to the fertilizer or slurry. Furthermore, a small amount of clay is added, for example in the form of bentonite, but this amount is, however, so low that no bonding of the entire amount of ammonium can occur.
Endelig kendes fra DE-OS 15 92 812 og DE-OS 15 92 758 fremgangsmåder, der imidlertid ikke egner sig til at binde den i gylle indeholdte ammonium ved sorption.Finally, from DE-OS 15 92 812 and DE-OS 15 92 758 there are known methods which, however, are not suitable for binding the slurry containing ammonium by sorption.
DK 166580 B1 3DK 166580 B1 3
Den foreliggende opfindelse har til formål at tilvejebringe en fremgangsmåde til omdannelse af gylle eller lignende til et anvendeligt gødningsstof, ved hvilken fremgangsmåde det ovenfor beskrevne såkaldte gylleproblem løses, dvs. ved 5 hvilken fremgangsmåde der af gylle eller lignende frembringes et i vid udstrækning lugtfrit gødningsstof, som ikke belaster grundvandet, og som på miljøvenlig måde kan tilføres landbrugsjorden praktisk talt på en hvilken som helst årstid.The present invention has for its object to provide a method for converting slurry or the like into a useful fertilizer by which the above-described so-called slurry problem is solved, ie. by 5, any method of manure or the like generates a largely odorless fertilizer which does not affect the groundwater and which can be applied to the agricultural land practically at any season in an environmentally friendly way.
10 I overensstemmelse med opfindelsen udnyttes den erkendelse, at gyllens grundvandsskadelige virkning i hovedsagen hidrører fra det i gyllen indeholdte ammonium, som efter bakteriel omdannelse til nitrat kan udvaskes fra agerjorden af regnvand og dermed i forbindelse med en stor tilførsels-15 koncentration når grundvandet. Det ovenfor angivne formål opnås i overensstemmelse med opfindelsen ved, at gyllen tilsættes en sådan mængde lermineral, at i hovedsagen hele mængden af det i gyllen indeholdte ammonium ved absorption bindes i lermineralet under fuld udnyttelse af udvekslings-20 eller bytningskapaciteten for en negativ overskudsladning i lermaterialets krystalgitter, og at det faste gødningsmateriale derefter adskilles fra væske.In accordance with the invention, it is utilized to recognize that the slurry's groundwater damaging effect is essentially derived from the slurry ammonium contained in the slurry, which, after bacterial conversion to nitrate, can be leached from the arable land of rainwater and thus in connection with a large supply concentration reaches groundwater. The above object is achieved in accordance with the invention in that the slurry is added to such an amount of clay mineral that substantially all of the ammonium contained in the slurry is absorbed in the clay mineral by full utilization of the exchange or exchange capacity for a negative excess charge in the clay material. crystal lattice and that the solid fertilizer material is then separated from liquid.
Resultatet er et jordlignende materiale med muldagtig konsistens, hvilket materiale kan oplagres midlertidigt 25 og/eller spredes ud ved hjælp af spredemaskiner på landbrugsarealer. Det i lermineralet bundne ammonium nedbrydes så langsomt af jordbakterierne og tilføres langsomt jorden som næringsstof.The result is a soil-like material with muddy consistency, which material can be temporarily stored and / or spread out by means of spreaders on agricultural land. The ammonium-bound ammonium is then slowly decomposed by the soil bacteria and slowly added to the soil as a nutrient.
Som lermineral kan fordelagtigt benyttes et montmorillonit-30 materiale, der findes som jordart (såkaldt benonit).Advantageously, a montmorillonite material present as a soil (so-called benonite) can be used as a clay mineral.
Som lermateriale kan imidlertid også benyttes et vermicu-litmateriale, som ganske vist er meget drøjt, men samtidigt DK 166580 B1 4 dyrere. Sådanne lermineraler forekommer i naturen i store mængder og tjener samtidigt som jordforbedringsmateriale.However, as a clay material can also be used a vermiculite material, which is very much overpriced, but at the same time more expensive. Such clay minerals occur in nature in large quantities and at the same time serve as soil improvement material.
Fremgangsmåden ifølge opfindelsen kan hensigtsmæssigt omfatte følgende fremgangsmådetrin: 5 a) ventilering af gyllen med luft i et røreværk, b) tilsætning af lermateriale (fx montmorillonit) i et røreværk, c) henstand af blandingen, indtil der har indstillet sig en sorptionsligevægt (ca. 24 timer), og 10 d) adskillelse af fast gødningsmateriale og væske, fx i en dekanteringscentrifuge.The process according to the invention may conveniently comprise the following process steps: a) ventilation of the slurry with air in a stirrer, b) addition of clay material (e.g. montmorillonite) in a stirrer, c) standing of the mixture until a sorption equilibrium is established (ca. 24 hours), and 10 d) separation of solid fertilizer material and liquid, eg in a decanting centrifuge.
En specielt virksom binding af ammoniummet til krystalgitteret i det benyttede lermineral opnås, når fremgangsmådetrinene b) og c) udføres to gange efter hinanden ved 15 tilførsel af den halve lermineralmængde pr. gang. På denne måde sikres det, at lermineralets optagelsesevne udnyttes fuldt ud.A particularly effective bonding of the ammonium to the crystal lattice in the clay mineral used is achieved when process steps b) and c) are carried out twice in succession by the addition of half the clay mineral quantity per minute. walk. In this way it is ensured that the absorption capacity of the clay mineral is fully utilized.
I det tilfælde, at gyllen indeholder større faste partikler, kan disse gøres mindre ved udførelse af fremgangs-20 mådetrinet a). Der opnås en specielt stor optagelse af ammonium i lermineralet, når blandingens pH-værdi før tilsætningen af lermineralet indstilles på en værdi på mere end 8, dvs. på en alkalisk værdi, ved tilsætning af natronlud eller lignende.In the case that the slurry contains larger solid particles, these can be reduced by performing the process step a). Particularly large uptake of ammonium is obtained in the clay mineral when the pH of the mixture before the addition of the clay mineral is adjusted to a value of more than 8, ie. on an alkaline value, by the addition of baking soda or the like.
25 Det ved fremgangsmådetrin d) frembragte faste materiale kan tørres eventuelt ved hjælp af varm luft, for at frembringe et gødningsmateriale, som kan lagres og er let at transportere. En anden fordelagtig behandling af gødningsmaterialet består i, at der slutteligt tilføres kalkstensmel 30 eller lignende. Ved denne foranstaltning opnås, at gødningsmaterialets restfugtighed bindes, og at der fremkommer et gødningsmateriale, som kan spredes eller strøs ud, og som samtidigt kan tjene som jordforbedringsmateriale, da DK 166580 B1 5 materialet på gunstig måde påvirker de jordmekaniske egenskaber (muldstruktur, vandoptagelsesevne og lignende). Endvidere flokkuleres de kolloide bestanddele i gyllen i vid udstrækning ved tilførsel af montmorillonit, hvorved en 5 gelatinevirkning på jordoverfladen undgås.The solid material produced by process step d) may be optionally dried by hot air to produce a manure material which can be stored and is easily transportable. Another advantageous treatment of the fertilizer material is to finally add limestone flour 30 or the like. By this measure, the residual moisture of the fertilizer material is obtained and a fertilizer material can be spread which can be spread or sprayed and which can simultaneously serve as soil improvement material, since the material has a favorable effect on the soil mechanical properties (soil structure, water absorption ability and similar). Furthermore, the colloidal constituents in the slurry are extensively flocculated by the application of montmorillonite, thereby avoiding a gelatin effect on the soil surface.
Andre fordelagtige udførelsesformer eller foranstaltninger ved fremgangsmåden ifølge opfindelsen fremgår af de øvrige underkrav. Opfindelsen vil i det følgende blive nærmere forklaret.Other advantageous embodiments or measures of the method according to the invention are apparent from the other subclaims. The invention will be explained in more detail below.
10 Den i en lagertank opbevarede gylle, fx svinegylle, gylle fra køer eller ekskrementer fra hønsehold, tilføres et passende røreværk, i hvilket materialet ventileres ved lufttilførsel. Ved denne aerobe bearbejdning omdannes urinstoffet, der findes i gyllen, til ammoniumcarbonat. Ved 15 den selvopvarmning af gyllen, som sker under denne proces, dræbes patogene kim, og der sker allerede en betydelig lugtformindskelse. Findes der for store faste partikler i gyllen, kan disse gøres mindre før ventilering i en passende sønderdelingsindretning.The manure stored in a storage tank, for example pig manure, manure from cows or excrement from chicken holdings, is fed with a suitable agitator in which the material is ventilated by air supply. In this aerobic processing, the urea contained in the slurry is converted to ammonium carbonate. By the self-heating of the slurry that occurs during this process, pathogenic germs are killed and significant odor reduction is already occurring. If large solid particles are found in the slurry, these can be made smaller before ventilation in a suitable decomposition device.
20 Den på denne måde ventilerede gylle tilsættes derefter ved hjælp af et røreværk i et større sedimentationsbassin, af den type, som er almindeligt benyttet i sukkerraffinaderier, et lermineral, specielt et montmorillonit-materiale. Blandingen får lov til at stå, med periodisk omrøren, i et 25 tidsrum, der er tilstrækkeligt til, at der indstiller sig en sorptionsligevægt (ca. 24 timer). Derefter sker der i en dekanteringscentrifuge eller i en anden passende indretning en adskillelse af fast gødningsmateriale og resterende væske.The slurry thus vented is then added by means of a stirrer in a larger sedimentation basin, of the type commonly used in sugar refineries, a clay mineral, especially a montmorillonite material. The mixture is allowed to stand, with periodic stirring, for a period of time sufficient to allow a sorption equilibrium to settle (about 24 hours). Thereafter, in a decanting centrifuge or in another suitable device, separation of solid fertilizer material and residual liquid takes place.
30 Restvæsken indeholder så få reststoffer, at det efter laboratoriekontrol kan afgives som spildevand enten til et afløb eller til et rensningsanlæg. Det faste gødningsmateriale tørres derefter i et varmlufttørringsanlæg, hvorved DK 166580 B1 6 der fremkommer et i vid udstrækning lugtfrit gødningsmateriale, som ikke længere belaster grundvandet.30 The residual fluid contains so few residues that after laboratory control it can be discharged as waste water either to a drain or to a treatment plant. The solid fertilizer material is then dried in a hot air drying system, whereby a largely odorless fertilizer material which no longer burdens the groundwater is obtained.
For at opnå en specielt god udnyttelse af lermineralets optagelsesevne, sker tilførslen af lermineral i røreværket 5 hensigtsmæssigt først med den halve mængde af lermaterialet og derefter lades lermineralet virke ved periodisk omrøring. Dernæst tilføres endnu engang den samme mængde lermineral, og processen gentages.In order to obtain a particularly good utilization of the absorption capacity of the clay mineral, the supply of clay mineral in the agitator 5 is conveniently done first with half the amount of the clay material and then the clay mineral is allowed to work by periodic stirring. Then the same amount of clay mineral is added again and the process is repeated.
Lermineralets optagelsesevne optimeres desuden ved, at pH-10 værdien i gyllen ved tilsætning af natronlud eller lignende, indstilles på en værdi på mere end 8, fortrinsvis på 8,2, før tilsætning af lermineralet.Furthermore, the absorption capacity of the clay mineral is optimized by adjusting the pH-10 value in the slurry with the addition of baking soda or the like to a value of more than 8, preferably 8.2, before adding the clay mineral.
Funktionen i fremgangsmåden ifølge opfindelsen består i, at de ammoniumioner (NH4+), som er indeholdt i gyllen, bindes 15 ved hjælp af krystalgitteret i montmorilloniten eller et andet lermineral ved, at der mellem tetraederlag i krystalgitteret findes en negativ overskudsladning, som kan mættes af den positivt ladede ammoniumkation.The function of the process according to the invention consists in the ammonium ions (NH4 +) contained in the slurry being bonded by means of the crystal lattice in the montmorillonite or another clay mineral by the presence of a negative excess charge which can be saturated by the tetrahedral layer in the crystal lattice. the positively charged ammonium cation.
Denne binding af ammoniummet til lermineralets krystalgit-20 ter er så stærk, at ammoniumionen ikke længere kan udvaskes af regn. Foruden ammoniumioner bliver også andre kationer, der er indeholdt i gyllen (fx calcium-, magnesium- etc.) bundet, så at heller ikke disse længere kan udvaskes.This bond of the ammonium to the crystal lattices of the clay mineral is so strong that the ammonium ion can no longer be washed out by rain. In addition to ammonium ions, other cations contained in the slurry (e.g., calcium, magnesium, etc.) are also bound so that these can no longer be washed out.
Laboratorieforsøg har vist, at 1 g montmorillonit er i 25 stand til at binde 1 mval kation. Dette betyder, at 1 g montmorillonit kan binde 18 mg ammonium eller 20 mg calcium. Indeholder 100 g gylle fx 360 mg ammonium, betyder dette, at der til 100 g gylle kræves mindst 20 g montmorillonit under den forudsætning, at dette lermineral ikke 30 allerede er belastet forud med andre stoffer. Det har vist sig, at der ved brug af 40 g montmorillonit til 100 g gylle med gennemsnitsegenskaber er tilstrækkelige reserver til DK 166580 B1 7 stede til i vid udstrækning at binde den totale mængde af den i gyllen forekommende ammonium foruden andre kationer.Laboratory experiments have shown that 1 g of montmorillonite is capable of binding 1 mval cation. This means that 1 g of montmorillonite can bind 18 mg of ammonium or 20 mg of calcium. Containing 100 g of slurry, for example 360 mg of ammonium, this means that 100 g of slurry is required for at least 20 g of montmorillonite, provided that this clay mineral is not already loaded with other substances. It has been found that using 40 g of montmorillonite to 100 g of slurry with average properties, sufficient reserves for DK 166580 B1 7 are present to largely bind the total amount of ammonium present in the slurry in addition to other cations.
Foretages behandlingen med montmorillonit på den tidligere ventilerede gylleblanding i to eller flere trin, benyttes 5 der ved hver proces hensigtsmæssigt den halve eller tilsvarende mængde af lermineralet. Et overskud af jordmineral skader ikke, men fører i værste fald til en uøkonomisk drift.If the treatment with montmorillonite is carried out on the previously ventilated slurry mixture in two or more steps, then in each process the half or equivalent amount of the clay mineral is suitably used. A surplus of soil mineral does not harm, but at worst leads to an uneconomical operation.
Lermineralet montmorillonit forekommer i naturen og kan i 10 forholdsvis ren tilstand nedbrydes som betgnit. Dette lermineral tjener i øvrigt ud over til ammoniumbinding også til jordbundsforbedring af bestemte jorde, da lermineralet forbedrer jordens kationbytnings- eller kationudvekslings-evne.The clay mineral montmorillonite occurs in nature and can be decomposed in a relatively pure state as a base. This clay mineral, in addition to ammonium bonding, also serves for soil improvement of certain soils as the clay mineral improves the cation exchange or cation exchange ability of the soil.
15 I stedet for montmorillonit kan også benyttes et andet lermineral, som kendes under betegnelsen vermiculit, og som i henseende til ammonium har endog større optagelsesevne, men som er dyrere.Instead of montmorillonite, another clay mineral, known as vermiculite, may be used, which, with respect to ammonium, has even greater uptake, but which is more expensive.
For bedre at kunne lagre det frembragte faste materiale 20 midlertidigt og sprede materialet på landbrugsjorde, er det hensigtsmæssigt at tilsætte kalkstensmel (CaCC^) eller lignende til det faste materiale for at binde den resterende fugt og frembringe et gødningsstof, som kan spredes og strøs ud. Denne tilsætning af kalkstensmel har desuden den 25 fordel, at det i forbindelse med sure og tunge jorde kan tjene til jordbundsforbedring.In order to better store the produced solid temporarily and disperse the material on agricultural soils, it is appropriate to add limestone flour (CaCC3) or the like to the solid material to bind the remaining moisture and produce a fertilizer which can be spread and sprinkled. . In addition, this addition of limestone flour has the advantage that in connection with acidic and heavy soils it can serve for soil improvement.
Den mængde kalkstensmel, som tilføres, afstemmes hensigtsmæssigt på en sådan måde, at der til 100 kg fast gødningsstof tilsættes mindst 10 kg, fortrinsvis 20 kg kalkstens-30 mel.The amount of limestone flour supplied is suitably adjusted in such a way that at least 10 kg of solid fertilizer is added to 100 kg of solid fertilizer, preferably 20 kg of limestone flour.
Claims (13)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3513480A DE3513480C1 (en) | 1985-04-16 | 1985-04-16 | Process for the production of a fertilizer substance that is harmless to groundwater |
| DE3513480 | 1985-04-16 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK174486D0 DK174486D0 (en) | 1986-04-16 |
| DK174486A DK174486A (en) | 1986-10-17 |
| DK166580B1 true DK166580B1 (en) | 1993-06-14 |
Family
ID=6268074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK174486A DK166580B1 (en) | 1985-04-16 | 1986-04-16 | PROCEDURE FOR THE CONVERSION OF AMMONIUM-containing FERTILIZERS OR SIMILAR |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0201722B1 (en) |
| DE (2) | DE3513480C1 (en) |
| DK (1) | DK166580B1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3711356A1 (en) * | 1987-04-02 | 1988-10-20 | Hoelter Heinz | Process for the preparation of a fertiliser |
| DE4004434A1 (en) * | 1990-02-10 | 1991-08-14 | Werner Richter | Spreadable, fertilising soil improving agent - contains liq. manure, lignite ash and opt. quick lime or calcium carbonate and/or stone meal |
| BE1004101A3 (en) * | 1990-12-05 | 1992-09-22 | Treat Tech For Sludges N V Afg | Method for processing slurry to a solid product. |
| DK11191D0 (en) * | 1991-01-23 | 1991-01-23 | Flocco Tec Aps | PROCEDURE AND APPARATUS FOR SEPARATING SEATS IN A HIGH THIRTY MATERIAL THICKNESS PHASE AND A DOUBLE PHONE WITH A DESIRED - HIGH, MODERATE OR LOW - N CONTENT |
| DE4114370A1 (en) * | 1991-05-02 | 1992-11-05 | Rainer Fischer | Compsns. for treating farmyard slurry |
| DE4119504A1 (en) * | 1991-06-13 | 1992-12-17 | Horst J Schilkowski | Solid mineral-organic fertiliser providing convenient disposal of excess manure - consists of gypsum mixed with animal and/or human faeces and/or urine which is then dried |
| DE4131296A1 (en) * | 1991-09-20 | 1993-03-25 | Georg Dr Halfter | METHOD AND APPARATUS FOR THE PREPARATION OF ANIMAL EXCREEMENTS, GUELL AND JACH |
| DK94292D0 (en) * | 1992-07-22 | 1992-07-22 | Flocco Tec Aps | PROCEDURE AND APPARATUS FOR WASTE CLEANING |
| FR2717173B1 (en) * | 1994-03-10 | 1996-04-26 | Pugliese Freres Entr Sarl | Process for the treatment of pig manure and product obtained from said process. |
| WO1997021647A1 (en) * | 1995-12-15 | 1997-06-19 | Power Plant Aggregates Of Iowa, Inc. | Method of stabilizing odors in manure |
| FR2905373B1 (en) * | 2006-09-06 | 2009-05-29 | Pigeon Et Cie Snc | PROCESS FOR MANUFACTURING A SLURRY ENRICHED AS AN AMENDMENT PRODUCT FOR SOIL. |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1364387A (en) * | 1917-01-11 | 1921-01-04 | Clarence P Landreth | Method of and apparatus for treating sewage |
| CH138890A (en) * | 1929-05-30 | 1930-03-31 | Moser Isele Jacques Felix | Process for the preservation of manure, especially manure and manure. |
| DE1592812C3 (en) * | 1964-01-21 | 1975-03-20 | Armin Prof. Dr. 6900 Heidelberg Weiss | Use of kaolins or kaolin-containing clays with embedded compounds as long-term fertilizers |
| DE1592758A1 (en) * | 1965-10-14 | 1971-01-21 | Sponsel Dr Ing Kurt | Process for making humus |
| IT975204B (en) * | 1972-10-09 | 1974-07-20 | Finsterwalder U | PROCEDURE FOR THE PRODUCTION OF A FERTILIZER FROM THE BOVINE STATE |
| AT359094B (en) * | 1978-05-22 | 1980-10-27 | Alfa Laval Stalltech | METHOD AND DEVICE FOR TREATING LIQUID MIST |
| CH642341A5 (en) * | 1979-08-30 | 1984-04-13 | Josef Deubler | Process for the preparation of a fertiliser |
| DE2943962C2 (en) * | 1979-10-31 | 1982-12-23 | Josef 4354 Datteln Knepper | Process for the production of solid fertilizer by separating liquid manure and the device for carrying out this process |
| DE3023428C2 (en) * | 1980-06-23 | 1989-07-20 | Josef 8521 Wielerstett Ostermaier | Process for processing liquid manure and housing pump for carrying out the process |
| DE3225454C2 (en) * | 1982-07-07 | 1985-04-18 | Süd-Chemie AG, 8000 München | Process for the treatment of faecal waste |
| DE3317241A1 (en) * | 1983-05-11 | 1984-11-15 | Ralf F. Piepho Abwassertechnik Gmbh, 3015 Wennigsen | NATURAL FERTILIZER BASED ON CHICKEN MIST AND METHOD FOR THE PRODUCTION THEREOF |
-
1985
- 1985-04-16 DE DE3513480A patent/DE3513480C1/en not_active Expired
-
1986
- 1986-04-09 DE DE8686104817T patent/DE3687802D1/en not_active Expired - Fee Related
- 1986-04-09 EP EP86104817A patent/EP0201722B1/en not_active Expired - Lifetime
- 1986-04-16 DK DK174486A patent/DK166580B1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DK174486A (en) | 1986-10-17 |
| DE3513480C1 (en) | 1986-11-13 |
| EP0201722A2 (en) | 1986-11-20 |
| EP0201722B1 (en) | 1993-02-24 |
| EP0201722A3 (en) | 1988-01-07 |
| DK174486D0 (en) | 1986-04-16 |
| DE3687802D1 (en) | 1993-04-01 |
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