DE3515958A1 - Trapping apparatus for foams - Google Patents

Trapping apparatus for foams

Info

Publication number
DE3515958A1
DE3515958A1 DE19853515958 DE3515958A DE3515958A1 DE 3515958 A1 DE3515958 A1 DE 3515958A1 DE 19853515958 DE19853515958 DE 19853515958 DE 3515958 A DE3515958 A DE 3515958A DE 3515958 A1 DE3515958 A1 DE 3515958A1
Authority
DE
Germany
Prior art keywords
safety device
foams
top surface
nozzle arrangement
air nozzle
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.)
Granted
Application number
DE19853515958
Other languages
German (de)
Other versions
DE3515958C2 (en
Inventor
Werner Winterthur Nill
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of DE3515958A1 publication Critical patent/DE3515958A1/en
Application granted granted Critical
Publication of DE3515958C2 publication Critical patent/DE3515958C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2433—Discharge mechanisms for floating particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention

Abstract

By means of the air nozzle arrangement (6), which is arranged above the surface (2) of a wastewater tank, foams (1) floating on the surface (2) are blown into a collection channel (3) over a perforated plate (5) fitted at an angle. Combustible foams (1) can, moreover, be broken down by means of flames (16) over the overflow edge (4). <IMAGE>

Description

Fangvorrichtung für SchäumeSafety device for foams

*************************** Die Erfindung betrifft eine Fangvorrichtung für Schäume.*************************** The invention relates to a safety gear for foams.

Schäume, z.B. des Bakteriums Nocardia, werden auf der Oberfläche von Flüssigkeiten wie Abwasser in Kläranlagen mittels sogenannten Räumern zusammengeschoben, abgespritzt oder chemisch zerstört.Foams, e.g. of the bacterium Nocardia, are deposited on the surface of Liquids such as wastewater in sewage treatment plants pushed together by means of so-called scrapers, hosed down or chemically destroyed.

Das Reinigen der Räumer und auch der Mittel mit denen diese gereinigt werden ist aufwendig und führt oft zu Betriebsstörungen. Das Bakterium Nocardia lässt sich zudem nicht chemisch auflösen.The cleaning of the scrapers and also the means with which they are cleaned is time-consuming and often leads to operational disruptions. The bacterium Nocardia can also not be chemically dissolved.

Die Aufgabe der Erfindung besteht nun darin, ohne mechanisch betätigte Teile den Schaum zu sammeln und diesen, sofern er brennbares Gas (Methan) enthält, aufzulösen.The object of the invention is now to be without mechanically operated Parts to collect the foam and, if it contains flammable gas (methane), dissolve.

Nach der Erfindung wird dies gemäss den kennzeichnenden Merkmalen des Patentanspruches 1 gelöst.According to the invention, this is done according to the characterizing features of claim 1 solved.

Ueberraschender Weise lässt sich der auf der Wasseroberfläche schwimmende Schaum mit geringem Energieaufwand entfernen und zerstören bzw. einsammeln.Surprisingly, the one floating on the surface of the water can be seen Remove foam with little energy and destroy or collect.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen beschrieben.Further advantageous refinements of the invention are given in the dependent Claims described.

Anhand eines illustrierten Ausführungsbeispieles wird die Erfindung näher erläutert. Es zeigen: Figur 1 eine perspektivische Darstellung einer Sammelrinne längs eines Schmutzwasserkanales mit Schaum auf der Wasseroberfläche, Figur 2 eine Schaumblase und Figur 3 ein Detail der Vorrichtung zum Fangen des Schaumes.The invention is based on an illustrated embodiment explained in more detail. The figures show: FIG. 1 a perspective illustration of a collecting channel along a dirty water channel with foam on the water surface, Figure 2 a Foam bubble and FIG. 3 shows a detail of the device for catching the foam.

Auf der Oberfläche 2 eines Schmutzwasserkanales schwimmen Schäume 1, z.B. des Bakteriums Nocardia. Entlang des Kanales oder Beckens ist eine Sammelrinne 3 mit einem glatten, polierten Ueberfall 4 angebracht. Der Ueberfall 4 besteht aus einem geneigt angeordneten Lochblech 5, dessen Neigungswinkel zur Vertikalen einstellbar ist.Foams float on the surface 2 of a waste water channel 1, e.g. of the bacterium Nocardia. There is a collecting channel along the canal or basin 3 with a smooth, polished cover 4 attached. The raid 4 consists of an inclined perforated plate 5, the angle of inclination to the vertical adjustable is.

Eine Luftdüsenanordnung 6, bestehend aus einer überstehenden Deckfläche 7 und einer darunterliegenden, zurückstehenden Unterfläche 8 sowie vertikal angebrachten Leitrippen 9 ist über der Oberfläche 3 angeordnet. Durch einen Kanal 10 wird Druckgas, z.B. Druckluft durch die Luftdüsenanordnung 6 in Richtung auf die Sammelrinne 3 eingeblasen. Die Breite b der Luftdüsenanordnung 6 entspricht im wesentlichen der Länge a der Sammelrinne 3.An air nozzle arrangement 6, consisting of a protruding top surface 7 and an underlying, recessed lower surface 8 and attached vertically Guide ribs 9 are arranged above the surface 3. Through a channel 10 is compressed gas, e.g. compressed air through the air nozzle arrangement 6 in the direction of the collecting channel 3 blown in. The width b of the air nozzle arrangement 6 corresponds essentially to that Length a of the collecting channel 3.

Der dabei erzeugte Luftstrom in Richtung der Pfeile 11 wird zwischen der Deckfläche 7 und der Unterfläche 8 hindurch über die Oberfläche 2 geleitet und bewegt die auf der Oberfläche 2 schwimmenden Schäume 1 zum Ueberfall 4. Am Lochblech 5 wird das Wasser vom Schaum 1 getrennt und der Schaum 1 zur Kante des Ueberfalls 4 gedrängt. Durch sein Eigengewicht fällt der Schaum 1 von der Kante des Ueberfalls 4 in die Sammelrinne 3. Ein Rücksprung 13 am Ueberfall 4 ermöglicht den freien Fall des Schaumes 1 in die Sammelrinne 3.The air flow generated in the direction of arrows 11 is between the top surface 7 and the lower surface 8 passed through over the surface 2 and moves the foams 1 floating on the surface 2 to attack 4. On the perforated plate 5 the water is separated from the foam 1 and the foam 1 to the edge of the raid 4 pushed. Due to its own weight, the foam 1 falls from the edge of the raid 4 into the collecting channel 3. A recess 13 on the overfall 4 enables free fall of the foam 1 into the collecting channel 3.

Der Luftstrom aus der Luftdüsenanordnung 6 wird an einer gebogenen Leitfläche 14 nach oben umgelenkt, derart dass die Schäume 1 in der Sammelrinne 3 nicht mehr aufgewirbelt werden können. Die Stärke des Luftstromes ist einstellbar.The air flow from the air nozzle assembly 6 is bent at a Guide surface 14 deflected upwards, so that the foams 1 in the collecting channel 3 can no longer be whirled up. The strength of the air flow is adjustable.

Wenn die Schäume 1 ein brennbares Gas enthalten, z.B. Methan, können diese mit einem Brennerrohr 15 mit Gasflammen 16 über der Kante des Ueberfalls 4 entzündet werden. Uebrig bleiben dann nur noch die Blasenhüllensubstanzen 18 der Schäume 1, die in die Sammelrinne 3 fallen und von dort weggeführt werden können. Der Abstand zwischen der Kante des Ueberfalls 4 und dem Brennerrohr 15 ist einstellbar.If the foams 1 contain a flammable gas, for example methane, can this with a burner tube 15 with gas flames 16 over the edge of the raid 4 be ignited. Then only the bladder envelope substances 18 of the remain Foams 1 that fall into the collecting channel 3 and can be carried away from there. The distance between the edge of the overflow 4 and the burner tube 15 is adjustable.

Die Deckfläche 7 kann bis zu einigen Metern (Länge c) über die Unterfläche hinausragen. Im Endbereich verläuft sie dann über dem Lochblech 5.The top surface 7 can be up to a few meters (length c) over the lower surface protrude. In the end area, it then runs over the perforated plate 5.

Die Höhe 19 der Kante des Ueberfalls 4 über der Oberfläche 2 und der Neigungswinkel des Lochbleches 5 sind von Fall zu Fall der Art der Schäume 1 anzupassen.The height 19 of the edge of the raid 4 above the surface 2 and the The angle of inclination of the perforated plate 5 must be adapted to the type of foams 1 on a case-by-case basis.

- Leerseite -- blank page -

Claims (10)

Fangvorrichtung für Schäume Patentansprüche: 1. Fangvorrichtung für Schäume auf der Oberfläche von Flüssigkeiten, insbesondere von Abwässern in Kläranlagen, dadurch gekennzeichnet, dass entlang eines Beckens mit Abwasser eine Sammelrinne (3) mit einem zum Becken hin geneigten Ueberfall (4) aus einem Lochblech (5) angeordnet ist, und dass über der Oberfläche (2) eine Luftdüsenanordnung (6) zum Wegblasen der auf der Oberfläche (2) schwimmenden Schäume (1) vorgesehen ist. Catching device for foams Patent claims: 1. Catching device for Foams on the surface of liquids, especially wastewater in sewage treatment plants, characterized in that a collecting channel along a basin with sewage (3) arranged with an overflow (4) made of a perforated plate (5) inclined towards the basin is, and that above the surface (2) an air nozzle arrangement (6) for blowing away the foam (1) floating on the surface (2) is provided. 2. Fangvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Neigung des Lochbleches (5) einstellbar ist.2. Safety device according to claim 1, characterized in that the Inclination of the perforated plate (5) is adjustable. 3. Fangvorrichtung nach einem der Ansprüch 1 und 2, dadurch gekennzeichnet, dass die Luftdüsenanordnung (6) aus einer Deckfläche (7) und einer gegenüber der Deckfläche (7) zurückstehenden Unterfläche (8) besteht, zwischen denen aus einem Kanal (10) Luft hindurch geblasen wird.3. Safety device according to one of claims 1 and 2, characterized in that that the air nozzle arrangement (6) consists of a top surface (7) and one opposite the Top surface (7) recessed lower surface (8), between which there is one Channel (10) air is blown through. 4. Fangvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass zwischen der Deckfläche (7) und der Unterfläche (8) vertikal angeordnete Leitrippen (9) eingesetzt sind.4. Safety device according to claim 3, characterized in that between the top surface (7) and the lower surface (8) vertically arranged guide ribs (9) are used are. 5. Fangvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichent, dass die Breite (b) der Luftdüsenanordnung (6) etwa der Länge (a) der Sammelrinne (3) entspricht.5. Safety device according to one of the preceding claims, characterized marked that the width (b) of the air nozzle arrangement (6) is approximately the length (a) corresponds to the collecting channel (3). 6. Fangvorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichent, dass die Deckfläche (7) einige Meter (Länge c) die Unterfläche (8) überragt.6. Safety device according to one of claims 3 to 5, characterized in that that the top surface (7) protrudes a few meters (length c) over the lower surface (8). 7. Fangvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass über dem Ueberfall (4) ein Brennerrohr (15) zur Erzeugung von Flammen (16) angebracht ist.7. Safety device according to one of the preceding claims, characterized characterized in that over the overflow (4) a burner tube (15) for generating Flames (16) is attached. 8. Fangvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Abstand des Brennerrohres (15) zum Ueberfall (4) einstellbar ist.8. Safety device according to claim 7, characterized in that the The distance between the burner tube (15) and the overflow (4) is adjustable. 9. Fangvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Menge der durch die Luftdüsenanordnung (6) geförderten Luft einstellbar ist.9. Safety device according to one of the preceding claims, characterized characterized in that the amount of conveyed by the air nozzle arrangement (6) Air is adjustable. 10. Fangvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der überstehende Teil der Deckfläche (7) über dem Lochblech (5) liegt.10. Safety device according to claim 3, characterized in that the protruding part of the top surface (7) lies above the perforated plate (5).
DE19853515958 1984-05-03 1985-05-03 Foam safety device with air nozzle arrangement Expired - Fee Related DE3515958C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH214884A CH662551A5 (en) 1984-05-03 1984-05-03 CATCHING DEVICE FOR FOAM.

Publications (2)

Publication Number Publication Date
DE3515958A1 true DE3515958A1 (en) 1985-11-07
DE3515958C2 DE3515958C2 (en) 1995-02-23

Family

ID=4226998

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853515958 Expired - Fee Related DE3515958C2 (en) 1984-05-03 1985-05-03 Foam safety device with air nozzle arrangement

Country Status (3)

Country Link
AT (1) AT385974B (en)
CH (1) CH662551A5 (en)
DE (1) DE3515958C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427855A1 (en) * 1989-04-06 1991-05-22 NISHIDA, Tetsuo Liquid processing apparatus, its continuous liquid processing apparatus and its continuous liquid processing method
WO1995032154A1 (en) * 1994-05-24 1995-11-30 Richard John Forsey Apparatus and method for separation of contaminants floating on the surface of a liquid
TWI424963B (en) * 2009-11-30 2014-02-01 Mitsubishi Heavy Ind Ltd Foam removal device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108128884A (en) * 2017-12-08 2018-06-08 浙江海洋大学 A kind of sewage treatment plant's biological tank defoaming device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981310A (en) * 1932-11-02 1934-11-20 Frank S Currie Skimming apparatus
GB573093A (en) * 1943-11-05 1945-11-06 Bertrams Ltd An improved method of and means for removing froth and floating dirt from a flowing liquid
DE1708522B1 (en) * 1968-03-06 1971-01-28 Wasagchemie Ag Process for sucking up oil or other flammable liquids and burning them on top of water or other non-flammable liquids
DE2917849A1 (en) * 1978-05-05 1979-11-15 Mirkoz Diesel SEPARATOR FOR SEPARATING POLLUTIONS OF LESS IMPORTANCE THAN THE LIQUID, ADVANTAGEOUS FOR CLEANING OIL-BASED WASTEWATER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981310A (en) * 1932-11-02 1934-11-20 Frank S Currie Skimming apparatus
GB573093A (en) * 1943-11-05 1945-11-06 Bertrams Ltd An improved method of and means for removing froth and floating dirt from a flowing liquid
DE1708522B1 (en) * 1968-03-06 1971-01-28 Wasagchemie Ag Process for sucking up oil or other flammable liquids and burning them on top of water or other non-flammable liquids
DE2917849A1 (en) * 1978-05-05 1979-11-15 Mirkoz Diesel SEPARATOR FOR SEPARATING POLLUTIONS OF LESS IMPORTANCE THAN THE LIQUID, ADVANTAGEOUS FOR CLEANING OIL-BASED WASTEWATER

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 56-84 684 ref. in Patent Abstr. of Japan C73, 1981, Vol. 5, Nr. 152 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427855A1 (en) * 1989-04-06 1991-05-22 NISHIDA, Tetsuo Liquid processing apparatus, its continuous liquid processing apparatus and its continuous liquid processing method
EP0427855A4 (en) * 1989-04-06 1991-10-16 Tetsuo Nisida Liquid processing apparatus, its continuous liquid processing apparatus and its continuous liquid processing method
US5246583A (en) * 1989-04-06 1993-09-21 Tetsuo Nishida Liquid treating apparatus
WO1995032154A1 (en) * 1994-05-24 1995-11-30 Richard John Forsey Apparatus and method for separation of contaminants floating on the surface of a liquid
AU692873B2 (en) * 1994-05-24 1998-06-18 Richard John Forsey Apparatus and method for separation of contaminants floating on the surface of a liquid
US5783095A (en) * 1994-05-24 1998-07-21 Forsey; Richard John Apparatus and method for separation of contaminants floating on the surface of a liquid
TWI424963B (en) * 2009-11-30 2014-02-01 Mitsubishi Heavy Ind Ltd Foam removal device

Also Published As

Publication number Publication date
AT385974B (en) 1988-06-10
CH662551A5 (en) 1987-10-15
DE3515958C2 (en) 1995-02-23
ATA130385A (en) 1987-11-15

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee