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DE102005009683B4 - Process for the recovery of solids - Google Patents

Process for the recovery of solids Download PDF

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Publication number
DE102005009683B4
DE102005009683B4 DE102005009683.2A DE102005009683A DE102005009683B4 DE 102005009683 B4 DE102005009683 B4 DE 102005009683B4 DE 102005009683 A DE102005009683 A DE 102005009683A DE 102005009683 B4 DE102005009683 B4 DE 102005009683B4
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Prior art keywords
screw press
screw
centrifuge
solid
sieve passage
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Expired - Fee Related
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DE102005009683.2A
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DE102005009683A1 (en
Inventor
Friedrich Eugen Weigand
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Fan Separator GmbH
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Fan Separator GmbH
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B30B9/16—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with two or more screws or worms
    • B30B9/163—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with two or more screws or worms working in different chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/26—Permeable casings or strainers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Treatment Of Sludge (AREA)
  • Fertilizers (AREA)

Abstract

Verfahren zur Gewinnung, und insbesondere auch zur Nutzung, von Feststoffen, die aus Abwässern der industriellen Tierproduktion mit Schneckenpressen und Zentrifugen gewonnen und zum Zwecke des Einstreuens in die Stallanlagen und zur Erzeugung eines nährstoffreichen Kompostes genutzt werden, dadurch gekennzeichnet, daß in einer Kaskade (4) von Maschinen mit Hilfe von groben Sieben, in der ersten Schneckenpresse (5) die gröberen Feststoffanteile (6) abgeschieden werden, der Siebdurchgang (7) einer zweiten Schneckenpresse (8), mit einer Spaltweite von 0,3–0,5 mm zugeführt wird, der Siebdurchgang (9) aus dieser zweiten Maschine in einer Zentrifuge (11) weiter behandelt wird, dessen Schlammauslauf (12) einer dritten Schneckenpresse (13) zugeleitet und der Siebdurchgang (18) dieser dritten Schneckenpresse, mit einer Spaltweite von 0,2–0,3 mm, mit dem Klarlauf (17) aus der Zentrifuge zusammengeführt wird.Process for the recovery, and in particular also for the use, of solids obtained from waste water from industrial animal production by screw presses and centrifuges and used for the purpose of littering in the cowsheds and for producing a nutrient-rich compost, characterized in that in a cascade (4 ) of machines by means of coarse sieves, in the first screw press (5), the coarser solid particles (6) are deposited, the screen passage (7) of a second screw press (8), fed with a gap width of 0.3-0.5 mm the sewer passage (9) from this second machine is further treated in a centrifuge (11), the sludge outlet (12) fed to a third screw press (13) and the screen passage (18) of this third screw press, with a gap width of 0.2 -0.3 mm, is brought together with the clear flow (17) from the centrifuge.

Description

Gegenstand der Erfindung ist ein Verfahren zur Gewinnung, und insbesondere auch zur Nutzung, von Feststoffen, die aus Abwässern der industriellen Tierproduktion mit Schneckenpressen und Zentrifugen gewonnen und zum Zwecke des Einstreuens in die Stallanlagen und zur Erzeugung eines nährstoffreichen Kompostes genutzt werden.The invention relates to a method for the extraction, and in particular also for the use, of solids obtained from waste water from industrial animal production with screw presses and centrifuges and for the purpose of littering in the barns and the Production of a nutrient-rich compost can be used.

Stand der TechnikState of the art

Charakterisierung der bekannten technischen LösungenCharacterization of the known technical solutions

Zur Beherrschung der Abwasserprobleme in Anlagen der Massentierhaltung wurden Schneckenpressen entwickelt, die in der Lage sind, die Feststoffe aus der Gülle als feucht krümliges Material abzutrennen. Eine entsprechende Maschine ist in der EP 0 367 037 A2 dargestellt.To control the wastewater problems in factory farms, screw presses have been developed that are able to separate the solids from the liquid manure as a moist, crumbly material. A corresponding machine is in the EP 0 367 037 A2 shown.

Im praktischen Betrieb zeigte sich, daß in der abgeschiedenen Flüssigkeit ein Anteil an feinen Mineralstoffen enthalten ist, der sich in Rohrleitungen und Behältern absetzte und eine weitere Aufarbeitung der Flüssigkeit, beispielsweise durch eine Flotation erschwerte.In practical operation it was found that in the deposited liquid, a proportion of fine minerals is contained, which settled in pipelines and containers and further processing of the liquid, for example by flotation difficult.

Da die Leistung der Abscheidung über einen Hydrozyklon nicht ausreichend ist und der Einsatz von Dekantern zu hohe Kosten verursacht, wurde in der Patentschrift EP 0 904 156 A1 eine Zentrifuge vorgestellt, die diese Aufgabe besser erfüllt.Since the performance of the deposition via a hydrocyclone is not sufficient and the use of decanters causes too high a cost, was in the patent EP 0 904 156 A1 presented a centrifuge that better fulfills this task.

Ziel der ErfindungObject of the invention

Das Ziel der Erfindung ist es, den möglichen Verwendungsgebieten entsprechend den Feststoff in verschiedenen Qualitäten abnehmen zu können, um beispielsweise die groben Bestandteile als Einstreu in den Stallanlagen verwendet zu können, während die feineren Bestandteile mit einem möglichst hohen Anteil an Stickstoff, Phosphor, Kalium und anderen wichtigen Bestandteilen einer Kompostierung zugeführt werden.The aim of the invention is to be able to decrease the potential areas of use according to the solid in different qualities, for example, to use the coarse ingredients as litter in the barns, while the finer components with the highest possible proportion of nitrogen, phosphorus, potassium and other important components of a composting be supplied.

Die groben Feststoffanteile der Gülle, die vorrangig aus Anteilen der Schalen, der zur Fütterung eingesetzten und nicht verdauten Getreidearten bestehen, weisen eine geringere biologische Aktivität auf. Sie sind daher besser zur Rückführung als Einstreu in die Stallanlagen geeignet, als die Menge der insgesamt abscheidbaren Feststoffe.The coarse solids content of manure, which consists predominantly of shell constituents of the feed and undigested cereals, has lower biological activity. They are therefore more suitable for recycling than bedding in the barns, as the amount of total precipitable solids.

Durch die gesonderte Abscheidung der groben Feststoffe wird außerdem die für eine ergänzende Bindung der sehr feinen oder gelösten Nährstoffe erforderlichen Menge an Additiven bei der weitergehenden Fest-Flüssig-Trennung reduziert.The separate separation of the coarse solids also reduces the amount of additive required for supplemental binding of the very fine or dissolved nutrients in the further solid-liquid separation.

Merkmale der ErfindungFeatures of the invention

Die Merkmale der Erfindung zeichnen sich dadurch aus, daß mehrere Geräte zur Fest-Flüssig-Trennung mit unterschiedlicher Trennleistung in einer Kaskade hintereinander geschaltet werden.The features of the invention are characterized in that several devices for solid-liquid separation with different separation performance in a cascade are connected in series.

So werden beispielsweise die Siebe der Schneckenpressen mit in jeder Maschine kleiner werdenden Spaltweiten ausgerüstet und der anfallende Feststoff getrennt der jeweiligen Verwendung zugeführt.Thus, for example, the screens of the screw presses are equipped with smaller gap widths in each machine and the resulting solid is fed separately to the respective use.

Ausführungsbeispielembodiment

Die 1 zeigt eine Rinderanlage (1) zur Erzeugung von Milch, aus der Gülle (2) mit einer Trockensubstanz von zirka 8% abgeleitet wird und in der ein Behälter (3) zum Ausgleich der unterschiedlichen Tagesmengen und zur Homogenisierung vorhanden ist.The 1 shows a cattle plant ( 1 ) for the production of milk, from manure ( 2 ) is derived with a dry matter of about 8% and in which a container ( 3 ) to compensate for the different daily amounts and for homogenization is present.

Von hier aus wird die Gülle der Anlage zur Fest-Flüssig-Trennung (4) zugeführt und gelangt hier in die erste Schneckenpresse (5), in der ein Sieb mit einer Spaltweite von 0,75 mm eingebaut ist. Der anfallende grobe Feststoff (6) kann als Einstreu in die Stallanlage (1) zurückgeführt werden.From here, the manure of the plant for solid-liquid separation ( 4 ) and arrives here in the first screw press ( 5 ), in which a sieve with a gap width of 0.75 mm is installed. The resulting coarse solid ( 6 ) can be used as bedding in the stable ( 1 ) to be led back.

Der Siebdurchgang (7) aus der Schneckenpresse (5) gelangt in eine zweite Schneckenpresse (8), in der ein Sieb mit einer Spaltweite von 0,5 mm eingebaut ist. Zur Bindung weiterer Nährstoffe, wie Stickstoff, Phosphor, Kalium können der Siebdurchgang (7) der Schneckenpresse (5) und/oder der Siebdurchgang (9) mit Additiven (10) vermischt werden.The sieve passage ( 7 ) from the screw press ( 5 ) enters a second screw press ( 8th ), in which a sieve with a gap width of 0.5 mm is installed. For binding other nutrients, such as nitrogen, phosphorus, potassium, the sieve passage ( 7 ) of the screw press ( 5 ) and / or the sieve passage ( 9 ) with additives ( 10 ) are mixed.

Der Siebdurchgang (9) wird nun der Zentrifuge (11) mit dem Ziel zugeführt, über den Schlamm (12) die Schwerstoffe abzuscheiden, die mit dem Sieb der dritten Schneckenpresse (13) mit einer Spaltweite von 0,25 mm nicht abgetrennt werden können.The sieve passage ( 9 ) is now the centrifuge ( 11 ) with the aim of getting over the mud ( 12 ) to separate the heavy materials, which with the sieve of the third screw press ( 13 ) can not be separated with a gap width of 0.25 mm.

Der von der zweiten Schneckenpresse (9) abgetrennte Feststoff (14) und der abgetrennte Feststoff (15) der dritten Schneckenpresse (13) werden in der Kompostierungsanlage (16) weiter aufgearbeitet.That of the second screw press ( 9 ) separated solid ( 14 ) and the separated solid ( 15 ) of the third screw press ( 13 ) are used in the composting plant ( 16 ) further worked up.

Das Zentrifugal (17) wird gemeinsam mit dem Siebdurchgang (18) einer Lagerung (19) oder einer anderweitigen Behandlung zugeführt.The centrifugal ( 17 ) together with the sieve passage ( 18 ) of a storage ( 19 ) or otherwise treated.

Claims (6)

Verfahren zur Gewinnung, und insbesondere auch zur Nutzung, von Feststoffen, die aus Abwässern der industriellen Tierproduktion mit Schneckenpressen und Zentrifugen gewonnen und zum Zwecke des Einstreuens in die Stallanlagen und zur Erzeugung eines nährstoffreichen Kompostes genutzt werden, dadurch gekennzeichnet, daß in einer Kaskade (4) von Maschinen mit Hilfe von groben Sieben, in der ersten Schneckenpresse (5) die gröberen Feststoffanteile (6) abgeschieden werden, der Siebdurchgang (7) einer zweiten Schneckenpresse (8), mit einer Spaltweite von 0,3–0,5 mm zugeführt wird, der Siebdurchgang (9) aus dieser zweiten Maschine in einer Zentrifuge (11) weiter behandelt wird, dessen Schlammauslauf (12) einer dritten Schneckenpresse (13) zugeleitet und der Siebdurchgang (18) dieser dritten Schneckenpresse, mit einer Spaltweite von 0,2–0,3 mm, mit dem Klarlauf (17) aus der Zentrifuge zusammengeführt wird.Process for the recovery, and in particular also for the use, of solids obtained from waste water from industrial animal production with screw presses and centrifuges and used for the purpose of littering in the cowsheds and for the production of a nutrient-rich compost, characterized in that in a cascade ( 4 ) of machines using coarse sieves, in the first screw press ( 5 ) the coarser solids fractions ( 6 ), the sieve passage ( 7 ) a second screw press ( 8th ), is supplied with a gap width of 0.3-0.5 mm, the sieve passage ( 9 ) from this second machine in a centrifuge ( 11 ), whose sludge outlet ( 12 ) a third screw press ( 13 ) and the sieve passage ( 18 ) of this third screw press, with a gap width of 0.2-0.3 mm, with the clear-running ( 17 ) is brought together from the centrifuge. Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß der grobe Feststoff (6) aus der ersten Schneckenpresse (5) als Einstreu in den Stallanlagen verwendet wird.Process according to Claim 1, characterized in that the coarse solid ( 6 ) from the first screw press ( 5 ) is used as litter in the barns. Verfahren nach Anspruch 1 und 2 dadurch gekennzeichnet, daß der Siebdurchgang (7) der ersten Schneckenpresse (5) und/oder der Siebdurchgang (9) der zweiten Schneckenpresse (8) mit Additiven (10) vermischt wird.Process according to Claims 1 and 2, characterized in that the sieve passage ( 7 ) of the first screw press ( 5 ) and / or the sieve passage ( 9 ) of the second screw press ( 8th ) with additives ( 10 ) is mixed. Verfahren nach Anspruch 1 und 3 dadurch gekennzeichnet, daß der Feststoff (14) der zweiten Schneckenpresse (8) mit dem Feststoff (15) der dritten Schneckenpresse (13) in der Kompostierung (16) verwendet wird.Process according to Claims 1 and 3, characterized in that the solid ( 14 ) of the second screw press ( 8th ) with the solid ( 15 ) of the third screw press ( 13 ) in composting ( 16 ) is used. Verfahren nach Anspruch 1 und 3 dadurch gekennzeichnet, daß die Maschinen übereinander angeordnet sind und die Siebdurchgänge der Schneckenpressen und der Schlamm der Zentrifuge selbständig der nachfolgenden Einrichtung zufließt.A method according to claim 1 and 3, characterized in that the machines are arranged one above the other and the screen passages of the screw presses and the sludge of the centrifuge flows independently to the subsequent device. Verfahren nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet, daß die groben Siebe Siebspalten von 0,75–1,0 mm aufweisen.Method according to one of the preceding claims, characterized in that the coarse sieves have sieve gaps of 0.75-1.0 mm.
DE102005009683.2A 2005-03-03 2005-03-03 Process for the recovery of solids Expired - Fee Related DE102005009683B4 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012018650A1 (en) * 2012-09-20 2014-04-10 Röhren- und Pumpenwerk Bauer Gesellschaft m.b.H. Method for separating litter from manure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD147091A1 (en) * 1979-10-29 1981-03-18 Paul Wedekind PROCESS FOR MECHANICAL-MICROBIOLOGICAL TREATMENT OF PIG GRAPHIC
EP0367037A2 (en) * 1988-11-03 1990-05-09 Fan Engineering Gmbh Dehydration process of aqueous suspensions, and screw press therefor
EP0904156A1 (en) * 1996-04-25 1999-03-31 Fan Separator GmbH Process and apparatus for the separation of heavier from lighter fractions in aqueous slurries by means of centrifugal force

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD147091A1 (en) * 1979-10-29 1981-03-18 Paul Wedekind PROCESS FOR MECHANICAL-MICROBIOLOGICAL TREATMENT OF PIG GRAPHIC
EP0367037A2 (en) * 1988-11-03 1990-05-09 Fan Engineering Gmbh Dehydration process of aqueous suspensions, and screw press therefor
EP0904156A1 (en) * 1996-04-25 1999-03-31 Fan Separator GmbH Process and apparatus for the separation of heavier from lighter fractions in aqueous slurries by means of centrifugal force

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