WO1991001789A1 - Procede pour filtrer des liquides contenant des solides - Google Patents

Procede pour filtrer des liquides contenant des solides Download PDF

Info

Publication number
WO1991001789A1
WO1991001789A1 PCT/EP1990/001214 EP9001214W WO9101789A1 WO 1991001789 A1 WO1991001789 A1 WO 1991001789A1 EP 9001214 W EP9001214 W EP 9001214W WO 9101789 A1 WO9101789 A1 WO 9101789A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
filter
filter surface
filtered
flow
Prior art date
Application number
PCT/EP1990/001214
Other languages
German (de)
English (en)
Inventor
Uwe Fuchs
Original Assignee
Uwe Fuchs
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 Uwe Fuchs filed Critical Uwe Fuchs
Publication of WO1991001789A1 publication Critical patent/WO1991001789A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/601—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by clearness or turbidity measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B01D29/904—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding directing the mixture to be filtered on the filtering element in a manner to clean the filter continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
    • B01D29/945—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes for continuously discharging concentrated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/043—Filter tubes connected to plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/087—Regeneration of the filter using gas bubbles, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis

Definitions

  • the invention relates to a method for the filtration of liquids containing solids by means of at least one
  • Surface filters usually consist of a basin that is divided into at least one clear water chamber and at least one dirty water chamber by means of at least one filter surface.
  • the liquid to be filtered is introduced into the dirty water chamber, flows through the filter surface and is collected as cleaned liquid in the clear water chamber.
  • the filter surface conventionally consists of a filter frame that is covered with a filter cloth. By loading the filter cloth with solids, the filter resistance increases, so-called filter cake formation occurs, so that less and less liquid can finally flow through the filter surface. Therefore, the filter must be cleaned from time to time to ensure that the filter cloth to remove adhering solids.
  • a turbulent flow is preferably generated in the liquid to be filtered, as a result of which the clearing effect of the filter surface can be further increased.
  • the movement of the filter surface or the flow of the liquid to be filtered is advantageously generated by a gas-liquid mixture flowing past the filter surface.
  • a gas is blown into the liquid to be filtered from the bottom of the filter chamber directly in front of the filter surface on the dirty water side. If additional aerobic biodegradation reactions are to take place in the filter chamber, an oxygen-containing gas is preferably blown in. If, on the other hand, anaerobic or anoxic conditions are desired, nitrogen is preferably blown in.
  • Vibration device or a frequency generator to vibrate.
  • the liquid to be filtered is set into turbulent flow by means of a vibration device or a frequency transmitter, such as an ultrasound generator.
  • a vibration device or a frequency transmitter such as an ultrasound generator.
  • the filter surface is set into vibration by generating oscillating pressure differences in the liquid.
  • the liquid column before or after the filter surface is subjected to an oscillating pressure difference.
  • the pressure difference can be generated, for example, using gas cushions that are built up by means of a compressor.
  • a preferred method consists in blowing in a gas, for example air, at a depth of 1/4 to 1/2 of the liquid column.
  • a gas for example air
  • Another variant provides for liquid peaks and valleys to be created on the liquid surface by means of flow baffles. It is also possible to provoke short-term build-ups in front of the filter surface.
  • a layer made of elastic material with adjustable, self-expanding pores is used as the filter surface.
  • a filter surface for example made of porous rubber, has a self-cleaning effect in particular when the filter surface is deformed or when a filter pressure is built up as a result of pore expansion.
  • Another embodiment of the invention provides for moving the filter surface in a plane perpendicular to the surface normal.
  • the filter surface can be moved uniformly in the filter chamber, similar to a conveyor belt.
  • the filter surface is moved on a circular path.
  • An embodiment is particularly advantageous in which the filter surface is designed as a wall of a rotating drum.
  • the liquid to be filtered is introduced into the inside of the drum, while the filtered liquid is drawn off outside the drum.
  • the drum can also be filled with carrier or cleaning bodies.
  • Mobile immersion elements can also be immersed as filter surfaces in the liquid to be filtered. These can consist, for example, of a filter frame that is covered with a filter cloth.
  • anaerobic or anoxic conditions can be maintained against the atmosphere, which, for example, allow denitrification of the liquid to be filtered.
  • aerobic conditions can be maintained in the filter chamber, so that aerobic microorganisms settle on the solids, for example causing carbon degradation.
  • a filter arrangement is created in which there is no filter cake formation and no laying of the filter pores, whereby a practically pressure-free filtration is made possible.
  • the bioreactor acting filter caramers achieves a high concentration of biomass, since practically no biomass can be lost through the drain. The method according to the invention thus achieves both an optimization of the filtration properties and of the biological cleaning properties.
  • the keep-free effect of the filter surface is increased by providing the filter surface with an electrical charge.
  • the filter surface is also provided with a negative electrical charge. This causes the solids to be repelled from the filter surface, so that no filter cake can form and the filter pores are prevented from moving.
  • the method according to the invention is suitable for the filtration of all conceivable liquids which contain solids. In particular, it is intended for use in the filtration of river, sea and industrial water.
  • the invention can also be used to advantage in the filtration of effluent treatment plants.
  • the method according to the invention can be combined with other filtration methods.
  • the blowdown can be treated with a conventional cross-flow filter to obtain a sludge concentrate.
  • a combination with a bioreactor is interesting.
  • process control such as addition of growth bodies for biomass and Schlamm Wegf ⁇ 'currency
  • the filter chamber to a reactor with particularly favorable properties both in terms of the biological cleaning performance as well as the filtration performance is.
  • the method according to the invention can also be used to split emulsions, such as for fat separation.
  • a particular advantage of the method according to the invention is the high level of economy: Since the filter surface does not have to be cleaned again and again with complex regeneration apparatus, investment costs and maintenance costs can be saved.
  • the invention enables a simple configuration of the filter arrangement, which results in a low susceptibility to interference.
  • the practically pressure-free filtration is another advantage.
  • the filter areas consist of a
  • Polyester fabric The liquid to be filtered, in the present exemplary embodiment the sequence of a. Sewage treatment plant, is connected in parallel via lines 3, 4 and 5
  • the gas-liquid mixture means that no filter cake can form and the filter pores do not become blocked.
  • the dirty water chambers A there are foam cubes in a concentration of approx. 20 vol. *.
  • the Schaumstoffw ⁇ 'dice are carried along by the flow of gas-liquid Geraisches and strip along the filter surfaces. As a result, the free space effect of the filter surfaces is reinforced.
  • the filtration takes place almost without pressure, ie the liquid level in the clear water chambers B is only approx. 10 cm below the liquid level in the dirty water chambers A.
  • 8 and 9 and pump 12 are drained. The blowdown takes place depending on the turbidity of the liquid in the dirty water chambers. The turbidity is reported by a measuring probe 13 to a control device 11 which controls the pump 12.
  • the filtered liquid is withdrawn from the clear water chambers B via line 10.

Abstract

Est décrit un procédé pour filtrer des liquides contenant des solides au moyen d'au moins une surface filtrante (2). Dans le but d'empêcher la formation d'un gâteau de filtre et le colmatage des pores du filtre, la surface filtrante (2) est mise en mouvement. En variante ou en plus, un courant présentant une composante de vélocité d'au moins 0,1 m/s tangentielle par rapport à la surface du filtre (2) est créé dans le liquide à filtrer.
PCT/EP1990/001214 1989-07-26 1990-07-25 Procede pour filtrer des liquides contenant des solides WO1991001789A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3924658A DE3924658A1 (de) 1989-07-26 1989-07-26 Verfahren zur filtration feststoffhaltiger fluessigkeiten
DEP3924658.2 1989-07-26

Publications (1)

Publication Number Publication Date
WO1991001789A1 true WO1991001789A1 (fr) 1991-02-21

Family

ID=6385834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/001214 WO1991001789A1 (fr) 1989-07-26 1990-07-25 Procede pour filtrer des liquides contenant des solides

Country Status (4)

Country Link
AU (1) AU6279590A (fr)
DD (1) DD297338A5 (fr)
DE (1) DE3924658A1 (fr)
WO (1) WO1991001789A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398706B (de) * 1992-11-06 1995-01-25 Andritz Patentverwaltung Verfahren und vorrichtung zur filtration
GB9314535D0 (en) * 1993-07-13 1993-08-25 Froud David Inlet screen
EP1180498A1 (fr) * 2000-08-08 2002-02-20 Epcon Norge AS Dispositif pour la purification d'eau contaminée par des gouttelettes d'hydrocarbures liquides
EP1381442B1 (fr) 2001-04-23 2004-10-06 NFT Nanofiltertechnik GmbH Dispositif de filtration
EP1967580B9 (fr) * 2007-03-05 2012-04-04 KRONES Aktiengesellschaft Filtre à bière
CN105387994A (zh) * 2015-12-15 2016-03-09 西南石油大学 水合物保真运移装置及其解堵方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194397A (en) * 1961-05-27 1965-07-13 H G Schauenburg Verwaltung Und Adjustable sieves
US3363771A (en) * 1966-08-03 1968-01-16 Brown Charles H Liquid filter
FR2247270A1 (fr) * 1973-10-12 1975-05-09 Hitachi Ltd
FR2365118A1 (fr) * 1976-09-17 1978-04-14 Philips Nv Dispositif pour le prelevement d'un echantillon de liquide
EP0086642A2 (fr) * 1982-02-12 1983-08-24 James Edwin Goddard Procédé de filtration et dispositif
EP0204098A2 (fr) * 1985-06-07 1986-12-10 B. Braun Holding AG Dispositif de prise d'échantillons
US4657636A (en) * 1985-01-28 1987-04-14 Hitoshi Satomi High density pulp screening apparatus
EP0235436A2 (fr) * 1986-02-28 1987-09-09 Kabushiki Kaisha Sanshin Seisakusho Procédé de filtration de suspension

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH437213A (fr) * 1964-07-01 1967-06-15 Doucet Charles Installation de filtration d'un fluide
US3933643A (en) * 1971-09-10 1976-01-20 The Carborundum Company Electrically conducting filter media for fluids
FR2950882B1 (fr) * 2010-01-14 2012-01-13 Commissariat Energie Atomique Procede de synthese du 3,5-dichloroanisole a partir du 1,3,5-trichlorobenzene

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194397A (en) * 1961-05-27 1965-07-13 H G Schauenburg Verwaltung Und Adjustable sieves
US3363771A (en) * 1966-08-03 1968-01-16 Brown Charles H Liquid filter
FR2247270A1 (fr) * 1973-10-12 1975-05-09 Hitachi Ltd
FR2365118A1 (fr) * 1976-09-17 1978-04-14 Philips Nv Dispositif pour le prelevement d'un echantillon de liquide
EP0086642A2 (fr) * 1982-02-12 1983-08-24 James Edwin Goddard Procédé de filtration et dispositif
US4657636A (en) * 1985-01-28 1987-04-14 Hitoshi Satomi High density pulp screening apparatus
EP0204098A2 (fr) * 1985-06-07 1986-12-10 B. Braun Holding AG Dispositif de prise d'échantillons
EP0235436A2 (fr) * 1986-02-28 1987-09-09 Kabushiki Kaisha Sanshin Seisakusho Procédé de filtration de suspension

Also Published As

Publication number Publication date
DE3924658A1 (de) 1991-01-31
DD297338A5 (de) 1992-01-09
AU6279590A (en) 1991-03-11

Similar Documents

Publication Publication Date Title
EP0075298B1 (fr) Procédé et dispositif pour la purification biologique d'eau résiduaire
EP0046900B1 (fr) Procédé et dispositif pour l'épuration des eaux usées par voie biologique
EP0657389B1 (fr) Procédé et dispositif pour l'épuration biologique des eaux
US3466241A (en) Biological treatment of waste water containing organic matter
DE69904702T2 (de) Vorrichtung zur fest-flüssigkeittrennung, insbesondere zur biologischen reinigung von abwasser
DE1708600A1 (de) Verfahren und Vorrichtung zur biologischen Abwasserreinigung
US3459302A (en) Apparatus and method of filtering solids from a liquid effluent
EP1568662B1 (fr) Bioreacteur à membrane et méthode de traitement des eaux résiduelles
DE2743956A1 (de) Vorrichtung zur gleichzeitigen behandlung von primaeren und sekundaeren abwasserschlaemmen
DE4128843C2 (de) Auswaschbarer filter
EP0133545B1 (fr) Procédé et dispositif pour le traitement biologique d'eau usée
WO1991001789A1 (fr) Procede pour filtrer des liquides contenant des solides
DE69133425T2 (de) Verfahren zur biologischen behandlung von flüssigkeit
DE2033669A1 (de) Verfahren und Vorrichtung zum Be handeln von Abwasser oder dergl
EP2225012B1 (fr) Installation de traitement d'eaux usées et procédé de traitement d'eaux usées
DE2045377A1 (de) Abwasserfilter
DE4415637A1 (de) Verfahren und Vorrichtung zur Klärung und Aufbereitung von Waschwassern aus Fahrzeugwaschanlagen
US6258274B1 (en) Method for reducing sludge within a river or the like
DE19501260C1 (de) Verfahren und Vorrichtung zur Behandlung von Abwässern
DE102018128600B4 (de) Filtervorrichtung und Reinigungsanlage
CH637905A5 (en) Process and equipment for effluent treatment
DE3439548A1 (de) Verfahren und vorrichtung zur biologischen behandlung von abwasser
EP1265819B1 (fr) Procede et dispositif pour l'epuration d'eaux usees
DE4240064C2 (de) Verfahren und Anlage zum Reinigen von Abwasser
DE3138246A1 (de) Verfahren und vorrichtung zur behandlung von abwasser

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BR CA CH DK FI GB HU JP KR NL NO RO SE SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LU NL SE

NENP Non-entry into the national phase in:

Ref country code: CA