DE397527C - Filter in which the granular filter material is washed out by water flowing from the bottom up - Google Patents
Filter in which the granular filter material is washed out by water flowing from the bottom upInfo
- Publication number
- DE397527C DE397527C DEB103778D DEB0103778D DE397527C DE 397527 C DE397527 C DE 397527C DE B103778 D DEB103778 D DE B103778D DE B0103778 D DEB0103778 D DE B0103778D DE 397527 C DE397527 C DE 397527C
- Authority
- DE
- Germany
- Prior art keywords
- filter
- washed out
- filter material
- water flowing
- granular
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Description
Filter, bei dem das körnige Filtermaterial durch von unten nach oben strömender Wasser ausgewaschen wird.Filter in which the granular filter material through from bottom to top flowing water is washed out.
Die Erfindung bezieht sich auf Filter zum Reinigen von Wasser mittels körnigen Filtermaterials, das von Zeit zu Zeit durch von unten nach oben strömendes Wasser ausgewaschen wird. Bei dieser Reinigung des Filtermaterials wird entweder ein so starker Wasserstrom angewandt, daß das Filtermaterial angehoben und hierdurch eine Lösung des Schlammes von dem Filtermaterial herbeigeführt wird, oder es werden neben dem Wasdiwasser Hilfsmlittel für die Loslösung des Schlammes, wie z. B. Luft oder Rührwerke, benutzt. Hierbei kann nun der Auftrieb des Waschmittels derart stark werden, daß die Filtermasse nicht restlos wieder zurückfällt, sondern, zumal in der Höhe der Überlaukanten, die Neigung hat, sich dem den Schlamm mitführenden ablaufenden Waschwasser anzuschließen, Diese Erscheinung und damit den Verlust an Filtermaterial zu beseitigen, bildet den Zweck der vor, liegenden Erfindung. The invention relates to filters for purifying water by means of granular filter material that flows through from bottom to top from time to time Water is washed out. With this cleaning of the filter material either so strong a flow of water is applied that the filter material is lifted and thereby a solution of the sludge is brought about by the filter material, or there will be next to the Wasdi water aid for loosening the sludge, such as B. air or agitators are used. Here, the buoyancy of the detergent can now become so strong that the filter mass does not fall back completely, but, especially at the height of the lukewarm, which has a tendency to become entrained in the mud To connect draining washing water, this phenomenon and thus the loss Eliminating filter material forms the purpose of the present invention.
Der Erfindung gemäß erfolgt beim Aus waschen in dem ablaufenden Schlammwasser eine Scheidung der mitgerissenen Filterkörner von dem abzuführenden Schlamm durch eine schräge Fläche, die durch Ausbuchtung der Filterbehälterwand gebildet wird. The invention is carried out according to washing off in the draining muddy water a separation of the entrained filter grains from the sludge to be removed an inclined surface which is formed by the bulge of the filter container wall.
Erfolgt der Überlauf nach zwei Seiten, so ist die schräge Überlauffläche natürlich an jeder Seite des Filters vorzusehen. Sie kann bei Blechfiltern durch Anbiegung der Blechwaildung, bei gemauerten Filtern durch Abschrägung des Mauerwerkes erzielt werden In der Zeichnung ist ein derartiges Filter, und zwar ein solches mit Starkstroinauswaschung, bei dem also das Filtermaterial durch eine plötzlich hochsteigende Wassermasse angehoben wird, durch die Abb. I und 2 schematisch in senkrechtem Schnitt veranschaulicht. Abb. 1 zeigt den Zustand während der Filterperiode und Abb. 2 den Zustand während der Waschperiode. If the overflow occurs on two sides, it is the inclined overflow area of course to be provided on each side of the filter. It can pass through sheet metal filters Pre-bending of the sheet metal roll, with masonry filters by chamfering the masonry In the drawing there is such a filter, and indeed such a one with heavy currents, in which the filter material suddenly falls through rising water mass is raised, by fig. I and 2 schematically in perpendicular section illustrated. Fig. 1 shows the state during the filter period and Fig. 2 shows the state during the washing period.
Bekanntlich wird zur Vorbereitung der Starkstromauswaschung, wie es Abb. I zeigt, das Wasser, das zwecks Reinigung durch das Filterbett a von oben nach unten hindurch geströmt ist und bei c das Filter verläßt, zum Teil in einem Raum h unterhalb des Filterfettes gesammelt. Dieser Raum steht durch einen Schacht leitend mit dem unter dem Siebboden des Filterbettes befindlichen Raum f in Verbindung, Wird zum Zweck der Auswaschung der Abfluß c gesperrt und durch die Leitung h Druckluft zugeführt, so wird (s. Abb. 2), das im Raum h befindliche Wasser plötzlich in seiner gesamten Menge durch den Schacht d in den Raum f befördert, so daß es die Filtermasse a auf ihrer gesamten Grundfläche gleichmäßig erfaßt und in kräftigem Stoß geschlossen in die Höhe hebt. Die Filtermasse (Abb. 2) befindet sich nun kurze Zeit in der Schwebe und fällt dann auseinander, indem ihre einzelnen Teilchen wicder senkrecht herabsinken. Inzwischen setzt aber auch dlie selitliche Strömung des nachdrückenden Waschwassers ein, die den gelockerten Schlamm abführt, wobei bisher ein gewisser Teil des Filtermaterials, das senkrecht herabfallen will, seitlich abgelenkt und ü,ber die Überlaufkante hinweg fortgeführt wurde, also verlorenging. As is well known, in preparation for the heavy current washout, such as Fig. I shows the water that is passed through the filter bed a from above for purification has flowed down through and at c leaves the filter, partly in one Collected space h below the filter fat. This room stands by a shaft conductively with the space f located under the sieve bottom of the filter bed in connection, If for the purpose of washing out the drain c is blocked and compressed air through the line h supplied, then (see Fig. 2), the water in space h is suddenly in his total amount conveyed through the shaft d in the space f, so that it is the filter mass a uniformly recorded over its entire base and closed in a powerful push lifts up. The filter mass (Fig. 2) is now in suspension for a short time and then falls apart, in that its individual particles again sink vertically. In the meantime, however, there is also a separate flow of the washing water that presses down on it one that removes the loosened sludge, whereby so far a certain part of the filter material, that wants to fall vertically, deflected to the side and over the overflow edge was continued, so was lost.
In den Überlaufweg ist nun die durch eine Ausbuchtung des Filterbehälters gebildete schräge Fläche m eingeschoben, die denjenigen Teilchen der Filtermasse, die in den Zug der seitlichen Strömung gelangt sind, Gelegenheit zum Absetzen bietet, bevor sie an die Uberlaufkante n gelangen. Diese schräge Fläche ist seitlich so weit susgedehnt und derartig geneigt, daß die seitlich abgelenkten Filterkörner entweder die Fläche bei ihrer seitlichen Bewegung ohne weiteres berühren oder aller Zeit haben, unter Einwirkung der Schwerkraft und unter Überwindung des Seiitentriebes rechtzeitig auf die schräge Fläche zurückzufallen, die ihrerseits steil genug ist, um ein Zurückgleiten der abgesetzten Filterkörner gegen die seitliche Strömung zu hindern. Auf diese Weise werden somit die mitgerissenen Filterkörner von dem abzuführenden Schwamm geschieden. In the overflow path is now through a bulge of the filter container formed inclined surface m inserted, which those particles of the filter mass, who got into the train of the lateral current, offers an opportunity to settle down, before they reach the overflow edge n. This inclined surface is like this on the side widely stretched and so inclined that the laterally deflected filter grains either touch the surface without further ado as it moves sideways, or all of them Have time, under the influence of gravity and overcoming the lateral instinct to fall back on the sloping surface in time, which in turn is steep enough in order to prevent the deposited filter grains from sliding back against the lateral flow prevent. In this way, the filter grains that are carried away are removed from the one to be discharged Sponge divorced.
Dlie Erscheinung, daß das körnige Filtermaterial beim Auswaschen z. T. abgelenkt wlird und verlorengeht, ist zwar bei der sogenannten Starkstromauswaschung am auftälligsten, zeigt sich aber auch bei andern Arten der Auswaschung, sofern nur das Waschwasser in der Richtung von unten nach oben strömt und dann seitlich abgeht. The appearance of the granular filter material being washed out z. Sometimes it is distracted and lost, is indeed with the so-called heavy current washout most conspicuous, but is also shown in other types of leaching, insofar as it is only the washing water flows in the bottom-up direction and then sideways going off.
Die Erfindung ist also mit Vorteil in allen den Fällen anwendbar, in denen diese Voraussetzung zutrifft.The invention can therefore be used with advantage in all cases in which this requirement applies.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB103778D DE397527C (en) | 1922-03-01 | 1922-03-01 | Filter in which the granular filter material is washed out by water flowing from the bottom up |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB103778D DE397527C (en) | 1922-03-01 | 1922-03-01 | Filter in which the granular filter material is washed out by water flowing from the bottom up |
Publications (1)
Publication Number | Publication Date |
---|---|
DE397527C true DE397527C (en) | 1924-06-25 |
Family
ID=6990843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB103778D Expired DE397527C (en) | 1922-03-01 | 1922-03-01 | Filter in which the granular filter material is washed out by water flowing from the bottom up |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE397527C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1063119B (en) * | 1953-07-24 | 1959-08-13 | Kretzschmar Wabag | Filter system, in particular quick filter system, with a filter base |
DE1118756B (en) * | 1952-03-05 | 1961-12-07 | Iawabagia Wasserreinigungsbau | Backwashable filter with a cylindrical filter container |
FR2555462A1 (en) * | 1983-11-30 | 1985-05-31 | Gozal David | METHOD FOR CONCENTRATING A SUSPENSION OF MICROSCOPIC PARTICLES, DEVICE FOR CARRYING OUT SAID METHOD AND APPLICATIONS THEREOF |
DE3613176A1 (en) * | 1985-04-19 | 1986-10-23 | Degremont, Rueil-Malmaison, Seine-Et-Oise | DEVICE FOR RECOVERING WATER IN A FILTER BED OF GRANULAR MATERIAL |
TR23213A (en) * | 1985-02-19 | 1989-06-21 | Mornex Ltd | PROCEDURE FOR CONCENTRATING A MICROSCOPIC GRANE SUESPENSION, EXPERIENCE OF THIS, AND THE APPLICATION TYPES OF IT. |
-
1922
- 1922-03-01 DE DEB103778D patent/DE397527C/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1118756B (en) * | 1952-03-05 | 1961-12-07 | Iawabagia Wasserreinigungsbau | Backwashable filter with a cylindrical filter container |
DE1063119B (en) * | 1953-07-24 | 1959-08-13 | Kretzschmar Wabag | Filter system, in particular quick filter system, with a filter base |
FR2555462A1 (en) * | 1983-11-30 | 1985-05-31 | Gozal David | METHOD FOR CONCENTRATING A SUSPENSION OF MICROSCOPIC PARTICLES, DEVICE FOR CARRYING OUT SAID METHOD AND APPLICATIONS THEREOF |
EP0152711A2 (en) * | 1983-11-30 | 1985-08-28 | Mornex Limited | Process for concentrating a suspension of micro-particles, apparatus for carrying out the process and applications of the process |
EP0152711A3 (en) * | 1983-11-30 | 1988-07-27 | Mornex Limited | Process for concentrating a suspension of micro-particles, apparatus for carrying out the process and applications of the process |
TR23213A (en) * | 1985-02-19 | 1989-06-21 | Mornex Ltd | PROCEDURE FOR CONCENTRATING A MICROSCOPIC GRANE SUESPENSION, EXPERIENCE OF THIS, AND THE APPLICATION TYPES OF IT. |
DE3613176A1 (en) * | 1985-04-19 | 1986-10-23 | Degremont, Rueil-Malmaison, Seine-Et-Oise | DEVICE FOR RECOVERING WATER IN A FILTER BED OF GRANULAR MATERIAL |
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