DE3443486A1 - Method and apparatus for speeding up the sedimentation of solids particles from a suspension - Google Patents

Method and apparatus for speeding up the sedimentation of solids particles from a suspension

Info

Publication number
DE3443486A1
DE3443486A1 DE19843443486 DE3443486A DE3443486A1 DE 3443486 A1 DE3443486 A1 DE 3443486A1 DE 19843443486 DE19843443486 DE 19843443486 DE 3443486 A DE3443486 A DE 3443486A DE 3443486 A1 DE3443486 A1 DE 3443486A1
Authority
DE
Germany
Prior art keywords
suspension
sedimentation
solid particles
container
speeding
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.)
Ceased
Application number
DE19843443486
Other languages
German (de)
Inventor
Andreas 4020 Mettmann Bremicker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DICO GES fur GALVANOTECHNIK M
Original Assignee
DICO GES fur GALVANOTECHNIK M
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DICO GES fur GALVANOTECHNIK M filed Critical DICO GES fur GALVANOTECHNIK M
Priority to DE19843443486 priority Critical patent/DE3443486A1/en
Publication of DE3443486A1 publication Critical patent/DE3443486A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
    • B01D21/283—Settling tanks provided with vibrators

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention relates to a method for speeding up the sedimentation of solids particles from a suspension, especially of heavy metal hydroxides from used galvanic baths. The invention is characterised by the suspension being subjected to ultrasonic treatment. The invention further comprises an apparatus with a container which has an inflow port, an outflow port, a discharge port in the bottom for the sedimented solids components of the suspension, and an ultrasonic source set in the wall, bottom or cover thereof.

Description

Verfahren und Vorrichtung zur Beschleunigung Method and device for acceleration

der Sedimentation von Feststoffteilchen aus einer Suspension Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Beschleunigung der Sedimentation von Feststoffteilchen aus einer Suspension, wie mit Schmutzteilchen beladenen Abwässern, insbesondere von Schwermetallhydroxyden aus gebrauchten galvanischen Bädern. the sedimentation of solid particles from a suspension Die The invention relates to a method and a device for accelerating sedimentation solid particles from a suspension, such as waste water loaded with dirt particles, especially heavy metal hydroxides from used electroplating baths.

Die heute üblichen Abwasserbehandlungen sehen vor, daß die Feststoffteilchen in großvolumigen Absetzbecken aus der Lösung ausgefällt werden. Zum Teil geschieht dies unter Zugabe entsprechender Chemikalien, welche die Feststoffteilchen in ausfällbare Verbindungen umwandeln, z.B. in Lösung befindliche Schwermetallteilchen werden als Metallhydroxyde oder als nicht-lösliche Stoffe ausgefällt. Dabei wird auf den Abwässern teilweise Flockungsmittel und Beschwerungsstoffe zugegeben, um die gefällten Stoffe besser filtrieren bzw. sedimentieren zu können. Ähnlich werden auch Schmutzflocken aus Lösungsmitteln aus Reinigungsautomaten gefällt, die mit Trichloräthylen, Perchloräthylen oder ähnlichen Stoffen arbeiten.The wastewater treatments customary today provide that the solid particles be precipitated from the solution in large-volume settling basins. Partly happens this with the addition of appropriate chemicals, which convert the solid particles into precipitates Convert compounds, e.g. heavy metal particles in solution are called Metal hydroxides or precipitated as insoluble substances. This is done on the wastewater partially flocculants and weighting substances added to the precipitated substances to be able to filter or sediment better. Dirt flakes also become similar from solvents from cleaning machines like those with trichlorethylene, perchlorethylene or similar materials.

Aufgabe der vorliegenden Erfindung ist nun die Schaffung eines Verfahrens und einer Vorrichtung'um die Sedimentation von Feststoffteilchen aus Suspensionen zu vereinfachen und zu beschleunigen. Dadurch soll insbesondere die Baugröße der Absetzbecken und die Verweildauer der Suspension in denselben wesentlich verkürzt werden können. Gleichzeitig soll die Umweltbelastung durch die aus der Suspension ausgefällten Feststoffteilchen vermindert werden.The object of the present invention is now to create a method and a device for sedimentation of solid particles from suspensions to simplify and speed up. This should in particular the size of the Settling basin and the dwell time of the suspension in the same are significantly reduced can be. At the same time, the environmental pollution should be caused by the suspension precipitated solid particles are reduced.

Zur Lösung dieser Aufgabe wird erfindungsgemäß ein Verfahren vorgeschlagen, welches dadurch gekennzeichnet ist, daß die Suspension einer Umtraschallbehandlung unterworfen wird. Dabei kann die Suspension, wie Abwässer beliebiger Art, bevorzugt kontinuierlich an einer Ultraschallquelle vorbeigeführt werden.To solve this problem, a method is proposed according to the invention, which is characterized in that the suspension undergoes a ultrasound treatment is subjected. The suspension, like any type of waste water, can be preferred be continuously moved past an ultrasound source.

Es hat sich gezeigt, daß die Anwendung von Ultraschall in allen Frequenzbereichen eine wesentlich schnellere Sedimentation der Feststoffteilchen aus einer Suspension zur Folge hat. Insbesondere kann verhindert werden, daß sich sehr stark mit Gasbläschen aufgeladene Teile an der Oberfläche sammeln und überhaupt nicht sedimentieren.It has been shown that the use of ultrasound in all frequency ranges a much faster sedimentation of the solid particles from a suspension has the consequence. In particular, it can be prevented from becoming very strong with gas bubbles collect charged parts on the surface and do not sediment at all.

Wesentlicher Vorteil des erfindungsgemäßen Verfahrens ist, daß die zu behandelnde Abwassersuspension nur durch einen relativ kleinen Behälter geschickt werden muß, in dem sie der Ultraschallbehandlung ausgesetzt wird. Der sedimentierende Schlamm kann bereits aus diesem Behälter abgesaugt werden. Die vorentschlammte Flüssigkeit kann dann weiter über Filterpressen gereinigt werden.A major advantage of the method according to the invention is that the The sewage suspension to be treated is only sent through a relatively small container in which it is exposed to ultrasound treatment. The sedimenting one Sludge can already be sucked out of this container. The pre-desludged liquid can then be further cleaned using filter presses.

Es hat sich gezeigt, daß die Verweilzeiten der von dem Feststoff zu reinigenden Suspension im Behälter wesentlich gesenkt werden kann. Die Reinigung des Abwassers von den in ihm enthaltenen Feststoffteilchen wird also beschleunigt. Damit wird aber auch ein wesentlicher Beitrag zur Umweltentlastung geliefert.It has been shown that the residence times of the solid to cleaning suspension in the container can be reduced significantly. The cleaning the waste water from the solid particles contained in it is thus accelerated. However, this also makes a significant contribution to relieving the burden on the environment.

Die erfindungsgemäße Vorrichtung zur Durchführung des beanspruchten Verfahrens besteht aus einem Behälter, der eine Einströmöffnung, eine Ausströmöffnung, im Boden eine Austragsöffnung für die sedimentierten Feststoffbestandteile der Suspension aufweist und in dessen Wand, Boden oder Deckel eine Ultraschallquelle eingesetzt ist.The inventive device for performing the claimed Process consists of a container that has an inflow opening, an outflow opening, a discharge opening in the bottom for the sedimented solid components of the suspension and in the wall, bottom or cover of which an ultrasound source is used is.

Anhand der Zeichnung wird die erfindungsgemäße Vorrichtung näher erläutert.The device according to the invention is explained in more detail with the aid of the drawing.

In der Figur ist ein Behälter 1 dargestellt, der eine Einströmöffnung 2 für den Eintritt der Suspension 6, insbesondere Abwasser, aufweist. Im Deckel des Behälters 1 ist eine Ultraschallquelle 5 eingesetzt. Aufgrund der Ultraschallbehandlung der Suspension 6 fallen die Feststoffteilchen beschleunigt aus und sedimentieren im Boden des Behälters 1 in der Schicht 7 und können über die Austragsöffnung 4 nach unten abgezogen werden. Die von Feststoffen befreite Lösung gelangt durch die Ausströmöffnung 3 aus dem Behälter 1.In the figure, a container 1 is shown which has an inflow opening 2 for the entry of the suspension 6, in particular waste water. In the lid of the container 1, an ultrasound source 5 is used. Because of the ultrasound treatment the solid particles precipitate out of the suspension 6 at an accelerated rate and sediment in the bottom of the container 1 in the layer 7 and can via the discharge opening 4 can be withdrawn downwards. The solids-free solution passes through the Outflow opening 3 from the container 1.

- Leerseite -- blank page -

Claims (3)

Patentansprüche 1. Verfahren zur Beschleunigung der Sedimentation von Feststoffteilchen aus einer Suspension, insbesondere von Schwermetallhydroxyden aus gebrauchten Galvanischen Bädern, dadurch gekennzeichnet, daß die Suspension einer Ultraschallbehandlung unterworfen wird. Claims 1. A method for accelerating sedimentation of solid particles from a suspension, in particular of heavy metal hydroxides from used galvanic baths, characterized in that the suspension is subjected to ultrasound treatment. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Suspension, wie Abwässer beliebiger Art, kontinuierlich an einer Ultraschallquelle vorbeigeführt wird, wobei die Ultraschallquelle kontinuierlich oder diskontinuierlich betrieben werden kann.2. The method according to claim 1, characterized in that the suspension, like sewage of any kind, continuously led past an ultrasound source is, the ultrasound source operated continuously or discontinuously can be. 3. Vorrichtung zur Beschleunigung der Sedimentation von Feststoffteilchen aus einer Suspension, insbesondere von Schwermetallhydroxyden aus gebrauchten Galvanischen Bädern, gekennzeichnet durch einen Behälter (1), der eine Einströmöffnung (2), eine Ausströmöffnung (3), im Boden eine Austragöff- nung (x) für die sedimentierten Feststoffbestandteile der Suspension und eine in dessen Wand, Boden oder Deckel eingesetzte Ultraschallquelle (5) aufweist.3. Device for accelerating the sedimentation of solid particles from a suspension, in particular of heavy metal hydroxides from used electroplating Baths, characterized by a container (1) which has an inflow opening (2), a Discharge opening (3), in the bottom a discharge opening tion (x) for the sedimented solid components of the suspension and one in its wall, bottom or the cover has inserted ultrasound source (5).
DE19843443486 1984-11-29 1984-11-29 Method and apparatus for speeding up the sedimentation of solids particles from a suspension Ceased DE3443486A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843443486 DE3443486A1 (en) 1984-11-29 1984-11-29 Method and apparatus for speeding up the sedimentation of solids particles from a suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843443486 DE3443486A1 (en) 1984-11-29 1984-11-29 Method and apparatus for speeding up the sedimentation of solids particles from a suspension

Publications (1)

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DE3443486A1 true DE3443486A1 (en) 1986-05-28

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DE19843443486 Ceased DE3443486A1 (en) 1984-11-29 1984-11-29 Method and apparatus for speeding up the sedimentation of solids particles from a suspension

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217987A1 (en) * 1992-05-30 1993-12-02 Battelle Institut E V Removal and recovery of heavy metals from earth, sludges and waterways - by amalgamation and sedimentation of esp. mercury@, nickel@ and cobalt@ and their cpds., by addn. of powered zinc@ or aluminium@
EP1627673A1 (en) * 2004-08-19 2006-02-22 Dipl.-Ing. Dr. Trampler Felix Device for separation of particles dispersed in a liquid
AT505281B1 (en) * 2007-08-24 2008-12-15 Abz Zierler Ges M B H & Co Kg DEVICE FOR SEPARATING SOLID PARTICLES FROM A DUMP
DE102013209282A1 (en) * 2013-05-21 2014-11-27 Krones Ag Sedimentation device for separating a material mixture and method for removing sediment from a sedimentation device
CN107119303A (en) * 2017-05-15 2017-09-01 西华大学 Device for removing micro-arc oxidation tank liquid sediment in real time

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688402A (en) * 1951-03-09 1954-09-07 Clevite Corp Apparatus and method for removing particles from a liquid
DE2323337B2 (en) * 1972-05-30 1979-03-22 Warren R. Orange Conn. Jewett (V.St.A.) Method for treating a multiphase system by means of sound

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688402A (en) * 1951-03-09 1954-09-07 Clevite Corp Apparatus and method for removing particles from a liquid
DE2323337B2 (en) * 1972-05-30 1979-03-22 Warren R. Orange Conn. Jewett (V.St.A.) Method for treating a multiphase system by means of sound

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217987A1 (en) * 1992-05-30 1993-12-02 Battelle Institut E V Removal and recovery of heavy metals from earth, sludges and waterways - by amalgamation and sedimentation of esp. mercury@, nickel@ and cobalt@ and their cpds., by addn. of powered zinc@ or aluminium@
EP1627673A1 (en) * 2004-08-19 2006-02-22 Dipl.-Ing. Dr. Trampler Felix Device for separation of particles dispersed in a liquid
AT505281B1 (en) * 2007-08-24 2008-12-15 Abz Zierler Ges M B H & Co Kg DEVICE FOR SEPARATING SOLID PARTICLES FROM A DUMP
DE102013209282A1 (en) * 2013-05-21 2014-11-27 Krones Ag Sedimentation device for separating a material mixture and method for removing sediment from a sedimentation device
US9643108B2 (en) 2013-05-21 2017-05-09 Krones Ag Sedimentation device for separating a material mix and method for removing sediment from a sedimentation device
CN107119303A (en) * 2017-05-15 2017-09-01 西华大学 Device for removing micro-arc oxidation tank liquid sediment in real time
CN107119303B (en) * 2017-05-15 2019-07-09 西华大学 Device for removing micro-arc oxidation tank liquid sediment in real time

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