EP0876844B1 - Method and apparatus for treating waste - Google Patents
Method and apparatus for treating waste Download PDFInfo
- Publication number
- EP0876844B1 EP0876844B1 EP98108158A EP98108158A EP0876844B1 EP 0876844 B1 EP0876844 B1 EP 0876844B1 EP 98108158 A EP98108158 A EP 98108158A EP 98108158 A EP98108158 A EP 98108158A EP 0876844 B1 EP0876844 B1 EP 0876844B1
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- EP
- European Patent Office
- Prior art keywords
- waste
- opening
- drum
- organic
- coarse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/1855—Discharging devices combined with sorting or separating of material with separator defining termination of crushing zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/007—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls specially adapted for disintegrating refuse
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/185—Discharging devices combined with sorting or separating of material with more than one separator
Definitions
- the present invention relates to a device and a Process for the treatment of waste with organic Proportions, with at least one rotating crushing drum with heavy material discharge, the crushing drum at least one freely movable inside Has grinding media and the grinding media or media by means of a Separating device retained in the comminution drum will and will and the shredding drum one Retaining ring, the uncrushed waste up to Reaching a corresponding, predetermined particle size in the shredding drum holds back and in the area of an axis of rotation has two opposing openings.
- EP-A-0 302 551 describes an apparatus and a Waste treatment and treatment processes. Doing so the waste is shredded with the help of a shredding device, the finely ground ingredients separated from the coarser components that are difficult or difficult to grind be separated. The finely ground fraction contains organic and inorganic components. Also in US-A-5 322 792 Processing device for waste described does not allow simple, fast and complete separation from inorganic and organic components of the to be processed Waste.
- the object of the present invention is therefore a device and a method for processing waste organic components of the type mentioned at the beginning provide which is a fully automated and continuous Treatment of waste when using cheaper Apparatus and less energy consumption with simultaneous separation guaranteed of organic and inorganic components.
- a shredding drum has waste in the area of their Axis of rotation on two opposite openings, the first opening for the entry of the waste to be treated and for Discharge of shredded organic components of the waste and the second opening for discharging the separated inorganic constituents of the waste, the first Opening has a larger diameter than the second Opening and transportation of the sunken crushed inorganic components for the second opening by means of a Screw discharge takes place.
- the device has one of the comminution drums downstream coarse screening device for picking up and screening the crushed organic waste.
- This coarse screening device a fine screen device can be connected upstream or downstream. This ensures that possible through the crushing drum sieved residual impurities not separated be, so that for the subsequent biodegradation predominantly pure organic suspension is available. additionally can be a part of the low solids separated by the sieving Water into the crushing drum for adjustment a predetermined and advantageous solids content and the Viscosity of the waste returned in the shredding drum become. This ensures an environmentally friendly and resource-saving Processing waste.
- the process according to the invention for the treatment of waste is using the previously described invention Device operated.
- a first process step the waste to be processed in the shredding drum introduced, the separation of the inorganic and organic components of the waste takes place.
- the inorganic Ingredients are opened through a second opening of the shredding drum dissipated.
- the one in the shredding drum remaining organic components of the waste are in a second process step up to a predetermined particle size crushed.
- This creates an organic, watery one Suspension coming from the crushing drum onto a coarse screen is carried out. In doing so, non-crushable organic Components separated.
- the resulting organic suspension is removed from the coarse screen in a further process step a fine sieve is discharged. After another fine screening of the organic suspension becomes the low-solids water obtained partially returned to the shredding drum.
- one last step is the resulting organic Suspended suspension of further biological treatment.
- the fine screening of the organic suspension before Coarse screening carried out can be designed in several stages.
- the figure shows a device 10 for processing waste, especially organic waste.
- the device 10 includes a rotatable shredding drum 12 Heavy material discharge, a coarse screening device 26 and one Fine screening device 28.
- the comminution drum 12 has in inside of it at least one freely moving grinding element (not shown).
- the or the grinding media exist usually made of stone or metal balls.
- the or the Grinding bodies are in the comminution drum by means of a separating device 16 12 withheld. Via a waste entry chute 14 is the waste to be processed into the interior of the Crushing drum 12 transferred.
- the comminution drum 12 also has a retaining ring 18 on the uncrushed waste until a corresponding, predetermined particle size in the comminution drum 12 holds back. Furthermore, the comminution drum 12 in the region of its axis of rotation 36 two opposing openings 32, 34 on.
- the first opening 34 is used for entry of the waste to be processed via the waste entry chute 14 and for the discharge of the crushed organic components of the Descent via a second discharge chute 24.
- the second opening 32 is used to discharge the separated inorganic constituents waste via a first discharge chute 20.
- the separated ones inorganic components, especially the sand content of the Waste are fed to a sand wash (not shown).
- the coarse screening device downstream of the comminution drum 12 26 takes the discharged from the crushing drum 12 crushed organic waste and carries out screening this through.
- the coarse screening device 26 has one Mesh size of 8 - 30 mm. Those remaining on the coarse screen 26 coarser organic components are removed and further recycling or disposal. in this connection it is in particular parts made of wood, leather or Plastic.
- the device 10 also has one of the coarse screening device 26 downstream fine screening device 28.
- the one in the coarse screening device 26 already roughly sieved organic suspension is fed to the fine screen device 28.
- the fine screening device 28 has a mesh size of 0.5 mm to 3 mm on. Part of the low-residue water can be discharged through one of the Fine screening device 28 leading to the comminution drum 12 Water return device 30 into the comminution drum 12 be returned.
- Both the coarse sieve and the fine sieve device 26, 28 can be designed as a tension shaft screening machine his.
- the waste to be processed in the shredding drum 12 introduced.
- the separation of inorganic takes place and organic components of the waste.
- the organic components swim in the upper area of the aqueous suspension forming in the comminution drum 12.
- the inorganic parts sink and become Opening 32 transported. This is done using a so-called Screw discharge (not shown).
- the organic Ingredients become up to a predetermined particle size crushed and then transferred to the coarse screen 26 as above already described. After another, finer screening the resulting organic suspension of the other biological Treatment e.g. fed in fermentation towers.
Abstract
Description
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zur Aufbereitung von Abfällen mit organischen Anteilen, mit mindestens einer drehbaren Zerkleinerungstrommel mit Schwerstoffausschleusung, wobei die Zerkleinerungstrommel in ihrem Inneren mindestens einen frei beweglich angeordneten Mahlkörper aufweist und der oder die Mahlkörper mittels einer Trennvorrichtung in der Zerkleinerungstrommel zurückgehalten wird bzw. werden und die Zerkleinerungstrommel einen Rückhaltering aufweist, der unzerkleinerte Abfälle bis zum Erreichen einer entsprechenden, vorbestimmten Teilchengröße in der Zerkleinerungstrommel zurückhält und im Bereich einer Drehachse zwei sich gegenüberliegende Öffnungen aufweist.The present invention relates to a device and a Process for the treatment of waste with organic Proportions, with at least one rotating crushing drum with heavy material discharge, the crushing drum at least one freely movable inside Has grinding media and the grinding media or media by means of a Separating device retained in the comminution drum will and will and the shredding drum one Retaining ring, the uncrushed waste up to Reaching a corresponding, predetermined particle size in the shredding drum holds back and in the area of an axis of rotation has two opposing openings.
Zur Aufbereitung von Abfällen mit organischen Anteilen, z.B. Biomüll, Restmüll oder Hausmüll, vor der biologischen Behandlung sind Naß- und Trockenverfahren bekannt. Ziel der Aufbereitung ist es dabei, diejenigen Bestandteile abzutrennen, welche den biologischen Behandlungsprozeß stören, die Anlagentechnik beschädigen oder die Qualität der entstehenden Produkte beeinträchtigen. Insbesondere betrifft dies Metalle, Glas, Steine, Sand, aber auch Kunststoffe, Leder oder ähnliche Stoffe.For the treatment of waste with organic components, e.g. Organic waste, residual waste or household waste, before biological Treatment wet and dry processes are known. goal of Processing is to separate those components which interfere with the biological treatment process, the System technology damage or the quality of the resulting Affect products. This particularly affects metals, Glass, stones, sand, but also plastics, leather or the like Substances.
Das am häufigsten eingesetzte Störstoffabtrennungsverfahren ist die Handauslese dieser Stoffe aus den aufzubereitenden Abfällen. Dieses Verfahren verursacht jedoch erhebliche Personalkosten und ist vergleichsweise wenig wirkungsvoll. Darüberhinaus ist dieses Verfahren hygienisch bedenklich.The most commonly used method for removing contaminants is the manual selection of these substances from the ones to be processed Waste. However, this procedure causes significant Personnel costs and is comparatively ineffective. In addition, this process is hygienically questionable.
Des weiteren sind Verfahren zur automatischen Störstoffabtrennung bekannt, bei denen die sogenannte Schwimm-Sink-Trennung angewandt wird. Dabei werden Stofflöser, welche in der Papierindustrie verwendet werden, für die Abfallaufbereitung angepaßt. Die bei diesem Trennverfahren eingesetzten Apparate werden diskontinuierlich betrieben. Nachteilig an diesem Stand der Technik ist, daß derartige bekannte Anlagen einen sehr hohen Energieverbrauch aufweisen. Die Durchsatzleistung der zudem sehr teuren Apparate ist aus statischen Gründen und aufgrund der diskontinuierlichen Betriebsweise auf etwa 80 Tonnen pro Arbeitstag begrenzt.There are also procedures for the automatic separation of contaminants known in which the so-called swim-sink separation is applied. In doing so, cloth solvers are used in the paper industry used for waste treatment customized. The apparatus used in this separation process are operated discontinuously. A disadvantage of this stand the technology is that such known systems a very have high energy consumption. The throughput of the also very expensive equipment is for static reasons and due to the discontinuous mode of operation to about 80 Limited tons per working day.
Die EP-A-0 302 551 beschreibt eine Vorrichtung und ein Verfahren zur Behandlung und Aufbereitung von Müll. Dabei wird mit Hilfe einer Zerkleinerungsvorrichtung der Müll zerkleinert, wobei die fein gemahlenen Bestandteile getrennt von den gröberen, nicht oder schlecht zu zerkleinernden Bestandteilen getrennt werden. Die fein gemahlene Fraktion enthält organische und anorganische Bestandteile. Auch die in der US-A-5 322 792 beschriebene Aufbereitungsvorrichtung für Müll erlaubt keine einfache und schnelle, sowie vollständige Trennung von anorganischen und organischen Bestandteilen des aufzubereitenden Abfalls.EP-A-0 302 551 describes an apparatus and a Waste treatment and treatment processes. Doing so the waste is shredded with the help of a shredding device, the finely ground ingredients separated from the coarser components that are difficult or difficult to grind be separated. The finely ground fraction contains organic and inorganic components. Also in US-A-5 322 792 Processing device for waste described does not allow simple, fast and complete separation from inorganic and organic components of the to be processed Waste.
Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung und ein Verfahren zur Aufbereitung von Abfällen mit organischen Bestandteilen der eingangs genannten Art bereitzustellen, welche eine vollautomatische und kontinuierliche Aufbereitung der Abfälle bei Einsatz kostengünstigerer Apparate und weniger Energieaufwand bei gleichzeitiger Trennung von organischen und anorganischen Bestandteilen gewährleistet.The object of the present invention is therefore a device and a method for processing waste organic components of the type mentioned at the beginning provide which is a fully automated and continuous Treatment of waste when using cheaper Apparatus and less energy consumption with simultaneous separation guaranteed of organic and inorganic components.
Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst.This task is characterized by the characteristics of the independent Claims resolved.
Vorteilhafte Ausgestaltungen sind in den Unteransprüchen dargestellt.Advantageous refinements are presented in the subclaims.
Bei einer erfindungsgemäßen Vorrichtung zur Aufbereitung von Abfällen weist eine Zerkleinerungstrommel im Bereich ihrer Drehachse zwei sich gegenüberliegende Öffnungen auf, wobei die erste Öffnung zum Eintrag der aufzubereitenden Abfälle und zum Austrag von zerkleinerten organischen Bestandteilen des Abfalls und die zweite Öffnung zum Austrag der abgetrennten anorganischen Bestandteile des Abfalls dient, wobei die erste Öffnung einen größeren Durchmesser aufweist als die zweite Öffnung und der Transport der abgesunkenen zerkleinerten anorganischen Bestandteile zur zweiten Öffnung mittels eines Schneckenaustrags erfolgt. Durch eine derartige Ausgestaltung ist gewährleistet, daß die den späteren biologischen Abbau störenden Schwer- und Leichtstoffe bereits zu Anfang des Aufbereitungsvorganges durch die Zerkleinerungstrommel getrennt und sortiert werden. Die getrennte Ausgabe der insbesondere anorganischen und andererseits organischen Bestandteile gewährleistet den kontinuierlichen Betrieb der Vorrichtung. Zudem ist der Energieverbrauch wesentlich geringer als bei bekannten Vorrichtungen. Da die erfindungsgemäße Vorrichtung kontinuierlich betrieben werden kann, sind auch sehr große Durchsatzleistungen erzielbar. In a device according to the invention for processing A shredding drum has waste in the area of their Axis of rotation on two opposite openings, the first opening for the entry of the waste to be treated and for Discharge of shredded organic components of the waste and the second opening for discharging the separated inorganic constituents of the waste, the first Opening has a larger diameter than the second Opening and transportation of the sunken crushed inorganic components for the second opening by means of a Screw discharge takes place. With such a configuration it is guaranteed that those which disrupt the later biodegradation Heavy and light materials already at the beginning of the treatment process separated by the crushing drum and be sorted. The separate issue of the particular inorganic and on the other hand organic components ensures the continuous operation of the device. In addition, the energy consumption is much lower than in known devices. Since the device according to the invention can be operated continuously are also very large Throughput achievable.
In einer weiteren vorteilhaften Ausgestaltung der erfindungsgemäßen Vorrichtung weist diese eine der Zerkleinerungstrommel nachgeschaltete Grobsiebvorrichtung zur Aufnahme und Siebung der zerkleinerten organischen Abfälle auf. Dieser Grobsiebvorrichtung kann eine Feinsiebvorrichtung vor- oder nachgeschaltet werden. Dadurch ist gewährleistet, daß mögliche, durch die Zerkleinerungstrommel nicht abgetrennte restliche Störstoffe ausgesiebt werden, so daß für den nachfolgenden biologischen Abbau eine überwiegend reine organische Suspension zur Verfügung steht. Zusätzlich kann ein Teil des durch die Siebung abgetrennten feststoffarmen Wassers in die Zerkleinerungstrommel zur Einstellung eines vorbestimmten und vorteilhaften Feststoffgehaltes und der Viskosität des Abfalls in der Zerkleinerungstrommel rückgeführt werden. Dies gewährleistet eine umweltfreundliche und resourcensparende Aufbereitung von Abfällen.In a further advantageous embodiment of the invention The device has one of the comminution drums downstream coarse screening device for picking up and screening the crushed organic waste. This coarse screening device a fine screen device can be connected upstream or downstream. This ensures that possible through the crushing drum sieved residual impurities not separated be, so that for the subsequent biodegradation predominantly pure organic suspension is available. additionally can be a part of the low solids separated by the sieving Water into the crushing drum for adjustment a predetermined and advantageous solids content and the Viscosity of the waste returned in the shredding drum become. This ensures an environmentally friendly and resource-saving Processing waste.
Das erfindungsgemäße Verfahren zur Aufbereitung von Abfällen wird unter Verwendung der vorhergehend beschriebenen erfindungsgemäßen Vorrichtung betrieben. Dabei werden in einem ersten Verfahrensschritt die aufzubereitenden Abfälle in die Zerkleinerungstrommel eingebracht, wobei die Trennung der anorganischen und organischen Bestandteile des Abfalls stattfindet. Die anorganischen Bestandteile werden über eine zweite Öffnung der Zerkleinerungstrommel abgeführt. Die in der Zerkleinerungstrommel verbleibenden organischen Bestandteile des Abfalls werden in einem zweiten Verfahrensschritt bis zu einer vorbestimmten Teilchengröße zerkleinert. Dabei entsteht eine organische, wässrige Suspension, die aus der Zerkleinerungstrommel auf ein Grobsieb ausgetragen wird. Dabei werden nicht zerkleinerbare organische Bestandteile abgetrennt. Die entstehende organische Suspension wird in einem weiteren Verfahrensschritt aus dem Grobsieb auf ein Feinsieb ausgetragen. Nach einer weiteren Feinsiebung der organischen Suspension wird das erhaltende feststoffarme Wasser teilweise in die Zerkleinerungstrommel rückgeführt. In einem letzten Verfahrensschritt wird die resultierende organische Suspension der weiteren biologischen Behandlung zugeführt. The process according to the invention for the treatment of waste is using the previously described invention Device operated. In a first process step the waste to be processed in the shredding drum introduced, the separation of the inorganic and organic components of the waste takes place. The inorganic Ingredients are opened through a second opening of the shredding drum dissipated. The one in the shredding drum remaining organic components of the waste are in a second process step up to a predetermined particle size crushed. This creates an organic, watery one Suspension coming from the crushing drum onto a coarse screen is carried out. In doing so, non-crushable organic Components separated. The resulting organic suspension is removed from the coarse screen in a further process step a fine sieve is discharged. After another fine screening of the organic suspension becomes the low-solids water obtained partially returned to the shredding drum. In one last step is the resulting organic Suspended suspension of further biological treatment.
In einer vorteilhaften Ausgestaltung des erfindungsgemäßen Verfahrens wird die Feinsiebung der organischen Suspension vor der Grobsiebung durchgeführt. Der Verfahrensschritt der Grob- und/oder Feinsiebung kann dabei mehrstufig ausgebildet sein.In an advantageous embodiment of the method according to the invention the fine screening of the organic suspension before Coarse screening carried out. The process step of rough and / or fine screening can be designed in several stages.
Weiterhin ist es möglich, die Sandanteile der abgetrennten anorganischen Bestandteile des Abfalls einer Sandwäsche zuzuführen.It is also possible to remove the sand from the separated to supply inorganic components of the waste to a sand wash.
Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung des in der Zeichnung dargestellten, bevorzugten Ausführungsbeispiels.Further details, advantages and features of the invention emerge derive from the following description of the in the drawing illustrated, preferred embodiment.
Die Figur zeigt eine Vorrichtung 10 zur Aufbereitung von Abfällen,
insbesondere Abfälle mit organischen Anteilen. Die Vorrichtung
10 umfaßt dabei eine drehbare Zerkleinerungstrommel 12 mit
Schwerstoffausschleusung, eine Grobsiebvorrichtung 26 und eine
Feinsiebvorrichtung 28. Die Zerkleinerungstrommel 12 weist in
ihrem Inneren mindestens einen freibeweglich angeordneten Mahlkörper
(nicht dargestellt) auf. Der oder die Mahlkörper bestehen
dabei üblicherweise aus Stein oder Metallkugeln. Der oder die
Mahlkörper werden mittels einer Trennvorrichtung 16 in der Zerkleinerungstrommel
12 zurückgehalten. Über eine Abfalleintragsschurre
14 wird der aufzubereitende Abfall in das Innere der
Zerkleinerungstrommel 12 überführt.The figure shows a device 10 for processing waste,
especially organic waste. The device
10 includes a rotatable shredding
Die Zerkleinerungstrommel 12 weist zudem einen Rückhaltering 18
auf, der unzerkleinerte Abfälle bis zum Erreichen einer entsprechenden,
vorbestimmten Teilchengröße in der Zerkleinerungstrommel
12 zurückhält. Weiterhin weist die Zerkleinerungstrommel 12
im Bereich ihrer Drehachse 36 zwei sich gegenüberliegende Öffnungen
32, 34 auf. Die erste Öffnung 34 dient dabei zum Eintrag
der aufzubereitenden Abfälle über die Abfalleintragsschurre 14
und zum Austrag der zerkleinerten organischen Bestandteile des
Abfalls über eine zweite Austragsschurre 24. Die zweite Öffnung
32 dient zum Austrag der abgetrennten anorganischen Bestandteile
des Abfalls über eine erste Austragsschurre 20. Die abgesonderten
anorganischen Bestandteile, insbesondere die Sandanteile des
Abfalles, werden einer Sandwäsche (nicht dargestellt) zugeführt.The
Die der Zerkleinerungstrommel 12 nachgeschaltete Grobsiebvorrichtung
26 nimmt die aus der Zerkleinerungstrommel 12 abgegebenen
zerkleinerten organischen Abfälle auf und führt eine Siebung
dieser durch. Die Grobsiebvorrichtung 26 weist dabei eine
Siebmaschenweite von 8 - 30 mm auf. Die auf dem Grobsieb 26 verbleibenden
gröberen organischen Bestandteile werden abgeführt
und einer weiteren Verwertung bzw. Entsorgung zugeführt. Hierbei
handelt es sich insbesondere um Teile aus Holz, Leder oder
Kunststoff.The coarse screening device downstream of the
Die Vorrichtung 10 weist weiterhin eine der Grobsiebvorrichtung
26 nachgeschaltete Feinsiebvorrichtung 28 auf. Die in der Grobsiebvorrichtung
26 bereits grob gesiebte organische Suspension
wird der Feinsiebvorrichtung 28 zugeführt. Die Feinsiebvorrichtung
28 weist dabei eine Siebmaschenweite von 0,5 mm bis 3 mm
auf. Ein Teil des reststoffarmen Wassers kann über eine von der
Feinsiebvorrichtung 28 bis zur Zerkleinerungstrommel 12 führende
Wasserrückführvorrichtung 30 in die Zerkleinerungstrommel 12
rückgeführt werden. Sowohl die Grobsieb- wie auch die Feinsiebvorrichtung
26, 28 kann als Spannwellensiebmaschine ausgebildet
sein.The device 10 also has one of the
Bei Betätigung der Vorrichtung 10 wird in einem ersten Verfahrensschritt
der aufzubereitende Abfall in die Zerkleinerungstrommel
12 eingebracht. Es erfolgt dabei die Trennung von anorganischen
und organischen Bestandteilen des Abfalls. Dabei
schwimmen die organischen Bestandteile im oberen Bereich der
sich in der Zerkleinerungstrommel 12 bildenden wässrigen Suspension.
Die anorganischen Teile sinken dagegen ab und werden zur
Öffnung 32 transportiert. Dies erfolgt über einen sogenannten
Schneckenaustrag (nicht dargestellt). Die organischen
Bestandteile werden bis zu einer vorbestimmten Teilchengröße
zerkleinert und dann auf das Grobsieb 26 überführt, wie vorstehend
bereits beschrieben. Nach einer weiteren, feineren Siebung
wird die entstehende organische Suspension der weiteren biologischen
Behandlung z.B. in Gärtürmen zugeführt.When the device 10 is actuated in a first method step
the waste to be processed in the
Claims (11)
- An apparatus for treating waste containing organic materials, comprising at least one rotatable comminuting drum with medium solids discharge means, which comminuting drum (12) includes at least one freely movable grinding body in its interior, which one or plural grinding body or bodies is/are retained within said comminuting drum (12) by means of a separating device (16), said comminuting drum (12) including a retaining ring (18) which will retain non-comminuted waste within said comminuting drum (12) until it has been reduced to a corresponding predetermined particle size, said retaining ring (18) including two opposing openings (32, 34) in the area of a rotary axis
characterized in that
said first opening (34) serves to introduce the waste to be treated and to discharge the comminuted organic materials contained in said waste, and said second opening (32) opposite thereof serves to discharge the separated inorganic materials contained in said waste, wherein said first opening (34) is larger in diameter than said second opening (32), and wherein the comminuted inorganic materials that have sunk to the bottom will be conveyed to said second opening (32) by means of a screw-type extractor. - The apparatus of claim 1 characterized in that said grinding body consists of stone or a metal ball.
- The apparatus of one of the preceding claims characterized in that said apparatus (10) includes a coarse screening device (26) for collecting and screening the comminuted organic waste, which device (26) is connected after said comminuting drum (12).
- The apparatus of claim 3 characterized in that said the mesh size of said coarse screening device (26) is 8 mm to 30 mm.
- The apparatus of one of the preceding claims characterized in that said apparatus (10) includes a fine screening device (28) connected before or after said coarse screening device (26).
- The apparatus of claim 5 characterized in that the screen mesh size of said fine screening device (28) is 0.5 mm to 3 mm.
- The apparatus of one of claims 3 to 6 characterized in that said coarse screening device and/or said fine screening device (26, 28) is a shaft-axle screening machine.
- A method for treating waste containing organic materials using an apparatus of claim 1
characterized in that
said method includes the following steps:a) introducing waste to be processed into a comminuting drum (12) via a first opening (34) thereof and separating the inorganic from the organic materials contained in said waste, which inorganic materials portion is discharged via a second opening (32) of said comminuting drum, opposite said first opening (34);b) comminuting the organic materials contained in said waste to a predetermined particle size;c) discharging the resulting aqueous organic suspension from said comminuting drum (12) via its first opening (34) arid conveying it to a coarse screen (26);d) coarse screening of the organic suspension and separating organic materials which cannot be comminuted;e) discharging the resulting organic suspension from the coarse screen (26) to a fine screen (28);f) fine screening of the organic suspension and returning part of the low-solids water to the comminuting drum (12); andg) discharging the resulting organic suspension for further biological treatment. - The method of claim 8
characterized in that
the fine screening of the organic suspension occurs before the coarse screening step. - The method of claims 8 or 9
characterized in that
a multi-stage coarse and/or fine screening operation is performed. - The method of one or claims 8 to 10
characterized in that
any sand contained in the separated inorganic materials portion of said waste is subjected to a sand-washing process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19719145 | 1997-05-06 | ||
| DE19719145A DE19719145C1 (en) | 1997-05-06 | 1997-05-06 | Device and method for processing waste |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0876844A2 EP0876844A2 (en) | 1998-11-11 |
| EP0876844A3 EP0876844A3 (en) | 1999-05-12 |
| EP0876844B1 true EP0876844B1 (en) | 2003-01-02 |
Family
ID=7828797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98108158A Expired - Lifetime EP0876844B1 (en) | 1997-05-06 | 1998-05-05 | Method and apparatus for treating waste |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0876844B1 (en) |
| AT (1) | ATE230304T1 (en) |
| DE (2) | DE19719145C1 (en) |
| ES (1) | ES2190555T3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19907908C2 (en) * | 1999-02-24 | 2001-05-17 | Schwabacher Abfallwirtschafts | Process for the treatment of bio-waste in pulverizers with continuous waste entry on bio-waste fermentation plants |
| WO2012123807A1 (en) * | 2011-03-14 | 2012-09-20 | Sitec Castellarano S.P.A. | Process for handling waste material |
| ITMO20110056A1 (en) * | 2011-03-14 | 2012-09-15 | Sitec Castellarano S P A | PROCEDURE FOR THE TREATMENT OF REFUSAL MATERIALS |
| CN103285976B (en) * | 2013-06-04 | 2016-05-18 | 江西稀有金属钨业控股集团有限公司 | A kind of method that grinding machine outlet removes broken steel ball device and filters broken steel ball |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL51374C (en) * | 1936-09-16 | 1900-01-01 | ||
| DE2254844A1 (en) * | 1972-11-09 | 1974-05-22 | Loesche Kg | METHOD AND EQUIPMENT FOR THE PROCESSING OF MUELL |
| IT1228926B (en) * | 1987-08-07 | 1991-07-10 | Snam Progetti | PROCEDURE AND EQUIPMENT FOR THE TREATMENT OF URBAN SOLID WASTE |
| DE3803298A1 (en) * | 1988-02-04 | 1989-08-17 | Gav Ges Fuer Anaerobe Verfahre | Apparatus for comminuting and fractionating pre-sorted, organic wet refuse |
| DE8916267U1 (en) * | 1989-02-20 | 1996-08-08 | Kloeckner Humboldt Deutz Ag | Sifter for sifting granular material and grinding system with the activation of such a sifter |
| US5322792A (en) * | 1991-04-18 | 1994-06-21 | Tucker Hughes, Inc. | Process and machines for transforming household waste |
-
1997
- 1997-05-06 DE DE19719145A patent/DE19719145C1/en not_active Expired - Fee Related
-
1998
- 1998-05-05 DE DE59806782T patent/DE59806782D1/en not_active Expired - Fee Related
- 1998-05-05 AT AT98108158T patent/ATE230304T1/en not_active IP Right Cessation
- 1998-05-05 EP EP98108158A patent/EP0876844B1/en not_active Expired - Lifetime
- 1998-05-05 ES ES98108158T patent/ES2190555T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59806782D1 (en) | 2003-02-06 |
| ATE230304T1 (en) | 2003-01-15 |
| EP0876844A3 (en) | 1999-05-12 |
| ES2190555T3 (en) | 2003-08-01 |
| EP0876844A2 (en) | 1998-11-11 |
| DE19719145C1 (en) | 1998-12-17 |
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